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A kind of method that utilizes chromium-containing waste liquid to prepare ceramic color glaze

A technology of waste liquid and color glaze, which is applied in the field of preparation of ceramic glass color glaze, can solve the problems of increased production costs of ceramic and glass color materials, and achieve the effect of improving thermal stability

Active Publication Date: 2017-03-01
JIANGSU BAIFU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, expensive chromium salts are mostly used in the production of ceramics and glass pigments, which greatly increases the production cost of ceramics and glass pigments.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The method for preparing pottery glaze by utilizing high chromium waste liquid comprises the following steps:

[0016] (1) Pretreatment of chromium-containing waste

[0017] Precipitate and separate the high-chromium waste liquid, and dry the precipitate; grind the dried high-chromium waste liquid through a 200-mesh sieve, and finally make balls to obtain spherical raw materials;

[0018] (2)Cr 6+ Transformation and initial stabilization

[0019] Spherical raw materials are roasted, the roasting temperature is 800°C, and the roasting time is 4 hours;

[0020] (3) Stabilization and solidification of Cr element

[0021] Add rare earth stabilizer and aromatic polyamine to the roasted product and heat to 70°C and then cool. The dosage of rare earth stabilizer, aromatic polyamine and roasted product are 1 part, 8 parts and 100 parts respectively according to the number of parts; After grinding and sieving, the obtained product is the raw material of ceramic or glass colo...

Embodiment 2

[0023] The method for preparing pottery glaze by utilizing high chromium waste liquid comprises the following steps:

[0024] (1) Pretreatment of chromium-containing waste

[0025] Precipitate and separate the high-chromium waste liquid, and dry the precipitate; grind the dried high-chromium waste liquid through a 200-mesh sieve, and finally make balls to obtain spherical raw materials;

[0026] (2)Cr 6+ Transformation and initial stabilization

[0027] Spherical raw materials are roasted, the roasting temperature is 750°C, and the roasting time is 7 hours;

[0028] (3) Stabilization and solidification of Cr element

[0029] Add rare earth stabilizer and aromatic polyamine to the roasted product and heat to 70°C and then cool. The dosage of rare earth stabilizer, aromatic polyamine and roasted product are 3 parts, 5 parts and 100 parts respectively according to the number of parts; after cooling After grinding and sieving, the obtained product is the raw material of cerami...

Embodiment 3

[0031] The method for preparing pottery glaze by utilizing high chromium waste liquid comprises the following steps:

[0032] (1) Pretreatment of chromium-containing waste

[0033] Precipitate and separate the high-chromium waste liquid, and dry the precipitate; grind the dried high-chromium waste liquid through a 200-mesh sieve, and finally make balls to obtain spherical raw materials;

[0034] (2)Cr 6+ Transformation and initial stabilization

[0035] Spherical raw materials are roasted, the roasting temperature is 800°C, and the roasting time is 7 hours;

[0036] (3) Stabilization and solidification of Cr element

[0037] Add rare earth stabilizer and aromatic polyamine to the roasted product and heat to 70°C and then cool. The amount of rare earth stabilizer, aromatic polyamine and roasted product are 2 parts, 6 parts, and 100 parts respectively according to the number of parts; after cooling After grinding and sieving, the obtained product is the raw material of ceram...

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PUM

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Abstract

The invention relates to a waste recycling method, in particular to a method for preparing ceramic or glass color glaze with high chromium waste liquid. The method comprises the steps of carrying out precipitation separation on the high chromium waste liquid, drying, grinding, and sieving with a 200-mesh screen, carrying out ball making to form a spherical raw material for roasting, adding a rare-earth stabilizing agent and aromatic polyamine to a roasted product, heating to 70 DEG C, then cooling, grinding, and sieving to form a product as a raw material of ceramic or glass pigment. According to the method, oxidoreduction occurs in a roasting process to convert Cr6+ into Cr3+ to achieve detoxification; on the other hand, Cr elements are preliminarily stabilized into an oxide or form a composite oxide with other elements; the stable chromium-containing product serves as the ceramic or glass pigment; and the thermostability, covering power, opacity and dispersing performance of the pigment are improved.

Description

technical field [0001] The invention relates to a waste recycling method, in particular to a method for preparing pottery glass colored glaze by utilizing high chromium waste liquid. Background technique [0002] The seriousness of chromium waste resources to social harm and the defects of chromium slag comprehensive treatment technology urgently require the development and promotion of a comprehensive chromium waste treatment technology with technical content, strong innovation and universal promotion value. [0003] At the same time, my country is the largest producer of ceramics and glass in the world, and there is a huge demand for ceramic and glass pigments every year. Chromium salt is one of the important raw materials for ceramics and glass pigments. However, expensive chromium salts are mostly used in the production of ceramics and glass pigments at present, which greatly increases the production cost of ceramics and glass pigments. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/86
Inventor 郝小勇范盘华崔栋
Owner JIANGSU BAIFU TECH CO LTD