Nov 17, 2021 2. Concentration of Ore. The purification or concentration of ore is done by various methods such as: Hydraulic washing; Froth floatation; Magnetic Separation; Leeching (i) Hydraulic Washing. It is based on the principles of gravity separation where density differences between the ore and the impurities separate the ore from the impurities

Get Price

First, the ore needs to be concentrated with some processes like hydraulic washing, magnetic separation, etc. then finally the isolation of pure metal is done. Concentration of Ores This is the process of isolation of ore from the gangue. This involves various processes that depend on the properties of the metal ore and the gangue

Get Price

May 02, 2013 Why ore of copper is not concentrated by hydraulic washing? Copper ore, usually in the form of malachite, needs to be refined through a chemical reaction, rather than a

Get Price

Aug 15, 2011 Why ore of copper is not concentrated by hydraulic washing? Copper ore, usually in the form of malachite, needs to be refined through a chemical reaction, rather than a

Get Price

To remove these unwanted substances the ores are concentrated on the basic of the type of impurities and their percentage proportion. There are different procedures for the concentration of ores such as hydraulic washing, magnetic separation, froth floatation process, leaching etc. - Froth flotation method is used for enrichment of ore

Get Price

By flowing the powdered ore in a current of water, the lighter rocky impurities can be washed away and the ore particles are left behind. For this, either wilfley table or Hydraulic classifier is used. Generally oxide and carbonate ores are concentrated by this method. i.e. haematite and cerussite. There are two gravity concentration methods

Get Price

Dec 06, 2019 (a) Zns ore can be concentrated by froth floatation method because it is a sulphide ore. (b) During roasting, copper pyrites are converted into a mixture of FeO and Cu 2 O. 2CuFeS 2 + O 2 \(\stackrel{\Delta}{\longrightarrow}\) Cu 2 S + 2FeS + SO 2

Get Price

Cassiterite, chromite and pitchblende are concentrated by hydraulic washing (Tabling). B Pure A l 2 O 3 is obtained from the bauxite ore by leaching in the Baeyers process

Get Price

gold processing - gold processing - Mining and concentrating: The nature of the ore deposit determines the mining and mineral processing techniques applied. Oxide ore deposits are frequently of such low grade (e.g., 3 to 10 parts per million) that extensive mineral processing cannot economically be justified. In this case they are merely shattered by explosives and then piled into heaps for

Get Price

Aug 19, 2020 (b) A and R are correct, R does not explains A (c) A is correct but R is wrong (d) A is wrong but R is correct. Assertion(A) – Haematite and tin stone are concentrated by hydraulic washing process. Reason (R) – Oxide ores are heavy and have high specific gravity

Get Price

Jun 27, 2020 • Copper Copper pyrites ... Removal of unwanted materials from the ore is known as concentration. HYDRAULIC WASHING MAGNETIC SEPARATION FROTH FLOATATION LEACHING On the basis of the type of ores, some of the important processes are given below: Hydraulic washing is based on the differences in gravities of the ores and the gangue

Get Price

The concentration of ore can is the chemical process of eliminating impurities like sand, rocks, silt, grit etc. from the ore for the extraction of metal. In this content definition and methods for concentrating ore are explained along with the definition of ore and its types

Get Price

environmental factors. Some of the common methods of ore concentration are discussed below. 1.2.1 Gravity separation or Hydraulic wash In this method, the ore having high specific gravity is separated from the gangue that has low specific gravity by simply washing with running water. Ore is crushed to a finely powdered form and treated with

Get Price

Mar 11, 2011 Ore of copper is not concentrated by hydraulic washing ( Give reason ) - Science

Get Price

Why ore of copper is not concentrated by hydraulic washingCopper ore, usually in the form of malachite, needs to be refined through a chemical reaction, rather than a mechanical separation as with washing

Get Price

If the sulphide ore of copper contains iron, the silica (SiO 2) ... Assertion(A) – Haematite and tin stone are concentrated by hydraulic washing process. Reason (R) – Oxide ores are heavy and have high specific gravity. Answer: ... Bauxite is an ore of aluminium while china clay is not. Why?

Get Price