【摘要】 硅线石用途广泛,也是高级耐火材料的重要原料。在综合分析国内外硅线石选矿的特点之后,针对河北灵寿硅线石制定了弱磁—浮选—强磁的流程。在碱性介质中直接浮选硅线石,打破了国外要预先脱泥的惯例。文章介绍了小试、扩试、工业试验生产的情况,试生产获得硅线石精矿含Al₂O₃品位55.52％,收率58.49％。对1.5万t/a的选矿厂初估年盈利近400万元。更多还原

【Abstract】 ’, Sillimanite is widely used as an important material for high-grade refractory products. A flowsheet of low-intensity magnetic separation-flotation - high-intensity magnetic separation has been developed for sillimanite ores from Lingshou Mine in Hebei Province. Direct flotation of sillimanite in alkaline medium breaks the usual practice of necessity of pre-desliming operation. The performance of tests in bench .pilot and commercial scales are described with their resultant concentrates containing 55. 52% of Al2O3 and the recovery of 58. 49%. It can earn a 15000t/a processing plant approximately 4 million Yuan in profit.更多还原