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Effect of MgO-Bearing Additive on Metallurgical Property of Pellets

机译：含MgO的添加剂对球团冶金性能的影响

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The caustic calcined magnesite is used as an additive to produce oxidized pellet.The charterers of caustic calcined magnesite are analyzed.The effects of its addition on metallurgical properties are also investigated including compressive strength (CS),the low-temperature reduction degradation index (RDI),and the reduction swelling index (RSI).It is found that the caustic calcined magnesite roasted at 850°C demonstrates better grindability,larger specific surface area,and higher reactive.The results shown that: 1) the addition of caustic calcined magnesite can improve the quality of the pellets.With the addition of caustic calcined magnesite content increases,the RDI and RSI of pellets decrease significantly; 2) when the content of caustic calcined magnesite is less than 2.0％ in pellets,the CS is lowered slightly,but still over 2689N/pellet,which can meet the requirement of blast furnace process.
机译：用苛性煅烧的菱镁矿作为添加剂生产氧化球团。分析了苛性煅烧的菱镁矿的承租人。还研究了其对冶金性能的影响，包括抗压强度（CS），低温还原降解指数（RDI）。结果表明：1）加入苛性煅烧菱镁矿后，焙烧温度为850°C的苛性煅烧菱镁矿表现出较好的可磨性，更大的比表面积和更高的反应活性。随着苛性煅烧菱镁矿含量的增加，球团的RDI和RSI显着降低。 2）当颗粒中苛性煅烧菱镁矿含量低于2.0％时，CS略有降低，但仍超过2689N /粒，可以满足高炉工艺要求。

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