Home » COAL » Coal India Ltd. (CIL) Takes Out of Box Initiative To Produce Sand From Overburden at a Much Cheaper Price

Coal India Ltd. (CIL) Takes Out of Box Initiative To Produce Sand From Overburden at a Much Cheaper Price

*Better quality sand to be offered at almost 10 per cent of market price

*Western Coalfields Ltd (WCL) takes up the very first initiative

* Reduces adverse footprint of river bed mining of sand          

Even as the mandate is to produce and despatch coal to its consumers, Coal India Ltd. (CIL) has taken an out of box initiative to produce sand from overburdenat a much cheaper price. This will not only help in minimising environmental pollution due to sand siltation from overburden, but will be also an option for getting cheaper sand for construction purpose. Production of sand has already started and a roadmap of next five years has been drawn to maximise the output of sand from different coal producing companies under CILand to become one of the major suppliers of sand in near future.

In this effort, CILaims to reach a production level of around 8 million tonnes of sand within the next five years by commissioning 15 major Sand Plants in its different coal producing subsidiaries. By the end of current fiscal, CIL envisages to have 9 out of 15 plants with a production of around three lakh cubic meter. This effort will not only help the society at large but will also help in minimising river bed mining of sand.

During opencast mining of coal, the strata lying above coal seam is known as overburden comprising of clay alluvial sand and sandstone with rich silica content. The overburden is removed to expose and extract coal from beneath. After completion of coal extraction, the overburden is used for back filling to reclaim the land in its original shape. While extracting overburden from top, swell factor of the volume accounts for 20-25%. Initiative has been taken to utilise at least 25% of overburden in converting to sand by crushing, sievingand cleaning.

The very first initiative of such conversion has been taken by Western Coalfields Ltd.(WCL), a subsidiary of CIL in its mines. Initially a Pilot Project was launched where sand was extracted through machines erected departmentally. This sand has been offered to Nagpur Improvement Trust at a much cheaper price for constructing low cost houses under Pradhan MantriAwaasYojana (PMAY). The price of sand is almost 10% of the market price with better quality. On huge success of the project and with growing demand of cheaper sand, WCL launched commercial production by commissioning the largest sand production plant of the country near Nagpur. This unit produces 2500 cubic metre of sand per day at about half the market price. Major chunk of the sand produced from this plant is being given to Govt. units such as NHAI, MOIL, Mahagenco and other smaller units at one third of the market price. Rest of the sand is being sold through open auction in the market which is helping locals to get sand at a much cheaper price. The use of overburden has minimised the volume of land required for overburden dump. This initiative also lowers the adverse footprint of river bed mining of sand. WCL is also selling overburden for road construction at a cheaper price to NHAI & others. Two new plants in Chandrapur District of Maharashtra have been planned by WCL, which is likely to be commissioned by the year end.


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