褐煤浮选现状及前景展望
首发时间:2010-12-23
摘要:褐煤是我国主要的能源之一,随着资源的日益枯竭,大力加强低阶煤的利用,例如褐煤的浮选,处理细粒褐煤,对我国能源高效利用有着重大的意义。本文叙述了褐煤浮选困难的原因,表面含氧基团较多,亲水性较强;国内外研究褐煤浮选所用的药剂制度,采用捕收剂+乳化剂+表面活性剂的混合药剂添加制度;pH对褐煤表面荷电的影响及不同类型的表面活性剂在褐煤表面的吸附情况;改变褐煤表面性质的造粒研究;并且对以后的褐煤浮选研究提出了建议和展望。
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Current Situation and Prospect of lignite flotation
Abstract:The lignite is one of the major energy in our country, witn the increasing depletion of resources ,enhance the use of low rank coal is of great significance ,such as to develop lignite flotation and processing fine-grained lignite. The reason of lignite hard flotation and the research results of lignite flotation were described, the lignite contain a great number of oxygens and have strong hydrophilic.Studies are taken on the lignite floation reagent system,collector+emulsifier+surfactant.The surface charge of lignite chnge with the pH chang and diffrernt surfactants adsorbed on lignite. Change the characters of lignite can be taken some measures to make new particles. Some suggestions and outlooks about the lignite flotation were also proposed.
Keywords: lignite surface modification flotation
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