REFRACTORY MASS Russian patent published in 2000 - IPC

FIELD: machine engineering, metallurgy. SUBSTANCE: invention relates to refractory mass for foundry production and production of refractory materials. Refractory mass has the following components, wt.-%: clay, 75-80; quartz-tourmaline waste, 20-25. Clay of the following composition is used, wt. -%: Al₂O₃, 16.02; SiO₂, 62.62; CaO, 0.48; FeO, 0.42; Fe₂O₃, 3.83; calcination loss, 8.11 and quartz-tourmaline waste of the following composition, wt. -%: Al₂O₃, 13.75; SiO₂, 61.15; Fe₂O₃, 5.00; FeO, 8.10; TiO₂, 0.68; CaO, 1.20; MgO, 3.30; Na₂O, 1.25; K₂O, 1.60; B₂O₃, 1.90; calcination loss, 2.02. Proposed refractory mass has low cost, caused availability of components. EFFECT: decreased cost for production of refractory materials, improved exploitation and physical-chemical indices. 1 tbl