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首页> 外文会议>TMS annual meeting exhibition;International symposium on high-temperature metallurgical processing >High Temperature Mineralization Mechanism of Granules During Iron Ore Sintering Process
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High Temperature Mineralization Mechanism of Granules During Iron Ore Sintering Process

机译：铁矿烧结过程中颗粒的高温矿化机理

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Mineralization during sintering is a process to make part of the raw material melt after serial complex chemical reactions at high temperature. However, high temperature mineralization behavior of the adhesion layer and nucleus particles in the granules during the sintering process has been studied. Research findings reveal that solid-phase reactions between iron ores and fluxes in adhesion layer occurred first, of which the product would induct the generation of the initial liquid phase. By the assimilation of the initial liquid phase, fluxes which served as nucleus particles in granules, such as limestone and dolomite, could dissolve in the liquid phase and extend its amount as increasing temperature, whereas iron ore nuclear particles remained as unfused ores for their insufficient mineralization. Therefore, the mineralization proceeding for sintering was achieved: the iron ores in fine fraction (-0.5 mm) reacted with all fractions of fluxes to form the melt zone, while the coarse iron ores (+0.5 mm) acted as unfused ores, which formed the final sinters together with the melt zone.
机译：烧结过程中的矿化作用是在高温下进行一系列复杂的化学反应后使部分原料熔化的过程。然而，已经研究了在烧结过程中颗粒中粘附层和核颗粒的高温矿化行为。研究发现表明，铁矿石和粘附层中的助熔剂之间首先发生固相反应，其中产物会诱发初始液相的产生。通过初始液相的同化，在颗粒中用作核颗粒的助熔剂（例如石灰石和白云石）可以溶解在液相中并随着温度的升高而扩展其量，而铁矿石核颗粒则由于未熔融而保持为未熔融矿石矿化。因此，实现了烧结的矿化过程：细颗粒（-0.5毫米）的铁矿石与所有助熔剂馏分反应形成熔融区，而粗颗粒铁矿石（+0.5毫米）充当未熔融的矿石，形成最后的烧结矿和熔体区。

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