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Method for preparing concrete aggregate from titanium-containing blast furnace slag
The invention discloses a method for preparing concrete aggregate from titanium-containing blast furnace slag, the method comprises the following steps: feeding the titanium-containing blast furnace slag into a slag pool, naturally cooling, spraying water and cooling to obtain heavy slag, and crushing, screening and magnetically separating the heavy slag to obtain the concrete aggregate. By controlling the flow rate of the blast furnace slag entering the slag pool and designing the appropriate slag layer thickness and cooling mode, the crystallization condition of the blast furnace slag in the cooling process is improved, and the formation of a glass phase is reduced, so that the strength of the obtained heavy slag is stable, and the heavy slag can be effectively used as concrete aggregate; by designing a cooling mode of slowly cooling at first and then rapidly cooling, the problems that the crushing difficulty and cost are increased due to overhigh strength of the heavy slag and the strength cannot reach the concrete aggregate standard due to overlow strength are solved.
本发明公开了一种含钛高炉渣制备混凝土骨料的方法，它是将含钛高炉渣进入渣池后采用先自然冷却、后喷水冷却的方式得到重矿渣，重矿渣经破碎、筛分、磁选得到混凝土骨料。本发明通过控制高炉渣进入渣池的流速以及设计适宜的渣层厚度和冷却方式，改善了高炉渣在冷却过程中的结晶条件，减少了玻璃相的形成，使得到的重矿渣的强度得到稳定，能有效作为混凝土骨料使用；通过设计先慢速缓冷后急速快冷的冷却方式，解决了重矿渣强度过高增加破碎难度和成本，强度过低又达不到混凝土骨料标准的问题。
Method for preparing concrete aggregate from titanium-containing blast furnace slag
The invention discloses a method for preparing concrete aggregate from titanium-containing blast furnace slag, the method comprises the following steps: feeding the titanium-containing blast furnace slag into a slag pool, naturally cooling, spraying water and cooling to obtain heavy slag, and crushing, screening and magnetically separating the heavy slag to obtain the concrete aggregate. By controlling the flow rate of the blast furnace slag entering the slag pool and designing the appropriate slag layer thickness and cooling mode, the crystallization condition of the blast furnace slag in the cooling process is improved, and the formation of a glass phase is reduced, so that the strength of the obtained heavy slag is stable, and the heavy slag can be effectively used as concrete aggregate; by designing a cooling mode of slowly cooling at first and then rapidly cooling, the problems that the crushing difficulty and cost are increased due to overhigh strength of the heavy slag and the strength cannot reach the concrete aggregate standard due to overlow strength are solved.
本发明公开了一种含钛高炉渣制备混凝土骨料的方法，它是将含钛高炉渣进入渣池后采用先自然冷却、后喷水冷却的方式得到重矿渣，重矿渣经破碎、筛分、磁选得到混凝土骨料。本发明通过控制高炉渣进入渣池的流速以及设计适宜的渣层厚度和冷却方式，改善了高炉渣在冷却过程中的结晶条件，减少了玻璃相的形成，使得到的重矿渣的强度得到稳定，能有效作为混凝土骨料使用；通过设计先慢速缓冷后急速快冷的冷却方式，解决了重矿渣强度过高增加破碎难度和成本，强度过低又达不到混凝土骨料标准的问题。
Method for preparing concrete aggregate from titanium-containing blast furnace slag
一种含钛高炉渣制备混凝土骨料的方法
GAO LISHAN (author) / WU DENGYOU (author) / LUO XINSHENG (author) / HENG HONG (author) / ZHANG QIULIN (author)
2021-12-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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