CaO/SiO2二元碱度对红土镍矿选择性还原的影响

IF 1.2 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Periodico Di Mineralogia Pub Date : 2021-02-12 DOI:10.13133/2239-1002/17045

F. Nurjaman, Khulud Saekhan, F. Bahfie, W. Astuti, B. Suharno

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引用次数: 5

摘要

目前正在开发选择性还原方法来处理红土镍矿，以低温度或低能耗生产高含量镍。研究了二元碱度（CaO/SiO2）对红土镍矿选择性还原过程的影响。本研究采用镍含量1.38%，铁含量38.2%的红土镍矿。还原在马弗炉中在1150°C下进行60分钟，使用10wt.%的硫酸钠添加剂、烟煤作为还原剂，并添加氧化钙以改变其二元碱度。结果表明，由于镁、铁和硅酸镍破碎成金属铁和镍，镍品位由0.1碱度产生。然而，由于高熔点化合物的形成，碱度的下一次增加降低了镍品位。红土镍矿，选择性还原，二元碱度，还原剂，添加剂。

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Effect of Binary Basicity (CaO/SiO2) on Selective Reduction of Lateritic Nickel Ore

Selective reduction methods are being developed to process lateritic nickel ore to produce nickel with high content with low temperature or energy consumption. This research was carried out to study the effect of binary basicity (CaO/SiO 2 ) in the lateritic nickel ore's selective reduction process. The lateritic nickel ore with 1.38% Ni and 38.2% Fe content was used in this study. The reduction was conducted at 1150°C for 60 minutes in a muffle furnace with 10 wt.% additives of sodium sulfate, bituminous coal as reductant, and calcium oxide addition to modify its binary basicity. The results showed that the nickel grades generates from the 0,1 basicity due to the breakage of magnesium, iron, and nickel silicate into metallic iron and nickel. However, the next increase of basicities decreased the nickel grade due to the formation of a high melting point compound. lateritic nickel ore, selective reduction, binary basicity, reductant, additive.

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来源期刊

Periodico Di Mineralogia 地学-地球化学与地球物理

CiteScore

1.50

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Periodico di Mineralogia is an international peer-reviewed Open Access journal publishing Research Articles, Letters and Reviews in Mineralogy, Crystallography, Geochemistry, Ore Deposits, Petrology, Volcanology and applied topics on Environment, Archaeometry and Cultural Heritage. The journal aims at encouraging scientists to publish their experimental and theoretical results in as much detail as possible. Accordingly, there is no restriction on article length. Additional data may be hosted on the web sites as Supplementary Information. The journal does not have article submission and processing charges. Colour is free of charges both on line and printed and no Open Access fees are requested. Short publication time is assured. Periodico di Mineralogia is property of Sapienza Università di Roma and is published, both online and printed, three times a year.