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

Sources of errore in thermogravimetry, plz can you send me or give me data ...

plz can you send me or give me data about my assignment topic which is mentioned above in title.it consist of 5 pages and only 5 sources are discussed in detail

Amino acids - biomolecules, Amino acids Proteins are a class of biologi...

Amino acids Proteins are a class of biologically significant substance. They are important to virtually all processes in living systems. A few of acids are hormones that offer

Concepts of valence bond theory, Q. Concepts of valence bond theory? Th...

Q. Concepts of valence bond theory? The developments can also be cited as a typical example of the manner in which scientific theories grow and are refined in any particular fi

Determine the specific heat, Q. Determine the specific heat and claculate t...

Q. Determine the specific heat and claculate the total heat transfer? Ans. If a mug full of coffee has about 350 g of liquid inside, how much heat is lost as it cools from 87 o

The number of electrons in the nucleus of c12 is, The number of electrons ...

The number of electrons in the nucleus of C 12   is (1) 6        (2) 12       (3)0      (4)3 Ans: 0

Difference between thermoplastic and thermosetting polymers, Difference bet...

Difference between thermoplastic and thermosetting polymers Thermoplastic polymers Thermosetting polymers (1) Thermoplastic polymers

Reagent required for determination of hardness of water. , Q.   Name of the...

Q.   Name of the reagent required for determination of hardness of water sample of complex metric method. Briefly give the function of each reagent used. Ans. Reagents requir

S block elements, Write the similarities of lithium with other alkali meta...

Write the similarities of lithium with other alkali metals

Hybrisation, examples of spd arrangement

examples of spd arrangement

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