Magnesium Sulphate Manufacturing

Manufacturing Process of Magnesium Sulphate: –

 Chemical formula –  MgSo4.7H2O

Manufacturing Process :-  

Step – 1 Reaction

First take previous mother liquor of previous batch in Reactor – 1  check specific gravity of mother liquor

Than start addition of spent sulphuric acid  in taken mother liquor reactor and start simultaneously addition of magnesium oxide in reactor and continue agitation while addition of both reagent continue maintain  temperature of reaction mass.

Acid and Magnesium oxide addition takes min 8 hrs. then check specific gravity add Mgo till to get desired specific gravity  after comes gravity check pH of reaction mass. 

After getting both parameters continue reaction mass agitation.

Step – 2 :- Filtration through Filter press

Than start filtration through filter press and collect mother liquor in crystallizer while filtration temp of mass and collect all mother liquor ( containing MgSo4 in soluble form).

After filtration wash filter press by fresh water and collect water in to another storage tank max  washing is required, this washing water will be used in next batch.

After washing collect wet cake of filer press in to tray for further dry and wash filer press for next batch make ready.

 Step – 3 Crystallization :-

After collection magnesium sulphate in soluble form will cool down by agitation in ribbon blender and crystal will come out from liquid, this process times cycles.

Step – 4 Centrifugation:-

Start centrifuge of this mass constraining crystallizers materials separate crystal of MgSo4 by this process. Collect mother liquor in storage tank for reuse in next batch. And pack Mgso4 crystal in 25kg or 50 kg bags.

Magnesium Sulphate (MgSO4.7H2O)  Magnesium Sulphate heptahydrate

  • Free flowing –                            crystalline form
  • Matter insoluble in water, per cent by weight, Maximum      1.0
  • Magnesium {as Mg), per cent by weight, minimum               9.6
  • Lead (as Pb), percent by weight, maximum.                           0.003
  • pH (5% solution)                                                                     5.0-8.0
  • Sulphur (as S),percent by weight, minimum                         12.0

Raw Material Specification:- 

MgO- 78% to 80%

S.Acid- 75 %,

S.Acid -98 %