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Na2CrO4 from Domestic Chromite Concentrates by an Alkali-Fusion Method

机译：国内铬铁精矿Na2CrO4的碱熔融法

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The Bureau of Mines has devised a procedure to recover chromium chemicals from concentrates derived from low-grade domestic chromites. These domestic chromites contain silicon and aluminum impurities at levels that are too high to permit processing by present industrial processes. The Bureau procedure consists of reacting chromite with molten NaOH under oxidizing conditions to form sodium chromate (Na2CrO4). The reaction product is leached with methanol to recover the majority of the unreacted NaOH, then with water to extract the Na2CrO4 and the remainder of the NaOH. The Na2CrO4 product is recovered by evaporative crystalization from the aqueous solution.

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作者
Hundley, G. L. ; Mussler, R. E. ; Holmes, R. A. ; Olsen, R. S.;
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年度 1988
页码 1-19
总页数 19
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Chromites; Beneficiation; Metalliferous mineral deposits; Chromate minerals; Leaching; Extractive metallurgy; Hydrometallurgy; Sodium hydroxide;

机译：铬铁矿;选矿;含金属矿床;铬酸盐矿物;浸出;冶金提取;湿法冶金;氢氧化钠;

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2. Applicability of Mozley multigravity separator (MGS) to fine chromite tailings of Turkish chromite concentrating plants [J] . T. Cicek, I. Cocen Minerals Engineering . 2002,第1a2期

机译：莫兹利多重力分离器（MGS）在土耳其铬铁矿选矿厂的细铬铁矿尾矿中的适用性
3. Solid state reduction of chromite concentrate: melting of prereduced chromite [J] . A. Lekatou, R. D. Walker Ironmaking & Steelmaking . 1995,第5期

机译：铬铁矿精矿的固态还原：还原的铬铁矿的熔融
4. The recovery of chromite fines from the tailings of karagedik chromite concentrator [C] . A.Güney, G.?nal International Mineral Processing Congress . 1997

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5. Plasma Refining of Domestic Chromite Ore. [D] . Kelley, Harold E. 1984

机译：家用铬铁矿的等离子体精制。
6. A Comparative Assessment of Quality of Platelet Concentrates Prepared by Buffy Coat Poor Platelet Concentrate Method and Apheresis Derived Platelet Concentrate Method [O] . R. S. Mallhi, Sudeep Kumar, Joseph Philip 2015

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7. Application of Full Factorial Experimental Design and Response Surface Methodology for Chromite Beneficiation by Knelson Concentrator [O] . Gul Akar Sen 2016

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8. Upgrading Domestic High-Iron Chromite Concentrates by Carbonyl Extraction of Excess Iron [R] . Visnapuu, A. , Dressel, W. M. 1985

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Na2CrO4 from Domestic Chromite Concentrates by an Alkali-Fusion Method

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