Milling

Machinery & equipment » Technological processes » Milling

Milling

Our offer includes various types of milling and classifying systems for numerous applications. To make sure that you receive the perfect solution we can supply the necessary technical solutions and carry out tests at producer labs. We can also offer complete classification systems in wet and dry applications.

 

Autogenous (AG) and semiautogenous (SAG) mills

These mills are used for milling product after preliminary or secondary crushing. The output of the mills can be ready for further technological processes or be ready for further milling in ball mills.

The introduction of transmissionless drives eliminated the size limits of AG and SAG mills. Experience resulting from previous applications has enabled offering mills with installed power exceeding 26,000 kW.

 

 

Rod mills

Rod mills are usually used in preliminary milling after final crushing. The output is a uniformly sized product ready for further milling in ball mills. Rod mills are sometimes used to produce coarse product with low content of fine fractions.

 

Ball mills

Ball mills have multiple applications, including single-stage milling into fine product, secondary milling and tertiary milling. They are also often used for final milling after AG or SAG mills. An important application of ball mills are milling plants for flue gas desulphurisation installations.

  

 

Pendulum mills

Pendulum mills are used for dry fine milling or soft or semi-hard materials such as barite, limestone, sulphur. It is possible to introduce hot gases in order to dry the product, as well as operate in neutral atmosphere if the product requires such.

 

Vibrating mills

Vibrating mills are a perfect solution for low-capacity milling and for mixing or dispersing of materials such as paint pigments. They can also be used for conditioning or materials in order to obtain specific shape or prepare its surface for further production processes. The material is milled in a fast, easy and economic way.

  

 

Vertical mills

By using vertical mills it is possible to significantly reduce power consumption compared with mills which utilise the falling principle. In vertical mills the power-consuming overloading has been reduced and the efficiency of milling has been improved by preliminary feed classification eliminating ready product. Vertical mills also help reduce abrasive wear of slurry pipes. Product particles gain round, polished shape which improves slurry flow and reduce pipe wear due to abrasion. Other advantages include: small footprint and ease of installation, also in existing milling plants which require higher productivity or smaller particles. Typical applications include: final milling of concentrates from beneficiations plants as well as feldspar, cement, limestone (also slacking).

 

 

Classifiers

Classifiers are used together with milling systems in closed circuits and their job is to separate coarse and fine fractions. Wet systems require the use of spiral classifiers or cyclones. Dry systems utilise static and dynamic air classifiers as well as cyclones and filters.

 

Mill linings

The quality of lining is of utmost importance for milling productivity and efficiency as well as the operating costs. We offer mill linings made of rubber, metals and composites for both types of milling – wet and dry.

 

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