Introduction
A reliable spice screening and iron removal solution is essential for food manufacturers producing powdered spices with consistent particle size and high product purity. During spice processing, materials must be accurately classified while ferrous contaminants introduced during conveying or mixing are removed before packaging. This case study explains how a Pakistani spice processor improved production efficiency using an 800 Rotary Vibrating Screen with an integrated iron remover, achieving stable 20–60 mesh classification at 200 kg/h.
Project Summary
| Item | Details |
|---|---|
| Project Date | December 26, 2025 |
| Industry | Food Processing |
| Customer Location | Pakistan |
| Material | Spice Products |
| Capacity | 200 kg/h |
| Mesh Sizes | 20, 30, 40, 50 and 60 Mesh |
| Equipment | 800 Rotary Vibrating Screen with Iron Remover |
| Contact Material | SS316 Stainless Steel |
| Base Material | Carbon Steel |
| Screening Purpose | Particle Size Classification and Ferrous Contaminant Removal |
Customer Background
The customer is a food processing company in Pakistan specializing in powdered spice products for the domestic market. Product consistency and cleanliness are important quality requirements before packaging and distribution.
As production demand increased, the customer wanted to improve the screening process by achieving more consistent particle size while removing possible ferrous contaminants generated during material handling and processing.
Challenges in Spice Screening and Iron Removal
Before adopting the new screening system, the customer faced several production challenges:
- Different particle sizes affected the uniformity of finished spice products.
- Small ferrous contaminants could enter the production line during processing.
- Screening and impurity removal required separate operations, increasing handling time.
- The customer needed equipment suitable for food-grade production with easy cleaning and stable operation.
The production line required continuous screening at 200 kg/h while classifying the material into 20, 30, 40, 50 and 60 mesh.
Spice Screening and Iron Removal Solution
After evaluating the customer’s production requirements, Sanyuantang supplied an 800 Rotary Vibrating Screen equipped with an Iron Remover.
The screening system was configured with 20, 30, 40, 50 and 60 mesh screens to achieve continuous particle size classification according to the customer’s product specifications.
To further improve product purity, an iron remover was integrated into the screening process to capture ferrous contaminants before the material entered the next production stage.
Considering the hygiene requirements of food processing, all parts in contact with the spice products were manufactured from SS316 stainless steel, providing excellent corrosion resistance and easy cleaning. The machine base was constructed from carbon steel to ensure structural stability while maintaining a cost-effective design.
By combining screening and iron removal in one production process, the customer simplified material handling and improved overall production efficiency.
Equipment Configuration
| Configuration | Specification |
|---|---|
| Equipment Model | 800 Rotary Vibrating Screen |
| Screening Mesh | 20 / 30 / 40 / 50 / 60 Mesh |
| Capacity | 200 kg/h |
| Iron Removal | Integrated Iron Remover |
| Contact Material | SS316 Stainless Steel |
| Base Material | Carbon Steel |
| Application | Food-Grade Spice Processing |
Please refer to our product information: Rotary Vibrating Screen
Results Comparison
| Item | Before | After |
|---|---|---|
| Particle Size | Inconsistent | Stable 20–60 mesh classification |
| Product Purity | Manual inspection only | Continuous screening with integrated iron removal |
| Production Process | Multiple processing steps | Screening and iron removal completed in one operation |
| Food Hygiene | Higher contamination risk | Improved product cleanliness |
| Maintenance | More manual handling | Routine inspection and cleaning only |
Results of the Spice Screening and Iron Removal Solution
Following installation, the screening system operated steadily at the designed capacity of 200 kg/h.
The integrated iron remover continuously removed ferrous contaminants during production, while the rotary vibrating screen maintained stable particle size classification across all required mesh sizes.
The combined process reduced manual handling, simplified production, and improved the consistency of the finished spice products. The customer also benefited from equipment that met food-grade processing requirements through the use of SS316 stainless steel contact parts.
Conclusion
For spice manufacturers, product quality depends on both accurate particle size classification and effective contaminant control.
In this project, the combination of an 800 Rotary Vibrating Screen and an Iron Remover provided a practical solution for continuous spice screening while improving product purity and supporting food-grade production requirements.
The solution successfully met the customer’s processing target of 200 kg/h and provided reliable 20–60 mesh classification for daily production.
Contact Us
If you are processing spices, seasonings or other food powders and require accurate screening with reliable metal removal, Sanyuantang can recommend a screening solution based on your material characteristics, production capacity and hygiene requirements.
Email: info@sanyuantang.com
Phone: +86-18639095165
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Frequently Asked Questions
1. Why is a spice screening and iron removal solution important?
A spice screening and iron removal solution helps ensure consistent particle size while removing ferrous contaminants introduced during processing. Combining both functions in one production line improves product purity, supports food safety requirements, and reduces manual handling before packaging.
2. What mesh sizes are commonly used for spice screening?
The required mesh size depends on the final product specification. In this project, the customer used 20, 30, 40, 50 and 60 mesh to achieve consistent particle size classification for different spice products while maintaining stable production.
3. Why was an 800 rotary vibrating screen selected for this project?
The customer’s production target was 200 kg/h with multi-mesh classification. The 800 rotary vibrating screen provided sufficient screening capacity, stable operation, and easy cleaning, making it suitable for continuous food-grade spice processing.
4. What is the purpose of installing an iron remover in a spice processing line?
An iron remover captures ferrous particles that may be generated by crushers, mixers, conveyors, or other processing equipment. Removing these contaminants before packaging helps improve product cleanliness and supports higher food quality standards.
5. Why are SS316 stainless steel contact parts recommended for spice processing?
SS316 stainless steel offers excellent corrosion resistance, smooth surfaces, and easy cleaning. It is widely used in food processing because it helps maintain hygiene and extends equipment service life when handling spices and seasoning powders.
6. Can one screening system handle different spice products?
Yes. Rotary vibrating screens can process a wide range of dry food powders, including chili powder, garlic powder, onion powder, cumin powder, and blended seasoning products. Mesh size and screen configuration can be adjusted according to the material characteristics.
7. How can screening efficiency be maintained during continuous production?
Stable feeding, proper screen selection, and regular equipment inspection are key factors. Choosing the correct mesh size and maintaining the iron remover help ensure consistent screening performance and reduce unnecessary production interruptions.
8. How do I choose the right spice screening and iron removal solution?
Selecting the right solution depends on the material properties, required mesh sizes, production capacity, hygiene standards, and installation layout. Providing this information allows engineers to recommend the most suitable screening configuration for your production process.