The main important parameters in ammonia leaching of copper tailings have been prioritized as solidliquid ratio, leaching time, temperature and the concentration of ammonia. The optimum leaching conditions are found to be 41 liquidsolid ratio, 4h leaching time, 40 C, 3 molL NH4 . More than 75 of copper was effectively recovered.
Aug 03, 2010 The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammoniaammonium chloride solutions has been studied. The tailings belong to a low-grade and high-alkaline copper ore. The effect of leaching time, the concentration of ammonia, solidliquid ratio and temperature were investigated. The main important parameters in ammonia leaching
In this study, the leaching effect of copper oxide ore was investigated using ammonium chloride solution as leaching agent. The effects of temperature, concentration of ammonium chloride, average particle size and stirring speed on the leaching of copper oxide ore were investigated. The leaching rate increased with increasing solution temperature, concentration, and stirring speed as well as ...
leaching, figure the extraction. This is substantially the method of testing a gold ore for treatment with a cyanide solution. This is the method that was used in this case for testing the possibility of leaching the copper tailings. The ore used,was a low grade copper tailing. The
potential nitrate leaching from mine tailings. MATERIALS AND METHODS A leaching column experiment was established in a greenhouse. The mine tail-ings were taken from Las T rtolas tailing dam located in Central Chile 32 12 S, 70 10 W. This material was air dried, passed through a 5 mm sieve and homoge-nized.
ver leaching. Some researches Rivera et al., 2015 have found that the kinetics of leaching of silver using thiosulfate are controlled by the mass transfer of oxygen to the solidliquid interface. Other studies have also been conducted on silver and silver sulde leaching in a thiosulfateammoniumcupric ion system Briones and Lapidus,
Jul 16, 2020 Decomposition of Cyanide from Gold Leaching Tailings by Using Sodium Metabisulphite and Hydrogen Peroxide DongzhuangHou , 1 LangLiu , 2 QixingYang, 2 BoZhang, 2 HuafuQiu, 2 ShishanRuan, 2,3
leaching behavior with respect to iron has rarely been reported. Herein, a theoretical analysis of the leaching of iron from copper tailings was performed. Then, the eects of key factors on iron leaching were investigated, including the reaction temperature, sulfuric acid concentration, ratio of solid to liquid SL ratio, and stirring speed.
Leaching Of Copper From Tailings Using Ammonia . Leaching of copper from tailings using ammoniaammonium. Aug 03, 2010 Abstract The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammoniaammonium chloride solutions has been studied The tailings belong to a low-grade and high-alkaline copper ore The effect of leaching time,
Apr 01, 2013 The experiments of agitation leaching were carried out in aqueous ammoniaammonium carbonate solution, to recover copper from the flotation tailings of waste copper oxide residue. The main copper minerals contained in the flotation tailings are chrysocolla, malachite, and cuprite, with the copper grade of 1.12. Effects of lixiviant concentration, solidtoliquid ratio, stirring speed, and ...
pressure, temperature, ammonia concentration, ammonium sulfate concentration, solid to liquid ratio and stirring rate on the recovery of Cu, Ni, Co, Zn and Ag during am-monia pressure leaching of Lubin shale middlings - tailings from 1 st cleaning at Lubin Concentrator. Ammonia pressure leaching of Lubin shale middlings was selected as an alterna-
Main Journal of The Institution of Engineers India Series D Ammonia Leaching A New Approach of Copper Industry in Hydrometallurgical Processes Journal of The Institution of Engineers India Series D 2013 10 Vol. 94 Iss. 2
leaching, ammonia leaching has the merits of high selectivity over gang minerals, low corrosivity and application in alkaline conditions 8. MUIR et al 8 demonstrated the removal of copper up to 95 from an oxidised tailings via ammonia leaching, which resulted in a substantially reduced reagent consumption from 30
Me too was currently in a study how to maximize the recovery of gold in a gold-copper ore and tailing. I tested already using sulfuric acid leaching, ammonia bicarbonate leaching and ammonia sulfate leaching. Base from my own observation ammonia bicarbonate is good for a oxide ore or tailing and ammonium sulfate for sulfide one.
Feb 05, 2021 Ammonia leaching has been used in the past to recover copper from copper oxide minerals associated with carbonate gangue material. Descriptions of a former ammonia leaching operation have been given by Duggan and Eddy. Leaching of copper minerals by cyanide solutions has been proposed by Lower and Booth, but as yet has not been used in practice.
Tailing amp Heap Leach Facility Management Standard Document No NEM-SER-STA-002 SampER Effective Date 01142020 Page No Page 1 of 5 Tailing amp Heap Leach Facility Management Standard THIS DOCUMENT IS UNCONTROLLED IN HARD COPY. IN THE EVENT OF CONFLICTS BETWEEN THE TRANSLATIONS OF THE DOCUMENT, THE ENGLISH VERSION SHALL PREVAIL.
leach tanks, adsorption tanks, tailing storage facility surfaces and return water dams. The calculated model predictions for K OL were in excellent agreement with the measured test work data. Finally, the prediction model was validated at the leach and adsorption sections of a selected gold plant and a selected tailings storage facility.
Nov 04, 2019 In the following leaching process, the silicon components in the tailings are not soluble in water. The separation of iron, magnesium, and aluminum are precipitated at di erent pH levels 27. Boron is recycled based on the solubility di erences between boric acid and ammonium sulfate 28,29.
The U.S. Department of Energys Office of Scientific and Technical Information
Yangibana Tailings Leach Study Summary Report 3 15 weeks. The trajectory of the leachate-F and leachate-Mo concentrations is similar to the TSF 1 leach tests and radionuclide levels remained well below 1Bqg. However, due to the slow nature of the leaching, F and Mo have not yet reached levels below the ANZECC Stock
HCl leaching of the tailings at the SL ratio of 1100 . 2. In this case, 3M HCl leach produced approximately 58 nickel which was slightly lower than its counterpart, 1M HCl, with 65 nickel. Since 3M HCl leach is more concentrated than 1M HCl, it was expected to dissolve more of nickel than 1M HCl leach. Sulphuric acid leach of the tailings ...
Aug 05, 2014 Tailings ponds must be designed to minimize interactions between tailings and the local environment to prevent acid generation, metal leaching, and
Column leaching test. During the column leaching process with H 2 SO 4, the pH value of the leach solution declined rapidly and was then maintained at 1.5 after 5 days as in Figure 4, the higher pH at the beginning was a reason of remaining washing water in the column. The uranium recoveries were 83.90.
chemical components of the leaching process ammonium thiosulphate and ammonium sulphate are common fertilizers, which opens up the additional possibility of using mine tailings solutions in agricultural applications, in regions of the world where the local infrastructure and environmental regulations are favourable.