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years, many phosphate producers have installed column flotation systems as a means of boosting production whilst reducing operating costs. History G.M. Callow patented the first pneumatic flotation cell, which used air sparging through a porous bottom and horizontal slurry flow, in 1914. The first countercurrent column flotation
Phosphate rock is recovered as sink concentrate and silica is recovered as float tailings. Use of reverse flotation for phosphate rock ore treatment, wherein starch is added first to depress phosphate rock particles, followed by addition of cationic reagent, e.g., amine to float the silica.
For Phosphate, flotation is, in general, very important to upgrading the phosphate rock and is employed in this study to beneficiate a 20% P2O5 feed content to a 30 32% P2O5 content. The growing fertilizer industry has increased the demand for phosphate rock from which super phosphates are produced. The fertilizer market is very competitive.
mechanical flotation cells to column flotation cells over a period of 2 years as part of a program to reduce plant operating costs. The ore is a volcanic phosphate ore containing approximately 20 %P 2O 5 primarily as apatite. Principal impurities are barite , hematite (19% to 20% Fe 2O