A method for recycling a scrap material includes providing a sample having one or more components having a respective melting temperature, and heating the sample to a first melting point corresponding to a first component to form a molten first component, and separating the molten first component from the sample. A system for recycling scrap materials includes a housing component for a sample containing one or more components to be heated, and subsequently melted and separated. The system may include a microwave plasma source, and at least one collection mechanism corresponding to each separated molten component.

Provided is a titanium cast product made of commercially pure titanium, the titanium cast product being produced by electron-beam remelting or plasma arc melting, comprising: a melted and resolidified layer in a range of 1 mm or more in depth at a surface serving as a surface to be rolled, the melted and resolidified layer being obtained by adding one or more kinds of β stabilizer elements to the surface and melting and resolidifying the surface. An average value of β stabilizer element(s) concentration in a range of within 1 mm in depth is higher than β stabilizer element(s) concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %. As the material containing the β stabilizer element, powder, a chip, wire, or foil is used. As means for melting a surface layer, electron-beam heating and plasma arc heating are used.

The invention is a microwave gun and arc plasma torch furnace used to refine titanium, Ti, from titanium dioxide, TiO.sub.2, powder. The furnace includes high frequency microwave emitters that create a high temperature zone strongly vibrating the titanium dioxide powder, TiO.sub.2, and lengthening and weakening the valence bonds in the titanium dioxide powder, TiO.sub.2, titanium, Ti, and oxygen, O, atoms. The furnace also uses nitrogen arc plasma torch generators to generate a N.sup.+ plasma to completely disassociate the titanium, Ti, and oxygen, O, atoms into titanium ions, Ti.sup.+ and oxygen ions, O.sup., and permitting the formation of nitrogen dioxide, NO.sub.2, and melted titanium, Ti.

Provided is a titanium cast product made of commercially pure titanium, the titanium cast product being produced by electron-beam remelting or plasma arc melting, comprising: a melted and resolidified layer in a range of 1 mm or more in depth at a surface serving as a surface to be rolled, the melted and resolidified layer being obtained by adding one or more kinds of stabilizer elements to the surface and melting and resolidifying the surface. An average value of stabilizer element(s) concentration in a range of within 1 mm in depth is higher than stabilizer element(s) concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %. As the material containing the stabilizer element, powder, a chip, wire, or foil is used. As means for melting a surface layer, electron-beam heating and plasma arc heating are used.

A method for recycling a scrap material includes providing a sample having one or more components having a respective melting temperature, and heating the sample to a first melting point corresponding to a first component to form a molten first component, and separating the molten first component from the sample. A system for recycling scrap materials includes a housing component for a sample containing one or more components to be heated, and subsequently melted and separated. The system may include a microwave plasma source, and at least one collection mechanism corresponding to each separated molten component.