检索结果-南通市图书馆

Recent progress in upgrading metallurgical-grade silicon to solar-grade silicon via pyrometallurgical routes

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2022年第4期29卷 767-782页

作者： Yun Lei Xiaodong Ma Ye Wang Zhiyuan Chen Yongsheng Ren Wenhui Ma Kazuki Morita Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Sustainable Minerals Institute The University of QueenslandSt Lucia 4072QLDAustralia School of Chemical Engineering Sichuan UniversityChengdu 610065China Separation and Conversion Technology Flemish Institute for Technological ResearchMol 2400Belgium Department of Materials Engineering Graduate School of EngineeringThe University of TokyoTokyo 113-8656Japan

Si-based photovoltaic solar power has been rapidly developed as a renewable and green energy *** widespread use of Sibased solar cells requires large amounts of solar-grade Si(SoG-Si)to manufacture Si *** routes,mainly the modified Siemens process,have dominated the preparation of polycrystalline SoG-Si;however,traditional chemical techniques employ a series of complex chemical reactions involving various corrosive and hazardous *** addition,large amounts of complex waste solar cells and Si kerf slurry waste gradually accumulate and are difficult to recycle using these *** methods are required to meet the demand for SoGSi preparation and Si waste *** metallurgical route shows promise but is hindered by the problem of eliminating B and P from metallurgical-grade Si(MG-Si).Various pyrometallurgical treatments have been proposed to enhance the removal of B and P from *** article reviews Si refining with slag treatment,chlorination,vacuum evaporation,and solvent refining,and summarizes and discusses the basic principles and recent representative studies of the four *** these,solvent refining is the most promising and environmentally friendly approach for obtaining low-cost SoG-Si and is a popular research ***,a simple and green approach,i.e.,a combination of solvent refining,slag treatment,or vacuum directional solidification,is proposed for low-cost SoG-Si preparation using MG-Si or Si wastes as raw materials.

关键词： silicon refining solar-grade silicon solvent refining vacuum evaporation slag treatment Si kerf slurry waste

Boron removal from metallurgical silicon using CaO-SiO_2-CaF_2 slags

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2011年第6期21卷 1402-1406页

作者：蔡靖李锦堂陈文辉陈朝罗学涛厦门大学材料学院材料科学与工程系厦门361005 厦门大学物理与机电工程学院物理学系厦门361005

The removal of boron from metallurgical silicon in slag system of CaO-SiO2-10%CaF2 was investigated. The partition coefficient of boron （LB） between slag and silicon phase was studied under different conditions of slag basicity （CaO/SiO2 ratio）, temperature, mass ratio of slag to silicon and gas blowing. The results show that LB has a maximum value of 4.61 when the CaO/SiO2 mass ratio is around 2 at l 873 K. The logarithm of LB is linear to the reciprocal of temperatures in the range of 1 773-1 973 K. LB increases with the increase of mass ratio of slag to silicon, but it does not increase markedly when the ratio excesses 3. Gas blowing can sionificantlv increase the removal of boron, and LR increases with the increase of water vapor content.

关键词： solar grade silicon slag treatment boron removal partition coefficient

The development of slag processing technology and its impact on energy-saving and emission reduction in the metallurgical industry

在线全文

学校读者我要写书评

暂无评论

Baosteel Technical Research 2009年第4期3卷 3-8页

作者： CUI Jian XIAO Yongli LI Yongqian LIU Yin Ningbo Iron ＆ Steel Co. Ltd. Baosteel Group CorporationNingbo 315000China Environment ＆ Resources Division Research InstituteBaoshan Iron ＆ Steel Co.Ltd. Shanghai 201900China

This study provides an overview of the production and classification of metallurgical slag and its impact on energy-saving and emission reduction in the metallurgical industry and an analysis of the impact of key factors on slag processing technology, including a brief account of blast furnace（BF） slag processing and applications with a focus on the steel slag disposal processes and the features of some typical processes. In view of the characteristics of the basic oxygen furnace （BOF） slag and the technical difficulties faced by the traditional processes,it describes the principle,features and technical advantages of the Baosteel short-flow （BSSF） steel slag treatment process developed by Baosteel. The thinking and outlook on the direction of the development of the metallurgical slag processing process are stated.

关键词： slag treatment BSSF energy-saving and emission reduction molten slag

Application of the BSSF molten steel slag processing technology in POSCO

在线全文

学校读者我要写书评

暂无评论

Baosteel Technical Research 2011年第2期5卷 20-23页

作者： LIU Yin WANG Xinbing Ironmaking Resources ＆ Environment Division Research Institute Baosteel Iron ＆ Steel Co. Ltd. Shanghai 201900 China Shanghai Baosteel Engineering ＆ Technology Co. Ltd. Shanghai 201900 China

This study describes an overview of the POSCO＇ s Baosteel＇ s short-flow （BSSF） slag processing project, including process flow, process set-up, equipment composition, auxiliary facilities and relevant parameters, ... 详细信息

关键词： Baosteel' s short-flow (BSSF) rotary drum slag treatment process layout application