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sulfide type copper ore acid leaching

Leaching of sulfide copper ore in a NaCl–H2SO4–O2 media ...

A study was made of the leaching of a sulfide copper ore in a NaCl–H 2 SO 4 –O 2 media after pre-treatment by agglomeration with H 2 SO 4(conc) and NaCl. The leaching variables evaluated included the amount of NaCl to be employed, the percentage of solids in the leaching solution, particle size of the raw mineral to be leached, and the preferable method of agitation in the leaching system.

Effect of Pretreatment on Leaching Primary Copper Sulfide ...

This study considers accelerating chalcopyrite dissolution by pretreating the ore before leaching, using a longer repose time and shorter leaching time. This has been done before with copper oxide ores [7] and secondary copper sulfide ores [8]. With copper oxide, agglomeration and acid curing process are commonly used before leaching.

(PDF) LEACHING OF A ROASTED COPPER SULFIDE ORE | …

Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition. The problem is to convert the sulphide into the oxide form. This can be done

Sulfide Ores

Nickel sulfide ores are processed by heap leaching in Sotkama, eastern Finland (Talvivaara, 2011).The process entails the following: (a) open-pit mining of 0.2% Ni, 0.5% Zn, 0.1% Cu, and 0.02% Co sulfide ore; (b) four-stage crushing; (c) rotary kiln agglomeration with sulfuric acid;

Optimization of parameters affecting recovery of copper ...

of copper from low-grade sulfide ores by bioleaching is essential. The physical, chemical, and microbial factors involved in a leaching environment, thecharacteristics of ore for leaching, and the type of leaching process are the most important factors affecting the microbial oxidation of metals. Some

What is the best method for sulfide copper leaching?

One of the important subject in copper sulfide leaching, Ore Characterisation and related method. Bacteria Heap Leaching and Oxidative bacterial heap leaching two methods that apply for low grade ...

Copper Mining and Processing: Processing of Copper Ores ...

Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...

oxide ore leaching

Heap Leaching Copper By Sulfuric Acid - clubhauszug94.ch. Acid Leaching – Copper Ore Treatment Method. The flowsheet discussed in this study is for treatment of 100 tons per day oxide-sulfide copper ore by the leaching process using sulfuric acid-ferric sulfate solvent. This flowsheet would also be suitable for a larger …

Acid Leaching

The flowsheet discussed in this study is for treatment of 100 tons per day oxide-sulfide copper ore by the leaching process using sulfuric acid-ferric sulfate solvent. This flowsheet would also be suitable for a larger tonnage by proper sizing of the various units of equipment.

copper sulphide leaching process,planning limestone ...

Heap Leaching Oxide and Sulfide Copper Ores. Heap leaching is a simple means of recovering copper from oxide and oxide-sulfide ores. Although this method requires relatively low capital investment, it suffers from low copper recoveries and relatively high acid consumption. The objectives of this study were (1) to ...

Copper Sulfide

The leaching of copper sulfide and copper oxide ores entails partial dissolution to cupric sulfate with sulfuric acid and iron sulfate. The presence of pyrites in many ore deposits, and its reaction with water and oxygen to form iron sulfate and sulfuric acid, creates an important source of acid.

Procedure Residual Copper Soluble Analysis

With the exception of chrysocola, leaching behavior of copper-bearing minerals under ferric-iron/sulfuric acid leaching is generally closely modelled by dissolution with sodium cyanide of assay-type samples. Primary sulfide minerals, such as chalcopyrite, are essentially unleachable under laboratory or commercial-scale conditions using any of ...

(PDF) Treatment of Sulfide Minerals by Oxidative Leaching ...

copper, zinc, nickel and cobalt in acid oxidative leaching of chalcopyrite at the presence of deep-sea manganese nodules as oxidant.'' Hydrometallurgy, 77(1–2), pp. 51–59.

Acid Leaching Views

Pdf Effect Of Pretreatment On Leaching Primary Copper. The aim of this study was to improve the dissolution of copper sulfide ore composed mainly of chalcopyrite 1.21 wt and bornite 0.54 wt using a pretreatment before leaching. The effect of the pretreatment on copper sulfide dissolution was investigated using different types of leaching.

Copper Mining and Extraction: Oxide Ores

Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an important by-product of this process is used for the extraction of oxide ores. Pyroprocessing Sulfide Ores Provides Acid for Leaching. The process used to treat sulfide copper ores begins at the mine ...

Copper Ore Types: Sulfides vs. Oxides | An Investor's ...

As with oxide ores, SX-EW tech is used to recover copper from a pregnant leach solution. Secondary sulfides, which are formed by supergene secondary enrichment, are resistant to sulfuric leaching ...

Bioleaching

Bioleaching is the extraction of metals from their ores through the use of living organisms.This is much cleaner than the traditional heap leaching using cyanide. Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper, zinc, lead, arsenic, antimony, nickel, molybdenum, gold, silver, and cobalt

Heap leaching

This method is an acid heap leaching method like that of the copper method in that it utilises sulfuric acid instead of cyanide solution to dissolve the target minerals from crushed ore. The amount of sulfuric acid required is much higher than for copper ores, as high as 1,000 kg of acid per tonne of ore, but 500 kg is more common.

How Hydrometallurgy and the SX/EW Process Made Copper the ...

Beginning in the mid 1980s a new technology, commonly known as the leach-solvent extraction-electrowinning process or, SX/EW Process, was widely adopted. This new copper technology utilizes smelter acid to produce copper from oxidized ores and mine wastes. Today, worldwide, approximately 20% of all copper produced is produced by this is process.

Copper extraction

Copper Ore Types: Sulfides vs. Oxides | Investing News Network

Acid leaching of oxide–sulfide copper ore prior the ...

453 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

12.3 Primary Copper Smelting

Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining. 12.3.2 Process Description2-4 Mining produces ores with less than 1 percent copper. Concentration is accomplished at the

Copper Ore Types: Sulfides versus Oxides | Nasdaq

Apr 23, 2011· Both ore types can be economically mined, however, the most common source of copper ore is the sulfide ore mineral chalcopyrite, which accounts for about 50 percent of copper production.

Implementation and practice of an integrated process to ...

For copper sulfide ores, heap bioleaching has been applied in industry for several decades; most of the copper produced through bioleaching is from heap or dump/stockpile leaching of secondary copper sulfide ores (Kaksonen et al., 2018). The Zijinshan gold and copper mine is located in Fujian province, southeast China.