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首页> 外文会议>第七届国际耐火材料学术会议（ISR2016）论文集 >Comparison of Silica-sol and Low Cement Bonded Tabular Alumina and Spinel Castables
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Comparison of Silica-sol and Low Cement Bonded Tabular Alumina and Spinel Castables

机译：硅溶胶与低水泥粘结的板状氧化铝和尖晶石浇注料的比较

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摘要

Silica-sol bonded castables have been in the market for many years.It is known that silica sol bonded castables are easier to dry when compared to low cement castables.For this reason silica sol bonded castables experienced a stronger focus especially in the recent years.Time is an important factor in refractory installations.Therefore, a fast heat up of monolithic linings is often desired by the refractory users.This paper discusses the comparison between silica-sol bonded and low cement castables based on laboratory investigations.Three different kinds of silica-sol were tested in combination with three different matrix aluminas in a tabular alumina based test castable, and also in a spinel containing castable.The results show clear differences between sol and cement bonded castables, but also differences in castable behaviour for different sols.Also the matrix aluminas have a pronounced influence on the castable flow and strength properties, where especially the flow of sol bonded castables does not take advantage from reactive aluminas when compared to calcined alumina.The opposite applies for cement bonded castables.
机译：硅溶胶粘结的浇注料已经投放市场很多年了，众所周知，硅溶胶粘结的浇注料与低水泥浇注料相比更容易干燥，因此，尤其是近年来，硅溶胶粘结的浇注料受到了更大的关注。时间是耐火材料安装的重要因素，因此耐火材料用户经常需要快速加热整体衬砌。本文基于实验室研究，讨论了硅溶胶粘结和低水泥浇注料之间的比较。三种不同类型的硅石-sol在板状氧化铝基浇铸料中以及在含有尖晶石的浇铸料中与三种不同的基体氧化铝结合进行了测试，结果表明溶胶与水泥粘结的浇铸料之间存在明显差异，但不同溶胶的浇铸性能也有所差异。基体氧化铝对可浇铸的流动性和强度性能有显着影响，特别是溶胶结合的流与经煅烧的氧化铝相比，不稳定性不能从反应性氧化铝中获益。水泥粘结浇注料则相反。

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