继续高分求翻译

来源:百度知道 编辑:UC知道 时间:2024/06/14 01:50:57
The dependence of silver recovery on the leaching time for concentrate from Casapalca is shown in Fig.1. The leaching of bas-receivedb sample of the concentrate with the ammonium thiosulfate afforded only 6% Ag into leach. The results for the same but the mechanochemically pretreated concentrate shows that the physico-chemical changes in the silver- bearing tetrahedrite have accelerated the process of thiosulfate leaching.
Mechanochemical pretreatment enables to achieve more than 90% recovery of silver in leachate even in 3 min. Recoveries of accompany- ing metals 27% Cu, 19% Pb, 5% Zn, 2.5% Fe, 0.15% Sb and 1.1% As were obtained under 15 min of leaching.
Fig. 2 shows the effect of leaching time on gold recovery for mechanically activated concentrate from Banska´ Hodrusˇa. In the bas-receivedb sample only 54% of gold and 52% of silver were recovered after 60 min leaching in ammonium thiosulfate. The r

银回收率与Casapalca精矿浸出时间的依存关系示于图1。 图1带有硫代硫酸铵的精矿“刚收到的”样品的浸出只能给予6%的银进入浸出物。同样的,但经过机械化学预处理的精矿得到的结果证明,在含银黝铜矿中的物理化学变化加速了硫代硫化盐法浸出的过程。
机械化学预处理,即使在三分钟时间内,在浸出液中也能达到90%以上的银的回收率。在15分钟浸出时,伴随金属的回收率达到铜,27%,铅,19%,锌,2.5%,铁,0.15%和砷,1.1%。
图2示出了浸出时间对来自Banska Hodrusa的经过机械活化的精矿金回收率的影响。 在刚收到的样品中,在硫代硫酸铵中经60分钟浸出后,只有54%的金和52%的银被回收。
经过机械预处理的精矿所得到的结果表明,含金矿物的物理化学变化引起了浸出过程的加速。 经过预处理的样品在45分钟之内,有可能达到金99%和银65%的回收率,在这种情况下伴随金属呈现的回收率为铜,27%,铅,17%,锌,2.5%,铁,1.3%。
铋回收率与伴随金属的回收率一起的依存关系在图3中表示,所针对的是经过机械活化的Atacocha精矿,以及采用了硫代硫酸钠作为浸出剂。即使在3分钟时间内,铋的回收率就可能达到99%,而在60分钟过程中,伴随金属的回收率为铜,22%,铅,5%,锌,1%,铁,0.5%,银,1%。
这些结果证明了,这些硫化物精矿的机械化学预处理以及机械活化能够带来浸出选择性的改善。