The widespread use of electroless nickel plating inevitably leads to substantial discharge of spent electroless nickel plating solution (SENPS), which poses a serious threat to the environment. It remains highly challenging to efficiently treat SENPS, as it mostly contains organic nickel complexes that have
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The grade and recovery of copper in the mixed concentrate obtained by flotation were 2.377 % and 83.73 %, and the grade and recovery of nickel were 10.28 % and 85.00 %. By magnetic separation test of the flotation tailings, iron concentrate with iron grade and recovery of 73.77 % and 12.41 % was obtained.
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The feasibility of achieving nickel recovery from nickel-containing wastewater after simple adsorption pretreatment was experimentally researched and the following conclusions were drawn: 1) Many organic and inorganic impurities in the actual electroplating wastewater can seriously affect the electrolytic recovery efficiency and …
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The efficiency of CEP and ED for Ni(II) removal was expressed in terms of recovery rate and concentration factor. In CEP process, recovery rates of 99% were found with a 40 ppm Ni(II) concentration and an applied current density of 2 mA.cm-2 resulting in an outlet Ni(II) concentration lower than 1 ppm, against 73.69% in conventional ED ...
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recovery of the nickel through nickel carbonation reactors. The nickel sulfate plant was successfully transformed to the nickel carbonate plant, as shown in Fig. 5. The process …
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In order to determine the optimal process parameters of extracting metal from nickel concentrate by NaCl roasting and the primary and secondary factors affecting metal conversion in the roasting process, an L 9 (3 4) orthogonal experiment with four factors and three levels was designed by an orthogonal design assistant software.The experimental …
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Research highlights Bacillus subtilis is a neutrophile bacterium, showing capacity in this study to mobilise nickel from tailings at neutral pH. It could therefore be suitable for recovery of residual precious metals from tailings without risk of effluent acidification, providing therefore an ecofriendly and cost advantages. Study of the …
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This study focused on the development of hydrometallurgical process which allows the nickel (Ni) and cobalt (Co) recovery from a low grade laterite ore. The developed process consists of two main stages: leaching and precipitation. In the first stage, an appropriate leach liquor which contains a relatively high nickel and cobalt …
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Based on the experimental results, the efficient recovery of cobalt (Co) and nickel (Ni) from the low grade laterite ore can be achieved using the pressure leaching …
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The unprecipitated nickel in the strip liquor increases from 0.357 g/L to 0.413 g/L and then decreases to 0.248 g/L. The nickel stripping ratio (Total nickel amount of precipitation and strip liquor) increases gradually and then changes little following addition of oxalic acid concentration.
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From the leaching results was known that the higher temperature and processing time, the recovery of nickel will be higher. The results showed that the optimum conditions leaching process was at a concentration of 2 M ammonium carbonate, with temperature was 60°C for 5 hours, and the ratio S/L was 20 g/L, resulting leaching percentage of 29.31 ...
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In this study, it was aimed to extract vanadium (V) and nickel (Ni) from a petroleum coke ash (PCA) using a roasting process without additives, followed by leaching with sulfuric acid (H2SO4). The experiments were designed based on the Taguchi approach, taking into account the parameters of temperature, acid concentration, time, and solid ratio. …
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From the leaching results was known that the higher temperature and processing time, the recovery of nickel will be higher. The results showed that the optimum conditions leaching process was at a concentration of 2 M ammonium carbonate, with temperature was 60°C for 5 hours, and the ratio S/L was 20 g/L, resulting leaching percentage of 29.31 ...
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Excellent recovery yields were achieved for Ni, Cu and Co (91.5%, 85.0% and 54.6%, respectively) at ambient temperature and atmospheric pressure in 240 h. The optimal condition for this mixed acid leaching of Ni–Cu sulfide tailings is the following: tailings/nitric acid/sulphuric acid in a weight ratio of 1:0.42:0.18.
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High purity alumina is produced from the process as a part of the leached residue. A smelting process is also developed for recovery of nickel as ferronickel from a variety of spent catalysts containing nickel in the range 8-25%. Various grades of ferronickel with a nickel content in the range of 20% to 80% have been produced.
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WO2002024966A1 - Recovery of nickel and cobalt values from a sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid - Google Patents ... Priority to EP01909372A priority Critical patent/EP1325165B1/en Priority to CA002376883A priority patent/CA2376883C/en
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Examples include copper and nickel recovery from metal finishing processes; the recovery of oils, fats, and plasticizers by solvent extraction from filter media such as activated …
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EP3190195A4 EP15831422.9A EP15831422A EP3190195A4 EP 3190195 A4 EP3190195 A4 EP 3190195A4 EP 15831422 A EP15831422 A EP 15831422A EP 3190195 A4 EP3190195 A4 EP 3190195A4 Authority EP European Patent Office Prior art keywords recovery method nickel recovery nickel recovery Prior art date Legal …
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Most of the laterite contains 0.7 to 1.84 wt% of Ni, and recovery with leaching in all the cases is more than 85%. Recovery is more than 90% for laterite with more than 1% nickel content irrespective of mineralogy. Table 12 explains that atmospheric leaching shows less nickel recovery with sulfuric acid leaching than with NAPL. Hence, …
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The global aerospace industry's recovery has increased demand for nickel, a key aircraft component due to its corrosion resistance, high strength and mechanical properties.This increased demand could complicate or delay new energy infrastructure by diverting metal supply from energy sectors such as upstream, offshore and liquefied …
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Nickel in EV batteries is recycled at a rate of below 5 percent presently. As electric vehicles become more common, recycling will be an important factor for nickel supply. Additionally, nickel pig iron is a cheaper and lower grade alternative to primary nickel used to make stainless steel, and it is used to produce stainless steel in China.
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Zhang et al. (2020) developed a selective process for the recovery of Ni from ammoniacal leach liquor of spent Ni–Mo–Al 2 O 3 catalyst. A solution containing …
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This paper describes a new process to recover nickel and sulfuric acid from tankhouse bleed electrolyte, which contains copper and other impurities. The process …
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View Timothy Nickel's profile on LinkedIn, a professional community of 1 billion members. ... Tri-State Asset Recovery + Tri-State Electronics Recycling Oct 2021 - Sep 2024 3 years.
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Bench scale results will provide a basis to investigate nickel and cobalt recovery from various sulfide resources using a benign alkaline leach technology, non …
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Recover nickel and cobalt from a variety of feeds including E-Waste, metal scrap, Nickel by-products, batteries, refinery bleeds, and more. +1.604.988.0058; ... and why the recovery of nickel and nickel recycling is becoming increasingly significant in our consumer-based society. The efficiency of electrowinning any metal, including Nickel or ...
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Spent nickel metal hydride (Ni-MH) batteries are considered to be possible sources of Ni recovery and recycling, and have been the object of some scientific investigations. This recovery is also important from environmental perspective, as disposal of the waste batteries constitute a significant release of Ni to the environment.
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Contact Us. RG Recycling Group Ltd 631 Warwick Road Solihull B91 1AR. Email: info@rgrecyclinggroup Tel: +44 (0)121 709 5371. Enquiry. Your Name . Your Email* (required)
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After filtering the nickel precipitate, it was dissolved with a sulfuric acid solution of over 2 vol%, with which more than 95% of the nickel precipitate could be dissolved. For nickel recovery by electrowinning, the pH of the nickel solution required an adjustment of nearly 2.0.
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JHH - Electroplating Nickel Wastewater ( Nickel Recovery) Treatment Equipment. The main design of this system equipment is JHH-RO integrated machine, in which the …
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