| 摘要 |
PURPOSE:To increase a loading amount of masses and thereby increase a working capacity by a method wherein a specified number of propulsion controlling weirs are provided within a barrel working tank in an annular oscillating type barrel working machine annexed with a selection device. CONSTITUTION:At least one piece of a propulsion controlling dam 7, consisting of an inclined ascending wall 7a and an inclined descending wall 7b is provided at a bottom of a barrel 3, thereby, masses are piled even before the weir 7 as shown by the Fig. denoted by numeral 21 and increase the amount of masses in the barrel between a hill type fixed weir 5 and the propulsion controlling weir 7 as wells as the barrel located at an upper stream of the weir 7 by a much amount corresponding to portions 23, 23a of the masses and make a level of the masses in the working barrel 3 higher as shown by numerals 21, 21a, 21b, while a fluidity condition of the masses is improved and a working capacity is increased. The increased amount corresponds to approx. 20% of a total amount of masses and a result which exceeds 20% in the working capacity is obtained. |
