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近年来,冶炼厂对锌精矿硅含量提出了新的要求,即不超过7％。1g84年第一季度,我矿锌精矿硅含量超标,致使产品积压和降价处理。为了使锌精矿硅含量达到要求,我们进行水玻璃降低锌精矿硅含量的试验和生产实践,取得了较好的技术经济指标。1984年6月以来,锌精矿硅含量达到6％以下,且提高锌精矿品位,增加企业的经济效益。 (一)矿石性质该矿矿床为裂隙充填交代中温热液矿床,产于泥盆纪岩断裂带中。矿石的金属矿物以方铅矿、闪锌矿为多,还有黄铁矿、黄铜矿、毒砂、锡石、白铁矿和磁铁矿等;脉石以石英为主,还有白云母、绢云母、绿泥石、石灰石。金属矿物呈粗细不均匀嵌布,方铅矿粒度一般为0.1～0.2毫米,闪锌矿为0.02～2毫米;这两种矿
In recent years, smelters have proposed new requirements for the silicon content of zinc concentrates, ie no more than 7%. 1g84 first quarter of 2004, I exceeded the silicon content of zinc ore concentrate, resulting in product backlog and price cuts. In order to meet the requirements of the silicon content of zinc concentrate, we reduce the silicon content of zinc concentrate test and production practices, and achieved good technical and economic indicators. Since June 1984, the content of silicon in zinc concentrate has reached below 6%, and the grade of zinc concentrate has been raised to increase the economic benefits of the enterprise. (I) Ore properties The ore deposit is a fracturing-filled hydrothermal fluid deposit and is produced in the Devonian rock fracture zone. Ore metal minerals to galena, sphalerite more, as well as pyrite, chalcopyrite, arsenopyrite, cassiterite, white iron ore and magnetite; gangue to quartz, as well as white clouds Mother, sericite, chlorite, limestone. The thickness of the metal mineral is unequally embedded, galena size is generally 0.1 to 0.2 mm, sphalerite 0.02 to 2 mm; these two minerals