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Metallurgy – Purification of metals
(a) Electrolytic refining This is one of the most convenient and important method of refining…
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Metallurgy – Purification of ores
The ore is generally associated with rock impurities like clay, sand etc. called ' gangue or…
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Permeability and Flow Rate
Sizing a hopper outlet or feed tube to achieve the required discharge rate is more…
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Testing of Flow Rate
Flow of metal powders is determined by standard methods developed by ASTM and MPIF. Flow…
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Variables Affecting Flow Rate
Flow characteristics are dependent on several variables, including interparticle friction, particle shape and size, type…
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Attrition Mills
Milling in an attrition mill (Fig. 24) is effected by the stirring action of an agitator that…
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Gas Atomization
There are many methods that have been used to produce aluminum and aluminum alloy powders including…
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Factors Affecting Angle of Repose
Internal factors are those inherent to powders, or characteristic of the nature of powders. These…
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Frictional Properties
Both internal and external friction values are important when characterizing the flow properties of a…
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Apparent Density
Apparent density of a metal powder, or the weight of a unit volume of loose powder…