【摘要】 用抚州铀矿 3个矿点的混合矿石 2 30 0t进行了串联渗滤浸出工业性试验。矿石平均品位 0 5 4 0 % ,破碎到 <5mm并将 <0 15mm的矿泥分离后用 10～ 4 0 g/L硫酸溶液作溶浸剂、氯酸钾 (0 5～ 1 5g/L)作氧化剂进行渗滤浸出。经过平均 6 5d的浸出 ,渣计浸出率平均为 92 0 5 % ,酸用量 (与矿石质量比 ) 11 7% ,氧化剂用量 (与矿石质量比 ) 0 38% ,矿堆渗透性始终保持良好。试验结果表明 ,与常规水冶流程相比 ,酸耗可降低约2 0 % ,能耗降低 5 0 %以上。还讨论了浸出过程中结垢的成因和防治方法 ,并对P、F等化学元素对矿石浸出和浸出液处理的影响从理论上进行了初步探讨更多还原

【Abstract】 A serial percolation leaching test was conducted using 2 300 t uranium ore of Fuzhou Uranium Mine. The ore was crushed to <5mm with removal of the <0.15 mm fraction, and then leached with 10～40 g/L H₂SO₄ and 0.5～1.5 g/L KClO₃. Test results show that good permeability has been maintained and 92.05% of uranium extraction is achieved after 65 day leaching. The acid usage, 11.7%, and energy consumption decrease by 20% and 50% respectively compared with the conventional leaching process. The formation mechanism and prevention and treatment of scaling during leaching are investigated. Influences of F and P on uranium leaching and consequent recovery from leach liquor are also discussed.更多还原