Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of low-cost solid waste-based sulphoaluminate cement
The invention relates to a preparation method of low-cost solid waste-based sulphoaluminate cement. According to the method, bauxite, limestone and natural gypsum are replaced with waste refractory materials, steel slag and desulfurized gypsum, the waste refractory materials, the steel slag and the desulfurized gypsum are evenly mixed with silica and lime and then ground, the mixture is put into a tunnel kiln to be calcined, the calcination temperature is 1270-1400 DEG C, the calcination time is 5 h, and the heat preservation time is 30-120 min. and calcining is conducted to obtain the sulphoaluminate cement. The utilization rate of the waste refractory, the steel slag and the desulfurized gypsum can be greatly increased, and the raw material cost is reduced. The prepared sulphoaluminate cement clinker is high in hydration reaction speed, the strength of the sulphoaluminate cement clinker after initial setting and hardening is rapidly increased, and the later strength of the sulphoaluminate cement clinker is stable. The strength of the prepared sulphoaluminate cement meets the sulphoaluminate cement standard.
本发明涉及一种低成本固废基硫铝酸盐水泥的制备方法。该方法以废旧耐材、钢渣、脱硫石膏来代替铝矾土、石灰石和天然石膏，通过与硅石、石灰进行混匀后研磨，放入隧道窑中进行煅烧，煅烧温度为1270～1400℃，煅烧时间为5h，保温时间为30‑120min。煅烧处理后制得硫铝酸盐水泥。本发明可以大幅度提升废旧耐材、钢渣、脱硫石膏的利用率，降低原料成本。制备的硫铝酸盐水泥熟料水化反应速度块，初凝硬化后的强度增长迅速且后期强度稳定。本发明制备的硫铝酸盐水泥强度符合硫铝酸盐水泥标准。
Preparation method of low-cost solid waste-based sulphoaluminate cement
The invention relates to a preparation method of low-cost solid waste-based sulphoaluminate cement. According to the method, bauxite, limestone and natural gypsum are replaced with waste refractory materials, steel slag and desulfurized gypsum, the waste refractory materials, the steel slag and the desulfurized gypsum are evenly mixed with silica and lime and then ground, the mixture is put into a tunnel kiln to be calcined, the calcination temperature is 1270-1400 DEG C, the calcination time is 5 h, and the heat preservation time is 30-120 min. and calcining is conducted to obtain the sulphoaluminate cement. The utilization rate of the waste refractory, the steel slag and the desulfurized gypsum can be greatly increased, and the raw material cost is reduced. The prepared sulphoaluminate cement clinker is high in hydration reaction speed, the strength of the sulphoaluminate cement clinker after initial setting and hardening is rapidly increased, and the later strength of the sulphoaluminate cement clinker is stable. The strength of the prepared sulphoaluminate cement meets the sulphoaluminate cement standard.
本发明涉及一种低成本固废基硫铝酸盐水泥的制备方法。该方法以废旧耐材、钢渣、脱硫石膏来代替铝矾土、石灰石和天然石膏，通过与硅石、石灰进行混匀后研磨，放入隧道窑中进行煅烧，煅烧温度为1270～1400℃，煅烧时间为5h，保温时间为30‑120min。煅烧处理后制得硫铝酸盐水泥。本发明可以大幅度提升废旧耐材、钢渣、脱硫石膏的利用率，降低原料成本。制备的硫铝酸盐水泥熟料水化反应速度块，初凝硬化后的强度增长迅速且后期强度稳定。本发明制备的硫铝酸盐水泥强度符合硫铝酸盐水泥标准。
Preparation method of low-cost solid waste-based sulphoaluminate cement
一种低成本固废基硫铝酸盐水泥的制备方法
JIN HAI (Autor:in) / MAO RUI (Autor:in) / MAO SHENDONG (Autor:in)
20.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2021
Method for reducing preparation cost of sulphoaluminate cement
| Europäisches Patentamt | 2020
Method for preparing sulphoaluminate cement from industrial solid waste
| Europäisches Patentamt | 2024
SOLID WASTE-BASED WHITE SULPHOALUMINATE CEMENT, AND PREPARATION METHOD THEREFOR AND USE THEREOF
| Europäisches Patentamt | 2023