| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70c6f183a6738cd37b1ad7a34081a91b |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-91
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-46 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B11-26 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B18-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-46 |
| filingDate |
2002-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_30761af61c916b2f9857ef22ef6b3a90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a2a5cca2ea02d0632889210c9a68789
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ada32b7829ab8cf6f4cb97a6d05095c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd48186c1afff74e3e17803574e47b82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f93c80990bf775e2db1df2e314291cd6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8542030d41f9e1523075dc7d0d92b25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_390d160c9efbd52204eb8a28bc0b19ee |
| publicationDate |
2004-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20040023436-A |
| titleOfInvention |
Manufacture Method of β-Hemihydrate Using Stainless Steel Refining Sludge and Waste Sulfuric Acid |
| abstract |
The present invention is a method for producing a semi-hydrated gypsum using a sludge and waste sulfuric acid to prepare β-type hemihydrate gypsum using the sludge discharged from the stainless refining process containing a large amount of calcium oxide and the waste sulfuric acid discharged from the plating process It is about.n n n In particular, the sludge discharged from the stainless refining process is subjected to a pretreatment process such as wet grinding, gravity screening and magnetic screening, and then hydrated to produce a calcium hydroxide suspension.n n n Then, iron ions are removed from the spent sulfuric acid, mixed with a calcium hydroxide suspension, and reacted by a normal temperature and normal pressure method to prepare β-type hemihydrate gypsum.n n n Accordingly, waste resources that are wasted by producing β-type hemihydrate gypsum using sludge and waste sulfuric acid in the stainless refining process are recycled. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20150076314-A |
| priorityDate |
2002-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |