HuagongsheHuagongshe Chemistry Print Report · For research reference only
Arsenic Sulfide → Sulfuric Acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Arsenic Sulfide | HCID 61569 | — |
| Reactant | Peroxymonosulfuric acid | HCID 2754594 | — |
| Reactant | Arsenic | HCID 5359596 | — |
| Catalyst | Gold | HCID 23985 | — |
| Solvent | Water | HCID 962 | — |
| Product | Hydrogen Peroxide | HCID 784 | 50% |
| Product | Sulfuric Acid | HCID 1118 | 92% |
| Product | Peroxymonosulfuric acid | HCID 2754594 | — |
Reaction Steps
In the process of the invention, the arsenic-containing gold ore is treated with Caro's acid, i.e. peroxymonosulphuric acid (H2SO5), to oxidize the arsenic sulfide in the ore to the water soluble arsenate form. Caro's acid is produced by reaction between 92 to 99% sulphuric acid and 50 to 75% aqueous hydrogen peroxide in a mole ratio of 1.5:1 to 3.5:1. The acid may be diluted with water for use in this invention, and usually has a concentration in the range of about 15 to about 30%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04537628 |
| Source dataset | uspto-grants-1985_08 |
| ORD ID | ord-2a9f6d28f9a844d0a72a9441af6bc2b0 |
| Source note | uspto-grants-1985_08 |