Harper International Corporation Tungsten Reduction Systems

This revolutionary system concept facilitates high production rate in a single installation with the lowest cost of production and the greatest flexibility to alter material grain size and morphology. It features a pusher-style system with single muffle, externally heated by natural gas or electric with maximum temperature 1100°C. Production rates are up to 100 kg/hr (at maximum bed depth and velocity). The double door tray and product entry and exit system reduces gas losses, and the design allows gas dew point control at multiple locations inside the high temperature section. It also offers a hydrogen recycling system rated for 650 m3/hr, -65°C dew point.