Super High Cleaning of Steel and Miniaturization of Inclusions by Deoxidation of Molten Iron with Magnesium Vapor In Situ Produced

与镁蒸汽一起生产的溶解铁的脱硫和脱氧化在原位通过铝氧化物减少镁氧化物是由组合高温和水模型实验研究的。去除和微型化的结果和形成机制的去除产品MgO已被调查。Furthermore，在去氟化过程中的结果燃烧，以及MgO的铝还原的机理也是研究的。一个用Mg蒸汽蒸汽机进行了熔化钢的脱氧的高温实验。去氧化物产品的行为已经被研究过了。目前的氧化过程后形成的含体是以直径约1微米的形状形成的。最大的去氧化产品被剥离的Ar+Mg泡沫。不同操作参数对脱氧率和包括行为的影响是明确的。钢中的含体的组成和分布通过观察和分析残留在该物质中的含体被清除。 ... More steel. 2.用铝和原位生产的镁蒸汽的组合去除氧化物的组合。Most of the inclusions had the composition of Al_2O_3 in their core and the composition of MgO or MgO·Al_2O_3 on their exterior shell。这些化合物的组成是难以聚合的，并且Al_2O_3簇的形成是预先确定的。水模型的实验是通过研究碰撞和附件来产生气泡和吸收包含的吸收，用slag对高速摄像机的辅助。各种操作参数对碰撞和附着的影响对上升的气泡是明确的。研究了在原位生产的Mg蒸汽机中进行降解过程中的结果。结果燃烧的机制已经被废除了。和CaO和活性炭粉上的添加剂被提议用于防止结果燃烧。Microscopic Observation of aluminothermic reduction of MgO showed that the reduction proceeded along with penetration of molten aluminum into MgO phase after breakup of the Al_2O_3 film on Al particles。Less（低）

Desulfurization and deoxidation of molten iron with magnesium vapor produced in situ by aluminothermic reduction of magnesium oxide were studied by combining high temperature and water model experiments. Removal and miniaturization results and formation mechanism of deoxidation product MgO were investigated. Furthermore, resulfurization in desulfurization process with Mg vapor and mechanism of aluminothermic reduction of MgO were also studied.1. High temperature experiment of deoxidation of molten steel with Mg vapor was conducted. Behavior of deoxidation product was studied. The inclusions formed after present dioxidation process was in spherical shape with a diameter of only about 1μm. Most of the deoxidation products were removed by rising Ar+Mg bubbles. The effects of various operating parameters on deoxidation rate and inclusion behavior were clarified. The composition and distribution of inclusion in steel were made clear by observation and analysis of inclusions remained in the … More steel.2. The combining deoxidation of molten steel with Al and in situ, produced Mg vapor was carried out. Most of the inclusions had the composition of Al_2O_3 in their core and the composition of MgO or MgO・Al_2O_3 on their exterior shell. These kinds of inclusions are difficult to aggregate and the formation of Al_2O_3 cluster is therefore prevented.3. The water model experiment was conducted to study collision and attachment of inclusions to rising bubbles and absorption of inclusions by slag with the aid of high speed camera. Effects of various operating parameters on collision and attachment of inclusions to the rising bubbles were clarified.4. Resulfurization in desulfurization process with in situ produced Mg vapor was studied. The mechanism of resulfurization was elucidated. And addition of CaO and the activated charcoal powders onto the melt surface were proposed to prevent resulfurization.5. Microscopic observation of aluminothermic reduction of MgO showed that the reduction proceeded along with penetration of molten aluminum into MgO phase after breakup of the Al_2O_3 film on Al particles. Less