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

Explain generation of the electrophile, Generation of the electrophile : Th...

Generation of the electrophile : The electrophile is the carbocation produced by protonation of the alcohol  oxygen and loss of water.

Extraction of metals, metals iron, aluminium, copper, gold, etc. have great...

metals iron, aluminium, copper, gold, etc. have great industrial significants. which are their important ores? important alloys of iron, aluminium and copper and their uses.

How to calculate rate constant of first order reaction, find the rate const...

find the rate constant of first order reaction if 75% of reaction is completed in 6.03 sec

Cycloalkanes, Why cyclo propane is more stable than cyclohexane

Why cyclo propane is more stable than cyclohexane

Explain with diagrams the lever rule and tie-line rule, Explain with approp...

Explain with appropriate diagrams the lever rule and Tie-line rule. Compositions of two coexisting phases of a binary system are given by tie-line rule. For overall composition

Test for the presence of linseed oil, Q. Test for the presence of linseed o...

Q. Test for the presence of linseed oil? Hexabromide test is done to know the extent of presence of linolenic acid. In presence of fish oils, which are rich in linolenic acid,

Calculate the difference between the fugacity, Calculate the difference bet...

Calculate the difference between the fugacity? The pressure in a liquid droplet of radius r is greater than the pressure of the surrounding equilibrated gas phase by a quantity

PEPTIDE BONDS AND HYDROLYSIS, I UNDERSTAND THE CONCEPT. I AM CONFUSED ABOUT...

I UNDERSTAND THE CONCEPT. I AM CONFUSED ABOUT A SPECIFIC EQUATION OR FORMULA TO SHOW HOW THE BONDS ARE BROKEN THROUGH HYDROLYSIS.

DTA, interpretation ande of errors in differential thermal analysis

interpretation ande of errors in differential thermal analysis

The bond length of hcl, The interatomic distances in H 2 and Cl 2 molecul...

The interatomic distances in H 2 and Cl 2 molecules are 74 and 198 pm respectively. The bond length of HCl  is : (1) 272 pm                                          (2) 1

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