| 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. |
