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Thermodynamic analysis of separating lead and antimony in chloride system CHEN Jin-zhong(陈进中)1, CAO Hua-zhen(曹华珍)2, LI Bo(李 波)2, YUAN Hai-jun(袁海军)2, ZHENG Guo-qu(郑国渠)2, YANG Tian-zu(杨天足)1 1...; Abstract: In chloride system, thermodynamic analysis is a useful guide to separate lead and antimony as well as to understand the separation mechanism......
among transport properties of new-old composites, new, and old concretes was also discussed. Results indicate that the permeability and chloride diffusivity of new-old concrete composite system closely.... It is possible to design the tailor-made new-old concrete composite system for repair given the transport property.Key words:new-old concrete composite; chloride diffusivity; permeability; transport property......
Null 包大杰1 (1.上海柴油机厂,上海,200432) 摘要: 问:何谓钢铁中全碳量(总碳量)和游离碳?答:碳在钢,铁中主要以化合状态和游离状态存在.在钢中主要以铁的碳化物如:Fe3C,Fe23C6等以及与某些合金元素的碳化物如:Mn3C,WC,TiC,MoC,VC,Cr3C2,Cr6C2等形式存在,统称为化合碳,钢中很少有游离碳.在铁中碳除以化合碳存在外,还以游离状态(石墨碳)存在,而且是主要形式.但是在白口铁中则多以碳化铁(Fe3C)形式存在. [全文内容正在添加中] ......
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density; 5) The electrolytic cell (Fig.2). Fig.2 Electrical system for cuprous chloride solution electrolysis The electrolytic cell was a cylindrical form, constructed...Article ID: 1003-6326(2005)03-0706-05 Copper electrodeposition from cuprous chloride solutions containing lead, zinc or iron ions M.Tchoumou1, M.Roynette Ehics2 (1. Faculty of Science......
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J. Cent. South Univ. Technol. (2011) 18: 230-237 DOI: 10.1007/s11771-011-0684-8 Corrosion risk assessment of chloride-contaminated concrete structures using embeddable multi-cell sensor system... system that included a reference electrode, a chloride content sensor, a macrocell current unit and an electrical resistance measurement unit was developed. This system provided the following important......
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> 1 Introduction Hydrometallurgy with ammoniacal ammonium chloride as extracting system is a new developing field with many merits. Above all, NH3 and Cl- ions existing in the system have... be calculated as listed in Table 3. Table 3 Constants in Eqn.(6) for calculating species concentration in system of Au-NH3-NH4Cl-H2O The sum concentration of aurous, ammonia and chloride can be expressed......
that, 1) In the system, when the chloride ion con- centrations were 0.30, 0.54 and 0.78 g/L, respectively, the changing of the redox potential φ(vs SCE), pH value and [Fe2+] were almost consistent. Under... to a critical concentration of Cl- of 2.7 g/L. Therefore, in the production practice, monitoring of chloride ion concentration in oxidation system should be enhanced and the utilization of backwater......