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国内外药用硫酸钡的生产工艺路线基本上不外三条:即氯化钡分别和硫酸钠、硫酸、硫酸铵反应而得。我厂经过研究,最后采用氯化钡和硫酸钠反应这条路线。其优点是成品质量好、疏松度高、原料成本低,对设备没有特殊要求。工艺过程:用含有98%以上的氯化钡加按重量比10倍的水,加热溶解,过滤。取滤液,用盐酸调 pH值至2～3,加次氯酸钠适量,加热反应除硫化物,合格后静置8小时以上,过滤、除滤渣,得甲液。另用含有98%以上的硫酸钠加按重量比10倍的水,加热
At home and abroad, the production of medicinal barium sulfate process basically nothing more than three: the barium chloride and sodium sulfate, respectively, sulfuric acid, ammonium sulfate derived reaction. I plant after research, the last barium chloride and sodium sulfate reaction of this route. The advantage is the finished product of good quality, high porosity, low cost of raw materials, no special equipment requirements. Process: containing more than 98% of barium chloride plus 10 times by weight of water, heated to dissolve, filtered. Take the filtrate, with hydrochloric acid to adjust the pH to 2 to 3, plus sodium hypochlorite amount, the reaction was heated to remove sulfides, after standing for more than 8 hours, filtered, in addition to residue, was A liquid. Another with more than 98% sodium sulfate plus 10 times by weight of water, heating