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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.
Słowa kluczowe
Rocznik
Tom
Strony
art. no. 159965
Opis fizyczny
Bibliogr. 33 poz., tab., wykr.
Twórcy
autor
- National Engineering Resource Center for Phosphate Resources Development and Utilization, Wuhan Institute of Technology, Wuhan 430073, China
- School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, China
autor
- Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China
autor
- School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, China
autor
- National Engineering Resource Center for Phosphate Resources Development and Utilization, Wuhan Institute of Technology, Wuhan 430073, China
- School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, China
autor
- National Engineering Resource Center for Phosphate Resources Development and Utilization, Wuhan Institute of Technology, Wuhan 430073, China
- School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, China
autor
- School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430073, China
Bibliografia
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- GONG, L., LIU, R., ZHANG, H., LIU, L., HE, X., PANG, J., 2017. Adsorption Mechanism of Fatty Acid on Apatite Surface and Application of Fatty Acid Collector in Phosphate Ore Flotation. Guangzhou. Chemical. Industry. 45(4), 8-11+22.
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- HE, D., XIE, Z., XIE, W., LIU, X., LI, H., WU, Y., HUQ, Y., 2018. Flotation performance of a new collophane reverse flotation collector. Minerals. & Metallurgical. Processing. 35(2), 98–108.
- HUANG, W., LIU, W., CHI, X., RAO, F., 2021. Study of combined collector in reverse flotation for magnesium removal of phosphate rock. Non-Metallic. Mines. (01), 56-58.
- LI, J., NIE, G., LI, J., ZHU, Z., WANG, Z., 2022. Flotation separation of quartz and dolomite from collophane using sodium n-dodecyl-β-amino propionate and its adsorption mechanism. Colloids. & Surfaces. A.: Phys. Eng. Asp. 641, N. PAG.
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- YU, J., GE, Y., GUO, X., GUO, W., 2016. The depression effect and mechanism of NSFC on dolomite in the flotation of phosphate ore. Separation. & Purification. Technology. 161, 88-95.
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- ZHANG, H., ZHOU, F., YU, H., LIU, M., 2021. Double roles of sodium hexametaphosphate in the flotation of dolomite from apatite. Colloids. & Surfaces. A.: Phys. Eng. Asp. 626, 127080.
- ZHANG, T., ZHANG, Q., MAO, S., AO, X., 2022. Interaction mechanism of dolomite and fatty acid collector in phosphoric acid system. Mining. and Metallurgical. Engineering. (04), 60-63.
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Uwagi
This work was financially supported by the Innovation Project of Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education (LCX2021005), Open Foundation of Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources (No.2018TP1002).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-702d4e8e-d409-4004-873c-4c7b99e596db