Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a recycling and reusing method for fly ash. The recycling and reusing method comprises the following steps: fly ash is ground until the specific surface area thereof reaches 300m<2>/kg-550m<2>/kg, then fly ashes with the specific surface area of 300m<2>/kg-350m<2>/kg, 400m<2>/kg-450m<2>/kg and 500m<2>/kg-550m<2>/kg are selected, and are further compounded according to the proportion of 10%-20%, 30%-40% and 50%-70%, so that modified compounded fly ash is obtained; the obtained modified compounded fly ash is added into cement clinker according to the dosage of 15%-35%, and at the same time flue gas desulfurization gypsum which accounts for 1%-3% of the mass of fly ash is further added into cement clinker to be mixed and ground. According to the recycling and reusing method for fly ash, provided by the invention, by improving the fineness of fly ash and optimizing the particle size distribution of particles, the activity of fly ash is improved, industrial waste residue is largely utilized, and energy conservation and emission reduction are further realized.
The invention discloses a recycling and reusing method for fly ash. The recycling and reusing method comprises the following steps: fly ash is ground until the specific surface area thereof reaches 300m<2>/kg-550m<2>/kg, then fly ashes with the specific surface area of 300m<2>/kg-350m<2>/kg, 400m<2>/kg-450m<2>/kg and 500m<2>/kg-550m<2>/kg are selected, and are further compounded according to the proportion of 10%-20%, 30%-40% and 50%-70%, so that modified compounded fly ash is obtained; the obtained modified compounded fly ash is added into cement clinker according to the dosage of 15%-35%, and at the same time flue gas desulfurization gypsum which accounts for 1%-3% of the mass of fly ash is further added into cement clinker to be mixed and ground. According to the recycling and reusing method for fly ash, provided by the invention, by improving the fineness of fly ash and optimizing the particle size distribution of particles, the activity of fly ash is improved, industrial waste residue is largely utilized, and energy conservation and emission reduction are further realized.
Recycling and reusing method for fly ash
ZHANG DONG (Autor:in)
03.02.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Intelligent water resource recycling and reusing device
| Europäisches Patentamt | 2024
Recycling and reusing production process for glassware
| Europäisches Patentamt | 2021
Recycling and reusing method of waste concrete solid waste
| Europäisches Patentamt | 2022
Rainwater recycling and reusing system and rainwater utilization method
| Europäisches Patentamt | 2020