| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aef3e052eab542d652423c0dac6faba9 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F5-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D3-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D5-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D5-00 |
| filingDate |
2019-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f1d97612d9c22168abd6962e824bede
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_484b1405fc05c806c1ba2614e8632725
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1de592b650e127e7400cb010ed5e2910
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84aebed9141ef7bfc2476256c3fd3b6b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c40dce1c6f5fe372dca3a6c553f97cbd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c065dd8f3e8f84dd51710f413fb27c11 |
| publicationDate |
2020-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-102019004576-A1 |
| titleOfInvention |
Process for the production of potassium sulfate from polymineral hard salts without polluting waste products and the need for salt dumps |
| abstract |
Manufacturing process for potassium sulfate and NaCl vacuum salt from polymineral crude salts with the following stages: 1. Grinding to <5 mm 2. Cold leaching of the chloride minerals using cold water 3. Crystallization of KCl and NaCl from the chloride extract solution by evaporation 4. Hot leaching of MgSO 4 from the sulfate minerals kieserite and langbeinite 5. Conversion of KCl and MgSO 4 to K 2 SO 4 6. Calcination of polyhaltite and extraction of K 2 SO 4 , MgSO 4 for K 2 SO 4 production 7. Production of CaSO 4 . 0.5H 2 O. The process does not require any salt heaps and no solution discharge if MgCl2 from the K 2 SO 4 process is recycled or used as backfill material. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102022201122-A1 |
| priorityDate |
2019-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |