pyrometallurgical separation of copper from iron

Nov 14, 2013· The pyrometallurgical process is a method that mixes waste copper slag with various fluxes such as alumina, calcium oxide, magnesium oxide, silica as a slag composition regulator, and carbon as a reducing agent, and then melts the mixture at a high temperature of about 1673–1723 K, thereby separating and recovering iron as an alloy form from ...

zinc, and iron are given below. The reader is cautioned that the following chemical reactions are ... copper dissolves the arsenic. As a result, the metal from the furnace can be less pure than the individual metal grains that were originally in the ground. Gibbs Free Energy ... Pyrometallurgical Equipment Types of Furnaces Shaft Furnace

Iron ore is mined and prepared into "sinter" or pellets for the steel making process. For example, taconite, a common low grade iron ore, is roughly 28 wt% iron in the form of Fe 2 O 3, Fe 3 O 4, and FeCO 3. Using crushing, magnetic separation and other processes, marble-sized pellets with about 50–60% iron are made. Likewise the carbon ...

The metal fr action is primarily copper, iron. ... if required for separation of the copper and precious metals ... Pyrometallurgical process of recycle helps in immediate recovery of direct ...

Pyrometallurgical Separation of Indium Phosphide through the Phosphorous Removal by Iron and the Chlorination Process Utilizing Ammonium Chloride Osamu Terakado1, +1, ... copper indium gallium diselenide,7) CIGS, one of the promising photovoltaic batteries, as well as gallium ...

in chalcopyrite, copper matte, and bornite, while iron distribute in magnetite, fayalite, and pyroxene. The proposed process involves the recovery of iron via magnetic separation from flotation tailings after recovering copper from CEFS by flotation. 72.79% of copper and 20.41% of iron were recycled from CEFS where the grades of copper and iron ...

Iron recovery from copper slag generated during copper production by the pyrometallurgical method has been widely investigated to achieve resource utilization. Liberation and enrichment of metallic iron from reductively roasted copper slag were explored in this work. Results show that metallic iron, quartz solid solution, and cristobalite solid solution are the main phases in reductively ...

3.2.4 Physical Separation 25 3.2.5 Extraction 26 3.2.5.1 Soil W ashing 26 3.2.5.2 Pyrometallurgical Extraction 28 3.2.5.3 In Situ Soil Flushing 29 3.2.5.4 Electrokinetic T reatment 29 3.3 Performance of Available Commercial Technologies 29 3.3.1 Superfund Innovative Technology Evaluation (SITE) Demonstration and Best Demonstrated Available ...

Jan 01, 2008· In the second phase of the process the partial pressure of sulphur dioxide is considered to be maintained at 0.1 atm. Figure II.13.2 shows the calculated relationship between the amounts of iron and sulphur in the matte under these chosen conditions. The relationship between these two variables is a function of the composition of the slag and the relative proportions of nickel and copper in ...

steps (before tapping) in many pyrometallurgical processes, allowing separation of slag and matte/metal. However, industrial Cu smelters [3], Pb reduction smelting furnaces [4,5], ferrochrome ...

Then, copper can be extracted from the thus purified copper sulfide using pyrometallurgical and hydrometallurgical processes known to the skilled person, avoiding the problems normally arising from the presence of admixed iron sulfides. The separation of the copper sulfides and iron sulfides is effected by grinding at first.

Pyrometallurgy, extraction and purification of metals by processes involving the application of heat. The most important operations are roasting, smelting, and refining. Roasting, or heating in air without fusion, transforms sulfide ores into oxides, the sulfur escaping as sulfur dioxide, a gas.

Jul 10, 2017· Iron Collection. Iron is a low-cost collector with strong chemical affinity for PGMs to form a solid solution.66 In iron collection, crushed spent catalysts mixed with iron ore (or metallic iron powder), reducing agent (e.g., coke), and flux (e.g., CaO) are melted in a plasma arc furnace at a temperature of 1500–2000°C or in an electric arc furnace at a temperature of 1450°C, as shown in ...

A cyclic, two-stage process is disclosed for pyrometallurgical recovery of copper as a high-grade matte from molten slag material containing both dissolved and/or entrained copper values. A charge of the copper-bearing slag material is treated in the first stage of the process with a hydrocarbonaceous or hydrogenous reductant in a rotary ...

Sep 22, 2013· separation of cobalt from nickel by solvent extraction with Cyanex 272. The obtained electrolytes have a composition suitable for the extraction of copper, nickel and cobalt by electrowinning. The main advantage of the proposed scheme is the possibility for achievement of a high non-ferrous metals extraction from the alloy and obtaining of ...

· Sep 07, 2020· Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate. Therefore, the recovery of iron from CS utilizes a valuable metal and alleviates the environmental stress caused by stockpile. In this paper, a new method has been developed to realize the enrichment of iron …

resulted in copper and iron extractions of 20% and 52%, respectively, at 20oC, whereas the maximum copper and iron extractions were 60% and 90%, respectively, at 90oC. Also, based on the results depicted in Figure 2 and 3, it can be concluded that the iron minerals are dissolved more easily in sulphuric acid than the copper minerals,

separation of iron . ... impurities, such as copper and iron, are removed from the leach liquor by the precipitation method. ... The best results were obtained by combining pyrometallurgical and ...

Copper slag, which is produced during pyrometallurgical production of copper from copper ores contains materials like iron, alumina, calcium oxide, silica etc. For every tonne of metal production ...

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

This stems from the relative stabilities of nickel and copper sulfides and oxides. It is possible to make copper metal by the oxidation of CU,S at relatively low temperatures (1.200·1,300°C); a Similar process for nickel requires temperatures in excess of 1.600°C. Pyrometallurgical separation of nickel from copper is difficult.

An earlier work noted that magnetic separation is a feasible way to recover iron from the tailings of waste copper slag flotation. Unfortunately, the iron grade of magnetic products and the recovery of iron by the magnetic separation process is relatively low, only 52.21% and 38.09%, respectively, due to the

t is considered an actuality and problems of the Copper-smelting slags processing. It is formulated the demands, which the slag processing technology must to conform. It is given the ground for preferableness of the pyrometallurgical method, which it is caused the next factors: a) variety of slag composition, forming on the Copper founding plants and b) necessity of its selective proceeding ...

Feb 20, 2021· Copper metal is mainly produced from sulfide minerals, such as chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), and chalcocite (Cu 2 S), through pyrometallurgical methods, including smelting, converting, and refining.1 Iron in sulfide minerals is removed by forming molten slag of fayalite during smelting and converting. This molten slag is called copper slag in the industry.

Pyrometallurgy Basic Principle. The basic premise of most pyrometallurgical operations is simple: high-temperature chemistry is employed to segregate valuable metals in one phase while rejecting gangue and impurities in another phase. In most instances, both phases are molten (such as the matte and slag in a conventional copper smelting operation).

Mar 11, 2020· In the pyrometallurgical processes, ... The generic solution based on sample 2 contains no copper or iron because it was only used for experiments to separate cobalt, nickel and manganese. ... The usage of solvent extraction for the copper separation has the advantage of a partial recirculation of the stripped copper sulfate solution to the ...

US3258330A US21843462A US3258330A US 3258330 A US3258330 A US 3258330A US 21843462 A US21843462 A US 21843462A US 3258330 A US3258330 A US 3258330A Authority US United States Prior art keywords copper oxygen molten blowing bath Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides ...

A process for recovering iron from preliminarily decopperized molten copper smelter slags having an initial composition which includes iron oxide, silica, and aluminum oxide as the major constituents. These constituents are initially present in the range of 40-70 percent FeO, 25-40 percent SiO 2 …

About 80 % of primary copper production comes from low-grade or poor sulfide ores. After enrichment steps, the copper concentrates are usually treated by pyrometallurgical methods. Generally, copper extraction follows the sequence (see Figure below): 1. Beneficiation by froth flotation of ore to give copper concentrate