Cold-Crucible Furnace (CCF) is based upon an induction-heated melting furnace, which consists of water-cooled copper segments with heating coil. Because of less contamination than the ceramic crucible, CCF is more utilized as melting furnace of high purity metal for target materials. On the other hand, for recycling of Titanium or for reducing the capacity of radioactive waste, a large scale CCF is required, which is driven by high-frequency inverter. A large scale CCF (600_??_) with bottom pouring processing structure is developed newly, and experimental work is successfully performed from a practical point of view.