| Method for integrated processing of ash from coal combustion involves removal of iron by magnetic separation, placing ash into a reaction zone, adding a sorbent to it, which provides absorption of rare elements | |
| 2024-04-08 | |
| 专利权人 | SUPERHARD & NEW CARBON MATERIALS INST (SUPE-Non-standard) |
| 申请日期 | 2024-04-08 |
| 专利号 | RU2835243-C1 |
| 成果简介 | NOVELTY - Invention relates to complex processing of ash from coal combustion to obtain concentrate of rare and rare-earth elements, aluminium sulphate for production of coagulant, high-silica raw material for production of refractory materials and cement. Method involves removal of iron by magnetic separation, placing ash into a reaction zone, adding a sorbent to it, which provides absorption of rare elements. Obtained mixture is leached with an aqueous solution of sulphuric acid with concentration of 269 g/l at temperature of 65-70°C for 3-5 hours. Then one performs heating and holding. Sorbent is directed to production of concentrate of rare elements. Insoluble residue is filtered, mixed with concentrated sulphuric acid and heated at temperature of 300-350°C for 60-80 minutes to obtain sinter. Obtained sinter is leached with an ash leaching solution to obtain aqueous aluminium sulphate, which is used to obtain a coagulant, and a solid residue containing quartz and mullite, which is used to produce refractory materials and cement. USE - Performing operations. ADVANTAGE - Complex processing of ash from coal combustion is ensured using readily available reagent – sulphuric acid. 3 cl, 5 tbl |
| IPC 分类号 | B09B-003/00 ; C01F-017/00 ; C01F-007/74 ; C22B-003/08 ; C22B-059/00 ; C22B-007/02 |
| 国家 | 俄罗斯 |
| 专业领域 | 材料科学 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/17315 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | SUPERHARD & NEW CARBON MATERIALS INST (SUPE-Non-standard) |
| 推荐引用方式 GB/T 7714 | TANUTROV I N,POTAPOV S O,SVIRIDOVA M N,et al. Method for integrated processing of ash from coal combustion involves removal of iron by magnetic separation, placing ash into a reaction zone, adding a sorbent to it, which provides absorption of rare elements. RU2835243-C1[P]. 2024. |
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