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近年来进口粉矿粒度组成呈现变粗的趋势,对烧结矿成品率和转鼓强度产生了不利影响。探讨了各种因素对进口粉矿粒度变粗后烧结的影响,结果表明:控制焦粉粒度0~3mm在85%左右、生石灰配比为3.0%~3.3%、降低石灰石中0~0.5mm部分比例(控制在40%~60%)、提高烧结料层厚度、配加1%的胺盐以及混合料水分优化等,有利于提高进口粉矿粒度变粗后的烧结成品率和改善烧结矿转鼓强度。
In recent years, the size of imported ore fines tends to become coarse, which has an adverse effect on the yield and drum strength of sinter. The effects of various factors on the sintering after the coarseness of the imported fines were studied were discussed. The results showed that the proportion of 0-3mm coke powder was about 85%, the proportion of quick lime was 3.0% -3.3%, and the proportion of 0-0.5mm in limestone was decreased (Controlled at 40% -60%), increasing the thickness of the sintering material layer, adding 1% of amine salt and optimizing the moisture content of the mixture is beneficial to improving the sintering yield rate and the sinter turn Drum intensity.