METHOD OF MANUFACTURING OF REFRACTORY PRODUCTS OF CHROME OXIDE Russian patent published in 2009 - IPC C04B35/12 

FIELD: construction.

SUBSTANCE: method of manufacturing of products presupposes preliminary fabrication of briquettes of charge material on dry bases containing 96 wt% of chrome oxide and 4 wt % of titanium oxide. In the course of manufacturing of briquettes orthophosphoric acid is loaded into the charge material as a binding agent. Briquettes are burnt at temperature range of 600-1000°C; cut fractions of filler are produced and loaded into the preliminary fabricated fine mixture of chrome oxide, titanium oxide humidified with orthophosphoric acid up to 4-12 wt %, over 100% of the total quantity of powdery components. Molding sand is received by blending and homogenising with the fraction content, wt %: fraction 0.5-2 mm; fraction <0.5mm - 20; fine mixture <0.005mm - 30; half - finished product is molded, dried and burnt in temperature range of 1500±50°C.

EFFECT: improved quality of refractory bricks.

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