In the USSR the development of coal flotation began in the early thirties. The first flotation plant, at the Novoenakiev factory, was put into operation in February 1936 and had an output of 15 t/h. In 1940, 0.20 million tons of coal were cleaned by flotation , In 1980, In , 0.63 million tons, in 1960.8 million tons , and by 1970 the figure should be 37.8 millioa tons. This rapid progress, which is due to the increase in the fines content in the mined coal and the growth of the coke-and-chemical ind…
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