Flotation performance of a new collophane reverse flotation collector

He, Defu; Xie, Zhihao; Xie, Weining; Liu, X.; Li, H. Q.; Wu, Yankun; Hu, Yuling

doi:10.19150/mmp.8291

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…24 Additionally, the low recoveries of chalcopyrite and pyrite were also due to the instability of KEX in an acid environment. 25 However, when the pulp pH increased to 4.4, both chalcopyrite and pyrite recoveries increased dramatically to 91.9 and 52.5%, respectively. With further increasing pH, the two curves of chalcopyrite and pyrite distinguished different trends.…”

Section: Resultsmentioning

confidence: 97%

Selective Separation of Chalcopyrite from Pyrite Using Sodium Humate: Flotation Behavior and Adsorption Mechanism

Sun,

Li,

et al. 2023

ACS Omega

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Flotation separation of chalcopyrite from pyrite using lime or cyanides as depressants results in serious problems, such as the blockage of pipelines and environmental pollution. Eco-friendly organics are a future trend for beneficiation plants. In this research, the eco-friendly organic depressant sodium humate (SH) was chosen as a depressant to separate chalcopyrite from pyrite by flotation. The results indicated that SH could selectively depress pyrite owing to the oxidation species (FeOOH, Fe2(SO4)3) on its surface. The oxidation species were the adsorption sites for the COO– in the SH structure and impeded the subsequent collector potassium ethyl xanthate (KEX) adsorption. However, chalcopyrite was slightly oxidized with fewer oxidation species for SH adsorption, and KEX could be adsorbed and functioned effectively. This research suggested that SH could be an effective and eco-friendly depressant in chalcopyrite–pyrite flotation separation, which had potential use in the industry.

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Section: Resultsmentioning

confidence: 97%

Selective Separation of Chalcopyrite from Pyrite Using Sodium Humate: Flotation Behavior and Adsorption Mechanism

Sun,

Li,

et al. 2023

ACS Omega

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“…Sulfuric acid is the commonly used as pH regulator in reverse flotation of collophane (He et al, 2018). The floatability of apatite was selectively depressed in acidic system, resulting in the flotation of dolomite for the separation of apatite and dolomite.…”

Section: Dosage Of H2so4mentioning

confidence: 99%

The removal of dolomite from collophane using reverse flotation process enhanced by compound collector

Liu¹,

Tian²,

Deng³

et al. 2023

Physicochem. Probl. Miner. Process.

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To improve the magnesia removal effect of collophane and increase the P2O5 grade of phosphorus concentrate, the fatty acid collector mixed with sodium dodecyl sulfate (SDS) was used as the compound collector in reverse flotation for magnesia removal in acid system. Solution surface tension measurement, Zeta potential test and infrared spectrum analysis were conducted to analyze the intensified effect of compound collector for dolomite removal. The results showed that under the conditions of grinding fineness -0.074 mm accounted for 89.8%, sulfuric acid dosage 12.0 kg/t, phosphoric acid dosage 3.0 kg/t, SDS compound proportion 3%, collector dosage 1.0 kg/t, the P2O5 grade of concentrate is increased from 25.7% to 29.94%. SDS can reduce the surface tension of slurry, which is conducive to the formation and stability of flotation foam. Zeta potential became negative due to the compound collector adsorbed on the mineral surface. Moreover, the -CH2 antisymmetric stretching vibration peak originated from fatty acid and SDS were detected after the interaction of collectors with dolomite. The compound collector was effectively adsorbed on the surface of dolomite, enhancing the magnesium removal effect of collophane.

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Flotation performance of a new collophane reverse flotation collector

Cited by 2 publications

References 12 publications

Selective Separation of Chalcopyrite from Pyrite Using Sodium Humate: Flotation Behavior and Adsorption Mechanism

Selective Separation of Chalcopyrite from Pyrite Using Sodium Humate: Flotation Behavior and Adsorption Mechanism

The removal of dolomite from collophane using reverse flotation process enhanced by compound collector

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