http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003034535-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_273f589e222c78ae8afbfeb8f0247eb0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D12-00 |
| filingDate | 2001-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_814ee6fd61a489f6cbb3cd9c9f18185f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba34b8c5f04ccf92680ed160fc00f2d7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14014f96d431aeef21358c27f4d2a1ff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_624dda0b181634d57652d6f06d03ddb2 |
| publicationDate | 2003-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003034535-A |
| titleOfInvention | Method and apparatus for producing iron sulphate with low residual hydrochloric acid content from steel washing waste hydrochloric acid |
| abstract | (57) [PROBLEMS] To provide iron sulfate 1 having significantly reduced hydrochloric acid content from steel washing waste hydrochloric acid without solidification of iron sulfate monohydrate crystals. Water salt crystals are obtained. SOLUTION: From a slurry of a sulfuric acid-containing mother liquor obtained by adding sulfuric acid to steel washing waste hydrochloric acid and iron sulfate monohydrate, iron sulfate monohydrate is separated as a cake, and sulfuric acid having a concentration of 20 to 60% by weight is removed. By contacting, the residual hydrochloric acid in the cake is removed, and if necessary, a method of recycling the sulfuric acid-containing mother liquor and the washing waste sulfuric acid for waste hydrochloric acid treatment, and (i) a hydrochloric acid distillation and recovery device, (ii) A sulfuric acid concentration adjusting device for preparing sulfuric acid having a concentration of 20 to 60% by weight, (iii) iron sulfate 1 precipitated in (i) above. A crystal separation device for separating water salt as cake, (iv) a device for washing the cake with sulfuric acid having a concentration of 20 to 60% by weight, and, if necessary, a sulfuric acid-containing mother liquor separated by the crystal separation device and washed waste sulfuric acid. With a pipe for recycling the above to (i). |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104150667-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102153125-A |
| priorityDate | 2001-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.