"why is copper subjected to froth floatation during its extraction"

Extraction of Copper

2021-8-26 · The extraction process involves the following steps: (i) Condensation of ore: Only 2≈3% Copper (Cu) is present in copper pyrites (CuFeS 2 ). After concentrating it by oil-froth floatation process, the amount of Cu will be 20≈30%. copper pyrites) and similar sulphide ores are the commonest ores of copper.

AP SSC 10th Class Chemistry Important Questions Chapter …

2021-2-26 · In the extraction of copper from its sulphide ore, the ore is subjected to partial roasting in air to give its oxide. 2 Cu 2 S + 3O 2 → 2 Cu 2 O + 2SO 2. When the supply of air is stopped and temperature is raised, it results in the reaction of rest of the sulphide ore with oxide to form metal and S02. '' 2 Cu 2 O + Cu 2 S → 6 Cu + SO 2

METALS: EXTRACTION PROPERTIES AND USES

2020-11-26 · Extraction - from Copper Pyrites. Crushing the ore . The ore is crushed to increase the surface area for the succeeding chemical reactions. The ore is then concentrated. Concentration of the ore. The ore is concentrated by froth floatation . The fine ore powder is mixed with water and oil, after which air is blown into the mixture, usually from ...

Froth Flotation Process

Copper Mining: The commonest ore used in the extraction of copper is Chalcopyrite (CuFeS 2) also known as Copper Pyrites and other such sulphides. The percentage of copper in the actual ore is too low for direct extraction of copper to be viable. The concentration of ore is required and it is done by the Froth …

Copper Flotation

2016-5-16 · Copper Flotation Process Summary. Flotation of Copper Ores. Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of the mills has continually been …

During the extraction of copper metal the ore is subjected ...

2017-11-4 · During the extraction of copper metal the ore is subjected to froth floatation. Give a reason why this process is necessary . During the extraction of copper metal the ore is subjected to froth floatation.

Extraction Of Copper | Mining, Concentration, Smelting ...

Copper Mining: The commonest ore used in the extraction of copper is Chalcopyrite (CuFeS 2) also known as Copper Pyrites and other such sulphides. The percentage of copper in the actual ore is too low for direct extraction of copper to be viable. The concentration of ore is required and it is done by the Froth …

copper extraction and purification

2015-7-26 · 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 ...

NCERT Solutions for Class 12 Chemistry Chapter 6

2021-4-1 · Q3. Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction? Solution: Hydrogen sulphide and carbon disulphide (CS 2) has a larger ∆ f G (Gibbs free energy of formation) than copper (I) sulphide. Thus, C and H 2 S will not be able to reduce Cu 2 S to Cu. Whereas, ∆ f G of Cu

Flotation of Nickel-Copper Sulphide Ore: Optimisation of ...

2020-1-8 · The nickel-copper sulphide ore used in this study was supplied by Trojan Nickel Mine located in Bindura, Zimbabwe. From the X-ray diffraction analysis, the main phases present in the ore were pentlandite (49.4%), pyrrhotite (41.2%) and quartz (4.6%), Fig.1. The ore which was supplied in lumpy form was subjected to crushing and grinding.

Chemistry MCQs for Class 12 with Answers Chapter 6 …

2020-7-17 · The first step in extraction of copper from CuFeS 2 is (a) reduction by carbon ... The chemical composition of ''slag'' formed during the melting process in the extraction of copper is (a) Cu 2 O + FeS (b) FeSiO 3 (c ... Name the depressant which is used to separate ZnS and PbS ores in froth floatation process. [Foreign 2014] Answer ...

7 Factors Affecting Froth Flotation Process

2018-12-20 · Froth Flotation machine plays an indispensable role in the mineral beneficiation process, flotation is susceptible to a number of factors during the process, including grinding fineness, slurry concentration, pulp pH, pharmaceutical system, …

GSEB Solutions Class 12 Chemistry Chapter 6 General ...

2020-12-28 · Why is the extraction of copper from pyrites more difficult than that from its oxide ore through, reduction? Answer: The Gibbs energies of formation of most sulphides are greater than that for CS 2. In fact, CS 2 is an endothermic compound. Hence it is common practice to roast sulphide ores to corresponding oxides prior to reduction. Question 4 ...

1 Froth Flotation – Fundamental Principles

2009-8-27 · 1.4 Collection in the Froth Layer Once a particle and bubble have come in contact, the bubble must be large enough for its buoyancy to lift the particle to the surface. This is obviously easier if the particles are low-density (as is the case for coal) than if they are high-density (such as lead sulfide). The particle Froth

Froth Flotation Process

The process of froth floatation starts with the Comminution process in which the surface area of the ore is increased. First of all, the ores are crushed into very fine powder sized particles and mixed with water. The mixture obtained is called Slurry. A Collector which …

(a) Name two ores from which copper is extracted. (b ...

(a) Name two ores from which copper is extracted. (b) During extraction of copper metal, the ore is subjected to froth flotation. Give a reason why this process is necessary. (c) Name one alloy of copper and state its use. (1m 36s)

Extraction of Copper from Copper pyrite | Grade 12 …

Extraction of Copper from Copper pyrite. The principal ore of copper is copper pyrite and copper is extracted from this ore. The different steps in extraction of copper are: The ore obtained from mines are broken down into small piece by jaw crusher and then pulverized. The ore being sulphide ore is concentrated by froth floatation …

How Extraction of Copper from Copper Pyrites?

2021-9-23 · Extraction of copper from copper pyrites involves the following steps – Crushing and concentration. The ore is crushed and then concentrated by froth floatation process. The ore obtained from mines are broken down into little piece by jaw crusher and then pulverized. The ore being sulphide ore is concentrated by froth floatation procedure.

Flotation Froth

Froth flotation is a process that selectively separates materials based upon whether they are water repelling (hydrophobic) or have an affinity for water (hydrophilic). Importantly, the word flotation is also used in the literature to describe the process in density separation in which lighter microplastics float to the surface of a salt solution.

Why is the extraction of copper from pyrites more ...

The Gibbs free energy of formation (Δ f G) of Cu 2 S is less than that of H 2 S and CS 2.Therefore, H 2 and C cannot reduce Cu 2 S to Cu.. On the other hand, the Gibbs free energy of formation of Cu 2 O is greater than that of CO. Hence, C can reduce Cu 2 O to Cu.. C (s) +Cu 2 O (s) → 2Cu (s) + CO (g). Hence, the extraction of copper from its pyrite ore is difficult than from its oxide ore ...

Froth Flotation

Froth Flotation. Froth flotation is a surface chemistry based separation process which is extensively used in the processing of mineral ore deposits as a method of separating the desired mineral component from their associated gangue material [17,34]. From: Advances in Colloid and Interface Science, 2005.

The chart shows the extraction of lead from its ore.

During extraction of zinc metal, the ore is subjected to froth floatation. Give a reason why this process is necessary. (Solved) During extraction of zinc metal, the ore is subjected to froth floatation. Give a reason why this process is necessary. Date posted: September 3, 2019. Answers (1)

Topper 2.1.29.510.2 8553 Extract Metallurgy

Q.21 What is the role of depressant in froth floatation process? Q.22 Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction? Q.23 Explain: (i) Zone refining (ii) Column chromatography . Q.24 Write down the reactions taking place in different zones in the blast furnace during the