Leadless bone porcelain and method for preparing same

A technology of applying lead-free bone and bone quality to the field of lead-free bone china and its preparation can solve the problems of poor plasticity of lead-free bone china and high cost of high-grade bone china, and improve product grade and quality , improve the overall technical level, and solve the effect of environmental pollution

Inactive Publication Date: 2009-01-07
SHANXI MINGHE CERAMIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the problems of high cost in producing high-grade bone china from southern raw materials, poor plasticity and bonding performance of lead-free bone china produced from northern raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A lead-free bone ceramic material is composed of the following raw materials: 25 parts of bovine bone carbon, 5 parts of pig bone carbon, 30 parts of Datong sandstone, 5 parts of quartz, 13 parts of feldspar, 10 parts of kaolin, cooked 8 parts of kaolin, 5 parts of bentonite.

[0021] A preparation method of lead-free bone ceramic:

[0022] a. Manually select the lead-free bone ceramic materials. The hard materials are manually hammered, roughly crushed and vibrated to screen the materials, and then enter the wet wheel mill together with the soft materials. Among them, the bovine bone charcoal and pig bone charcoal are calcined and ball milled, and the bone The degree of pulp grinding is controlled at: 500 mg, specific gravity 1.77, the bone pulp passes through the sieve with 4.5 holes, and the crushed slurry is filtered and stirred before entering the machine for fine crushing. , mud, and then add oxalic acid and phosphoric acid to the mud to remove alkali, which can ...

Embodiment 2

[0029] A lead-free bone ceramic material is composed of the following raw materials: 30 parts of bovine bone carbon, 10 parts of pig bone carbon, 25 parts of Datong sandstone, 10 parts of quartz, 18 parts of feldspar, 7 parts of kaolin, cooked 6 parts of kaolin, 4 parts of bentonite.

[0030] A preparation method of lead-free bone ceramic:

[0031] a. Manually select the lead-free bone ceramic materials. The hard materials are manually hammered, roughly crushed and vibrated to screen the materials, and then enter the wet wheel mill together with the soft materials. Among them, the bovine bone charcoal and pig bone charcoal are calcined and ball milled, and the bone The grinding degree of the slurry is controlled at: 500 mg, the specific gravity is 1.75, and the bone pulp passes through the 10,000-hole sieve with a surplus of 1.5. The crushed slurry is filtered and stirred before entering the machine for fine crushing. , mud, and then add oxalic acid and phosphoric acid to the...

Embodiment 3

[0038] A lead-free bone ceramic material is composed of the following raw materials: 28 parts of bovine bone carbon, 8 parts of pig bone carbon, 26 parts of Datong sandstone, 8 parts of quartz, 15 parts of feldspar, 9 parts of kaolin, cooked 7 parts of kaolin, 4.5 parts of bentonite.

[0039] A preparation method of lead-free bone ceramic:

[0040]a. Manually select the lead-free bone ceramic materials. The hard materials are manually hammered, roughly crushed and vibrated to screen the materials, and then enter the wet wheel mill together with the soft materials. Among them, the bovine bone charcoal and pig bone charcoal are calcined and ball milled, and the bone The degree of pulp grinding is controlled at: 500 mg, specific gravity 1.78, the bone pulp passes through the sieve with 10,000 holes, and the remainder is 7.5. The crushed slurry is filtered and stirred before entering the machine for fine crushing. , mud, and then add oxalic acid and phosphoric acid to the mud to ...

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Abstract

The invention discloses leadless bone china and a preparation method thereof. The leadless bone china consists of cattle bone coal, pig bone coal, sandstone in Datong, quartz, feldspar, kaolin, calcined kaolin, and bentonite. The preparation method is as follows: leadless bone china is sorted manually, pulverized and processed; b. calcining, ball milling and alkaline cleaning process equipment and process are adopted for the bone coal; c. wet process is adopted for preparing semi-finished china and glaze; d. roll forming process and chain-type dryness are adopted for flat products and products in regular shape; e. high temperature biscuit firing with natural gas and medium and low temperature glaze firing are adopted; f. machine and manual spraying glazing are adopted for glazing; g. a roller hearth furnace is adopted for enamel firing in the environment of natural gases. The leadless bone china is primarily prepared with sandstone in Datong; the molding ratio of the product is as high as 96 percent; the product is transparent, light, fine and hard; the china is harder, whiter and more transparent than the ordinary china.

Description

Technical field: [0001] The invention belongs to a ceramic material and a production process thereof, in particular to a lead-free bone china and a preparation method thereof. Background technique: [0002] Bone China is one of the high-grade porcelain recognized at home and abroad. Britain is the earliest country to develop and produce bone china, with a history of 200 years. There are still Japan, France, the former Soviet Union, the United States and other countries producing in the world, but because of the rapid increase in the cost of raw materials, labor, and electricity, the production of ceramics has gradually shifted to developing countries. my country's bone china production originated from small batch production in the early 1970s, and the current output is less than 50 million pieces, accounting for only 1 / 40 of ordinary porcelain, while the production of ordinary porcelain has exceeded 2 billion pieces and has reached saturation. At present, various domestic ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/00C04B35/14C04B35/622C04B41/86
Inventor 贾培录樊学民李广智尹式平贾培利胡金保杨慧贾玉宁戴巨
Owner SHANXI MINGHE CERAMIC
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