http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111675222-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-037 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-037 |
| filingDate | 2020-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111675222-B |
| titleOfInvention | A kind of method that utilizes low-grade silica to produce industrial silicon |
| abstract | The invention relates to a method for producing industrial silicon by utilizing low-grade silica, and belongs to the technical field of industrial silicon smelting. In the present invention, low-grade silica and carbonaceous reducing agent are added into a submerged arc furnace for smelting to obtain a low-quality industrial silicon melt; the low-quality industrial silicon melt is continuously and uniformly added to a directional solidification continuous casting device to control the silicon melt The temperature, flow rate, and solidification speed are used to realize the segregation and enrichment of impurity elements, and obtain silicon ingot products with stepped distribution of impurity element content. Obtain various levels of industrial silicon products with different mass contents of impurity elements, wherein the impurity elements include many kinds of Fe, Al, Ca, Cu, V, Ti, Ni, Mn, and industrial silicon products include chemical grade industrial silicon, metallurgical grade industrial silicon and ferrosilicon. The invention greatly reduces the dependence of high-quality industrial silicon products on the quality of raw materials. |
| priorityDate | 2020-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.