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湿法炼锌采用硫酸浸取原料中的锌,同时被溶解的硅称为可溶性硅,其量超过规定范围时就呈糊状硅胶,严重影响锌液的过滤。过去的分析方法流程长不大适用,经试验提出用8％硫酸浸取试样后,用氟硅酸钾法测定可溶二氧化硅的含量,方法准确快速,结果满意。主要试剂 0.1mol/L氢氧化钠标准溶液;硫酸[8％(/)];氯化亚锡溶液(6％);50％乙醇-
Zinc hydrometallurgy using sulfuric acid leaching of raw materials in the zinc, dissolved silicon is called soluble silicon, when the amount exceeds the prescribed range was a paste of silica gel, seriously affecting the zinc liquid filtration. The procedure of the past analysis method is not applicable for a long time. After the test is proposed to leach the sample with 8% sulfuric acid, the content of soluble silica is determined by potassium fluosilicate method, and the method is accurate and rapid with satisfactory results. The main reagent 0.1mol / L sodium hydroxide standard solution; sulfuric acid [8% (/)]; stannous chloride solution (6%); 50% ethanol -