Whitener

Whitener is otherwise known an abrasive polisher. This is a technique used to remove a layer of bran from rice by polishing using rough stones. The rice is gently passed through the abrasion chamber between specific silicon carbide stones and, by this process, the brown rice turns white. The removed bran is collected by the attached external suction blower.

Silicon Carbide Stones
Silicon Carbide Stones

Green silicon carbide and Black Silicon carbide are used. Stones are used based on type of processed rice

Sieves
Sieves

Hardened Steel is used for longer self-life, and multiple range of perforation for multiple combinations.

Top-to-bottom Flow
Top-to-bottom Flow

Machine is designed to feed rice from top bran is removed in the middle and collected at the bottom

Magnehelic Gauge
Magnehelic Gauge

Maintaining proper chamber pressure is one of the key feature to be ensured at the time of machine startup

Uniform whiteness
Uniform whiteness

2 Sided inlet feed system is provided to give even load to reduce broken and bring uniform whiteness

Rigid and low maintenance
Rigid and low maintenance

Quick and easy replaceable screen with sieves. minimum wear and tear parts

Supported Commodities
Models & Technical Specification
  Hybrid Model Regular Model
Model WTH02 WTH03 WTR04 WTR06
Capacity (TPH) 2.5 to 3 3 to 4 3 to 4 5 to 6
Motor Power (HP) 25 30 40 50
Motor RPM 1440 1440 1440 1440
Abrasive Stone count 6 6 6 6
Stone Dimentions (Dia x Thickness) 250 x 60 250 x 60 310 x 70 310 x 90
Total Screens 3 3 3 3
Whitener Screen Size 432 432 478 621
Weight (Kg) 800 850 960 1600
Dimension LxBxH (mm) 1020 x 500 x 1600 1020 x 500 x 1600 1580 x 730 x 1970 1650 X 800 X 1700
Blower Motor Power (KW/HP) 5 5 5 10
Cyclone 950 950 950 1100
Bran discharger 8" & 1.5 HP 8" & 1.5 HP 8" & 1.5 HP 8" & 1.5 HP
Magnet (inches) 5" 5" 4"(2 nos) 4"(2 nos)
Result
Input

Output

Brown Rice

Brown Rice

Semi polished Rice

Rice Bran

Frequently Asked Questions

How many stones does whitener have?

Whitener comes with 6 stones in total.

Does whitener have rice variety restriction?

No, whitener itself has various components with various critical parameters, for each variety of rice the dimensions or the grade of components may vary.

Should I think a lot about a stone grade in whitener?

No, orange engineers will assess the type of rice and stone to be used in your rice mill and we will give you the best solution, you don’t have to worry about it.

What are green stone and black stone in whitener?

Greenstone is green silicon carbide and Black stone is Black Silicon Carbide. Not all type of processed rice needs to be used with high-grade stone Physical Properties: Green silicon carbide is of higher purity than black silicon carbide. Green silicon carbide is sharp and friable, which makes it a good abrasive. It is the hardest of the conventional abrasives and it's a bit high in cost.

Does adding husk actually helps in bringing out the best rice output from whitener?

Yes, husk has more silica content on its layer, which acts as additive abrasive material making rice evenly polished.

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