Coal fines extraction system for mine materials - has fine grinding, digestion and final air jet sieving operations to separate stone from coal

摘要

The system for extraction of fine, useable coal fines and small lumps of coal from detritus broken up during coal mining screening and washing and partic. during transportation. The shale and stone type particles are simultaneously processed so that the mined material is very finely ground when it has been converted to a dry state and is then digested. The digested material is fitteced by an air blown system in such a way that the coal fines is separated from the stone or other material.