Laboratory Study on the Sintering Behavior of Zircon-Based Ladle Filler Sands
Laboratory Study on the Sintering Behavior of Zircon-Based Ladle Filler Sands
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锆英石钢包填料砂烧结行为的室内研究
DOI：
10.1002/srin.202100071
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发表时间：
2021
影响因子：
2.2
通讯作者：
Zhu Miaoyong
中科院分区：
文献类型：
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作者：
Deng Zhiyin;Yang Boran;Zhu Miaoyong
为了了解锆基填充砂的烧结行为，进行了实验室实验，并研究了含有不同Mn和Al含量的钢种的影响。结果表明，锆英石填充砂具有足够的烧结性能，不受钢的影响。莫来石颗粒与分解的锆英石颗粒之间的反应导致液相的形成，使得砂粒粘结。钢液（甚至液态纯铁）对锆英石填充砂的烧结有明显的影响。与铬铁矿填充砂类似，钢液中的Mn对锆英石填充砂的烧结的影响也是显著的，而Al（高达250ppm）的影响不是那么深刻，这是由于莫来石晶粒的存在。在大多数常规铝镇静钢牌号（Al ≤ 300 ppm）的情况下，锆英石基填充砂显示出足够的烧结效果，而由于严重的烧结结果，它们不适用于高Mn和高Al钢牌号。
To understand the sintering behavior of zircon‐based filler sands, laboratory experiments are conducted, and the effect of steel grades containing different contents of Mn and Al is studied. The results show that zircon filler sands have a sufficient sintering performance without the influence of steel. The reaction between the mullite grains and the decomposed zircon grains results in the formation of a liquid phase, making the sand grains bond. Liquid steel (even liquid pure iron) evidently impacts the sintering of zircon filler sands. Similar to chromite filler sands, the effect of Mn in liquid steel on the sintering of zircon filler sands is also remarkable, whereas the effect of Al (up to 250 ppm) is not so profound due to the existence of the mullite grains. In most cases of conventional Al‐killed steel grades (Al ≤ 300 ppm), zircon‐based filler sands show a sufficient sintering effect, whereas they are not suitable for high‐Mn and high‐Al steel grades due to the serious sintering result.