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Innovative MA.P.E./Cr.05.LV Technology for Effective Cr(VI) Reduction in Cement

MA.P.E./Cr.05.LV is a cutting-edge reducing agent designed for the effective reduction of hexavalent chromium (Cr(VI)) in cement. This low viscosity liquid is easy to dose precisely, even in small amounts, providing a shelf life of over three months under proper storage conditions. The agent operates optimally at a pH of 9.5, ensuring non-corrosive properties and stable performance, even in low temperatures. It demonstrates substantial effectiveness despite high free lime content in clinker and offers economical advantages over traditional reducing agents.

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Innovative MA.P.E./Cr.05.LV Technology for Effective Cr(VI) Reduction in Cement

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  1. MA.P.E./Cr 05 LV A brand new technology for Cr(VI) reduction

  2. MA.P.E./Cr 05 LV • Product characteristics: • Low viscosity liquid: the dosage is very easy and precise, even at very low amounts • Shelf storage life: more than 3 months, when stored correctly • Reducing effect on ground cement: minimum 6 months • Dosage: 40-50 g/t of cement for each ppm of Cr(VI) to be reduced • Specific gravity: 1,22 g/cm3 • pH: 9,5±1,5: no acid pH and no corrosive properties • Available also in low freeze grade (stable until -15°C)

  3. MA.P.E./Cr 05 LV How does it work? The MA.P.E./Cr 05 LV is a water suspension of a reducing agent based on antimony(III) (21% active component). The reducing agent is soluble only at very alkaline pH: the Sb3+ is available for Cr(VI) reduction only when cement is mixed with water, and can not be oxidised during cement milling or storage, even at high levels of temperatures and high humidity conditions. The Sb3+ is less acid than Sn2+ or Fe2+, and can not be deactivated after reaction with free lime: the reducing agent is effective also with clinkers with high free CaO content.

  4. MA.P.E./Cr 05 LV: maintenance of the reducing properties Cr(VI) content of cement MA.P.E./Cr 05 LV – 37 g/t·ppm MA.P.E./Cr 05 LV – 43 g/t·ppm

  5. MA.P.E./Cr 05 LV: efficacy of the reducing properties Clinker with 1,78% free CaO.

  6. MA.P.E./Cr 05 LV: example of cost calculation Practical example: cement with 5 ppm of soluble Cr(VI) Target: reduction from 5 to 1 ppm Dosage: 4 ppm · 45 g/t·ppm = 180 g/t Price: 2,2 €/kg Economical impact: 2,2 €/kg · 0,180 kg/t = 0,396 €/t In some cases the MA.P.E./Cr 05 LV can have an impact lower than iron sulfate

  7. MA.P.E./Cr 05 LV: economical advantages in comparison to SnSO4 Dosage: 50 g/t·ppm Dosage: 44 g/t·ppm

  8. GRACIAS

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