2, 3の湿潤圧粉体の圧潰強度におよぼす粒度の影響について

抄録

In this paper the author investigated the effect of specific surface, distribution modulus and size modulus of pulverized fines on the crushing strength of green compacts made from fines of pulverized silica sand, aiundum, lime stone and two kinds of calcites.
The results obtained are summerized as follows;
(1) In case of sized fines the relation between the crushing strength of green compacts and specific surface of fines measured by the air permeability method was expressed by a straight line.
(2) It was recognized that the crushing strength of green compacts made from fines contained the wide size distribution increased with increase of specific surface, but could not be evaluated by the specific surface alone, and in spite of the same specific surface, the crushing strength varied with changes of size distribution.
(3) It was recognized that decrease of distribution modulus and size modulus of pulverized fines which follow the G-S size distribution formula increased the crushing strength.
(4) It was recognized that the relation between the crushing strength and distribution modulus was shown by a hyperbolic line.
(5) It was recognized that the relation between the crushing strength and the reciprocal of size modulus was shown by a straight line.