基质组成对矾土－尖晶石浇注料性能的影响

采用磷酸盐微粉复合结合剂，以矾土熟料为骨料，通过强化基质，研制了矾土－尖晶石浇注料。基质中除一部分预合成尖晶石外，再加入适量的高纯镁砂细粉及Ａｌ２Ｏ３细粉可以改善材料的性能，加入少量的ＳｉＯ２微粉可提高施工性能，促进烧结，原料的纯度对材料性能的影响较大。     

Study on physicochemical properties of Al2O3SiCC castable for blast furnace

The physicochemical properties of a new Al₂O₃SiCC castable (ASCC) material were systematically investigated in this study. The results indicate that different heat treatment (HT) temperatures can lead to the formation of different phases, generating performance changes. A high HT temperature of 1773 K can create the mullite phase, serving as a strength-enhancer and shrinkage-compensator. The coexistence of carbon and corundum phases can effectively impede the corrosion caused by iron and slag, respectively, while the low carbon content in the ASCC can strengthen the iron attack resistance. The compressive strength of the ASCC showed a greater than 40% decrease after impurity element (K, Na, and Zn) corrosion experiments, which is greater than the change of the breaking strength. The larger atomic diameter of alkali metal could cause local relaxation and volume expansion of the aluminosilicate structure. The alkali metal scatters on the substrate; however, zinc exists in the form of ZnS and is primarily concentrated in the voids of the ASCC.     

不同结合系统刚玉-方镁石-尖晶石浇注料的性能

对比研究了水泥结合和水合氧化铝结合的刚玉 -方镁石 -尖晶石浇注料的性能。结果表明 :二者相比 ,水合氧化铝结合浇注料的需水量较大 ,流动性较差 ,烧结致密化温度高 ,在 1 5 5 0℃下烧结后的强度和致密度低 ,但其抗热震性能及抗渣性能较好。     

矾土尖晶石钢包浇注料的研制与应用

采用特级矾土熟料为骨科，天然出合成的镁铝尖晶石为部分基质，选用新型复合结合剂研制成矾土尖晶石质钢包浇注料．使用结果表明：一次性寿命较传统的铝镁浇注料提高８０％以上．     

炼铜转炉出铜沟用浇注料的研制与应用

研究了碳化硅、硅微粉及烧结剂加入量对高铝 -SiC质超低水泥浇注料性能的影响 ,并确定了浇注料的合理配方。经在出铜沟使用 ,取得了较好的使用效果。     

添加晶体纤维改善耐火浇注料的性能

探讨了添加晶体纤维改善耐火浇注料性能的机理和条件。通过研究高铝浇注料引入莫来石晶体纤维的性能变化及相应的ＳＥＭ显微结构，表明晶体纤维在适当条件下可显著改善耐火浇注料热处理后的抗折强度     

Al_2O_3－SiC－C质浇注料抗热震性和抗渣铁侵蚀性的研究

对新研制的Ａｌ２Ｏ３－ＳｉＣ－Ｃ质浇注料和现用出铁沟料的抗热震性和抗渣铁侵蚀性进行了研究、结果表明，该材料具有较高的抗渣铁侵蚀能力和较好的抗热震稳定性。调节Ｓｉ与Ｃ的比例可生成高强度、耐渣蚀的纤维状ＳｉＣ。     

Development of waste derived nano-lakargiite bonded high alumina refractory castable for high temperature applications

This work provides a new binder system, i.e., nano-lakargiite (NL) [CaZrO₃] for unshaped refractories. NL powder formulation is done through a green and facile route, i.e., solution mixing technique, which is easily capable of recycling the byproducts. The waste eggshells are practiced as a source of CaO for the preparation of NL. The characteristics such as differential thermal/thermogravimetric (DTA-TGA) analysis, X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM) of the synthesized NL powder are accomplished. The single phase orthorhombic crystal structure with the Pnma space group of nano CaZrO₃ (avg. crystallite size ∼19 nm) is attained at 1100 °C. High alumina castable specimens are formulated through the replacement of calcium aluminate cement (CAC) by the NL and heat treated at 1600 °C. The different physico-mechanical properties of the prepared castables are comprehensively investigated. The corrosion resistance in the molten glass at 1400 °C is also examined. The properties are also equated with the different advanced bonding systems of high alumina refractory castables. Significant progress in terms of densification, hot strength, and thermal shock resistance is achieved for the NL bonded refractory castables.     

钢包包底用刚玉-尖晶石-方镁石浇注料的研制与应用

以电熔白刚玉、镁铝尖晶石、镁砂、α-AlO微粉为主要原料,研究了镁砂微粉对刚玉-尖晶石浇注料物理性能、抗渣性能的影响,以及添加粗大刚玉颗粒对浇注料耐热剥落性能的影响。开发的刚玉-尖晶石-方镁石浇注料,在鞍山钢铁公司第三炼钢厂200t CAS-OB精炼包包底使用,寿命达165次。     

麦尔兹石灰窑悬挂缸耐火材料的技术改进

从结构和原材料分析华塑公司3座麦尔兹石灰窑悬挂缸浇注料脱落的原因,提出了技术改进方案,介绍了具体处理措施及改进后的效果。