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攀枝花白马精矿具有TFe高、V2O5高、SiO2低、TiO2低、粒度细的特点,其品质优于目前使用的攀精矿。用白马精矿替代攀精矿,可以提铁降硅、增钒降钛,亦可节约价格昂贵的进口矿。使用白马矿后烧结熔点下降,液相量增加,强度提高,烧结矿矿物组成与冶金性能均得到改善,烧结性能明显的优于攀精矿。通过对白马矿合理配矿的研究表明,采用20%白马矿替代攀精矿,并以降低进口矿为主而减少富矿粉配比,烧结矿成本最低,性能指标较好,为目前攀钢现场可行的实施方案。采用强化措施与工艺参数优化,可改善富矿粉减少后的烧结性能。在3台烧结机上配加15%白马矿的应用实践表明,降低原料成本显著,高炉冶炼技术指标改善,增铁节焦效果良好。 相似文献
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针对永锋钢铁公司烧结原料结构, 明确烧结目标, 进行烧结杯优化配矿实验, 以达到提高烧结矿成矿率、利用系数、成品矿品位、转鼓强度以及降低其返矿率的目的.实验运用扫描电镜观察成品矿形貌显微结构; 用成品烧结矿还原实验的检测数据, 探究优化配矿对成品烧结矿还原性能的影响; 并对比现场烧结配矿前、后的各项指标.实验结果表明:在现场烧结配矿条件下(在将巴混配比提高6 %, 燃料比降低至4 %, 烧结负压为11 kPa)通过优化配矿, 成品烧结矿转鼓强度可达到70.93 %, 成品率及利用系数分别为84.44 %、1.77 (t/m2h), 烧结矿品位为53.7 %, 还原度高达83.5 %, 可以保证高炉稳定生产. 相似文献
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通过分析不同原料的性质,找到了优化烧结配料的方法。在使用低SiO2、高Al2O3原料的条件下,通过综合平衡混匀矿粉的TFe、SiO2和粒度组成,掌握烧结与高炉生产的配矿规律,是可以实现高产、稳产、优质、低耗的生产目标的。 相似文献
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The co-operation action mechanism and model of photon-ion catalysis synergy material composed of thallium and valency-variable rare earth elements and semiconductor oxide were proposed. The radiation catalysis reactions of water and oxygen assisted by the synergy material that could largely increase electron, free radical and negative ion products were discussed. The applications of photon-ion catalysis synergy material in areas of air cleaning material, antibacterial material, healthy material and energy resource material were suggested. 相似文献
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充填胶凝材料的发展与应用 总被引:6,自引:0,他引:6
胶结材料是充填采矿技术中最为重要的因素,胶结材料的变化有时会引起采矿方法的变革;胶结剂作为胶结充填材料的主要材料之一,在矿山充填采矿工艺中占有重要地位.文中对主要的几种矿山充填胶凝材料(如高水固结材料、赤泥胶结材料、矿渣胶结材料、全砂土固结材料、矿山尾砂固结材料等)进行了详细阐述.胶凝材料将向缩短凝固时间、低成本、高强度、易输送、易生产、工艺简单等方向发展,胶凝材料具有广阔的研究、发展和应用前景. 相似文献
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Cu-W-Ni-C触头材料的研制 总被引:2,自引:0,他引:2
对Cu-W-Ni-C与Ag-ZnO_(10)触头材料的性能进行了对比和研究。在相对密度相同时,Cu-W-Ni-C材料的电阻率与Ag-ZnO_(10)材料的电阻率接近,而硬度高于Ag-ZnO_(10)材料的硬度。温升和通断能力试验结果表明;Cu-W-Ni-C材料在电力机车电器上完全可替代Ag-ZnO_(10)材料。 相似文献
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为了探索铝钛渣对镁质复合材料烧结性能的影响,提高镁质复合材料的使用性能,试验用电熔镁砂、高纯镁砂、氧化铝微粉和氧化铬微粉为主要原料制备镁质复合材料。用热膨胀仪对比烧前和烧后镁质复合材料的线膨胀率和线膨胀系数,结果表明,烧前镁质复合材料的线膨胀率和线膨胀系数为1100~1300℃,会出现较明显的增大趋势,烧后镁质复合材料的线膨胀率未出现显著增大的趋势,而线膨胀系数随着铝钛渣加入量的增大而逐渐减小。铝钛渣对镁质复合材料有促烧结作用,经1100和1500℃烧后的镁质复合材料体积密度和常温抗折强度随铝钛渣加入量增大而逐渐增大。 相似文献
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Calculating Method for Influence of Material Flow on Energy Consumption in Steel Manufacturing Process 总被引:2,自引:0,他引:2
From the viewpoint of systems energy conservation, the influences of material flow on its energy consumption in a steel manufacturing process is an important subject. The quantitative analysis of the relationship between material flow and the energy intensity is useful to save energy in steel industry. Based on the concept of standard material flow diagram, all possible situations of ferric material flow in steel manufacturing process are analyzed. The expressions of the influence of material flow deviated from standard material flow diagram on energy consumption are put forward. 相似文献
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Several studies have indicated that degradation of ultrahigh-molecular-weight polyethylene following gamma irradiation in air adversely affects the mechanical properties of the material; however, it is not known how this subsequently affects its wear rate. Wear studies have therefore been performed on three groups of ultrahigh-molecular-weight polyethylene; unirradiated material, recently irradiated material (aged for 2 months), and aged irradiated material (aged for 5 years). The aging took place in sterile packaging on the shelf. The wear studies were carried out on a tri-pin-on-disk wear tester, with a pin from each type of material being studied in each test. In each test the wear rate of the nonirradiated material was slightly lower than the 2-month-aged, irradiated material. The 5-year-aged, irradiated material had the highest wear rate, and this was significantly greater than that of the unirradiated material (P < .05). 相似文献
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