The concentration of ore, also known as ore enrichment, is the process of removing gangue particles from ore in order to enhance the percentage of metal in the ore. The difference in physical or chemical properties of the ore and the impurities determines the procedures used to remove impurities from the ores.
What is meant by concentration of ore?
Concentration Definition:
The process of removal of the gangue from Ore is known as Concentration or Dressing or Benefaction. There are numerous methods of concentration and the methods are chosen based on the properties of the ore.
What is concentration of ore Class 10?
Ores are solid material from which a pure metal can be obtained. The process of removal of unwanted material from the ore is known as concentration or dressing or benefaction of ores.
What is metal ore concentration?
Concentration refers to the methods of producing ore fractions richer in iron and lower in silica than the original material. Most processes rely on density differences to separate light minerals from heavier ones, so the ore is crushed and ground to release the ore minerals from the gangue.
Which method is used for concentration of ore?
Another method of concentration of ores is the Froth Flotation Method. This is the process for concentration of primarily sulphide ores. It has the advantage over gravity separation because it can collect even the extremely fine particles of minerals.
What is meant by concentration of an ore why is it necessary?
Ore contains large amount of sand and rocky material. The impurities like sand, rocky materials, limestone, mica etc present in the ore is called gangue or matrix. Concentration is necessary as it is easy to extract a metal when the impurities are removed at the beginning.
What is concentration process?
A concentration process involves the separation of a solute from a solvent. From: Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, 2015.
What is the concentration of ore Name two processes used for concentration of ore?
This process is called concentration of the ore. For this, (i) concentration or centrifugation on the basis of difference in densities (ii) froth floatation and (ii) magnetic separation methods are used. 2. Froth floatation method is used for concentration of the ores of the metals whose ores are in sulphide form.
What is concentration physics?
Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution. Concentration is usually expressed in terms of mass per unit volume. However, the solute concentration may also be expressed in moles or units of volume.
How are oxide ore concentrated?
Oxide ores are concentrated by forth floatation process.
What is an ore Class 5?
Ores is a rock or sediment found in the earth from which metal and minerals are extracted. Explanation: The natural rock contains one or more useful minerals containing metals extracted from Earth by mining is called ores.
What is an ore Class 8?
Answer: A rock from which a particular mineral can be profitably extracted is called an ore. The ores of metallic minerals are generally located in igneous and metamorphic rocks.
What is difference between ore and concentrate?
Related Definitions
ore concentrate is defined as Ore that has been treated so that the solid materials are reduced in size, by crushing, grinding and/or other process with the gangue (waste) being removed, thus concentrating the metal component.
What is concentration of ore Class 12?
Ores are solid material from which a pure metal can be obtained. The process of removal of unwanted material from the ore is known as concentration or dressing or benefaction of ores.
How many different concentrations of ores are there?
The concentration of ore is the first step of metal extraction. There are different types of ore like native, oxidized, sulphurized and halide, which can be concentrated by various physical and chemical methods.
Which process is not concentration of ore?
Correct Answer is: (D) smelting
S melting is not a process of concn of ore.
What is concentration and roasting of ore?
Concentration of ores: The process of separating gangue from the other ores is called concentration of ores. 2. Roasting: The process of heating an ore to a high temperature in excess of air and converting it into its oxide is called roasting. Examples: ZnS (zinc blend), PbS (Galena)
What is roasting and calcination?
Calcination is a process in which ore is heated in the absence of air or air might be supplied in limited quantity. Roasting involves heating of ore lower than its melting point in the presence of air or oxygen. Calcination involves thermal decomposition of carbonate ores.
Which ore is concentrated by leaching?
Explanation: Gold and silver ores are concentrated by leaching. In the leaching method, the ore is treated with a suitable reagent in which ore is soluble but impurities do not.
What is an example of a concentration?
The definition of concentration means the amount of ingredients or parts in relation to the other ingredients or parts. An example of concentration is the amount of salt to water in a saltwater solution.
Is smelting a method of concentration of ores?
In smelting the concentrated oxide ores like haematite, tin stone even after concentration, is heated with flux to remove the acidic or basic impurities froming the slag. All other processes are used fro removing the earth//siliceous impurities.
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