Hammer mills

PTH hammer mills

Fine crushing of the heaviest materials

PTH series hammer mills are designed for crushing and upgrading the heaviest materials.

They are often used to grind limestone, phosphates or gypsum, but are also suitable for other applications such as glass recycling.

up to 60 t/hthroughput

up to 300 kWdrive power

up to 100 mmfeed size, PTH 100

up to 0.1 mmfinal grain

PTH hammer mill by Prall-Tec on a foundation frame

Benefits at a glance

Convincing arguments

Preliminary stage for sorting

Crushing of various materials as a preliminary stage for subsequent sorting.

Low costs

Low maintenance and operating costs in everyday use.

Wide range of materials

A wide variety of materials can be processed.

Hydraulic opening

Foreign bodies can be removed via the hydraulic opening.

Robust construction

The housing of our hammer mills

PTH hammer mill with motor and V-belt drive

A sophisticated housing, armored wear zones and a flexible drive.

Welded construction with two hydraulically opening folding sections
Wear zones armored with Hardox plates or cast parts
Rotor discs made of wear-resistant material suitable for hammer mills
Drive via motor and mill V-belt pulley, in various power levels

With a range of options and extensions, we find the right machine for every feed material and desired end product.

Powerful – Compact – Efficient

The right machine for your requirements

Feed size, material, throughput and final grain size determine the right machine. We help you with selection and design – with over 25 years of experience with hammer mills.

PTH 49 and PTH 65

Model	PTH 49-38	PTH 65-25	PTH 65-50	PTH 65-75
Throughput per hour	3–4 t	4–6 t	6–8 t	9–10 t
Weight	1,000 kg	1,350 kg	1,600 kg	2,500 kg
Feed size	40 mm	70 mm	70 mm	70 mm
Power	11–30 kW	15–45 kW	18–55 kW	22–75 kW
Final grain	Flexible	Flexible	Flexible	Flexible

PTH 100 for large quantities

Do you need a large quantity of the finest end product and want to produce it cost-effectively? With rotor widths from 750 to 2,500 mm and drive motors up to 300 kW, the PTH 100 series is also designed for large tasks.

Model	PTH 100-75	PTH 100-125	PTH 100-200	PTH 100-250
Throughput per hour	15–18 t	22–25 t	30–35 t	55–60 t
Weight	5,700 kg	7,600 kg	13,600 kg	25,400 kg
Feed size	100 mm	100 mm	100 mm	100 mm
Power	30–160 kW	45–200 kW	55–250 kW	75–300 kW
Final grain	Flexible	Flexible	Flexible	Flexible

Impact mill meets hammer mill

For perfect comminution of a wide range of materials

PTRG by Prall-Tec: impact mill housing with hammer mill rotor

The PTRG combines an impact mill housing with a hammer mill rotor. It is particularly suitable for separating PVB film and glass.

For car windshields and safety glass
Flails, hammers, knives or cutters in the rotor
Wear parts made of chrome cast iron for cost-efficient production

The 2-rotor hammer mill

For maximum degree of crushing

The PTH 2 has two rotors that work together for a maximum degree of crushing.

This machine targets final grain sizes below 1 mm.

Model	Weight incl. foundation frame	Throughput	Drive power
PTH 2 490-190	1,100 kg	3 t/h	2x 7.5–22 kW
PTH 2 490-380	1,600 kg	6 t/h	2x 11–30 kW
PTH 2 650-250	2,300 kg	12 t/h	2x 15–45 kW
PTH 2 650-500	3,200 kg	12 t/h	2x 18.5–55 kW
PTH 2 650-750	4,380 kg	18 t/h	2x 22–75 kW
PTH 2 1000-750	9,500 kg	30 t/h	2x 30–160 kW
PTH 2 1000-1250	12,200 kg	45 t/h	2x 45–200 kW
PTH 2 1000-2000	24,000 kg	60 t/h	2x 55–250 kW

A hammer mill as a shredder

For a wide range of products and applications

Our hammer mills are the basis of the PTH SI shredder – used above all for the shredder light fraction and for processing electronic scrap.

Rotor can be fitted with a variety of hammers and flails
240° grate basket through which the material reaches the outlet
Size of the end product determined by grate baskets of different sizes

Model	PTH SI 120-100	PTH SI 120-250
Throughput per hour	20 t	Up to 60 t
Weight	9,850 kg	36,000 kg
Feed size	200 mm	300 mm
Inlet size	280 x 1,000 mm	350 x 2,500 mm
Power	132 kW	350 kW
Final grain	Depends on grate basket	Depends on grate basket

Primary crusher + hammer mill

A powerful combination

From over 1,000 mm to below 1 mm – in just two steps.

Impact crusher and hammer mill are often used together: the impact crusher alone cannot deliver the finest comminution, and the hammer mill is limited by the feed size of the material. The machine sizes depend mainly on feed size and throughput per hour.

Impact crusher and hammer mill as a combination

Applications of a hammer mill

The optimal solution for every application

If a final grain of 1 mm or smaller is required, a hammer mill is in many cases the most economical solution.

With many designs and operating principles, we find the right solution for every application. On request, we also integrate the hammer mill into existing plants to achieve higher throughput with more economical production.

Prall-Tec hammer mill in plant operation with discharge conveyor

Recovery of non-ferrous metals from IBA

The PTH hammer mill provides optimal preparation for recovering non-ferrous metals from waste incineration residues.

More about slags and IBA

Aluminum slag: separating aluminum and residual slag

The PTH separates aluminum slag with a feed size of 16–60 mm into aluminum and residual slag. More about metals

Feed material: aluminum slag 16-60 mm — Feed material: aluminum slag 16–60 mm

Aluminum slag before processing, in detail — Feed material in detail

Aluminum as the end product after the PTH — End product: aluminum

Aluminum fraction after the PTH hammer mill — Aluminum after the PTH

Individual solution to customer requirements

One-off impact and hammer mills

Do you have your own ideas for your machine, or is space limited when expanding your plant? Then we adapt existing technology to your specifications and install a machine that could not have been fitted in a standard design. This is how we create a variety of one-off impact and hammer mills year after year.