赖子球
,
曾斌
,
余攀
,
蓝金莲
黄金
doi:10.11792/hj20140618
采用焙烧-硫酸浸出-氰化浸出工艺，从某复杂工业废渣中提取银。通过试验考察了焙烧气氛、添加剂种类和加入量、焙烧温度、焙烧时间等预处理因素对银浸出率的影响。试验结果表明：优化焙烧预处理条件为富氧气氛、温度903 K、焙烧时间3 h、添加剂硫酸钠加入量3％；焙砂经酸浸-氰化浸出后，银的提取率为78．41％；废渣中银质量分数由原来的0．049％降低至0．0145％。
关键词:
工业废渣
,
银
,
焙烧
,
工艺
,
浸出率
A.X. Wu
,
Y. Xi
,
B.H. Yang
,
X.S. Chen
,
H.C. Jiang
,
null
,
null
,
null
,
null
,
null
金属学报(英文版)
A model GM (grey model) (1,1) for forecasting the rate of copper extraction during the bioleaching of primary sulphide ore was
established on the basis of the mathematical theory and the modeling process of grey system theory. It was used for forecasting the rate of copper extraction from the primary sulfide ore during a laboratory microbial column leaching experiment. The
precision of the forecasted results were examined and modified via "posterior variance examination". The results show that the
forecasted values coincide with the experimental values. GM (1,1) model has high forecast accuracy; and it is suitable for
simulation control and prediction analysis of the original data series of the processes that have grey characteristics, such as
mining, metallurgical and mineral processing, etc. The leaching rate of such copper sulphide ore is low. The grey forecasting
result indicates that the rate of copper extraction is approximately 20% even after leaching for six months.
关键词:
primary copper sulfide ore
,
null
,
null
