Floatation method for silica-calcium collophane with difficult separation

Abstract

The invention discloses a floatation method for a silica-calcium collophane with difficult separation. According to the detailed technology, the floatation method includes the steps that (1) breaking and grinding are performed on the silica-calcium collophane; (2), a sulfate mineral negative ion collecting agent, a phosphate mineral negative ion collecting agent and a carbonate mineral negative ion collecting agent are respectively added into ore pulp for mixing and mineralizing, and air inflation is performed for reverse floatation; (3), magnesium removal phosphate ore concentrate is graded; (4), the ore pulp concentration of a coarsely graded phosphate ore concentrate is controlled, then sodium carbonate mineral positive ions and silicate mineral positive ions are respectively added for pulp mixing and mineralizing, and air inflation is performed for reverse floatation; (5), a finely graded phosphate ore concentrate and a desilication phosphate ore concentrate are mixed, and carbonate impurities and silicate impurities are mixed. The problems that because the carbonate impurities are removed only through single reverse floatation, the phosphate ore concentrate is not high in content and high in silicate impurity content, the requirement for the phosphate ore concentrate used for wet-process phosphoric acid can not be met, and then in the process that the silicate impurities are removed through reverse floatation, floatation froth is sticky, not prone to breaking and poor in ore pulp flowability due to the existence of a great deal of slurry are solved, and the floatation method is adaptive to the silica-calcium collophane and efficient in impurity removal.

Description

technical field [0001] The invention relates to a flotation process in which after removing carbonate impurities from silicon-calcium colloidal phosphate ore through reverse flotation, the phosphorous concentrate obtained is classified, and the coarse-grained products are subjected to reverse flotation to remove silicates. craft. Background technique [0002] With the gradual depletion of phosphate rock and the sharp rise in mining costs, the price of phosphate concentrate is relatively low, making the cost of flotation always at a low cost. With the decline of the quality of collophosite raw ore and the increase of impurity content, only by removing carbonate impurities can no longer meet the requirements of wet-process phosphoric acid ore. Therefore, it is urgent to research and develop a kind of phosphate with strong adaptability and good flotation effect. , low cost, easy to operate and control the flotation process of silicon-calcium refractory colloidal phosphate rock...

AI Technical Summary

Problems solved by technology

With the decline of the quality of collophosite raw ore and the increase of impurity content, only by removing carbonate impurities can no longer meet the requirements of wet-process phosphoric acid ore. Therefore, it is urgent to research and develop a kind of phosphate with strong adaptability and good flotation effect. Flotation process of silicon-calcium refractory colloidal phosphate rock with low cost and easy operation and control

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