Technique for recycling potassium feldspar from potassium-rich slate

Abstract

The invention discloses a technique for recycling potassium feldspar from potassium-rich slate. The technique comprises the following steps of: crushing the potassium-rich slate; grinding ores; performing magnetic separation; and subsequently adding an activating agent and a collecting agent to implement flotation separation so as to obtain potassium feldspar ore concentrations, wherein the intensity of a magnetic field for magnetic separation is 159 kA / m to 199 kA / m; the activating agent is a mixture of oxalic acid and copper sulfate; and the collecting agent is a mixture of isobutyl xanthateand mixed amine. The technique for recycling the potassium feldspar from the potassium-rich slate optimizes the combination proportion of flotation reagents, effectively removes impurities and harmful element sulfur existing in the potassium feldspar, obtains high-quality potassium feldspar ore concentrations, reduces the amount of generated slags in subsequent operation and greatly reduces adverse effects of the sulfur.

Description

technical field [0001] The invention relates to the technical field of mining engineering, in particular to a process method for recovering potassium feldspar. Background technique [0002] Potassium-rich slate is mainly composed of potassium feldspar, followed by hornblende, biotite, sodium pyroxene, pyrrhotite, hematite, etc., and a small amount of quartz, pyrite, etc. Among them, pyrrhotite often coexists with hematite in irregular flakes, and the local content can reach 10%. The average grade of potassium oxide in general potassium ore is 10.58%, and the sulfur content is about 2.4%. If the ore is roasted directly, due to the low grade of potassium oxide and high sulfur content, more slag and slag will be produced during the roasting process. Therefore, before using the ore, the ore should be beneficiated to remove pyrrhotite, pyrite, sodium pyroxene, hornblende, biotite and other gangue minerals, and select qualified potassium feldspar concentrate [0003] In recent y...

AI Technical Summary

Problems solved by technology

There is no research on beneficiation of potassium-rich slate and how to select qualified potassium feldspar, resulting in a large amount of slag in the follow-up research, and the presence of sulfur is also unfavorable to subsequent operations such as roasting and leaching. influences

[0004] Therefore, those skilled in the art are committed to developing a process for recovering potassium feldspar from potassium-rich slate, so as to solve the defects of low potassium content of potassium-rich slate ore and high amount of subsequent roasting slag in the above-mentioned prior art

Images