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Unraveling roles of lead ions in selective flotation of scheelite and fluorite from atomic force microscopy and first-principles Minerals Engineering ( IF 4.765) Pub Date :, DOI: 10.1016/j Jianyong He, Wei Sun, Hongbo Zeng, Ruihua Fan, Wenjihao Hu, Zhiyong Gao


Previous studies have proved that the lead complexes of benzohydroxamic acid (Pb–BHA) are effective collectors of scheelite flotations; however, the separation of scheelite from calcite needs depressants with high selectivity. In this study, we reported a novel depressant for calcite minerals, and Pb–BHA served as the collector of scheelite. The …


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Liu C, Feng Q M, Zhang G F, et al. Effect of depressants in the selective flotation of scheelite and calcite using oxidized paraffin soap as collector. Int J Miner Process, 2016, 157: 210 doi: 10.1016/j.minpro.2016.11.011 [2] Yin W Z, Wang J Z. Effects of particle


The flotation results showed that CLS had strong depressant effect on calcite flotation while exhibited little influence on scheelite flotation. Scheelite can be separated efficiently from scheelite-calcite mixed binary minerals in pH range of 7–11, when CLS was added prior to NaOl. The selective depressant effect of CLS on calcite was ...


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,jiaofen,, Selective depressive effect of sodium fluorosilicate on calcite during scheelite flotation, : :


However, it was less selective for scheelite and calcite in fatty acids and the Pb–BHA flotation [14,15,17]. Sodium silicate was modified using sulfuric acid and diverse metal ions to improve its selectivity and was observed to inhibit scheelite to some extent [ 18, 19 ].


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Selective depression and mechanism of polycarboxylic acid in flotation separation of scheelite from fluorite CHEN Chen 1, 2, SUN Wei 2, ZHU Hai …


Scheelite and calcite are usually intergrown calcium minerals that are separated via froth flotation. However, their selective separation remains difficult because of their similar surface properties. 2-phosphonobutane −1, 2, 4-tricarboxylic acid (PBTCA or H 5 L) is widely used in water treatment due to its low phosphorus content and efficient anti-scaling performance.


Froth flotation of scheelite has regained new focus since the 2010s and research regarding floatability and reagents has made great progress over the years. The main objective was and remains the selective flotation of scheelite from other calcium-bearing minerals, in particular calcite, fluorite and apatite.


1. Introduction. The flotation separation of scheelite from other calcium-containing minerals such as fluorite and calcite, is problematic, due to their similar solubility and the same active Ca 2+ site for interaction with anionic collectors (Rai et al., 2011).Thus, using a single type of collector is unlikely to achieve selective flotation of scheelite from fluorite and calcite.


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Selective flotation of scheelite from calcite using Al-Na2SiO3 polymer as depressant and Pb-BHA complexes as collector [J]. MINERALS ENGINEERING, 2018, 120: 29-34 [18] Yue Tong,Han haisheng, Hu Yuehua,Wei Zhao,Wang Jianjun,Wang Li, Sun Wei, Yang Yue, Sun Lei.


The flotation results reveal that the selective depression effect of PA-Na is better than that of sodium silicate, and PA-Na can depress fluorite more effectively than scheelite. The flotation recovery of scheelite and fluorite keeps …


The flotation tests showed that a novel reagent scheme, i.e., a lower dosage of SS (300 mg/L) and mixed collectors of HXMA-8 + NaOl (total concentration 4.5 × 10 − 4 mol/L, preferred mass ratio of 1:2) achieved the selective separation of scheelite from calcite. Zeta potential measurements indicated that the depressant, SS, adsorbed more ...


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Effect of depressants in the selective flotation of scheelite and calcite using oxidized paraffin soap as collector. International Journal of Mineral Processing, 157(2016): 210–215. SCI,,. [6],,,, .


The addition of ferrous sulfate as a depressant for Ca-bearing minerals such as calcite and fluorite during scheelite flotation was investigated to recover scheelite from tungsten mine tailings, using Hallimond-tube flotation tests, zeta-potential measurement and Fourier-transform infrared (FT-IR) analyses. The flotation tests indicate that the selectivity of scheelite …


Selective flotation of scheelite from calcite using a novel self-assembled Minerals Engineering ( IF 4.765) Pub Date :, DOI: 10.1016/j.mineng.2021.107120 Cong Wang, Shuai Ren, Wei Sun, Sihui Wu, Liming Tao, Yao Duan, Jianjun Wang, Zhiyong Gao


Request PDF | On Jun 29, 2016, Yuesheng Gao and others published Selective flotation of scheelite from calcite: A novel reagent scheme | Find, …


A novel green depressant for flotation separation of scheelite from calcite ... Therefore, the selective inhibition of calcite is of crucial importance in the beneficiation of scheelite. At present, water glass or modified water glass is the most common depressant in industrial production of scheelite flotation [6−11]. In addition,


1. Introduction. As the main source of tungsten and an important strategic mineral (YIN and WANG, 2014, Feng et al., 2015, Gao et al., 2016a), scheelite (CaWO 4) usually coexists with calcite in nature.Froth flotation is the most commonly used method for separating these minerals (Kupka and Rudolph, 2018).However, the selective separation of scheelite and calcite has …


Selective flotation of scheelite from calcite using calcium lignosulphonate as depressant. 【】In this work, calcium lignosulphonate (CLS) was introduced as a novel flotation depressant for separation of scheelite from calcite. Sodium oleate (NaOl) acted as collector for scheelite. The flotation results showed that CLS had strong ...


The flotation results for monominerals, mixed minerals, and actual mineral samples indicated that guar gum exhibited much higher selective depression for talc than for scheelite. Bench-scale closed-circuit tests showed that a tungsten concentrate with a WO 3 grade of 51.43% and a WO 3 recovery of 76.18% was obtained.


Selective flotation of scheelite from calcium minerals with sodium oleate as a collector and phosphates as modifiers. I. Selective flotation of scheelite. Int J Miner Process. 1983;10(3):205. Article Google Scholar [7] Shi Q, Feng Q, Zhang G, Zhang G, Deng H. A novel method to improve depressants actions on calcite flotation.


scheelite, and this finding remarkably matched with the microflotation experimental results. Furthermore, by using PA-Na as depressant, the flotation separation of scheelite from calcite can be achieved by controlling the flotation pH and PA-Na dosage. Keywords: scheelite, calcite, flotation, sodium polyacrylate, selective depression 1.


In flotation, it is very difficult to separate scheelite from calcite. In this study, sodium fluorosilicate (SFS) was used as a depressant in the flotation separation of scheelite from calcite. The selective depression effect of the SFS on calcite was proven by ...


Selective flotation of scheelite and calcite * D. P. Patil and * U. B. Nayak INTRODUCTION : The gold tailings from Kolar Gold Fields containing low scheelite values has a complex mineralogy with hornblende, quartz, arsenopyrite and calcite as major gangue minerals, The most difficult problem in scheelite flotation is not the