Salt Refinery
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 tanked into slurry tank where further brine is added. The slurry is then pumped to the Elutriation tank for washing. The washed slurry is then transferred to Thickener and decanted brine is transferred to the clarifier by means of Elutriation & 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 Thickener is fed to the Centrifuge. In Thickener, 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 bucked 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 1.0Kg. will be sealed. Another conveyor will carry the refined salt to the bagging and stitching machine where it will be packed in 50Kg bags.
List of Equipments
- Belt/screw conveyors
- Washery
- Wet mill
- Tanks
- Pumps
- Centrifuge
- Fluidized bed drier
- Bucket Elevators
- Vibro screen
- Silos
- Packing / Bagging machine
- Pin mill
Production Capacity
1 TPH - 40 TPH