This presentation explains about the storage of jaggery

1. Sugar bagging and Storage

2. Introduction
• Bins and Hopper
▫ Short duration
▫ Few hundred tons
• Short term bulk storage silo
▫ Tall cylindrical construction
▫ Capacity 1000 – 3000 tonnes
• Long term bulk storage silo
▫ Lower aspect ratio
▫ Capacity 20000- 80000 tonnes
• Bagged sugar warehouses

3. TYPES OF BULK SILO
• Generally vertical cylindrical silo store up to
80000 tonnes
• Vertical cylindrical silo - cost effective, less
space occupy
• Designs are differ in terms of construction
material, approach to insulation, sugar feed and
extraction mechanism

4. VERTICAL SILO

5. MATERIALS OF CONSTRUCTION
• Constructed usually using
▫ stainless steel,
▫ reinforced concrete,
▫ Epoxy lined mild steel and concrete
• Must be insulated – to avoid moisture migration
(avoid cake formation)
• Some time Silo have air pipe to flush out the moisture

6. Feed and discharge system
• Simplest approach- feeding a sugar at a apex of silo
which is fitted with a conical roof
• Disadvantage – dust formation and crystal damage
• Alternate way
▫ Slotted intermediate ceiling
⚫ Concrete circular slots
⚫ Uniform distribution but chance for crystal breakage
▫ Rotating screws
⚫ Discharge outward from center of the silo, shorter fall
distance
⚫ Costly

7. VENTILATION
• Air passage to the sugar is strongly
recommended
• Minimize the caking by carrying away excess
moisture
• Air humidity must below the Equilibrium
Relative Humidity of sugar
• Air dehumidify by chemical desiccant

8. VERTICAL SILO
1--> apex
2 --> bucket elevator
3 --> air inlet
4 --> Discharge opening

9. • Economic storage
• If space is not an issue
• Do not have side walls above 3 m
• Sugar is conveyed by a conveyor at the apex of
the roof
• Discharge by throw-off carriage, moving
conveyor at a bottom
• Draw back: sugar exposed to more air
FRAME SILO

10. FRAME SILO

11. SUGAR AND PACKAGING
• Sugar packaged into sacks, bags
• Size range few grams to 1000 kg
• Retail pack 1 kg and 2 kg
• Equipment components
▫ Weigher and Feeder
▫ Packaging material
▫ Forming , filling and sealing

12. WEIGHER AND FEEDERS
• Oldest and simplest method
▫ Bags stand on the scale and its filled by manually
▫ Sticky brown sugar- best
❑Automatic filling method
❑Vertical feeder used for less stick and free flowing sugars
❑Vertical tube containing rotating screw/ augur which
delivers a known volume of sugar
❑Volume can be adjusted by no.of revolutions

13. PACKAGING MATERIALS
• Sugar is packed in
▫ Jute
▫ Jute sacks with poly ethylene liners
▫ Single and multi ply paper - good strength
▫ Poly ethylene – cheaper, product visibility,
moisture impermeability
▫ Poly propylene
▫ Woven poly ethylene and propylene
▫ Kraft paper

14. PACKAGING MATERIAL CONSIDERATION
• Ability to prevent moisture migration
• Material have low moisture vapour transmission
characteristics
• Must be food grade
• Inks and glues used in packaging material must
be food grade
• Packaging material from store must be clean (ie.
No dust)

15. Multiply paper packs Jute Sacks

16. Kraft paper

17. FORMING, FILLING AND SEALING
• Two machine types
1. machines that use pre made bags – which are
opened and presented to the weighter discharge,
filled , folded and sealed
2. Machine uses paper from reel form a bag , then it
is filled , fold and sealed