FIELD: chemistry.
SUBSTANCE: method of obtaining iron-chrome-phosphate product includes dissolution of 60-80 g of cast iron chips and 160-210 g of iron oxide in 650-850 g of orthophosphoric acid of 85%-90% concentration, with carrying out heating to 90°C-100°C in case of reaction slowing down, after dissolution of cast iron chips and iron oxide obtained solution is cooled, 85-115 g of chrome oxide are added, and then obtained paste of iron-chrome-phosphate product is dried and milled. Fireproof composition contains mixture of obtained iron-chrome-phosphate product, mineral filling agent and water.
EFFECT: invention makes it possible to obtain iron-chrome-phosphate product, resistant to high temperatures, which adds properties of high adhesiveness, chemical resistant and fire resistance to fireproof compositions.
2 cl, 2 ex
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