The use of siderites in blast furnaces operated on unfluxed pellets
The use of siderites in blast furnaces operated on unfluxed pellets
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DOI：
10.1007/s11015-006-0100-z
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发表时间：
2006-07
期刊：
影响因子：
0.9
通讯作者：
S. A. Feshchenko;V. I. Pleshkov;K. N. Saveiko;I. N. Shishchuk;A. V. Buev
中科院分区：
文献类型：
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作者：
S. A. Feshchenko;V. I. Pleshkov;K. N. Saveiko;I. N. Shishchuk;A. V. Buev
Bakal菱铁矿是一种重要的铁矿石来源，可用于生产高质量的生铁和钢。它们在这方面的价值源于其化学成分的稳定性，有害杂质（硫，磷）的低含量，良好的还原性和焙烧状态下的良好强度。这些优点与围岩的有利组成相结合-其碱度（基于CaO + MgO/SiO2）高达2.6-使得可以将这些菱铁矿分类为可有效用于高炉的铁熔剂。焙烧菱铁矿精矿（RSC）可以有效地用于高炉炉料中，以生产不同等级的含锰铸铁，只要还使用不含熔剂的球团。平均而言，每吨生铁在炉料中加入10 kg RSC可使干料车焦炭消耗量减少0.6-1.5 kg/吨生铁，并通过减少所需的原熔剂量和增加炉料中熔剂部分的铁含量，使炉子生产率提高0.9-2.0吨/天。
Bakal siderites represent an important source of iron ore that can be used in the production of high-quality pig iron and steel. Their value in this regard stems from the stability of their chemical composition, low content of harmful impurities (sulfur, phosphorus), good reducibility, and good strength in the roasted state. These advantages, combined with the favorable composition of the country rock-which has a basicity (based on CaO + MgO/SiO2) of up to 2.6-makes it possible to classify these siderites as iron-fluxes that can be used effectively in a blast furnace. Roasted siderite concentrate (RSC) can be used efficiently in the blast-furnace charge to make different grades of manganese-bearing foundry iron as long as unfluxed pellets are also employed. On the average, the addition of 10 kg of RSC to the charge per ton of pig iron reduces the consumption of dry skip coke by 0.6–1.5 kg/ton pig and increases furnace productivity by 0.9–2.0 tons/day by decreasing the amount of raw flux needed and increasing the iron content of the fluxed part of the charge.