东波矿锡选矿厂原采用单一重选流程获锡精矿后,再用浮选脱硫、弱磁选脱铁,得到最终商品锡精矿,其锡回收率仅20—25%,有时甚至低达15%。为此,对原料中-37微米粒级锡矿泥,采用甲苄胂酸进行浮选富集,取得了较好的结果,初步估计,可提高总回收率10%以上。(一)原料性质原料来自本工区铅锌选矿厂的尾矿。原矿主要金属矿物为锡石、闪锌矿、方铅矿、黄铜矿、黄铁矿、磁黄铁矿、脆硫锑铅矿、磁铁矿;脉石为方解石、白云石、萤石、绿泥石、绢云母、石榴子石等。尾矿含锡0.22%左右,矿石粒度0.2毫米,其中-0.037毫米粒级占40—50%,锡占有率40%左右。锡石单体解离度90—95%。(二)试验从生产现场取-37微米粒级代表性试样,脱去—10微米粒级细泥后作浮选试料。闭 After using a single re-election process to obtain tin concentrate, the Dongbo ore tin concentrator was reused with flotation desulfurization and weak magnetic separation to obtain the final product tin concentrate with a tin recovery rate of only 20-25% and sometimes even low Up to 15%. To this end, raw materials -37 micron size tin mine, the use of arsenic acid flotation enrichment, and achieved good results, a preliminary estimate can increase the total recovery of 10% or more. (A) the nature of raw materials Raw materials from the zinc ore dressing plant tailings. The main minerals of the ore are cassiterite, sphalerite, galena, chalcopyrite, pyrite, pyrrhotite, jasperite and magnetite. The gangue is calcite, dolomite, fluorite, Chlorite, sericite, garnet and so on. Tailings containing about 0.22% of tin, ore size 0.2 mm, of which -0.037 mm particle size accounted for 40-50%, tin share of about 40%. Cassiter monomer 90-95% dissociation. (B) Test Take a representative sample of -37 micron particle size from the production site and remove flotation sample after removing -10 micron fine particle size fine mud. close