Salt-separating & Recycling Roaster vs Batch Roasting Machine

In the processing of nuts and dried fruits, the choice of roasting equipment directly affects product quality and production efficiency. Among the common types, salt-separating & recycling roasters and batch roasting machines are often compared.

So, what exactly is the difference between them, and which applications are they suitable for?

1. Core Difference in Working Method

① Batch Roasting Machine: One Batch at a Time

The working process of a batch roasting machine is straightforward: Load → Roast → Discharge → Repeat

Its characteristics include:

• Batch-based production 
• Each batch is processed independently 
• More suitable for standalone operation 

① Salt-separating & Recycling Roaster: An Upgraded System with Circulation

The salt-separating & recycling roaster is structurally optimized, especially for salt-roasting processes.

Its key feature: salt does not discharge with the product, but circulates inside the machine and is automatically separated

It also offers:

• Continuous feeding and discharging (in one side, out the other) 

• Integration with production lines 

• Higher level of automation 
  
  

2. Salt Handling and Direct Roasting (Core Difference)

① Batch Roasting Machine

Supports direct roasting (without salt) 

Supports salt roasting 

However:

• After salt roasting, salt and product are mixed together 

• Manual or additional separation is required 
  
  

Impact:

• Higher labor cost 

• More processing steps  

② Salt-separating & Recycling Roaster

• Supports salt roasting (automatic salt circulation and separation) 

• Supports direct roasting (without salt or after removing salt) 
  
  

Key features:

• Equipped with a salt separation system and return channel 
• Salt remains inside the drum during roasting 
• Automatically separates salt from product during discharge 

Advantages:

• Salt can be reused 
• No manual separation required 
• More efficient and labor-saving 

3. Applicable Material Range

① Batch Roasting Machine

• Fewer restrictions on material size 
• Can handle small particles (such as sesame) in direct roasting 
• Wider range of applications overall

• Suitable for materials with a diameter of 3 mm or above 
• Mainly used for: Cashews, peanuts, almonds,sunflower seeds, pumpkin seeds, etc.

Note:

• Not suitable for very small particles 
• Small materials may pass through the screen 
  
  

4. Automation and Production Mode

① Batch Roasting Machine

• Adjustable temperature, speed, and time 
• Can be used as a standard standalone machine, and can also be equipped with a PLC system for automated control 
• Suitable for flexible and independent production 
  
  

②Salt-separating & Recycling Roaster

• Comes standard with a PLC control system 
• Can be integrated into a complete production line (feeding, roasting, cooling, etc.) 
• Supports continuous production 
  
  

In general:

• Batch machine: standalone and flexible (with optional automation upgrade) 
• Salt-separating & recycling roaster: automated and system-based 
  
  

5. Differences in Production Experience

Batch Roasting Machine

• Intermittent operation 
• Requires manual salt separation after salt roasting 
• More labor involvement 
• Suitable for multi-product, small-batch, flexible production 
  
  

Salt-separating & Recycling Roaster

• More continuous workflow 
• Automatically completes roasting and salt separation 
• Reduces manual intervention 
• More suitable for large-scale and standardized production 
  
  

6. Quick Summary

Batch Roasting Machine: wider application range, especially suitable for small particles in direct roasting; optional PLC; requires manual salt separation after salt roasting

Salt-separating & Recycling Roaster: supports both direct roasting and salt roasting, with automatic salt separation and recycling; more efficient and labor-saving (suitable for materials ≥3 mm)