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 s...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.展开更多
On the 18thMarch 1993 the Ministry of Geology and Mineral Resources declared that atShimian County,situated near the Dadu River,Sichuan Province,a primary ore of telluriumhas been discovered.This mineral,discovered by...On the 18thMarch 1993 the Ministry of Geology and Mineral Resources declared that atShimian County,situated near the Dadu River,Sichuan Province,a primary ore of telluriumhas been discovered.This mineral,discovered by geologists Yang Baichuan et al of Sichuan Nonferrous-rare-pre-cious Metal Corporation,is named for the tetradymite.It is indicated that the Te content of the展开更多
基金supported by the National Key Basic Research and Development Programme of China(No.2004CB619200)the National Science Foundation for Distinguished Young Scholars of China(No.50325415)the National Natural Science Foundation of China(No.50321402).
文摘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.
文摘On the 18thMarch 1993 the Ministry of Geology and Mineral Resources declared that atShimian County,situated near the Dadu River,Sichuan Province,a primary ore of telluriumhas been discovered.This mineral,discovered by geologists Yang Baichuan et al of Sichuan Nonferrous-rare-pre-cious Metal Corporation,is named for the tetradymite.It is indicated that the Te content of the
