Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of

Mechanical Operations
Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of

Bronze

Concrete

Flint or porcelain

Stainless steel

Bronze

Concrete

Flint or porcelain

Stainless steel

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Mechanical Operations
__________ mill is not a revolving mill.

Cage

Pebble

Tube

Compartment

Cage

Pebble

Tube

Compartment

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Mechanical Operations
Use of baffles in agitators help in minimising the __________ tendency.

Swirling

Neither A nor B

Both A & B

Vortexing

Swirling

Neither A nor B

Both A & B

Vortexing

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Mechanical Operations
The specific cake resistance for compressible sludges is a function of the pressure drop

Overall

Over cake

Over medium

None of these

Overall

Over cake

Over medium

None of these

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Mechanical Operations
__________ balls capable of grinding the feed in a ball mill gives the maximum efficiency.

Cast iron

Minimum size

Elliptical

Maximum size

Cast iron

Minimum size

Elliptical

Maximum size

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Mechanical Operations
The critical speed of a trommel (N) is related to its dia (D) as

N ∝ 1/√D

N ∝ D

N ∝ 1/D

N ∝ √D

N ∝ 1/√D

N ∝ D

N ∝ 1/D

N ∝ √D

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Mechanical Operations

Mechanical Operations Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of

Mechanical Operations __________ mill is not a revolving mill.

Mechanical Operations Use of baffles in agitators help in minimising the __________ tendency.

Mechanical Operations The specific cake resistance for compressible sludges is a function of the pressure drop

Mechanical Operations __________ balls capable of grinding the feed in a ball mill gives the maximum efficiency.

Mechanical Operations The critical speed of a trommel (N) is related to its dia (D) as

Mechanical Operations
Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of

Mechanical Operations
__________ mill is not a revolving mill.

Mechanical Operations
Use of baffles in agitators help in minimising the __________ tendency.

Mechanical Operations
The specific cake resistance for compressible sludges is a function of the pressure drop

Mechanical Operations
__________ balls capable of grinding the feed in a ball mill gives the maximum efficiency.

Mechanical Operations
The critical speed of a trommel (N) is related to its dia (D) as