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煅烧镁质料回转窑耐材选择及应用
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作者 高蕊 王明刚 +2 位作者 闫涛 张志豪 付卫 《山东冶金》 CAS 2021年第5期45-47,50,共4页
通过模拟煅烧镁质料回转窑使用温度及环境利用静态坩埚抗渣性试验方法,研究镁质料对耐材的侵蚀情况。通过对80%高铝砖的理化性能及抗镁质料侵蚀分析,确认煅烧镁质回转窑用耐火材料的主要性能。优化选择4种铝硅系耐火材料进行对比分析,... 通过模拟煅烧镁质料回转窑使用温度及环境利用静态坩埚抗渣性试验方法,研究镁质料对耐材的侵蚀情况。通过对80%高铝砖的理化性能及抗镁质料侵蚀分析,确认煅烧镁质回转窑用耐火材料的主要性能。优化选择4种铝硅系耐火材料进行对比分析,综合考虑使用性能及性价比,最终选择抗侵蚀性能良好、性价比优良的特种高铝砖进行优化开发并生产交付。至2021年5月客户已经正常使用900 d,对使用后的砖进行微观分析,镁质料对其没有出现任何的渗透反应,使用寿命预计可达到5 a以上,筒体表皮温度降低60℃左右,实现节能降耗,满足客户需求。 展开更多
关键词 镁质料 回转窑 特种高铝砖 抗侵蚀性
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钙镁改质料中碳的测定
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作者 徐建平 《耐火材料》 CAS 北大核心 1999年第2期116-117,共2页
钙镁改质料是近年来应用越来越广泛的一种炉渣改质材料。使用这种材料可使炼钢转炉的修补变得迅速、经济、操作简单。碳是这种材料中需要控制的一个重要成分。定碳的方法很多,主要有燃烧气体容量法、燃烧重量法、燃烧红外吸收法、烧减... 钙镁改质料是近年来应用越来越广泛的一种炉渣改质材料。使用这种材料可使炼钢转炉的修补变得迅速、经济、操作简单。碳是这种材料中需要控制的一个重要成分。定碳的方法很多,主要有燃烧气体容量法、燃烧重量法、燃烧红外吸收法、烧减失重法。燃烧法是利用CO2为测量信... 展开更多
关键词 质料 测定 炉渣改质 转炉 炼钢炉
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Influence of Composts on Agrochemical Properties of Soils of Zarafshan Valley, Salted with Magnesium Carbonates and Yield Capacity of Corn
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作者 Shohnazar Hazratqulov Farkhod Khoshimov 《Journal of Environmental Science and Engineering(A)》 2014年第6期297-304,共8页
Peculiar characteristics of soils of Zarafshan valley are salinity with carbonates. It is recommended to introduce large amount of manure or other organic fertilizers in these soils to improve soil reclamation. But cu... Peculiar characteristics of soils of Zarafshan valley are salinity with carbonates. It is recommended to introduce large amount of manure or other organic fertilizers in these soils to improve soil reclamation. But currently there is no possibility to collect so many organic fertilizers in Uzbekistan. That is why other ways of production of organic fertilizers for improving soil fertility were searched. In the experiment, the influence of composts was studied, which prepared from tobacco wastes and manure on agrochemical properties of soils of Zarafshan valley, and production of composts from these industrial wastes, two salted with magnesium carbonates and yield-capacity of com. With the problems that exist in Uzbekistan can be solved at once. These include problems of environmental contamination through wastes and ensuring with organic fertilizers in the irrigated soils. Introduction of composts in the doze of 30 t.ha1 separately and on the background of mineral-NPK (nitrogen, phosphorus and potassium) fertilizers increased the humus content, total NPK and mobile nutritious substances in soil. It is proved that composts, prepared from tobacco wastes with their effect on the yield capacity and quality ofcoru production, can successfully substitute manure. Composts positively influence on the balance of nutritious substances in the system of soil-corn. 展开更多
关键词 Tobacco wastes magnesium carbonate saline soils COMPOST corn.
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