Process Mineralogy and Beneficiability of Metamorphic Quartz Sandstone from Sanmenxia
In this paper,the process mineralogy of metamorphic quartz sandstone in Sanmenxia area is systematically studied,and the beneficia-bility test of ore is carried out.The results show that,the ore has a blastosand-like structure and a dense massive structure.The content of SiO2 in the ore is 97.60%,and the impurity elements are mainly aluminum,iron,potassium,calcium,magnesium and phosphorus.The target mineral is quartz,well rounded,secondary enlarged development(siliceous cementation),and the impurity minerals are feldspar,rutile,tourmaline and red limonite.The quartz particle size is 0.1-0.4 mm,and the cumulative distribution rate of+0.1 mm quartz is 94.89%;After the ore sample is purified by the grinding-classification-magnetic separation process,the prepared quartz sand meets the requirements of Class I excellent products for JC/T 529-1994 flat glass;after the grinding-classification-magnetic separation-flotation process,the quartz sand can meet the product requirements for QB/T 2196-1996 instru-ment glass;after the grinding-classification-magnetic separation-flotation-acid leaching process,SiO2 content increases to 99.91%,impurity elements Fe2O3 is 0.008 6%,Al2O3 is 0.045%,quartz sand can meet the standard for JC/T 2314-2015 photovoltaic glass silica raw materials.
quartzmetamorphic quartz sandstoneprocess mineralogybeneficiability test
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