Internal Lifter Plates: Plate Height 150-300 mm

Component Specifications

Definition

Internal lifter plates are strategically positioned steel plates mounted on the inner wall of rotary drum granulators used in compound fertilizer production. These plates lift the fertilizer mixture as the drum rotates, creating a cascading motion that enhances material mixing, agglomeration, and heat transfer during the granulation and drying processes. Their design directly impacts granule size distribution, density, and production efficiency.

Working Principle

As the rotary drum rotates, internal lifter plates scoop and elevate the fertilizer material to a predetermined height. When the material reaches the apex, it cascades back down in a curtain-like shower, exposing maximum surface area to hot air streams. This continuous lifting and cascading action promotes uniform coating of particles, efficient moisture evaporation, and controlled agglomeration through repeated contact between particles and binding agents.

Materials

Typically constructed from abrasion-resistant steel (AR400 or AR500), stainless steel (304 or 316 for corrosive environments), or carbon steel with protective coatings. Material selection depends on fertilizer composition, operating temperature (typically 80-200°C), and corrosion resistance requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Spacing	300-600 mm along drum length
Plate Height	150-300 mm
Mounting Angle	45-60 degrees
Surface Finish	Smooth or textured depending on material flow characteristics
Plate Thickness	8-16 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, DIN 8580, ASME B46.1

Parent Products

This component is used in the following industrial products

Rotary Drum Granulator for Compound Fertilizers

Industrial machine for producing uniform fertilizer granules via rotary drum agglomeration.

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Engineering Analysis

Risks & Mitigation

Plate wear from abrasive materials
Material buildup reducing efficiency
Structural failure from fatigue
Corrosion in humid environments

FMEA Triads

Trigger: Abrasive fertilizer compounds
Failure: Excessive plate wear reducing lifting capacity
Mitigation: Use abrasion-resistant materials and implement regular thickness monitoring

Trigger: Moisture and chemical exposure
Failure: Corrosion leading to structural weakness
Mitigation: Apply protective coatings and select corrosion-resistant alloys

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1.5 mm on critical dimensions, surface flatness within 0.5 mm/m

Test Method

Dimensional verification with laser scanning, material hardness testing (Rockwell C), and load testing at 150% of operational requirements

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Internal Lifter Plates

Manufacturer profiles associated with Internal Lifter Plates.

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Frequently Asked Questions

What is the primary function of internal lifter plates in rotary drum granulators?

The primary function is to lift and cascade fertilizer material to create uniform mixing, promote agglomeration, and enhance heat and mass transfer during granulation and drying processes.

How do lifter plate design parameters affect granule quality?

Plate height, angle, and spacing directly influence material residence time, cascading pattern, and particle collision frequency, which determine granule size distribution, density, and sphericity.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Internal Lifter Plates