Through the comprehensive utilization of chromium leaching residue resources, the average leaching rate of Cr6 + is 99.94%, the average leaching rate of Σ Cr is 86.55%, and the average leaching rate of Fe is 94.72%. More than 99% Fe (OH) 2 and more than 98.5% Cr (OH) 2 can be obtained by the extraction reverse extraction precipitation process; more than 97% of calcium sulfate (whisker), more than 40% of magnesium carbonate and more than 98% of industrial sodium chloride can be obtained by the treatment process of the raffinate, and the raffinate after treatment can be returned to the leaching process for recycling, realizing the by-product of hydrochloric acid and chromium resources Comprehensive utilization.<br>
正在翻译中..