FIELD: chemical industry; nonferrous metallurgy, particular, production of chemical reagents and metal powders. SUBSTANCE: natural gas and compressed air are supplied to the body of the gas ring torch. Gas mixture is ignited at the outlets of dissector holes and coming in contact with heated pipe surfaces. Ring gas envelope flowing around the pipe external surfaces produces fire protection. Fed to branch pipe are metal vapors at the rate exceeding the rate of propagation of burnt metal vapor flame. Natural gas and air are fed to torch body with the ratio of their volumetric flow rates indicated in invention description. In this case, the temperature of the pipe surface is higher than that of metal vapor burning. EFFECT: higher efficiency. 2 cl, 1 dwg, 1 tbl
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