Iodized Salt Crusher Washing Refining Drying Packing equipment of Whole Salt Production System
Sea Lake Salt Production Line is a set of equipment that our factory has meticulously developed for crude raw sea salt and lake salt.
Various capacity is available for buyer's different requirement (3-30t/h or customized).
Three washing is as follows:
First Screw washing
Stand-up stirring washing
Three crushing is as follows:
The combination of first crushing, wet crushing and dry crushing has greatly improved the salt quality. The above operation is adjustable according to the crude salt and user's requirements on finished salt quality.
Finished has high purity, shiny appearance, free liquidity and stable iodine content.
Low loss, the loss of NaCl is under 8%.
Low energy consumption and investment.
Equipment is easy to operate and maintain.
The salt production line begins with raw salt, and consists of the following:
|1. Salt feed hopper||10. Brine tank||19. Belt conveyor|
|2. Rationed screw conveyor||11. Thickener||20. Sewing sacks|
|3. Pikcing belt machine||12. Centrifuge||21. LCD electronic scale|
|4. De-ironing separator||13. Screw conveyor||22. Chain grate coal-fired hot blast stove|
|5. Screw washer||14. Iodine adding machine||23. Slag discharge machine|
|6. Roll crsher||15. Vibration fluidized bed dryer||24. Coal conveyor|
|7. Agitating salt wahser||16. Cyclone dust extractor||25. Electric control cabinet|
|8. Slurry pump||17. Spray washer||26. Packing machine|
|9. Agitating tank||18. Bucket elevator||etc.|
Process Of Salt Refining
(A) Raw salt feeding (B) Salt washing & Milling (C) Dosing of additives & coating (D) Centrifuging (E) Drying (F) Sizing & Conditioning (G) Packing (H) Brine recycle
A) Raw salt is fed to the raw salt hopper from the stockyard or directly unloaded from the dumper. Below this hopper there is a feeder arrangement. This feeder feeds material to a conveyor. This conveyor has magnetic separators at the feed and discharge points to remove iron pieces like nails, nuts and bolts and other magnetic debris. The conveyor discharges raw salt to the feed hopper of the wet mill.
B) Wet mill grids and control the size of the product and also removes soluble entrapped in grained impurities present in the raw salt crystals. In this process raw salt is milled with brine to achieve the desired results. Salt slurry from the wet mill falls by gravity into a slurry tank below. In the slurry tank more brine is added to carry out primary elutriation. Overflow of the slurry tank is carried to the settling ponds. Salt slurry is pumped to the wash tank for main elutriation. The overflow brine from wash tank is taken into a clarifier for purification and to recycle it back into the system.
C) Salt slurry from the wash tank is pumped to a thickener where the slurry is conditioned for centrifuge. This as a dual purpose tank that also carries our secondary elutriation as well as thickening of the salt slurry. This slurry is then fed to the centrifuge. Salt cake from the centrifuge is taken up by a screw feeder and the mother liquor is discharged to slurry tank below,
D) The salt cake discharged into the screw feeder is dosed with iodine and other additive anti caking agent before it is carried to the fluid bed dryer.
E) The fluid bed dryer is an internationally accepted option for drying salt cake. It is an iIntegrated system involving two sections for heating and subsequent cooling the product. Hot air is blown with the help of fan into the salt bed to achieve the required dryness of final product. Ambient air is blown into the cooling section to cool the hot may be packed in sacs and sealed. Salt from the outlet of the dryer is carried up through a bucket elevator for sizing and conditioning.
F) The dry salt from the bucket elevator is fed to a gyro screen. Oversize from the screen is sent to a dry mill (pin mill) for regrinding. The sized product is fed to the blender for conditioning to make it free flowing or iImparting properties and composition that may be required. Output from the dry mill is sent back to the screen to avoid any mixing of oversize with the final product.
G) Final product from the blender is stored in a silo. These silos feed the packing machines to pack the final product to pack the production 1 Kg. to 50 Kg. bulk packing as may be required.
H) Clear brine that overflows from the clarifier is taken to a brine tank. Sludge that settles in the clarifier is discharged iInto the settling tank. Brine from the brine tank is pumped into a brine header. This brine header distributes brine at predetermined rates to various tanks. Run-off brine from the settling pond is recovered and pumped by a transfer pump back into the process. Sludge that settles at the bottom of the pond is scrapped and disposed off to the salt pans or any other approved site.
Main equipment-Vibrating Fluidized Bed Dryer Features
HP series vibration fluidized bed dryer is driven by the vibration force caused by vibration motor. The material in a given direction under the action of the force of leaping forward, at the same time a bed type cloth uniform wind hot air in a fluidized state of material, material particles in contact with the hot air fully, intense heat and mass transfer process, high thermal efficiency, cavity in the state of the negative pressure, moist air is being exhausted from induced draft fan, dry material is being exhausted from port layout, so as to achieve the ideal effect. This machine is widely used in salt industry of powdery and granular materials such as operation of drying, cooling and humidifying.
Vibrating Fluidized Bed Dryer Specification
Fluidized bed area
(m × m)
|Reference of water evaporation (kg/h)|
|HP - 3 × 4.5||0.3 × 4.5||40 - 70||1.5 × 2|
|HP - 4 × 4.5||0.4 × 4.5||65 - 100||2.2 × 2|
|HP - 6 × 4.5||0.6 × 4.5||80 - 130||2.2 × 2|
|HP - 6 × 6.0||0.6 × 6.0||120 - 180||3.0 × 2|
|HP - 6 × 7.5||0.6 × 7.5||150 - 220||3.7 × 2|
|HP - 9 × 6.0||0.9 × 6.0||160 - 280||3.7 × 2|
|HP - 9 × 7.5||0.9 × 7.5||180 - 300||3.7 × 2|
|HP - 12 × 7.5||1.2 × 7.5||300 - 400||5.5 × 2|
|HP - 15 × 7.5||1.5 × 7.5||350 - 580||7.5 × 2|
Salt Production flow chart
Client production facility