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
CN103466697AInactive Publication Date: 2013-12-25SHENGQUAN FUJIAN GLAZE MAKING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENGQUAN FUJIAN GLAZE MAKING CO LTD
Publication Date
2013-12-25
Estimated Expiration
Not applicable · inactive patent

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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