Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing high-class concrete admixture with composite powder of steel slag and mineral slag
The invention discloses a method for preparing a high-class concrete admixture with composite powder of steel slag and mineral slag and belongs to the fields of solid waste resource utilization and building materials. A novel crushing machine with a high-efficiency deironing function, a vertical mill with a high-efficiency circulation deironing function or a rolling mill with the high-efficiency circulation deironing function, and a tubular mill with the high-efficiency circulation deironing function are connected in three stages in series, so that the powder mill equipment can take the synergistic and real-time circulation deironing and low-energy-consumption low-cost superfine milling in the granulated blast-furnace slag and steel slag powder milling process are achieved. In the product, steel slag micro powder accounts for 20-50%, the mineral slag micro powder accounts for 35-65%, the flue gas desulfurization gypsum micro powder accounts for 5-15%, and the specific surface area of the product is 630-750m<2>/kg. Due to the synergetic stimulation effect of the granulated blast-furnace slag micro powder, the steel slag micro powder and the flue gas desulfurization gypsum, the ratio of the admixture in a concrete gel material can be up to 60-100%, and ordinary-strength and high-property concrete, high-strength and high-property concrete and super-high strength and high-property concrete with C40-C100 can be prepared. By adopting the method, the production of high-property concrete is greatly improved, the energy is saved, the emission is reduced, and the cost is lowered.
Method for preparing high-class concrete admixture with composite powder of steel slag and mineral slag
The invention discloses a method for preparing a high-class concrete admixture with composite powder of steel slag and mineral slag and belongs to the fields of solid waste resource utilization and building materials. A novel crushing machine with a high-efficiency deironing function, a vertical mill with a high-efficiency circulation deironing function or a rolling mill with the high-efficiency circulation deironing function, and a tubular mill with the high-efficiency circulation deironing function are connected in three stages in series, so that the powder mill equipment can take the synergistic and real-time circulation deironing and low-energy-consumption low-cost superfine milling in the granulated blast-furnace slag and steel slag powder milling process are achieved. In the product, steel slag micro powder accounts for 20-50%, the mineral slag micro powder accounts for 35-65%, the flue gas desulfurization gypsum micro powder accounts for 5-15%, and the specific surface area of the product is 630-750m<2>/kg. Due to the synergetic stimulation effect of the granulated blast-furnace slag micro powder, the steel slag micro powder and the flue gas desulfurization gypsum, the ratio of the admixture in a concrete gel material can be up to 60-100%, and ordinary-strength and high-property concrete, high-strength and high-property concrete and super-high strength and high-property concrete with C40-C100 can be prepared. By adopting the method, the production of high-property concrete is greatly improved, the energy is saved, the emission is reduced, and the cost is lowered.
Method for preparing high-class concrete admixture with composite powder of steel slag and mineral slag
HAO JUNZHONG (Autor:in) / HAO JUNJUN (Autor:in) / WANG YUFENG (Autor:in) / TANG CHANG (Autor:in) / MA XUMING (Autor:in) / CUI XIAOWEI (Autor:in) / ZHANG NING (Autor:in) / CHEN JIE (Autor:in)
22.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Carbonized steel slag-nickel slag composite mineral admixture
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