有色设备

In this study, a high-speed spray extraction and purification process for crude germanium tetrachloride was developed, and a special extraction device was designed. The effects of extractant acidity, extraction ratio and extraction temperature on the extraction efficiency were investigated. The results show that the arsenic removal rate is 99.4% and germanium loss rate is only 0.17% under the conditions of extractant acidity of 12n, volume ratio of germanium tetrachloride to extractant of 1〖DK〗∶2.5, temperature control of extraction interlayer circulating liquid of 5℃, extraction spray extraction time of 10min and standing time of 4h after extraction; And the quality of high-purity germanium dioxide produced by extraction process is significantly higher than that of crude germanium tetrachloride produced by re steaming process in the same batch.