PHOSPHATE BINDER FOR PREPARING REFRACTORY COMPOSITIONS Russian patent published in 1999 - IPC

FIELD: manufacture of refractory materials, more particularly slag-steel-and cast iron-resistant compositions for repair of steel making ladles, refractory linings of furnace units, and preparation and repair of heat-insulating concretes. SUBSTANCE: phosphate binder comprises titanium dioxide, phosphoric acid and additives, namely boron-and magnesium containing components, ratios of components with respect to titanium dioxide in amount of 10 wt parts being as follows: phosphoric acid, 20-70; boron-containing additive in terms of boric acid 0.5-2; magnesium-containing additive in 2 terms of magnesium oxide, 1.5-4.5. Composition also includes chromium; aluminium-and zirconium-containing components calculated as oxides thereof, 4-10 wt parts of each. In order to obtain refractory composition, 3-10% of phosphate binder are mixed with filler. EFFECT: improved properties of the phosphate binder. 4 cl, 1 tbl