这是一篇矿物加工工程领域的文章.河北某铅锌矿中主要有价元素为铅、锌,品位分别为1.07％、2.08％.矿石中的铅主要赋存于方铅矿中,另有白铅矿、硫酸铅、铅铁矾等含铅矿物,锌主要赋存于硫化物闪锌矿中,占总锌的66.96％,其次为氧化锌矿物,锌氧化率较高.在实验研究中,确定了在-0.074 mm 65％的磨矿细度条件下,优先浮铅再浮锌的工艺.浮选产品中,铅精矿产率1.74％,铅精矿中铅、锌、铜品位分别为51.73％、10.86％、3.81％,回收率分别为83.93％、8.98％、68.20％;锌精矿产率为2.26％,锌精矿中铅、锌、铜品位分别为 1.25％、51.64％、0.73％,回收率分别为 2.63％、55.42％、16.97％.
Technological Mineralogical Analysis and Flotation Test of a Refractory Lead-zinc Ore in Hebei
This is an article in the field of mineral processing engineering.The main valuable elements in a lead-zinc mine in Hebei are lead and zinc,with grades of 1.07％and 2.08％,respectively.Lead in the ore mainly occurs in sulfide galena,and lead-containing minerals such as galena,lead sulfate and lead jarosite.Zinc mainly occurs in sulfide sphalerite,accounting for 66.96％of the total zinc,followed by zinc oxide minerals,with high zinc oxidation rate.In the experimental study,the process of preferential flotation of lead and then zinc at the condition of grinding fineness of-200 mesh content of 65％was determined.The yield of lead concentrate is 1.74％,the grades of lead,zinc and copper in lead concentrate are 51.73％,10.86％and 3.81％,respectively,and the recoveries are 83.93％,8.98％and 68.20％,respectively.The yield of zinc concentrate is 2.26％,the grades of lead,zinc and copper in zinc concentrate are 1.25％,51.64％and 0.73％,respectively,and the recoveries are 2.63％,55.42％and 16.97％,respectively.
Mineral processing engineeringSulfide oreLead zinc oreProcess mineralogySeparation flotation
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