【摘要】 本文通过吸附动力学和热力学研究不同pH条件下丁基钠黄药（NaBX）在斑铜矿表面的吸附对浮选的影响。浮选试验表明在pH值为9时,斑铜矿在NaBX溶液(4×10^-5 mol/L)中的浮选效果最佳。通过吸附动力学试验表明Na BX在斑铜矿的吸附符合第二动力学方程,属于多分子层的Freundlich模型,最大吸附速率常数为0.30 g/(10^-6 mol·min),最大平衡吸附量为2.70×10^-6 mol/g。通过热力学计算的结果表明吸附过程是自发的化学吸附过程,并通过红外光谱分析了表面产物为黄原酸铜、黄原酸铁和双黄药。更多还原

【Abstract】 In this paper,the effect of sodium butyl xanthate（NaBX） adsorption on the surface of bomite at different pH on flotation was studied by adsorption kinetic and thermodynamic.The flotation results demonstrated that the recovery was the highest when pH was 9 in NaBX solution(4×10^-5 mol/L).The adsorption kinetics showed the reaction of NaBX on the bomite conformed to the second order kinetic equation;it belonged to the multimolecular layer adsorption of Freundlich model;the maximum adsorption rate constant was 0.30 g/(10^-6mol·min),and the equilibrium adsorption capacity was 2.70×10^-6 mol/g.Thermodynamic calculation results indicated that the adsorption process was spontaneous chemisorption,and the adsorption products of NaBX on bomite surface were cupric butyl xanthate,ferric butyl xanthate and dixanthogen,which were confirmed by infrared spectrum measurements.更多还原