共搜索到5216条信息，每页显示10条信息，共522页。用时：0小时0分0秒331毫秒
the by-products, and evident environmental pollution etc [1,2]. Vacuum distillation is regarded as one of the most effective and environment-friendly methods for metal separation and purification [3.... It is more viable than time consuming crystallization, in terms of higher purification range and yield reached in less time in vacuum distillation [6]. Besides, it has many advantages, such as high recovery......
Trans. Nonferrous Met. Soc. China 22(2012) 958-963 Si purification by solidification of Al-Si melt with super gravity LI Jing-wei1, GUO Zhan-cheng1, TANG Hui-qing1, WANG Zhi2, SUN Shi-tong1 1. State..., Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China Received 1 April 2011; accepted 19 November 2011 Abstract: The investigation on purification of metallurgical grade......
development to meet the stringent environmental regulations [21]. The proposed liquid metal extraction-vacuum distillation method (LME-VD) consists of two simple steps: extraction and vacuum distillation [22]. The extraction step is simple dissolution in which the solid metals dissolve into the molten metal without generating any toxic waste and/or waste solutions. In the subsequent vacuum distillation......
Trans. Nonferrous Met. Soc. China 24(2014) 1946-1950 Thermodynamics of removing impurities from crude lead by vacuum distillation refining Xiang-feng KONG1,2, Bin YANG1,2, Heng XIONG1,2, Ling-xin... to remove impurities from crude lead by vacuum distillation. The thermodynamics on vacuum distillation refining process of crude lead was studied by means of saturated vapor pressure of main......
Acetylene Vacuum Carburizing Hitoshi Iwata1 (1.JH CORPORATION, Aichi, Japan) 摘要:Almost 30 years has passed since the publication of materials on vacuum carburizing technology, and is attracting... practical mass production furnaces are used in production lines, in Japan and abroad. At this time, we will report summary of the present acetylene vacuum carbufizing process and the actual results obtained......
......
Vacuum Furnace - Integrated "Sub zero" Treatment B.Zieger1,Hubert Schulte1 (1.SCHMETZ GmbH, Menden, Germany) 摘要:The vacuum heat treatment with overpressure gas quenching is more and more accepted... chamber and "sub zero" systems lead towards an oxidation free and low distortion vacuum heat treatment for a broad range of parts and materials. Short and energy saving processes guarantee a high......
J. Cent. South Univ. Technol. (2009) 16: 0552-0557 DOI: 10.1007/s11771-009-0092-5 Purification and characterization of extracellular chitinase from a novel strain Aspergillus fumigatus CS-01... to Aspergillus fumigatus. Production of the chitinase is regulated by a inducible way and the maximum activity appears at 36 h in colloidal chitin culture. Purification of the chitinase is carried out......
by vacuum distillation LI Liang1, 3, LIU Da-chun1, 2, 3, YANG Bin1, 3, XU Bao-qiang1, 3, DAI Yong-nian1, 2, 3, ZHOU Hou-jun1, 2 (1. National Engineering Laboratory for Vacuum Metallurgy, Kunming... from silver-contained lead-antimony multi-component alloys was investigated by vacuum distillation process for the enrichment of silver under the condition of medium vacuum. The effects of distillation......
J. Cent. South Univ. (2016) 23: 750-756 DOI: 10.1007/s11771-016-3120-2 Laboratory investigation of axisymmetric single vacuum well point VU Van-tuan(武文俊)1, 2, YAO Lei-hua(姚磊华)1, WEI Ying-jie(魏英杰)1 1...;Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Vacuum well point is a new but faint soft ground treatment method. This work focuses on the consolidation behavior......
