公开(公告)号：JPH02141414A

公开(公告)日：1990-05-30

申请号：JP29580288

申请日：1988-11-22

Applicant: AGENCY IND SCIENCE TECHN

Inventor： OINUMA SENZO ,  NAKAYAMA YOSHIO ,  MATSUNAGA TAKEHIRO ,  IIDA MITSUAKI ,  TANAKA KATSUMI ,  TADA KAZUMI

IPC: C01B31/06 ,  B01J3/08

Abstract: PURPOSE:To make it possible to easily repeat explosion by a desired number of repetitions and to facilitate the recovery of a reaction product by exploding a starting material mixture of an explosive with graphite in water. CONSTITUTION:A starting material mixture of an explosive with graphite is press-molded so as to attain >=1.4 g/cm density and the resulting molded body is charged into a pipe with one end or both ends open as required. The molded body or the pipe is suspended in water in a water tank at >=50cm depth of water. After explosion, the supernatant liq. is removed and the deposit is recovered. The metals in the deposit are dissolved and removed with nitric acid, the residual graphite is removed with a mixed soln. of hydrochloric acid and nitric acid and then the deposit is treated with a mixed soln. of hydrofluoric acid and nitric acid to obtain high purity diamond.