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

Which of the following set of quantum number is not possible, Which of the ...

Which of the following set of quantum number is not possible:              n             l               m1        m2 (a)         3              2              1

What are the characteristics of bases, Q. What are the characteristics of b...

Q. What are the characteristics of bases? Ans. Common bases are borax, baking soda, and antacids. These are some characteristics of bases: They taste bitter

Minimum reflux ratio for the separation, Crude oil is separated into severa...

Crude oil is separated into several fractions, each of these fractions are composed of many undefined hydrocarbon components. For simplicity, the crude oil is assumed to be a mixtu

Many ionic crystals dissolve, Many ionic crystals dissolve in water because...

Many ionic crystals dissolve in water because: (1) Water is an amphiprotic solvent (2)Water is a high boiling liquid (3) The process is accompanied by a positive heat of

Copper, stuck on a chemistry assignment i need a way to include the elctron...

stuck on a chemistry assignment i need a way to include the elctron configuration and chemical properties of copper into a oral that is also a sales pitch.

Consumption of marine oils results in, Q. Consumption of marine oils result...

Q. Consumption of marine oils results in: Consumption of marine oils result in decrease in plasma lipids by reduced synthesis of fatty acids and low density lipoproteins.

Inner Transition Elements, Why are they (Lanthanides and Actinides) called ...

Why are they (Lanthanides and Actinides) called Inner Transition Elements?

ALIPHATIC CHEMISTRY, ACCOUNT FOR THE STABILITY OF CONJUGATED DIENES

ACCOUNT FOR THE STABILITY OF CONJUGATED DIENES

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