氟碳铈矿还原焙烧相变及浮选行为研究

金属矿山 ›› 2024, Vol. 53 ›› Issue (4): 142-.

氟碳铈矿还原焙烧相变及浮选行为研究

赵英杰1　汤家焰1,2　何嘉宁1　赵　芳1　王晓平1,2　王介良1,2,3　曹　钊1,2,3

1. 内蒙古科技大学矿业与煤炭学院,内蒙古包头 014010;2. 内蒙古自治区矿业工程重点实验室,内蒙古包头 014010; 3. 白云鄂博共伴生矿资源高效综合利用省部共建协同创新中心,内蒙古包头 014010

出版日期:2024-04-15 发布日期:2024-05-17

Study on Phase Transformation and Flotation Behavior of Reduction Roasting of Bastnaesite

ZHAO Yingjie1　TANG Jiayan1,2　HE Jianing1　ZHAO Fang1　WANG Xiaoping1,2　#br# WANG Jieliang1,2,3　CAO Zhao1,2,3#br#

1. School of Mining and Coal,Inner Mongolia University of Science and Technology,Baotou 014010,China; 2. Inner Mongolia Key Laboratory of Mining Engineering,Baotou 014010,China; 3. Efficient Comprehensive Utilization of Associated Mineral Resources Jointly Built by the Ministry,Baotou 014010,China

Online:2024-04-15 Published:2024-05-17

摘要/Abstract

摘要： 白云鄂博矿选铁过程中常使用还原焙烧方法,焙烧过程中稀土矿物会发生物相转变,并对其浮选行为产生影响。通过XRD 分析测试、SEM-EDS 测试、浮选试验、接触角测试、Zeta 电位测试、X 射线光电子能谱(XPS)分析等手段研究了氟碳铈矿经过400、450、500、550 ℃焙烧后的物相变化,以及在两种捕收剂辛基羟肟酸(OHA)和二乙基己基磷酸酯(2ZHP)作用下对氟碳铈矿和500 ℃ 焙烧氟碳铈矿浮选行为的影响。XRD 和SEM-EDS 测试结果表明, 450 ℃焙烧氟碳铈矿为REFCO3,500 ℃焙烧氟碳铈矿部分分解为RE3O4F3,550 ℃焙烧氟碳铈矿时彻底转变为新物质 RE3O4F3。捕收剂OHA 对500 ℃焙烧氟碳铈矿生成的新物质RE3O4F3 浮选效果较差,2ZHP 对氟碳铈矿REFCO3 和 500 ℃氟碳铈矿焙烧产物RE3O4F3 的捕收能力相当。接触角测试表明,2ZHP 更能够强化氟碳铈矿和500 ℃焙烧氟碳铈矿的表面疏水性,Zeta 电位测试表明,相比较OHA 而言,2ZHP 能更有效地在焙烧后的氟碳铈矿表面吸附。XPS 测试表明,OHA 和2ZHP 通过在矿物表面吸附起到捕收作用,2ZHP 在焙烧后的氟碳铈矿表面吸附量更大,2ZHP 也更适合用于焙烧后的氟碳铈矿的浮选。

关键词: 焙烧氟碳铈矿　物相变化　浮选　辛基羟肟酸　二乙基己基磷酸酯

Abstract: The reduction roasting method is often used in the process of iron separation in Bayan Obo mine. During the roasting process,the phase transformation of rare earth minerals will occur and affect its flotation behavior. In this paper,the physical phase changes of cerium fluorocarbon (Cerium fluoride) after roasting at 400,450,500,550 ℃ and the effects of the flotation behaviour of Cerium fluorocarbon (Cerium fluoride) and roasted Cerium fluorocarbon (Cerium fluoride) at 500 ℃ under the action of two trappers,octyl hydroxamic acid (OHA) and diethylhexyl phosphate (2ZHP),were investigated by means of XRD analytical tests,SEM-EDS tests,flotation tests,contact angle tests,kinetic potential tests of mineral surfaces,and X-ray photoelectron spectroscopy (XPS) analyses. XRD and SEM-EDS test results show that REFCO3 is obtained when calcined at 450 ℃,RE3O4F3 is partially decomposed when calcined at 500 ℃,and RE3O4F3 is completely transformed when calcined at 550 ℃. The collector OHA has poor flotation effect on the new substance RE3O4F3 produced by the calcination of cerium fluocerite at 500 ℃,The contact Angle test showed that 2ZHP could strengthen the surface hydrophobicity of bastnaesite and roasting bastnaesite at 500 ℃. Zeta potential test showed that compared with OHA,2ZHP could adsorb bastnaesite more effectively. XPS test showed that OHA and 2ZHP played a trapping role through mineral surface adsorption. However,the adsorption capacity of 2ZHP on the surface of calcined bastnaesite is greater. while the collector 2ZHP has the same collecting capacity for REFCO3 and RE3O4F3 produced by the calcination of cerium fluocerite at 500 ℃. 2ZHP is more suitable for the flotation of cerium fluoride after roasting.

Key words: roasted bastnaesite,phase transformation,flotation,octyl hydroxamic acid,diethylhexyl phosphate

赵英杰, 汤家焰, 何嘉宁, 赵　芳, 王晓平, 王介良, 曹　钊. 氟碳铈矿还原焙烧相变及浮选行为研究[J]. 金属矿山, 2024, 53(4): 142-.

ZHAO Yingjie, TANG Jiayan, HE Jianing, ZHAO Fang, WANG Xiaoping, WANG Jieliang, CAO Zhao. Study on Phase Transformation and Flotation Behavior of Reduction Roasting of Bastnaesite[J]. Metal Mine, 2024, 53(4): 142-.

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