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主要从实验角度研究了脆硫铅锑矿精矿的基本挥发规律,探讨了主要元素Sb,Pb,Zn,Fe在真空蒸馏过程中在残留物中及挥发物中的分配情况。实验结果表明:593 K时脆硫铅锑矿精矿开始挥发,593~1023 K脆硫铅锑矿精矿挥发较慢,1073 K开始挥发量急剧增加,当温度为1473 K脆硫铅锑矿完全挥发。元素铁基本不挥发;当温度为1023~1173 K时,元素锑挥发剧烈,之后升高温度对于元素锑的挥发几乎没有影响;当温度为1473 K时,锑在从残留物中的质量已经降低至0.002 g,挥发率高达99.99%;当温度为1123 K时,元素铅在残留物中的质量为23.15 g,挥发率为11.17%,当温度上升至1223 K时,元素铅的质量降低至0.009 g,挥发率为99.96%;当温度为1223~1323 K时,元素在残留物中的质量由7.17缓慢减小至5.18g,因此挥发率出现一个平稳段,继续升温锌开始剧烈挥发,1423 K时,锌几乎完全挥发。因此元素锌的挥发是影响脆硫铅锑矿精矿挥发的最重要因素。
The basic law of volatilization of jasmine-lead-antimony concentrate is mainly studied from the experimental point of view. The distribution of the main elements Sb, Pb, Zn and Fe in the residue and the volatiles in the vacuum distillation is discussed. The experimental results show that when the content of 593 K, the volatile concentrate of jasite is started to volatilize, the volatile content of 593 ~ 1023 K jasmine lead and antimony concentrate is relatively slow, and the volatile content starts to increase sharply at 1073 K. When the temperature is 1473 K, Completely volatile. Elemental iron is essentially non-volatile; elemental antimony volatilizes violently when the temperature is between 1023 and 1173 K, and then the elevated temperature has little effect on the volatilization of elemental antimony; the antimony has a reduced mass from the residue at 1473 K To 0.002 g, the volatilization rate is as high as 99.99%. When the temperature is 1123 K, the mass of lead in the residue is 23.15 g and the volatilization rate is 11.17%. When the temperature rises to 1223 K, the mass of lead is reduced to 0.009 g, the volatilization rate was 99.96%. When the temperature was 1223-1323 K, the mass of the element in the residue slowly decreased from 7.17 to 5.18g, and the volatilization rate showed a plateau. When zinc is almost completely volatile. Therefore, the elemental zinc volatilization is the most important factor affecting the volatilization of jasmine concentrate.