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Producción de agregados secundarios
Un procedimiento de preparación de partículas de agregado compuestas de sucesivas capas de productos de reacción basados en carbonato sólido endurecidos, comprendiendo el procedimiento el volteo de finos carbonatables, o finos inertes, y un aglutinante carbonatable, en presencia de humedad y dióxido de carbono, en el que el agua se controla estrechamente para que esté presente en una relación en peso con respecto a los sólidos de no más de 0,5:1, de tal modo que los materiales carbonatables y el dióxido de carbono reaccionan a medida que prosigue el volteo.
Secondary aggregates are prepared from inert waste fines, from, for example, quarrying and combustion processes, using a combination of accelerated carbonation and tumbling, such that aggregate particles composed of successive layers of solid carbonate-based reaction products form a hard aggregate suitable for use in concrete. The process may carried out by loading the starting materials, and if necessary, water into a cylindrical drum that is rotatable about its horizontal axis, and the interior is charged with a carbon dioxide atmosphere, or mounted within a larger vessel that holds a carbon dioxide atmosphere. Aggregates are formed as coatings on core particles as tumbling proceeds, and the coatings are hardened by in situ formation of carbonates by reaction with the carbon dioxide.
Producción de agregados secundarios
Un procedimiento de preparación de partículas de agregado compuestas de sucesivas capas de productos de reacción basados en carbonato sólido endurecidos, comprendiendo el procedimiento el volteo de finos carbonatables, o finos inertes, y un aglutinante carbonatable, en presencia de humedad y dióxido de carbono, en el que el agua se controla estrechamente para que esté presente en una relación en peso con respecto a los sólidos de no más de 0,5:1, de tal modo que los materiales carbonatables y el dióxido de carbono reaccionan a medida que prosigue el volteo.
Secondary aggregates are prepared from inert waste fines, from, for example, quarrying and combustion processes, using a combination of accelerated carbonation and tumbling, such that aggregate particles composed of successive layers of solid carbonate-based reaction products form a hard aggregate suitable for use in concrete. The process may carried out by loading the starting materials, and if necessary, water into a cylindrical drum that is rotatable about its horizontal axis, and the interior is charged with a carbon dioxide atmosphere, or mounted within a larger vessel that holds a carbon dioxide atmosphere. Aggregates are formed as coatings on core particles as tumbling proceeds, and the coatings are hardened by in situ formation of carbonates by reaction with the carbon dioxide.
Producción de agregados secundarios
HILLS COLIN (author) / CAREY PAULA (author)
2020-03-09
Patent
Electronic Resource
Spanish
IPC:
B09B
DISPOSAL OF SOLID WASTE
,
Beseitigung von festem Abfall
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
B09C
Wiedergewinnung von verseuchtem Boden
,
RECLAMATION OF CONTAMINATED SOIL
/
C04B
Kalk
,
LIME
Procedimiento de producción de agregados a partir de composiciones de cemento
| European Patent Office | 2019