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Underground Mining Equipment
Underground mining machinery for the extraction of coal and other bedded materials. With this experience, Joy offers the mining industry the most reliable and technologically advanced products available today.
For use in longwall and room & pillar mining operations, Joy manufactures longwall shearers, roof supports, face conveyors, stageloaders, continuous miners, batch haulage vehicles (shuttle cars and battery haulers), continuous haulage systems (continuous chain haulage and flexible conveyor train) and bolting products (mobile, onboard and portable). These product lines can help mining operations become the safest, most productive mines in the world while operating at the lowest cost per unit.
Underground mining equipment: coal mill or coal pulverizer
Coal powder can improve coal burning efficiency, increase power output and reduce harmful gas emission, etc. As a result, coal mill or coal pulverizer and coal powder processing technologies are increasingly important in electric power plants, steel plants, cement plants and any other industry using injection type coal furnaces.
In a coal fired power plants, coal mill or coal pulverizers are used to pulverize and dry the coal before it is blown into the boiler furnace of the coal power plant. The crushed coal is feed into a coal mill or coal pulverizer or coal pulverizer via a hopper, so the coal can be transported to the bottom of the coal mill or coal pulverizer or coal pulverizer, where the crushed coal can be grind into coal particles by the coal pulverizer. During the grinding process, hot air was flowed to the coal mill or coal pulverizer or coal pulverizer in order to dry the coal particles and lift the coal particles out of the coal mill or coal pulverizer or coal pulverizer and into the boiler furnace of the coal power plant. When the coal particles is too heavy, it will drop down into and be grinded again by the coal pulverizer.
Underground mining equipment: continuous miners
The continuous miner product line has been developed to meet the high productivity requirements of today's underground mining industry. Machine designs are available to satisfy the full spectrum of seam conditions for today's market.
The basic elements of each continuous miner are similar in design, following field proven philosophies perfected by Joy over the years. Each machine employs Joy’s multi-motor concept with outboard access to motors, gearcases, controllers and other major components. The philosophy calls for the isolation of major components for easier troubleshooting and maintenance. The continuous miners use individual motors with direct drive transmissions to power the cutter, traction, gathering and hydraulic systems. This permits service or repair quickly and easily, thus reducing downtime and maintenance costs.
The continuous miner product range is segmented by mining height requirements into three machine classes for low, medium and high-seam applications. Although the features vary for each machine in order to maximize productivity and reliability in a given seam, these features have in common basic design principals that put JOY machines on the leading edge of underground mining technology and produce the lowest cost per ton to the customer.