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Weathered mine
Weathered ore iron ore pellet feed as of great importance in number, so get extra attention. Currently, some of the most famous weathered iron deposits are located in Canada, Western Africa, Brazil, Venezuela, India and Western Australia. The primary ore deposits belong to the Precambrian iron ore deposits, with magnetite and mirror iron ore as the main iron-bearing minerals. After weathering, the gangue ( quartz , silica) is decomposed. Due to the high solubility of gangue, most of the Hu is removed, so the iron content in the residual ore is increased, such as some parts of the Minas Gerais deposit in Brazil, with a gangue content of less than 1%.
A typical feature of weathered deposits is that the chemical composition is not uniform and fluctuates widely over a short distance. The ratio of various iron-bearing minerals such as specular iron ore, hematite, limonite and magnetite has a wide range of fluctuations. When such ore is used as a pellet raw material, the ore must be mixed and treated by the system. Otherwise, it will be very difficult in production operation.