Traditionally, open-pit coal mining involves stripping overburden, blasting, and using excavating equipment to extract raw coal, which is then transported out by haul trucks. Given the high fuel costs and substantial greenhouse gas emissions, this approach places increasingly stringent demands on mining operations. By installing and relocating a semi-mobile crushing station directly at the extraction site, large pieces of raw coal can be rapidly crushed, meeting basic production needs and enabling efficient belt‑conveyor transport. This allows for low‑cost, environmentally friendly conveyance of coal to downstream facilities, supporting more stable, efficient, and eco‑friendly mining practices that help meet growing energy demands.

BDMME semi-mobile crushing stations have a rated capacity of 3,000–10,000 tons per hour and can be custom‑designed to meet diverse customer requirements. The equipment features a modular design, with modules connected by high‑strength bolts. Key modules include: a hopper module for receiving and conveying raw coal from mining trucks; a crushing module for reducing oversized raw coal into manageable sizes; a discharge belt conveyor module that swiftly transports the crushed material to downstream conveying systems; a truck‑unloading module comprising an unloading shed and platform; a dust‑control module to enhance working conditions and comply with environmental standards; an electrical module integrating a packaged substation and control room; and a steel retaining wall module constructed with a steel frame. Each module can be transported via oversized flatbed or tracked vehicles and relocated and reinstalled on a regular basis, significantly reducing construction costs and shortening relocation timelines.

The hopper module typically comprises a coal bunker for receiving and withstanding the impact of raw coal, a steel structure supporting the bunker, a heavy-duty apron feeder that conveys the raw coal to the crusher, and a pulverized‑coal collection system, among other components.

         The crushing module typically comprises a double‑tooth roll screening crusher for primary crushing of raw coal, a hopper for receiving material from the crusher, a discharge chute, a steel structure supporting the crusher, and lifting equipment to facilitate maintenance and inspection of the crusher. 

The discharge belt conveyor module typically includes: a head station that provides power, a hydraulic tail station that tensions the belt, a buffer idler bed to absorb the impact of crushed material, a sealed chute to contain dust emissions, intermediate support frames with idlers to support the belt, as well as metal detectors and electromagnetic iron removers for material inspection and protection. 

The unloading module typically comprises: a unloading platform and wheel chocks to facilitate unloading, as well as an unloading shed that serves to suppress dust (equipped with interfaces for negative-pressure dust collection or dry‑mist dust suppression). 

Steel retaining wall modules typically include in‑yard steel retaining walls and straight‑line steel retaining walls, serving as a replacement for conventional concrete walls and facilitating easy relocation in the future.

The electrical module typically comprises a packaged substation and a control room, enabling the control of the crushing station and unattended operation.