http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102002600-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e164bcc4bd54075650f89b687ea057ff |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B11-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-68 |
| filingDate | 2010-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_baf3a77e4b904b4179f01f4bf945fcde http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8129a96781e16342a760f90415e2445b |
| publicationDate | 2013-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102002600-B |
| titleOfInvention | Environmentally-friendly chlorine water gold-extracting process |
| abstract | The invention belongs to the field of wet metallurgy, and discloses an environmentally-friendly chlorine water gold-extracting process for leaching gold from chlorine water for gold-containing waste or waste residue and removing toxic substances produced in the gold-extracting process to purify air so as to fulfill the purpose of environmentally-friendly gold extraction. The process comprises thefollowing steps of: putting the gold-containing waste or waste residue into a leaching tank, quantitatively adding a leaching agent such as sodium hypochlorite or bleaching powder, quantitatively adding sulfuric acid, hydrochloric acid and industrial salt or calcium chloride, reacting the mixture for 1 hour with stirring, separating leaching liquor by vacuum filtration, and performing gold separation and precipitation on the leaching liquor by using a reducing agent such as zinc powder, aluminum powder or ferrous sulfate; and removing chlorine from the waste gas discharged from the leaching tank, a vacuum filter and a reduction tank through an alkali liquor absorption tower, and then delivering the waste gas to an adsorber filled with an arsenic removal catalyst to remove AsH3 so as to realize standard emission. The process has the characteristics that: the process for extracting noble metals from the waste or the waste residue has cheap and easily-obtained raw materials, high gold-extracting efficiency and remarkable economic benefit; the reaction speed is high, the devices are small, and the discharged chlorine is recycled for reuse so as to save the leaching agent and reduce the cost; and the system is closed for treating the toxic substances, so the operating environment is good, and the environmentally-friendly gold-extracting process is realized and has prospect. |
| priorityDate | 2010-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.