This paper about the technics is to use the material of haloid liquid, ammonium bicarbonate and ammonia to preparate the super light MgO.
本研究所述的工艺是采用卤水、碳酸氢铵和氨水为原料，生产特级轻质氧化镁的方法。
Ammonium sulphate with calcium carbonate as gross by-product could be obtained from the raw materials including phosphogypsum, ammonium bicarbonate and ammonia water.
以磷石膏、碳酸氢铵和氨水为原料制备硫酸铵，并用盐酸处理碳酸钙粗品制备氯化钙。
The key technique is a 3 step addition of zinc powder for removing impurities and mixed employment of ammonia and ammonium bicarbonate.
三段控温添加锌粉除杂以及氨水与碳酸氢铵复配作为沉淀剂是技术关键。
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