The of TISCO Yuanjiacun Mine is a large iron ore deposits ,the maintain reserves is over 13 billion tons. Deposit ore types can be divided into the oxidation of iron ore and native iron ore. Oxidation of iron ore can be divided into the quartz type mirror (red) iron ore type, amphibole type and conglomerate type; native of iron ore can be divided into the quartz type and amphibole type. Each ore based iron taste different, there are points of lean iron ore and sub-depleted iron ore. As the Yuanjiacun iron ore type is more, structure, structure complex and the various mineral disseminated granularity fine, cause great difficulty to the beneficiation process, resulting so far has not been a comprehensive development and utilization. Quartz and amphibole multi-element chemical analysis of the oxidation of iron ore and iron phase analysis results.
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Two oxidized ores of iron ore Yuanjiacun metallic minerals are mainly illusion of hematite semi martite, hematite, specularite magnetite, limonite, pyrite : gangue minerals are quartz, amphibole minerals (through idle stone, mafic amphibole, a small amount of iron amphibole) and calcite. The two oxidized ores are banded structure-based, there is a fine-grained gangue minerals embedded in the metallic minerals striped cloth, there is a fine-grained metallic minerals disseminated in a gangue mineral bands. The grain size of the metallic minerals and gangue minerals are very fine. Quartz-type ore metal mineral grain is more than 0.044 mm or less, a part of the very fine particle size in the following O.O1mm; the gangue minerals granularity thicker than the metallic minerals, and more, including a considerable number of particle size less than 0.05 mm in 0. 01mm below. Amphibole ore mineral grain is a little thicker than the quartz-type ore amphibole mineral fiber structure more, and the fiber diameter is usually only child micron to cause dissociation difficulties to the magnetic beneficiation.
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