The flotation process . will rise immediately to the discharge. However, we believethat the Janney and Hoover machines are the most useful of themechanically-agitated type. Pneumatic Flotation. Among the different pneumatic machines,as far as we are acquainted, the Callow test-machine is the only oneof laboratory size that has been much developed. It is merely thecommercial Callow machine reduced in size (see Fig. 70, 71, and 72).Later development in the laboratory of the General Engineering Co.,in Salt Lake City, has resulted in the reproduction of the wholeplant in miniature (as shown in Fig
The flotation process . will rise immediately to the discharge. However, we believethat the Janney and Hoover machines are the most useful of themechanically-agitated type. Pneumatic Flotation. Among the different pneumatic machines,as far as we are acquainted, the Callow test-machine is the only oneof laboratory size that has been much developed. It is merely thecommercial Callow machine reduced in size (see Fig. 70, 71, and 72).Later development in the laboratory of the General Engineering Co.,in Salt Lake City, has resulted in the reproduction of the wholeplant in miniature (as shown in Fig. 72), with a Pachuca mixer, aroughing-cell. cleaning-cell, vacuum-filter, and sand-pump to returnmiddling to the Pachuca mixer. As seen in the drawing, the pulpis mixed well in a Pachuca tank of small size, overflowing into therougher flotation-cell. The tailing from this rougher goes to a sand-pump and is returned to the Pachuca. The froth is treated in a TESTING ORES FOR THE FLOTATION PROCESS—II 295 AiK Connection. Air Holes Fig. 68. the square glass jar machine for making flotation tests. 296 THE FLOTATION PROCESS second and smaller pneumatic-flotation unit, giving a concentratethat overflows into an ordinary laboratory vacuum-filter actuatedby a water or aspirating pump. The tailing from the cleaner-cellconsists of a middling that likewise flows to the sand-pump andbackto the Pachuca. Pulley.
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Keywords: ., bookcentury1900, bookdecade1910, bookidflotationpro, bookyear1916
