Exploring the effect of sodium hexametaphosphate in coal slime flotation

• Autorzy: Lu Tianshen , Deng Zhengbin , Tang Yun , Tang Haiwen

Identyfikatory

DOI

10.37190/ppmp/162075

• Języki publikacji: EN

Abstrakty

EN

In this paper, the influence of sodium hexametaphosphate (SHMP) in coal slime flotation was studied, and the interaction between SHMP and coal slime flotation particles was revealed through XRD test, contact angle measurement, zeta potential test, scanning electron microscopy analysis, XPS analysis, and DLVO theoretical calculation. The experimental results show that when the dosage of SHMP is 1500 g/t, the recovery rate of clean coal combustibles increases by 9.61 %. SHMP reduces the hydrophobicity of clay minerals (kaolinite) in coal slime flotation and also enhances the dispersibility of coal slime particle. Scanning electron microscopy and energy dispersive analysis showed that SHMP reduced the number of clay particles (kaolinite) on the coal surface, thereby reducing the ash content of the clean coal. In this paper, SHMP is mainly used to modify the surface of kaolinite so as to reduce the hydrophobicity of the mineral, that is, to improve the recovery rate of clean coal combustibles in coal slime flotation.

Słowa kluczowe

EN

sodium hexametaphosphate; coal slime; flotation; DLVO

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2023
• Tom: Vol. 59, iss. 1
• Strony: art. no. 162075
• Opis fizyczny: Bibliogr. 40 poz., rys., tab., wykr.

Twórcy

autor

Lu Tianshen

• College of Mining, Guizhou University, Guiyang 550025, Guizhou, China

autor

Deng Zhengbin

• College of Mining, Guizhou University, Guiyang 550025, Guizhou, China
• National &Local Joint Laboratory of Engineering for Efficient Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, Guizhou, China
• Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources, Guiyang 550025, Guizhou, China

autor

Tang Yun

• College of Mining, Guizhou University, Guiyang 550025, Guizhou, China
• National &Local Joint Laboratory of Engineering for Efficient Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, Guizhou, China
• Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources, Guiyang 550025, Guizhou, China

autor

Tang Haiwen

• College of Mining, Guizhou University, Guiyang 550025, Guizhou, China

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Uwagi

The authors acknowledge financial supports from the Cultivation project of Guizhou University (No.[2020]13) and National Natural Science Foundation of China (51864010 ).