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Method for preparing architectural ceramic bricks by wet-casting molding of granite waste

A granite waste material, pouring molding technology, applied in the field of architectural ceramics, to achieve the effect of large dust, high economic benefits, and broad market prospects

Active Publication Date: 2014-10-08
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Utilizing carrageenan and Tianqing gum as the gelling agent in the field of wet casting in the field of building ceramics has no report

Method used

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  • Method for preparing architectural ceramic bricks by wet-casting molding of granite waste

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Experimental program
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Effect test

Embodiment 1

[0018] First, the granite waste is ball-milled, dried, and passed through a 200-mesh sieve for later use. Then, according to the following slurry formula, add carrageenan and Tianqing gum to the mixed slurry of granite waste, water, and low-molecular-weight sodium polyacrylate. After dosing, heat and stir at 80°C for 60 minutes, inject it into a metal mold, put it into a drying oven and dry it at 60°C for 70 minutes after cooling, and then demould and dry. The measured green strength is 1MPa and the green density is 1.1 g / cm 3 , after demolding and drying the green body trimmed and fired at 1140°C, the measured flexural strength of the material was 56MPa.

[0019] The slurry formula is: 50wt% granite waste, 50wt% water, 1.0wt% carrageenan, 0.2wt% Tianqing gum, and 0.5wt% low molecular weight sodium polyacrylate.

Embodiment 2

[0021] First, the granite waste is ball-milled, dried, and passed through a 200-mesh sieve for later use. Then, according to the following slurry formula, add carrageenan and Tianqing gum to the mixed slurry of granite waste, water, and low-molecular-weight sodium polyacrylate. After dosing, heat and stir at 70°C for 65 minutes, pour it into a metal mold, put it in a drying oven at 50°C and dry for 80 minutes after cooling, and then demould and dry. The measured green strength is 1.2MPa and green density is 1.4g / cm 3 , after demoulding and drying the green body trimmed and fired at 1160°C, the measured flexural strength of the material was 60MPa.

[0022] The slurry formula is: 55wt% granite waste, 45wt% water, 1.3wt% carrageenan, 0.2wt% Tianqing gum, and 1wt% low molecular weight sodium polyacrylate.

Embodiment 3

[0024] First, the granite waste is ball-milled, dried, and passed through a 200-mesh sieve for later use. Then, according to the following slurry formula, add carrageenan and Tianqing gum to the mixed slurry of granite waste, water, and low-molecular-weight sodium polyacrylate. After dosing, heat and stir at 70°C for 70 minutes, inject it into a metal mold, put it in a drying oven and dry it at 70°C for 60 minutes after cooling, and then demould and dry. The measured green strength is 1.9MPa and green density is 1.6g / cm 3 , after demoulding and drying the green body trimmed and fired at 1180°C, the measured flexural strength of the material was 65MPa.

[0025] The slurry formula is: 60wt% granite waste, 40wt% water, 1.4wt% carrageenan, 0.4wt% Tianqing gum, and 1.5wt% low molecular weight sodium polyacrylate.

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Abstract

The invention relates to a method for preparing architectural ceramic bricks by wet-casting molding of granite waste wet. The method comprises the following steps: by taking granite wastes as main raw materials, by taking water as a dispersing medium, by taking carrageenan, sesbania glue and low polymer sodium polyacrylate as additives, mixing to obtain slurry; preparing architectural ceramic bricks by adopting a wet-casting molding process, drying and fettling, firing at the temperature of 1140-1180 DEG C, and cooling to obtain the architectural ceramic bricks with the breaking strength of 50-70MPa. The method is simple in preparation process; compared with the traditional architectural ceramic dry pressing process at present, the method has the advantages that large tonnage press and spray material preparation are saved, dust and noise pollution are reduced, the production cost is low, hard brittle materials serve as main raw materials, the problem that clay and other traditional high-quality ceramic raw materials are increasingly scarce is relieved, and the problem that a green ceramic body molded by using the hard brittle materials is low in strength is solved. Moreover, compared with similar architectural ceramics, the architectural ceramic bricks are low in price, and higher economic benefits can be brought.

Description

technical field [0001] The invention belongs to the field of building ceramics, and in particular relates to a method for preparing building ceramic bricks by wet casting of granite waste. Background technique [0002] With the continuous development of the national economy and the continuous advancement of new urbanization, the scale of the architectural ceramics industry will further expand in the future. As an industry with high resource consumption and high energy consumption, architectural ceramics has a great demand for raw materials, while traditional high-quality ceramic raw materials The mineable amount of clay is less and less, and the problem of resource shortage is becoming more and more serious. [0003] my country is a major country with large granite resources and production in the world. According to the incomplete statistics of the "96 China Mineral Resources Report", the total amount of granite mineral resources in China is about 23 billion to 24 billion c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/16C04B35/622
Inventor 顾幸勇吴剑峰罗婷董伟霞
Owner JINGDEZHEN CERAMIC INSTITUTE
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