. Transactions of the Institution of Mining Engineers . as really perfect. If it be considered that owing to the large capacity of the washerythese tests are often of very short duration, this proves what adaptionand precision there is in the regulation of the process of washing byRh^olaveurs. Compare this regulation with that of the plunger-jigs inwhich whole days and sometimes months are required to obtain a more orless perfect washing, and which moreover requires, from the view of theoperator, an experience that very few can acquire. The choice of a plant, therefore, depends upon the follow
. Transactions of the Institution of Mining Engineers . as really perfect. If it be considered that owing to the large capacity of the washerythese tests are often of very short duration, this proves what adaptionand precision there is in the regulation of the process of washing byRh^olaveurs. Compare this regulation with that of the plunger-jigs inwhich whole days and sometimes months are required to obtain a more orless perfect washing, and which moreover requires, from the view of theoperator, an experience that very few can acquire. The choice of a plant, therefore, depends upon the following factors :— (1) The sum to be spent on the plant. (2) The capacity of the washery. (3) The site upon which to erect the plant. (4) The possibility of dust-extraction from dry coal. (5) The facility of loading or of storing the washed product. (6) The degree of purity required for each class of material treated. Figs. 15 to 21 show the general arrangement of a Rheolaveur washeryto treat 160 tons of 0-2-inch coal per hour, and are Fig. 15.—Plan of Rheolaveur Installation. TRANSACTIONS INSTITUTION OF MINING ENGINEERS. [Vol. LXII.
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries
