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: lead-flow analysis; optimization of lead consumption; eco-efficiency; lead recycling rate; lead emission rate; evaluation index  ... of the lead recycling rate (α), the lead emission rate (γ), and the production ratio (p) in the system. Further analysis shows that a higher recycling rate, a reduced lead emission rate, or a decreased......
is above 99% and its average crystallite size is about 42 nm. In this process, emission of lead vapour and SO2 cannot occur. The experimental results demonstrate the feasibility of realizing a green route... metallurgy to produce crude lead from lead concentrate and electrolysis of the crude lead to produce electrolytic lead, then chemical synthesis[3-5]. Thus, there is serious pollution due to the emission......
to slag (or the lead loss in the slag), and a decrease of the lead distribution to lead bullion (or the recovery rate of lead), as shown in Figs.2 and 3. 4.2 Effect of blast air The modeling... at constant flow rae of when blast air and industrial oxygen Fig.3 Effect of coke charge on distribution of lead in matte, lead bullion, slag and off-gas at constant flow rate blast air......
rate of lead is 99.9%, the dissolution rate of indium is 94.28%, the extraction rate of indium is 98.69%, the stripping rate of indium is almost 100%, and the impurity elements, such as Zn, Fe and Sn can...] and flame furnace process[11-12]. After electrolysis-extraction-cementation, the electrolytic dissolution rate of indium is 94% and the high purity lead is generated. Under the conditions that the vacuum......
to the total emission of 50.67% lead and 45.51% zinc. Key words: lead/zinc deposit; lead; zinc; cumulative production; emission flux 1 Introduction The nonferrous mining industry in China has been... emission to the environment [3-5]. According to a global inventory of trace element emissions by NRIAGU and PACYNA [6], about (357-857)×106 kg/a lead and (462-1 380)×106 kg/a zinc are released......
Monitoring damage evolution of steel strand using acoustic emission technique and rate process theoryDENG Yang(邓扬)1, 2, LIU Yang(刘扬)1, 2, FENG Dong-ming(冯东明)3(1. Key Laboratory for Safety Control... the damage evolution to acoustic emission parameters was proposed by incorporating the AE rate process theory. The AE monitoring results indicate that damages occur in both elastic and plastic phases......
电感耦合等离子体原子发射光谱法测定Sn-Ag-Cu系焊锡中铅和镉雷宏田1,王静1,毛亚蓉1(1.吉林省长春市第一汽车集团公司技术中心)摘 要:样品用盐酸,过氧化氢溶解,在少量硫酸存在下,以盐酸和氢溴酸挥锡,电感耦合等离子体原子发射光谱法测定铅和镉的含量.优化了仪器的工作参数,对溶样酸和锡基体等影响因素进行了试验.本法测铅和镉的线性范围分别为0.50~5.00μg/mL和0.050~0.50μg/mL,检出限分别为13.2μg/L和0.9μg/L,样品测定结果的相对标准偏差(n=6)均小于4%,用标准加入法测得回......
Dependence of the emission electric dipole line strength of Eu~(3+) on the composition of lead borate glasses DUAN Changkui1,JIANG Sha1,LIU Ziyi1,JIA Guohua2 (1.College of Mathematics and Physics,Chongqing University of Post and Telecommunications,Chongqing 600065,China;2.Department of Biology and Chemistry,City University of Hong Kong,Kowloon,Hong Kong SAR,China) Abstract:Lead borate glasses......
Spontaneous emission in the ellipsoidal nanocrystals K.K.Pukhov1 (1.General Physics Institute,Russian Academy of Sciences,38 Vavilov Str.Bld D,Moscow,119991,Russia) Abstract:The equation was presented for the spontaneous emission rate Anano of the two-level optical centers in the subwavelength ellipsoidal nanocrystals embedded in a dielectric medium.An important result was that the ratio Anano......
Behavior of silver and lead in selective chlorination leaching process of gold-antimony alloy LIU Wei-feng(刘伟锋), YANG Tian-zu(杨天足), XIA Xing(夏 星) School of Metallurgical Science...; Abstract: The behavior of silver and lead in the selective chlorination leaching process of gold-antimony......