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Purification method for quartz sand raw material

A purification method, quartz sand technology, applied in chemical instruments and methods, lighting and heating equipment, dryers, etc., can solve problems such as inability to function, achieve low production costs, excellent product quality, and improve fluidity

Active Publication Date: 2022-01-07
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of iron oxide in the quartz sand raw ore treated by this method is only 0.02-0.06%, and this method can only treat quartz sand with low iron oxide content, and cannot play a role in quartz ore with high iron oxide content.

Method used

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  • Purification method for quartz sand raw material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for purifying quartz sand raw materials, such as process flow diagram figure 1 As shown, including the following steps:

[0038] (1) is selected from the material: 4mm or less in size, SiO 2 Ordinary quartz sand content of approximately 95% (crude concentrate quartz sand), quartz sand iron oxide content of 0.02% to 0.50%.

[0039] (2) Screening: quartz sand material delivered to the first vibrating sieve (pore diameter 0.83mm) for a sieved to give a particle size below 0.83mm quartz sand; and the particle size of quartz sand 0.83mm or less conveyed to another vibrating sieve (pore diameter 0.15mm) for secondary sieved to give a particle size between 0.15 ~ 0.83mm quartz sand and silica sand in particle sizes of 0.15mm or less; and then the particle size of 0.15mm or less quartz sand conveyed to another vibrating screen (0.045mm sieve aperture) to a tertiary sieved to give a particle size between 0.045 ~ 0.15mm quartz sand and silica sand in particle sizes of 0.045m...

Embodiment 2

[0050] A method for purifying quartz sand material, comprising the steps of:

[0051] (1) is selected from the material: 4mm or less in size, SiO 2 Ordinary quartz sand content of approximately 96% (crude concentrate quartz sand), quartz sand iron oxide content of 0.02% to 0.50%.

[0052] (2) Screening: quartz sand material delivered to the first vibrating sieve (pore diameter 0.83mm) for a sieved to give a particle size below 0.83mm quartz sand; and the particle size of quartz sand 0.83mm or less conveyed to another vibrating sieve (pore diameter 0.15mm) for secondary sieved to give a particle size between 0.15 ~ 0.83mm quartz sand and silica sand in particle sizes of 0.15mm or less; and then the particle size of 0.15mm or less quartz sand conveyed to another vibrating screen (0.045mm sieve aperture) to a tertiary sieved to give a particle size between 0.045 ~ 0.15mm quartz sand and silica sand in particle sizes of 0.045mm or less; selected particle size 0.15 quartz sand between ...

Embodiment 3

[0063] A method for purifying quartz sand material, comprising the steps of:

[0064] (1) is selected from the material: 4mm or less in size, SiO 2 Ordinary quartz sand content of approximately 97% (crude concentrate quartz sand), quartz sand iron oxide content of 0.02% to 0.50%.

[0065](2) Screening: quartz sand material delivered to the first vibrating sieve (pore diameter 0.83mm) for a sieved to give a particle size below 0.83mm quartz sand; and the particle size of quartz sand 0.83mm or less conveyed to another vibrating sieve (pore diameter 0.15mm) for secondary sieved to give a particle size between 0.15 ~ 0.83mm quartz sand and silica sand in particle sizes of 0.15mm or less; and then the particle size of 0.15mm or less quartz sand conveyed to another vibrating screen (0.045mm sieve aperture) to a tertiary sieved to give a particle size between 0.045 ~ 0.15mm quartz sand and silica sand in particle sizes of 0.045mm or less; selected particle size 0.15 quartz sand between ~...

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Abstract

The invention provides a purification method for a quartz sand raw material. The purification method comprises the following steps of (1) screening, specifically, conducting screening treatment to obtain quartz sands with the granularity of 0.83mm or below and the water content controlled below 3%; (2) magnetic separation, specifically, conveying the quartz sands into a double-drum magnetic separator for magnetic roughing treatment and magnetic concentration treatment in sequence; (3) drying, specifically, controlling a discharging temperature of the dried quartz sands to be 70-120 DEG C; and (4) electric separation, specifically, conducting electric separation on the quartz sands, and controlling a separation voltage and a rotating speed of each drum to obtain the high-purity quartz sands. The purification process disclosed by the invention has the advantages of simple flow, environmental protection without pollution, low production cost, excellent quality of a product, high production efficiency, high recovery rate and the like and can be suitable for purification treatment of quartz ores with relatively high iron oxide content; and the purified quartz sands can reach the quality standard of the high-purity quartz sands.

Description

Technical field [0001] The present invention belongs to the technical field of quartz sand production, in particular, it relates to a method of purifying quartz sand feedstock. Background technique [0002] Quartz sand is a physical and chemical properties are very stable silicate mineral, having a hard, wear characteristics, the chemical formula SiO 2 . Quartz sand is an important non-metallic mineral raw materials, not only widely used in the production of coatings, glass, steel, cast iron, corrosion, filtration, ceramics and refractories, construction, metallurgy, chemicals, plastics, rubber and other industries, but also in the aerospace, biological engineering, solar cells, electronics, optical communications, and military and other high-tech industries play an irreplaceable role. Purity quartz sand used in high-tech fields, in addition to the silica content up to standard requirements, the metal impurity content of iron, aluminum, which also has strict quality requirements....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B1/28B03C1/10B03C1/30B03C7/06F26B23/00
CPCB07B1/28B03C1/10B03C1/30B03C7/06F26B23/00
Inventor 张建文马崇振廖乾梁汉张华曾尚林张胜广陶斯尧
Owner CHANGSHA RES INST OF MINING & METALLURGY
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