Ferrous Sulfate for reduction of chromate content in cement by tgv36994

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									Ferrous Sulfate                      for reduction of chromate content in cement.
Kemira ferrous sulfate is a cost effective solution for chromate reduction in cement
in order to meet the requirements of EU Directive 2003/53/EC.




Kemira has designed a selection of ferrous sulfates to serve         step in the production process.
a variety of a cement mills’s needs. Specific attention has           The selection of the right product is a compromise between
been paid to easy storage and dosing properties of the               economic and process parameters (granulate for ease of
reductant. Ferrous sulfate is typically dosed either in the          transportation and storage vs. treated and ground for easy
cement grinding mill feed or alternatively as the very last          dosage and runnability)




Typical properties:
                                               Dry             DD2C               G2C          G2C-G              Mono
 Fe (%)
   2+
                                              18.0             18.5               13.0           13.0             29.0
 CaSO4 x 2H2O (%)                               0.1              2.0              30.0           30.0               0.2
 Bulk density (kg/m3)                          900              900               1000           800               700
 Particle form                               crystal           crystal           granule       powder            powder
 Particle size (mm)                           <1               <1                 <8           < 0.6              < 0.4
 Sulfuric acid (%)                           < 0.7             < 0.7              <5           <5                 < 0.7
 Magnesium sulfate (%)                         6.0               6.0              10.0          10.0               10.0
 Residual moisture (%)                         <1              <1                 <5           <5                 <1
 Ferrous                          Moist             Semi           Dry             DD2C            G2C          G2C-G        Mono
 Sulfate
 grades                           FeSO4x7H2O        FeSO4x7H2O     FeSO4x7H2O      FeSO4x7H2O      FeSO4x1H2O   FeSO4x1H2O   FeSO4x1H2O

                                                                                   with
                                 moisture ~5%      moisture ~2%   moisture ~0.5%   an anticaking   granule        powder     powder
                                                                                   agent

 Fe2+ (%)                         ~17               ~18             ~18            ~18.5           ~13          ~13           ~29


 animal feed                                                         ●                                                         ●
 chromate reduction
 in cement                                                           ●               ●              ●             ●            ●

 waste water treatment            ●                   ●                                             ●
 treatment of
 contaminated soils               ●                   ●              ●                              ●
 manufacturing of ferric
 products                         ●                   ●              ●
 manufacturing of iron
 oxide pigments                   ●                   ●              ●

 fertilizers                                                         ●                             ●              ●            ●




Dosage
recommendation             %            Position

Dry                        0.5          grinding or grinding mill feed
DD2C                       0.5          dosage before packaging
G2C                        0.7          grinding or grinding mill feed stage
G2C-G                      0.6          dosage before packaging
Mono                       0.4          dosage before packaging


Safety precautions
Please see the Material Safety Data Sheet before handling
the material.


Classification
Ferrous sulfate                  CAS 7720-78-7       EINECS 231-753-3
Sulfuric acid                    CAS 7764-93-9 EINECS 231-639-5
Manganese sulfate                CAS 7785-87-7       EINECS 232-089-9




The manufacture of KEMIRA Ferrous Sulfate products is within the scope of the ISO 9001 Quality Management System.
The Pori Plant also has the ISO 14001 certified Environmental Management System.




          Kemira Pigments Oy               Kemira Specialty
                         Titaanitie        Environment
                  FI-28840 Pori            P.O.Box 330
                           Finland         FI-00101 Helsinki, Finland
         Tel. +358 10 861 415              Tel. +358 10 8611
      copperas@kemira.com                  www.kemira.com

								
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