Why Is Rice Grading So Important in Modern Rice Milling?

After rice whitening and polishing, the finished rice contains a mixture of:

• Head rice
• Large broken rice
• Small broken rice

• Rice bran residues

Without proper grading, the final product quality becomes inconsistent, reducing its market value and customer acceptance.

In many countries, rice selling prices are directly linked to the percentage of head rice. A higher head rice ratio means higher profits for rice mill owners. Therefore, rice grading has become one of the most critical processes in modern rice milling plants.

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What Is a Rotary Rice Grader?

A Rotary Rice Grader is a specialized rice processing machine designed to classify white rice into different grades based on grain size and broken rice content.

The machine uses multiple layers of precision screens to separate:

✅ Head Rice

✅ Large Broken Rice

✅ Small Broken Rice

✅ Fine Particles

The graded rice can then be packed according to different market standards, allowing rice processors to maximize product value and improve profitability.

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How Does a Rotary Rice Grader Work?

The grading process is simple yet highly efficient:

Step 1: Uniform Feeding

Finished white rice enters the grader through the feeding inlet.

Step 2: Rotary Screening

The rotating screen system continuously separates rice according to particle size.

Step 3: Multi-Layer Classification

Different screen layers classify the rice into several grades:

• Premium Head Rice
• Standard Rice
• Large Broken Rice

• Small Broken Rice

Step 4: Separate Discharge

Each rice grade is discharged independently for packaging or further processing.

This process ensures stable grading performance and consistent rice quality.

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Key Benefits of Rotary Rice Grader Machines

Improve Rice Quality

Accurately separates broken rice from head rice, producing cleaner and more uniform finished rice.

Increase Selling Price

Higher purity and uniformity allow rice processors to sell premium-grade rice at better prices.

Reduce Product Complaints

Consistent rice grading improves customer satisfaction and brand reputation.

High Processing Capacity

Available capacities range from 5 T/H to 15 T/H, suitable for small, medium, and large rice mills.

Low Energy Consumption

Optimized transmission system ensures low power consumption and stable operation.

Easy Maintenance

Automatic screen cleaning system prevents blockage and reduces downtime.

Common Questions Buyers Ask Before Purchasing a Rice Grader

1. What Capacity Rice Grader Do I Need?

Rice Mill Capacity	Recommended Rice Grader
15-30 T/D	Small Rotary Rice Grader
40-60 T/D	Medium Rotary Rice Grader
80-120 T/D	Large Rotary Rice Grader
150-300 T/D	High-Capacity Multi-Layer Grader

2. Can It Handle Long Grain Rice?

Yes.

The screen configuration can be customized for:

• Long Grain Rice
• Basmati Rice
• Jasmine Rice

• Parboiled Rice

• Medium Grain Rice

• Short Grain Rice

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3. How Much Broken Rice Can Be Removed?

Depending on raw material quality and milling conditions, the grader can efficiently separate head rice and broken rice to meet market requirements.

4. Can It Be Used in Existing Rice Mills?

Absolutely.

The machine can be integrated into:

• New Rice Mill Plants
• Existing Rice Processing Plants
• Rice Mill Upgrading Projects

• Parboiled Rice Plants

Why More Rice Mills Are Upgrading Their Grading Systems

As rice markets become more competitive, buyers increasingly demand:

• Higher Head Rice Yield
• Better Rice Appearance
• Lower Broken Rice Content

• Uniform Grain Size

• Export-Grade Rice Quality

A high-performance Rotary Rice Grader helps rice mill owners achieve these goals while improving profitability and operational efficiency.

Co-Grain Rotary Rice Grader Solution

As a professional rice mill engineering solution provider, Co-Grain supplies customized Rotary Rice Graders for various rice milling capacities.

Our services include:

✓ Process Design

✓ Equipment Manufacturing

✓ 3D Plant Layout Design

✓ Installation & Commissioning

✓ Operator Training

✓ Spare Parts Support

✓ Complete Rice Mill Turnkey Projects

Available for:

• 15T/D Rice Mill Plant
• 30T/D Rice Mill Plant
• 60T/D Rice Mill Plant

• 100T/D Rice Mill Plant

• 200T/D Rice Mill Plant

• Parboiled Rice Processing Plants