| 摘要 |
PROBLEM TO BE SOLVED: To provide a burner and a manufacturing method using the same, without causing a back fire in operation, for manufacturing a spheronized particle having high sphericity on high melting point oxide such as alumina and zirconia. SOLUTION: This burner has a first mixing jetting hole 3 jetting fuel and an oxidant, a raw material powder jetting hole 4 jetting raw material powder and carrier gas, and a second mixing jetting hole 5 jetting the fuel and the oxidant, and is provided so that the first and second mixing jetting holes have a fuel supply passage, an oxidant supply passage and a mixing part 31 for mixing the fuel from the fuel supply passage with the oxidant from the oxidant supply passage, and the mixing part is formed as a jetting port of mixed gas of the fuel and oxygen in one opening end part, and a cylindrical injection plug 34 inserted with a clearance to an inner wall surface of the mixing part into the other opening end part, and an inside space of this injection plug is communicated with the fuel supply passage or an oxygen supply passage. A flow speed of gas jetted from the inside space of the injection plug is set faster than a flow speed of gas jetted from the clearance outside of the injection plug. COPYRIGHT: (C)2009,JPO&INPIT
|
