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Method of producing high-purity quartz sand without producing quartz tailings

A production method, the technology of quartz tailings, applied in the direction of silica, solid separation, silica, etc., to achieve the effect of high raw material utilization rate, high product purity, and less facility investment

Pending Publication Date: 2019-04-23
HUANGGANG NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not produce any quartz tailings in the process of producing quartz sand, and successfully avoids the disadvantage of a large amount of quartz tailings in wet production. It is a production method with high raw material utilization rate, energy saving and environmental protection.

Method used

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  • Method of producing high-purity quartz sand without producing quartz tailings
  • Method of producing high-purity quartz sand without producing quartz tailings
  • Method of producing high-purity quartz sand without producing quartz tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The process of the present invention is described as raw material with the quartzite ore produced in a certain place in Guangdong:

[0037] 1. Pretreatment of ore: Wash the yellow ore purchased from the mine with tap water first, and then crush it with a 400×600 jaw crusher until the particle size is 10-50mm for use; the material below 10mm is separated for another For other purposes, it can be used as raw material for foundry sand; the waste water after washing the ore is purified and then recycled;

[0038] 2. chemical treatment: the material in the step 1 is sent into the pickling purification device of the publication number CN103382087B with 5wt% concentration oxalic acid at 95 DEG C to carry out the acid liquid circulation heating chemical impurity removal treatment after 4 hours, let off the acid liquid, After washing the ore particles with tap water until neutral, all the yellow on the surface of the quartz particles will be eliminated and become as white as sno...

Embodiment 2

[0052] The process of the present invention is described as raw material with the produced vein quartzite ore of a certain in Hubei:

[0053] 1. Pretreatment of ore: Wash the ore polluted by yellow mud purchased from the mine with tap water first, then use a 400×600 jaw crusher to crush it into particles with a particle size of 10-50mm for use; the waste water after washing the ore Recycle after purification;

[0054]2. chemical treatment: the material in the step 1 is sent into the pickling purification device of the publication number CN103382087B with 20wt% concentration hydrochloric acid at 90 DEG C to carry out the acid liquid circulation heating chemical impurity removal treatment after 4 hours, let off the acid liquid, After washing the ore particles with tap water to neutral, all the yellow on the surface of the quartz particles will be eliminated and become translucent, and then the washed quartz particles will be sent to drying for later use; the washing water for wa...

Embodiment 3

[0068] The process of the present invention is described as raw material with the quartzite ore produced in a certain place in Anhui:

[0069] 1. Pretreatment of ore: Wash the yellow ore purchased from the mine with tap water first, and then crush it with a 400×600 jaw crusher to a particle size of 10-50mm for use; the wastewater after washing the ore is purified recycle;

[0070] 2. Chemical treatment: send the material in step 1 into the pickling purification device with publication number CN103382087B and use 2%wt HF at 80°C to carry out the acid liquid circulation heating and chemical impurity removal treatment for 4 hours, then let off the acid liquid, After the ore particles are washed with tap water to neutral, the yellow color on the surface of the quartz particles is completely eliminated, and then the washed quartz particles are sent to drying for standby; the washing water for washing the quartz particles is sent to the water treatment station to neutralize and prec...

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Abstract

The invention provides a method of producing high-purity quartz sand without producing quartz tailings. The method includes: washing a raw ore with water, crushing, chemically washing, performing color sorting, calcining, carrying out water quenching, drying by airing or baking, performing color sorting, making sand, screening, magnetically separating, performing color sorting, and packaging finished products; magnetically separating screen underflow, carrying out ball milling to obtain powder, screening, and packaging finished products. No tailings are produced in the whole production process; water is greatly saved; product quality is improved; the greatest advantage is that no tailing waste is produced in the production method; wastewater pollution and dust pollution are effectively solved; the method is an energy-efficient environment-friendly production technique.

Description

technical field [0001] The invention relates to a method for producing quartz sand without producing quartz tailings, and belongs to the technical field of non-metallic ore deep processing. Background technique [0002] As an important non-metallic mineral resource and raw material product, quartz sand is widely used in glass, ceramics, cement, refractory materials, steel, non-ferrous metals, foundry, chemical industry, petroleum exploration and other industries. However, the production process of quartz sand is mostly prepared by wet production process. Its main characteristics are: mature and simple process, large output, low production cost, relatively stable product quality, and large-scale production; but its disadvantages are: wet process The amount of water required for production is large, the water treatment facilities are large, and the amount of tailings produced during the production process is large. According to decades of production experience, about 0.3 tons ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12B03B9/00
CPCB03B9/00C01B33/12
Inventor 田辉明田正芳黄林勇陈中文杨水彬雷绍民
Owner HUANGGANG NORMAL UNIV
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