| 摘要 |
PROBLEM TO BE SOLVED: To provide an impact type crusher controlling the generation of fine powder and suitable for producing a phenol resin molding material and the like. SOLUTION: This crusher is constituted of a crushing chamber 2 and an opening and closing door 11 with a raw material introduction opening 1, and a rotating table 5 with plurality of projected square pillar-shaped protrusions are provided in the crushing chamber, and a plurality of projected square pillarlike protrusions 4 are disposed in the concentric circle radiate shape on the rotating table, and the height of protrusions 44 disposed on the outermost peripheral line is set to be 1/2-2/3 of the height of the square pillarlike protrusions 4 disposed on other peripheral lines, and a fixed table 6 without protrusions is provided on the inner side of an opening and closing door 11. Also the number of protrusions on the outermost peripheral line is set to be half or less of the number of protrusions on the peripheral line which is on the line inner side of the outermost line. |
