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Show The Macqulsten Concentrator. Mining men who have sulphide ores should I visit the experimental concentrating works that V are running in the Glasgow & Western offices, in the McCornick block. They will there see the miracle performed of putting some crushed ore r in a hopper, see it started on its way through a revolving grooved tube, which resembles a big, rifled cannon, and with no agency save the water that flows through the tube and rests in the tanks at the outlet, see the sulphides in the mass, as by instinct range themselves together in one place and the gangue seek another direction. It 1 is in one respect like the day of judgment the sheep gravitating one way, the goats another. It is as when a crowd makes a rush for a theatre. All enter the same door, but without noise one company gravitates to the dress circle, the other I to the gallery. The tnypntion is by Mr. A. P. Stanley Mac-quisten Mac-quisten of "the G. & W. company. The secret seems to be the utilizing of the repellant and absorbent ab-sorbent properties of water, which in sulphido ores acts like the positive and negative qualities of electricity. Crushed sulphides are pure metal, shiny in color and, examined when separated, carry a greasy look. When these in rotation reach the surface of the water they break the tension, pierce it and float away, while the gangue is absorbed and carried on to its receptacle. recep-tacle. These tubes are four or five feet long, constantly revolving, with the result that practically prac-tically all the metal is in its course able to extri-, cate Itself from the gangue and to dismiss the last of its bad company. The advantages claimed are that a-cleaner and more perfect separation is made than by any other process, that the power required is almost al-most nothing, and- the space occupied as compared com-pared with other concentrators is as about 1 to 15. Mr. Macquisten will soon complete a small sampling plant, in which every man's ores can bo tested. |
