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Showing 1 to 4 of 4 for “"Pyrite depressants"”.
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Bacterial and chemical depression of pyrite in froth flotation of coal
Froth flotation was used to separate the pyrite sulfur and ash from pulverized coal samples of Illinois No. 6, Pittsburgh, and Middle Kittanning seams. In order to depress the coal pyrite in the flotation process, the coal samples were conditioned in "bacterial liquor." Iron oxidizing bacteria …
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Optimization of a Copper/Molybdenum Flotation Circuit by Depressing Pyrite from the Rougher Flotation Stage Using Different Scheme of Reagents
… to determine methods to hinder the flotation of pyrite, other than the specific use of lime, in rougher flotation was conducted. Specifically, the goal was to determine an effective alternative to pH adjustment using lime. Experiments were conducted using the most common selection of reagents: …
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Processing of high-sulfur coals using microbubble column flotation
… the u.S. Department of Energy. A wide variety of pyrite rejection schemes were tested including the use of pyrite depressants, dispersants and elevated pH conditions. The overall efficiency of the MCF process was characterized using a technique known as "release analysis". This technique was used …
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Depression of pyrite in polymetallic sulfide flotation using chitosan-grafted-polyacrylamide polymers
… were studied, for the first time, as selective depressants of pyrite in the flotation of base metal sulfides. Fundamental studies of the adsorption behavior of Chi-g-PAM on model sulfide minerals indicated that Chi-g-PAM was more selective to pyrite’s surfaces as compared to base metal sulfides. …