Raw material extraction in small and medium-sized mining operations
The 220 SM / 220 SMi is the prime choice not only for use in small and medium-scale mining operations but also for routing work and infrastructure projects.
The compact, multipurpose surface miner extracts primary resources with an unconfined compressive strength of up to 50 MPa selectively and at a cutting depth of up to 11.8 in (300 mm).
The 7 ft 3 in (2.2-m) wide cutting drum unit is tailored precisely to the specific application and guarantees high productivity at low operating costs.
Primary resources are extracted in a single, environmentally sustainable operation without drilling and blasting, yielding material of the purest quality.
Windrowing enables the mined material to be deposited behind the machine in a continuous process.
WIRTGEN’s leveling technology adjusts height, depth, and pitch for extremely accurate results. In the process, the system permanently compares the actual values to predefined target values and adjusts the deviations proportionally. This state-of-the-art machine technology consistently guarantees outstanding leveling results and significantly reduces the machine operator’s workload.
WIRTGEN offers customers reliable hardware and software developed in-house. In this context, a variety of systems are used depending on the construction project and local conditions at the job site.
High quality results are the goal of every construction project. This applies to road rehabilitation using cold milling machines and cold recyclers as well as to soil stabilization and the extraction of minerals with surface miners. In order to remove pavement with precision and efficiency, it is essential that the drum, pick holder, and pick work together perfectly.
WIRTGEN is the market leader in cutting technology and offers customers high-performance cutting systems whose components are designed to be fully compatible. In addition, WIRTGEN continuously makes advancements to these cutting technology components, incorporating its practical experience and feedback from customers into the process.
As the surface miner moves forward, a special cutting drum rotates against the direction of travel, cutting layers of material from the rock formations and crushing it in the process. The primary conveyor picks up the material in the drum housing and transports it towards the rear of the machine, where it is then accepted by the slewable and height-adjustable discharge conveyor. The discharge conveyor loads the material into trucks or dumpers or discharges it to the side of the miner. The discharge height can be adjusted to the height of the transport vehicles. The surface miner is driven via four steerable and height-adjustable track units. An automatic leveling system ensures precise adherence to the cutting depth, thus enabling even thin seams or layers to be mined selectively and with maximum accuracy.
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