PT Kaltim Prima Coal (KPC)

LOADING

PT. Kaltim Prima CoalMuhammad Hanif P. (D62113001)Adventius Ronald P. (D62113004)Yudhi Ryinaldi (D62113007)Risastri Ridwan (D62113008)Yuni Wulan A. (D62113014)Abdurrahman Jauhari (D62113018)Angga Al-Amin (D62113301)Rahma Kasna (D62113303)Yosita P.Parissing (D62113304)Rizky Isal (D62113306)Reifan Fahrisyah (D62113313)Sahmudin (D62113318)Aisyah Welina (D62113319)

KPC LOCATION KPC LOCATION

History

1978The Government of Indonesia invites tenders from foreign companies for the exploration and development of coal resources in east and south Kalimantan. A British Petroleum International Ltd and Conzinc Rio Tinto of Australia Ltd  joint venture was successful in bidding for an area of 7,900 sq. km in two blocks extending 300 km along the coast of eastern Kalimantan

1982PT Kaltim Prima Coal (KPC) incorporated in Indonesia with British Petroleum International Ltd and Conzinc Rio Tinto of Australia Ltd  each holding 50% of the shares. KPC licensed to conduct exploration and mining of coal based on a Coal Contract of Works (CCOW) with the concession covering 90,706 ha. The Indonesian State Coal Company (PTBA) to receive 13.5% entitlement of all production

HISTORY

1988KPC decision to proceed with the development of an export mine with a design capacity of 7 million tonnes per annum (Mtpa) following detailed exploration and a feasibility study of prospects close to Sangatta. The prospect has substantial quantity of high quality coal reserves, is close to a coast line with deep water and is strategically located to service growing markets. KPC subsequently relinquished most of the original Agreement Area, retaining 1,961 sq. Km

1989Construction commences in January. The budget for the project is US$570 M

1990Work on the large scale mine development commences in June

1991All major items were

commissioned by late 1991

1992Commercial exports begin in

January 1992

2003October 2003 – sold to PT Bumi Resources Tbk and East Kutai

Regional Government.

2007July 2007 – 30% of shares owned by PT Bumi Resources Tbk sold to Bhira Investment Ltd (formerly

known as Tata Power).

The purpose this geological investigation is to identify the contained, presence, size, shape, distribution, quantity, and quality of a coal deposit as the basis of analysis / study the possibility of investment. The investigation stage determines the level of the coal resources be produce.

EKSPLORATION

Mining preparation stage begins with exploration surveys. Exploration activities include maping field, measurements of geological structures, outcrop sampling, exploration drilling, geophysical logging, and valuation reserves.In KPC there are 3,579 million tonnes of coal resources and634 million tonnes of coal reserves

Top soil on construction works (buildings, roads, etc.) is a material that must be removed because it can result in less stable against the results of a soil removal work. Another case if the purpose of the use is for agriculture / plantation, the top soil is a very useful element that must be handled with care and caution so that the damage and loss of topsoil can be minimized. Similarly, in the works of mining, coal mining carried out by setting aside or keep top soil in a place, which will be after the completion of mining can be used to get the results back for reclamation (back felling) so that the condition of the ground surface can be carried out replanting (reboasasi). Activities to strip the top soil is called stripping.

TOPSOIL STRIPPING AND SPREADING

Drill Drilling activities conducted on the coal companies to obtain more detailed data and can be accurately estimated reserves, other than that the data can also be used to obtain coal quality, engineering geological data, to drilling and hydrogeology can be seen groundwater levels and type. In Kaltim Prima Coal used core drilling (core drilling). But before doing the drilling we first determine the point of the drill to do a GPS capitalize stake out point. Then do the manufacture of drill pad (broad and conditions are tailored to the needs) used dozer (usually for non-portable rig) while for the manufacture of portable drill rig pad. product that comes out is the core of the rock as shown below:

DRILL AND BLAST

BlastingIn mining company Kaltim Prima Coal, usual used methods of delay blasting. Electric detonator is a type of detonator that its ignition with electrical current delivered via a special cable to it on both ends of the tube into the kabe electric detonators fitted with fine wire types are bare electric current which, if passed would glow. In principle, the composition and content of this type, the same as the detonator detonator usual, incandescent of fine wire will burn the herb burner and then touch the main field resulting in jerky waves that will blow up a basic stuffing, so it appears here that the same principle of electric detonators with usual detonator difference only on penyalaannya. "Delay Blasting": blasting is performed sequentially few seconds.

OB (Over Burden) Overburden is the integumentary layer minerals which usually consists of: - Top Soil - Sub-Soil - Core soil layer (sand Stone, Clay, and others - others)

Overburden removal is activity to move material from demolition excavator (backhoe or shovel type excavators) from the loading point to the accumulation / disposal called the planned disposal.

The disposal there are 2 types of backfill and waste dump / outpit dump.Backfill is stacking / disposal of overburden removal activity results that are within the area tambang.Waste dump / dump outpit is stacking / disposal proceeds overburden removal activity that is outside the area mine.

OB REMOVAL

The dispatch system is the industry’s most trusted fleet management solution. Available for both surface and underground mines, the dispatch system lets you implement specific production strategies using an extensive set of mining tools. Dispatcher is one that sends out trains, buses, trucks, or cars according to a schedule.KPC operates six to 12 individual open pits at any time, the average stripping ratio being 7.5bcm (bank cubic metres) of overburden per tonne of coal. The overburden material degrades quickly on exposure to the atmosphere and generally provides easy digging.Some overburden rock requires blasting to ensure adequate fragmentation for the shovels. KPC carries out its own mining in most of the pits, but also contracts out a smaller proportion of its mining requirements.

DISPATCH

The management of a geotechnical project requires a wide range of important information coming from the sensors, which are of vital importance for correct execution of construction plans and to refine soil models.

Geotechnical applications mainly concern constructions where engineering properties of rock and soil must be considered. The capacity of the ground to support constructions is studied by engineers with geotechnical instrumentation.

GEOTECH MONITORING

COAL MINING AND STOCKPILES

Coal MiningKPC’s mining operation is conducted by KPC through our Mining Operation Division (MOD) and a number of contractors. KPC does not collaborate with artisanal and small-scale mining (ASM). This year, we managed to open one new pit called Tamara pit with an estimated production capacity of 600 thousand tons of mined coal.

Coal1. Prima (antrasit)Prima coal is one of the highest quality internationally traded thermal coals. It is a high volatile bituminous coal with high calorific value, very low ash, moderate sulphur, and relatively low total moisture. It is a bright and lustrous coal with high vitrinite content. Prima comes primarily from six main seams in pits that are located close to the Pinang Dome. Higher temperatures and pressure in coal seams near the Dome resulted in coal with lower moisture and consequently higher heat content. With sparkling black color (luster) metallic, containing between 86% - 98% elemental carbon (C) with a water content of less than 8%.

2. Pinang (bituminous)Pinang coal is similar to Prima coal but with higher moisture and lower energy. contains 68-86% elemental carbon (C) and the water level of 8-10% by weight.

3. Melawai (sub- bituminous)Melawan coal is an ultra clean sub-bituminous coal with ultra low ash and sulphur contents. Pinang and Melawan coal are located further away from the Dome and contained in seams generally higher in the stratigraphic sequence. contains less carbon and more water, and therefore a source of heat is less efficient compared to bituminous.

StockpileServes as a buffer between stockpile and delivery process, as a strategic inventory of the short-term disruption or long term. Stockpile also serves as a process of homogenization or mixing coal and to prepare the required quality. Understanding Stockpile is a storage area / buildup of coal mining. Stockpile is also used to mix coal homogenization that aims to prepare a product of one type of material in which fluctuations in coal quality and comparable size distribution.

Coal is received from off-road trucks with a capacity of 100 to 220-tonnes at the truck dump hopper. The hopper is located at the western end of the stockpile and consists of a single 300-tonnes hopper, with main dump face. The truck dump area will have a secondary side dump face at a future date. The hopper discharges through a feeder breaker to the sizer station feed conveyor. The feeder breaker reduces the received coal from 500 mm to 200 mm x 0 mm at an average capacity of 2,000 MTPH (2,500 MTPH peak).

At the sizer station the coal is further reduced to 50 mm x 0 mm, and then it is conveyed and discharged to the stockage pile with a traveling tripper. The storage pile has a total capacity of 200,000 tons

INFRASTUCTURE (CRUSHING)

Coal crushing stages1.Vibrating

feeder2.Jaw crusher3.Impact crusher4.Cone crusher

A simple stockpile is formed by machinery dumping coal into a pile, either from dump trucks, pushed into heaps with bulldozers or from conveyor booms. More controlled stockpiles are formed using stackers to form piles along the length of a conveyor, and reclaimers to retrieve the coal when required for product loading, etc.

INFRASTUCTURE (CRUSHED STOCKPILES)

Trucks Units Capacity

Liebherr T282 31 360 tonnes

Hitachi EH 4500/5000 111 280 tonnes

Caterpillar 789 96 188 tonnes

Caterpillar 785 55 135 tonnes

Komatsu HD785 64 90 tonnes

Caterpillar 777 38 90 tonnes

Diggers Units Capacity

Liebherr R9800 3 45 m3

Liebherr 996 18 32 to 34 m3

Hitachi EX3600 11 23 to 24 m3

Hitachi EX 3500 6 22 m3

Hitachi EX 2500 4 15 – 16 m3

Liebherr 984C 4 5 – 8 m3

KPC MOBILE FLEET

MAINTENANCE

MAINTENANCE

The mine site contains separate stockpiles for the Prima and Pinang products, holding 60,000t and 35,000t respectively. Coal is reclaimed and transported by a 13km-long, 2,100t/h-capacity overland conveyor to Kaltim Prima’s dedicated port facilities at Tanjung Bara.Further stockpiles hold a live capacity of 350,000t of Prima and 150,000t of Pinang coals. Coal is transferred directly from mine to ship whenever possible.Vessels of up to 220,000dwt can be handled by the port, with loading facilities at the end of a 2km-long jetty. Twin quadrant loaders can each handle up to 4,700t/h, the normal loading throughput.

INFRASTUCTURE (PRODUCT CONVEYING)

With selective mining, over 90% of the run of mine coal only needs crushing and blending to give export quality Kaltim Prima Coal. Coal from the seam roofs and floors contains more mineral material, and so has to be washed. This 'dirty Prima' and Pinang material is handled separately from the 'clean Prima', with individual streams for the different raw materials.After crushing to 50mm in Gundlach rolls crushers, the washing plant uses dense medium cyclones for 0.5mm to 50mm feed, and spirals for the 0.5mm material, products being dewatered in centrifuges before blending into the Prima Coal stockpile.

COAL PROCESSING

Transportation is the activity undertaken to transport or carry materials or precipitate minerals from the mining front was taken to mills for further processing.

Transportation activities using the Dump Truck that I was then taken to the stockyard, where processing occurs at the site to do the crushing (crushing).

BARGING AND TRANSHIPMENT

After passing the last crushing process, coal was brought to the stockyard 2 or coal storage locations in accordance with a predetermined size.

Coal is already experiencing reduced and ready for sale will be transported using a dump truck to the location of the coal pile at the port. And by using a conveyor belt coal carrying to coal barging and then brought to the vessel coal loading.

7500tph Twin Quadrant Ship

Loaders  

Facility can handle up to

220kt Cape size vessels

KPC SHIP LOADER

GLOBAL SALES

Reclamation associated with mining activities is recovery the land and vegetation in forest areas damage the risk of mining activities to be able optimally functional.

RECLAMATION

A few example of PT.KPC’s reclamation : Þ Forest called ArboretumÞ Lake of Batu ArangÞ Tourist area by building facilities that support tourism

activities such as, lodge, boat tours, children's play facilities, and areas paintball.

Þ Training center for integrated dairy farms in former mining areas are equipped

Þ building training facilities, stables and cattle farm area, the use of cow manure for biogas and composting home.

Þ plantations of oil palm

FAUNA

Macaranga tanarius Melastoma malabathricum

Dracontomelon duperreanumAlstonia scholaris

Rhizophora mucronata

Þ Approximately 153 species of flora and nurseries have been developed by KPC.

Þ PT. KPC has cultivated more than 7,500 mangrove seedlings to extend the Bekantan monkey habitat and emerald dove.

FLORA

Homalanthus populneus Croton argyratus Archidendron havilandii

Process of PT. Kaltim Prima Coal reclamation.