Preparation method and application of active zirconium dioxide

A zirconium dioxide and active technology, applied in zirconia and other directions, can solve the problems that the composition and activity of fused zirconia cannot reach chemical zirconium, the production cost of chemical zirconium is high, and the production cost of zirconium iron red material is high. The effect of good color effect, lower production cost and high wrapping rate

Inactive Publication Date: 2013-12-25
SHENGQUAN FUJIAN GLAZE MAKING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the ceramic color industry rarely uses fused zirconia to produce zirconium iron red material, mainly because the synthesis principle of zirconium iron red material is different from other zirconium series pigments such as praseodymium yellow and vanadium blue, etc. zirconium iron red material belongs to semi Wrapped pigments, and fused zirconia does not meet the requirements of chemical zirconium in terms of composition and activity, so it cannot replace chemical zirconium to produce zirconium-iron red material, but the production cost of chemical zirconium is high, resulting in the production cost of zirconium-iron red material higher

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  • Preparation method and application of active zirconium dioxide
  • Preparation method and application of active zirconium dioxide

Examples

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Effect test

Embodiment 1

[0029] A preparation method of active zirconium dioxide, first mixing 100Kg of zircon sand and 5Kg of carbon black and then electro-melting and calcining to obtain desiliconized zirconium, the zircon sand is 80 mesh, the zirconium content is 66%, and then hydrogenated Sodium zirconate is obtained by alkali fusion calcination. The calcination temperature of alkali fusion calcination is 1250°C. After sodium zirconate is hydrolyzed, hydrochloric acid is added to neutralize to form zirconium hydroxide and sodium chloride, and then sodium hydroxide is added to control the pH value at 8-9. , and finally wash and remove sodium chloride and dry the material to obtain active zirconia.

[0030] The activated zirconium dioxide obtained in this example is used for the production of zirconium iron red material.

[0031] A zirconium-iron red material, prepared from the following raw materials in weight ratio: 20wt% silicon dioxide, 10wt% ferric oxide, 0.5wt% potassium fluorosilicate, 2.5wt%...

Embodiment 2

[0033] A preparation method of active zirconia, first mix 100Kg of zircon sand and 7.5Kg of graphite, then conduct electric melting and calcining to obtain desiliconized zirconium. Sodium zirconate is obtained by alkali fusion calcination. The calcination temperature of alkali fusion calcination is 1275°C. After sodium zirconate is hydrolyzed, hydrochloric acid is added to neutralize to form zirconium hydroxide and sodium chloride, and then sodium hydroxide is added to control the pH value at 8-9. , and finally wash and remove sodium chloride and dry the material to obtain active zirconia.

[0034] The activated zirconium dioxide obtained in this example is used for the production of zirconium iron red material.

[0035] A zirconium-iron red material, prepared from the following raw materials in weight ratio: 28wt% of silicon dioxide, 15wt% of ferric oxide, 1wt% of sodium fluorosilicate, 2wt% of magnesium fluoride, 2wt% of lanthanum fluoride, fluorine Ceria 2wt% and the activ...

Embodiment 3

[0037] A preparation method of active zirconium dioxide, first mix 100Kg of zircon sand and 10Kg of water-washed coal, then conduct electric melting and calcining to obtain desiliconized zirconium, the zircon sand is 120 mesh, the zirconium content is 70%, and then add sodium carbonate Alkali fusion calcination is carried out to obtain sodium zirconate. The calcination temperature of alkali fusion calcination is 1300°C. After sodium zirconate is hydrolyzed, sulfuric acid is added to neutralize to form zirconium hydroxide and sodium sulfate, and then sodium hydroxide is added to control the pH value at 8-9. Finally After cleaning and removing sodium sulfate, the material is dried to obtain active zirconia.

[0038] The activated zirconium dioxide obtained in this example is used for the production of zirconium iron red material.

[0039] A zirconium-iron red material, prepared from the following raw materials in weight ratio: 23wt% of silicon dioxide, 11.5wt% of ferric oxide, 2...

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Abstract

The invention discloses a preparation method of active zirconium dioxide. The preparation method comprises the steps of firstly mixing zircon sand with a carbon reducing agent and then performing electric smelting calcining to obtain desiliconized zirconium; adding alkali and performing alkali fusion calcining to obtain sodium zirconate; hydrolyzing sodium zirconate and adding acid for neutralizing to form zirconium hydroxide and sodium salt; then adding sodium hydroxide and controlling the pH value to be 8-9; and finally washing to remove sodium salt and drying materials to obtain active zirconium dioxide. The active zirconium oxide prepared by adopting the preparation method contains zirconium dioxide of tetragonal crystal phase, has high activity and is suitable for manufacturing ferrozirconium pigment; in addition, side products generated in the preparation process does not pollute the environment and thus the environment-friendly and pollution-free effects are achieved; silicon is converted into silicon dioxide to be recycled after being subjected to electric smelting calcining; after the preparation is completed, all sodium is converted into sodium chloride or sodium sulfate to be recycled.

Description

technical field [0001] The invention relates to a preparation method and application of active zirconium dioxide. Background technique [0002] Zirconia is divided into chemical zirconia and fused zirconia according to different production processes. Chemical zirconia is produced by chlor-alkali chemical engineering and high-temperature calcination. The product has high purity and good quality, but the production process is long and requires a large amount of acid-base reagents. Therefore, the production cost is high. Fused zirconia is produced by electric arc furnace smelting. The process is shorter and the production cost is lower, but the purity and some physical properties of the product are slightly inferior. [0003] In the chemical method, most of the sodium and silicon in the alkali fusion method enter the aqueous solution and are discharged as waste water. Because the concentration of sodium silicate in the solution is low, the recovery is uneconomical, and the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02C04B41/85
Inventor 王护来
Owner SHENGQUAN FUJIAN GLAZE MAKING CO LTD
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