摘要
This study synthesised a zincic salt(ZS)as a depressant for marmatite-galena separation.The effect of ZS on the flotation of marmatite and galena was investigated through micro-flotation tests.88.89%of the galena was recovered and 83.39%of the marmatite was depressed with ZS dosage of 750 mg·L^(−1)at pH=4.The depression mechanism of ZS on marmatite was investigated by a variety of techniques,including adsorption measurements,Fourier transform infrared(FTIR),X-ray photoelectron spectroscopic(XPS)analysis,and time of flight secondary ion mass spectrometry(ToF-SIMS).Results of adsorption tests and FTIR reveal that ZS adsorbed on marmatite surface and impeded the subsequent adsorption of butyl xanthate(BX).The results of XPS and ToF-SIMS indicate that the ZnO_(2)^(3-)released by ZS could be chemisorbed on the marmatite surface and depress marmatite flotation.
基金
financially supported by the National Natural Science Foundation of China(No.52274283)
the Fundamental Research Funds for the Central Universities(No.2022JCCXHH09)
the Yueqi Outstanding Scholar award of CUMTB,the Science and Technology Major Project of Ordos City-Iconic Innovation Team(No.202204)
the National Key R&D Program of China(Nos.2022YFC2900065 and 2021YFC2902602).
