论文部分内容阅读
使用新开发装置对高磷赤铁矿超细粉进行气基还原实验研究.该矿中P主要以磷灰石形式嵌布于鲕状赤铁矿和其他脉石颗粒之间,但Fe和P元素未处于化学结合状态.采用超级涡流磨技术将高磷赤铁矿磨成平均粒度为2μm的超细粉,实现Fe和P元素较好的解离.还原实验结果表明,使用新开发的还原装置实现了矿粉的高度还原;粒度对还原结果的影响最显著,超细矿粉(2μm)的还原度可达90%,较常规粒度矿粉(150μm)提高约30%;还原产物颗粒间并未发生烧结,采用简易磁选设备对还原产物进行磁选分离,初步实现矿粉中Fe与P元素分离和富集.
The gas-based reduction of high-phosphorus hematite ultrafine powder was carried out using a newly developed device, in which P mainly embedded in the form of apatite between oolitic hematite and other gangue particles, but Fe and P The element is not in the state of chemical combination.Microsoft eddy mill technology was used to grind high-phosphorous hematite into ultrafine powder with an average particle size of 2μm to achieve better dissociation of Fe and P. The results of reduction experiments showed that the newly developed reduction The reduction of the ultrafine ore powder (2μm) was up to 90%, which was about 30% higher than that of the conventional granule (150μm). The reduction products between the particles No sintering occurred. The products were separated by magnetic separation using simple magnetic separation equipment, and the separation and enrichment of Fe and P in the ore powder were achieved.