Explain about gravity separation, Chemistry

Assignment Help:

Q. Explain about Gravity Separation?

This is one of the simplest processes of concentration of ores. It is based on the difference in the specific gravities of the gangue and ore. In this process, the crushed ore is kept on top of a sloping table, which is prepared to vibrate. A stream of water is goes in the direction perpendicular to the slope. The lighter particles are thrown up by vibration and are replaced by the water stream. The heavier mineral particles settle to the base and are collected. This process of gravity separation is called as tabling. Casseterite or tin-stone, pitchblende and chromite are concentrated by this method.

A modification of the above process is sinking and float method. In this the powdered ore is suspended in a liquid whose specific gravity is intermediate between the ore and the densities of gangue. The lighter material floats and the heavier material sinks. In this process, the difficulty is in finding a liquid of the proper specific gravity. A solution of calcium chloride in after is usually used. Suspensions of sand in water giving liquids of specific gravities up to 3.2 are also used. Thus, due to technical problems this process is rarely used in concentration of low grade ores, but it is widely used in cleaning coal.


Related Discussions:- Explain about gravity separation

Organic, Write essey on organic quantitative analysis

Write essey on organic quantitative analysis

What is hydrate isomerism, Q. What is Hydrate Isomerism? In a compound,...

Q. What is Hydrate Isomerism? In a compound, water molecules may be present in either coordinated form or as water of crystallisation In the former case water  molecules are di

Electrolytic conduction, what type of products are gained after electrolyti...

what type of products are gained after electrolytic conduction and in which matter?

What do you mean by milk foams, Q. What do you mean by Milk Foams? The ...

Q. What do you mean by Milk Foams? The proteins and water in milk are extended into thin films by agitation. These thin films enclose small air bubbles to make foam in which t

Finding volume with molarity, If you have 250 mL of 2 M sodium sulfate dilu...

If you have 250 mL of 2 M sodium sulfate diluted to make 0.500 M of sodium sulfate, how would you figure out the volume?

Tea leaves, study the acidity of different sample tea leaves

study the acidity of different sample tea leaves

Determine the percent of hydrozen in a tris buffer, A Tris buffer at pH 6.0...

A Tris buffer at pH 6.0 (here "Tris" is a nickname use for Tris hydroxymethyl amino methane). For the given pK A table is Tris a compound you would select for a buffer at pH 6.0?

Half-reaction at the anode, During the electrolysis of water, what are the ...

During the electrolysis of water, what are the two half-reactions taking place? HALF-REACTION AT THE ANODE: HALF-REACTION AT THE CATHODE: What is the relative ratio betwee

Illustrate ib brief about the single crystal growth, Illustrate ib brief ab...

Illustrate ib brief about the Single crystal growth Single crystals are grown either by Czochralski (CZ) method or by Float Zone (FZ) method. It comprises a furnace with a gra

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd