http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109292798-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D15-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D15-04 |
| filingDate | 2018-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109292798-B |
| titleOfInvention | Process for producing anhydrous lithium chloride by crystallization method |
| abstract | A process for producing anhydrous lithium chloride by a crystallization method is characterized by comprising the following steps: sequentially comprises the following steps: roasting, fine-turning, acidifying, mixing and squeezing lithium-containing minerals to obtain a lithium sulfate-containing leaching solution; adding calcium chloride for conversion, squeezing and filtering to obtain a squeezed filtrate; evaporating and concentrating the squeezed filtrate, cooling and filtering to obtain impurity-separated filter residue and impurity-separated filtrate; evaporating and concentrating the impurity-separated filtrate until solid is separated out, and performing heat preservation and centrifugal separation to obtain primary centrifugal mother liquor and primary centrifugal wet material; returning the primary centrifugal mother liquor to a cooling section; dissolving the primary centrifugal wet material, filtering, heating, evaporating and concentrating the filtrate until solid is separated out, and performing heat preservation and centrifugal separation to obtain secondary centrifugal mother liquor and a secondary centrifugal wet material; heating, evaporating and concentrating the secondary centrifugal mother liquor until solid is separated out, and drying the secondary centrifugal wet material to obtain the anhydrous lithium chloride product. The invention does not need to add barium chloride and carbonate in the whole process, has simple impurity removal process, low production cost and high purity of anhydrous lithium chloride. |
| priorityDate | 2018-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.