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Degradation method of potassium feldspar

A potassium feldspar and process technology, applied in the field of potassium feldspar powder processing, can solve the problems of heavy pollution, low potassium yield, high energy consumption, etc., achieve the effects of shortening reaction time, high recycling rate, and improving potassium dissolution rate

Inactive Publication Date: 2018-11-30
贺州市骏鑫矿产品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still technical problems such as high energy consumption, low potassium yield, low utilization rate of raw materials, heavy pollution, and inability to scale production.

Method used

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  • Degradation method of potassium feldspar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of decomposition technique of potassium feldspar, comprises the following steps:

[0022] S1. Grinding: Grinding the potassium feldspar ore to a fineness of 200 mesh.

[0023] S2. Microwave treatment: microwave the potassium feldspar ore powder for 20 minutes, then cool it down for later use. The power of the microwave treatment is 800W.

[0024] S3. Dosing: mix the microwave-treated potassium feldspar powder and fluorine-containing acid with a mass concentration of 20% in a mass ratio of 1:3, and stir evenly. The fluorine-containing acid is a mixed acid composed of fluorosilicic acid and hydrofluoric acid in any molar ratio.

[0025] S4. Decomposition reaction: add the ingredients into the reaction kettle, stir, heat up, keep the temperature in the kettle at 80°C, and keep the temperature for 4 hours to generate silicon tetrafluoride gas and soluble salts, add ammonia water to the soluble salts and heat Stirring for neutralization produces a solution containi...

Embodiment 2

[0028] A decomposition process of potassium feldspar, compared with Example 1, S2. The power in microwave treatment is 900W. Other steps are the same.

Embodiment 3

[0030] A decomposition process of potassium feldspar, compared with Example 1, S2. The power in microwave treatment is 950W. Other steps are the same.

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Abstract

The invention provides a degradation method of potassium feldspar. The degradation method comprises following steps: grinding, microwave processing, material preparation, and degradation reaction, wherein potassium feldspar mineral powder is subjected to 10 to 30min of microwave processing, is cooled, is mixed with a fluorine containing acid with a mass concentration of 15 to 30% at a mass ratio of 1:1-5, and stirring is carried out for uniform reaction. According to the degradation method, degradation technology is adopted for pretreatment of potassium feldspar, and then low temperature hydro-thermal reaction is carried out, so that reaction time is shortened effectively, and potassium leaching rate is increased.

Description

technical field [0001] The invention relates to the technical field of potassium feldspar powder processing, in particular to a decomposition process of potassium feldspar. Background technique [0002] my country's water-soluble potassium salt reserves account for a small proportion of global reserves, but my country's annual demand for potassium fertilizers is relatively high, exceeding 10 million tons (calculated as potassium chloride), of which about 50% need to be imported. And my country's non-water-soluble potassium salts Potassium rocks are very rich, so how to turn the potassium in water-insoluble potassium-containing rocks into potash fertilizers has always been the focus of attention in the industry. Potassium-rich rocks dominated by potassium feldspar have huge reserves in my country, and there are many studies on potassium extraction from potassium feldspar. At present, high-temperature melting method, microbial method, hydrothermal method, and low-temperature me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12C01F7/74C05C3/00
Inventor 邓培有
Owner 贺州市骏鑫矿产品有限责任公司