Leaching method of high-silicon-zinc roasted ore

The invention relates to a leaching method of high-silicon zinc roasted ore, and belongs to the technical field of zinc roasted ore leaching. The method comprises the three leaching steps of neutral leaching, weak acid leaching and sub-hot acid leaching, dissolution of acid-soluble silicon dioxide in the zinc roasted ore and precipitation of silicon protein are synchronously carried out by controlling the acidity of ore pulp in the neutral leaching process, and therefore silicic acid is prevented from forming the maximum concentration in the neutral leaching process; and large-size difficult-to-settle slag cannot be formed at the last stage of intermediate leaching, ore pulp easy to settle is produced, the supernatant rate of the leached ore pulp is increased, the influence of silicon on the leaching process of the zinc roasted ore is greatly reduced, and smooth production is guaranteed. 本发明涉及一种高硅锌焙烧矿的浸出方法，属于锌焙烧矿浸出技术领域；本发明包括中性浸出、弱酸浸出和亚热酸浸出三个浸出步骤，通过控制中性浸出过程中矿浆的酸度使锌焙烧矿中的酸可溶二氧化硅溶出和硅蛋白的沉淀析出同步进行，从而阻止硅酸在中浸过程中形成最大浓度