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A kind of preparation method of modified quartz sand

A technology of quartz sand and quartz sand powder, applied in the direction of silica, silicon oxide, etc., can solve the problems of unsatisfactory performance, uniform modification of quartz sand, etc., and achieve dense structure, stable properties, and strong binding force Effect

Active Publication Date: 2020-05-19
兰陵县益新矿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is difficult to achieve uniform modification on the surface modification of quartz sand, and the performance after modification cannot reach the ideal effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing modified quartz sand, comprising the following steps:

[0029] (1) Scrubbing: use a mechanical scrubbing machine to scrub the quartz sand;

[0030] (2) ball milling and screening: carry out wet ball milling to quartz sand, pass through 100 mesh sieves after ball milling, obtain quartz sand powder;

[0031] (3) Coating modification: mix the quartz sand powder and the modifier evenly, and stir at 90°C for 2 hours;

[0032] The modifying agent includes o-phenylenediamine, p-toluenesulfonic acid, sodium silicate, tribenzyl aluminate and auxiliary agents. The preparation method of the modifying agent is: heating the auxiliary agent to 42°C, adding p-methyl Mix benzenesulfonic acid and tribenzyl aluminate evenly, raise the temperature of the mixture to 55°C, add o-phenylenediamine, stir, mix well, put the sodium silicate in an oven at 150°C for 1 hour, take it out immediately put into the mixed solution, stir evenly, and obtain the modifying agent;

...

Embodiment 2

[0041] A method for preparing modified quartz sand, comprising the following steps:

[0042] (1) Scrubbing: use a mechanical scrubbing machine to scrub the quartz sand;

[0043] (2) ball milling and screening: carry out wet ball milling to quartz sand, pass through 100 mesh sieves after ball milling, obtain quartz sand powder;

[0044] (3) Coating modification: mix the quartz sand powder and modifier evenly, and stir at 95°C for 2 hours;

[0045] The modifying agent includes o-phenylenediamine, p-toluenesulfonic acid, sodium silicate, tribenzyl aluminate and auxiliary agents. The preparation method of the modifying agent is: heating the auxiliary agent to 40°C, adding p-methyl Mix benzenesulfonic acid and tribenzyl aluminate evenly, raise the temperature of the mixture to 56°C, add o-phenylenediamine, stir, mix well, put the sodium silicate in an oven at 140°C for 2 hours, take it out immediately put into the mixed solution, stir evenly, and obtain the modifying agent;

[0...

Embodiment 3

[0054] A method for preparing modified quartz sand, comprising the following steps:

[0055] (1) Scrubbing: use a mechanical scrubbing machine to scrub the quartz sand;

[0056] (2) ball milling and screening: carry out wet ball milling to quartz sand, pass through 100 mesh sieves after ball milling, obtain quartz sand powder;

[0057] (3) Coating modification: mix the quartz sand powder and modifier evenly, and stir at 90°C for 3 hours;

[0058] The modifying agent includes o-phenylenediamine, p-toluenesulfonic acid, sodium silicate, tribenzyl aluminate and auxiliary agents. The preparation method of the modifying agent is: heating the auxiliary agent to 45°C, adding p-methyl Mix benzenesulfonic acid and tribenzyl aluminate evenly, raise the temperature of the mixture to 58°C, add o-phenylenediamine, stir, mix well, put the sodium silicate in an oven at 130°C for 1 hour, take it out immediately put into the mixed solution, stir evenly, and obtain the modifying agent;

[00...

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PUM

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Abstract

The invention provides a modified quartz sand preparation method, and relates to the technical field of quartz sand processing. The method comprises scrubbing, ball milling, coating, drying and sintering processes. The ball milling process is adopted to ball-mill quartz sand into smaller granularities before modification, so that quartz sand powder is favorably dispersed better, the modification uniformity is further improved, and the modification quality is improved. The quartz sand powder is coated and modified with stirring at relatively high temperature, so that the coating probability of all the quartz sand is consistent. By the sintering process, volatile substances in a modifier can be removed, and meanwhile, a coating material is denser in structure and stronger in bonding strength with a quartz sand matrix, and is unlikely to be separated from the surface of the quartz sand, so that the modified quartz sand is stable in property.

Description

technical field [0001] The invention relates to the technical field of quartz sand processing, in particular to a preparation method of modified quartz sand. Background technique [0002] Quartz sand is a quartz particle made by crushing quartz stone. Quartz stone is a non-metallic mineral, a hard, wear-resistant, chemically stable silicate mineral, and its main mineral component is SiO 2 . The color of quartz sand is milky white, or colorless and translucent, with a Mohs hardness of 7. [0003] Quartz sand is an important industrial mineral raw material, non-chemical dangerous goods, widely used in glass, casting, ceramics and fireproof materials, ferrosilicon smelting, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter materials and other industries. [0004] The surface modification of quartz sand is to optimize the properties of quartz sand to open up new application fields and improve its industrial value and added va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/18
CPCC01B33/18
Inventor 黄永武黄林新
Owner 兰陵县益新矿业科技有限公司
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