Industrial experiment on heavy metal recovery of stainless steel slag

Abstract

Industrial experiments on the hydrometallurgical recovery of heavy metals were carried out to identify ways to prevent heavy metal leaching from stainless steel tail slag and provide a scientific basis for producing steel slag fertilizers. The results showed that the comprehensive recovery percentages for metals could reach up to 86% to 95% with the process described in this paper. The average recovery percentages for Cr and Ni were about 90%. The experimental research results have been applied to engineering, and good results have been achieved. Based on mineralogical phase components of heavy metals and separation mechanisms, technological characteristics and influencing factors of the process were analyzed, and techniques for debugging are described herein. All the results should provide a good reference for widespread applications of the process.