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leaching process optimize

Process optimization for acidic leaching of rare earth

2021-9-3  Leaching procedure. In phase II, 0.1 g e-waste samples and acid solutions (HCl or HNO 3 or aqua regia) were added into glass beakers and covered with watch-glass taps during the leaching process. Leaching experiments were carried out on the heating table at approximately 200°C for 45 min.

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Optimization of leaching parameters for the extraction of

2014-3-1  The optimization of leaching operation of Rare earth bearing ores is a complex process since many attributes simultaneously affect the operation, with some of them being conflicting in nature. Therefore a proper selection of the leaching process with pertinent attributes is crucial for the user in order to maximize the percentage recovery with

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Optimization of the Heap Leaching Process through

The importance of mine planning is often underestimated. Nonetheless, it is essential in achieving high performance by identifying the potential value of mineral resources and providing an optimal, practical, and realistic strategy for extraction, which considers the greatest quantity of options, materials, and scenarios. Conventional mine planning is based on a mostly deterministic approach

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Optimization of process parameters for the selective

2021-10-1  The metallic portion produced in the pre-treatment process is chemically analysed and dissolved in various leaching reagents for the optimization of leaching of copper and nickel, including the type of leaching reagent, temperature, time, pulp density and agitation speed. 3.1. Analysis of metallic fraction from delamination of WPCBs

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Leaching zinc from spent catalyst: Process optimization

2010-4-15  RSM helps to optimize the process, influenced by number of operating parameters with a minimum number of experiments as well as to analyze the interaction between the parameters. Ammonia concentration (χ 1), leaching time (χ 2) and liquild/solid ratio (χ 3) were chosen as the independent variables with their levels and ranges shown in Table 2.

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Optimization of pulp and acid leaching operations in zinc

2021-4-1  Optimization To optimize, according to the process control plan and also to check the range of output values, there is an intention to maximize the concentration of outlet leaching acid. In the first interval, this amount is considered to be 92 g per liter.

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Optimal design and planning of heap leaching process

Although the process of heap leaching is an established technology for treating minerals, such as copper, gold, silver, uranium and saltpeter, as well as remediating soil, no studies to date have investigated process optimization. This work presents a methodology for the design and planning of heap leaching systems to optimize the process.

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Optimization of metal bio-acid leaching from mobile

2021-9-25  where R is the Cu and Zn leaching efficiencies (%), C 1, M 1, and V 1 are the metal concentrations (mg/L), solid mass and liquor volume in the bio-acid leaching solution, respectively. C 2, M 2, and V 2 are metal concentrations, solid mass, and aqua regia volume, respectively, in aqua regia leaching. Additionally, surface characteristics of the particles from crushed PCBs before and after the

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The reductive leaching of waste lithium ion batteries in

2020-7-20  The surface studies were carried out for samples before and after leaching process to distinguish the surface changes during process. The samples were attached to adhesive carbon tubes and coated with a 30 nm layer of gold before imaging, to take images with high resolution. 2.3. Leaching procedure2.3.1. Optimization and kinetics modelling

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A Combined Method of Leaching and Co-Precipitation for

2020-7-21  A novel recycling process of spent LiNi0.6Co0.2Mn0.2O2 cathode materials has been developed. The process comprises acid leaching followed by regeneration of LiNi0.6Co0.2Mn0.2O2 materials with carbonate co-precipitation. Spent LiNi0.6Co0.2Mn0.2O2 materials were effectively leached in sulfuric acid and hydrogen peroxide solution. The leaching efficiencies were 97.8% for Li, 98.1% for

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Optimization of the leaching process of the printed

2021-8-16  leaching is a popular method to solve this problem. There are some different leaching techniques such as bio-leaching, heap leaching, oxidized leaching, pressure leaching, and also, leaching process can be done using acid or base solutions. Although there

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Optimization of leaching parameters for the extraction of

2014-3-1  The optimization of leaching operation of Rare earth bearing ores is a complex process since many attributes simultaneously affect the operation, with some of them being conflicting in nature. Therefore a proper selection of the leaching process with pertinent attributes is crucial for the user in order to maximize the percentage recovery with

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On the optimization of heap leaching Request PDF

The article discusses the possibility of reducing environmental risks and resources by finding ways to optimize technology solutions with a computer program that simulates the heap leaching process.

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Leaching zinc from spent catalyst: Process optimization

Leaching zinc from spent catalyst: Process optimization using response surface methodology 12 4 3.68 4.50 93.72 independent variables used in process optimization were coded 13 4 2.00 1.98 90.15 14 4 2.00 7.02 93.67 15 4 2.00 4.50 91.61 Table 1 16 4 2.00 4.50 91.62 Compositions of

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Optimizing and evaluating the operational factors

2015-12-8  The influential factors investigated in the cyanide leaching process of gold included the solution pH, the solids percentage, the NaCN concentration, the particle size and the leaching time. The following conclusions can be drawn from this work: (i) The RSM can be considered to be a powerful tool in optimization of the cyanidation process.

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(PDF) Online Optimization of a Gold Extraction Process

A phenomenological dynamic model of gold ore leaching process in agitated tanks is derived and calibrated with a set of industrial data. This model is used to simulate the dynamic behavior of a

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The Investigation of Optimizing Leaching Efficiency of Al in

2020-10-11  Leaching results showed that the leaching efficiency of Al in direct acid leaching was only 22.99%. Process mineralogy showed the complex intertexture and continuous network structure in the SAD. Pretreatment operations were extremely efficient in destroying the structure by physical and chemical interaction.

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A Combined Method of Leaching and Co-Precipitation for

2020-7-21  A Combined Method of Leaching and Co-Precipitation for Recycling Spent Lini0.6Co0.2Mn0.2O2 Cathode Materials: Process Optimization and Performance Aspects JOM ( IF 2.471) Pub Date : 2020-07-21, DOI: 10.1007/s11837-020-04263-9

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Computer modeling of high-pressure leaching process of

2013-10-14  Milovan Milivojevic et al., Computer modeling of high-pressure leaching process of nickel laterite by design of 3 the modern experiment theory (DOE). The optimal experi-mental design is a key advantage of this methodology in comparison to other methods of modeling objects, processes,

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不同方法提取黑水虻油工艺优化及品质比较分析-Process

以黑水虻幼虫为原料,分别采用压榨法、浸出法以及亚临界丁烷萃取法提取黑水虻油,采用单因素实验和正交实验优化了压榨和浸出制油的工艺条件,并比较3种方法的提油率、黑水虻油的理化性质和脂肪酸组成。结果表明:压榨法提取黑水虻油的最佳工艺参数为蒸炒温度140 ℃、蒸炒时间30 min、黑水

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Optimization of the leaching process of the printed

2021-8-16  leaching is a popular method to solve this problem. There are some different leaching techniques such as bio-leaching, heap leaching, oxidized leaching, pressure leaching, and also, leaching process can be done using acid or base solutions. Although there

get price

Leaching zinc from spent catalyst: Process optimization

Process optimization was also performed utilizing the desirability function approach and more than 88.17% copper was recovered at the optimum conditions: ~ 17% acid concentration, ~ 11.3 mL/g

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Optimization of the Heap Leaching Process through

The importance of mine planning is often underestimated. Nonetheless, it is essential in achieving high performance by identifying the potential value of mineral resources and providing an optimal, practical, and realistic strategy for extraction, which considers the greatest quantity of options, materials, and scenarios. Conventional mine planning is based on a mostly deterministic approach

get price

Process optimization and kinetics for leaching of rare

Process optimization and kinetics for leaching of rare earth metals from the spent Ni-metal hydride batteries Waste Manag . 2016 May;51:196-203. doi: 10.1016/j.wasman.2015.12.018.

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Optimization of a Lithium Ion Battery Bioleaching

2019-8-5  To continue optimizing the leaching process to decrease the recovery costs of cobalt from lithium ion battery powders, various other factors were evaluated to test their effect on the leaching capabilities of the bio-lixiviant. These factors included different added molar amounts of a redox

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Optimization of laterites leaching by application of

2018-3-19  Leaching (HPAL) that are operated to recover Ni from its ores. The Caron process employs leaching with ammonia and tolerates higher Mg content than the HPAL process, however, this operation is preceded by the calcination and reduction processes. The HPAL process allows eliminating the

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Process optimization of rare earth and aluminum

2018-2-1  applied magnetic field to enhance RE leaching process, the high cost limited the application in the actual production. In this work, a new leaching agent was developed to optimize the leaching process of RE, which demon-strated potential possibility to replace the most widely used leaching agent ammonium sulfate[19]. Previous

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Optimization of a Lithium Ion Battery Bioleaching Process

2019-7-31  @article{osti_1546738, title = {Optimization of a Lithium Ion Battery Bioleaching Process Utilizing Organic Acids Produced by Gluconobacter oxydans}, author = {Gazzo, David Vincent and Reed, David W.}, abstractNote = {Growing our global economic and environmental focus relies, in part, on our development of a sustainable system to recycle valuable metals.

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Optimizing and evaluating the operational factors

2015-12-8  The influential factors investigated in the cyanide leaching process of gold included the solution pH, the solids percentage, the NaCN concentration, the particle size and the leaching time. The following conclusions can be drawn from this work: (i) The RSM can be considered to be a powerful tool in optimization of the cyanidation process.

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OPTIMIZATION OF FERRIC CHLORIDE LEACHING

2021-6-9  Abstract: Taguchi (L16) experimental design (DOE) was used to optimize the extraction process of copper from chalcopyrite concentrate statistically. A series of experiments involving leaching of copper by ferric chloride in a hydrochloric acidic medium were conducted. Process optimization of the experimental data was

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