Optimal parameters of the heap leaching of oxidized nickel ores by the box-wilson steep-ascent method. Part 1

IF 0.8 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING Metallurgist Pub Date : 2024-10-15 DOI:10.1007/s11015-024-01798-z

Aleksey Serheyevich Gavrilov, Aleksey Gennadievich Krasheninin, Sofia Aleksandrovna Petrova, Anastasia Anatolievna Belozerova, Dmitrii Sergeevich Reutov

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Abstract

We study the material composition of a ferromagnesian oxidized nickel ore of the Serov deposit. According to the results of chemical analysis, it was found that the studied ore is poor in the nickel content. Note that magnesium and iron are present in the ore as macroimpurities. The main nickel-containing minerals are lizardite and clinochlore; smaller amounts of nickel are contained in talc. To determine the optimal technological parameters of heap leaching and reveal their correlation dependences, we use the mathematical method of data processing, namely, the Box–Wilson steep ascent method. Based on the results of leaching, we compute the values of the efficiency criterion and the variance of the efficiency criterion and deduce a regression equation for the description of the process of leaching. The adequacy of the regression equation is established by using the Fisher criterion.

The results of mathematical processing of the experimental data show that the concentration of sulfuric acid in the solution, the pause between irrigations, and the specific consumption of the leaching solution exert a significant effect on the efficiency of leaching in the stage of nickel extraction from 0–30%.

On the basis of computed values of the efficiency criterion, we determine the values of variable parameters for the second stage of determination of the optimal conditions of leaching guaranteeing the efficient ore opening in the stage of nickel extraction up to 30%.

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箱式-威尔逊陡峭上升法氧化镍矿石堆浸的最佳参数。第一部分

我们研究了谢罗夫矿床铁镁氧化镍矿石的物质成分。根据化学分析结果，我们发现所研究的矿石镍含量较低。需要注意的是，镁和铁作为大杂质存在于矿石中。主要的含镍矿物是蜥蜴石和绿帘石；滑石中含有少量镍。为了确定堆浸的最佳技术参数并揭示其相关性，我们使用了数据处理的数学方法，即 Box-Wilson 陡峭上升法。根据沥滤结果，我们计算了效率标准值和效率标准方差，并推导出描述沥滤过程的回归方程。对实验数据进行数学处理的结果表明，溶液中硫酸的浓度、灌溉间隔时间和浸出液的具体消耗量对镍提取阶段 0-30% 的浸出效率有显著影响。根据计算得出的效率标准值，我们确定了第二阶段确定最佳浸出条件的可变参数值，以保证镍提取阶段的有效矿石打开率达到 30%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Metallurgist 工程技术-冶金工程

CiteScore

1.50

自引率

44.40%

发文量

151

审稿时长

4-8 weeks

期刊介绍： Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).