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Method for preparing synthesized bone meal for producing bone-china

A technology for synthesizing bone and bone china, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems affecting the dielectric properties and chemical stability of ceramic products, affecting the color after firing, etc., to achieve excellent performance, Effect of small environmental load and stable composition

Inactive Publication Date: 2014-03-19
张垠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iron impurities not only affect the color of ceramic products after firing, but also seriously affect the dielectric properties and chemical stability of ceramic products

Method used

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  • Method for preparing synthesized bone meal for producing bone-china
  • Method for preparing synthesized bone meal for producing bone-china

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Preparation of bone meal precursor

[0026] Calcium hydrogen phosphate (CaHPO 4 2H 2 O) 100.0mol and calcium carbonate (CaCO 3 ) 50.0mol and 22.2Kg of pure water (wherein the ratio of adding water is 100%) join in the ball mill of 100Kg, add the alumina ball stirring bar of 44.5kg at the same time, the size of alumina ball is 15, 30, 45mm, (large, medium and small oxide Aluminum ball ratio is 1: 1: 1), in order to remove impurities such as iron and bleaching in the mixed solution, add 1.0% sodium hypochlorite and 1.5% sodium dithionite respectively, wet pulverize at room temperature for 12 hours, machine speed is 60rmp.

[0027] Step 2: Preparation of Synthetic Bone Meal

[0028] The obtained white emulsion was deironed by physical method and washed 3 times; then it was placed in the natural environment for 4 days to precipitate, and then the supernatant was removed, and the obtained precipitate was dried in a desiccator at 60°C for 5 days.

[0029] The drie...

Embodiment 2

[0031] Step 1: Preparation of bone meal precursor

[0032] Calcium hydrogen phosphate (CaHPO 4 2H 2 O) 30.0mol and calcium carbonate (CaCO 3 ) 20.0mol and 10.7Kg pure water (wherein the ratio of adding water is 150%) join in the ball mill of 50Kg, add the alumina ball stirring bar of 14kg at the same time, the size of alumina ball is 20, 40, 60mm, (large, medium and small alumina Ball ratio is 1: 1: 1), in order to remove impurities such as iron and bleaching in the mixed solution, add 2.0% sodium hypochlorite and 1.5% sodium dithionite respectively, wet pulverize at room temperature for 18 hours, machine speed is 50rmp.

[0033] Step 2: Preparation of Synthetic Bone Meal

[0034] The obtained white emulsion was deironed by physical method and washed 3 times; then it was placed in the natural environment for 3 days to precipitate, and then the supernatant was removed, and the obtained precipitate was dried in a dryer at 70°C for 4 days.

[0035] The dried product is calcin...

Embodiment 3

[0037] Step 1: Preparation of bone meal precursor

[0038] Calcium hydrogen phosphate (CaHPO 4 2H 2 O) 25.0mol and calcium carbonate (CaCO 3 ) 15.0mol and 5.8Kg of pure water (wherein the ratio of adding water is 100%) join in the ball mill of 30Kg, add the stirring bar of 11.6kg alumina ball at the same time, the size of alumina ball is 10, 20, 30mm, (large, medium and small oxide Aluminum ball ratio is 1: 1: 1), in order to remove impurities such as iron and bleaching in the mixed solution, add 2.0% sodium hypochlorite and 2.0% sodium dithionite respectively, wet pulverize at room temperature for 24 hours, machine speed is 40rmp.

[0039] Step 2: Preparation of Synthetic Bone Meal

[0040] The obtained white emulsion was iron-removed by physical method and washed three times; then it was placed in the natural environment for 5 days to precipitate, and then the supernatant was removed, and the obtained precipitate was placed in the natural environment to dry.

[0041] The...

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Abstract

The invention relates to a method for preparing synthesized bone meal for producing bone-china. The method is characterized in that natural minerals calcium carbonate and calcium hydrophosphate are taken as initial raw materials, and granulous micro born meal with the particle size of 3-5 mu m is synthesized according to an apatite formation mechanism by using a wet crushing method. The method is characterized by comprising the following steps: adding calcium carbonate (CaHPO4.2H2O) and calcium hydrophosphate (CaCO3) with a Ca / P mole ratio of (3:2)-(5:3) and 50-300% of pure water into a ball mill, and crushing for 12-24 hours by using a wet method at room temperature; deironing, washing, precipitating and drying the obtained white emulsion; calcining the dried material for 1-3 hours at a high temperature of 1,050-1,250 DEG C so as to obtain the synthesized bone meal for producing bone-china. The synthesized bone meal which is applicable to bone-china production is successively developed by using an artificial synthesis method, the ratio of Ca to P is 1.5-1.67, the principal crystalline phase is calcium-free type hydroxyl calcium phosphate, the content is greater than 99%, components are stable, and the synthesized bone meal is an ideal substitute product of the conventional bone-china main body raw material, namely, animal bone meal, the property is superior to that of the animal bone meal, and the environment burden is small.

Description

technical field [0001] The invention relates to a method for preparing synthetic bone powder for producing bone china, which belongs to the technical field of daily-use ceramics and is mainly used for the production of high-grade bone china. Background technique [0002] Bone China is an internationally recognized high-grade daily-use fine porcelain, which has excellent characteristics such as fine porcelain, high whiteness, transparency, smooth glaze, and high mechanical strength. Its price is 5-10 times that of ordinary fine porcelain, but it is very popular among customers in the international market. Bone meal is the main raw material of bone china, and the dosage can reach 40% to 50% of the whole billet. The quality and dosage of bone meal have a great influence on the color tone, transparency, firing temperature and strength of bone china products. Traditional bone china generally uses animal bone meal as raw material. Due to the difficulty in supplying animal ashes, ...

Claims

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Application Information

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IPC IPC(8): C01B25/32C04B35/447
Inventor 张垠
Owner 张垠
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