http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110255623-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B09B3-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-009 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B09B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-00 |
| filingDate | 2019-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110255623-B |
| titleOfInvention | Iron and arsenic separation method, separation device and application thereof |
| abstract | A method for separating iron and arsenic comprises the following steps: step 1, adding excessive oxidant into acidic treatment solution containing iron and arsenic to perform oxidation reaction, and oxidizing ferrous ions in the acidic treatment solution containing iron and arsenic into ferric ions to obtain oxidation treatment solution; step 2, adding ammonium salt into the oxidation treatment liquid, adjusting the pH value to be 2.0-4.5, and carrying out precipitation reaction to enable ferric ions to form ammonium jarosite; and 3, after the precipitation reaction is finished, adjusting the pH value of the reaction solution to be below 2.0, carrying out acid washing on the precipitate to release arsenic adsorbed in the precipitate, and respectively obtaining an ammonium jarosite solid and an arsenic-rich filtrate through solid-liquid separation to finish iron and arsenic separation. The method effectively separates iron and arsenic in the acidic treatment solution containing iron and arsenic at normal pressure, converts iron ions into ammoniojarosite for resource utilization, and carries out arsenic precipitation reaction on arsenic, thereby realizing harmless treatment of the sulfuric acid cinder leaching solution, being clean and environment-friendly, and not generating toxic and harmful gases. |
| priorityDate | 2019-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 95.