How To Remove Mud Balls, Black Stones, And Other Metallic Impurities From Salt?


India is the third-largest producer of salt in the world. Salt is mainly sourced from sea brine, lake brine, subsoil brine, and rock salt deposits. Thus the presence of unwanted impurities is very much predictable. 

Recognized as one of the five basic taste sensations, Salt plays a crucial role in maintaining the health of humans. 

Salt is a primary source of sodium and chloride ions in the human diet. Impurities in salt can majorly impact the food taste and health of humans. Hence, the food industry needs to conserve salt purity.

The removal of mud balls, black stones, and other metallic impurities from salt is critical for the recovery of pure salt. And to ensure that Jaykrishna Magnetics Pvt. Ltd., a leading manufacturer of magnetic and vibratory equipment in India, has developed an advanced and highly effective magnetic destoner.

For improving filtration and separation performance while reducing the loss of valuable products, we continuously design and manufacture well-structured and modern magnetic destoner. 

So, browse through this blog, where we summarize how our magnetic destoner contributes to the remarkable separation process and successfully works in removing mud balls, black stones, and other magnetic impurities from salt.

What Is Magnetic Destoner? 

Magnetic Destoner is one of the most advanced magnetic separators designed for removing various kinds of impurities present in salt.

The high-intensity magnetic destoner is specially designed for food industries and can easily kick out unnecessary impurities like mud balls, black stone, and other paramagnetic impurities from the products.

How Does Magnetic Destoner Work?

Working principle of magnetic destoner:

Designed uniquely, our Magnetic Destoner solves all separation problems effectively. 

Our Magnetic Destoner has one belt which runs on a magnetic role that traps the paramagnetic contamination. Through this process, the present impurities like mud balls and paramagnetic particles are trapped.

The feed hopper is positioned at the top of the machine, where two connections are placed for connecting to the mill or cleaning line.

Further, with the help of inserted vibratory motor in the machine, the materials fall to the vibratory feeder.

Both the vibratory motor and feeder are mounted to springs. The vibratory machine controls the feed by its two feed gates. Then the materials fall down on a Teflon-based conveyor belt.

Then whenever the materials fall down, the separated magnetic content is dropped into the outlet. And the other non-magnetic content falls into another outlet present on the right side. 

With the easy and effective working process, our magnetic destoner is capable enough to provide the best solution for separating mud balls, black stones, and other paramagnetic contaminants.

Salient Features Of Magnetic Destoner:

The various advantages of magnetic destoner are

  • Abrasion-resistant conveyor belt 
  • Low maintenance
  • Robust construction
  • Easy to move and operate  
  • Dust proof construction
  • Low power consumption
  • Magnetic strength power available from 8000 to 11000 Gauss
  • Highly efficient iron separation system

Technical Specifications Of Magnetic Destoner:

  • Magnetic Rolls are available in different sizes:
  1. 75 mm (3 inches)
  2. 100 mm (4 inches)
  3. 150 mm (6 inches)
  4. 200 mm (8 inches)
  5. 240 mm (9.5 inches)
  • Diameter and widths size up to 2000mm.
  • 0.5 HP variable speed DC/AC geared motor.
  • Adjustable geared motor for driving the roll from 0 to 280 RPM.
  • High-quality unbalanced vibratory motors.
  • Abrasion-resistant endless conveyor belt with a thickness of 0.35mm.

How Do Remove Mud Balls, Black Stone, And Other Impurities From Salt? 

To yield 100% clean salt crystals, Jaykrishna Magnetics Pvt. Ltd. manufactures high-intensity Magnetic Destoner. 

With the use of high-intensity magnets fitted in the body, Magnetic Destoner effectively separates even the tiniest impurities present in the salt.

The convincing process takes place on an abrasion-resistant, 0.35 mm thick conveyor belt that ensures a continuous flow of the substances and removes impurities like mud balls, black stones, and paramagnetic particles efficaciously.

In the end, the impurities fall in the discharge outlet, and clean, white salt is gathered at the other outlet.

Applications Of Magnetic Destoner:

  • Rice Cleaning
  • Wheat Cleaning
  • Corn Cleaning
  • Pulses Cleaning Spices
  • Cleaning Seed Cleaning
  • Semolina Cleaning
  • Chilli Flakes
  • Salt Cleaning
  • Sesame Cleaning
  • Cumin Cleaning
  • Fennel Seed Cleaning


Product purity is important in the food industry. To ensure the product is metal-free, Jaykrishna Magnetics Pvt. Ltd. leading manufacturer in Ahmedabad, designed magnetic destoners using advanced technology that makes the segregation process in the food processing industry easy and effective.

For maximum purity and productivity, we provide the optimum method of separation. And for the salt industry, the ultimate solution of high-intensity magnetic destoner that ensure optimum performance and longevity.

 Specialized as a leading Magnetic Destoner Manufacturers, Jaykrishna Magnetics Pvt. Ltd. produces machines that fulfill the requirements of diverse industrial sectors.

To know more about our product range, visit our website:  

If you are looking for Magnetic Destoner, then feel free to contact us, we will guide you with our best help to provide you with the fastest solution to your separation problems.