To provide a technology for inexpensively recovering gold, silver or rare metal from waste easily recovered on streets such as substrates or cell phones by easily using an ultra high-temperature region by a thermite melting method which uses waste materials as a heat source, eliminating the necessity of even small-and-medium-sized businesses to invest in large-scale facility by limiting noble metals or rare metals to be collected to a few profitable kinds.
An inclination angle of the entire hearth is from 15 to 35 degrees in a blast furnace of an inorganic substance waste disposal. In the blast furnace, the hearth has one or more grooves for recovering gold, silver, platinum or rare metal with heavier gravity from a pouring basin to a sprue on the inclined floor surface.
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TANAKA RYOHEI
MATSUNAGA MASAHIRO
TERABONDO:KK
TANAKA RYOHEI