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Method for preparing black cobalt-based ceramic pigment by utilizing tannery sludge

A technology of black ceramic pigment and tannery sludge, which is applied in the production, application, household appliances and other directions of ceramic materials, can solve problems such as mass production and application limitations, achieve significant economic and social benefits, reduce costs, and reduce the cost of The effect of increasing the degree of

Pending Publication Date: 2020-08-07
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, crystal coloring is used to prepare black pigments: chromium, iron, manganese, nickel, copper, cobalt and other metal oxides form isomorphic mixed spinel crystals. Although this black pigment and glaze are not affected by the firing atmosphere, However, with the soaring price of oxides, the mass production and application of this black material are limited

Method used

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  • Method for preparing black cobalt-based ceramic pigment by utilizing tannery sludge

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example 1

[0012] A method for preparing cobalt-based black ceramic pigments from tannery sludge, which uses tannery sludge to completely replace chromium oxide, and its weight percentage composition is: 40% of tannery sludge, 30% of iron oxide red, 5% of nickel oxide % and cobalt oxide 25%; the tannery sludge is calcined (the calcining temperature is 1040°C in a non-oxidizing atmosphere) and ball-milled to a fineness of 300 mesh for later use, and then mixed with other components, calcined, and sieved ( 300 mesh) to obtain the product, wherein the calcination temperature is 1300 ° C, and the heat preservation is 120min.

[0013] Add 5% of the above black colorant to commercial lead-based frit, add 1% carboxymethyl cellulose, and wet grind to obtain a ceramic glaze. The glaze is applied to the ceramic sample plate, calcined at a high temperature of 1200 ° C, and kept for 30 minutes.

example 2

[0015] A method for preparing cobalt-based black ceramic pigments from tannery sludge, which uses tannery sludge to completely replace chromium oxide, and its weight percentage composition is: 45% of tannery sludge, 30% of iron oxide red, and 5% of nickel oxide % and cobalt oxide 20%; the tannery sludge is calcined (the calcining temperature is 1040°C in a non-oxidizing atmosphere) and ball-milled to a fineness of 300 mesh for later use, and then mixed with other components, calcined, and sieved ( 300 mesh) to obtain the product, wherein the calcination temperature is 1300 ° C, and the heat preservation is 120min.

[0016] Add 5% of the above black colorant to commercial lead-based frit, add 1% carboxymethyl cellulose, and wet grind to obtain a ceramic glaze. The glaze is applied to the ceramic sample plate, calcined at a high temperature of 1200 ° C, and kept for 30 minutes.

example 3

[0018] A method for preparing cobalt-based black ceramic pigments from tannery sludge, which uses tannery sludge to completely replace chromium oxide, and its weight percentage composition is: 55% of tannery sludge, 25% of iron oxide red, and 5% of nickel oxide % and cobalt oxide 15%; the tannery sludge is calcined (the calcining temperature is 1040°C in a non-oxidizing atmosphere) and ball-milled to a fineness of 300 mesh for later use, and then mixed with other components, calcined, and sieved ( 300 mesh) to obtain the product, wherein the calcination temperature is 1300 ° C, and the heat preservation is 120min.

[0019] Add 5% of the above black colorant to commercial lead-based frit, add 1% carboxymethyl cellulose, and wet grind to obtain a ceramic glaze. The glaze is applied to the ceramic sample plate, calcined at a high temperature of 1200 ° C, and kept for 30 minutes. Example 4

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Abstract

The invention discloses a method for preparing cobalt-based black ceramic pigment by utilizing tannery sludge. Leather industrial waste is employed and comprises the following components, by weight: 40-60% of tannery sludge, 20-30% of iron oxide red, 5% of nickel oxide and 15-20% of cobalt oxide. The tannery sludge is calcined and sieved in a non-oxidizing atmosphere for later use, and then the processed tannery sludge and other components are blended, mixed, calcined and crushed to obtain a product. The invention also discloses black ceramic pigment prepared by the preparation method. The method can be used for preparing the ceramic pigment for the black glaze, wherein the pigment is high in blackness, pure in color and stable.

Description

technical field [0001] The invention relates to a production method of a cobalt-based black ceramic pigment capable of reducing production costs, and belongs to the technical field of ceramic pigment preparation. Background technique [0002] Black ceramic pigment is a very important pigment in decorative materials. Black glaze is favored by people for its pure and dignified decorative effect, and is even regarded as a treasure by high-end decorators. Generally, crystal coloring is used to prepare black pigments: chromium, iron, manganese, nickel, copper, cobalt and other metal oxides form isomorphic mixed spinel crystals. Although this black pigment and glaze are not affected by the firing atmosphere, However, with the soaring price of oxides, the mass production and application of this black material are limited. Therefore, using industrial waste residues to reduce the production cost of black ceramic pigments has become a market demand. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/13C03C8/10C04B41/86C09C1/00
CPCC03C8/10C04B33/13C04B33/131C04B33/1321C04B41/5022C04B41/86C04B2235/3272C04B2235/3275C04B2235/3279C09C1/0009Y02P40/60
Inventor 杜毅何波
Owner QILU UNIV OF TECH
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