A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A CIRCULAR PROCESS FOR THE RECOVERY OF MINERAL WASTE MATERIALS
The present invention relates to a circular process for the recycling of mineral waste and/or existing building materials to obtain a lightweight building material having a dry density of from 60 to 1500 kg/m3, preferably from 300 to 1200 kg/m3, more preferably from 600 to 1000 kg/m3, comprising the steps of breaking up, crushing, and optionally milling, sorting, washing, filtering, concentrating, drying and/or screening mineral waste, existing building materials and/or soils to obtain a recycled material having a median particle size d50, as measured by laser granulometry, of from 1 µm to 6 mm, preferably from 1 µm to 4 mm, more preferably from 5 µm to 4 mm, even more preferably from 5 µm to 1 mm, and most preferably from 10 µm to 0.7 mm; mixing 40 to 90 parts by weight of the recycled material, calculated as dry weight, and 10 to 60 parts by weight of a cement; adding a foaming agent, optional additives and water to obtain a suspension; foaming the resulting suspension by physical, chemical or mechanical means; and allowing the foamed suspension to harden and dry. Moreover, the present invention relates to a lightweight building material having a dry density of from 60 to 1500 kg/m3, preferably from 300 to 1200 kg/m3, more preferably from 600 to 1000 kg/m3, obtainable by said process.
A CIRCULAR PROCESS FOR THE RECOVERY OF MINERAL WASTE MATERIALS
The present invention relates to a circular process for the recycling of mineral waste and/or existing building materials to obtain a lightweight building material having a dry density of from 60 to 1500 kg/m3, preferably from 300 to 1200 kg/m3, more preferably from 600 to 1000 kg/m3, comprising the steps of breaking up, crushing, and optionally milling, sorting, washing, filtering, concentrating, drying and/or screening mineral waste, existing building materials and/or soils to obtain a recycled material having a median particle size d50, as measured by laser granulometry, of from 1 µm to 6 mm, preferably from 1 µm to 4 mm, more preferably from 5 µm to 4 mm, even more preferably from 5 µm to 1 mm, and most preferably from 10 µm to 0.7 mm; mixing 40 to 90 parts by weight of the recycled material, calculated as dry weight, and 10 to 60 parts by weight of a cement; adding a foaming agent, optional additives and water to obtain a suspension; foaming the resulting suspension by physical, chemical or mechanical means; and allowing the foamed suspension to harden and dry. Moreover, the present invention relates to a lightweight building material having a dry density of from 60 to 1500 kg/m3, preferably from 300 to 1200 kg/m3, more preferably from 600 to 1000 kg/m3, obtainable by said process.
A CIRCULAR PROCESS FOR THE RECOVERY OF MINERAL WASTE MATERIALS
KREISPROZESS ZUR RÜCKGEWINNUNG VON MINERALABFALLMATERIALIEN
PROCÉDÉ CIRCULAIRE POUR LA RÉCUPÉRATION DE DÉCHETS MINÉRAUX
ETTER MARCO (author) / GONZENBACH URS T (author) / STURZENEGGER PHILIP N (author)
2024-06-26
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
A CIRCULAR PROCESS FOR THE RECOVERY OF MINERAL WASTE MATERIAL
| European Patent Office | 2024
Recovery of lithium from waste materials
| British Library Online Contents | 2012
| European Patent Office | 2024