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Improvements relating to the production of magnesium basic carbonate, or magnesia

机译:与碱式碳酸镁或氧化镁生产相关的改进

摘要

544,907. Magnesium carbonates and oxide. OCEAN SALTS (PRODUCTS), Ltd., PRYTHERCH, W. E., ANDERSON, J. H., and ADAMS, B. A. Feb. 24, 1941, No. 2485. [Class 1 (iii)] Basic magnesium carbonate, from which magnesia is obtained by calcination, is prepared from dolomite or dolomite limestone with the aid of seawater or other solution containing magnesium salts. An aqueous suspension of calcined dolomite is carbonated to yield a solution of magnesium bicarbonate which is filtered to separate calcium carbonate &c. A further portion of the suspension is treated with seawater to yield a precipitate of magnesium hydroxide which is added to the bicarbonate solution to form a basic magnesium carbonate. The dolomite is preferably calcined at a temperature which decomposes only the magnesium carbonate. Specification 543,665, is referred to.
机译:544,907。碳酸镁和氧化物。海洋盐(产品)有限公司,BA,PRYTHERCH,WE,ANDERSON,JH和ADAMS,1941年2月24日,编号2485。[1(iii)类]碱式碳酸镁,可通过煅烧从中得到氧化镁,由白云石或白云石石灰石借助海水或其他含镁盐的溶液制得。将煅烧的白云石的水悬浮液碳酸化,得到碳酸氢镁溶液,将其过滤以分离碳酸钙&c。另一部分悬浮液用海水处理,得到氢氧化镁沉淀,将其加入碳酸氢盐溶液中形成碱性碳酸镁。白云石优选在仅分解碳酸镁的温度下煅烧。参见规范543,665。

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