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研究了CN~-与黄铜矿和方铅矿之间的吸附作用,然后在丁基黄药(BX)体系下研究了氰化吸附后的黄铜矿、方铅矿的浮选试验。结果表明,CN~-与两种矿物表面存在化学吸附作用,并可用Langmuir等温模型近似描述。在pH值为6.5,丁基黄药用量为4.0 mg/L的适宜条件下,氰化后的黄铜矿和方铅矿的浮选回收率可分别达到82.1%和63.9%。尽管CN~-降低了黄铜矿、方铅矿表面的接触角,但丁基黄药能够提高氰化矿物表面的疏水性。CN~-对黄铜矿的抑制作用大于方铅矿。在pH值为4.2~8.4时,BX与氰化后的方铅矿表面的相互作用存在静电吸附;BX在氰化后的黄铜矿表面的吸附作用为化学吸附。
The adsorption between CN ~ - with chalcopyrite and galena was studied. The flotation of chalcopyrite and galena after cyanidation was studied under butyl xanthate (BX) system. The results show that CN ~ - has chemisorption on the surface of both minerals and can be approximated by the Langmuir isothermal model. The flotation recoveries of cyanide chalcopyrite and galena reached 82.1% and 63.9% respectively under the suitable conditions of pH 6.5 and butyl xanthate 4.0 mg / L. Although CN ~ - reduces the contact angles of chalcopyrite and galena surfaces, butyl xanthate can enhance the hydrophobicity of cyanide mineral surfaces. CN ~ - inhibition of chalcopyrite is greater than galena. At pH 4.2 ~ 8.4, the interaction between BX and cyanided galena surface is electrostatic. The adsorption of BX on the surface of chalcopyrite after cyanidation is chemisorption.