Method for Production of Monohydrate Magnesium Sulfate (II), Autoclave for its Production and Device for Discharging of Monohydrate Magnesium Sulfate (II) from Autoclave

摘要

1. Technical Result Increase in quality of final product, simplification of technological process. 2. Essence When producing monohydrate magnesium sulfate (II) precipitating of monohydrate magnesium sulfate (II) from the aqueous solution of magnesium sulfate in autoclave is effected by dry steam having high pressure 0,7-0,8 mPa under 0,5-0,6 mPa pressure and temperature 1600C, the filtration being effected by compressed air having pressure 0,6-0,7 mPa and temperature 100-1200C to obtain 0,1-0,5% humidity, in result of which the obtained salt is discharged from the autoclave and oxidized by concentrated sulfuric acid; the autoclave for receiving monohydrate magnesium sulfate (II) comprises a body, a cap, a filter mounted within the cap, which consists of two perforated disks and of the cloth placed therebetween and of the input pipe for caustic steam of the initial solution and compressed air and of the output pipe for mother solution; The device for discharge of the salt from the autoclave is made at the body of the autoclave with the possibility of joining. 3. Field of Application Hydrometallurgy, in particular production of monohydrate magnesium sulfate (II).