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前言磷矿粉自动加料,是我院第一试验厂半水——二水法磷酸中间试验的配套项目。由于计量精度会影响石膏结晶性质,在湿法磷酸的生产过程中,必须严格控制磷矿粉的加入量,这就要求在半水——二水法磷酸中间试验过程中首先要控制加入半水槽的磷矿粉保持恒量,并调节硫酸加入量,来控制反应槽中的硫酸根浓度。为此我们在七四年承担了研制磷矿粉自动
Preface Phosphate rock powder automatic feeding, is the first pilot plant in our hospital semi-water - two water intermediate test method of phosphate matching projects. As the measurement accuracy will affect the gypsum crystalline nature, in the production of wet-process phosphoric acid, we must strictly control the amount of phosphate rock powder added, which requires half-water in the middle of the trial process of phosphoric acid must first control the addition of semi-sink Of phosphate rock to maintain a constant amount, and adjust the amount of sulfuric acid added to control the concentration of sulfate in the reaction tank. To this end, we undertook the development of phosphate rock powder in 1974