【摘要】 提出了翁泉沟硼铁矿的综合利用流程:即矿石先经选矿而得硼精矿和硼铁混合精矿;硼精矿用碳碱法加工而得硼砂;硼铁混合精矿用硫酸溶解其中的硼镁石,在阻溶剂的作用下,磁铁矿溶解很少,酸解后进行固液分离,固相即为铁精矿,送去炼铁,酸解液除铁后,加入盐析剂氯化镁,在高温下蒸发析出硫酸镁,过滤后母液冷却至常温又析出硼酸,硼酸母液循环回到蒸发器,从而高回收率得到硫酸镁和硼酸。更多还原

【Abstract】 A Comprehensive utilization scheme for the ascharite-magnetite syngenetic mineral at Wengquan′gou have been laid out.By dressing,the ascharite concentrate and the ascharite-magnetite mixed concentrate are derived.The former is treated by soda-carbonation process to produce borax.The latter is treated by sulfuric acid to digest its ascharite content.In the presence of the retardant.only a very small portion of magnetite content is degested.After filtration,the solid cake being magnetite concentrate is sent to iron-smelting.The liquid phase after the removal of Fe²⁺ along with the salting-out agent MgCl₂ is evaporated at higher temperature to crystallize MgSO₄·H₂O,After filtration of MgSO₄·H₂O,the mother liquor is cooled down to crystallize H₃BO₃,The mother liquor is recycled to the evaporator,thus the higher recovery efficiency of H₃BO₃ and MgSO₄ might be achieved.更多还原