METHOD FOR PRODUCTION OF CERAMIC PRODUCTS Russian patent published in 2009 - IPC C04B35/16 

FIELD: construction.

SUBSTANCE: method for production of ceramic products includes preparation of moulding mass from main group rocks as filler and binder, moulding of products from prepared moulding mass and their thermal treatment. Binder is produced by mixing of 80÷95 wt % of filler from main group rocks with particle size 50÷500 mcm and humidity of not more than 5% with 5÷20 wt % of phosphoric acid with density of 1.50÷1.85 g/cm³. Moulding mass is prepared by soaking of prepared mixture at temperature of 10÷30°C for 24÷72 hours, and thermal treatment is carried out at temperature of 100÷300°C. It is reasonable to mold products by means of hot pressing with force from 10 to 500 kg/cm². Mixing of filler and phosphoric acid is carried out for 30÷90 minutes.

EFFECT: simplification of technology to expand raw materials base and assortment of produced products; performance of thermal treatment process at considerably lower temperatures makes it possible to use inexpensive process equipment with the possibility to use secondary heat, which creates economically less expansive technology for production of ceramic products.

3 cl, 1 tbl, 4 ex