COMPOSITION FOR MAKING HIGH-TEMPERATURE FOAM-CERAMIC MATERIAL Russian patent published in 2009 - IPC C04B38/02 

FIELD: chemistry.

SUBSTANCE: present invention pertains to structural materials and mainly to making heat resistant ceramic materials, intended for use in industrial construction for heat insulating manufacturing equipment, used at high temperatures (including in a vacuum), as well as in conditions of direct contact with naked flame of gas burners, furnaces etc. The composition for making heat resistant ceramic material contains phosphate binding substance, clay raw materials, foaming agent, modifying additives and water, with the following ratio of components in wt %: clay raw materials 8.0-40.0; phosphate binding substance 20.0-48.0; foaming agent 0.1-0.35; modifying additives 0.24-40.0; water 0-5.0. The clay raw materials, in wt %, used are: fine ground clay "ПГСОА" 8.0-20.0 and/or chamotte-mortar 0-20.0 and/or chrome-mortar 0-11.0; phosphate binding substance - orthophosphoric acid and/or aluminoboronphosphate binder 0-48.0; foaming agent - "ПАП" type aluminium powder 0-0.35; modifying additives: high-alumina cement 0-12.0; Fe₃O₄ - 0-6.0; corundum 0-22.4; calcium oxide 0-1.7; aluminium hydroxide 0-0.1; soot 0-4.0.

EFFECT: lower sintering temperature and water absorption, increased strength and thermal stability of the product.

2 cl, 2 tbl