|
Refined Free Flow Salt
| Product Specifications: |
|
| NaCl |
Above 99.0% |
| Soluble matter |
Max. 0.4% |
| Insoluble matter other than NaCl |
Max. 0.1% |
| Iodine |
Max. 40-60 ppm |
| Moisture level |
Max. 0.3% (At the bottom of the dryer 0.1% - 0.15%) |
| Particle size distribution |
All less than 710 microns or as required
by buyer |
PROCESS DESCRIPTION
The Raw Salt will be loaded to the hopper through which it
will enter the Special Washing System. The flow rate will
be measured here and controlled to set it as per the pre-decided
rate based on the purity of raw salt. In the Screw Washery,
major portion of the impurities will be removed. The washed
salt will enter the Wet Mill Section (Grinding / Hammer Mill).The
brine is added here to give slurry out put from the mill.
The out put is taken into slurry tank where further brine
is added. The slurry is then pumped to the Elutretion tank
for washing. The washed slurry is then transferred to Thickner
and decanted brine is transferred to the clarifier by means
of Elutretion & wash tank. From here the clear brine is
transferred to the brine tank and remaining to settling pond.
Here at settling pond the settled mud is drained and the upper
layer of clear Brine is pumped to the Screw Washery. The Salt
after removal of water in Thickner is fed to the Centrifuge.
In Thickner, the slurry concentration achieved is 50 %.
The salt will then be centrifuged to remove the liquid from
it, and it will be conveyed through the blender cum screw
conveyor and belt to fluidized bed dryer. On its way to dryer
it will be Iodized.
The washed salt with Iodine Solution will get fluidized in
Dryer and the Iodine mixing will become uniform. Then dry
and cooled salt will come out of FBD and will then travel
to Vibro Screen through bucket elevator. After screening the
oversize salt it will enter the pin mill for size reduction
and then get recycled through bucket elevator to the screen.
After screening, the undersize will be conveyed to a blender
cum screw conveyor. Here the Free Flow Agent will be mixed
at a specified and predetermined flow rate.
The blender cum conveyor will mix the content well and convey
the same to silo. The finished good from silo bottom will
be conveyed and distributed by a screw conveyor to Packing
Machines. Then the pouches of 1.0 Kg. will be sealed. Another
conveyor will carry the refined salt to the bagging and stitching
machine where it will be packed in 50 kg bags.
LIST OF EQUIPMENT
| 1. |
Belt / scew conveyors |
| 2. |
Washery |
| 3. |
Wet mill |
| 4. |
Tanks |
| 5. |
Pumps |
| 6. |
Centrifuge |
| 7. |
Fluidized bed drier |
| 8. |
Bucket Elevators |
| 9. |
Vibro screen |
| 10. |
Silos |
| 11. |
Packing / Bagging machine |
| 12. |
Pin mill |
Production Capacity : 1 TPH - 40 TPH
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