(中南大學(xué) 礦物工程系，長沙 410083)
摘 要: 為了查清高堿電位環(huán)境對(duì)閃鋅礦表面性質(zhì)抑制作用的根本原因，采用C2 Soterware分子力場(chǎng)中的萬能力場(chǎng)方法，對(duì)閃鋅礦(110)表面CaOH+和OH-兩種離子的吸附進(jìn)行了動(dòng)力學(xué)模擬，并對(duì)吸附能和吸附質(zhì)量云圖進(jìn)行了分析。模擬結(jié)果表明，相對(duì)于OH-來說，CaOH+在閃鋅礦(110)表面的吸附能更負(fù)，吸附量更大。由此可知，這些吸附在表面的離子又與OH-和硫化礦氧化產(chǎn)物產(chǎn)生的SO2-4等離子作用形成不溶性親水表面產(chǎn)物， 從而導(dǎo)致礦物受到抑制，這也正是高堿電位調(diào)控成功的原因之一。
關(guān)鍵字: 吸附；分子力場(chǎng)方法；閃鋅礦；硫化礦浮選
adsorption on ZnS(110)
（Department of Mineral Engineering,
Central South University, Changsha 410083, China）
Abstract:The adsorption action of CaOH+ and OH- on ZnS( 110) was simulated by molecular-force-field method.The adsorption energy and qu ality distribution clouds was analyzed.The result indicates that there is more affinity between CaOH+ and ZnS(110) than that between OH- and the mineral surface.The result gives a good explanation for success of potential-control technique used in Fankou Lead-Zinc Plant.
Key words: sorption; molecular-force-field-method; sphalerite; sulfide-flotation
