Effect of Variation of Alumina on the Microhardness of Iron Ore Sinter Phases

Moni SINHA; R. V RAMNA

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Effect of Variation of Alumina on the Microhardness of Iron Ore Sinter Phases

机译：氧化铝的变化对铁矿烧结相显微硬度的影响

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The productivity of blast furnace can be increased if a higher proportion of sinter is charged. Since the Indian sinter has higher amount of alumina (～2.5%) in comparison to sinter produced elsewhere (Al_2O_3 less than 2%), the proportion of sinter in the blast furnace burden cannot be exceeded beyond certain limit. Alumina also decreases the sinter quality in terms of its chemistry.rnA higher amount of alumina can be tolerated without significant reduction in strength, if the amount of FeO is high in sinter. This increases the coke rate during sintering and in the blast furnace.rnThe properties of melts formed in the flame front during iron ore sintering determine the structure of the ensuing sinter bonding phases. The study showed that phosphorus, silica, alumina and magnesia levels, sinter basicity and maximum sintering temperature influenced bonding phase structure.

机译：如果加入更高比例的烧结矿，可以提高高炉的生产率。与其他地方生产的烧结矿（Al_2O_3小于2％）相比，印度烧结矿的氧化铝含量更高（〜2.5％），因此不能超过高炉负荷中烧结矿的比例。氧化铝的化学性质也会降低烧结矿的质量。如果烧结矿中的FeO含量高，则可以容许更高数量的氧化铝而强度不会显着降低。这提高了烧结过程中和高炉中的焦炭率。在铁矿石烧结过程中火焰前沿形成的熔体性质决定了随后的烧结粘结相的结构。研究表明，磷，二氧化硅，氧化铝和氧化镁的含量，烧结碱度和最高烧结温度会影响粘结相结构。

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《ISIJ international》 |2009年第5期|719-721|共3页
作者
Moni SINHA; R. V RAMNA;
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作者单位

Research and Development, Tata Steel, Jamshedpur, Jharkhand Pin 831001, India;

Research and Development, Tata Steel, Jamshedpur, Jharkhand Pin 831001, India;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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正文语种 eng
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Effect of Variation of Alumina on the Microhardness of Iron Ore Sinter Phases

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