Technique for recycling potassium feldspar from potassium-rich slate

A process method, technology of potassium-rich slate, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve problems such as low potassium content in ore, high roasting slag content, and impact, and achieve optimal combination ratio, Reduce the amount of slagging and reduce the effect of adverse effects

Active Publication Date: 2018-07-31
BAOTOU IRON & STEEL GRP
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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
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Method used

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  • Technique for recycling potassium feldspar from potassium-rich slate

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Embodiment

[0052] The technological method of reclaiming potassium feldspar in embodiment, potassium-rich slate

[0053] Step 1. Processing of raw materials

[0054] The potassium-rich slate is crushed in three stages of coarse crushing, medium crushing and fine crushing, and the particle size of the crushed product is -3mm;

[0055] Step 2. Grinding

[0056] Grinding the above crushed products, the particle size of the grinding products is -0.074mm, accounting for 81.4%;

[0057] Step 3, carrying out a section of magnetic separation on the above-mentioned grinding product under the condition of a magnetic field strength of 179.1kA / m, to obtain magnetic separation concentrate and magnetic separation tailings;

[0058] After testing, the sulfur content in the magnetic separation concentrate is 10.41%, and the recovery rate is 44.50%; the potassium oxide content in the magnetic separation tailings is 10.70%, the potassium oxide recovery rate is 95.33%, and the sulfur content is 1.41%;

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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...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03C1/30B03D101/02B03D103/10
CPCB03C1/30B03D1/018B03D2201/02B03D2203/10
Inventor 姬俊梅刘凤国李满年彭艳荣江峰吕晓艳谢育林
Owner BAOTOU IRON & STEEL GRP
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