Overview

Lump Breaker

The lump breaker is a coarse grinder and pre-breaker for the size reduction of a varied range of applications such as deagglomeration, rework and breaking down/size reduction of lumps, plates, flakes of product. It could be custom design in single or twin shaft forms. The typical size after delumping is less than 20mm.

1-25mm

Screen Size

20m³/h

Throughput

GMP+

Compliant Design

Principle

Designed to reduce oversized lumps.

Lump breaker diagram

Lump Infeed

Oversized lumps or agglomerated material are fed into the inlet of the lump breaker through a hopper or directly from a conveyor, usually via gravity.

Breaking

Inside the chamber, rotating blades or paddles cut, crush, and break the lumps. The low-speed, high-torque design gently breaks apart soft agglomerates without damaging individual particles.

Discharge

The broken material passes through a perforated screen or grid. Particles smaller than the screen opening fall through and exit via the outlet.

Features

High Efficiency

Designed for continuous processing, capable of handling large volumes of material. By converting large lumps into smaller, free-flowing material, it helps prevent blockages and improves feeding, conveying, mixing etc.

Easy Maintenance

A lump breaker typically consists of one or two rotating shafts equipped with blades or paddles. It allows quick screen swaps to adjust the output particle size. This simplicity makes the equipment easy to maintain and clean.

Ease of Integration

Lump breakers are typically designed for "in-line" installation. They can be easily mounted directly under hoppers, or between conveyors, allowing for a seamless transition in material handling systems.

Specification

Standard Performance Parameters

Feed Lump Size	Up to 300 mm
Output Particle Size	1 - 25 mm
Throughput Range	50 kg/h - 10,000 kg/h
Motor Power	0.75 kW - 10 kW
Rotor Speed	25 - 120 RPM (adjustable)
Mounting Position	Horizontal
Bulk Density Range	0.1 - 2.5 g/cm³

Construction & Configuration Options

Contact Material	Stainless Steel / Alloy Steel
Surface Finish	Ra ≤ 0.8μm
Sealing	Mechanical / Dry Gas Seal
Explosion Protection	Zone 20/21 optional
Inlet / Outlet	Flanged (DIN / ANSI)
Control	VFD / PLC
Certification	CE, GMP, ATEX

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Applications

It can be used where powders may form lumps.

Chemical

Pigments & Inorganic Salts

Raw materials often cake or form agglomerates during storage in silos or transit. Lump breakers are used to restore caked powders to their free-flowing state before they enter reactors or mixers.

Food

Food Ingredients

By breaking down lumps gently, lump breakers help maintain product quality while ensuring hygienic and contamination-free processing conditions.

Pharmaceutical

APIs & Excipients

Lump breakers are applied to process APIs and excipients that may form lumps due to humidity or compaction. Its low-heat operation is important for material integrity.

Fertilizer

Urea & NPK Compounds

By gently breaking down compacted fertilizer lumps into smaller particles, lump breakers prevent blockages in screw feeders, rotary valves, and pneumatic conveying systems.

FAQ

Answers to the most common technical and commercial questions from procurement managers and process engineers evaluating lump breakers.

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Is a lump breaker the same as a mill?

No. A mill is designed to reduce the actual particle size (e.g., from granules to fine powder). A lump breaker specifically targets agglomerates to restore flowability, leaving the original material intact.

Does a lump breaker generate dust or fines?

No. A lump breaker produces minimal dust and fines because it operates at low speed and uses gentle mechanical action.

Can a lump breaker handle wet or sticky materials?

Yes, many lump breakers are designed to handle slightly moist or sticky materials. However, for adhesive, or paste-like materials, a specialized crusher, shredder may be more suitable.

Where is a lump breaker installed in a process line?

A lump breaker is typically installed at critical transfer points, such as under hopper outlets, ahead of feeders, or before bagging stations.

How much maintenance does a lump breaker require?

Key maintenance tasks include periodic inspection of the rotating blades or shafts for wear, and monitoring the drive seals.