SOLID FUEL COMBUSTION FOR INDUSTRIAL MELTING WITH A SLAGGING COMBUSTOR

摘要

A method for supplying heat to a melting furnace is provided to cause no deformity and deterioration of the refractory material of scull by ash and to supply the heat to the melting furnace using ash contained fuel. A first fuel(20) having an ash component and a combustible component are introduced to a slagging chamber(12). A first oxidizing agent mixture(22) having an oxygen content of 10 volume % - 100 volume % is introduced to the slagging chamber. The second fuel(30) is selectively introduced to the slagging chamber. The second oxidizing agent mixture(32) having an oxygen content of 22 volume % - 100 volume % is introduced to the slagging chamber. The separated ash component is formed and the gas emission(40) to the slagging combustion(14) is formed by burning at least one of the combustible component of the first fuel and at least one of the selective second fuel. One of the separated ash component as a layer of the melting slag(42) is collected. One the gas emission to the slagging combustion is moved from the slagging chamber to a melting furnace(10) of a temperature 1000°C - 2500°C and a heat for forming the melt product is supplied. The melting slag is drawn out from the slagging chamber.