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Method for preparing nanoscale carbonized steel slag cementing material
The invention relates to a method for preparing a nano-scale carbonized steel slag cementing material, which comprises the following steps: S1, stirring and mixing steel slag powder and a magnesium chloride aqueous solution to obtain a first steel slag mixed solution; s2, carbon dioxide is introduced into the first steel slag mixed liquid for a first-stage carbonization reaction, and aragonite type carbonized steel slag reaction liquid is obtained; s3, stirring and mixing the aragonite type carbonized steel slag reaction solution and an alcohol amine compound to obtain a second steel slag mixed solution; s4, carbon dioxide is introduced into the second steel slag mixed liquid for a second-stage carbonization reaction, and calcite type carbonized steel slag reaction liquid is obtained; and S5, carrying out post-treatment on the calcite type carbonized steel slag reaction liquid to obtain the nanoscale carbonized steel slag cementing material. According to the preparation method disclosed by the invention, the steel slag powder is catalyzed and induced by magnesium chloride to be carbonized to generate aragonite, and then the aragonite is accelerated to be converted into calcite through the alcohol amine compound, so that the carbonized steel slag cementing material with a nano scale can be prepared within about 10-60 minutes; the method has the advantages of increasing the specific surface area of the carbonized steel slag, improving the activity of the carbonized steel slag and improving the mechanical property of the cement-based material.
本发明涉及一种制备具有纳米尺度的碳化钢渣胶凝材料的方法，其包括以下步骤，S1将钢渣粉和氯化镁水溶液经过搅拌混合，得到第一钢渣混合液；S2在第一钢渣混合液中通入二氧化碳进行一级碳化反应，得到文石型碳化钢渣反应液；S3将文石型碳化钢渣反应液和醇胺类化合物经过搅拌混合，得到第二钢渣混合液；S4在第二钢渣混合液中通入二氧化碳进行二级碳化反应，得到方解石型碳化钢渣反应液；S5将方解石型碳化钢渣反应液经过后处理，得到具有纳米尺度的碳化钢渣胶凝材料。本发明先通过氯化镁催化诱导钢渣粉碳化产生文石、再通过醇胺类化合物加速文石转化为方解石，能在10~60min左右制备得到具有纳米尺度的碳化钢渣胶凝材料，具有提高碳化钢渣的比表面积、改善碳化钢渣的活性、提升水泥基材料的力学性能的优点。
Method for preparing nanoscale carbonized steel slag cementing material
The invention relates to a method for preparing a nano-scale carbonized steel slag cementing material, which comprises the following steps: S1, stirring and mixing steel slag powder and a magnesium chloride aqueous solution to obtain a first steel slag mixed solution; s2, carbon dioxide is introduced into the first steel slag mixed liquid for a first-stage carbonization reaction, and aragonite type carbonized steel slag reaction liquid is obtained; s3, stirring and mixing the aragonite type carbonized steel slag reaction solution and an alcohol amine compound to obtain a second steel slag mixed solution; s4, carbon dioxide is introduced into the second steel slag mixed liquid for a second-stage carbonization reaction, and calcite type carbonized steel slag reaction liquid is obtained; and S5, carrying out post-treatment on the calcite type carbonized steel slag reaction liquid to obtain the nanoscale carbonized steel slag cementing material. According to the preparation method disclosed by the invention, the steel slag powder is catalyzed and induced by magnesium chloride to be carbonized to generate aragonite, and then the aragonite is accelerated to be converted into calcite through the alcohol amine compound, so that the carbonized steel slag cementing material with a nano scale can be prepared within about 10-60 minutes; the method has the advantages of increasing the specific surface area of the carbonized steel slag, improving the activity of the carbonized steel slag and improving the mechanical property of the cement-based material.
本发明涉及一种制备具有纳米尺度的碳化钢渣胶凝材料的方法，其包括以下步骤，S1将钢渣粉和氯化镁水溶液经过搅拌混合，得到第一钢渣混合液；S2在第一钢渣混合液中通入二氧化碳进行一级碳化反应，得到文石型碳化钢渣反应液；S3将文石型碳化钢渣反应液和醇胺类化合物经过搅拌混合，得到第二钢渣混合液；S4在第二钢渣混合液中通入二氧化碳进行二级碳化反应，得到方解石型碳化钢渣反应液；S5将方解石型碳化钢渣反应液经过后处理，得到具有纳米尺度的碳化钢渣胶凝材料。本发明先通过氯化镁催化诱导钢渣粉碳化产生文石、再通过醇胺类化合物加速文石转化为方解石，能在10~60min左右制备得到具有纳米尺度的碳化钢渣胶凝材料，具有提高碳化钢渣的比表面积、改善碳化钢渣的活性、提升水泥基材料的力学性能的优点。
Method for preparing nanoscale carbonized steel slag cementing material
一种制备具有纳米尺度的碳化钢渣胶凝材料的方法
SHI TAO (author) / LIU YANMING (author) / DIAO XIUTENG (author)
2024-12-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-strength carbonized steel slag cementing material and preparation method thereof
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