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。
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 H_2SO_4 and 0.5～1.5 g/L KClO_3. 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.
出处
《铀矿冶》
CAS
2004年第1期13-18,共6页
Uranium Mining and Metallurgy
关键词
铀矿
渗滤浸出
工业试验
水冶
酸耗
uranium ore
percolation leaching
commercial test
