Cooperative effect of sodium lauryl sulfate collector and sodium pyrophosphate depressant on the flotation separation of lead oxide minerals from hematite  

作　　者：Honghu Tang Bingjian Liu Mengshan Li Qiancheng Zhang Xiongxing Zhang Feng Jiang 

机构地区：[1]School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China [2]Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization,Central South University,Changsha 410083,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2024年第9期1975-1984,共10页矿物冶金与材料学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52004335 and 52204298);the National Natural Science Foundation of Hunan Province,China(No.2023JJ20071);the Science and Technology Innovation Program of Hunan Province,China(No.2023RC3067).

摘　　要：As a cornerstone of the national economy,the iron and steel industry generates a significant amount of sintering dust containing both valuable lead resources and deleterious elements.Flotation is a promising technique for lead recovery from sintering dust,but efficient separation from Fe_(2)O_(3) is still challenging.This study investigated the cooperative effect of sodium lauryl sulfate(SLS,C_(12)H_(25)SO_(4)Na)and sodium pyrophosphate(SPP,Na_(4)P_(2)O_(7))on the selective flotation of lead oxide minerals(PbOHCl and PbSO_(4))from hematite(Fe_(2)O_(3)).Optimal flotation conditions were first identified,resulting in high recovery of lead oxide minerals while inhibiting Fe_(2)O_(3) flotation.Zeta potential measurements,Fourier transform infrared spectroscopy(FT-IR)analysis,adsorption capacity analysis,and X-ray photoelectron spectroscopy(XPS)studies offer insights into the adsorption behaviors of the reagents on mineral surfaces,revealing strong adsorption of SLS on PbOHCl and PbSO_(4) surfaces and remarkable adsorption of SPP on Fe_(2)O_(3).The proposed model of reagent adsorption on mineral surfaces illustrates the selective adsorption behavior,highlighting the pivotal role of reagent adsorption in the separation process.These findings contribute to the efficient and environmentally friendly utilization of iron ore sintering dust for lead recovery,paving the way for sustainable resource management in the iron and steel industry.

关 键 词：sintering dust flotation separation sodium lauryl sulfate sodium pyrophosphate selective adsorption 

分 类 号：TD951[矿业工程—选矿] TD923