This delay the gelling of a suspension of melangeur of bicarbonate, sodium carbonate and sodium silicate, suspensions thus obtained and applied to the manufacture of materials in the form of beads

摘要

Gelation and setting of desirably miscible and pumpable crutcher slurries of sodium carbonate, sodium bicarbonate and sodium silicate in an aqueous medium are prevented by addition to such medium of a small proportion of citric acid and/or water soluble citrate. The addition of the particular gelation preventive material lengthens the workable crutching time to up to four hours, from times as little as a minute or less.