Method for preparing zirconium silicate powder by using zirconium-containing waste

A waste, zirconium silicate technology, applied in the field of ceramic materials, can solve the problems of radioactive hazards, unsuitable for industrial production, environmental pollution, etc., and achieve the effect of ensuring product performance, cost reduction, and cost reduction

Inactive Publication Date: 2018-01-12
JIANGSU MIRAFUL NANO MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent "A Preparation Method of Zirconium Silicate Powder" (201110455917.7) reported that Zr℃l 2 ·8H 2 O. Tetraethyl orthosilicate and NaF are used as raw materials, the method of preparing sol first, then ultrasonic reaction, suction filtration, washing, and drying to prepare zirconium silicate powder, the obtained zirconium silicate grain size distribution is narrow, and the crystal form is controllable. But the cost is high, not suitable for industrial production
The production and cutting of zirconium-containing bricks will produce a large amount of zirconium-containing waste. The damage and scrapping caused by the long-term use of high-temperature kilns will also produce a large amount of zirconium-containing waste. Direct disposal not only wastes a large amount of important mineral resources, but also pollutes the environment. Important and prone to radioactive hazards
There is no research report on the production of zirconium silicate powder from zirconium-containing waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Raw material powder ball milling: According to the mass ratio, waste zirconium powder: zircon sand: quartz powder: water: water reducing agent is 18.9:75.7:5.3:95:0.0375, weighed and mixed in a ball mill for 36 hours , to obtain composite slurry. The total amount of dry material feeding is 5 tons. Among them, the particle size of waste zirconium powder is 200 mesh, and its chemical composition is: zirconia content 31.5%, silicon oxide content 17%, alumina content 42%. The zircon sand is imported from Australia, with a particle size of 100 mesh; the quartz powder is commercial quartz powder, with a particle size of 200 mesh; the water reducing agent is sodium hexametaphosphate.

[0027] (2) Slurry homogenization

[0028] Put the composite slurry obtained in step (1) from the ball mill into the slurry storage tank, and homogenize the slurry by stirring. The stirring rate was 20 RPM for 30 minutes. A homogenized slurry is obtained.

[0029] (3) Iron removal

[00...

Embodiment 2

[0042] (1) Raw material powder ball mill: waste zirconium powder: zircon sand: quartz powder: water: water reducing agent is weighed and mixed according to the mass ratio of 15.2:76.8:5.8:100:0.05, and the total amount of dry material is 5 Tons, placed in a ball mill and ball milled for 24 hours to obtain a composite slurry. Among them, the particle size of waste zirconium powder is 20 mesh, and its chemical composition is: 33.2% zirconia content, 17% silica content, and 42% alumina content. The zircon sand is imported from Australia, with a particle size of 110 mesh; the quartz powder is commercial quartz powder, with a particle size of 1000 mesh; the water reducing agent is sodium tripolyphosphate.

[0043] (2) Slurry homogenization

[0044] Put the composite slurry obtained in step (1) from the ball mill into the slurry storage tank, and homogenize the slurry by stirring. The stirring rate was 50 RPM and the time was 60 minutes. A homogenized slurry was obtained.

[004...

Embodiment 3

[0055] (1) Raw material powder ball mill: zircon sand: quartz powder: water: water reducing agent is weighed and mixed according to the ratio of mass ratio 16.5:82.5:8.5:90:0.1. After 30 hours, composite slurry was obtained. Among them, the particle size of waste zirconium powder is 200 mesh, and its chemical composition is: 29% zirconia content, 17% silica content, and 42% alumina content. The zircon sand is zircon sand imported from Australia, with a particle size of 120 mesh; the quartz powder is commercial quartz powder, with a particle size of 800 mesh; 1:1.

[0056] All the other processes and parameters are the same as in Example 1.

[0057] The particle size was analyzed by Euro-American laser particle size analyzer, D50= 1.08 micron; D90= 1.46 micron. The transparent frit glaze BF-265 of Baifu Company is used to add 20% of the above-mentioned zirconium silicate powder, and the glaze is drawn evenly with an Italian glaze puller. After calcination at 1200°C for 2 hou...

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Abstract

The invention belongs to the field of ceramic materials, and specifically relates to a method for preparing zirconium silicate powder by using a zirconium-containing waste. The method comprises the following steps: using the raw materials such as waste zirconium powder, zircon sand, quartz powder, water and a water reducing agent in the mass ratio of (15 -25 to 65-85 to 2-10 to 80-100 to 0.01-1; carrying out ball milling, pulping homogenization, iron removal, filtering, drying and powder packaging. The waste zirconium powder is used as a raw material for replacing the zircon sand, the contentof zirconium in the zirconium silicate powder product is obviously reduced, the whiteness value of a glaze remains unchanged basically, a solid-phase reaction of the quartz powder and aluminum oxide in the waste zirconium powder occurs at high a temperature, and mullite with stabler structure and higher whiteness is generated, therefore, the global stability and emulsion effect of the system are strengthened.

Description

technical field [0001] The invention belongs to the field of ceramic materials, and specifically relates to a method for preparing zirconium silicate powder by using zirconium-containing waste. Since the traditional high-purity zircon sand raw material is partially replaced by the zirconium-containing waste, the production cost can be significantly reduced, and it is used for architectural decoration. Tiles, household ceramics, sanitary ware ceramics and other fields. Background technique [0002] Zirconium silicate (ZrSiO 4 ) is a high-quality, cheap opacifier and whitening agent, which is widely used in the production of various architectural ceramics, sanitary ceramics, daily-use ceramics, first-class handicraft ceramics, etc. , a wide range of applications and a large amount of applications. The reason why zirconium silicate is widely used in the production of ceramics is that it is not affected by the firing atmosphere of ceramics because of its good chemical stabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/20C03C8/00C03C1/00
Inventor 王美兰王传胜王宇旭
Owner JIANGSU MIRAFUL NANO MATERIAL CO LTD
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