Selective flocculation-flotation of ultrafine hematite from clay minerals under asynchronous flocculation regulation  

作　　者：Fusheng Niu Yuying Chen Jinxia Zhang Fei Liu Ziye Wang 

机构地区：[1]College of Mining Engineering,North China University of Science and Technology,Tangshan 063210,China [2]Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources,Tangshan 063210,China [3]The National Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-Ferrous Metals,GRINM Resources and Environmental Tech.Co.Ltd.,Beijing 100088,china

出　　处：《International Journal of Mining Science and Technology》2024年第11期1563-1574,共12页矿业科学技术学报（英文版）

基　　金：funded by the National Natural Science Foundation of China(No.52374265);the Central Guided Local Science and Technology Development Funding Program(No.236Z4106G);the Natural Science Foundation of Hebei Province(No.E2022209108);Key Projects of Hebei Provincial Department of Education(No.ZD2022059)。

摘　　要：The clay mineral flocculation encapsulation poses a major technical challenge in the field of fine mineral separation.Enhancing the ability to separate clay minerals from target mineral surfaces is key to addressing this issue.In the flotation process of ultrafine hematite,sodium polyacrylate(PAAS)was used as a selective flocculant for hematite,polyaluminum chloride(PAC)as a flocculant for kaolinite and chlorite,and sodium oleate(NaOL)as the collector to achieve asynchronous flocculation flotation.This study examines the flotation separation performance and validates it through experiments on actual mineral samples.The results indicate that with PAAS and PAC dosages of 1.25 and 50 mg·L^(-1),respectively,the iron grade and recovery of the actual mineral samples increased by 9.39%and 7.97%.Through Zeta potential,XPS analysis,infrared spectroscopy,and total organic carbon(TOC)testing,the study reveals the microscopic interaction mechanisms of different flocculants with minerals,providing insights for the clean and efficient utilization of ultrafine mineral resources.

关 键 词：CHLORITE HEMATITE KAOLINITE Ultrafine particles Asynchronous flocculation 

分 类 号：TD923[矿业工程—选矿] TD951