DUST SAMPLING APPARATUS AND DUST SORTING RECOVERY APPARATUS

PROBLEM TO BE SOLVED: To provide a dust sampling apparatus and a dust sorting recovery system suitably used when dust generated from an electric furnace or a blast furnace is recovered while sorted at every dust groups approximate in constitutional components. SOLUTION: A dust sampling apparatus is equipped with a sampling pipe 2 connected to the intermediate part of a dust discharge pipe branched into two or more pipes at its rear end part and connected to a furnace at its front end part, respective sampling dust collecting means 3A, 3B connected to the rear end part of the branched pipes 2 and changeover means D1, D2 successively performing selection setting only one collecting means 3A selected from those collecting means to the communication state with a dust discharge pipe 1 and setting the remaining collecting means 3B and the dust discharge pipe 1 to a cut-off state. A dust sorting recovery system in constituted by adding a dust sorting recovery apparatus having a dust recovery pipe, respective dust sorting recovery means and a selection means to the dust sampling apparatus.