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本厂处理的錫矿,是品位低、含杂質复杂的一种低級錫矿。杂質包括鎢、鉛、鉍、銅、铁、砷、硫及脈石等。为了除去这些杂质及回收伴随的有用矿物,采取了磁选、粒浮、焙燒等过程。但由于錫矿杂質种类很多,含量又丰富,虽然經过了几道处理,鉛、鉍、砷、銅等杂質在錫矿中含量仍高,因而必須进一步用水冶法淨化錫石以除去鉛、鉍等。 錫矿中鉛、鉍、鉄、銅、砷等及其他杂质,全面地与酸作用进入溶液中,而与錫石分离。故近代对于錫精矿熔煉以前淨化杂質的作业,广泛地采用酸溶浸过程。此法成本較高,不过,以本厂处理錫矿条件而論,因含有鉍矿,可以从溶液中进行回收,回收鉍矿的价值,可以补偿耗酸价值的一部份。为了更大限度地除去杂質,提高产品質量,滿足国家及其他經济部
Tin processing factory tin, is a low grade, with impurities of a low-level tin. Impurities include tungsten, lead, bismuth, copper, iron, arsenic, sulfur and gangue. In order to remove these impurities and recovery associated with the useful minerals, to take the magnetic separation, particle floating, roasting and other processes. However, due to many types of tin impurities, rich in content, although after several treatment, lead, bismuth, arsenic, copper and other impurities in the tin content is still high, so you must further purification of cassiterite by water to remove Lead, bismuth and so on. Tin in the lead, bismuth, 鉄, copper, arsenic, etc. and other impurities, a comprehensive and acid into the solution, and the separation of cassiterite. Therefore, the recent smelting of tin concentrate purification of impurities before the operation, widely used acid leaching process. The high cost of this method, however, in our factory to deal with tin conditions in terms of containing bismuth ore, can be recovered from the solution, the value of bismuth recovery, you can compensate for some of the acid value. In order to remove impurities to a greater extent, improve product quality, to meet the national and other economic ministries