A Method of Producing Castable Masses from Non-plastic Substances.

摘要

12,535. Weber, E. June 23, 1909, [Convention date]. Plastic compositions. - Castable masses are produced from powdered non-plastic substances, such as quartz, carborundum, steatite, magnesite, zinc oxide, sulphur, graphite, and metals by adding a small quantity of alkali-from 0À05 to 0À2 per cent-and a little water, with or without the addition of humus or carbonaceous substances of high molecular weight, such as humic acid, grape sugar, gum, brown coal, and turf, in small quantities such as from 0À05 to 0À2 per cent. Barium and lead salt solutions may also be added to precipitate soluble sulphates, and the masses may be hardened by an addition of acids or salts. The powdered materials may be in different states of division.