| 铬渣烧结矿炼制含铬生铁工业化生产试验研究 |
| 摘要点击 738 全文点击 1955 投稿时间：1993-11-06 |
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| 中文关键词 铬渣烧结矿 高炉 炼铁 含铬生铁 工业化生产试验 |
| 英文关键词 chrome slag use of waste as a resource blast furnace iron smelting chrome pig iron |
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| 中文摘要 |
| 采用铬渣烧结矿作为熔剂,在30m3小高炉上进行了冶炼含铬生铁的工业化生产试验。铬渣中六价铬的还原率接近100%,总铬的金属化还原率大于94%;平均每吨产品铁吃渣量为2.298t,最高达2.785t.炼制含铅量大于10%的含铬生铁,需同时配入铬铁矿增铬。保持1480K以上的炉温,控制较低的碱度,配入辅料降低炉渣熔点,可显着改善炉渣的流动性,成功地实现渣、铁分离排放。监测了试验过程的二次污染,需控制高炉煤气放散以降低生产性降尘。 |
| 英文摘要 |
| A pilot study on the industrialized production of chrome pig iron was carried out in a small-sized blast furnace of 30m3 by using a sintered ore of chrome slag as flux. Cr (Ⅵ) in chrome slag was reduced at a rate of near 100% and more than 94% of toeal chromium were reduced metallizationally.The consumption of slag per tonne of product iron was 2.298t on average with the maximum of 2.785t. For smelting a chrome pig iron containing more than 10% Cr, it was necessary to simultaneously add chromite in order to increase the level of chromium. By keeping the furnace temperature at over 1480K,controlling the alkalinity at a lower level and adding the subsidiary burden to reduce the melting point of furnace slag,the mobility of furnace slag was significantly improved that resulted in the successful separation of iron from slag. The secondary pollution during the pilot study was monitored and it was found that it was necessary to control the dispersion of blast furnace gas in order to reduce the deposition of dust from the production process. |
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