Mechanical degradation of steelmaking materials can have significant economic and environmental implications. Such degradation typically occurs as result of impacts during transportation and handling from their production site to the steelmaking furnace, in operations that include transfers in chutes, ship loading, stockpiling, reclaiming, wagon loading and discharging, etc. Predicting the extent of such degradation and attempting to prevent it, is worthwhile. Fortunately, mechanical degradation during such operations can now be predicted using different approaches, but a proper breakage model is required. The work presents results from single-particle breakage tests of iron ore lump, sinter, briquette, and pellet samples, besides coke, followed by fitting parameters of the Tavares UFRJ Breakage Model. These are then used to simulate degradation in a hypothetical handling circuit. Predictions demonstrate the high susceptibility of iron ore lump and briquette to fines generation, when compared to the other materials, and the occurrence of conditioning for briquettes and sinter, which is the increase in strength of particles surviving handling. Iron ore pellets and coke remained comparatively unaffected by the handling operations simulated, which is explained by their greater resistance to either body or surface breakage.

中文翻译：

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对炼钢材料的破损进行建模，以模拟处理过程中的机械降解


炼钢材料的机械降解可能会产生重大的经济和环境影响。这种降解通常是由于从生产现场到炼钢炉的运输和装卸过程中的影响而发生的，包括在溜槽中转移、装船、储存、回收、货车装卸等操作中。预测这种降解的程度和尝试阻止它是值得的。幸运的是，现在可以使用不同的方法来预测此类操作期间的机械退化，但需要适当的破损模型。这项工作介绍了除焦炭之外的铁矿石块、烧结矿、煤块和球团样品的单颗粒破碎测试结果，以及 Tavares UFRJ 破碎模型的拟合参数。然后将它们用于模拟假设处理电路中的退化。预测表明，与其他材料相比，铁矿石块和团块对细粉生成的敏感性很高，并且对团块和烧结矿进行调节，这是在处理过程中幸存的颗粒强度的增加。铁矿石球团和焦炭相对而言不受模拟处理操作的影响，这是因为它们对本体或表面破碎的抵抗力更强。