extracting zinc raw materials
Research status and development of extraction process of zinc
2023.7.3 The extraction of Zn from zinc-bearing dust by circulating fluidized bed is to reduce zinc compounds, such as ZnO, ZnFe 2 O 4, ZnCO 3, and ZnCl 2, by regulating gas flow velocity, atmosphere, and temperature to form zinc vapor.
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Recovery of Zinc and Iron from Steel Mill Dust—An Overview
2022.6.10 The global shortage of zinc mines makes the extraction of zinc from zinc-containing wastes a hot research topic. Most kinds of steel mill dust (SMD) cannot be
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Disposal of zinc extraction residues via iron ore sintering
2023.11.6 Zinc extraction residue, a solid waste generated from the treatment of zinc-containing dust in rotary kilns, is commonly stockpiled in steel companies for extended
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Research status and development of extraction process
2023.7.3 iron content in zinc-bearing dust, it can be reused as raw material in the steel smelting process except for RHFD. Moreover, SD and RHFD can be reused to
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Tailings Utilization and Zinc Extraction Based on
2023.1.11 The practical significance of the obtained results are that the revealed regularities can be used to substantiate the parameters of the combined
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Pyrometallurgical Technology for Extracting Iron and Zinc
2023.5.18 Such hard-to-enrich and low-grade materials include electric arc furnace dust, which can be not only an iron-containing raw material for iron and steel production
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Materials Free Full-Text Recovery of Zinc and
2022.6.10 Abstract. : The global shortage of zinc mines makes the extraction of zinc from zinc-containing wastes a hot research topic. Most kinds of steel mill dust (SMD) cannot be directly returned to the
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Crystals Free Full-Text Phase Transformation
2022.4.29 The raw materials for zinc extractions include lead-zinc ores, zinc concentrate, and also secondary zinc resources from the smelter output. In the exploitation and consumption of zinc ore, many
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Solvent extraction and separation of zinc-iron from spent pickling ...
2021.12.1 Introduction Zinc has been primarily used in the hot-dip galvanizing industry to prevent steel corrosion [1]. In the process of galvanizing steel, it is quite
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Extracting precious zinc from waste ash ScienceDaily
2020.12.16 The zinc can then be extracted, washed and processed into raw material. "In our pilot study, we found that 70 percent of the zinc present in fly ash can be recycled.
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Surge in global metal mining threatens vulnerable ecosystems
2021.7.1 We explore whether the development of global metal mining has particularly affected vulnerable ecosystems around the world and identify hotspots of raw material extraction and ecosystem impact. We assume extraction gains to be associated with additional pressures, because production volumes are likely related to the areal extent of
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Evaluation and Current State of Primary and
2022.12.27 This slag is directed to landfills. The product obtained in the rolling furnace is zinc oxide, which is the raw material for the process of obtaining metallic zinc in the ISP and solvent extraction-electrowinning
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Materials Free Full-Text Recovery of Zinc and
2022.6.10 The global shortage of zinc mines makes the extraction of zinc from zinc-containing wastes a hot research topic. Most kinds of steel mill dust (SMD) cannot be directly returned to the ironmaking and
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Environmental impact of typical zinc smelting that ... - Springer
2022.10.10 The extracted zinc oxide calcine is returned to the process as an important raw material for zinc hydrometallurgy. Compared with the traditional process, it reduces the consumption of zinc concentrate by nearly 30% and indirectly reduces the mining volume of zinc ore to reduce the environmental pollution at the front end of raw
MoreExtracting precious zinc from waste ash ScienceDaily
2020.12.16 The zinc can then be extracted, washed and processed into raw material. "In our pilot study, we found that 70 percent of the zinc present in fly ash can be recycled.
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Strategies for Recycling of Primary and Secondary Resources
2022.1.16 Germanium extraction from technogenic raw materials was compared by Blaida et al. for efficiency of chemical and microbiological methods from coal ash and zinc sulfide. The efficiency of germanium extraction from coal ash and zinc sulfide was 78.50% and 19.52%, respectively, using chemical leaching.
More(PDF) A Study on the Mechanism and Kinetics of
2022.8.29 The results show that the zinc leaching rate under ultrasound reached 91.16% at a temperature of 25 °C, ultrasonic power 500 W, sulfuric acid concentration 140 g/L, liquid–solid ratio 5:1 ...
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Selective separation of zinc and iron/carbon from blast
2022.2.15 The major chemicals were found to be iron (35.9%), carbon (13.50%), and zinc (9.54%), which originated from the raw material and coke fines during the iron-making process (Machado et al., 2013). The other chemicals were contained in the dust as contaminants, which reflects the fruitfulness of the raw materials in BFD.
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Materials Free Full-Text Tailings Utilization and Zinc Extraction ...
2023.1.11 The problems of the complex use of tailings that are a technogenic deposit of polymetallic raw materials are especially acute for the world mining industry [1,2,3].According to Chinese studies, one ton of processed Pb/Zn ore accounts for 0.26 to 2.5 tons of tailings [4,5].The technologies of metal extraction from the accumulated
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Critical review on secondary zinc resources and their
2020.6.17 The presence of chlorine in the raw material and further, in typical acidic sulfate leachate leads to some problems during subsequent zinc EW. To overcome this problem, washing of the ash with distilled water and Na 2 CO 3 or pyrometallurgical pretreatment can be helpful ( Trpcevska et al. (2018) ).
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Recent advances in the recovery of germanium during the zinc
2022.10.15 The raw materials used in the germanium refining of Danxia Smelter are lead–zinc mines in Guangdong Fankou. To realize the efficient recovery of zinc, gallium, and germanium resources, Danxia smelter used a two-stage countercurrent oxygen pressure leaching process to recover gallium and germanium in 2009 ( Fig. 9 (b) ).
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An integrated and sustainable hydrometallurgical
2021.8.1 Introduction. In the collaborative smelting process of waste printed circuit boards and other secondary resources, heavy metals, such as copper, zinc, and lead, are contained in raw materials; additionally, halogen elements in waste printed circuit boards, such as chlorine and bromine, volatilize into the flue gas in the form of metal halides (Liu
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1,2, Xiansheng Hao 2, Xiaoming Liu 1,2,* and Na Zhang 3,
2022.6.10 Abstract: The global shortage of zinc mines makes the extraction of zinc from zinc-containing wastes a hot research topic. Most kinds of steel mill dust (SMD) cannot be directly returned to ... which is why the zinc content in the BF raw materials should not exceed 1% [5]. Most of the zinc enters the gas dust removal system with the flue gas ...
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Recovering of Zinc from Solid Waste Bearing Sphalerite or Zinc
2012.1.1 This study evaluates the efficiency of using mechanical activation for the extraction of zinc from sphalerite and zinc ferrite in lean zinc ores or EAF dusts in alkaline. The mechano-chemical leaching is more effective in comparison with the chemical leaching of non-activated samples. ... the mass ratio of ball to raw materials of 30:1. ...
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Studies on zinc recovery from technogenic waste
The increase in zinc dissolution at L : S = 7 is very small compared to that at L : S = 5. That is why we have chosen the ratio L : S = 5 in further experiments with that raw material. Similar ratio (L : S = 4) was found as optimum for extracting zinc from a rotary kiln cinder, 0 10 20 30 40 50 60 70 80.
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Materials Free Full-Text Reuse and Mechanochemical
2023.11.1 Another approach within the framework of the “circularity” concept is the re-extraction of metals from technogenic raw materials of old tailings [41,42] or after the direct formation of enrichment tailings [43,44,45], ash residue of solid household waste , and the reuse of various kinds of waste [47,48,49].
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Hydrometallurgical Recovery of Zinc from By-Products and
2023.1.22 The bottom dross formation represents 7–11% of zinc consumption during galvanizing. Galvanizers are not able to reprocess the dross in-house, therefore, it is sold at 65–75% of zinc price to recycling plants to produce high-quality zinc oxide or zinc dust (Worrell and Reuter 2014).The metal may be also separated from the dross and refined
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Batteries Free Full-Text Recycling of Alkaline Batteries via a ...
2019.3.19 Primary battery recycling has important environmental and economic benefits. According to battery sales worldwide, the most used battery type is alkaline batteries with 75% of market share due to having a higher performance than other primary batteries such as Zn–MnO2. In this study, carbothermal reduction for zinc oxide from
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Research on Separation and Extraction of Valuable Metals
2022.2.15 The extraction of vanadium with the leaching rate 98.51 wt% of vanadium from alum slag at the conditions of sulfuric acid concentration of 250 g/L, oxygen partial pressure of 0.4 MPa and temperature of 150 °C , and the extraction of 98.0 wt% gallium and 94.0 wt% germanium from the residual solid waste of the zinc refinery at the conditions of ...
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(PDF) An innovative technology for recovery of zinc, lead and
2016.1.1 The best results were obtained under the following conditions: a sulfuric acid at 70% of the raw material quality, roasting temperature of 300 °C and roasting time of 2 h, followed by the process ...
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Mineral requirements for clean energy transitions
2 天之前 Cathode (25–30%) and anode materials (8–12%) account for the largest shares. Given the importance of material costs in total battery costs, higher mineral prices could have a significant effect on achieving industry cost targets. For example, a doubling of lithium or nickel prices would induce a 6% increase in battery costs.
MoreComprehensive recovery of zinc, iron and copper from
2022.7.1 Copper slag is an artificial metallurgical raw material rich in iron, zinc, copper, lead, and other valuable elements. The grade of some metals in the slag even exceeds that of the original ore [[6], [7]]. With the increase in the use of global metal products and the reduction of primary ore reserves, the secondary extraction of
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A multilevel sustainability analysis of zinc recovery from wastes
2016.6.22 An increase by 4% in zinc production from mine between 2011 and 2012 has resulted in 11% drop in the price of zinc from 2193.9 US$/tonne in 2011–1950.4 US$/tonne in 2012. It has been estimated that, globally, 13.9 million tonnes of zinc has been extracted from mine in 2014 ( World Bureau of Metal Statistics, 2015 ).
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Crystals Free Full-Text Phase Transformation and Zinc Extraction ...
2022.4.29 The raw materials for zinc extractions include lead-zinc ores, zinc concentrate, and also secondary zinc resources from the smelter output. In the exploitation and consumption of zinc ore, many researchers have focused on the extraction of zinc from zinc-containing wastes, such as zinc-bearing dust in ironmaking and steelmaking
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The raw-materials challenge: How the metals and mining
2022.1.10 The required pace of transition means that the availability of certain raw materials will need to be scaled up within a relatively short time scale—and, in certain cases, at volumes ten times or more than the current market size—to prevent shortages and keep new-technology costs competitive (see sidebar “Rare-earth metals”).
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A systematic review of gold extraction: Fundamentals
2022.10.15 Removal of sulfide ore in raw materials by pretreatment can also effectively reduce the consumption of lixiviants. (3) Chlorine and bromine are also toxic and highly corrosive. Compared with chlorine and bromine, iodine has the advantages of lower toxicity, greater eco-friendliness, a neutral operating range, and more stable complexes
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Scarce mineral resources: Extraction, consumption and limits
2021.6.1 It is investigated how far the extraction rate of thirteen scarce raw materials can be reduced while simultaneously increasing the services they provide worldwide to the level prevailing in developed countries in 2020. ... Recovery of bismuth and arsenic from copper smelter flue dusts after copper and zinc extraction. Miner. Eng., 39 (2012), pp ...
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Extracting precious zinc from waste ash EurekAlert!
2020.12.16 The zinc can then be extracted, washed and processed into raw material. "In our pilot study, we found that 70 percent of the zinc present in fly ash can be recycled.
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Towards sustainable extraction of technology materials through ... - Nature
2021.9.21 A focus on end-to-end raw material traceability and linking LCA performance data, along with good quality social and governance data within the supply chains, is an important step to ensure that ...
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Promoted acid leaching of Zn from hazardous zinc
2022.7.1 In addition, the phase transformation methods have also been used to decompose ZnFe 2 O 4, such as the hydrothermal extraction with NH 4 Fe(SO 4) 2 12H 2 O (Wang et al., 2016a) ... Lead-zinc sulfide ore is one of the raw materials for the recovery of strategic germanium resources. Due to the complexity of its mineralization and the
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