A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing high-activity superfine slag powder from titanium extraction tailings
The invention discloses a method for preparing high-activity superfine slag powder from titanium extraction tailings, and relates to the technical field of slag recycling treatment.The method comprises the following steps that S10, the titanium extraction tailings are subjected to primary dechlorination treatment to obtain primarily-washed titanium extraction tailings; s20, primary grinding treatment is carried out on the titanium extraction tailings subjected to primary washing, meanwhile, filtering and secondary washing treatment are carried out on the titanium extraction tailings subjected to primary grinding treatment, a half-dry material is obtained, and the weight content of chlorine in the half-dry material is 0.15% or below; and step S30, adding copperas accounting for 2-5% of the weight of the semi-dry material into the semi-dry material, mixing to obtain a mixture, and then carrying out secondary dechlorination treatment and secondary grinding treatment on the mixture by adopting a high-temperature steam dechlorination process to obtain the high-activity superfine slag powder. The content of chlorine in the semi-dry material is reasonably controlled, and a high-temperature steam dechlorination process is adopted, so that the problem that the high-activity superfine slag powder cannot be prepared from the titanium extraction tailings in the prior art is solved.
本发明公开了一种提钛尾渣制备高活性矿渣微粉的方法，涉及矿渣回收处理技术领域，方法包括如下步骤：步骤S10、对提钛尾渣进行一次脱氯处理，以获得初洗的提钛尾渣；步骤S20、对初洗的提钛尾渣进行一次磨细处理，同时对一次磨细处理后的提钛尾渣进行过滤和二洗处理，以获得半干物料，其中，所述半干物料中氯的重量含量为0.15％以下；步骤S30、将半干物料重量的2～5％的绿矾，加入至半干物料中并混合得到混合物，然后将混合物再次采用的是高温蒸汽脱氯工艺进行二次脱氯处理和二次磨细处理，以得到高活性矿渣微粉。本发明合理控制半干物料中氯的含量并采用高温蒸汽脱氯工艺解决了现有技术不能够利用提钛尾渣制备高活性矿渣微粉的问题。
Method for preparing high-activity superfine slag powder from titanium extraction tailings
The invention discloses a method for preparing high-activity superfine slag powder from titanium extraction tailings, and relates to the technical field of slag recycling treatment.The method comprises the following steps that S10, the titanium extraction tailings are subjected to primary dechlorination treatment to obtain primarily-washed titanium extraction tailings; s20, primary grinding treatment is carried out on the titanium extraction tailings subjected to primary washing, meanwhile, filtering and secondary washing treatment are carried out on the titanium extraction tailings subjected to primary grinding treatment, a half-dry material is obtained, and the weight content of chlorine in the half-dry material is 0.15% or below; and step S30, adding copperas accounting for 2-5% of the weight of the semi-dry material into the semi-dry material, mixing to obtain a mixture, and then carrying out secondary dechlorination treatment and secondary grinding treatment on the mixture by adopting a high-temperature steam dechlorination process to obtain the high-activity superfine slag powder. The content of chlorine in the semi-dry material is reasonably controlled, and a high-temperature steam dechlorination process is adopted, so that the problem that the high-activity superfine slag powder cannot be prepared from the titanium extraction tailings in the prior art is solved.
本发明公开了一种提钛尾渣制备高活性矿渣微粉的方法，涉及矿渣回收处理技术领域，方法包括如下步骤：步骤S10、对提钛尾渣进行一次脱氯处理，以获得初洗的提钛尾渣；步骤S20、对初洗的提钛尾渣进行一次磨细处理，同时对一次磨细处理后的提钛尾渣进行过滤和二洗处理，以获得半干物料，其中，所述半干物料中氯的重量含量为0.15％以下；步骤S30、将半干物料重量的2～5％的绿矾，加入至半干物料中并混合得到混合物，然后将混合物再次采用的是高温蒸汽脱氯工艺进行二次脱氯处理和二次磨细处理，以得到高活性矿渣微粉。本发明合理控制半干物料中氯的含量并采用高温蒸汽脱氯工艺解决了现有技术不能够利用提钛尾渣制备高活性矿渣微粉的问题。
Method for preparing high-activity superfine slag powder from titanium extraction tailings
一种提钛尾渣制备高活性矿渣微粉的方法
HAO JIANZHANG (author) / ZENG GUANWU (author) / REN YANLI (author)
2023-12-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Method for preparing superfine slag powder from titanium extraction tailings
| European Patent Office | 2023
| European Patent Office | 2022
Processing method for preparing concrete admixture from superfine slag powder
| European Patent Office | 2021
Method for preparing superfine slag powder from semi-dry desulfurization ash
| European Patent Office | 2022