Which factor highly affects the efficiency of tumbling mixers?
Anonymous Quiz
54%
a) The geometric shape of the container
9%
b) The type of material being mixed
34%
c) The speed of rotation
3%
d) The size of the mixer
What advantage do agitator mixers have over tumblers for mixing solids?
Anonymous Quiz
8%
a) They depend entirely on gravity
74%
b) They are useful in mixing wetted, sticky, or plastic solids
18%
c) They are less efficient in breaking up lumps or aggregates
0%
d) They have lower shear forces
In a ribbon mixer, what is the purpose of having helical blades wound in opposite directions?
Anonymous Quiz
1%
a) To increase the speed of rotation
94%
b) To provide movement of material in both directions along the axis of the tank
2%
c) To generate more heat during mixing
2%
d) To create a stronger mixing action
What is a characteristic of solids mixing equipment regarding mixture composition
variations?
variations?
Anonymous Quiz
16%
a) Mixtures produced by small mixers have greater variations in composition
55%
b) Mixtures produced by large mixers have greater variations in composition
13%
c) The composition variations are independent of the size of the mixer
17%
d) The composition variations are solely dependent on the type of material being mixed
What is the main purpose of continuous mixing processes?
Anonymous Quiz
76%
a) To reduce both the scale and intensity of segregation
6%
b) To increase the speed of mixing
14%
c) To allow for higher shear forces
4%
d) To reduce the overall efficiency of the mixer
👍1
How does a barrel-type continuous mixer provide intense mixing of ingredients?
Anonymous Quiz
3%
a) By increasing the speed of rotation
90%
b) By using a set of baffles that causes a part of the material to move backward
3%
c) By generating more heat during mixing
5%
d) By using a stationary container
❤1
In a zig-zag continuous blender, what happens when the blender is inverted?
Anonymous Quiz
91%
a) The material splits into two portions, with one moving backward and the other moving forward
6%
b) The material remains stationary
4%
c) The material is mixed under tumbling motion
0%
d) The material is discharged from the blender
Which type of mixer is suitable for mixing solids in a sticky or plastic state?
Anonymous Quiz
18%
a) Tumblers/Blenders
54%
b) Agitator Mixers
21%
c) Ribbon Mixer/Blender
7%
d) Continuous Mixers
Which continuous mixer consists of several "V"-shaped blenders connected in series?
Anonymous Quiz
1%
a) Barrel Type Continuous Mixer
79%
b) Zig-zag Continuous Blender
4%
c) Ribbon Mixer/Blender
16%
d) Twin-shell Blender
What should an ideal mixer possess?
Anonymous Quiz
7%
a) High power consumption
8%
b) Difficulty in cleaning
82%
c) Gentle mixing action and low maintenance
3%
d) Product damage
What is a problem with rotating shell mixers?
Anonymous Quiz
16%
a) High power consumption
81%
b) Poor cross-flow along the axis
1%
c) Efficient mixing
2%
d) Good cross-flow
How can the mixing action in rotating shell mixers be improved?
Anonymous Quiz
6%
a) Reducing the drum size
90%
b) Adding baffles or inclining the drum on the axis
4%
c) Removing baffles
0%
d) Decreasing the speed of rotation
In cubical and polyhedron-shaped blenders, the powder is subjected more to a ________
motion
motion
Anonymous Quiz
34%
a) Rolling
58%
b) Sliding
3%
c) Jumping
5%
d) Twisting
Twin-shell and double-cone blenders are recommended for:
Anonymous Quiz
58%
a) Precision blending
31%
b) High power consumption
7%
c) Inefficient mixing
5%
d) Difficult cleaning
Ribbon mixers suffer from:
Anonymous Quiz
0%
a) Low power requirement
91%
b) Difficulty in cleaning and higher power requirement
2%
c) Efficient blending
7%
d) Easy cleaning and low power requirement
Powders that exhibit high forces of cohesion or adhesion are:
Anonymous Quiz
12%
a) Easy to mix
76%
b) Difficult to mix
10%
c) Not affected by mixing
2%
d) None of the above
🍓1
What type of mixers are recommended for powders that exhibit high forces of cohesion or
adhesion?
adhesion?
Anonymous Quiz
84%
a) Agitators, preferably planetary and sigma blade
5%
b) Ribbon mixers
5%
c) Twin-shell blenders
5%
d) Double-cone blenders
For strongly cohesive materials, it is necessary to:
Anonymous Quiz
10%
a) Reduce the speed of rotation
83%
b) Fragment agglomerates through high shear devices
4%
c) Increase the size of the blender
3%
d) Use low shear devices