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Grain Processing & Food Safety Application
Magnets for Rice Industry in Pakistan
Heavy-duty magnetic plates, drawer magnets, and chute separators engineered to eliminate tramp metal and protect rice milling machinery across Pakistan.
Industry Challenges & Engineering Requirements
When tramp metal enters the rice milling stream, the consequences are severe: a single stray bolt can crack expensive rubber de-husking rollers, destroy emery stone polishers, puncture bucket elevator belts, or spark a dangerous dust explosion inside elevator shafts. Furthermore, metal shavings that reach finished export rice will cause container rejections and violate stringent international food safety (HACCP / ISO 22000) standards. Millers need deep-field magnetic barriers at every processing stage.
Recommended Magnetic Solutions & Assemblies
Specialized magnetic equipment configurations engineered for magnets for rice industry:
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Gravity Chute Magnetic Plates
Heavy-duty stainless steel plate magnets installed along the base of inclined chutes between the paddy intake hopper, pre-cleaner, and rubber-roll de-huskers, capturing large tramp iron before it strikes machinery.
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Hump Magnets & Gravity Spout Separators
Dog-leg shaped hump enclosures containing dual magnetic plates that force tumbling paddy to change trajectory, bringing all grain layers into direct contact with magnetic capture faces.
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Magnetic Drawer Grids for Sortex Protection
High-gradient neodymium tube grids (typically 10,000+ Gauss) installed immediately above optical colour sorters (Sortex) and final packaging scales to capture microscopic iron powder and rust particles.
Crucial Technical & Engineering Considerations
Key variables to evaluate before purchasing or installing magnets in this application:
- • Grain velocity vs capture depth: Paddy flowing down steep chutes moves rapidly; deep-field ceramic plate magnets are needed for deep reach (up to 75-100mm), while high-gauss neodymium plates are used where flow velocity is high.
- • Stepped-face design: Rice flowing continuously over a flat plate can knock trapped metal back into the stream. Stepped plates provide a stainless steel ridge that shields trapped iron from the rushing grain stream.
- • Wear resistance from abrasive rice husks: Paddy husks contain high silica content that causes abrasive wear on metal surfaces. Housings must be fabricated from heavy-gauge 304 stainless steel.
- • Hygienic cleaning access: Hinged or drawer-style designs allow operators to swing the magnet open and wipe away collected metal without stopping the entire milling line.
Installation, Mounting & Maintenance Protocols
1
Install primary magnetic plates immediately after the paddy intake hopper and before the pre-cleaner and destoner.
2
Install secondary magnetic plates before rubber roller de-husking machines and emery stone cone polishers.
3
Place high-intensity neodymium drawer magnets directly above Sortex optical sorter feeding chutes.
4
Mandate that mill operators clean magnetic plates at the beginning of every 8-hour shift and log collected metal in HACCP maintenance records.
Selection & Sizing Matrix for Pakistani Operations
Paddy intake & raw grain chutes: Heavy-duty ferrite or rare-earth stepped magnetic plates (400mm to 1200mm wide)
Pre-cleaner & de-husker spouts: Hinged easy-clean stainless steel plate assemblies
Final milled rice & packaging lines: Multi-tier high-intensity neodymium magnetic drawer grids
Magnets for Rice Industry FAQs
Common questions answered by our engineering and supply team
Why are magnets installed before optical colour sorters (Sortex) in rice mills?
Optical sorters detect discolored grains, but fine iron particles and wire shards can damage delicate vibratory feeders, scratch glass viewports, or pass through into export packaging, causing customer claims.
What is the advantage of a stepped magnetic plate over a flat plate for rice chutes?
The step creates a sheltered zone behind a stainless steel ridge. Once a nail or bolt is pulled to the plate, the moving stream of rice cannot dislodge it and wash it back down the chute.
Do you supply magnetic plates to rice mills in Kamoke, Muridke, Hafizabad, and Larkana?
Yes, Faisal Magnets supplies magnetic separators and replacement plates directly to rice processing centers across Punjab and Sindh.
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Wholesale & Retail
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Wholesale & Retail
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