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本文研究了硅酸锌矿直接酸浸工艺中的主要技术关键及其解决途径。通过采用控制浸出终酸pH值1～2,温度45～80℃,时间1～2小时,锌离子浓度100～140克/升,SiO_2<15克/升,可以获得使溶解的SiO_2不发生胶凝作用,能降低浸出矿浆的粘度,固液分离顺利进行,锌浸出率>95％,过滤速度1.5～3米~3/米~2·小时的结果。在研究诸多因素中,酸度、溶液中硅酸及其电解质成份的离子浓度影响最大。
This paper studies the main technical key and solution to the direct acid leaching process of zinc silicate ore. By controlling leaching of the final acid pH 1 ~ 2, temperature 45 ~ 80 ℃, time 1 ~ 2 hours, zinc ion concentration of 100 ~ 140 g / L, SiO_2 <15 g / L, Condensation, can reduce the viscosity of leaching pulp, solid-liquid separation smoothly, the leaching rate of zinc> 95%, the filtration rate of 1.5 ~ 3 m ~ 3 / m ~ 2 hours results. Among the many factors studied, acidity, the concentration of silicic acid in the solution and its electrolyte components, have the greatest effect on ion concentration.