| 摘要 |
The concentration of sulphuric acid is 35-45 wt.% and the ferric oxide is finepowdered. The amount of ferric oxide is esp. around 110% of the stoichiometric quantity. They are reacted at esp. 105-110 deg.C 90-100 % of the sulphuric acid is concurred. Any remaining solid material is separated and the remelting solution contains ferric sulphate. It can be diluted with water to at the most 47 wt% esp. 40-45% wt.% as Fe2(SO4)3. |
