Abstract
As high-grade refractories raw material,kyanite is widely used and the market demand is increasingly greater. The kyanite in Hebei is complicated,main chemical composition is SiO252.87%、A120321.14%. The result of investigation on mineral processing technology show that desliming has a great influence on kyanite, especially acid process, the suitable lower limit particle size for desliming is 20μm. Magnetic separation process may remove iron-bearing minerals,and the iron removal rate is 87.78%.The optimum condition for magnetic separation is magnetic field conditions 1.0T. Base on the research, we can get concentrate with a grade of A120358.37% and a recovery of A120356.02% if we adopt magnetic separation and flotation technology.
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