Latest news

29. July 2021

We stand together

Images of the devastating floods in the Eifel and Ahr valley region and news about the tragedy of so many people are going around the world. Our company, located in what was until recently known the picturesque Ahr valley region, has also been impaired. Even though our manufactory has not been flooded, most our employees […]

10. June 2021

KÖLLEMANN is world market leader in the area of preheaters

And once again, a Köllemann preheater with a throughput of 51 tph leaves our production and goes on its journey to the customer KÖLLEMANN preheaters are used to heat up petroleum coke. Petroleum coke is a residue formed as a by-product of petroleum refining and is made of almost pure carbon. KÖLLEMANN preheaters perform the […]

24. March 2021

Sad news

The mechanical engineering company Köllemann GmbH mourns the loss of its founder. The entrepreneur Anton J. Köllemann passed away on Monday, the 22 of March 2021. In deepest sorrow we say goodbye to our company founder, who passed away unexpectedly on March 22, 2021 at the age of 77. Mr. Köllemann laid the foundation of […]

27. November 2020

Food processor of a new dimension – cooking and roasting with screw heat exchanger

Köllemann has been associated with efficient solutions in the fields of conveyor, process and environmental technology for decades. Our success has been evolving due to our innovative mechanical engineering designing that perfects the principle of the screw flights.Our success is based on our ever innovating mechanical engineering designs, perfecting the worm shaft to a new […]

Köllemann products and services

Screw Conveyors

… for conveying powdery, granular and free-flowing bulk materials.

Mixing Screws

… for mixing powdery, granular and free-flowing bulk materials.

Rotary Valves

… to accurately dose, seal, feed, discharge and measure bulk products.

We are …

Medium sized:

Our team of over hundred highly qualified employees boasts of 50 years of experience in the area of process technology


We are a world market and technology leader in manufacturing and selling machines for conveying, heating, cooling and dosing of bulk materials and shutting off process rooms


Our competence is the development and manufacture of individual machines, precisely in tune with the needs of our customer and the field of application.
We are not offering serial products.


Our customers come from more than 80 countries from various fields of business, predominantly raw materials industry, chemical and cement industry, energy and power plant industry as well as the environmental and recycling sector.

Career with Köllemann

You are enthusiastic about technology and searching for self-responsibilty and a challenge in your job? In this case our company is waiting for you: we are manufacturing individual customer orientated machines. We will enable you to develop your skills with us and offer extensive freedom for you to contribute your ideas . On top: we believe our social benefits speak for themselves.