| 摘要 |
PURPOSE:To produce glass beads free from sharp tips inexpensively, by grinding a heated and cooled glass material and selecting. CONSTITUTION:A glass material 3 such as glass bottle, etc., which is being transported on an endless conveyor 2 is heated at 200-250 deg.C by a burner 1, dropped on a storage part 4 and naturally or forcedly cooled. Then the material 3 is sent through a belt conveyor 5 or ROSTLE conveyor 6 to a crusher 7, ground, fed to a sieve 19 of selector and classified. |
