Method for preparing calcium silicate board from ceramic polishing waste

A technology of ceramic polishing waste and calcium silicate board, which is applied in the field of material science, can solve the problems of asbestos fiber not meeting environmental protection requirements, high mineral raw material prices, and long-term use exhaustion, and achieve low cost, good product performance, and reduced consumption. Effect

Inactive Publication Date: 2011-06-08
LIAONING SILICATE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used calcium silicate board is mainly made of a large amount of raw minerals, quartz, quicklime, asbestos fiber and other materials. The price of mineral raw materials is relatively high, and the long-term use may be exhausted. A large amount of asbestos fiber is not suitable for environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] a. Diatomite, lime, ceramic polishing waste and water are weighed according to the following formula: 50g of diatomite, 30g of ceramic polishing waste, 40g of quicklime, and 60ml of water. Stir the weighed material evenly until the average particle size of the slurry is 10 microns, then add 1 g of cellulose fiber and 0.5 g of pulp and continue stirring for 5 minutes, and pour it into a beaker after stirring evenly.

[0017] b. The stirred material will be put into a vacuum filtration device for suction filtration, and the material will be taken out after natural dehydration and vacuum filtration dehydration.

[0018] c. Put the taken-out material into a designed abrasive tool and press it into shape. The water content of the pressed sample is 31%.

[0019] d. The pressed samples were left for 6 hours and then placed in a reactor for hydrothermal synthesis reaction. The temperature of the reactor was 165° C., the pressure was 0.7 Mpa, and the pressure was maintained for ...

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Abstract

The invention discloses a method for preparing a calcium silicate board from ceramic polishing waste, which comprises the following steps of: uniformly mixing raw materials such as the ceramic polishing waste, diatomite, quick lime and the like according to a proportion, performing vacuum pressure filtration forming, and synthesizing a calcium silicate board product under the high-temperature high-pressure hydrothermal condition, wherein steam distillation is performed at the constant temperature of between 165 and 200 DEG C for 10 to 24 hours, and steam pressure is 0.6 to 1.2MPa. A large amount of ceramic polishing waste is recycled. The calcium silicate board product prepared by the method has the advantages of saving soil and energy, protecting environment, utilizing the waste and the like, and has obvious economic benefit and social benefit.

Description

technical field [0001] The invention relates to a method for preparing materials, in particular to a method for preparing calcium silicate boards from ceramic polishing waste, which belongs to the field of material science. Background technique [0002] With the rapid development of the building ceramics industry, the amount of ceramic waste, especially polished tile waste, is increasing. According to statistics, the annual production of polished tile waste in the country is estimated to be about 5 million tons (the total amount of ceramic waste is expected to be 10 million tons). , Such a large amount of ceramic waste can no longer be solved by simple landfill methods. At the same time, a large amount of accumulated ceramic waste occupies land and causes serious pollution to the environment such as water, air and soil. How to process or reuse these waste materials has become a common concern of ceramic manufacturers and environmental protection departments. [0003] Calciu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02
CPCC04B30/02Y02W30/91C04B14/08C04B18/165C04B18/24C04B22/064C04B24/383C04B40/0057C04B40/0071C04B40/024
Inventor 肖飞韩绍娟许壮志薛健张明张浩智
Owner LIAONING SILICATE RES INST
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