. Transactions of the Institution of Mining Engineers . Fig. 8.—Alternative Areangbmekt of Rheolaveurs to produce a Mixed Product. When it is required to produce a class of middle products, these canbe obtained by two different ways, namely :— (1) By treating m a third trough the product evacuated by the lastapparatus of the second trough; the Rheolaveurs of this third trough. Fig. 9.—Section of Sealed Apparatus and Elevator. evacuate a product of intermediate specific gravity (being a combinationof coal and shale), known as middle product, allowing clean coal to passover the end of the trough
. Transactions of the Institution of Mining Engineers . Fig. 8.—Alternative Areangbmekt of Rheolaveurs to produce a Mixed Product. When it is required to produce a class of middle products, these canbe obtained by two different ways, namely :— (1) By treating m a third trough the product evacuated by the lastapparatus of the second trough; the Rheolaveurs of this third trough. Fig. 9.—Section of Sealed Apparatus and Elevator. evacuate a product of intermediate specific gravity (being a combinationof coal and shale), known as middle product, allowing clean coal to passover the end of the trough, where it joins Avashed coal from two uppertroughs (Fig. 7). 1921-1922.] FRANCE-FOCQUET AND MITTON NOTES ON COAL-WASHING. 229
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries
