A selective acid leaching process was then used to recover the copper content of the residue after filtration. In the second stage, an additional 1 N of sulphuric acid was added to the suspension in the selective leaching process, and the pH value was controlled at 1.5-2.0. The reagent sodium hydroxide (2 N) was used as leachate at a pH greater ...
Read morethe leaching process of copper oxide ore. Moreover, an experimental design technique, Response Surface Method (RSM), is employed to model, optimize, and evaluate the e ects and interactions of the in uential parameters on recovery of copper. 2. Experimental descriptions 2.1. Materials Copper oxide ore was collected from the Fariman
Read moreThese results indicate that leaching is not a simple process and that anions may play an important role on the rate of copper oxide dissolution. In corrosion field, chloride, sulfate and nitrate ions are considered as aggressive elements for metals that involve their corrosion [18], [19], [20] .
Read moreOxide Copper Leach Modeling. In recent years interest in hydrometallurgy, particularly in the case of in-situ leaching and solution mining has remained at a high level. There are several studies published on the development of scale-up principles. D'Andrea and Runke described research on in-situ copper leaching at the Emerald Isle Mine whose ...
Read moreHeap leaching & SX-EW is a method of extracting pure copper from oxide ore by placing the crushed ore on a pad in a heap and spraying the leaching solution, sulphuric acid, over the heap. The acid trickles through the heap and dissolves the copper mineral into solution. The leach solution collects at the bottom of the pad in a collection pond.
Read moreOxide minerals as described formerly can be treated by the hydrometallurgy method that contains three main steps 1) Leaching, 2) Solvent Extraction (SX) and 3) Electrowinning (EW) [7] [9] [10] There are other methods to recover copper after leaching [5].
Read moreThe smelter for sulfide ores produces sulfur dioxide gas. This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide ores. Scrubbing sulfur dioxide also protects the environment. A by-product of the smelting and converting furnaces is sulfuric acid. In what looks like a lucky coincidence, sulfuric acid is needed ...
Read more453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia
Read moreOxide copper ore, mixed oxide-sulphide ores and low-grade copper sulphide ore, which, for economic reasons, cannot be enriched by flotation, may be processed by leaching methods. Agents for leaching copper can be acid, base, or salt solutions. Of all of these agents, sulphuric acid has been given the
Read moreLeaching. The process requires the use of hydrochloric acid as leaching solution when treating copper ores, which may be produced in the plant itself. The operation is very simple, using sulphuric acid and NaCl as raw materials.
Read moreThe aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H 2 SO 4) leaching. The ore with 4.21% copper grade used in this study was obtained from Çorum-Dangaz region of Turkey. Native copper, cuprite (Cu 2 O), tenorite (CuO), and malachite (Cu 2 (OH) 2 /CO 3) were the
Read moreThese results indicate that leaching is not a simple process and that anions may play an important role on the rate of copper oxide dissolution. In corrosion field, chloride, sulfate and nitrate ions are considered as aggressive elements for metals that involve their corrosion [18], [19], [20] .
Read moreA required amount of 75 g/L. sulphuric acid solution was used and 5 g of the ground copper oxide ore with a solid to liquid. ratio of 13%. Leaching parameters such as leaching time from 0.25 – 4 ...
Read moreThe copper oxide ore sample used for the experiments was obtained from the Katanga province, D.R. Congo. Commercial grade reagent, 98% H 2 SO 4 was used for the leaching tests. The sample was subjected to particle size distribution analysis which indicated that the ore sample had a P80 particle diameter of 62.23 µm.
Read moreCopper Oxide Leaching GlyLeachTM GLYLEACHTM & GLYCATTM INTRODUCTION GlyLeachTM and GlyCatTM are environmentally benign hydrometallurgical processes that will leach base and precious metals. Glycine is the simplest amino acid and is available in bulk quantities. Its unique properties can offer substantial advantages over conventional lixiviants.
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