Dust Suppression System

Dust suppressionDust suppressionsystemsystem

AMAR SOLANKI AMAR SOLANKI ENGINEER MARKETING & SERVICINGENGINEER MARKETING & SERVICING

0991009433209910094332

A Joint Venture of A Joint Venture of

Chemtrols & Chemtrols &

Samil Industries KoreaSamil Industries Korea

CHEMTROLSCHEMTROLS SAMIL ( I ) SAMIL ( I ) PVT LTDPVT LTD

chemtrols chemtrols industries industries limitedlimited

Samil Samil industries Koreaindustries Korea

32 Year old company in the business of:

Gas conditioning Gas conditioning systems.systems.

Level & Field Level & Field instruments.instruments.

Sleeved Plug Valves.Sleeved Plug Valves. Process Gas & Liquid Process Gas & Liquid

Analyzer Packages.Analyzer Packages. Group Annual Sales Group Annual Sales

turnover 300 crore. turnover 300 crore.

35 Years Old Company in the manufacture of:

Level Gauges & Level Gauges & Switches.Switches.

Boiler Drum Level Boiler Drum Level Gauges – Bi-color & Gauges – Bi-color & electrode Type. electrode Type.

Flow Elements – Flow Elements – Orifices, Flow Nozzles, Orifices, Flow Nozzles, Venturies etc.Venturies etc.

Export Performance Export Performance Award – 2005-2006Award – 2005-2006

What is dustWhat is dust

• Dust Solid particles carried by air Dust Solid particles carried by air currents. currents.

• It consists of It consists of solid particles less than 500 solid particles less than 500 µm.µm.

• Median size of 10 µm is inhalable that is Median size of 10 µm is inhalable that is trapped in the nose, throat, and upper trapped in the nose, throat, and upper respiratory tract. respiratory tract.

• Dust particles smaller than 10 µm are the Dust particles smaller than 10 µm are the most dangerous. its known as airborne most dangerous. its known as airborne dust.dust.

• A particle of 1,000 µm or larger is no A particle of 1,000 µm or larger is no longer considered fugitive dust since it longer considered fugitive dust since it fails to remain airborne. fails to remain airborne.

GenerationGeneration • By a wide range of manufacturing, By a wide range of manufacturing,

domestic, and industrial activities. domestic, and industrial activities. • Construction, agriculture, and mining are Construction, agriculture, and mining are

contribute most to atmospheric dust levels.contribute most to atmospheric dust levels.• In minerals processing operations. during In minerals processing operations. during

broking, dumping, crushing, grinding, broking, dumping, crushing, grinding, screening,screening, belt conveying, transferring, belt conveying, transferring, stocking, loading and milling materials to a stocking, loading and milling materials to a finer size and finer size and movement of workers and movement of workers and machinery.machinery.

• The amount of dust emitted by these The amount of dust emitted by these activities depends on the physical activities depends on the physical characteristics of the material and the way characteristics of the material and the way in which the material is handled. in which the material is handled.

Type Type • Fibrogenic dustFibrogenic dust is so named because it is a kind is so named because it is a kind

of dust that has fibber like tendencies. of dust that has fibber like tendencies. Fibrogenic dust is biologically toxic and if Fibrogenic dust is biologically toxic and if retained in the lungs can impair the lungs, retained in the lungs can impair the lungs, ability to function properly.ability to function properly.

• Nuisance dust, or inert dust Nuisance dust, or inert dust contains less than contains less than 1% quartz, its low content of silicates, having 1% quartz, its low content of silicates, having little adverse effect on the lungs. Any reaction little adverse effect on the lungs. Any reaction that may occur from it is potentially reversible. that may occur from it is potentially reversible. However, excessive concentrations of it in the However, excessive concentrations of it in the workplace may cause invisibility, unpleasant workplace may cause invisibility, unpleasant deposits in eyes, ears, and nasal passages and deposits in eyes, ears, and nasal passages and injury to the skin or mucous membranes by injury to the skin or mucous membranes by chemical or mechanical action.chemical or mechanical action.

typetype• Respirable dustRespirable dust are small enough to are small enough to

penetrate the nose and upper respiratory penetrate the nose and upper respiratory system and deep into the lungs, beyond system and deep into the lungs, beyond the body's natural clearance mechanisms the body's natural clearance mechanisms of cilia and mucous and are more likely to of cilia and mucous and are more likely to be retained.be retained.

• Inhalable dustInhalable dust which enters the body, which enters the body, but is trapped in the nose, throat, and but is trapped in the nose, throat, and upper respiratory tract. The median upper respiratory tract. The median aerodynamic diameter of this dust is aerodynamic diameter of this dust is about 10 µm.about 10 µm.

• Total dustTotal dust includes all airborne particles, includes all airborne particles, regardless of their size or composition. regardless of their size or composition.

Necessity of controlNecessity of control• Excessive dust emissions can cause both Excessive dust emissions can cause both

health and industrial problems.health and industrial problems.• Reducing health hazard possibilities. Reducing health hazard possibilities.

-Occupational respiratory diseases. -Occupational respiratory diseases. -Irritation to eyes, ears, nose and throat -Irritation to eyes, ears, nose and throat -Irritation to skin. -Irritation to skin.

--Pneumoconiosis known commonly as Pneumoconiosis known commonly as black lung in this respirable dust collect black lung in this respirable dust collect in lungs and darken tissue, causing in lungs and darken tissue, causing breathing difficulties and an increased breathing difficulties and an increased risk of cancer. risk of cancer.

• Reducing risk of dust explosion and fire. Reducing risk of dust explosion and fire.

Necessity of controlNecessity of control• Reducing equipment wear and damage.Reducing equipment wear and damage.• Increasing visibility. Increasing visibility. • Reducing or eliminating unpleasant odours. Reducing or eliminating unpleasant odours. • Improving relations with neighbours.Improving relations with neighbours.• Creating safer and more pleasant working Creating safer and more pleasant working

conditions, thus improving employee morale conditions, thus improving employee morale and productivity. and productivity.

• Possible product or by-product savings.Possible product or by-product savings.• To meet threshold limit values of concern To meet threshold limit values of concern

pollution control authorities. pollution control authorities.

How to controlHow to control

Dust control is the science of Dust control is the science of reducing harmful dust emissions by reducing harmful dust emissions by

applying sound engineering applying sound engineering principles. Properly designed, principles. Properly designed, maintained, and operated dust maintained, and operated dust

control systems can reduce dust control systems can reduce dust emissions.emissions.

How to controlHow to control There are four major step to exposure There are four major step to exposure

employee.employee.1-Prevention.1-Prevention. “ “Prevention is better than cure" but prevention Prevention is better than cure" but prevention

of dust in the bulk material handling operation of dust in the bulk material handling operation is an impossible task, properly designed bulk is an impossible task, properly designed bulk material handling components can play an material handling components can play an important role in reducing dust generation, important role in reducing dust generation, emission, and dispersion. emission, and dispersion.

2-2-Dilution.Dilution. Reduces the dust concentration by the use of Reduces the dust concentration by the use of

uncontaminated fresh air. uncontaminated fresh air.

How to controlHow to control

3-3-Isolation.Isolation. TThe worker is placed in an enclosed cab he worker is placed in an enclosed cab

and supplied with fresh, clean, filtered and supplied with fresh, clean, filtered air. air.

4-Control Systems. 4-Control Systems. After all prevention After all prevention the dust still the dust still

remaining in the workplace can be remaining in the workplace can be controlled by one or more of the controlled by one or more of the following techniques.following techniques.

PREVENTION and controlPREVENTION and control• Simple measures such as providing Simple measures such as providing

shrouds, covers, or enclosures around a shrouds, covers, or enclosures around a dust source help to contain dust dust source help to contain dust emissions or allow the existing dust emissions or allow the existing dust control system to operate more control system to operate more efficiently.efficiently.

• Here we describe some of the Here we describe some of the commonly commonly used processing and bulk material used processing and bulk material handling equipment, their major dust handling equipment, their major dust emission points, and measures to emission points, and measures to prevent or reduce dust generation, prevent or reduce dust generation, emission, dispersion and control. emission, dispersion and control.

DUST CONTROL SYSTEMSDUST CONTROL SYSTEMS The three basic types of dust control systems The three basic types of dust control systems

currently used in minerals processing operations.currently used in minerals processing operations.1 -1 -Dust collection systemsDust collection systems can provide reliable and efficient control however, can provide reliable and efficient control however,

the capital and operating costs are high and the capital and operating costs are high and applicable only to sources that tight enclosed. applicable only to sources that tight enclosed.

2 -2 -Wet dust suppressionWet dust suppression 3 -3 -Airborne dust captureAirborne dust capture While somewhat less efficient, are less expensive to While somewhat less efficient, are less expensive to

installinstall and operate but also require careful and operate but also require careful selection and planning to bselection and planning to be e mostmost effective. effective.

WET DUST SUPPRESSIONWET DUST SUPPRESSION

• Systems wet the entire product stream Systems wet the entire product stream so that it generates less dust. This also so that it generates less dust. This also prevents dust from becoming airborne. prevents dust from becoming airborne.

• Effective wetting of the material can be Effective wetting of the material can be achieved by achieved by Static SpreadingStatic Spreading and and Dynamic SpreadingDynamic Spreading

• Water spreading methods depending on Water spreading methods depending on the needs of the system. An optimum the needs of the system. An optimum droplet diameter for maximum material droplet diameter for maximum material surface coverage must be determined. surface coverage must be determined.

• Effective spray system performance Effective spray system performance depend upon such spray characteristics depend upon such spray characteristics as drop distribution, drop velocity, spray as drop distribution, drop velocity, spray pattern and spray pressure.pattern and spray pressure.

WET DUST SUPPRESSIONWET DUST SUPPRESSION

• Surface wetting affected by droplet size and Surface wetting affected by droplet size and impact velocity. Surface wettingimpact velocity. Surface wetting can be can be increased by reducing the droplet diameter increased by reducing the droplet diameter and increasing the number of droplets and by and increasing the number of droplets and by increasing the impact velocity (by increasing increasing the impact velocity (by increasing the system's operating pressure). the system's operating pressure).

• We use nozzles in our system that produce We use nozzles in our system that produce drops in the 200 to 500 µm range to create a drops in the 200 to 500 µm range to create a light rain effect.light rain effect.

ADVANTAGESADVANTAGESPlain Water SpraysPlain Water Sprays• It is probably the least expensive method of It is probably the least expensive method of

dust control. dust control. • The system is simple to design and operate.The system is simple to design and operate.• A limited carryover effect at subsequent A limited carryover effect at subsequent

transfer points is possible. transfer points is possible. • When good mixing of water and material can be When good mixing of water and material can be

achieved, dust generation can be reduced achieved, dust generation can be reduced effectively.effectively.

• Enclosure tightness is not essential. Enclosure tightness is not essential. Water Sprays With SurfactantsWater Sprays With Surfactants• This method is used when surfactants are This method is used when surfactants are

tolerated but excessive moisture is not tolerated but excessive moisture is not acceptable. acceptable.

• In some cases, dust control efficiency is higher In some cases, dust control efficiency is higher than with plain water sprays. than with plain water sprays.

• Equivalent efficiency is possible with less water. Equivalent efficiency is possible with less water.

AIRBORNE DUST AIRBORNE DUST CAPTURECAPTURE

• This is a cross between a dust collection This is a cross between a dust collection system and wet dust suppression systemsystem and wet dust suppression system

• It works on the principal that small particles It works on the principal that small particles of dust and small droplets of water come of dust and small droplets of water come together,together,collide, agglomerate are formed collide, agglomerate are formed larger and heavier particles that settle by larger and heavier particles that settle by gravity. gravity.

• Droplets and particles that are similar in size Droplets and particles that are similar in size have the best chance of colliding. have the best chance of colliding.

• Nozzles that produce a wet fog consisting of Nozzles that produce a wet fog consisting of drops in the 10 to 50 µm range are most drops in the 10 to 50 µm range are most effective. effective.

CONFIGURATION CONFIGURATION CONSIDERATIONSCONSIDERATIONS

Most important among components in a system Most important among components in a system are the spray nozzles.Following factors must be are the spray nozzles.Following factors must be considered.considered.

1-Droplet size,1-Droplet size, distribution is the most important distribution is the most important variable for proper dust control. The droplet size variable for proper dust control. The droplet size decreases as the operating pressure increases. decreases as the operating pressure increases.

2-Droplet velocity2-Droplet velocity, higher drop velocities are , higher drop velocities are desirable, especially in high-velocity air streams desirable, especially in high-velocity air streams and where the nozzle is not located close to the and where the nozzle is not located close to the target. Drop velocity is dependent upon drop size: target. Drop velocity is dependent upon drop size: Small drops may have a higher initial velocity, but Small drops may have a higher initial velocity, but the speed diminishes quickly. Larger drops retain the speed diminishes quickly. Larger drops retain velocity longer and can travel further. velocity longer and can travel further.


3-3-Spray Pattern,Spray Pattern, Nozzles produce different Nozzles produce different types of spray patterns with varying types of spray patterns with varying characteristics.characteristics.

Full cone nozzleFull cone nozzle product droplets that product droplets that maintain a high velocity over a distance. maintain a high velocity over a distance. They are useful for providing a high They are useful for providing a high velocity spray when the nozzle is located velocity spray when the nozzle is located distant from the area where dust control distant from the area where dust control is desired. is desired.

FULL CONE NOZZLEFULL CONE NOZZLE

FULL CONE NOAZZLEFULL CONE NOAZZLE


Hollow-cone nozzles,Hollow-cone nozzles, produce a circular produce a circular ring of water. Drops are generally smaller ring of water. Drops are generally smaller than other nozzle types and are used in than other nozzle types and are used in locations where dust is widely dispersed. locations where dust is widely dispersed. Reduced clogging is an added benefit of Reduced clogging is an added benefit of hollow-cone nozzles because its orifice is hollow-cone nozzles because its orifice is larger than other nozzle types.larger than other nozzle types.

HOLLOW CONE NOZZLEHOLLOW CONE NOZZLE

HOLLOW CONE NOZZLEHOLLOW CONE NOZZLE


Flat-spray nozzles,Flat-spray nozzles, produce produce relatively relatively large droplets that are delivered at a large droplets that are delivered at a high pressure high pressure and tapered-edge, and tapered-edge, rectangular or even spray pattern. These rectangular or even spray pattern. These nozzles nozzles useful for wet dust suppression useful for wet dust suppression systems systems and typically used in narrow or and typically used in narrow or rectangular enclosed spaces.rectangular enclosed spaces.

Flat-spray nozzlesFlat-spray nozzles

Flat-spray nozzlesFlat-spray nozzles


Hydraulic fine-spray nozzles,Hydraulic fine-spray nozzles, produce a fine produce a fine mist or fog. Hydraulic fine spray nozzles are mist or fog. Hydraulic fine spray nozzles are preferred in most areas because operating preferred in most areas because operating costs are lower since compressed air is not costs are lower since compressed air is not required. required. They are useful for airborne dust They are useful for airborne dust control systems. control systems.

Air atomizing nozzlesAir atomizing nozzles, produce finer drops, are , produce finer drops, are effective in locations where dust particles effective in locations where dust particles are extremely small and the nozzles can be are extremely small and the nozzles can be located in close proximity to the dust source.located in close proximity to the dust source.

Hydraulic fine-spray Hydraulic fine-spray nozzlesnozzles

Air atomizing nozzlesAir atomizing nozzles


4-4-Spray AngleSpray Angle Each nozzle has a jet spray Each nozzle has a jet spray angleangle, , Spray angle and spray pattern will Spray angle and spray pattern will yield a specific coverage, determining how yield a specific coverage, determining how many nozzles are needed and their relative many nozzles are needed and their relative placement. In most applications, a spray placement. In most applications, a spray angle between 55° and 70° offers the best angle between 55° and 70° offers the best coveragecoverage..

5-Flow rate5-Flow rate of water through the nozzle of water through the nozzle depends on operating pressure. In order to depends on operating pressure. In order to determine the increase in moisture on determine the increase in moisture on materials being sprayed, the flow rate of the materials being sprayed, the flow rate of the spray nozzles must be ascertained.spray nozzles must be ascertained.


Water flow rate in Air Borne Capture Water flow rate in Air Borne Capture SystemSystem

• We should know the dust emission rate We should know the dust emission rate from the dust source. from the dust source.

• We should know the density of dust, We should know the density of dust, where system is required.where system is required.

• We should know the size of emitted dust. We should know the size of emitted dust. • We consider fog density, 10 time of dust We consider fog density, 10 time of dust

density.density.


Nozzle locationNozzle location • It should be accessible for maintenance. It should be accessible for maintenance. • It Should not be in the path of flying material. It Should not be in the path of flying material. • It should be upstream of the transfer point It should be upstream of the transfer point

where dust emissions are being created. where dust emissions are being created. • It should be locate for best mixing.It should be locate for best mixing.• For airborne dust capture, it should be located For airborne dust capture, it should be located

to provide maximum time for the water to provide maximum time for the water droplets to interact with the airborne dust. droplets to interact with the airborne dust.


• Using more nozzles at lower flow rates Using more nozzles at lower flow rates can help ensure that nozzles are aimed at can help ensure that nozzles are aimed at the broken material.the broken material.

• Automation of a dust suppression system Automation of a dust suppression system can result in better performance with can result in better performance with less wasteless waste and reduced maintenance and reduced maintenance time. time.

• We use solenoid valves, load sensors, We use solenoid valves, load sensors, photo sensors, level switch, and etc to photo sensors, level switch, and etc to oprate system automaticaly.oprate system automaticaly.

MAJOR MAJOR COMPONENTCOMPONENT

• Pump skid with Pump, Motor, Filter, Pump skid with Pump, Motor, Filter, Pressure gauge, Isolation valves, Water Pressure gauge, Isolation valves, Water tank, Pressure relief valve, Level switch, tank, Pressure relief valve, Level switch, D.P.gauge, Pressure switch and etc.D.P.gauge, Pressure switch and etc.


• Control panel with MCC, Local Control panel with MCC, Local push button, Timers, MCB, Volt push button, Timers, MCB, Volt meters, Ammeters, Indicating meters, Ammeters, Indicating lamp etclamp etc


BELT CONVEYORSBELT CONVEYORS• It It is one of the major pieces of equipment used is one of the major pieces of equipment used

to transfer ore between processing equipment.to transfer ore between processing equipment.• It emit dust from It emit dust from Tail end, Skirting, Return Tail end, Skirting, Return

idlers and Head end.idlers and Head end.• Dust Prevention Measures Dust Prevention Measures 1-1-Belt Loading, The material should be loaded at Belt Loading, The material should be loaded at

same speed and same direction onto the same speed and same direction onto the centre of the beltcentre of the belt

2-Skirting, 2-Skirting, skirt boards should be sufficiently skirt boards should be sufficiently high and wide, the inclined skirting rubber high and wide, the inclined skirting rubber should be flexible and The top edges of the should be flexible and The top edges of the skirt boards are should be covered and sealed.skirt boards are should be covered and sealed.

BELT CONVEYORSBELT CONVEYORS3-Impect at loading point, 3-Impect at loading point, adequately spaced adequately spaced

impact idlers should be located at transfer impact idlers should be located at transfer points.points.

4-4-Muck shelves, to load the material centrally and Muck shelves, to load the material centrally and protect the inclined skirting rubber. protect the inclined skirting rubber.

5-5-Dust Curtains, installed at the head, tail, and Dust Curtains, installed at the head, tail, and exit ends. exit ends.

6-6-Belt Cleaners, should be installed belt scraper Belt Cleaners, should be installed belt scraper or v- plow to dislodge fine dust particles. or v- plow to dislodge fine dust particles.

7-7-Conveyor Capacity, The belt conveyor should be Conveyor Capacity, The belt conveyor should be designed to operate at 7% of its full rated designed to operate at 7% of its full rated capacity. capacity.

We place a We place a load sensor load sensor on feeder belt on feeder belt and solenoid and solenoid connected connected nozzles at nozzles at upstream of upstream of discharge and discharge and at skirting at skirting cover or as cover or as required at required at the site.the site.

Transfer chutesTransfer chutes• Transfer chutes, transport ore from one piece of Transfer chutes, transport ore from one piece of

equipment to another. equipment to another. • Should be big enough to avoid jamming of Should be big enough to avoid jamming of

material and reduce air flow.material and reduce air flow.• Should be designed so the material falls on the Should be designed so the material falls on the

sloping bottom of the chute.sloping bottom of the chute.• Wherever possible, the material should fall on a Wherever possible, the material should fall on a

local rock box or stone box.local rock box or stone box.• Curved, perforated, or grizzly chute bottoms Curved, perforated, or grizzly chute bottoms

should be used when the product stream should be used when the product stream consists of fines and lumps.consists of fines and lumps.

• Different types of chutes are used for controlling Different types of chutes are used for controlling dust during bulk material handling like spiral, bin dust during bulk material handling like spiral, bin lowering, rock ladder, and telescopic chutes. lowering, rock ladder, and telescopic chutes.

TRANSFER CHUTESTRANSFER CHUTES

Enclosures Enclosures • Enclosures are used to contain dust emissions Enclosures are used to contain dust emissions

around a dust source.around a dust source.• Should be spacious enough to permit internal Should be spacious enough to permit internal

circulation of the dust-laden air.circulation of the dust-laden air.• should be arranged in removable sections for should be arranged in removable sections for

easy maintenance. easy maintenance. • A hinged access door should be provided to aid A hinged access door should be provided to aid

routine inspection and maintenance. routine inspection and maintenance. • Dust curtains should be installed at the open Dust curtains should be installed at the open

ends of the enclosures to contain dust and ends of the enclosures to contain dust and reduce air flow. reduce air flow.

• We provide the spray nozzle in side the enclosure We provide the spray nozzle in side the enclosure or as required at site.or as required at site.

CrushersCrushers• Tow type forces applied to rock fragments, Tow type forces applied to rock fragments,

Compression and Impact Force.Compression and Impact Force.• All crushers generate dust. Impact crusher All crushers generate dust. Impact crusher

produce large amounts of fines and dust.produce large amounts of fines and dust.• Dust emits from discharges and feeds. Dust emits from discharges and feeds. • Usually, no control measures are considered in Usually, no control measures are considered in

the design of a crusher.the design of a crusher.• So So shrouds or enclosures and discharge transfer shrouds or enclosures and discharge transfer

chutes should be properly designed for chutes should be properly designed for crushers.crushers.

• Rubber curtains should be used to minimize dust Rubber curtains should be used to minimize dust escape and air flow. escape and air flow.

• The crusher should be choke fed to reduce air The crusher should be choke fed to reduce air entrainment and dust emission. entrainment and dust emission.

We place solenoid operated nozzles at We place solenoid operated nozzles at both feed end and discharge end for both feed end and discharge end for

all crusherall crusher or as required at site. or as required at site.

Screens Screens • Screens are used to sort material according Screens are used to sort material according

to size. to size. • Dust is generated in all dry screening Dust is generated in all dry screening

processes. However finer material produces processes. However finer material produces more dust.more dust.

• Screen emit dust from top and discharge. Screen emit dust from top and discharge. • Dust generated by screens cannot be Dust generated by screens cannot be

altered. However, properly enclosed and altered. However, properly enclosed and removable enclosure can reduce dust removable enclosure can reduce dust emissions that consists of a special rubber emissions that consists of a special rubber cloth, rubber moulding, and simple metal cloth, rubber moulding, and simple metal hardware. hardware.

We We recommend water spray system for recommend water spray system for screen at discharge end only. We place screen at discharge end only. We place the spray nozzle at discharge end or as the spray nozzle at discharge end or as required at site.required at site.

STORAGE BIN AND HOPPERSTORAGE BIN AND HOPPER

• These are used to store ore temporarily. • Feed by various equipment, such as

conveyors, elevators, and screens and normally discharged through gravity or vibrating feeders .

• Emit dust from feed openings, discharge feeder and Inspection doors.

• Should be install bin-lowering chute, completely enclosing, telescopic chute and loading spout to minimize dust emission.

• We provide spray nozzle at feed opening inside the storage bin and at discharge feeder or as required at site.

FEEDERSFEEDERS• Feeders are relatively short conveyors used Feeders are relatively short conveyors used

to deliver a controlled rate of ore to the to deliver a controlled rate of ore to the processing equipment. processing equipment.

• All type of feeders emit dust from receiving All type of feeders emit dust from receiving end and discharge endend and discharge end

• Feeder should be oversize or produce less Feeder should be oversize or produce less agitation and enclosed as much as possible. agitation and enclosed as much as possible.

• We place nozzle inside the enclosure We place nozzle inside the enclosure between receiving end and discharge end between receiving end and discharge end or as required at site. or as required at site.

BUCKET ELEVATORS BUCKET ELEVATORS

• A bucket elevator consists of a series of A bucket elevator consists of a series of buckets mounted on a chain or belt that buckets mounted on a chain or belt that operates over head and foot wheels. operates over head and foot wheels.

• It emit dust from both point, boot end It emit dust from both point, boot end and head end.and head end.

• The transfer chutes and The transfer chutes and enclosuresenclosures between feed equipment and elevator as between feed equipment and elevator as well as well as the elevator discharge and the the elevator discharge and the receiving equipmentreceiving equipment should be proper should be proper designed. designed.

• We provide spray nozzle at both end to We provide spray nozzle at both end to suppress dust or as required at site.suppress dust or as required at site.

STOCKPILESTOCKPILE

• Large volumes of processed material are Large volumes of processed material are stored in open or enclosed stockpiles.stored in open or enclosed stockpiles.

• It emits dust when format a new pile and It emits dust when format a new pile and from previously formed pile.from previously formed pile.

• Dust can be reduced by minimize the free Dust can be reduced by minimize the free fall of material and providing wind fall of material and providing wind protection. protection.

• We provide a spray header around the We provide a spray header around the discharge chute with hydraulic flat fine discharge chute with hydraulic flat fine spray nozzle spray nozzle or as required at siteor as required at site. .

HAUL ROADSHAUL ROADS

• They are used to transport ore from the They are used to transport ore from the quarry to the processing plant.quarry to the processing plant.

• Emission depend upon the condition of the Emission depend upon the condition of the road surface, volume and speed of vehicle road surface, volume and speed of vehicle traffic.traffic.

• Reducing traffic volume by replacing small Reducing traffic volume by replacing small haul vehicles with larger ones. haul vehicles with larger ones.

• To reduce the emission Spraying the soil To reduce the emission Spraying the soil frequently with water or oil.frequently with water or oil.

• We manufacture tanker mounted spray We manufacture tanker mounted spray system for that purpose. system for that purpose.

TRUCK & WAGON TRUCK & WAGON DUMPINGDUMPING

• Ore is unloaded from trucks or wagon in Ore is unloaded from trucks or wagon in most minerals processing facilities.most minerals processing facilities.

• Dumping large volumes of material in a Dumping large volumes of material in a short time, which displaces an equal short time, which displaces an equal volume of air carrying fine dust particles volume of air carrying fine dust particles and wind spreading the dust.and wind spreading the dust.

• Enclosures should be used to contain Enclosures should be used to contain dust during dumping. dust during dumping.

• We place a overhead spray bar assembly We place a overhead spray bar assembly at dump hopper or as required at site.at dump hopper or as required at site.

DESIGN A CONTROL DESIGN A CONTROL SYSTEMSYSTEM

The following information list is required.The following information list is required.• Process flow diagram of the facility indicating Process flow diagram of the facility indicating

items such as the type of material being items such as the type of material being handled, material flow rates, and the type of handled, material flow rates, and the type of equipment. equipment.

• Major dust emission points and conditions that Major dust emission points and conditions that occur at these points during normal operations. occur at these points during normal operations.

• Desired performance of the system.Desired performance of the system.• Drawings indicating equipment layout. Drawings indicating equipment layout. • Retention time of material in bins or stockpiles. Retention time of material in bins or stockpiles. • Availability of electrical and other utilities. Availability of electrical and other utilities. • Areas requiring freeze protection. Areas requiring freeze protection.

AMAR SOLANKI AMAR SOLANKI ENGINEER MARKETING & SERVICINGENGINEER MARKETING & SERVICING

0991009433209910094332

Dust Suppression System

Technology

upper respiratory

entire product

minerals processing

reduce air

inclined skirting

air atomizing

reduce dust

airborne dust