A rice grader machine classifies milled rice into different size fractions—most commonly head rice (whole kernels) and broken rice—so you can pack consistent grades and meet market specifications. After whitening (and often after polishing), grading is the step that turns “milled rice” into clearly defined products with predictable value. Golden-Cereal™ rice grading machines are designed for stable separation, easy adjustment, and smooth integration into complete rice mill equipment lines.
Why grading is a key quality-control step
Even with a well-tuned husker and rice whitener, every milling process produces a mix of kernel lengths. Without a dedicated grader, whole and broken kernels blend together, causing:
inconsistent product appearance in bags
difficulty matching buyer grade requirements
reduced profitability, because head rice usually commands a higher price
unstable performance of downstream equipment such as color sorters (when input is not uniform)
A properly selected rice grader improves product consistency and allows you to package multiple grades from the same production line.
What a rice grader separates (and what it does not)
Rice grading focuses on size/length separation—it divides kernels by length or thickness depending on configuration. It is different from:
color sorting, which removes discolored/defective grains by optical detection
cleaning/destoning, which removes foreign materials before milling
whitening/polishing, which changes surface finish and whiteness
In many plants, grading is placed before color sorting so the sorter receives a more uniform flow, improving optical accuracy.
Placement in a typical rice mill flow
A common sequence in rice mill equipment lines is:
rotary cleaning machine → destoner → pneumatic paddy husker → paddy separator → rice whitener → rice polisher (optional) → rice grader → color sorting machine (optional) → packing
Stable feeding into the grader matters. Consistent conveying through an elevator and belt conveyor helps avoid surges that can reduce grading accuracy. Many projects also include a dust collector to maintain a cleaner working environment and support reliable operation.
Choosing the right rice grader for your plant
To select a grader that matches your targets, consider:
capacity requirement (tons/day) and peak flow conditions
desired number of output fractions (head rice + broken, or multiple broken grades)
rice variety characteristics and target commercial grade
available space and line layout (in-line vs. multi-outlet discharge)
integration needs with conveyors, gate valves, and packing bins
For plants planning 50–150 tons/day, graders are often sized to match the actual output after whitening, with room for seasonal increases or future expansion.
What makes Golden-Cereal™ rice graders dependable
Golden-Cereal™ supports rice mill projects with:
40+ years experience in rice mill equipment manufacturing and application support
customized equipment matching to your rice type and finished grade goals
turnkey line planning when you want one coordinated solution
export to 20+ regions, with practical delivery and commissioning coordination
installation & training support to help operators set grading performance quickly
service planning and spare parts support to reduce downtime risk
Fast quotation checklist (send these details)
Capacity target (TPD) and working hours/day
Rice type and target commercial grades
Required separation (head rice vs. broken; how many broken grades)
Whether a color sorter will be used after grading
Power supply (voltage/frequency)
Layout drawing or available footprint/height
Share your capacity and grading targets, and Golden-Cereal™ can recommend a rice grader configuration that fits your line and helps deliver consistent, market-ready rice.
