发明名称 |
METHOD OF PREPARING BISMUTH NITRATE |
摘要 |
industrial inorganic synthesis. SUBSTANCE: bismuth-containing material is treated with acid. Hydrolytic purification of bismuth is carried out with alkali reagent solution at pH 0.5-1.4 and temperature 40-70 C. Bismuth hydrogen nitrate is converted into bismuth nitrate at equilibrium concentration of acid in solution 2.8 to 10.6 M and end temperature of process 15-25 C. EFFECT: essentially increased purity of solution, eliminated environmentally hazardous concentrated nitric acid evaporation stage, and threefold reduced power consumption. 2 tbl, 2 ex
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申请公布号 |
RU2158225(C1) |
申请公布日期 |
2000.10.27 |
申请号 |
RU19990120471 |
申请日期 |
1999.09.27 |
申请人 |
INSTITUT KHIMII TVERDOGO TELA I MEKHANOKHIMII SO RAN;ZAKRYTOE AKTSIONERNOE OBSHCHESTVO "REDMETFARM" |
发明人 |
JUKHIN JU.M.;DAMINOVA T.V.;AFONINA L.I.;DANILOVA L.E. |
分类号 |
C01G29/00;(IPC1-7):C01G29/00 |
主分类号 |
C01G29/00 |
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