HP series large capacity whole production line for table salt mechanical refining processing
The salt refinery process description
The crude salt is transported to the screw salt washing machine for the first washing, then crushed by roller crusher to get the salt with suitable size.This kind of salt will be washed by stirring washing machine and countercurrent washing machine for two or three times, and then get purified salt. The next step is to enter the centrifuge to remove most of the water. After this the salt will be dried by vibrating fluid drying bed for the drying to get the finished salt with 0.4% water content. During the salt transportation from centrifuge to vibrating fluid drying bed, there will be an iodized machine to add iodine into the salt. The final step is to packing the finished salt.
Process of the plant
Raw salt is sent to a feed hopper at appropriate capacity and then transferred to a conveyor band.
A magnet is used to remove trash metals from this conveyor.
Raw salt is washed in a special washing system.
Crude salt is ground in a wet grinding system with a saturated brine.
Salt slurry is sent to a tank and pumped to a washing tank with one of centrifugal, high-pressure pump, centrifugal pump, axial flow pumps or gear pump.
Slurry is removed from slurry in washing tank.
Saltwater overflowing from washing tank is recycled.
Salt slurry is sent to hydrocyclone to thicken it.
Salt is removed from water in large scale by centrifugation. Iodine dosing is made.
In the fluidized bed dryer, salt is completely dried.
Drying milling is done to thin clumping salts.
Salts are passed through a screening machine to be classified.
Then the tablet salt will be carried out, fine grade salt is packed in different packages
We has designed a unique washing system that is based in salt and brine countercurrent system in a custom designed screw. The washing process allows to identify soluble and insoluble impurities in raw salt using an advanced countercurrent brine system.
The washing and purification system is based in a mechanical principle of pure brine washing to increase purity of the salt crystals.
After the Washing process the salt goes into a centrifuge system with the latest centrifuge technology in order to further wash and purify the crystals while reducing humidity of the product in the process.
Salt centrifuges allow for precise liquid-solid separation process. A continuous separation process engineered to combine high availability with minimum maintenance.
we have developed our own Fluid Bed dryer technology, designed to provide continuous drying solutions for all types of salts (sea salt, rock salt, vacuum and/or lake salts). Manufactured in the best materials for resistance and avoiding corrosion.
Our drying system allows to dry and cool Salt using a combination of airspeed and mechanical motions to treat each particle efficiently and with minimum dust formation. By shacking the product up and down we achieve a uniform drying result with shorter time and lower temperature.
We has also engineered a crushing process to control the size of the Salt grain. With our horizontal roller crushers, the product goes in a vertical flow and the machine allows to control de crystal size. Our crushing and grinding machines are produced with high quality stainless steel and allow the operator to adjust the size of the crystal that will go out of the process.
we do offer a machinery range to add additives in Salt. It can be either Iodine, Fluor or anti-caking. The solution is a linear system that pulverizes the additive in the production a uniform way in order to obtain the Iodized Salt without any problem. Our process guarantees a perfect distribution of additives in the Salt crystals and meets the highest food and grocery standards required for food-grade distribution.
We also support through our equipment supply the global and national iodine programs, working with key public, private, scientific and civic stakeholders. We focus on universal salt iodization as the most cost-effective and sustainable solution for prevention of iodine deficiency disorders.
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.|
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