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采用传统法对贵州回龙矿石进行试验,测得矿石中硫磺、硫酸盐及硫化物的质量分数分别为0.42%、0.13%、3.10%,而采用MLA仪器该矿石进行分析,结果显示矿石中硫化物占95%,几乎没有硫磺.这表明传统的硫赋存状态分析方法无法准确测定该矿石中的硫磺、硫化物的含量.针对传统检测方法对硫磺、硫化物的分析误差较大的问题,提出了先用四氯乙烯来萃取矿石中的硫磺,然后用碳酸钠溶液浸出硫酸盐,最后分两步浸出硫化物的分相流程的新方法.改进的新方法测得矿石中硫磺、硫酸盐及硫化物的质量分数分别为0.04%、0.13%、3.48%,该结果跟仪器测试结果非常吻合,表明该新方法准确度高,也适用于含有重晶石的矿石中硫赋存状态的分析.
The traditional method was used to test the Huilong ore in Guizhou. The mass fraction of sulfur, sulfate and sulfide in the ore was 0.42%, 0.13% and 3.10%, respectively. However, the ore was analyzed by MLA. The results showed that the sulfide Accounting for 95% of the total, almost no sulfur, which shows that the traditional sulfur state analysis method can not accurately determine the content of sulfur and sulfide in the ore.Aiming at the large error of the traditional detection methods for sulfur and sulfide, Proposed the first use of tetrachlorethylene to extract the ore sulfur, and then leached with sodium carbonate sulfate, the final step in two steps leaching of sulfide separation of the new method.An improved method to measure the ore sulfur, sulfate And the mass fraction of sulfides were 0.04%, 0.13% and 3.48%, respectively. The results are in good agreement with the test results of the instrument, indicating that the new method is of high accuracy and suitable for the analysis of sulfur occurrence in ore containing barite .