共查询到18条相似文献,搜索用时 109 毫秒
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较系统地阐述了水泥助磨剂的研究进展,包括水泥助磨剂的作用机理、效果表征、生产技术等;着重介绍了助磨剂作用机理的新观点、效果表征的新方法,指出了助磨剂生产技术的新动向。在此基础上探讨了水泥助磨剂的应用前景。 相似文献
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钛渣是一种常见的利用率较低的废渣,为了进一步开发新资源,实现钛渣在水泥混合材中的合理利用,对钛渣-水泥凝胶体系的微观水化情况进行了分析。通过球磨30min,球磨40min,加助磨剂A球磨40min和加助磨剂B球磨40min的4种钛渣-水泥凝胶体系实验,对其各龄期净浆试样进行了XRD、TG-DSC和SEM的测试,发现球磨时间较助磨剂对此体系的水化影响更大,这4种钛渣的水化程度由好到次依次为加助磨剂A球磨40min,球磨40min,加助磨剂B球磨40min和球磨30min的钛渣,同时,即使钛渣体系也存在二次水化反应,但由于钛渣中的活性Al2O3和活性SiO2的含量很少,其二次水化反应较弱。 相似文献
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分别掺加3种常用助磨剂组分三乙醇胺(TEA)、丙三醇(PG)和多聚磷酸钠(STPP)进行水泥粉磨试验,控制出磨水泥的比表面积在(375±5)m2/kg范围内,测试了各水泥试样的凝结时间和粒径分布等基本性能。选用常用缓凝剂组分葡萄糖酸钠(PN),探究了3种助磨剂组分对缓凝剂作用效果的影响,通过水化热分析、X射线衍射(XRD)分析和缓凝剂分子吸附量分析揭示了助磨剂组分对缓凝剂作用效果的影响机理。结果表明:TEA和PG对缓凝剂的作用效果存在明显的负面作用,而STPP显著改善了缓凝剂的作用效果;一方面,助磨剂通过自身的早强(或缓凝)作用影响缓凝剂的作用效果,另一方面,助磨剂组分也会影响缓凝剂分子的吸附量进而改变缓凝剂的作用效果。 相似文献
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由于攀钢高炉渣中含有20%以上的TiO2,使其利用受到很大限制,为使高钛矿渣作为掺合材料应用于混凝土,需首先了解高钛矿渣的粉磨特性。本文中研究了粉磨时间与高钛矿渣细度之间的关系,对比了高钛矿渣与普通矿渣易磨性并分析了助磨剂对高钛矿渣粉磨的影响。结果表明,高钛矿渣的易磨性较普通矿渣差,可使用助磨剂提高高钛矿渣的粉磨效率。 相似文献
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《Advanced Powder Technology》2022,33(3):103446
The control mechanism in the production of fine particles is important in dry grinding processes, which are popular in the grinding of some minerals. The behavior of the fine particles with each other and with the mill environment is complex and needs to be investigated in detail (on a micro-scale) in every application. One of the parameters controlling the fine particles in a mill is the use of the correct amount and type of grinding aid. Mechanisms of action must be understood well to develop grinding aids and fully utilize their positive effects. As a general explanation, with the use of grinding aids, the production tonnage can be increased at the desired product fineness, as well as achieving a finer product at the same production tonnage. However, it is necessary to know other mechanisms and effects to increase efficiency and correct use. The influence of grinding aids on the dry fine grinding of calcite using several analysis methods was revealed in the present study. Within the context, the results were assessed considering grinding performance (particle size distribution and size reduction ratio), product quality (color properties), flowability, adsorption properties (FTIR), and agglomeration behavior (SEM). Moreover, the tested effect of each grinding aid was discussed for each analysis, and the collected results were combined around a summary core diagram. 相似文献
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大型节能水泥粉磨技术的发展 总被引:1,自引:0,他引:1
归纳总结了当前国内外大型节能的水泥粉磨的发展动态 ,指出以辊压机或特殊结构的立磨作为预粉磨机与球磨机组成的水泥粉磨系统是当前的主要流行方式 ,另外用粉磨效率高的立磨或辊压机代替球磨机的水泥终粉磨方式在国外也有一定发展 ,但采用终粉磨系统要注意水泥质量问题 相似文献
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