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为了对ISP冶炼工艺提供合理的原料,研究成功了生产高品位铅锌混合精矿的铅锌异步混合浮选工艺。该新工艺与传统的混合浮选工艺不同,其主要特点是在整个的铅锌混合浮选过程中,人为地分阶段地控制浮选矿浆的抑制活化因素和捕收剂的作用强度,有效地控制了方铅矿、闪锌矿和黄铁矿的浮游性。在闪锌矿滞后活化的条件下,确保铅锌矿物不同步地在各自最适宜的工艺条件下,最充分地呈现出最佳浮游性,达到铅锌混合精矿品位高、铅锌银回收率高的目的。新工艺在凡口铅锌矿1000吨/日的生产系列中成功地完成了工业试验,并已在生产中应用。
In order to provide a reasonable raw material for the ISP smelting process, the lead-zinc asynchronous mixed flotation process for the production of high-grade lead-zinc mixed concentrates has been successfully researched. The new process is different from the traditional mixed flotation process, its main feature is that in the entire lead-zinc mixed flotation process, the phased control of the flotation pulp inhibitory activation factors and collector strength, effectively Control of goulash, sphalerite and pyrite floating. Under the condition of hysteresis activation of sphalerite, it is ensured that lead-zinc minerals can not exhibit the best synchronism under the most suitable process conditions, so that the lead-zinc minerals can exhibit the best floatability to the high grade of lead-zinc mixed concentrate and the recovery rate of lead, zinc and silver High purpose. The new process has successfully completed industrial tests in the 1000t / day production line of the Fankou lead-zinc mine and has been used in production.