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
Preferably, 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 | US04260584 |
| Source dataset | uspto-grants-1981_04 |
| ORD ID | ord-ae46385d3c534b46a2fa9c61f4257d4e |
| Source note | uspto-grants-1981_04 |