FIELD: 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
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING BISMUTH-POTASSIUM-AMMONIUM CITRATE | 2013 |
|
RU2530897C1 |
| METHOD OF BISMUTH-POTASSIUM-AMMONIUM CITRATE PRODUCING | 2001 |
|
RU2189942C1 |
| METHOD FOR PRODUCING BASE BISMUTH SUCCINATE | 2020 |
|
RU2740292C1 |
| METHOD OF PROCESSING BISMUTH METAL TO OBTAIN BASIC BISMUTH CARBONATE | 2023 |
|
RU2817099C1 |
| PROCESS OF BISMUTH SUBGALATE PRODUCTION | 2001 |
|
RU2193013C2 |
| METHOD FOR PROCESSING BISMUTH METAL TO OBTAIN BASIC BISMUTH OXALATE | 2022 |
|
RU2781920C1 |
| METHOD FOR PRODUCING METALLIC BISMUTH WITH THE PRODUCTION OF BASIC BISMUTH NITRATE | 2021 |
|
RU2774508C1 |
| METHOD OF OBTAINING GALLIC ACID BISMUTH BASIC | 2007 |
|
RU2339578C1 |
| TIN- AND ANTIMONY-CONTAINING OXIDES' PRODUCTION PROCESS | 2002 |
|
RU2201397C1 |
| METHOD FOR PREPARATION OF BASIC BISMUTH GALLATE | 2008 |
|
RU2367606C1 |
