Beneficiation of High-clay Potash Ores by Flotation.
Trans Soc Min Eng AIME 1972 Mar; 252:50-52
The Bureau of Mines has developed new and improved physical beneficiation techniques for economically recovering potash minerals from high-clay and low-grade ore from the Permian Basin of New Mexico. With the depletion of the high-grade ores a need for changes in industry's standard methods of recovery is a must. Technology may be improved in the beneficiation of the ore prior to mineral flotation and in brine clarification from the desliming phase to effect a reduction of losses of fine potash and brine in the disposal of the clay slimes. This report summarizes the results of these tests and demonstrates the feasibility of producing products that meet the requirements of the agriculture market, namely, 95 percent KCl equivalent to 60 percent K2O with recoveries ranging between 80 and 90 percent.
Trans. Soc. Min. Eng., AIME, V. 252, March 1972, PP. 50-52