不同粒径水冷铜渣的组织与热性能

矿冶工程 Pub Date : 2019-01-01 DOI:10.12677/meng.2019.62017

A. Mai, J. Hou, S. Li, Wan-ming Lin, Xiaoyu Meng

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引用次数: 0

摘要

铜渣是铜冶炼过程中产生的固体废弃物，其中含有大量可利用资源。为了从铜渣中分离和提取铁等有价成分，采用化学分析、x射线衍射、金相分析和热重分析等方法，研究了铜渣粒度对铜渣相组成和金相组织的影响。结果表明:铜渣中Fe2O3和TiO2含量较高，有害杂质S含量较高，流动性好;粒径主要分布在0.425 mm ~ 4mm之间。铜渣中主要存在铁长石(Fe2SiO4)、赤铁矿(Fe2O3)、磁铁矿(Fe3O4)和无定形脉石玻璃。随着焙烧温度的升高，铜渣中的铁矾石被氧化为赤铁矿和无定形二氧化硅，随后转变为磁铁矿的晶型(Fe3O4→γ-Fe2O3→α-Fe2O3)。

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Microstructure and Thermal Properties of Water-Cooled Copper Slag with Different Particle Sizes

Copper slag is a solid waste produced in the process of smelting copper, which contains a large number of available resources. In order to separate and extract iron and other valuable components from copper slag, the effects of particle size of copper slag on phase composition and metallographic structure were studied by chemical analysis, X-ray diffraction, metallographic and thermogravimetric methods. The results show that copper slag contains more Fe2O3 and TiO2, and the harmful impurities have higher S content and good fluidity. The particle size is mostly distributed between 0.425 mm and 4 mm. In the copper slag, fayalite (Fe2SiO4), hematite (Fe2O3), magnetite (Fe3O4) and amorphous gangue glass were present. As the calcination temperature increases, the fayalite in the copper slag is oxidized to hematite and amorphous silica, followed by the transformation of the crystal form of magnetite (Fe3O4→ γ-Fe2O3→ α-Fe2O3).

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来源期刊

矿冶工程

自引率

0.00%

发文量

5744

期刊介绍： Mining and Metallurgical Engineering magazine was founded in 1981, is now a bimonthly magazine for domestic and international public circulation, by the Changsha Institute of Mining and Metallurgy Research Limited Liability Company and the China Institute of Metals jointly sponsored, using ‘actively promote the reporting of mining and metallurgy industry new theories, new technologies, new techniques, new equipment, and strive to promote the technical progress of the industry’ as the purpose of the publication. The main columns are Mining, Mineral Processing, Metallurgy, Materials, Mining Economy and Management, etc. It focuses on reporting the cutting-edge dynamics of the mining and metallurgy industry, exchanging mining and metallurgy scientific and technological achievements, technical experience, transmitting mining and metallurgy scientific and technological information, and playing the role of a bridge and a link to turn scientific research achievements into productive forces. The quality of papers in this journal is high, among which the ratio of papers of various fund projects reaches more than 60%. The total score of the comprehensive evaluation of the journal is among the best in the national metallurgical engineering technology core journals. Mining and Metallurgical Engineering is the first batch of journals awarded as ‘China Journal Square Double Effect Journal’ by the Ministry of Science and Technology and the General Administration of Press and Publication of the People's Republic of China, and it is the national Chinese core journal, Chinese scientific and technological core journal, and the core academic journal of China Science Evaluation and Research Centre, It is a national Chinese core journal, Chinese science and technology core journal, core academic journal of China Science Evaluation and Research Centre, excellent journal of China Society for Metals, excellent publication of China Nonferrous Metals, double top ten journals of Hunan Province, top ten scientific and technological journals of Hunan Province, excellent publication of Hunan Province, selected journal of Hunan Province to cultivate world-class Hunan version of the scientific and technological journals construction project echelon journals building projects, world nonferrous metals high-quality scientific and technological journals classification catalogue of T2 level journals, high-quality scientific and technological journals classification catalogue of Metallurgical Engineering and Technology T3 level journals, China Knowledge Network Academic Journal It has been selected as one of the journals in Q1 area of China Knowledge Network Academic Journals Subject Influence, and selected in World Journal Clout Index (WJCI) report; it has been included in the full text of China Knowledge Network (CKN), China Academic Journal CD-ROM Edition (CAJ CD-ROM), Wanfang Data (WFD), Chongqing Wipo Information (CQWI), Changjiang Literature Library (CKL), etc., and has been included in the American Chemical Abstracts (CA), the Russian Abstracts Magazine (RAS), and the Japanese Science and Technology Literature Express (CBST). It is also included in Chemical Abstracts (CA) of USA, Abstracts Magazine of Russia, Scientific and Technical Literature (CBST) of Japan, Mining and Metallurgy Bulletin of UK and other authoritative foreign abstracts searching organisations.