多维度提升镍矿烧结转鼓强度实践

打开文本图片集

PRACTICEONMULTI-DIMENSIONALIMPROVEMENT OFTUMBLINGINDEX OFNICKEL ORE SINTERING

Zhu HeliWang CaijinZhang LangmingFeng Fei （Ironmaking PlantofLiuzhou Ironand Steel Zhongjin Stainless Steel Co.，Ltd.，Yulin5376Oo， China）

Abstract：Intheperiodofdepresionintheglobalstainlesssteelindustry，thesinteringsysteminfrontofnickel iron smelting hasbecometheforefrontreducing costsand increasing eficiency，anditsrawmaterialsarethekeytoeducing costs and increasing eficiency.Nickeloresintering，astheraw materialfornickelironsmel，hassignificantdiferences inmetallugical propertiesfromcommonoresintering，anditskeyindicator，the tumbling index，isthemostobvious. Nickel ore sintering to take intoaccount thecontentof nickel and chromium，aswellas factorssuch as grade and alkalinity.Coupled with the high aluminum content inlaterite nickelore，tumbling index is basicallyatalevel of less than 60% ，which is much lower than that of common ore sintering （around 78 % ）. In order to provide a good condition forthelong-term stable operation and cost reduction of blast furnace，our companyhas improved the tumbling index of sintering frommultiple dimensions，steam heating，fine management of raw materials，and appropriately increasing the alkalinitybyoxygen-rich ignition.Through our eforts，thetumbling index ofour company's nickel sintering hasbeen improved from 56% to 65% ，and the effect is obvious.

Keywords：Nickel iron smelting; Sintering drum index; Cost reduction and efficiency improvement

0前言

烧结矿作为高炉炼铁工序中不可或缺的重要原料之一，其品质的高低直接决定高炉冶炼工序的成效与经济效益。（剩余4267字）