Effect of different grinding aids on property of granulated blast furnace slag powder
Effect of different grinding aids on property of granulated blast furnace slag powder
复制标题
不同助磨剂对水化高炉矿渣微粉性能的影响
DOI：
10.1617/s11527-014-0450-0
复制
发表时间：
2015-12-01
影响因子：
3.8
通讯作者：
Yu, Long
中科院分区：
文献类型：
--
作者：
Li, Haoxin;Yang, Xiaojie;Yu, Long
本研究的目的是评估使用助磨剂（GA）在粒化高炉矿渣（GBFS）粉生产的可行性。采用不同的GA制备了GBFS粉体，并对其可磨性、流动性、反应性和水化特性进行了研究。实验结果表明，虽然改进的尺度不同，但所有的遗传算法都是非常有效的探索GBFS的可磨性。相应地，可以保留能量以将GBFS研磨至指定的比表面积。GA与TIPA的复合显著提高了GBFS粉末的流动性。不同水化龄期的GBFS粉末的反应性增量与GA的种类和含量密切相关。TIPA对GA的流动性、反应活性和CH含量的影响比TEA对GA的影响更显著。TEA和TIPA的复合使用更有利于GBFS的可磨性和流动性等性能的改善。此外，与GA硬化混合物提供了更致密的微观结构比对照。GA应用是一种可选择的低能耗生产GBFS粉末的技术，而GBFS粉末显示出更高的反应性和更好的流动性。
The objective of this study was to assess the feasibility of utilization of grinding aids (GA) in the granulated blast furnace slag (GBFS) powder production. The GBFS powders were prepared with different GA, and their grindabilities, fluidities, reactivities and hydration characteristics were investigated. The experimental results indicate that although the improvement scales are various, all GA are very effective to explore the GBFS grindability. The energy can be accordingly reserved to grind the GBFS to specified specific surface area. GA with TIPA notably enhances the GBFS powder fluidity. The reactivity increment of GBFS powder at different hydration age is strongly related to the GA type and content. GA with TIPA has the more remarkable influences on fluidity, reactivity and CH content than GA with TEA. Composite use of TEA and TIPA is more favorable to the improvements of some GBFS properties such as grindability and fluidity. Besides, hardened mixtures with GA are provided with denser microstructures than that of control. GA application is an optional technology with lower energy consumption to produce GBFS powder, whilst the GBFS powders display the higher reactivity and better fluidity.