DEPARTMENT OF CHEMICAL ENGINEERING
UNIVERSITY OF ENGINEERING AND
TECHNOLOGY PESHAWAR PAKISTAN
PARTICLE TECHNOLOGY
LABORATORY
LAB ENGINEER:
Engr Unsia Habib
LAB TECHNOLOGIST:
Mr Adnan
LAB ASSISTANT:
Mr Safeer
Particle Technology Laboratory PARTICLE TECHNOLOGY LABORATORY (CHE 231L)
The primary goal of the Particle technology Laboratory is to acquaint our students with
some of the equipment used in chemical industries and to give them the opportunity to
operate it safely. Laboratory covers hands-on-experiments demonstrating the
application of chemical engineering particleTechnology units. The Particle Technology
Laboratory is equipped for the study of the various mechanical operations associated
with different solids. Experiments mainly deal with size reduction, size separation,
clarification, kneading, solid separation etc. All basic experiments for solid particle
mechanics like Jaw Crusher, Ball Mill, Hammer Mill, Plate and Frame Filter, Cyclone
Separator, Sedimentation, Sieve Shaker are available in this laboratory.
Equipments in Particle Technology Laboratory
S. No
Name of Equipment
Make / Model Number
Quantity
1
Analytical sieve shaker
Retsch Germany AS200
1
2
Hammer Mill
ArmfieldFT2
1
3
Centrifugal Ball Mill
Retsch Germany S100
1
4
Sedimentation Apparatus
Armfield W2
1
5
Plate and Frame Filter press
Armfield F14
1
6
Mixer Mill
Retsch Germany MM 400
1
7
Jaw Crusher
Retsch Germany BB 100
1
8
Mortar Grinder
Retsch Germany RM 200
1
2 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory EQUIPMENTS DESCRIPTIONS
1. Analytical Sieve Shaker
The analytical sieve shaker is used in research & development, quality control of raw
materials, intermediate and end products as well as in production monitoring. The unit is
also applicable for the separation, fractionation (wet and dry), and the grain size
determination for various industrial and research applications. Measuring range of the
unit is 20 um to 25 um with no of fractions of 9 to 17.
Figure 1: Analytical sieve shaker
3 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory 2. Hammer mill
The unit is designedto generate a general laboratory grinding. The four armed cross
revolves at a high speed in the unit, shattering or tearing anything fed in. The bench top
unit is supplied with eight perforated plate screens.
Figure 2: Hammer mill
4 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory 3. Centrifugal Ball Mill
The unit is suitable for ultra fine grinding ( wet and dry) of medium hard , fibrous
materials hard and tough materials , using the unit we can calculate the constants for
Bond’s law , Kick’s law and Rettinger’s law. An extremely high centrifugal force brought
about by special design of the drive mechanism achieves a high degree of fineness and
excellent mixing and homogenization of the specimen in an extremely short time.
Figure 3: Centrifugal Ball Mill
5 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory 4. Sedimentation Apparatus
The unit is used to study the basic physical processes involved in sedimentation
including zone formation and hindered settling.
The unit consists of five equally sized
glass cylinders mounted on a vertical back-panel with illumination from behind.
Measuring scale is provided for each cylinder to measure the suspension height. Each
cylinder may be removed from the board for filling and mixing of the solid particles as
well as for cleaning.Using this unit student will be able to determine not only the effects
of initial concentration and initial suspension height on sedimentation rates but also the
effect of particle size distribution and the using of flocculating agents. Student shall also
be able to construct the settling rates curves from a single batch experiment.
Figure 4: Sedimentation Apparatus
6 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory 5. Plate and Frame Filter press
The laboratory size unit is robust and versatile and has been designed to allow clear
demonstration of the mode of operation as well as a high degree of experimentation for
scale-up to industrial processes the unit consists of filter and plate assembly to filter the
feed by pressing and filtering phenomena. The unit can be used to perform experiments
like determination of the surface cake resistance and filter medium.
Figure 5: Plate and Frame Filter press
7 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory 6. Mixer Mill
The mixer mill is a compact versatile bench-top unit, which has been developed
specially for dry, wetsoft, fibrous, hard and brittle and cryogenic grinding of small
amounts of sample. It can mix and homogenize powders and suspensions in only a few
seconds.Theunit is designed to process small samples and is used for fast ultra fine
grinding of two samples simultaneously
Figure 6: Mixer Mill
8 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory 7. Jaw Crusher
The unit is engineered for test but gentle preliminary size reduction of medium hard,
hard, brittle and tough materials. The unit is particularly suitable for processing stone,
minerals, ores, glass, ceramics, construction materials, brittle metal, alloys, slag
synthetic resins etc .Feed size < 35 mm, Final Size <0.5 mm
Figure 7 :Jaw Crusher
9 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory 8. Mortar Grinder
It is suited for Ultra-fine grinding of inorganic and organic substances for analysis. The
unit can grind, mix and triturate soft hard, brittle and pasty materials. The products of
mortar mill can provide fast and safe handling of ash clays, chemicals, drugs, spices,
food stuffs, pharmaceutical and homeopathic raw and finished materials, salts, oil seds,
slags, soil silicates and cement clinker and many more substances. The unit grinds in
the range in the range of Feed size <0.8 mm, Final size < 10 um
Figure 8: Mortar Grinder 10 Department of Chemical Engineering U.E.T Peshawar Particle Technology Laboratory List of Experiments
S.No
Name of Experiment
1.
Measurement of drag coefficient for different spheres with several diameters.
2.
To determine the terminal velocity of different diameters spherical particles
falling/setting in the liquid.
3.
To determine the number of particles in a given sample of sand
4.
To study the hammer mill
5.
To determine the volume mean , surface mean and linear mean diameter of
the product obtained from the hammer mill.
6.
To study the Ball mill
7.
To determine the bond’s law , kick’s law and rettinger’s law constants for a
ball mill.
8.
To determine the bond’s law , kick’s law and rettinger’s law constants in case
of hammer mill.
9.
To study the effect of initial concentration on sedimentation characteristics
10.
To contruct the rate of settling curve against concentration for a single batch
test
11.
To study the effect of initial height on sedimentation characteristics
12.
To study the plate and frame filter press
13.
To determine the specific cake resistance and filter medium resistance in plate
and frame filter press
14.
To determine the bond’s law , kick’s law and rettinger’s law constants for a
jaw crusher
11 Department of Chemical Engineering U.E.T Peshawar