| 摘要 |
PCT No. PCT/EP95/05175 Sec. 371 Date Sep. 12, 1997 Sec. 102(e) Date Sep. 12, 1997 PCT Filed Dec. 22, 1995 PCT Pub. No. WO96/21620 PCT Pub. Date Jul. 18, 1996Process for the coproduction of calcium carbonate and sodium hydroxide, comprising causticizing sodium carbonate with milk of lime; separating the calcium carbonate and the sodium hydroxide formed in the causticizing stage; and carbonating a mixture of milk of lime and of the calcium carbonate resulting from the causticizing stage. |
