Effect of HEDP on flotation separation of apatite from calcite using sodium oleate as collector

被引:0
|
作者
Liu C. [1 ]
Zheng Y.-F. [1 ]
Yang S.-Y. [1 ]
机构
[1] School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan
来源
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2021年 / 31卷 / 06期
基金
中国国家自然科学基金;
关键词
Apatite; Calcite; Flotation separation; HEDP; Sodium oleate;
D O I
10.11817/j.ysxb.1004.0609.2021-36611
中图分类号
学科分类号
摘要
A depressant hydroxy ethylidene diphosphonic acid (HEDP)was introduced as the depressant for the flotation separation of apatite from calcite using sodium oleate (NaOl) as a collector. The microflotation results show that both apatite and barite have good floatability in the presence of NaOl. The addition of HEDP significantly depresses the calcite flotation while it only slightly affects apatite flotation. Mixed minerals flotation results confirm that the efficient flotation separation of apatite from calcite can be achieved using HEDP as a depressant. Zeta potential measurements indicate that HEDP can interact with both apatite and calcite surfaces. HEDP-treated apatite prevents the NaOl adsorption onto the calcite surface rather than the apatite surface. Considering the molecular structure of HEDP and the atomic arrangement of mineral surfaces, the O(P=O)-O (P=O) distance of HEDP only matches well with the Ca-Ca distance on the calcite surface, which may lead to the stable HEDP adsorption onto the calcite surface instead of apatite surface. In addition, the different anionic groups on apatite and calcite surfaces also cause the various electrostatic repulsive forces with HEDP. Thus, the adsorption of HEDP onto the calcite surface is stronger than that onto the apatite surface, then, the selective depression of calcite can be achieved in the apatite flotation. © 2021, Science Press. All right reserved.
引用
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页码:1632 / 1638
页数:6
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  • [1] LIU X, RUAN Y Y, LI C X, Et al., Effect and mechanism of phosphoric acid in the apatite/dolomite flotation system, International Journal of Mineral Processing, 167, pp. 95-102, (2017)
  • [2] ZHOU F, WANG L, XU Z, Et al., Reactive oily bubble technology for flotation of apatite, dolomite and quartz, International Journal of Mineral Processing, 134, pp. 74-81, (2015)
  • [3] CAO Q B, CHENG J H, WEN S M, Et al., A mixed collector system for phosphate flotation, Minerals Engineering, 78, pp. 114-121, (2015)
  • [4] ZHONG Ben-he, WU De-qiao, YANG Hai-lan, Et al., Study on the way to use low-grade phosphate rock in China, Inorgnic Chemistry Industry, 41, 2, pp. 1-5, (2009)
  • [5] LIU C, ZHANG W, LI H., Selective flotation of apatite from calcite using 2-phosphonobutane-1, 2, 4-tricarboxylic acid as depressant, Minerals Engineering, 136, pp. 62-65, (2019)
  • [6] SIS H, CHANDER S., Reagents used in the flotation of phosphate ores: A critical review, Minerals Engineering, 16, 7, pp. 577-585, (2003)
  • [7] FILIPPOV L O, DUVERGER A, FILIPPOVA I V, Et al., Selective flotation of silicates Ca-bearing minerals: The role of nonionic reagent on cationic flotation, Minerals Engineering, 36, 38, pp. 314-323, (2012)
  • [8] DONG L, WEI Q, QIN W, Et al., Selective adsorption of sodium polyacrylate on calcite surface: Implications for flotation separation of apatite from calcite, Separation and Purification Technology, 241, (2020)
  • [9] LIU C, SONG S X, LI H Q, Et al., Elimination of the adverse effect of calcite slimes on the sulfidization flotation of malachite in the presence of water glass, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 563, pp. 324-329, (2019)
  • [10] ZHANG Ying, HU Yue-hua, WANG Yu-hua, Et al., Effects of sodium silicate on flotation behavior of calcium-bearing minerals and its mechanism, The Chinese Journal of Nonferrous Metals, 24, 9, pp. 2366-2372, (2014)