MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Tailings selection sulfuric acid leaching
Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the Use of
Table 3 summarizes the experimental setup performed and the results obtained for the desired metals Cu, Zn, and Pb in a 4h experiment according to the 33 Box–Behnken design As shown, approximately 30% of Cu and Zn were leached within 4 h in experiment numbers 7, 8, and 12 These experimental conditions 展开2023年10月15日 Microbial leaching can effectively remove heavy metals in mine tailings Acidolysis, complexolysis, redoxolysis, bioaccumulation were summarized Strain association Bioleaching of heavy metals from metal tailings utilizing bacteria 2017年8月1日 The results showed that leaching of about 99% of nickel content of the washed tailing could be achieved using 40 mol sulfuric acid, pulp density of 1/20 gmL −1 and particle Leaching of nickel from a secondary source by sulfuric acidThis study presents an investigation of the sulfuric acid leaching of a sulfidic mining tailing with the use of ferric chloride and activated carbon as catalysts The results show that the addition of Leaching nickel sulfide tailings with activated carbon in sulfuric
The Use of Acid Leaching to Recover Metals from Tailings: A
2023年10月10日 Leaching experiments involved varying sulfuric acid concentrations, agitation at 400 RPM, and assessing temperature, acid dosage, leaching time, and solid–liquid ratio Initial In this research, a robust sulfuric acid leaching treatment was studied for metal extraction from suldic otation tailings (Ni 045 %, Co 080 %, Cu 020 %, Zn 058 %)Atmospheric leaching of Ni, Co, Cu, and Zn from sulfide tailings 2021年6月2日 Experimental results obtained show that it is possible to achieve the recovery of more than 87 wt% of Zn after 6 h of leaching with different sulfuric acid solutions The addition of carbonbased materials increases the Recovery of Zinc and Copper from Mine Tailings by 2021年10月26日 In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfatechloride media was investigated A 3 3 BoxBehnken design was applied to evaluate three variables over aLeaching of Cu, Zn, and Pb from Sulfidic Tailings Under
Leaching of iron from copper tailings by sulfuric acid:
Under optimal conditions (40 °C, sulfuric acid concentration of 053 mol L −1, stirring speed of 400 rpm, solid/liquid ratio of 1: 10 and leaching time of 120 min), 6645% of Fe, along with 6532% of Zn and 5995% of Cu, were leached from In this study, the kinetics and mechanism of the leaching of iron from copper tailings using sulfuric acid were studied Under optimal conditions (40 °C, sulfuric acid concentration of 053 mol L −1, stirring speed of 400 rpm, solid/liquid ratio Leaching of iron from copper tailings by sulfuric acid: 2020年11月11日 Li studied the gold extraction from tailings using sulfuric acid as a pretreatment before calcium hypochlorite leaching The obtained results showed that the leaching rate of Au was 81% using 8% calcium hypochlorite, 333 K chlorination temperature and Hydrometallurgical Recovery of Gold from Mining Wastes2021年6月2日 In the current investigation, carbonbased solid acid catalysts were synthesized from peanut shells (PSs) and rice straw (RS) using ZnCl2 activation and concentrated sulfuric acid sulfonationRecovery of Zinc and Copper from Mine Tailings by Acid Leaching
The Use of Acid Leaching to Recover Metals from
2023年11月8日 At present, there are no reviews on the recovery of metals via acid leaching in tailings, Sulfuric acid concentrations of 2–8 M resulted in initial and final copper recoveries of 15% and Under optimal conditions (40 °C, sulfuric acid concentration of 053 mol L −1, stirring speed of 400 rpm, solid/liquid ratio of 1 : 10 and leaching time of 120 min), 6645% of Fe, along with 6532% of Zn and 5995% of Cu, were leached from the tailings The leaching of iron was confirmed to be controlled by solidfilm diffusionLeaching of iron from copper tailings by sulfuric acid: behavior 2017年6月1日 The effect of different oxidants on extraction of uranium from low grade ore was studied Leaching was performed using sulfuric acid solutions at a concentration of 10 to 30%(PDF) Extraction of uranium from tailings by sulfuric acid leaching 2021年1月28日 For example, Zhang et al [28] reported that 8864% of Al leaching from bauxite tailings was obtained with a mixed acid concentration of 60%, liquidsolid ratio of 4 mL/g, temperature of 373 K and Leaching of iron from copper tailings by sulfuric acid: behavior
.jpg)
A Review of In Situ Leaching (ISL) for Uranium Mining MDPI
2024年3月2日 Weak acid leaching employs a low concentration of sulfuric acid, in conjunction with oxidizing agents such as oxygen or hydrogen peroxide, as the principal components of the leaching solution The development of this technique primarily addresses the application restrictions associated with acid leaching in uranium deposits characterized by high carbonate 2022年9月15日 In the sulfuric acid leaching process, the aqueous pH value played a vital role and it was better to conduct the leaching at temperatures below 323 K The sulfuric acid leaching reactions progressed fast and under a solid to liquid ratio of 1:10 the leaching efficiency of vanadium reached around 84% at 313 K and pH 250 in less than 30 parison and evaluation of vanadium extraction from the 2018年9月11日 efficiency of dilute alkali pretreatment–sulfuric acid leaching is superior to direct acid leaching Only 13 ppm and 75 ppm of uranium remained in tailings by using NaOH and Na 2CO 3, respectively, with an alkali concentration of 10 g/L, a liquidtosolid ratio of 20, and an agitation of 400 rpm for 2 h InUranium Extraction from Tailings by Dilute Alkali Pretreatment Sulfuric 2024年9月20日 (1) Employing a coleaching approach with sulfuric acid and phosphoric acid under conditions of a liquidtosolid ratio of 4:1, a leaching temperature of 70 °C, a leaching duration of 2 h, and a phosphoric acid to iron molar ratio of 11, using the coleaching method of sulfuric acid and phosphoric acid, titanium dioxide (TiO 2) with purity of 6157 % can be used Synergetic recovery of rutile and preparation of iron phosphate
Magnesium Extraction from Magnetic Separation Tailings of
2022年1月31日 The effects of sulfuric acid concentration, leaching temperature, leaching time, liquid–solid ratio, and stirring speed on the extraction degree of magnesium, nickel, and iron during magnetic 2024年10月15日 The current study proposes an efficient approach for the recovery of nickel and other valuable metals from nickel sulfide flotation tailings In the study, magnesium chloride, sodium chloride, and ferric chloride were investigated as reactants in an acidic medium to improve metal extraction The effect of leaching time, leaching temperature, H2SO4 concentration, Valuable Metal Recovery from Nickel Sulfide Flotation Tailings via The eects of sulfuric acid concentration, leaching temperature, leaching time, liquid–solid ratio, and stirring speed on the extraction degree of magnesium, nickel, and iron during magnetic separation tailings acid leaching were investigated The optimal leaching conditions are as follows: the temperature of leaching was 80Magnesium Extraction from Magnetic Separation Tailings of 2015年3月1日 Antonijevi'c et al (2008) and Asadi et al (2017) used sulfuric acid as leaching agent and ferric sulfate as an oxidant agent for the leaching of copper and zinc from the flotation tailings Leaching characteristics and mechanism of copper flotation tailings
(PDF) Leaching of Metals from Flotation Tailings of a Copper
2017年4月11日 58 Some researchers have studied the extraction of metals from SFT by sulfuric acid leaching in the presence of oxidants 28,58,70,71 In this study, the extraction of Cu, Co, and Zn from SFT by 2022年3月30日 Hydrometallurgical processes include sulfuric acid highpressure leaching, nitric acid pressure leaching, atmospheric leaching, and the sulfationroastingleaching processes (He et al, 2022; Ichlas et al, 2022; Ribeiro et al, 2019) which is often preferred because of its high recovery rate, moderate acid consumption, and low leaching Technospheric mining of scandium from hydrometallurgical tailings 2021年10月26日 Leaching rate of Cu, Zn, Pb, Fe, and As during the twostage leaching test a First stage at 1 h (60 g/L NaCl, 001 mol/L H 2 SO 4 , and 45 °C) and b second stage over 24 h (global leaching rate Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the Use Sulfuric acid was used as a pretreatment leaching solution and calcium hypochlorite was used as a chloride agent during the chlorination leaching Under different conditions, the potentialInvestigation on the recovery of gold from pretreated cyanide tailings
Sulfuric Acid Granulation of Copper Nickel Ore Tailings: Leaching
sulfuric acid leaching, where 50 mL of a 2% solution of sulfuric acid was fed to the surface of the heap with the same frequency The ambient temperature during leaching was +19 CThe growing demand for nickel increases the interest in its extraction from secondary sources, such as mine flotation tailings This paper proposes the use of activated carbon as a catalyst in sulfuric acid solutions to enhance the recovery of nickel and other valuable metals present in a nickel sulfide rougher flotation tailingLeaching nickel sulfide tailings with activated carbon in sulfuric acid 2020年4月7日 The effect of sulfuric acid concentration of uranium leaching rate, sulfuric acid concentration of 01 ~ 1 M, respectively The figure 3A shows that the concentration of sulfuric acid was lower than 05 M, the uranium leaching rate was increased with time While the sulfuric acid concentration reached 05 M, theExtraction of uranium from tailings by sulfuric acid leaching with 2018年6月17日 Request PDF Sulfuric acid baking and leaching of rare earth elements, thorium and phosphate from a monazite concentrate: Effect of bake temperature from 200 to 800 °C Monazite, a rare earth Sulfuric acid baking and leaching of rare earth elements, thorium
Carbothermal reduction followed by sulfuric acid leaching of
2021年9月15日 In this work, carbothermal reduction followed by sulfuric acid (H 2 SO 4) leaching of Bayan Obo tailings has been studied for the selective concentration of Fe and rare earth (RE) mineralsThe effect of basicity on the metallization rate of Fe, transfer behaviors of metallic Fe and RE elements, phase composition, and element migration was investigated Sulfuric acid was used as a pretreatment leaching solution and calcium hypochlorite was used as a chloride agent during the chlorination leaching Under different conditions, the potentialInvestigation on the recovery of gold from pretreated cyanide tailings 2021年4月1日 In this work, carbothermal reduction followed by sulfuric acid (H2SO4) leaching of Bayan Obo tailings has been studied for the selective concentration of Fe and rare earth (RE) mineralsCarbothermal reduction followed by sulfuric acid leaching of 2017年6月1日 Recovery of uranium have been performed by leaching uraniumcontaining tailings in sulfuric acid system with the assistance of HF, HClO4, H2O2 and MnO2 The effect of reagent dosage, sulfuric acid concentration, Liquid/solid ratio, reaction temperature and particle size on the leaching of uranium were investigatedExtraction of uranium from tailings by sulfuric acid leaching
.jpg)
Sulfur Removal and Iron Recovery from HighPressure Acid Leaching
2024年6月3日 Highpressure acid leach (HPAL) residue from laterite nickel ore is a potentially valuable resource for ironmaking; however, its efficient utilization is hindered by its high sulfur content In this study, an effective and straightforward method is proposed for sulfur removal from HPAL residue The process involves sieving and sodium carbonate leaching, enabling 2023年10月15日 Sulfuric acid is more effective than citric acid for the leaching of nickel from nickel laterites, using a mixed culture of chemolithotrophic The selection and breeding of efficient leaching strains and the construction of bacterial colonies are beneficial to improve the leaching Cu tailings from the acid leaching: 70% for Cu:Bioleaching of heavy metals from metal tailings utilizing bacteria 2022年1月23日 Sulfuric Acid Granulation of Copper—Nickel Ore Tailings: Leaching of Copper and Nickel in the Presence of Sulfide Oxidation Activators January 2022 Minerals 12(2):129Sulfuric Acid Granulation of Copper—Nickel Ore Tailings: Leaching 2020年1月1日 While oxalic acid (05 mol/L) was used to neutralize red mud prior to acetic acid leaching, lithium performed lower leaching efficiencies (4241–4688%) in comparison of using of hydrochloric Leaching efficiency of sulfuric acid on selective lithium
Carbothermal reduction followed by sulfuric acid leaching of
2021年9月15日 In this work, carbothermal reduction followed by sulfuric acid (H 2 SO 4) leaching of Bayan Obo tailings has been studied for the selective concentration of Fe and rare earth (RE) mineralsThe effect of basicity on the metallization rate of Fe, transfer behaviors of metallic Fe and RE elements, phase composition, and element migration was investigated the optimal leaching conditions are 85 kg/t concentrated sulfuric acid, a leaching temperature of 6851 C, and a leaching time of 436 h The actual measured leaching efficiency under these Copper Leaching from Refractory Flotation Tailings2024年8月19日 Recent focus on hydrometallurgical methods for nonsulfide copper ores prompted a study on leaching a copper oxide ore containing 222% Cu, 449% SiO2, 694% Al, 661% Fe, 625% Mg, 367% Ca, and 17% Na with H2SO4 for gaining insight into the behavior of impurities in the leaching process The effects of leaching time (30–180 min), acid Efficient Acid Leaching of Low Carbonate Copper Oxide Ore: A 2017年8月1日 It is reported that sulfuric acid can be used for the leaching of Ni containing wastes and nickel sulfate is commercially important due to its usage in electroplating [17]Some studies have demonstrated that sulfuric acid is more efficient than hydrochloric acid for nickel recovery from spent catalyst [18]Also, 99% of nickel is recovered when using acid Leaching of nickel from a secondary source by sulfuric acid
.jpg)
Geological and mineralogical study of ore tailings for bioleaching
2021年9月10日 of sulfuric acid bioleaching in the agitator The t echnological scheme for bioleaching copper from tailings to obtain copper concentrate is shown in Figu re 42022年7月1日 Kuppusamy and Holuszko systematically studied the extraction of rare earth elements from coal tailings by sulfuric acid roastingwater leaching method, and the results showed that the highest Sulfuric acid baking and water leaching of rare earth elements 2018年4月4日 While sulfuric acid was determined as the best candidate for direct acid leaching of both metals, the need of pretreatment, low solidtoliquid ratio, high acid concentration and consumption, and Novel Approach for Enhanced Scandium and Titanium Leaching2018年12月4日 Acid leaching followed by thermal activation and water or alkaline solution leaching followed by lime or sodalime mixture sintering are the main developed processes to produce alumina from nonbauxite ores []However, removing silica due to its solubility before carbonation of aluminate solutions by alkaline leaching and removing iron solubilized before Thermal and Mechanical Activation in Acid Leaching Processes of
.jpg)
Leaching of iron from copper tailings by sulfuric acid: behavior
2021年1月28日 When the sulfuric acid concentration reached 053 mol L −1, FeO from Fe 3 O 4 was slightly decomposed 25 However, an excess of sulfuric acid would destroy the leaching system due to the rapid formation of H 4 SiO 4 by the quick dissolution of Fe 2 SiO 4 11 The elevated temperature enhances the leaching of metal ions and oxidation of Fe 2+ to Fe 3+minimum acid and concentrate ratio required is 16:1 [19] Similar studies have been carried out in the research on the processing of Bangka monazite with the acid method by digestion using sulfuric acid The dimensions of the monazite ore, the amount of sulfuric acid used, the temperature, the length of time, and the amount of waterKinetics Study of Yttrium Leaching from Zircon Tailings Using Sulfuric Acid