Abstract
A new atmospheric scorodite synthesis process was investigated. A large size and good crystalline scorodite was precipitated at 95 °C even in a short time of 1 to 7 h when ferrous ions were oxidized by oxygen gas in the presence of As(V) ion with concentrations as high as 50 g/L As in sulfuric acid solution. The key point of the process is the ferrous state of iron in solution and the oxidation of ferrous ions during the scorodite precipitation. This scorodite has a particle size of 15 μm with approximately 10% moisture content (wet base) even under atmospheric conditions. The arsenic content was about 30% by mass. The results of the leach test are very desirable. The process can be applied to a primary smelter which produces copper, zinc, lead and other secondary materials.
Original language | English |
---|---|
Pages (from-to) | 92-102 |
Number of pages | 11 |
Journal | Hydrometallurgy |
Volume | 90 |
Issue number | 2-4 |
DOIs | |
Publication status | Published - 2008 Feb |
Keywords
- Arsenic(V)
- Crystalline precipitate
- Ferric arsenate
- Ferrous oxidation
- Oxygen
- Scorodite
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Metals and Alloys
- Materials Chemistry