150 TPD Fully Automated Rice Milling Line
68% Head Rice Yield · Hunan, China · Delivered 2025
AmGrainTech delivered a 150 TPD fully automated rice milling line in Hunan, China in 2025: head rice yield 68% (industry average ~62%), milling yield +3 percentage points over the client's old line, labor cost down 30% — with the whole line run by just four operators and payback in about two years.
Project Gallery
Technology: New Whitening + Polishing Combination
The line's headline numbers — 68% head rice yield and +3 points of milling yield — come from a new-generation whitening and polishing configuration integrated with intelligent control:
Emery-Roll Whitener + Iron-Roll Air-Blast Polisher
A new-type emery-roll whitener removes bran gently in stages; the iron-roll air-blast polisher finishes the kernel with controlled friction and airflow — protecting the grain while lifting appearance.
Intelligent PLC, Full-Process Automation
From cleaning to packaging, the PLC coordinates every stage — one-touch start/stop, interlocked protection, and consistent parameters across shifts.
Minimal-Manpower Operation
The whole line needs only four operators versus 10–12 for traditional same-scale lines — cutting labor cost by 30% and removing human variability from quality control.
Process Flow
Complete line from paddy intake to packaged premium rice:
- Cleaning & de-stoning → husking → paddy-rice separation
- Multi-pass whitening (emery roll) → polishing (iron-roll air-blast)
- Grading → color sorting → weighing and packaging
Project Background, Challenge & Solution
Client Background: The client is a large grain-processing enterprise in Hunan Province, mainly engaged in procurement, processing, and sale of high-quality indica rice. The original line had aged equipment with low milling and head rice yields, struggling to meet growing demand for premium rice.
Challenge: The client needed a fully automated 150 TPD line with head rice yield ≥ 68% (industry average ~62%) and milling yield at least 2 percentage points higher than the original line, while greatly reducing reliance on manual labor.
Solution: AmGrainTech supplied a complete line from cleaning to finished-product packaging, built around a new-type emery-roll whitener combined with an iron-roll air-blast polisher and an intelligent PLC system — the whole line needs only four operators.
Result: Operating data shows head rice yield of 68%, exceeding expectations; milling yield improved by about 3 percentage points; labor cost down 30%. At current output and quality premium, full equipment investment is expected to be recovered within about two years. The project became a demonstration reference for domestic rice-milling upgrades.
Project Outcomes
Delivery & Commissioning Timeline
150 TPD layout engineered around premium indica rice targets
Whitening, polishing and control systems built at our base (ISO 9001)
On-site installation; commissioned 2025
68% head rice confirmed in operation; demonstration project role
Why Head Rice Yield Is the Number That Matters
- Head rice sells at a premium — every point of head rice yield above the ~62% industry average is direct revenue on premium indica rice.
- Gentle multi-pass whitening beats aggressive single-pass — staged emery-roll whitening removes bran without stressing the kernel.
- Automation protects consistency — PLC-held parameters keep yield stable across shifts; manual lines drift.
- Labor savings compound — 4 vs 10–12 operators cuts cost 30% and pays back the automation investment within ~2 years.
Client Evidence
“Head rice yield reached 68% — every extra point of whole kernels is extra revenue. The line paid for itself in about two years.”
Frequently Asked Questions
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Explore Related Solutions
Upgrading to a fully automated milling line?
Tell us your capacity target, current head rice yield and manpower — we return a configured automation proposal with projected yield and payback.