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碳酸鎂是一种白色的粉末,質甚輕,为結晶性和非結晶性的混合物。在工业上可以用它作絕緣料和葯品,幷且可以用为制造其他鎂盐、鎂墨、橡胶、假漆、高級玻璃、石綿砖和化妆品等物的原料。我們曾調查一个用海水制造碳酸鎂的厂子。茲将我們发現的职业病和我們建議的預防方法,述之于下。生产过程 1.燒炼熟石灰:取石灰石和焦炭(10:1)交替分层装入石灰窰內,然后燃燒。同时将产生的二氧化碳通清洗机洗去二氧化硫(SO_2)和尘土,儲在蓄气器內备用。 2.制造氢氧化鎂:从海內将海水吸入池內,經細沙过滤,去其杂物,再抽入化合筒內,利用海水內的氯化鎂和熟石灰的化合,制成氢氧化鎂〔Mg(OH)_2〕。 3.制造碳酸鎂:将氢氧化鎂放在大池內沉淀,用水洗滌后再沉淀,利用馬达抽至吸收塔上,再用由
Magnesium carbonate is a white powder that is very light in quality and is a crystalline and amorphous mixture. It can be used as insulating material and medicine in industry, and can be used as raw material for making other magnesium salts, magnesium ink, rubber, artificial lacquer, advanced glass, asbestos bricks and cosmetics. We have investigated a factory that made magnesium carbonate from seawater. We will be found in the occupational disease and our proposed prevention methods, described below. Production process 1. Burning hydrated lime: Limestone and coke (10: 1) alternately layered into the lime kiln, and then burning. At the same time the resulting carbon dioxide through the washing machine to wash away the sulfur dioxide (SO2) and dust, stored in the accumulator spare. 2. Manufacture of magnesium hydroxide: sea water will be sucked into the pool from the sea, the fine sand filtration, to its debris, and then into the compound cylinder, the use of seawater within the magnesium chloride and hydrated lime, made of magnesium hydroxide [Mg ( OH) _2〕. 3. Manufacture of magnesium carbonate: The magnesium hydroxide on the pool precipitation, washed with water and then precipitated, the use of motor to the absorption tower, and then by