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Extraction of Iron | Metallurgy | Blast Furnace and Reactions

The extraction of iron from its ore is a long and subdued process, that helps in separating the useful components from the waste materials such as slag. What happens in the Blast Furnace? The purpose of a Blast Furnace is to reduce the concentrated ore chemically to its liquid metal state.

Vacuum Furnace Melting Applications (VIM/VAR)ECM USA ...

Required technologies could be cold crucible (made of cooled copper or cooled stainless steel), hot crucible (graphite or other) or the use of susceptor or radiating muffle to heat materials. Consequently, cold electric insulating materials (ceramic, glass, enamel, silicon) can be treated within our induction furnaces.

(PDF) Using a direct-current arc furnace to recover cobalt ...

The technology has been tested using copper, nickel-copper, and lead smelting slags. ... a secondary matte in a slag-cleaning electric arc furnace ... that not only is the extraction of copper ...

Minimization of Copper Losses in Copper Smelting Slag ...

 · During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.55 wt.% and 1.3 wt.%, with most plants reporting copper losses in the discard slag in the range of ...

Chapter 7 Energy Use in the Copper Industry

Figure 7-l. -Open-pit Mine Energy Use 1. 1 r-1,, 1 1 11 ! i 0 10 ''20 3040 50 6070 80 90 100 % energy use Underground mines use electricity for gener-ating compressed air, pumping, lighting, ''venti-lation, and hauling miners and materials. They also use diesel fuel for surface hauling of ore to the mill. Approximately 155 pounds of explosives

Copper Refining: Explained Step-by-Step

 · In refining copper, the metal is melted down in a reverberatory furnace in a more or less oxidizing atmosphere and then further subjected to an oxidizing smelting in order to eliminate the common impurities, most of which have a stronger affinity for oxygen than has copper these operations some of the copper is oxidized to cuprous oxide and dissolved by the metal bath.

Copper Mining and Processing: Processing 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 ...

Copper: smelting, producing and classification-Metalpedia

Copper concentrate is put into an airtight blast furnace, reverberatory, electric furnace, or flash furnace for matte smelting. The output of molten matte is then put into the converter for converting into a blister copper, and next into another kind of reverberatory.

Understanding the bottom buildup in an electric copper ...

copper concentrates using electric furnaces was com-mon. Most are now closed due to the prohibitively high cost of electricity. However, the electric smelting furnace at the Rönnskär plant is still in operation and, since the furnace utilises an external heat source, oxidic and …

Recovery of cobalt, nickel, and copper from slags, using ...

Using converter slag from a nickel-copper plant, tests were carried out, in 1990, on a 100 kVA furnace (operated at 30 kW) and on a 200 kVA furnace (operated at 85 kW), at low additions of reductant (in order to minimize the reduction of iron).

Extractive Metallurgy of Copper | ScienceDirect

Electric furnace settling has the advantage that it can be used for recovering Cu from reverts and miscellaneous materials around the smelter. Slag flotation has the advantages of more efficient Cu recovery and the possibility of using existing crushing/grinding/ flotation equipment. ... is a byproduct of most copper extraction processes. The ...

copper extraction and purification

This page looks at the extraction of copper from its ores, its purification by electrolysis, and some of its uses. Before you get too bogged down in the extraction of copper, make sure that you need it for whatever syllabus you are using. Extracting copper from its ores. The method used to extract copper from its ores depends on the nature of ...

Energy and Environmental Profile of the U.S. Mining …

Modern copper smelters generally have abandoned roasting as a separate step and have combined this function with the smelting furnace. In older systems using multiple brick hearths, however, the copper concentrate moves from the top of the hearth towards the base while air is …

ELECTRIC ARC FURNACE AC (PART 1) Layout & Components

 · The graphite electrodes deliver power to furnace in the form of an electric arc between the electrode and the furnace charge. The arc itself is a …

US3351462A

US3351462A US430247A US43024765A US3351462A US 3351462 A US3351462 A US 3351462A US 430247 A US430247 A US 430247A US 43024765 A US43024765 A US 43024765A US 3351462 A US3351462 A US 3351462A Authority US United States Prior art keywords copper slag sulfide iron oxide Prior art date 1965-01-29 Legal status (The legal status is an assumption and is not a legal conclusion.

THE ROLE OF METALLURGY IN ENHANCING BENEFICIATION …

Furnace matte 50 – 60% Blister copper 96 – 98% ... •The ilmenite is smelted in electric furnaces to pig iron and titanium slag. ... •The uranium is extracted from the solution by using solvent extraction and from this concentrated solution the uranium is precipitated as ammonium diuranate

CHARACTERISATION OF TWO WASTES FROM A COPPER …

The present study was conducted using two forms of waste from an electric furnace in the copper smelting industry in order to study their elemental composition, granulometry, mineralogy, microscopic morphology, etc. as a step towards their valorisation for use in the manufacturing of commercial products.

Copper Recycling

 · Copper-containing scrap can also be added to the smelting stage, depending on type of smelting furnace used and type of scrap. For example, smelters using an electric smelting furnace can process a large amount of secondary oxidic copper-containing material.

Electric furnace

The electric furnace is the third and last tier of furnace. As its name implies, it uses electricity rather than fuel to operate, removing the need for a fuel belt.. The electric furnace smelts items at the same speed as a steel furnace, and also has two slots for modules.However, it is slightly larger than the other two tiers of furnaces; it occupies a 3×3 area instead of a 2×2 area.

RECENT ADVANCES IN THE EXTRACTION OF COPPER, …

is not used for extraction of copper. Moreover, copper is extracted by matte smelting process without using any reductant. The process flow sheet for conventional pyrometallurgical extraction of copper from chalcopyrite concentrate is shown in Fig. 4. Concentrate (15-35% Cu) Fig. 4 : Pyrometallurgical extraction of copper from sulfide ores

Evaluation of Copper Losses Using Flow Patterns in the Cl ...

 · INTRODUCTION The Mitsubishi Continuous Copper Smelting/Converting Process employs an electric furnace (CL- furnace) for settling the slag/matte mixture formed in the smelting furnace. Since the top-blowing in the S- furnace agitates the molten bath strongly, matte droplets are dispersed over the slag phase when melts flow out of the S-furnace.

Melting Copper Cathode in Electric Furnace

 · Using this figure and basing other expenses on electric-furnace steel practice, the cost of melting cathode copper in a furnace of 25 tons capacity per charge should not exceed $4.75 per ton, or 0.238c. per-pound, of copper melted, with power at ½c. per kilowatt-hour.

Recovery of uranium from slag from the electric furnace ...

Figure 1 Electric Furnace Process for Phosphorus and Phosphoric Acid. Reproduced from Kobe, "Inorganic Process Industries." Macmillan. Page 326. 19^8 6 Figure 2 Cross-section View of Electric Phosphate Furnace. Reproduced from Kobe. "Inorganic Process Industries." Macniillan. Page 327* 1948 8 Figure 3 Details of 120 Volt Globar Resistance

EXTRACTION OF COPPER

EXTRACTION OF COPPER FROM SULPHIDE ORE Large amount of copper are obtained from copper pyrite (CuFeS2) by smelting. Ores containing 4% or more copper are treated by smelting process. Very poor ores are treated by hydro-metallurgical process. EXTRACTION OF COPPER BY SMELTING PROCESS Following steps are involved in the extraction of copper.

Melting Copper Cathode in Electric Furnace

 · Using this figure and basing other expenses on electric-furnace steel practice, the cost of melting cathode copper in a furnace of 25 tons capacity per charge should not exceed $4.75 per ton, or 0.238c. per-pound, of copper melted, with power …

ELECTRIC ARC FURNACE AC (PART 1) Layout & Components ...

 · 1. FURNACE STRUCTURE 1.1 LOWER BOTTOM SHELL. A typical EAF has a cylindrical shape. It''s composed by the lowest part, the bottom, that has a spherical shape like a dish ''s connected to a cradle arm which has a curved segment with geared teeth that sits on a rocker rail.This system is needed in order to tilt the furnace for tapping (spout or EBT system) at one side and for removing slag ...

III. EXTRACTION OF BASE METALS (COPPER, NICKELAND …

yielding Fe203. This Fe203 is difficult to remove by slagging. Therefore, blast furnace smelting is not used for extraction of copper. Moreover, copper is extracted by matte smelting process without using any reductant. The process flow sheet for conventional pyrometallurgical extraction of copper from chalcopyrite concentrate is shown in Fig. 4.

Extractive Metallurgy of Copper

1.3. Hydrometallurgical Extraction of Copper 8 1.3.1. Solvent Extraction 8 1.3.2. Electrowinning 9 1.4. Melting and Casting Cathode Copper 10 1.4.1. Types of Copper Product 10 1.5. Recycle of Copper and Copper-Alloy Scrap 11 1.6. Summary 12 Reference 12 Suggested Reading 12 2. Production and Use 13 2.1. Copper Minerals and Cut-off Grades 14 2.2 ...

12.3 Primary Copper Smelting

In fire refining, blister copper is usually mixed with flux and charged into the furnace, which is maintained at 1100°C (2010°F). Air is blown through the molten mixture to oxidize the copper and any remaining impurities. The impurities are removed as slag. The remaining copper oxide is then subjected to a reducing atmosphere to form purer ...

Pyrometallurgy

Pyrometallurgy is a branch of extractive metallurgy consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. Pyrometallurgical treatment may produce products able to be sold such as pure metals, or intermediate compounds or alloys, suitable as feed for ...

Copper Mining and Extraction Sulfide Ores

Place these products in the extraction process in ascending order of copper content. Use the flow chart as a guide: Matte Ore Cathode copper Blister Anode copper Copper concentrate Fire refined copper; Use a periodic table to find the atomic masses of the elements in cuprite and chalcocite. Then work out the percentage of copper in each mineral.

(PDF) Refractories for Copper Production

Abstract. The furnaces used for producing molten copper from concentrates and scrap - flash: smelters, converters, and anode and fire-refining furnaces - present a unique combination of challenges ...

Copper Smelting Slag Cleaning in an Electric Furnace by ...

 · Copper slag cleaning using the flotation method and/or in an electric furnace is widely adopted in industrial production.[2,3,4,5] The flotation method has the advantages of low energy consumption and low copper content in the slag, but the waste …