中文摘要：

用红外光谱测定合成黄原酸盐有机抑制剂的结构,结果表明,合成黄原酸盐有机抑制剂中引入了-CSS-,又存在多个亲水基.通过浮选实验考察了Cu2＋对黄原酸盐抑制效果的影响以及黄原酸盐所携带亲水基团的个数和亲水亲油值对黄铁矿抑制效果的影响,并在此基础上分析了有机抑制剂的抑制机理.实验结果说明：Cu2＋存在下多羟基黄原酸盐对黄铁矿的抑制效果依然良好,并在pH〉6范围内抑制作用趋于平稳.随着多羟基黄原酸盐带所带亲水基团的逐渐增多和HLB值的增大,抑制效果都逐渐增强.

英文摘要：

The results of infrared spectrum indicate that the structure of the synthesis of xanthate organic depressant consist of-CSS-and has several hydrophilic groups.This paper studies the effect of the Cu2＋ ion,the number of hydrophilic groups as well as the HLB of the synthesis of xanthate on depressing ability to pyrrhotite with flotation test.The inhibition mechanism of organic depressant is analyzed.The results of the experiment show that the depressing ability is still good in case of the presence of Cu2＋ ion,in the pH range of 6-10,the depressing effect become stable.With the increase of the HLB and the number of hydrophilic group of xanthate,the depressing effect will be enhanced.