Mineral Processing Study on the Iron Removal and Whitening of Feldspar for Ceramics in the Eastern Area of Hubei Province
To rationally and efficiently develop the feldspar ore resources for ceramics in the eastern area of Hubei province,the iron removal and whitening experimental study was conducted in this study based on the mineralogical analysis of the raw ore.The results show that the main useful minerals in the raw ore are plagioclase feldspar and potassium feldspar,and the gangue minerals are quartz,garnet,mica,magnetite,limonite and a small amount of hematite,among which the iron impurities are the main factors affecting the whiteness.Using"water washing for desliming plus magnetic separation for iron removal"joint process,we can obtain the feldspar concentrate with yield of 97.16%,the iron impurities reduce from 1.105%to 0.295%,and the whiteness increases from 46.11%to 64.92%,the content of Na2O and K2O slightly increases.All the indexes of feldspar concentrate products have reached the industry standard of QB/T 1636-2017"feldspar for domestic ceramic"for conforming product,realizing the high value-added utilization of this feldspar ore.
high iron content feldspar oreiron removal and whiteninghigh-gradient magnetic separationwater washingmineral processing technology
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