The Wirtgen Group's Mineral Technologies division offers a well-matched range of products for mining and processing useful minerals with the Wirtgen Surface Miners and Kleemann crushing and screening machines.

Extracting minerals in opencast deposits and processing mineral raw materials places great demands on man and machine. Durable, high-performance equipment is an absolute necessity. Thanks to its many years of experience in the field of mineral technologies, the Wirtgen Group has innovative and practical technologies which are adapted for the most extreme conditions of use imaginable. The robust machines offer great reliability and cost-effectiveness for everything from material extraction to material processing.

Wirtgen surface miners

The established mechanical mining procedure is accomplished without conventional drilling, blasting and pre-crushing. Wirtgen uses its high-performance cutting technology here. The surface miners function much like cold milling machines, cutting and crushing the rock with a special cutting roller. Sturdy conveyor systems load it onto dumpers or deposit it beside the surface miner. Alternatively, the rock can also be placed between the chassis behind the machine. The Wirtgen Surface Miners have cutting widths of 2.20 m to 4.20 m and cutting depths of 20 cm to 83 cm up to a uniaxial compressive strength of 120 MPa. Special machines for rock construction can even cut hard granite up to 260 MPa. Moreover, Wirtgen is the only manufacturer that covers a performance spectrum from 100 t/h to 3,000 t/h.

The product range

With the 2200 SM, 2500 SM and 4200 SM, Wirtgen offers three proven and tested performance classes which can be variably configured specifically for each project. All of the machines can be configured for loading the material into dump trucks or depositing it as a windrow behind the machine. More than two dozen cutting roller designs are available as standard, while additional configurations are developed and built for the specific task at hand.

The surface miners' fields of application include opencast mining and routing work on roads, railway lines and tunnels. They enable the selective extraction of valuable minerals, coal, limestone, gypsum, bauxite, phosphate and iron ore with great purity.

Kleemann crushing and screening machines

The Wirtgen Group also offers a wide range of jaw, impact and cone crushers and as well as screening machines for processing mineral raw materials. Kleemann has been in the business of processing natural stone for more than 150 years. Pieces of rock obtained from drilling and blasting work in quarries are processed to defined grain sizes. These classified final granulations are used as standardised additives for concrete and for asphalt base, binder and surface courses in road construction as well as civil engineering.

Single machine or interlinked machine combinations

Jaw crushers serve as classic primary crushers in natural stone. The mobile machines' performance spectrum ranges from 100 to 1,500 t/h. Extremely robust, high-performance machines with feed capacities from 450 t/h to up to 1,000 t/h are used for traditional quarry applications.

Secondary crusher units such as track-driven impact and cone crushers are electrically interlocked to work in tandem with primary crushers and screens. The screen area of the chain-driven screening machines ranges from 7 to 18.4 sq m. Their performance spectrum runs all the way up to 1,000 t/h, making them well-suited for demanding tasks and material which is difficult to screen. Stationary machines with capacities from 100 to 1,000 t/h handle all of the individual processes in addition to crushing and screening, such as washing, sand processing, mixing, dust collecting, etc., thus rounding off the range of offers.

Two brands - one solution The Wirtgen Group offers state-of-the-art, extremely robust special machines in the field of mineral technologies with the Wirtgen Surface Miners and Kleemann crushing and screening machines. Thanks to the broad product range and decades of practical experience in application technology, customers receive tailor-made solutions from a single source - worldwide.