共搜索到23685条信息,每页显示10条信息,共2369页。用时:0小时0分0秒453毫秒
of happening rate of acoustic emission in some lead and zinc mine reveal that the functional link neural network forecasting method based on fuzzy adaptive variable weight algorithm is higher than... precision about happening rate of acoustic emission in mine, the happening rate of acoustic emission in mine was forecasted based on functional link neural network due to fuzzy adaptive variable weight......
; Effect of loading rate on fracture... as follows. (1) When the loading rate is higher than 0.027 MPa·m1/2/s, the fracture toughness of Huanglong limestone increases markedly with increasing loading rate. However, when loading rate is lower......
that lead ion can decrease the activation energy E a of black patina formation from about 34?kJ/mol to about 21?kJ/mol, and accelerates the rate of black patina. Illumination decreases the E a by 0.5... zinc plating; lead ion; chromated; illumination; rate of black patina; Received: 2000-06-06 电镀锌钢板的黑变是严重影响钢板质量的一种镀锌层的初期腐蚀过程. 世界各大钢铁厂厂家对防止黑变的对策进行了系统的研究 [1,2,3,4......
analysis and energy-saving & emission reduction effects of lead metallurgy by advanced oxygen bottom-blowing process[J]. Energy Saving of Nonferrous Metallurgy, 2008(5): 15-19. [11] 李卫锋, 杨安国, 陈会成, 张...量为理论量的1.3倍. 关键词:高铅渣;液态还原;熔池熔炼;金属分布 中图分类号:TF812 文献标志码:A Distribution of valuable metals in liquid high lead slag during......
Enhanced 1.8 μm emission in Er3+/Tm3+ co-doped lead silicate glasses under different excitations for near infrared laser朱婷婷1,2,3,唐国武1,2,3,陈晓东1,2,3,孙敏1,2,3,钱奇1,2,3,杨中民1,2,31. State Key Laboratory...:A detailed study of the fluorescence emission properties and energy transfer mechanism in Er3+/Tm3+ co-doped lead silicate glasses was reported. Enhanced near......
Enhanced 1.8 μm emission in Er3+/Tm3+ co-doped lead silicate glasses under different excitations for near infrared laser朱婷婷1,2,3,唐国武1,2,3,陈晓东1,2,3,孙敏1,2,3,钱奇1,2,3,杨中民1,2,31. State Key Laboratory...:A detailed study of the fluorescence emission properties and energy transfer mechanism in Er3+/Tm3+ co-doped lead silicate glasses was reported. Enhanced near......
......
......
氰化尾渣综合回收工艺及实践路明福1,温建波1(1.山东省烟台市山东中矿集团有限公司)摘 要:采用优先混合浮选铅锌,硫酸脱氰活化,铜硫分离方法,实现了氰化尾渣中铜,铅,锌,金,银和氰化钠的综合回收.该工艺工业应用达到的技术指标为:铅锌混合精矿中铅品位为25.00%,锌品位为27.00%,铅回收率为65.60%,锌回收率为70.90%;铜精矿品位为15.25%,回收率75.48%;同时可副产金银.关键词:氰化尾渣; 浮选; 铅; 锌; 铜; 硫; 回收率......
J. Cent. South Univ. Technol. (2009) 16: 0444-0450 DOI: 10.1007/s11771-009-0075-6 Feasibility analysis for monitoring fatigue crack in hydraulic turbine blades using acoustic emission technique... in turbine blades using acoustic emission (AE) technique, the AE characteristics of fatigue crack growth were studied in the laboratory. And the characteristics were compared with those of background noise......