Application of MLA Automatic Measurement Technology in Process Mineralogy Research of DRI

In order to accurately analyze the characteristics such as limonite mineral phase,embedded cloth,etc.,of the direct reduction product,MLA automatic detection technology was employed to study the process mineralogy.The main conclusions were followed:(1)The direct reduction of iron products mainly exists in elemental iron,secondly hematite and magnetite,and the partition ratio reached 98.26%,among which the elemental iron partition ratio was 88.19%.(2) There were 6 kinds of products whose contents were not fixed were generated in the direct reduction product (M-1 ~ M-6),in which products there were four kinds of mineral contain iron,but iron partition ratio was not high,only 1.74%;(3) the grain gradation distribution of elemental iron in the product was uneven,almost every fraction content was 10%,the highest was 23.63%;(4)the elemental iron,magnetite and M-4 were locked closely in the product,the proportion reached 21.76%and 21.76% respectively.According to the above conclusions,the iron was able to recover through grinding and low-intensity magnetic seperation,therefore the most important mineral processing and metallurgical technology research content will be improve the metallization rate of iron due to the low iron content.