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Comparison of flotation performances of intruded and conventional coals in the absence of collectors

机译：在没有集热器的情况下压入煤和常规煤的浮选性能比较

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摘要

Magmatic intrusion creates many intruded coals whose properties are different from the conventional coals. It is well known that the surface hydrophobicity and wettability of coal surface are the primarily factors determining the flotation behavior of fine coal particles in coal preparation industry. This paper was to investigate the difference in the flotation behavior between intruded and conventional coals from Yongcheng Coalfield. Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR) were used to indicate the surface properties of intruded and conventional coals. The results showed that magmatic intrusion not only changed the functional groups on coal surface but also changed the pore structure of coal particles. The flotation performance of conventional coal was better than that of intruded coal in the absence of collectors. Magmatic intrusion has a negative effect on the natural floatability of coal particles. The natural floatability of coal particle is not only determined by the types of functional groups on coal surface but also affected by the surface morphology of coal particles. (C) 2015 Elsevier Ltd. All rights reserved.
机译：岩浆侵入产生了许多与常规煤性质不同的侵入煤。众所周知，煤表面的表面疏水性和润湿性是决定选煤行业细煤颗粒浮选行为的主要因素。本文旨在探讨永城煤田侵入煤与常规煤的浮选行为差异。 Brunauer-Emmett-Teller（BET），扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）用于指示侵入煤和常规煤的表面特性。结果表明，岩浆侵入不仅改变了煤表面的官能团，而且改变了煤颗粒的孔隙结构。在没有集热器的情况下，常规煤的浮选性能优于压入煤。岩浆侵入对煤颗粒的自然漂浮性具有负面影响。煤颗粒的自然漂浮性不仅取决于煤表面官能团的类型，还取决于煤颗粒的表面形态。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2016年第15期|186-190|共5页
  • 作者

    Xia Wencheng; Xie Guangyuan; Peng Yaoli;

  • 作者单位

    China Univ Min & Technol, Sch Chem Engn & Technol, Minist Educ, Key Lab Coal Proc & Efficient Utilizat, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Chem Engn & Technol, Minist Educ, Key Lab Coal Proc & Efficient Utilizat, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Chem Engn & Technol, Minist Educ, Key Lab Coal Proc & Efficient Utilizat, Xuzhou 221116, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Magmatic intrusion; Natural floatability; BET; SEM; FTIR;

    机译：岩浆侵入;自然漂浮性;BET;SEM;FTIR;

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