| 摘要 |
PURPOSE:To prevent the generation of soot and flame failure, etc., by sucking air into a furnace through an air inflow hole provided near to a burner and thereby igniting and performing both feed of oxygen through the burner and closure of the air inflow hole after ignition. CONSTITUTION:After taking off a two-divided ring 9 and a two-divided cylinder 10 in such a state that a burner 4 is inserted and opening an air inflow gap 5, a blower sucking spherical particles discharged from a vertical furnace is started and air of prescribed amount is sucked through the air inflow gap 5. A burner for ignition is inserted through an inserting hole 13 of the burner for ignition and the burner 4 is ignited by allowing only LPG to flow through the burner 4. After allowing pure oxygen to flow through the burner 4 and forming stable flame and finishing ignition, the air inflow gap 5 is closed by the bi-sected ring 9 and a mineral powdery raw material is fed through the burner 4 and production of flame sprayed spherical particles is started.
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