could copper be e tracted by electrolysis of molten ores

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Reduction of Metals (Extraction from Ore)

Copper can be extracted from non-sulphide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulphuric acid to produce a very dilute copper(II) sulphate solution. Concentration of the copper(II) sulphate solution by solvent extraction.

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12.3: Metals and Ores

 · Metal ores are generally oxides, sulfides, silicates (Table 12.3. 1) or "native" metals (such as native copper) that are not commonly concentrated in the Earth''s crust, or "noble" metals (not usually forming compounds) such as gold (Figure 12.3. 1 ). The ores must be processed to extract the metals of interest from the waste rock and from the ...

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Arrange the procedures of obtaining metals from its …

Metal to be extracted Method of metal extraction A. Calcium Heating with carbon B. Aluminium Electrolysis of its molten ore C. Iron Direct heating D. Copper Heating with carbon 21. Metal ores are natural resources that should be preserved. Which of the (1)

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Extracting Metals by Electrolysis

The reactivity of a metal determines how it is extracted. Metals above carbon in the reactivity series must be extracted using electrolysis. Metals less reactive than carbon can be extracted from their ores by reduction. Copper, silver, gold and platinum can occur in their pure form (natively) and do not need to be extracted.

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purification of copper by electrolysis metal extraction …

Copper is extracted from its ores by chemical processes that involve heat or electricity (roasting ores in a smelter–furnace and purification by electrolysis – all the details below). Because of its position in the reactivity series of metals, less reactive copper can be extracted using carbon in a smelting furnace .

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How can metals be extracted?

How can metals be extracted? There are 3 main methods of extracting metals from their ore. They are reduction of the ore with carbon, reduction of the molten ore by electrolysis, and reduction of the ore with a more reactive metal. Click to see full answer.

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Why do we extract copper from low grade ores?

Extracting Metals by Electrolysis - todhigh

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Electrolysis of a molten semiconductor | Nature …

Metals cannot be extracted by electrolysis of transition-metal sulfides because as liquids they are semiconductors, which exhibit high levels of electronic conduction and metal ...

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Why do we extract copper from low grade ores?

 · Bacteria feed on the low grade metal ores and form a solution of copper ions, called a leachate. Slow process - it can take years to extract 50% of the metal from a low grade ore.Energy is needed in the elctrolysis step. Then, the copper will be extracted from the leachate by electrolysis …

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GCSE Chemistry 4

Start studying GCSE Chemistry 4 - Chemical Changes. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 1. Heating the metal oxide with carbon, used when the metal is less reactive than carbon 2. Electrolysis, used when the metal

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Reduction of Metals (Extraction from Ore)

There are 3 main methods of extracting metals from their ore. They are reduction of the ore with carbon, reduction of the molten ore by electrolysis, and reduction of the ore with a more reactive metal. Extraction using carbon Metals such as zinc, iron and copper ...

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Extraction of metals | Metals Quiz

Q. A method of extracting metals from their ores that are more reactive than carbon. answer choices. carbon extraction. fractional distillation. electrolysis. cracking. Tags: Question 14.

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Why is copper extracted out of its ore using electrolysis …

Complex story, let''s try to keep it simple. The ore/concentrate can be a sulfide or an oxide. If sulfide, it also generally contains precious metals. It is therefore melted with fluxes and we get two phases in the furnace: molten sulfide under and...

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Extracting iron and copper

 · Copper is an example of this. Copper mostly occurs as sulfide ores, which are heated in air to convert them to copper(II) oxide. Molten copper can be produced from copper …

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Copper Mining and Extraction Sulfide Ores

Open pit: 90% of ore is mined by this method. Ores near the surface can be quarried after removal of the surface layers. The ore is treated with dilute sulfuric acid. This trickles slowly through the ore dissolving copper to form copper sulfate.

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Extracting Copper From Its Ore Using Electrolysis

Copper, tin, lead, and iron are more reactive and must be heated with carbon to extract the metals. Aluminum, calcium, sodium and other active metals are extracted using electrolysis. Copper can be extracted from its ores by reduction. One of the common

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Copper can be extracted by hydrometallurgy but not zinc. …

Hydro metallurgy method is based on the fact that more electropositive metals displace less electro positive metals from their salt solution. Copper is precipitated from copper sulphate solution by adding iron.CuSO4 + Fe → FeSO4 + Cu↓But Zinc is not precipitated from zinc sulphate solution by adding iron. Hence copper can be extracted by hydro metallurgy but not zinc.

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What is needed to extract any metal from its ore?

Many copper ores contain only 2% of copper compounds. Copper is now extracted from ores containing a low percentage of copper compounds. Suggest one reason why it is difficult to dispose of the waste rock. The reaction in the furnace could cause

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Metal extraction

 · 9 Extraction and purification of copper Copper is less reactive than carbon, so it can be extracted from its ores by heating it with carbon. For example, copper is formed if copper oxide is heated strongly with charcoal - which is mostly carbon: Copper oxide + carbon → copper + carbon dioxide Copper is purified by electrolysis.

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Electrolytic Extraction of Copper, Molybdenum and …

 · Very recently, Sokhanvaran et al. demonstrated the electrochemical production of liquid copper by direct electrolysis of Cu 2 S in a molten sulfide electrolyte composed of 57 wt% BaS and 43 wt% Cu 2 S at 1105 C (1378 K). Their results proved molten sulfides

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Calcium Production by the Electrolysis of Molten CaCl 2 …

 · This paper describes the interaction between calcium and molten CaCl2 and the solubility of calcium in this melt, depending on the calcium content in the copper-calcium alloy that comes in contact with the molten CaCl2. The negative influence of the dissolved calcium on the current efficiency was verified. The negative effects of moisture and CaO impurities on the calcium current efficiency ...

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Copper Smelting Chemistry Tutorial

Copper can be extracted from sulfide ores (usually higher grade ores) by direct smelting. The earliest evidence of copper smelting occurs in Serbian artefacts dating from around 5000 BC. Copper can be extracted from oxide ores using electrolysis ( electrowinning ) for low grade ores, or by the carbon reduction method of smelting for higher grade ores.

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Mount Grace School | Home

Many copper ores contain only 2% of copper compounds. (a) €€€€Copper is now extracted from ores containing a low percentage of copper compounds. Suggest two reasons why. (2) (b) €€€€Chalcocite, an ore of copper, contains copper sulfide. The flow€

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What is Copper Extraction?

What is Copper Extraction? Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore …

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Castner process

Castner process. Not to be confused with Castner–Kellner process. The Castner process is a process for manufacturing sodium metal by electrolysis of molten sodium hydroxide at approximately 330 °C. Below that temperature, the melt would solidify; above that temperature, the molten sodium would start to dissolve in the melt.

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Chapter 17.7: Electrolysis

Electrolysis is the most direct way of recovering a metal from its ores. However, the Na + (aq)/Na(s), Mg 2+ (aq)/Mg(s), and Al 3+ (aq)/Al(s) couples all have standard electrode potentials ( E °) more negative than the reduction potential of water at pH 7.0 (−0.42 V), indicating that these metals can never be obtained by electrolysis of aqueous solutions of their salts.

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Electrolytic production of copper from chalcopyrite

 · Molten sulfide electrolysis is promising not only for the single-step extraction of copper but also to selectively extract other elements contained in the ore concentrate. Sahu et al. [ 50 ] used a BaS-based electrolyte (with La 2 S 3 addition to improve the faradaic efficiency) and showed the selective reduction of copper, molybdenum, and rhenium in a BaS–La 2 S 3 electrolyte, confirming ...

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copper is not usually extracted from its ore by electrolysis

copper is not usually extracted from its ore by electrolysis Home copper is not usually extracted from its ore by electrolysis BWZ Heavy Duty Apron Feeder CS Cone Crusher Flotation Machine Hammer Crusher High-frequency Screen HJ Series Jaw Crusher ...

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Extracting metals using electrolysis

 · Reactive metals are extracted from their ores using electrolysis. Ionic compounds conduct electricity when molten or in solution. is used to extract small quantities of metals from mining waste ...

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could copper be extracted by electrolysis of molten

could copper be extracted by electrolysis of molten ores 5 Electrochemistry Aluminium Redox. Aluminium is extracted by the electrolysis of its molten Copper can be extracted by the electrolysis of an aqueous Nickel ores are ... Inquire Now Patent US4645578

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Aluminium is extracted from alumina (Al2O3) by …

Roasting of sulphides gives the gas X as a by-product. This is a colourless gas with the choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Alumina, Al 2 O 3, is a bad conductor of electricity and has a very high melting point, so before subjecting to electrolysis, it is mixed with fluorspar (CaF 2) and cryolite (Na 3 AlF 6), which lower its ...

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17.7 Electrolysis

Perhaps less familiar is the use of electrolysis in the refinement of metallic ores, the manufacture of commodity chemicals, and the electroplating of metallic coatings on various products (e.g., jewelry, utensils, auto parts). To illustrate the essential concepts of

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