HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sulfate Ion → Calcium Sulfate, Hemihydrate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sulfate Ion | HCID 1117 | — |
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | Calcium | HCID 5460341 | — |
| Reactant | Fluorapatite (Ca5F(PO4)3) | HCID 10207414 | — |
| Product | Calcium Sulfate, Hemihydrate | HCID 3033839 | — |
Reaction Steps
Sulfuric acid is added in amounts such that the sulfate content of the added acid and the sulfate content of the added rock is equivalent to about 90% to about 100% (more preferred 93-99.5%) of the stoichiometric amount of sulfate required to react with calcium added in the phosphate rock to form calcium sulfate hemihydrate.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04220630 |
| Source dataset | uspto-grants-1980_09 |
| ORD ID | ord-b78871df4f474f2d87a824bd1261030c |
| Source note | uspto-grants-1980_09 |