| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f08a8c9d6f734b79714144e8d8b8b4ec |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P40-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P40-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P70-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0078
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B26-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-066 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B26-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C11-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C11-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 |
| filingDate |
2013-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2017-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9b216a41eeb453ade907c4d3f6bb133 |
| publicationDate |
2017-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9719209-B2 |
| titleOfInvention |
Method for leaching recovery-boiler ash |
| abstract |
A method to be used in conjunction with a single-stage or multi-stage process for leaching ash originating from the recovery boiler of a pulp mill, particularly when the ash contains a significant amount of carbonate, wherein calcium compounds, such as calcium oxide (CaO) or calcium hydroxide (Ca(OH) 2 ), are employed as additives in one or more leaching stages, a liquid fraction formed in the leaching process is utilized outside the main chemical recovery cycle, such as a substitute for purchased sodium hydroxide in the bleaching line of the pulp mill, and a solids fraction may be mixed with a black-liquor stream of the mill or subjected to further processing to separate calcium compounds for recycle. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3966165-A4 |
| priorityDate |
2012-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |