A collage of thyssenkrupp Mining Technologies grinding equipment

thyssenkrupp grinding equipment

Grinding equipment is widely used in the minerals & mining industry throughout the world for the comminution of materials such as iron ore, copper ore, diamond ore as well as coal, limestone and other raw materials.

thyssenkrupp Mining Technologies offers the right grinding equipment for every job! Our product range is the result of decades of expertise and cutting-edge technology – tailored to your demands and sustainable operations.

What is grinding and how does it work?

The process of grinding reduces a specific material or ore to smaller or finer particles. In the past this is mainly achieved by using SAG and ball mills.

These mills usually consist of rotating cylinders with conical or flat ends. In order to reduce the size of the material a grinding media is used as which for example balls, pebbles or rods can be used. Since the implementation of the HPGR, the variety of flowsheets increased. For hard rock the HPGR took over the role of the SAG mill in combination with the ball mill.

Furthermore, with the introduction of its own vertical-helix stirred media mill velix®, thyssenkrupp Mining Technologies can now deliver the full line of grinding equipment even for the (ultra) fine grinding stage. The grinding process works through the application of mechanical forces that break up the structure of the material.

Application fields for grinding equipment

Grinding equipment is typically in operation in these industries:

Ball mills in a copper ore plant
  • Mining and mineral processing
  • Building material industry, for example cement or concrete
  • Power plant industry
  • Coal industry
  • Ceramic industry
  • Metal/Plastics

Grinding plays a key role in mining and mineral processing industry, where it is used following the initial size reduction through of crushing and aims to further reduce the material to finer particles.

The wide range of different mills from thyssenkrupp Mining Technologies is perfectly suited for these industries an offers the right grinding solution for every application.

Wet grinding & dry grinding

While the overall aim is to reduce particles to a desired size, the grinding process can in general be conducted in two different ways – dry or wet.

In the mining industry, dry grinding plants are primarily used when the downstream preparation process requires dry material, or in order to save valuable water resources. Grinding equipment from thyssenkrupp Mining Technologies is successfully in operation all around the world, grinding and drying gold ore, iron ore, iron ore concentrate, limestone, cement clinker, lime and coal as well as other mineral raw materials throughput capacities.

Wet grinding in contrast involves the use of liquids/water to process the material. The feed material is dispersed in the liquid. The resulting slurry is then circulated in the mill where it is ground with ?? solid grinding media. Wet grinding is commonly used when the target size of the material is very small. However, wet grinding is one of the most energy-intensive production stages and therefore has a substantial energy-saving potential which is realized by our thyssenkrupp Mining Technologies mills.

A ball mill

thyssenkrupp mills & grinding portfolio

thyssenkrupp Mining Technologies grinding equipment is built on the best technology in the market and decades-long experience. They are particularly distinguished by their high grinding efficiency and ease of maintenance which makes them a sustainable solution for your operations.

Our grinding solutions bring you added value by optimized design and operations which allow for more throughput, longer life-time as well as lower energy consumption.

thyssenkrupp Mining Technologies grinding equipment

We offer you the best and most innovative mills in the market.

High Pressure Grinding Roll (HPGR)

HPGR

The HPGR is the machine of choice when it comes to ore processing and the grinding of hard materials. It consists of two counter-rotating grinding rolls that generate such levels of high pressure that the fed material is grinded into smaller sizes.

Our HPGR is available in a classic and Pro version. The HPGR Pro has decisively improved mechanical features and new digitalized functions that make your grinding operations even more efficient. In comparison to other versions you benefit from 20 % more throughput, up to 15 % lower energy consumption and up to 30 % longer-lasting rolls.

Click here to learn more about our HPGR Pro!

Tube mills

Tube mills have rotating cylinders with flat ends. Their working principle is defined by impact and attrition. The mill gets filled with raw materials and the balls to grind them and then rotates along a horizontal axis.

It is the machine of choice when it comes to the processing of soft and medium hard ore as well as sticky material.

In terms of tube mills we offer autogenous and semi-autogenous mills as well as ball mills. Our autogenous and semi autogenous mills are suited for larger particle sizes and the coarse grinding of various ores such as gold, copper and iron ore. Ball mills in contrast have a smaller feed size and crushing ratio but are able to be operated in both wet and dry grinding.

Click here to learn more about our tube mills!

Ball mills in a copper ore plant

velix® vertical-helix stirred media mill

3D rendering of velix mill

The velix® is an efficient solution for customers with special product fineness requirements. For example, it is designed for the reduction of already fine particles into ultra-fines. It is also suitable in secondary grinding, tertiary grinding, or the regrinding in ore processing.

Within the velix®, the feed material is ground between numerous small grinding balls. These balls are kept in motion by rotation of the screw. The feed material is pumped into the lower part of the mill and exits the mill through the overflow. Therefore, the material is forced to pass through the entire grinding chamber, which maximizes the grinding efficiency.

Our velix® vertical-helix stirred media mill especially convinces with its energy efficiency since it uses up to 50% less energy consumption than ball mills and has the potential to save thousands of cubic meters of process water per day.

Click here to learn more about our thyssenkrupp velix®!

How to select the right grinding equipment?

A selection of grinding equipment

Selecting the best equipment for your operations can be quite a challenge as many parameters must be considered in order to find the right solution for an application.

In the decision several key questions should be answered:

  • What kind of material is going to be grinded?
  • What are the dimension of the material that is fed into the mill?
  • What properties should the end product have?
  • What capacities do I need?

We are there for you and our thyssenkrupp grinding experts will help you to find the best equipment for your specifications.

With our rich expertise and numerous references, we are able to analyze your demands and help you in making the right grinding equipment decision.

So, do not hesitate to contact us with any questions!

Jürgen Remmers
Jürgen Remmers

Head of PL Grinding Technology

Phone: +49 2525 99 2492

Send an email

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