HAARSLEV rendering and processing machinery

Industrial rendering equipment HAARSLEV (Denmark): continuous cookers, Disc Dryers, fat screw presses, Pre-breaker crushers, falling film evaporators, and ECO lamella pumps.

HAARSLEV: industrial rendering and by-product processing

Danish engineering enterprise Haarslev Industries has developed specialized processing machinery for rendering, poultry by-products, and fish meal production for over four decades. Haarslev integrated facilities operate worldwide, transforming organic offal into high-grade proteins and oils.

Over four decades of Danish machinery manufacturing expertise in rendering lines
Advanced design engineering centers and heavy production plants across continents
Engineered configurations for red meat, poultry processing, and fishery vessels
Technical identification of replacement wear parts from machine nameplate data

Continuous cookers and horizontal pressure hydrolyzers

Haarslev continuous cookers utilize a steam-heated rotating tube rotor within a rigid U-shaped shell to deliver high evaporation performance and uniform heating. Horizontal pressure hydrolyzers continuously process feathers and hog hair under steam pressure up to 6 bar.

Steam-heated rotating tube shaft providing large heating surface area for thermal duty
Automated level instrumentation maintaining uniform retention time during cooking
Continuous pressure hydrolysis of poultry feathers and hog hair up to 6 bar steam
Full-length vapor dome with integral cyclone separator preventing fine carryover

Disc Dryer units and rotary dewatering machinery

Haarslev Disc Dryers incorporate multiple steam-heated discs welded onto a heavy central rotor, maximizing heat exchange area within a compact machine envelope. Specially engineered TST dryers handle viscous municipal sewage sludges, hydrolysates, and industrial slurries.

Double-walled steam-heated discs providing generous indirect thermal exchange area
Adjustable scraper bars between discs preventing sticky meal accumulation on rotor
Variable-speed discharge screw mechanism for precise adjustment of product dryness
Heavy-duty TST variant engineered for handling viscous sludges and dense cakes

Mechanical fat screw presses and twin screw presses

Haarslev FSP3500 fat screw presses deliver throughput up to 4500 kg/h while reducing cake residual fat down to 9–14%. For cooked whole fish and watery animal streams, robust twin screw presses provide deep mechanical dewatering under variable hydraulic choke regulation.

Refined screw flights and cage strainer bars delivering thorough oil separation
Hydraulic choke collar enabling real-time modulation of pressed cake residual oil
Twin-screw dewatering presses tailored for cooked pelagic fish and watery sludges
Hardfaced screw flight edges coated with tungsten carbide alloy for prolonged life

Pre-breaker heavy crushers and fine particle grinders

Slow-rotating Haarslev Pre-breaker crushers reduce whole animal bodies, dense bones, and offal down to nominal pieces over 30 mm, safeguarding downstream cookers. Heavy forged alloy breaker shafts absorb severe mechanical shock loads from foreign metallic debris.

Slow-speed heavy breaker shaft fitted with hard-faced renewable breaker teeth
Spherical roller bearing pillow blocks absorbing severe radial and thrust shocks
Rotational sensor instantly interrupting motor drive upon encountering heavy tramp iron
Fine crushers and hammer mills reducing dry rendered cake into uniform protein meal

Falling film evaporators and ECO lamella pump systems

Haarslev falling film evaporators concentrate dilute stick water up to 30% solids while cutting live steam requirements by up to 60%. Patented ECO Lamella Pumps transfer coarse, viscous animal and fish materials with particle chunks up to 135 mm over distances of 200 meters.

Multiple-effect evaporation reusing dryer exhaust vapors for superior energy economy
Patented low-friction pump rotor and lamella arrangement extending operating uptime
Direct-coupled drivetrain eliminating intermediate belts and enhancing mechanical efficiency
Air-cooled condensers with stainless steel tube bundles for waterless odor control

Danish machinery engineering standards and heritage of Haarslev

Danish engineering corporation Haarslev Industries A/S has maintained global prominence in the development and manufacturing of high-performance rendering and organic by-product recovery equipment for over forty years.

Based in Soendersoe, Denmark, the firm combines Scandinavian precision metalworking traditions with modern environmental safety protocols for rendering facilities worldwide.

The advanced Haarslev production plants feature multi-axis CNC machining centers, automated tungsten carbide hardfacing units, and high-pressure hydrostatic test bays.

Machine lines are engineered in accordance with ISO 9001:2015 quality standards, ISO 14001 environmental frameworks, European Pressure Equipment Directive PED 2014/68/EU, and ASME Boiler and Pressure Vessel Code requirements.

Continuous cooking vessels and pressurized feather hydrolyzers

Haarslev Continuous Cookers are engineered for non-stop thermal processing of crushed meat, bone fractions, raw fat, and poultry offal. The monolithic U-shaped housing and rotating tube shaft deliver high thermal heat transfer density and expansive exchange surface area.

The automated CORE system continuously monitors process temperatures, interior pressures, and vessel product fill levels.

Horizontal continuous hydrolyzers by Haarslev provide thorough pressure sterilization and non-stop hydrolysis of poultry feathers and hog hair under steam pressure up to 6 bar.

Deep breakdown of keratin opens disulfide protein bonds without degrading sensitive amino acids, creating a digestible protein meal component for premium animal feed rations and commercial aquaculture diets.

High-efficiency rotary Disc Dryer units for by-product dewatering

Haarslev Disc Dryers serve as an essential thermal dewatering stage for defatted cracklings, poultry feathers, fishery offal, and animal protein residues.

The rotating central rotor with securely welded double-wall discs delivers massive indirect heat transfer surface within an economical footprint, achieving rapid moisture evaporation while maintaining gentle thermal exposure on organic proteins.

Between adjacent rotor discs, adjustable wear-resistant scraper bars prevent sticky meal buildup and preserve optimal thermal conductivity across hot metal surfaces. A variable-speed discharge screw allows plant engineers to precisely calibrate final product moisture content.

The heavy-duty TST variant is specifically engineered to handle viscous municipal sludges and industrial cakes.

Heavy mechanical fat screw presses and twin screw dewatering units

To separate liquids from solids in cooked animal streams, Haarslev manufactures heavy mechanical screw presses. The FSP3500 press delivers throughput up to 4500 kg/h of dry cake with residual fat levels between 9% and 14%.

The engineered screw shaft with graduated flight pitches compresses incoming material smoothly, pressing out clear tallow through finely spaced cage strainer bars.

An automated hydraulic choke cone continuously modulates discharge density in response to fluctuations in raw material fat and moisture content.

For cooked fish and high-moisture proteins, Haarslev provides robust counter-rotating twin screw presses, while outer screw flight tips are coated with durable tungsten carbide alloys to resist abrasive wear over long operating cycles.

Pre-breaker heavy coarse crushers and fine meal milling systems

Primary Haarslev Pre-breaker crushers are built for coarse reduction of fallen stock, heavy bovine bones, and offal down to uniform pieces exceeding 30 mm. A slow-speed breaker shaft fitted with hard-faced alloy teeth cuts incoming material against stationary counter-anvils without severe vibration.

Rugged spherical roller bearings absorb extreme radial and thrust shock loads.

An integrated rotation sensor continuously monitors shaft dynamics and immediately interrupts the motor drive whenever uncrushable tramp metal enters the hopper, protecting internal components from damage.

For final milling of dried cracklings into homogeneous protein flour, Haarslev supplies Fine Crusher units and hammer mills with interchangeable sizing screens.

Falling film evaporators, lamella pumps and odor abatement systems

Haarslev falling film evaporators harness waste heat vapors emitted by disc dryers to concentrate dilute stick water and process broths up to 30% solids.

The multi-stage vacuum evaporation arrangement cuts live boiler steam consumption by up to 60%, allowing facilities to recover dissolved proteins into finished meal instead of losing them down effluent drains.

Patented ECO Lamella Pumps transfer coarse, highly viscous material containing chunks up to 135 mm over pumping distances up to 200 meters.

For total capture of volatile organic compounds and odors, Haarslev supplies stainless steel air-cooled condensers, wet chemical scrubbers, and regenerative thermal oxidizers that guarantee compliance with strict air emissions standards.

HAARSLEV and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of HAARSLEV and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.