使用基于颗粒的方法(烧结矿显微型)对铁矿石烧结矿进行地质冶金表征

IF 0.9 Q3 MINING & MINERAL PROCESSING
M. Peterson, J. Manuel
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引用次数: 1

摘要

利用不同颗粒织构类型的模态比例,即“烧结矿显微类型”(SM),计算了7种烧结矿样品的复合显微硬度(SCH)和复合断裂韧性(SCFT)。基于相关联、相织构和粒子织构定义了10个SM。每种显微类型的SCH/SCFT是通过定义理想成分和利用不同组织形式的普通烧结相的平均显微硬度/断裂韧性来计算的。将SCH和SCFT与烧结矿的冶金指标和主元素化学指标进行比较,结果表明前者具有较强的线性相关性。修改SM的理想组成来计算SCH/SCFT并没有显著改变与烧结矿RDI, RI, TI的相关性。通过对SM输入进行加权来计算SCH/SCFT,从而可变地改善了与烧结矿RDI、RI、TI的相关性。增加核/原生相SM的权重与RDI和RI的相关性最好,而增加键相SM的权重与TI的相关性最好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Using a particle-based approach (sinter microtypes) for the geometallurgical characterisation of iron ore sinter
ABSTRACT The composite microhardness (SCH) and composite fracture toughness (SCFT) of seven sinter samples were calculated utilising the modal proportion of distinct particle textural types, ‘sinter microtypes’ (SM). Ten SM were defined based on phase association, phase texture and particle texture. The SCH/SCFT of each microtype was calculated by defining an idealised composition and utilising the mean microhardness/fracture toughness of different textural forms of common sinter phases. Comparison of SCH and SCFT with sinter metallurgical indices and major element chemistry showed relatively stronger linear correlations with the latter. Modifying the idealised compositions of SM to calculate SCH/SCFT did not notably change correlations with sinter RDI, RI, TI. Calculating SCH/SCFT by weighting the input of SM variably improved correlations with sinter RDI, RI, TI. Providing additional weighting to nuclei/primary phase-bearing SM provided the best correlation with RDI and RI, whereas additional weighting to bonding phase-bearing SM provided the best correlation with TI.
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来源期刊
CiteScore
3.50
自引率
0.00%
发文量
6
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