共查询到18条相似文献,搜索用时 93 毫秒
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配用进口精矿粉的球团生产实践 总被引:1,自引:0,他引:1
分析了马钢配用进口铁精粉生产球团矿的情况及其技术质量指标的变化。生产实践表明,配用秘鲁精粉、巴西CVRD精粉、巴西卡拉加斯精粉均可生产出强度较高的球团矿,而配用PF精粉生产出的球团矿强度次之。 相似文献
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In order to obtain good sintering performance, it is important to understand sintering properties of iron ores. Sintering properties including chemical composition, granulation and high-temperature behaviors of ores from China, Brazil and Australia. Furthermore, several indices were defined to evaluate sintering properties of iron ores. The results show that: for chemical composition, Brazilian ores present high TFe, low SiO2, and low Al2O3 content. For granulation, particle diameter ratio of Brazilian ores are high; particle intermediate fraction of Chinese concentrates are low; and average particle size and clay type index of Australian ores are high. For high-temperature properties, ores from China, Brazil and Australia present different characteristics. Ores from different origins should be mixed together to obtain good high-temperature properties. According to the analysis of each ore′s sintering properties, an ore blending scheme (Chinese concentrates 20%+Brazilian ores 40%+Australian ores 40%) was suggested. Moreover, sinter pot test using blending mix was performed, and the results indicated that the ore blending scheme led to good sintering performance and sinter quality. 相似文献
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详细阐述了尖山精矿配加H.I矿粉的实验室试验、工业试验及高炉使用情况。试验表明,随着尖山精矿配比升高,烧结矿产量、品位和转鼓强度下降,冶金性能恶化。并根据试验有针对性地提出了降低尖山精矿的SiO2含量、配加部分低SiO2富矿粉和采取小球团烧结的措施。 相似文献
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Brazil is the second-largest producer of iron ore in the world. Brazilian richer superficial deposits are composed of brittle material with fine texture and significant amounts of fines are generated during mining and transport. Another type of ore found in this country is the itabirites that have lower iron contents. Beneficiation and concentration steps are required to prepare these materials for the pelletizing process. A general view of Brazilian types of iron ores, mines, and mining companies is given in this work. Special attention is given to pelletizing and the influence of mineralogical characteristics of different ores on the production and final properties of iron ore pellets. 相似文献
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介绍了对5种巴西MBR铁矿粉在韶钢烧结配矿条件下进行的铁水成本研究。试验表明,球团精矿可以用于烧结生产,烧结精粉和烧结标准粉的“吨铁水所耗烧结矿成本”指标较好。 相似文献