Menu
Agitation of course brings copper more quickly into solution than percolation, and one advantage of this rapid action is that sulphuric acid solutions manifest a selective action, attacking oxidized copper minerals before the iron and alumina content of an ore. ... Copper Leaching Equipment. Concrete as a material for construction of vats ...
to achieve the optimal leaching conditions, an agitation speed of 400 rpm was used to ensure that the raw material was maintained in suspension (Hoffmann, 2000). Pressure . Pressure leaching of decopperized copper electrorefining anode slimes in strong acid ...
OneMine is the collective online digital library of mining and minerals technical papers, periodicals, books, and publications from professional societies and government records from all over the globe.
A description of the agitation leach plant used for treating gold-copper ores at Anglo Asian Mining's Gedabek mine in Azerbaijan is given. The plant employs a unique resin-in-pulp system for gold recovery. The integration of the agitation leach plant into the existing heap leach/ADR/SART operation is described. Operational problems
agitation leach plant, including resin-in-pulp solution processing, was designed, built, and commissioned by July 2013. Following the introduction of the agitation leach plant, soluble copper became a much more important issue at Gedabek. Grinding the ore to minus 75µm for agitation leaching, instead of crushing it
Agitated leaching - intermediate- to high-grade, chalcopyrite concentrates are deposited in a tank and leached using mechanical agitation. (Experimental only) The raw material type also determines the type of microorganisms involved: Waste dump leaching uses mesophilic (ambient temperature) microorganisms, i.e., bacteria.
Each mineral, including the sea sand, was ground to minus 100 mesh. In the case of metallic copper, clean C. P. copper foil 0.002 inch thick was used. The experiments were made under favorable conditions for cyanidation, which included continuous agitation in alkaline cyanide solution in the presence of excess air.
Following the introduction of the agitation leach plant, soluble copper became a much more important issue at Gedabek. Grinding the ore to minus 75 µm for agitation leaching, instead of crushing it to minus 25 mm for heap leaching, exposed much more of the copper minerals to …
Copper Agitated Leaching and cementation process of copper problem: The treatment of copper ores, both oxides and sulfides by means of flotation, hydrometallurgy or other processes has been well established for many years. Flotation has been applied generally to the treatment of sulfide ores, both in small and large scale operations.
Acid leaching of flotation concentrate of oxide copper ore containing mainly of malachite was performed in a standard agitation tank with various parameters. The effects of solid to liquid ratio, sulfuric acid concentration, agitation speed, leaching temperature and time were examined to get proper conditions.
Leaching for Copper-Gold Ores Farhang Hedjazi and A. John Monhemius* Anglo Asian Mining plc, Baku, Azerbaijan ABSTRACT A description of the agitation leach plant used for treating gold-copper ores at Anglo Asian Mining's Gedabek mine in Azerbaijan is given. The plant employs a unique resin-in-pulp system for gold recovery.
High market value of copper and ease of practice were the motivating forces on studying the leaching kinetics under controlled conditions. In this regard, first, the influencing parameters such as the acid concentration, solid-to-liquid ratio, agitation speed, particle size, and temperature were assessed on the leaching fraction of copper. The ...
Leach copper production, by mine 18 Company rank in 1992, by copper and molybdenum production 20 Mine rank in 1992, by copper and molybdenum production 21 ... 6.8 mile conveyor. agitation leach vats, and a SX-EW plant Production was restarted at the Twin Buttes Mine in 1988 using the conveyor. to provide additional sulfide feed to the Sierrita ...
This research was aimed to investigate the leaching behavior of zinc and copper from a porcelain stone tailings sample using RSM-CCD modeling. The synergetic and individual effects of five main factors including liquid/solid ratio, sulfuric acid concentration, agitation speed, leaching time, and tem …
2.3. Agitation leaching. Batch agitation leaching tests were performed using a 1 L polypropylene beaker provided with a pH-temperature electrode to determine the maximum solubilisation yield of cobalt and copper and the proportion of trivalent cobalt in the ore.A total of 200 mL of 75 g/L H 2 SO 4 aqueous solution was placed in the beaker and a weighted ore sample (15% (w/v)) was added.
ing the heating and agitation of the input suspension. The kinetics of copper minerals leaching was recently published by several authors, for example Sokić at al. kinetics of copper leaching from chalcopyrite [7], Bingol and Canbazoglu kinetics of copper leaching from mala-chite [10,11], while Quast has published the kinetics of
Vat leaching is used to extract copper from crushed, nonporous, oxide ore in large tanks or vats. Agitation leaching involves the rapid leaching of ore concentrate or roaster calcine in agitated tanks. Vat and agitation leaching are generally more rapid, …
A copper product containing more than 99.9% copper was obtained by using the process: flotation-agitation leaching-solvent extraction-electro-winning. View Show abstract
Heap leaching was rejected due to expected lower recoveries (compared to agitation leach) and concern about oxidation of the barren pyrite with resulting formation of large excesses of acid. Atmospheric ferric sulfate leaching was rejected due to concerns about ferric regeneration and the inefficiency of oxygen/air use in atmospheric processing.
Sulphuric acid agitation and column leaching tests of an oxidised copper-cobalt-bearing ore (1.44% Cu and 1.04% Co) were performed to investigate its amenability to copper and cobalt metals extraction under reducing conditions.
The agitation leaching method is to concentrate the slurry, obtained after grinding and classifying of the gold-containing ore, to a suitable concentration, place it in a leaching tank, add a cyanide solution, and aerate to carry out leaching. The main equipment used in the agitation leaching process is a cyanide leaching tank.
Agitation leaching : A process where the soil is slurried with the extraction fluid for a period of time. When equilibrium between the metal on the soils surface and the metal contained by the solution is approached, the solubilization of the metal in the soil is slowed, and the extraction is considered to be
Therefore, hydrochloric acid leaching with aeration was performed to investigate the leaching behaviors of copper and antimony. The leaching efficiency of Cu increased with increasing agitation speed, temperature, HCl concentration, and the introduction ratio of O2, but also with decreasing pulp density.
Agitation leaching tank&Product Structure High efficiency agitation tank is mainly applied in slurry stirring before floatation, chemical and construction industry, cyanide chemical plant, sewage treatment plant, and coal plant etc. Xinhai recommended an efficient agitation tank, the equipment has big diameter of umbrella impeller, the linear velocity is fast, which makes the even mixing ...
In the present paper, the leaching of copper from printed circuit boards (PCBs) using sulfuric acid with Cu2+ and O2 is proposed. The effects of various process parameters such as agitation speed, temperature, the type and the flow rate of gas, initial Cu2+ concentration, and pulp density were investigated to examine the dissolution behavior of Cu from PCBs in 1 mol/L sulfuric acid.
The condition of leaching process including particle size [10,11], time [12], leaching medium [13,14], agitation [15, 16], temperature [17][18][19], and oxidizing agent are the most important ...
agitation leach plant, including resin-in-pulp solution processing, was designed, built, and commissioned by July 2013. Following the introduction of the agitation leach plant, soluble copper became a much more important issue at Gedabek. Grinding the ore to minus 75 µm for …
After 150 minutes of leaching, the extent of leaching of copper from the ore increased from 72 pct to 89.8 pct when the agitation speed increased from 200 to 500 rpm. The experimental findings indicate that the agitation speed is a major factor in the leaching of the malachite ore.
The main objective was to leach copper and any remaining nickel while concentrating precious metals in the solids. The material was characterised and a potential method i.e. medium-temperature sulphate based pressure leaching was tested for the material. In particular, the effects of agitation, temperature and iron hydrolysis were investigated ...
A hydrometallurgical process for treating slag material, especially copper smelter slag material, comprises vigorously mixing the slag material with about one part by weight of sulfuric acid and about one part by weight of water for each part by weight of the slag material, and allowing the resulting mixture to react to produce a dry, solid material, containing the metal values of the slag in ...
Effective volume per leach reactor 3 Agitation power (with oxygen) 165 t/h 8 h 8 350 m 1.4 kW/m3 Installed motor size Solids concentration Copper leach extraction Leach temperature ... required for the copper leaching process (Dreisinger, 2006). Leach reactors are operated at atmospheric pressure near the boiling point of the slurry. The leach
Vat leaching is used to extract copper from crushed, nonporous, oxide ore in large tanks or vats. Agitation leaching involves the rapid leaching of ore concentrate or roaster calcine in agitated tanks. Vat and agitation leaching are generally more rapid, …
A process for the extraction of copper from a sulphide copper ore or concentrate comprises the steps of subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure to obtain a resulting acidic leach liquor containing dissolved copper and reducing the acidity of the resulting acidic leach liquor by effecting percolation leaching of a bed of low-grade copper ...
In order to determine the optimal process parameters of agitation leaching and provide industrial process design parameters, experiments were carried out on leaching behaviors of copper oxide ore ...
A process for the extraction of copper from a copper ore or concentrate comprises first subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure in the presence of oxygen and water to obtain a resulting acidic leach liquor which contains dissolved copper. The acidity of the resulting acidic leach liquor is then reduced by affecting percolation leaching of ...
3.1.1 Effects of agitation rate on leaching process of copper At leaching time of 1 and 3 h, and the mass ratio of liquid to solid of 5׃1, H2SO4 concentration of 50 g/L and core sample granularity of 0.200−0.125 mm, the influence of agitation rate on the leaching efficiency of copper was evaluated at 95 ℃. The results are shown in Fig.1.
