Method for using kaolin tailings for preparing quartz sand for glass production

A technology of kaolin tailings and quartz sand, which is applied in the field of kaolin tailings treatment, can solve the problems of poor purity of quartz sand, complicated processing process, dust pollution, etc., and achieve the goal of ensuring product purity, no environmental pollution, and comprehensive energy consumption reduction Effect

Active Publication Date: 2015-07-01
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, the above method has problems such as complex processing process, high energy consumption, dust pollution and poor purity of quartz sand.

Method used

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  • Method for using kaolin tailings for preparing quartz sand for glass production

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Experimental program
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Effect test

Embodiment

[0022] (1) Adding water to the kaolin tailings, pounding and dispersing at a high speed with a frequency-variable speed-regulating disperser to obtain a suspension with a solid content of 30-40wt%, and the speed of the frequency-variable speed-regulating disperser is 1000rpm;

[0023] (2) The dispersed suspension is pre-classified by centrifugal classification equipment, and the fine sand with a particle size of less than 0.7mm is directly entered into step (5) centrifugal classification equipment for classification;

[0024] (3) Coarse sand with a particle size greater than 0.7 mm enters the rod mill for grinding to obtain a slurry, and the slurry is classified through a centrifugal classification device to obtain fine sand with a particle size of less than 0.7 mm and enters step (5), with a particle size greater than 0.7 The coarse sand of mm is returned to the rod mill grinding equipment for grinding again;

[0025] (4) Repeat step (3) several times until the particle size ...

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Abstract

The invention discloses a method for using kaolin tailings for preparing quartz sand for glass production. The method comprises the following steps of: dispersing the kaolin tailings at high speed by pulping to get suspension liquid, then, pre-classifying by a centrifugal classification device to get fine sand of which the granularity is less than 0.7mm and the coarse sand of which the granularity is more than 0.7mm, conveying the obtained fine sand into the centrifugal classification device, grinding the coarse sand by a rod mill, and processing the coarse sand by the centrifugal classification device until the granularity of the obtained sand tailings is less than 0.7mm, classifying and purifying the fine sand of which the granularity is less than 0.7mm by the centrifugal classification device, obtaining the fine sand of which the Fe2O3 content is less than 0.08wt%, then, performing dehydration to get the dry quartz sand. The invention provides a method for recycling the kaolin tailings, the method is simple in technical process, pollution-free and low in energy consumption, and the quartz sand product processed by the method reaches and exceeds the quartz sand usage standard of glass industry in the aspects of both components and granularity.

Description

technical field [0001] The invention relates to the field of kaolin tailings treatment, in particular to a method for preparing quartz sand for glass production by using kaolin tailings. Background technique [0002] Kaolin is an important non-metallic mineral material. It is not only a necessary raw material for traditional industries such as building materials and light industry, but also a basic material for the development of modern industry. With the rapid development of the national economy, kaolin mineral resources are continuously exploited and utilized. At present, the total amount of kaolin used in my country is about 6 million tons per year, of which about 1.5 million tons of kaolin products are purified and removed through mineral processing. However, due to the low utilization rate of kaolin resources, which is only about 20%, the mining and processing of kaolin A large amount of tailings will be produced in the mine, and the number is increasing year by year. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B1/00
Inventor 王燕民柯善军潘志东
Owner SOUTH CHINA UNIV OF TECH
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