Classifying – separating – and assorting solids – With heat treatment
Patent
1982-06-30
1984-05-08
Miles, Tim R.
Classifying, separating, and assorting solids
With heat treatment
209 37, B07B 902
Patent
active
044473192
ABSTRACT:
In a process for separating sand from a brown coal or lignite material containing sand, wherein the sand is present entirely or predominantly in a grain size range covering only a part of the grain size range of the brown coal or lignite, with the grain size of the coarsest grains of the sand being markedly lower than the grain size of the coarsest coal grains, the coal in the grain size range between zero and at least the grain size corresponding to the maximum grain size of the sand is removed by a gaseous classifying operation, and the remaining material is subjected to a sieving or screening operation, the cut-off line of which is in the region of the grain size of the coarsest grains of the sand to be removed.
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Webster's Seventh New Collegiate Dictionary, p. 808, Cpr. 1965, Merriam Co.
Miles Tim R.
Rheinische Braunkohlenwerke AG
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