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percolation leaching of copper ore
Ammoniacal Percolation Leaching of Copper Ores:
2013-7-18 Abstract. The general feasibility of ammoniacal percolation leaching of copper sulphide ores has been demonstrated. The rates are comparable to those of conventional ferric sulphate-sulphuric acid systems, but without the attendant problems of carbonate or iron dissolution, For the ore column heights studied, the copper leaching rate increased approximately as the square root of the total NH 3
Percolation Leaching of a Chalcopyrite-Bearing Ore at
granitic copper ore was obtained from an Arizona copper mineo A portion of the sample Has used for the le.ach test. The sample contained 0.77 pct Cu, which was entirely in the form of chalcopyrite. The pyrite content was 2.6 pct. Al though ore for dump leaching may contain
The current state and future directions of percolation
2018-8-15 The main mining operations contributing to the production of gold, copper, REEs, and uranium using percolation leaching (conventional heap and bio-leaching, dump and in-situ leaching) in China’s mining sector are discussed to highlight the ore types, operational conditions and key metal extraction aspects.
Agitated Copper Leaching & Cementation Process
2016-4-14 PREPARATION OF THE COPPER ORE. This study is limited in general to percolation leaching as it is the most widely used method to give proper contact of solvent with the ore to effect extraction of the copper. One of the important factors in percolation leaching is the size reduction necessary for copper
(PDF) Percolation bacterial leaching of low-grade
About 0.09% dissolution of copper from the ore body per day was obtained from the leaching experiments. The bioleach liquor obtained after leaching was processed through solvent extraction and
What Is the Percolation Leaching Process? Xinhai
2020-5-11 The percolation leaching process is a kind of leaching method in which the leaching agent penetrates the fixed ore bed in a top-down or horizontal manner by means of gravity or pressure. It is the key to ensuring the economic benefit of the concentrator to choose the appropriate percolation leaching
Percolation leaching method Keyes, Harmon E.
It is generally known in metallurgical leaching practice that there is a minimum degree of fineness to which ore particles may be crushed for subsequent percolation leaching. The reason for this is because the leaching column becomes clogged by the fine material, thus preventing the desired rate of
Agitation and column leaching studies of oxidised copper
2017-9-1 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.
Crushed ore agglomeration and its control for heap leach
2013-2-1 Highlights Crushed ore agglomeration as a pretreatment step for heap leaching is reviewed. The acceptance of binder is limited due to the lack of acid-tolerant binders. Concise overviews of quality control and characterization tools are provided. Different agglomeration-heap leaching systems are summarized. HPGR grinding-agglomeration may have some advantages.
Acid Leaching Of Oxidized Copper Ores By Downward
Acid Leaching Of Oxidized Copper Ores By Downward Percolation. Download full Acid Leaching Of Oxidized Copper Ores By Downward Percolation Book or read online anytime anywhere, Available in PDF, ePub and Kindle. Click Get Books and find your favorite books in the online library. Create free account to access unlimited books, fast download and
percolation leaching of copper ore aubergedesrives.fr
Acid Leaching Copper Ore Treatment Method. May 23, 2017· PREPARATION OF THE COPPER ORE. This study is limited in general to percolation leaching as it is the most widely used method to give proper contact of solvent with the ore to effect extraction of the copper.
(PDF) Percolation bacterial leaching of low-grade
About 0.09% dissolution of copper from the ore body per day was obtained from the leaching experiments. The bioleach liquor obtained after leaching was processed through solvent extraction and
Percolation bacterial leaching of low-grade chalcopyrite
2008-6-18 Percolation bacterial leaching of low-grade chalcopyrite using acidophilic microorganisms Although extensive works have been reported either with copper or copper-zinc ore, the literature is rather scanty regarding the effect of various parameters which actually determine the rate process.
Percolation leaching of a chalcopyrite-bearing ore at
2021-8-25 An ore sample containing 0.77 pct cu was leached in a fiberglass column by downward percolation of acidified ferric sulfate solutions. Three sets of leaching conditions were investigated: (1) ambient temperature leaching, (2) elevated temperature (50 deg to 60 deg c) leaching, and (3) elevated temperature leaching after inoculation with
Investigation of Affecting Parameters on Heap Leaching
Most affecting parameters on copper extraction in heap leaching method are ore and gangue mineralogy, size distribution, leaching time, percolation, irrigation flow rate, temperature and concentration that some of them are uncontrollable [13]. In this study effect of ore size distribution, acid
Oxided Copper Ore Leaching
2019-10-1 The copper contents in the solutions was from 22 to 26 grs/l. The iron contents in ferrous ions fluctuated between 2 and 5 grs/l, the highest figures corresponding to the starting solution. Washing of the Solutions. The solutions from the leaching process contain more or less Fe2O3 or Al2O3 which depends on the characteristics of the ore being
Dynamics of leaching a uniformly fissured ore body
1. Dimensionless criteria and numbers have been derived, the numerical values of which determine the mass transfer processes during the percolation leaching of a packing of coarse ore particles. The rate of chemical dissolution and the mechanism of transfer of the mineral into a soluble form have been considered. 2. As an example, the leaching of a copper sulfide ore with sulfuric acid has
Agglomeration and leaching behaviors of copper oxides
2020-3-6 Agglomeration and leaching behaviors of copper oxides with different chemical binders. 1. 2. 3. The chemical binder is one of the critical factors affecting ore agglomeration behavior and leaching efficiency. In this study, we investigated the effect of the type of binder and mass fraction of the H 2 SO 4 solution used on the curing, soaking
The effects of simulated stacking phenomena on the
2019-1-15 Unstratified and artificially stratified samples of oxide-copper ore were percolated with water followed by acid leaching in a custom-made laboratory
(PDF) Percolation bacterial leaching of low-grade
About 0.09% dissolution of copper from the ore body per day was obtained from the leaching experiments. The bioleach liquor obtained after leaching was processed through solvent extraction and
Copper Oxide Leaching Mining & Process Solutions
2020-12-11 Percolation Rate Acid Percolation Rate Glycine 1 19% 2% 1L in 26mins 1L in 2mins 2 4% 1% 1L in 2mins 1L in 1min Slump and percolation tests were carried out on two copper oxides measured side by side for slump and percolation rates. Slumping for acid leaching shown to be as high as 20% slumping for glycine leaching this figure is less than 2%.
Bacterial leaching Indian Academy of Sciences
2016-5-17 Percolation leaching involves the percola- tion of a lixiviant through a static bed, whereas agitation leach- Typically, copper ore mined from open pits is segregated, higher-grade material is concen- trated to produce feed for smelting, while the lower-grade ore is subjected to leaching. The ore is piled on an impermeable
Dynamics of leaching a uniformly fissured ore body
1. Dimensionless criteria and numbers have been derived, the numerical values of which determine the mass transfer processes during the percolation leaching of a packing of coarse ore particles. The rate of chemical dissolution and the mechanism of transfer of the mineral into a soluble form have been considered. 2. As an example, the leaching of a copper sulfide ore with sulfuric acid has
Percolation leaching of a chalcopyrite-bearing ore at
2021-8-25 An ore sample containing 0.77 pct cu was leached in a fiberglass column by downward percolation of acidified ferric sulfate solutions. Three sets of leaching conditions were investigated: (1) ambient temperature leaching, (2) elevated temperature (50 deg to 60 deg c) leaching, and (3) elevated temperature leaching after inoculation with
Investigation of Affecting Parameters on Heap Leaching
Most affecting parameters on copper extraction in heap leaching method are ore and gangue mineralogy, size distribution, leaching time, percolation, irrigation flow rate, temperature and concentration that some of them are uncontrollable [13]. In this study effect of ore size distribution, acid
OPTIMIZING OF LIXIVIANT AND REDUCTANT ON THE
2015-8-11 - Percolation leaching of copper-cobalt oxidized ores has been demonstrated, as an altemative to actual sulphidization-flotation process at Luiswishi deposit New concentrator of Kipushi (Republic Democratic of Congo). Leaching test in column have demonstrated better recovery compared with leaching in stirred tank, which
The progression of metallurgical testwork during heap
2009-10-15 heap leaching are poor percolation due to the presence of swelling clays, and high gangue acid consumptions. Percolation may be improved by agglomerating with acid or binder, and by minimizing ore compaction during stacking, for example by using conveyors instead of trucks.
HEAP LEACHING Technology options and innovation for
2021-3-2 The objectives of any copper heap bacterial leaching should encompass the following main points: 1) Characterise ore for particle size, elemental composition, mineralogy, acid consumption and bioleaching potential. 2) Evaluate copper bioleaching in columns with crushed ore. 3) Characterise heat generation during sulfide oxidation
Agglomeration and leaching behaviors of copper oxides
2021-7-18 The chemical binder is one of the critical factors affecting ore agglomeration behavior and leaching efficiency. In this study, we investigated the effect of the type of binder and mass fraction of the H 2 SO 4 solution used on the curing, soaking, and leaching behavior of agglomerations. The results revealed that Portland cement (3CaO·SiO 2, 2CaO·SiO 2, and 3CaO·Al 2 O 3) was the optimal
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