Ashapura perfoclay

A SEMINAR REPORT

ON Ashapura perfoclay Ltd

Submitted to: Submitted By: Anil pratap singh Sagarpotra Nikunj EE DEPARTMENT FINAL YEAR

Introduction

Established in 1960 the Ashapura group is India’s largest muti-mineral solutions provider. The multinational group has mining & mineral processing facilities in Belgium, Oman and Malaysia; in India it operates from Rajasthan,Gujarat, Maharashtra, Karnataka, Kerala, Andhra Pradesh and Orissa.

Ashapura also dominates the value added segments in the country for Bleaching Clay, Clay Catalysts and Calcined Bauxite.

Introduction of china clay One of the purest of the

clays,composed chiefly of the mineral kaolinite usually formed when granite is changed by hydrothermal metamorphism. China clay occurs in the deposits in the form of china clay rock, a mixture of up to 15 per cent china clay and up to 10 per cent mica, and the remainder being quartz.

Equipment’s

Conveyor’s• Screw conveyor• Belt conveyor

Gridding machine• Hammer grinding Crusher• Hammer crusher• Jaw crusher

Mill• Ball mill

Dryer • Solar dryer

Processing:1. Blunging:The China Clay (kaolin) is mixed with water to create milk-shake-like slurry. Slurry is simply the water and dispersed clay mixture, which puts the clay particles in suspension.

De-gritting:The slurried China Clay (kaolin) is usually transported through pipelines to degritting facilities, where sand, mica and other impurities are extracted with the help of gravity.

Solid-Liquid Separation:• We feed 35-40% solid concentration slurry in to the filter press by stroke pumps to

separate water out of slurry. Due to stickiness of the clay we go up to 8 kg/cm2 pressure. After formation of clay cake the moisture content varies from 20-25%.

Filtering and Brightness enhancement:With both the fine and coarse China Clay (kaolin) particle fractions, brightness is enhanced through one or move processes which will remove iron, titanium, organic, and other undesirable materials.

Drying:The wet cake having moisture 8 – 12% comes in contact with hot drying air in the cage mill & gets conveyed to cyclone through dryer flash ducts & the drying takes place in cage mill & flash duct. Water evaporation is around 8 % to 10%. Final product is around 1 – 1.5% moisture & size is granules cum powder. The dried material gets conveyed to cyclone separator & discharge through rotary airlock valve in the form of dried granules cum powder. This granules cum powder are then passed through pulverizer to make it powder as required. The fines are passed on to bag filter & are discharged through rotary air lock valves.

Powdering and Packing:After Sun drying we break the cakes in to small sizes max 5” or powder as per the requirement of customer.We make powder by hammer grinding mill.

Block diagram:

EARTHING•Neutral Earthing

•Electric Earthing

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