DUST COLLECTOR FOR MELTING FURNACE

PROBLEM TO BE SOLVED: To provide a dust collector for a melting furnace that can collect soot dust and fume etc. generated from molten metal while covering the surface of the molten metal with combustion prevention gas and that prevents efficiency of various works from being reduced.SOLUTION: A dust collector for a melting furnace includes: a furnace body 3 having an opening 3a on the upper side thereof; an annular combustion prevention gas supply pipe 6 connected to a combustion prevention gas supply device and installed along an edge of the opening 3a; and an annular dust collecting pipe 7 connected to the dust collector and installed along the combustion prevention gas supply pipe 6 at a position higher than that of the pipe 6. The combustion prevention gas supply pipe 6 includes a combustion prevention gas discharge port 6a for discharging the combustion prevention gas supplied from the combustion prevention gas supply device downwards or obliquely downwards over the perimeter, and the dust collecting pipe 7 includes a gas suction port 7a for sucking gas within the annular shape over the perimeter. 【課題】溶湯の表面を防燃ガスで覆いつつ、溶湯から発生する煤塵、ヒューム等を集塵することができ、しかも、各種の作業性を損なうことのない溶解炉用集塵装置を提供すること。【解決手段】開口部３ａを上部に有する炉本体３と、防燃ガス供給装置に接続され、開口部３ａの縁部に沿って設置された円環状の防燃ガス供給管６と、集塵装置に接続され、防燃ガス供給管６に沿って同管６より高い位置に設置された円環状の集塵管７と、を備える。防燃ガス供給管６は、防燃ガス供給装置から供給される防燃ガスを下方ないし斜め下方に向けて吐出する防燃ガス吐出口６ａを全周に亘って有し、集塵管７は、円環内のガスを吸入するガス吸入口７ａを全周に亘って有する。【選択図】図１