... smelting refining, metal analysis. Suitable for precious metals such as gold, platinum, silver, copper, iron, stainless steel, aluminum and other ... characteristics of high-frequency melting machine:small metal melting capacity,melting time is short.Gold,silver,copper smelting in 2-6 minutes ... 5-10 minutessimple equipment installation and convenient operation. 15KW 380V Small Gold Melting Furnace