发明名称 |
Method for purifying diamond |
摘要 |
Diamond can be easily purified from a powdery mixture of diamond and graphite by heating the mixture together with ammonium nitrate and at least one metal oxide of lead monoxide, trilead tetroxide, magnesium oxide and zinc oxide, to oxidize the graphite powder, and removing the oxidized graphite.
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申请公布号 |
US4578260(A) |
申请公布日期 |
1986.03.25 |
申请号 |
US19850726886 |
申请日期 |
1985.04.24 |
申请人 |
NIPPON OIL AND FATS COMPANY LIMITED |
发明人 |
KUROYAMA, YUTAKA;ARAKI, MASATADA |
分类号 |
C01B31/06;(IPC1-7):C01B31/06 |
主分类号 |
C01B31/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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