Hydrochloric acid leaching of nickel sulfide precipitates

Jha, M.C.; Carlberg, John R.; Meyer, Gustavo A.

doi:10.1016/0304-386x(83)90030-0

Cited by 10 publications

(6 citation statements)

References 3 publications

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“…The generation of sulfur, based on eqs. (11) and (10) was confirmed; hence, the sulfur content generated in eq. (8) can be calculated by subtracting the sulfur content generated in eqs.…”

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 64%

“…The amounts of sulfuric acid ions show no increase in eqs. (11) and (8); hence, the sulfur content, which is oxidized according to eq. (10), can be calculated from the sulfuric acid increase in the reaction.…”

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 99%

“…(8) can be calculated by subtracting the sulfur content generated in eqs. (11) and (10) from the total sulfur content calculated based on the total amount of leached nickel.…”

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 99%

“…Nickel disulfide is formed on the surface of the residue as the reaction proceeds. The nickel disulfide on the outmost surface of the MS leaching residue is metastable and known to be a slightly soluble compound generated in sulfuric acid solution, 10,11) the formation of this compound on the MS leaching residue is considered to be the main factor of preventing selective nickel leaching from MS. This assessment is also consistent with the amounts of sulfur fixed in the MS leaching residue and the balance of sulfur in the reaction.…”

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 99%

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Selective Nickel Leaching from Nickel and Cobalt Mixed Sulfide Using Sulfuric Acid

Kobayashi¹,

Shoji²,

Asano³

et al. 2018

Mater. Trans.

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Sumitomo Metal Mining Co., Ltd. (SMM) has gradually increased the mixed sulfide (MS: mixture of nickel and cobalt sulfides) production from nickel laterite ore as raw material for the SMM's unique Matte Chlorine Leach and Electro-winning (MCLE) process over the past decade. This process has significant cost advantages because it is capable of selectively and effectively leaching nickel from MS; however, chlorine leaching requires expensive corrosion-resistant facilities. A new process that could be operated using lower-cost facilities has therefore been desired. To meet its development needs, this study evaluated a process for nickel-selective leaching from MS, which is similar to the existing process for refining of ZnS. The process uses sulfuric acid, which does not require high-cost facilities. However, selective nickel leaching from MS, which was the process development goal, could not be achieved. This result is quite different from the case of selective Zn leaching from ZnS. The mechanism of nickel leaching from MS using sulfuric acid was identified. It was shown that nickel-selective leaching using sulfuric acid is difficult because of the formation of elemental sulfur and NiS 2 precipitates on the MS surface that interfere with the leaching reaction.

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“…The generation of sulfur, based on eqs. (11) and (10) was confirmed; hence, the sulfur content generated in eq. (8) can be calculated by subtracting the sulfur content generated in eqs.…”

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 64%

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 99%

“…(8) can be calculated by subtracting the sulfur content generated in eqs. (11) and (10) from the total sulfur content calculated based on the total amount of leached nickel.…”

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 99%

Section: Sulfuric Acid Leaching Of Sulfidesmentioning

confidence: 99%

See 2 more Smart Citations

Selective Nickel Leaching from Nickel and Cobalt Mixed Sulfide Using Sulfuric Acid

Kobayashi¹,

Shoji²,

Asano³

et al. 2018

Mater. Trans.

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“…In the presence of sulfuric acid and oxygen, the solubility of metallic nickel, nickel subsulfide, and cuprous sulfide is different, as completely dissolved, partially dissolved, and undissolved, respectively. The following reactions take place during the leaching [42]: AL process has the advantages of simple process, low energy consumption, less equipment investment, and easy control of operating conditions [43,44], but its (17) disadvantages, such as low leaching rate, difficult separation of leaching solution, high nickel content in leaching residue and large amount of waste water, also increase in cost of production.…”

Section: Atmospheric Leachingmentioning

confidence: 99%

Comprehensive Review on Metallurgical Upgradation Processes of Nickel Sulfide Ores

Zhao

Gao

Yang

2022

J. Sustain. Metall.

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With the vigorously growing demand of the steel industry, corrosion resistance alloys, clean energy industries, and a variety of engineered infrastructure or technology, high-grade nickel ores are being exhausted gradually in the world. This review outlines metallurgical processes for nickel production from various nickel sulfide ores resources, particularly focusing on recent developments in metallurgical processes to identify potential trends and technical requirements in nickel metallurgy. The main methods have been extensively reviewed for nickel extraction from nickel sulfide ores which maybe are potentially applicable to provide new ideas for smelting technology innovation of nickel and even other similar metals. The main metallurgical methods include pyrometallurgical and hydrometallurgy, containing smelting, leaching, and purification. The advantages and disadvantages of each typical process have been analyzed and compared in this review, and a special emphasis is put forth. Biological metallurgy is highly selective for recovery of nickel and the most promising method recommended for future research and development. Moreover, ion exchange offers useful method for extraction and purification of nickel. In addition, many of the typical new methods involved are also introduced in this article.

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Hydrometallurgy — A Review and Preview

Warren¹

1984

JOM

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Hydrochloric acid leaching of nickel sulfide precipitates

Cited by 10 publications

References 3 publications

Selective Nickel Leaching from Nickel and Cobalt Mixed Sulfide Using Sulfuric Acid

Selective Nickel Leaching from Nickel and Cobalt Mixed Sulfide Using Sulfuric Acid

Comprehensive Review on Metallurgical Upgradation Processes of Nickel Sulfide Ores

Hydrometallurgy — A Review and Preview

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