Inorganic green body reinforcing agent based on silicate system

Abstract

The invention discloses an inorganic green body reinforcing agent based on a silicate system. The inorganic green body reinforcing agent comprises the following components in parts by weight: 1-3 parts of inorganic nano oxide powder, 1-5 parts of sodium sulfate, 1-5 parts of aluminum sulfate, 1-5 parts of sodium pyrophosphate, 5-15 parts of sodium silicate, 0.1-1 part of sodium fluosilicate, and 0.1-1 part of magnesium lithium silicate. The reinforcing agent disclosed by the invention is prepared by compounding inorganic nano oxide powder and inorganic salt. Most materials are easily dissolvedin water and have good dispersivity. Sodium silicate, magnesium lithium silicate and other substances have good exchangeability with cations, so that the clay has good plasticity. After the reinforcing agent is sintered, all the materials can be converted into corresponding oxides and other substances, and the strength of a ceramic green body can be greatly enhanced under the condition that the mud performance is not affected.

Description

technical field [0001] The invention relates to the technical field of ceramic industry, in particular to a silicate system-based inorganic body reinforcing agent. Background technique [0002] In the production of the ceramic industry, the dry strength of the green body is an important indicator, which has an important impact on the product rate and quality of the product. As a reinforcing agent for the green body, it should be able to greatly enhance the performance of the green body without affecting the performance of the green body. Increase the strength of the dry billet, improve the fluidity of the powder, and improve the combination of the powder. Body enhancers can be divided into organic tile body enhancers, such as PVA (polyvinyl alcohol), CMC (carboxymethyl cellulose), modified starch, sodium polyacrylate, modified polysaccharide, polyacrylate, wood Factors, etc.; inorganic ceramic tile body reinforcement, such as water glass, phosphate, bentonite, sodium humate...

AI Technical Summary

Problems solved by technology

[0003]Most of the green body reinforcing agents used in the prior art contain high-molecular organic substances. Poor, when the amount added is large, the fluidity of the mud will become worse, and it is necessary to add a decoagulant to reduce the viscosity of the mud and reduce the moisture content of the mud, so as to reduce the moisture content of the dry mud in the spray tower granulation process and the fuel consumed

At present, the organic reinforcing agent used still has the following problems. For example, CMC has strong water retention and is difficult to dissolve in water. It needs to use ethylene glycol as a medium to dissolve in water. Excessive amount will cause mud fluidity Deterioration will affect the subsequent production of mud, such as spray granulation, drying and other processes

Excessive use of lignin-based reinforcing agents will lead to excessive loss on ignition of the green body, and it is difficult to completely oxidize the green body during the oxidation and firing stage. In this way, the residual organic matter will continue to oxidize after the glaze is melted, so that there will be gas to continue to be discharged , resulting in a large number of bubbles or pinholes and other defects on the surface of the tile

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