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How to produce magnesium sulfate heptahydrate via Sulfuric acid process.
Author:admin Time:2012/10/22 8:35:43 Click Num:3520
关键字:magnesium sulfate heptahydrate

 

How to produce magnesium sulfate heptahydrate via Sulfuric acid process?

Raw materials:Magnesium oxide or magnesium hydroxide or magnesium carbonate and sulfuric acid.

Reaction formula:

MgO+H2SO4+6H2O=MgSO4*7H2O

Mg(OH)2+H2SO4+5H2O=MgSO4*7H2O

MgCO3+H2SO4+6H2O=MgSO4*7H2O

Make an example as Magnesium Oxide:

1.Measure the magnesium oxide ore and sulfuric acid proportionally.

2.Add some water in neutralizing tank, slowly adding magnesium oxide and Stiring itafter that adding sulfuric acid and keep PH=5,Density=1.370g/m³ - 1.384g/m³,Temperature=80.

3.Filter the mixture and put it in the crystallizer.

4.Cooled to 30and subjected to centrifugal separation.

5.Put wet material into vibration fluidized bed.

6.Dry it and get Magnesium sulfate heptahydrate at 50-55

 

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