Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them.
For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.mm). Aperture width of IS screen of mesh numberwill be approximately __________ microns.
__________ mills are termed as disintegrators.
Size reduction of ice and gypsum can be accomplished suitably by a __________ crusher.
Carbon black is pulverised in a
Screen capacity is expressed in terms of
Solid particles of different densities are separated by
With increase in the capacity of screens, the screen effectiveness
Which of the following achieves the least reduction ratio for a given feed size?
Which of the following is not a non-metalliferous mineral?
Filter medium resistance is important during the __________ of filtration.
In classification, particles are said to be equal settling, if they have the same terminal velocities in the
Mixer used for rubber compounding is
Filtration rate does not depend upon the
Which of the following is a batch sedimentation equipment ?
Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called
Reduction ratio of crushers is the
Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of 'scrappers' ?
mesh seive size corresponds to __________ microns.
Supporting legs of a plate and frame filter is normally made of
A filter press is
Xanthates are used in the froth floatation process as a/an
The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the
The filtrate flow rate in constant pressure filtration
A screen is said to be blinded, when the
What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged withmm dia balls ?
During agitation of liquids, power consumption during laminar flow is not proportional to the
As particle size is reduced
During the washing of cake
In constant pressure filtration,
Which of the following oxides is not present in hematite iron ore?
To get a fine talc powder from its granules, the equipment used is
A fluid energy mill is used for
Float and sink test determines the possibility of cleaning of coal by a process based on the
Dispersion of a gas through liquid is done by using a
Work index is defined as the
For spheres, the specific surface shape factor is given by
__________ mill is not used for grinding wheat into flour and for milling of cereals & other vegetable products.
Kick's law relates to
To get ultrafine particles, the equipment used is a
For a turbine agitated and baffled tank, operating at low Reynold's number (based on impeller diameter), the power number (Np) varies with NRe as
Which of the following is a fine crusher?
__________ is a cohesive solid.
A cottrel precipitator makes use of the __________ for dusty air cleaning.
The most suitable equipment for the transportation ofmesh size particles is a
Which of the following is not used as filter aid?
Reciprocal of sphericity is termed as the
Which is a secondary crusher for a hard & tough stone ?
Sphericity of pulverised coal is
What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls ?
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