Mechano-chemistry of rock materials for the industrial production of new geopolymeric cements
| Autor: | Paolo Plescia, Donatella Capitani, Giorgio Contini, Girolamo Belardi, Piero Ciccioli, Elena Soragni, Sabrina Gualtieri |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Factories of the Future-The Italian Flagship Initiative, edited by Tolio T., Copani G., Terkaj W., pp. 383–407. Basel: Springer Nature Switzerland, 2019 info:cnr-pdr/source/autori:Ciccioli P.; Capitani D.; Gualtieri S.; Soragni E.; Belardi G.; Plescia P.; Contini G./titolo:Mechano-chemistry of rock materials for the industrial production of new geopolymeric cements/titolo_volume:Factories of the Future-The Italian Flagship Initiative/curatori_volume:Tolio T., Copani G., Terkaj W./editore: /anno:2019 Factories of the Future ISBN: 9783319943572 |
| DOI: | 10.1007/978-3-319-94358-9_18 |
| Popis: | The reduction of CO2 emission from cement industry represents a priority task in the roadmap defined for the year 2020 by the European Union (EU) Commission for a resource efficient Europe. Several research projects have been undertaken aimed at developing non-hazardous materials as partial substitute of clinker in cement formulations, but also new, low-carbon, cements fully replacing clinker. Among the new cementing materials, Si–Al geopolymers seem the most promising, in terms of CO2 emission and mechanical and thermal properties. In this chapter, mechano-chemical processing of kaolin clays to produce metakaolin (MKA) for the synthesis of Si–Al geopolymers is proposed as an alternative process to replace thermal treatments performed at 650–850 °C. Results obtained show that the mechano-chemical process is also suitable to make low cost blended Si–Al geopolymers where 40% of MKA is replaced by mechano-chemically activated volcanic tuffs. The compatibility of mechano-chemistry with industrial production was investigated by building a prototype milling system that was tested in a small industrial facility producing zeolites from industrial wastes. The degree of automation allowed the prototype to work unattended for 10 months. Based on the results obtained from these tests, a milling system for a full scale production of mechano-chemically activated rock materials was designed, and its performances analysed. |
| Databáze: | OpenAIRE |
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