Size Reduction Flashcards
Dicing especially means size reduction of
Tuber crops
Mincing especially means size red of
beef
Grinding esp relates to
spices
Shredding esp means size red of
Vegetables
Smooth pastes can be made through
Miling
Purposes of size reduction are
etraction & epression
shorten heat treatments
for further processing
standard req
desired constituent obtainment
different forces used for size reduction
Compression
Shear
Impact
Force used to ………. Hard materials
Compression
Grind
Force used to CRUSH and used widely for fibrous food and …. & …
Impact
Broccoli
Carrot
Compression force gives Fine grind?
False
Coarse grind
Endosperm seperated from bran of wheat using
Compression force
Crack opening of grains associated with
Compression force
Compression helps in crushing and powdersing
Impact helps in grinding?
false
Compression force: Grinding
Impact: Crushing
Soft materials and Fibrous food can be reduced using
Shear force
The material to be reduced is squeezed between two surface in
Shear force
Forces associated with mills
Roller Mill
Ball mill
Pin mill
Hammer mill
Attrition mill
Compression if rolls, Shear also if rolls at diff speed
Impact & Shaer { collides, rubbs off}
Impact
Shear & Impact
….
roller mill; gives coarse product>?
No
Fine product ..Shear and compression
In roller mill the two horizontally aised rolls rolls rotates away from each other?
False
rotates towards
Small pieces or shreadded products obtained from
Hammar mill
Mill which has industrial importance as in … is ..
Ethanol plamt, Livestock feed
Hammar mill
Hammar mill forces acting are
Impact, Shear
Etremely fine product is obtained from
Ball mill
Ball in Ball mill is made of
Stainless steel or Rubber
BAll mill forces acting are
Impact Shear
Kitchen blender like mill
Pin mill
Repeated impact causes milling in
Pin mill
Vertical impactor shaft present in ….
Pin mill
Mid range [roducts are obtained from Hammar mill?
No
Attrition mill
Input and output of attrition mills are
3-10 mm to 1-10 microns
How many Discs are therer in Pin mill
2
Mill that crush and shred products
Hammar mill
mill that crush and grind products is
Ball millB
Ball mill … and …. the product
Crush and Grind
Repeated blow in hammer mill creates ….force
Shear force
Repeated action in pin mill creates … force
impact force
