Inorganic Chemicals Industry >
Study on reformation and extracting iron of copper slag and silicon-manganese water quenched slag composites
Received date: 2022-04-21
Online published: 2023-01-17
A large amount of metallurgical slag such as water slag and dry slag has been produced in the production process of copper and other metal materials，its comprehensive utilization level is low，which is becoming the focus and difficulty to be solved urgently for high-quality green development of metallurgical industry.In order to effectively recover Fe from copper slag，industrial copper slag was mixed with silicon-manganese water quenched slag and modified by adding CaO and MnO in a certain proportion.The trend of mineral phases in the mixed slag with temperature was predicted by FactSage，and the changes of mineral phases in the slag before and after modification were compared by XRD，and the morphology，distribution and characteristics of the main mineral phases in the modified mixed slag were characterized by SEM and EDS.The experimental results showed that the mineral phase in the modified mixed slag was dominated by spinel phase and silicate phase.With the increase of alkalinity，the silicate phase in the modified sample was increased but the spinel phase was decreased.The best modification effect was achieved when the alkalinity of the mixed slag was 1.5，and the mass fraction of its iron grade was 44% and the recovery rate was 95%.
Key words： copper slag; silicon manganese water quenching slag; reformation; spinel; silicate
Bin ZHENG , Liang JIANG , Fenglan HAN , Hongru MA , Zhihong QI , Hui SU . Study on reformation and extracting iron of copper slag and silicon-manganese water quenched slag composites[J]. Inorganic Chemicals Industry, 2023 , 55(1) : 136 -143 . DOI: 10.19964/j.issn.1006-4990.2022-0230
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