http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103771537-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B17-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-06 |
| filingDate | 2014-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103771537-B |
| titleOfInvention | Ferrous sulfate heptahydrate is utilized to prepare four water ferrous chlorides, iron oxide red and the hydrochloric acid cyclic method of sulphuric acid |
| abstract | The invention belongs to titanium dioxide industry, hydrometallurgy industry and field of inorganic chemical engineering, utilize the ferrous sulfate heptahydrate of titanium powder industry by-product to the technique preparing ferrous chloride, iron oxide red and sulphuric acid particularly to a kind of.The present invention utilizes common-ion effect crystallization preparation four water ferrous chlorides initially with the ferrous sulfate heptahydrate of by-product in Producing Titanium Dioxide in concentrated hydrochloric acid, is then calcined preparation iron oxide red.Filtrate is after evaporation separates residue hydrochloric acid, and cold filtration separates residue ferrous sulfate heptahydrate thus reclaims sulphuric acid.The HCl that calcining and evaporation produce can be recycled.What the method for the present invention can clean is prepared as ferrous chloride, ferrum iron oxide red and the sulphuric acid of concentration about 60% by seven water sulphuric acid Asias.The present invention had both alleviated environmental pollution, can reduce again the production cost of titanium dioxide. |
| priorityDate | 2014-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.