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  1. Chemical composition (%):

     SiO2  CaO  Al2O3  MgO  FeO  K  Cu  Zn  Na
     37÷41  24,2  11,5  10,4  4,6  3,9  0,9  0,3  0,4

  2. Hardness : 6 ÷ 7o Moh's skale
  3. Silicon contents : < 1% (BIA NR 405222096)
  4. Electric Conductivity : 25 mS/m
  5. Chloride contents : 0,0022% m/m
  6. Moisture contents : 0,20%
  7. Bulk density : ~ 1,7 Mg/m3
  8. Form : irregular, sharp-edge
  9. Manufactured gravitates:
       a) 0,2 ÷ 0,8 mm
       b) 0,4 ÷ 1,4 mm
       c) 0,4 ÷ 3,2 mm
       d) 1,4 ÷ 3,2 mm
       e) 3,2 ÷ 5,0 mm
       f) or others required by the buyers
  10. Average wear: 18 ÷ 34 kg/m2, it is determinated by air pressure,nozle size, inpingement angle, hardness of object,nature of impurities on surface to be cleaned.

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