Efficient Synchronous Extraction of Nickel, Copper, and Cobalt from Low–Nickel Matte by Sulfation Roasting‒Water Leaching Process

Sun, Qiangchao; Cheng, Hongwei; Mei, Xiaoyong; Liu, Yanbo; Li, Guangshi; Xu, Qian; Lu, Xionggang

doi:10.1038/s41598-020-66894-x

Cited by 21 publications

(9 citation statements)

References 35 publications

(41 reference statements)

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“…For the case of the determined sulfur species S 4 , S 6 , and S 8 , their formation is thought to occur after the accumulation of different sulfur‐containing VOCs (e.g., H 2 S, thiols, COS and CS 2 ) still present in N 2 6.0 on active centers at the surface of the nickel/nickel oxide filter. They may also originate from the filter itself, as S x is a genuine trace impurity of all nickel metal samples 59–62 where it can segregate from the bulk, especially when exposed to oxygen‐ 63 or hydrogen‐containing gases. A further discussion on the sulfur species and their origin can be found in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Determination of trace compounds and artifacts in nitrogen background measurements by proton transfer reaction time‐of‐flight mass spectrometry under dry and humid conditions

et al. 2021

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A qualitative analysis was applied for the determination of trace compounds at the parts per trillion in volume (ppt v ) level in the mass spectra of nitrogen of different qualities (5.0 and 6.0) under dry and humid conditions. This qualitative analysis enabled the classification and discovery of hundreds of new ions (e.g., [S x ]H + species) and artifacts such as parasitic ions and memory effects and their differentiation from real gas impurities. With this analysis, the humidity dependency of all kind of ions in the mass spectrum was determined. Apart from the inorganic artifacts previously discovered, many new organic ions were assigned as instrumental artifacts and new isobaric interferences could be elucidated. From 1140 peaks found in the mass range m/z 0-800, only 660 could be analyzed due to sufficient intensity, from which 463 corresponded to compounds. The number of peaks in nitrogen proton transfer reaction (PTR) spectra was similarly dominated by nonmetallic oxygenated organic compounds (23.5%) and hydrocarbons (24.1%) Regarding only gas impurities, hydrocarbons were the main compound class (50.2%). The highest contribution to the total ion signal for unfiltered nitrogen under dry and humid conditions was from nonmetallic oxygenated compounds. Under dry conditions, nitrogen-containing compounds exhibit the second highest contribution of 89% and 96% for nitrogen 5.0 and 6.0, respectively, whereas under humid conditions, hydrocarbons become the second dominant group with 69% and 86% for nitrogen 5.0 and 6.0, respectively. With the gathered information, a database can be built as a tool for the elucidation of instrumental and intrinsic gas matrix artifacts in PTR mass spectra and, especially in cases, where dilution with inert gases plays a significant role. K E Y W O R D Sgas impurities, gas traces, industrial gases, proton transfer reaction time-of-flight mass spectrometry, volatile organic compounds

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Section: Resultsmentioning

confidence: 99%

Determination of trace compounds and artifacts in nitrogen background measurements by proton transfer reaction time‐of‐flight mass spectrometry under dry and humid conditions

et al. 2021

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“…The conversion of iron to water-insoluble hematite with the acid baking might be associated with decreased amount of iron in the pregnant solution after the leaching procedure. In this case, the iron sulfate peaks, which are not detected in calcines at 700°C and 710°C, show that the iron recovery is minimal at these temperatures (Sun et al, 2020). Sun et al (2020) ensured that the base metal sulfates were taken to the solution after water leaching; and selective recovery of base metals by leaving the hematite structures in the leaching residue.…”

Section: Determination Of Iron Selectivity Behaviourmentioning

confidence: 90%

“…In this case, the iron sulfate peaks, which are not detected in calcines at 700°C and 710°C, show that the iron recovery is minimal at these temperatures (Sun et al, 2020). Sun et al (2020) ensured that the base metal sulfates were taken to the solution after water leaching; and selective recovery of base metals by leaving the hematite structures in the leaching residue. The pH value of the pregnant solutions of acid-baked calcines made at 650 o C, 690°C, and 700 o C to determine the amount of iron in the leaching solutions was increased to 3.5 after leaching, and iron was precipitated chemically (Kongolo et al, 2003).…”

Section: Determination Of Iron Selectivity Behaviourmentioning

confidence: 90%

“…1), separated from the glassy structure after the decomposition of the fayalite structure, and was detected as cobalt sulfate in 16, 19, and 26 (Uzun Kart, 2021). It was also seen that the copper sulfide was converted into copper oxide at 35 2θ, and into copper sulfate at 26 and 32 2θ at 650°C (Sun et al, 2020). In the literature, the decomposition temperature of copper was determined to be 650°C (Weast, 1980;Tumen and Bailey, 1990;).…”

Section: Baking Behaviour Of Ccs Flotation Tailingmentioning

confidence: 99%

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Investigation of iron selectivity behaviour of copper smelter slag flotation tailing with hematitization baking and base metals leaching methods

KART¹,

YAZĞAN²,

Gümüşsoy³

2021

Physicochem. Probl. Miner. Process.

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In this study, iron selectivity behaviour of copper smelter slag (CSS) flotation tailings (38.08% Fe, 0.35% Cu, 4.48% Zn, 0.16% Co, 0.37% S) having fayalite and magnetite as major minerals was investigated with hematitization baking and base metals leaching methods using mineralogical and chemical analyses. For selectivity of iron, it was baked at temperatures of 650-690-700-710-730°C. The aim of the baking is to transform the almost all of the iron in the fayalite into the oxidized (non-soluble) form and the base metals into the sulphated (soluble) form. The temperature that had the lowest hematitization rate of iron was found to be 650°C, and the highest temperature was found to be 730°C. To examine the dissolution behaviour of baked CSS flotation tailing was leached at 50°C at a 1/10 (w/v) for 1 hour by using water. After baking at 690°C calcine and leaching residue, S values were determinated to be approximately 17% and 9%, respectively. Baking made at 700⁰C, amount of sulfate also decreased to 10% and S content was measured as 4% of its leaching residue. As a result of this study, 690⁰C/700⁰C was determined as optimum conditions of hematitization baking and base metals were extracted selectively when the iron was remained at leaching residue in Fe2O3 phase. It was determined that, hematitization is high and the sulphates of the base metals are preserved at 700⁰C temperature. The fayalite phase completely decomposed into Si-O/Fe-O/Zn-S-O/Co-S-O compounds at 700⁰C baking which was the highest iron selective and base metals dissolute temperature.

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“…Sulfation roasting is an effective method for processing complex and lean ores [16,17]. This process is carried out to convert metal oxides or sulfides into metal sulfates that are easily leached with water [18,19].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Magnesium and Nickel from Nickel-Rich Serpentine with Sulfation Roasting and Water Leaching

Yang

Gao

et al. 2022

Metals

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Magnesium and nickel were recovered from nickel-rich serpentine through sulfation roasting and water leaching. The factors affecting the extraction percentages of Mg and Ni were discussed. Under the conditions of the ratio of acid to ore of 0.8:1 and roasting temperature of 650 °C for 120 min, 91.6% of Mg and 88.7% of Ni but only 4.8% of Fe were extracted. The roasting kinetics of Mg and Ni were investigated. The results showed that the roasting stage was governed by internal diffusion in the temperature range of 350–650 °C, and the activation energy of nickel and magnesium were different in the time ranges of 0–30 min and 60–120 min, with 17.45 kJ⋅mol−1 (0–30 min) and 14.12 kJ⋅mol−1 (60–120 min) for magnesium and 15.48 kJ⋅mol−1 (0–30 min) and 12.46 kJ⋅mol−1 (60–120 min) for nickel. The kinetic equations were obtained.

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Efficient Synchronous Extraction of Nickel, Copper, and Cobalt from Low–Nickel Matte by Sulfation Roasting‒Water Leaching Process

Cited by 21 publications

References 35 publications

Determination of trace compounds and artifacts in nitrogen background measurements by proton transfer reaction time‐of‐flight mass spectrometry under dry and humid conditions

Determination of trace compounds and artifacts in nitrogen background measurements by proton transfer reaction time‐of‐flight mass spectrometry under dry and humid conditions

Investigation of iron selectivity behaviour of copper smelter slag flotation tailing with hematitization baking and base metals leaching methods

Extraction of Magnesium and Nickel from Nickel-Rich Serpentine with Sulfation Roasting and Water Leaching

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