http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112609085-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B30-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B30-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0069 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0089 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0071 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B13-045 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B30-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B30-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-08 |
| filingDate | 2020-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112609085-B |
| titleOfInvention | Comprehensive recovery process for arsenic, copper and bismuth in copper-bismuth slag |
| abstract | The invention relates to a comprehensive recovery process of arsenic, copper and bismuth in copper-bismuth slag, which takes copper-bismuth slag generated by sulfuration step-by-step precipitation of acidic waste liquid containing copper and bismuth generated by acid preparation of copper smelting flue gas as a research object, carries out oxygen pressure leaching on the copper-bismuth slag in a sulfuric acid system, then adds the copper-bismuth slag into leaching slurry, replaces arsenic sulfide in the copper-bismuth slag by copper sulfate in the slurry, reduces pentavalent arsenic into trivalent arsenic by the copper-bismuth slag, and filters to obtain trivalent arsenic solution and slag phase; the white arsenic product can be obtained after evaporation concentration and cooling crystallization of the trivalent arsenic solution. Adding sodium chlorate and hydrochloric acid into the residue phase under normal pressure to leach copper and bismuth, adding dilute alkali solution into the leachate to perform hydrolysis reaction to generate bismuth oxychloride, performing solid-liquid separation, and adding solid alkali into the filtrate to make the solution neutral to recover copper. The leached slag is returned to a lead smelting system to recycle lead, and the hydrolysate is returned to the leaching process of copper and bismuth. The method has the advantages of short process flow, economy, applicability, no pollution and lower energy consumption, and realizes the high-efficiency separation and comprehensive recovery of arsenic, copper and bismuth. |
| priorityDate | 2020-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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