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Method for producing electric melting zirconia for zirconium iron pink glazes

A technology of fused zirconia and a production method, applied in zirconia and other directions, can solve problems such as unreasonable particle size distribution range, and achieve the effects of improving aesthetics, improving brightness, and improving reactivity

Inactive Publication Date: 2012-10-24
KELIDA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the shortcomings of the unreasonable particle size distribution range in the prior art, and provides a production method of fused zirconia for zirconium-iron red glaze

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A production method of fused zirconia for zirconium-iron red glaze, comprising the following steps in sequence:

[0016] 1) Coarsely pulverize the fused zirconia hollow balls first, and control the particle size D50 at 13um;

[0017] 2) Feed the fused zirconia coarse powder into the jet mill, control the working pressure of the jet mill nozzle at 0.65Mpa, and adjust the operation control frequency of the induced draft fan to 35Hz;

[0018] 3) The operating control frequency of the classifier is adjusted to 35Hz, and the particle size distribution of the fused zirconia powder is strictly controlled so that D10 is not lower than 0.6um, D50 is kept at 2.5-3.0um, and the difference between D90 and D10 is not more than 6um.

Embodiment 2

[0020] A production method of fused zirconia for zirconium-iron red glaze, comprising the following steps in sequence:

[0021] 1) Coarsely pulverize the fused zirconia hollow balls first, and control the particle size D50 at 18um;

[0022] 2) Feed the fused zirconia coarse powder into the jet mill, control the working pressure of the jet mill nozzle at 0.8Mpa, and adjust the operation control frequency of the induced draft fan to 45Hz;

[0023] 3) The operating control frequency of the classifier is adjusted to 45Hz, and the particle size distribution of the fused zirconia powder is strictly controlled so that D10 is not lower than 0.6um, D50 is kept at 2.5-3.0um, and the difference between D90 and D10 is not more than 6um.

Embodiment 3

[0025] 1) Coarsely pulverize the fused zirconia hollow balls to control the particle size D50 at 15um;

[0026] 2) The fused zirconia coarse powder is fed into the jet mill, and the working pressure of the jet mill nozzle is controlled at 0.75Mpa, the operation control frequency of the induced draft fan is 40Hz, and the classifier operation control frequency is 40Hz;

[0027] 3) The operating control frequency of the classifier is adjusted to 40Hz, and the particle size distribution of the fused zirconia powder is strictly controlled so that D10 is not less than 0.6um, D50 is kept at 2.5-3.0um, and the difference between D90 and D10 does not exceed 6um.

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Abstract

The invention discloses a method for producing electric melting zirconia for zirconium iron pink glazes. The method sequentially includes the following steps of 1) subjecting an electric melting zirconia hollow sphere to a coarse grinding, and controlling the particle size D50 to be in a range from 13um to 18um; 2) feeding electric melting zirconia crude powders in a jet mill, controlling the working pressure of a jet milling nozzle to be in a range from 0.65Mpa to 0.8Mpa, and adjusting the operation control frequency of an induced draft fan to be in a range from 35Hz to 45Hz; and 3) adjusting the operation control frequency of a grader to be in a range from 35Hz to 45Hz, strictly controlling the particle size distribution of the electric melting zirconia powders, to enable D10 to be no less than 0.6 [mu]m, D50 to be maintained between 2.5[mu]m and 3.0[mu]m and the difference between D90 and D10 to be no more than 6um.

Description

technical field [0001] The invention belongs to the technical field of ceramic pigments, in particular to high-purity fused zirconia used in zirconium-iron red ceramic glazes. Background technique [0002] Zirconium-based ceramic pigments have excellent properties of bright color and good miscibility, so they occupy an important position in ceramic glazes and blank pigments. Among them, the most common and the most used are the three primary colors of the zirconium system: vanadium-zirconium blue and zirconium-praseodymium yellow , Zirconium iron red, its main crystal phase is zirconium silicate, which is formed by zirconia and quartz at high temperature. Therefore, the physical and chemical properties of zirconia, including chemical activity, microstructure, and powder particle size distribution, have a direct impact on the color development and high temperature stability of the entire ceramic pigment. [0003] Fused zirconia, which is commonly used for ceramic pigments at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02C04B41/86
Inventor 王敬文张清河梁国庆
Owner KELIDA SCI & TECH
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