Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Circulating fluidized bed slag as well as modification method and application thereof
The invention provides circulating fluidized bed slag as well as a modification method and application thereof, and belongs to the technical field of resource utilization of industrial solid wastes. The method comprises the following steps: grinding the circulating fluidized bed slag, immersing into a separation liquid, taking out, and carrying out ball milling to obtain pretreated slag; mixing the pretreated slag with a composite exciting agent, and then grinding to obtain a powder material; and mixing the grinding material with the composite modifier, and immersing the mixture into a barium salt solution to finish modification. According to the invention, a method of combining physical grinding and the composite chemical modifier is adopted, the pore structure of the slag is effectively improved by the physical grinding mode, and the pore structure is filled with an insoluble substance generated by hydration reaction after modification by the composite chemical modifier, so that the slag is denser, the activity is improved, the expansion is reduced, and the water demand is reduced. And immersing into a barium salt solution to further reduce the content of calcium sulfate. And meanwhile, generated barium sulfate precipitates on the surface of f-Cao, so that the stability is improved, and the furnace slag is endowed with excellent radiation resistance.
本发明提供了一种循环流化床炉渣及其改性方法和应用，属于工业固体废弃物资源化利用技术领域。包含下列步骤：将循环流化床炉渣研磨后浸入分离液中，取出球磨，得到预处理炉渣；将预处理炉渣与复合激发剂混合，随后进行粉磨得粉磨料；将粉磨料与复合改性剂混合后浸入钡盐溶液中即完成改性。本发明采用物理粉磨和复合化学改性剂相结合的方法，物理粉磨的方式有效改善了炉渣的孔隙结构，复合化学改性剂改性后破坏了水化反应生成难容物填充了孔隙结构，使得更加密实，提高了活性，降低膨胀，减少需水量。浸入到钡盐溶液中，进一步降低了硫酸钙的含量。同时生成的硫酸钡沉淀在f‑Cao表面，提升了稳定性的同时还赋予了炉渣优异的防辐射性能。
Circulating fluidized bed slag as well as modification method and application thereof
The invention provides circulating fluidized bed slag as well as a modification method and application thereof, and belongs to the technical field of resource utilization of industrial solid wastes. The method comprises the following steps: grinding the circulating fluidized bed slag, immersing into a separation liquid, taking out, and carrying out ball milling to obtain pretreated slag; mixing the pretreated slag with a composite exciting agent, and then grinding to obtain a powder material; and mixing the grinding material with the composite modifier, and immersing the mixture into a barium salt solution to finish modification. According to the invention, a method of combining physical grinding and the composite chemical modifier is adopted, the pore structure of the slag is effectively improved by the physical grinding mode, and the pore structure is filled with an insoluble substance generated by hydration reaction after modification by the composite chemical modifier, so that the slag is denser, the activity is improved, the expansion is reduced, and the water demand is reduced. And immersing into a barium salt solution to further reduce the content of calcium sulfate. And meanwhile, generated barium sulfate precipitates on the surface of f-Cao, so that the stability is improved, and the furnace slag is endowed with excellent radiation resistance.
本发明提供了一种循环流化床炉渣及其改性方法和应用，属于工业固体废弃物资源化利用技术领域。包含下列步骤：将循环流化床炉渣研磨后浸入分离液中，取出球磨，得到预处理炉渣；将预处理炉渣与复合激发剂混合，随后进行粉磨得粉磨料；将粉磨料与复合改性剂混合后浸入钡盐溶液中即完成改性。本发明采用物理粉磨和复合化学改性剂相结合的方法，物理粉磨的方式有效改善了炉渣的孔隙结构，复合化学改性剂改性后破坏了水化反应生成难容物填充了孔隙结构，使得更加密实，提高了活性，降低膨胀，减少需水量。浸入到钡盐溶液中，进一步降低了硫酸钙的含量。同时生成的硫酸钡沉淀在f‑Cao表面，提升了稳定性的同时还赋予了炉渣优异的防辐射性能。
Circulating fluidized bed slag as well as modification method and application thereof
一种循环流化床炉渣及其改性方法和应用
CHENG ZHI (Autor:in) / ZHANG XUEHUI (Autor:in) / GUO TAIDONG (Autor:in) / MENG QINGSEN (Autor:in) / LIU YUHAO (Autor:in) / LIU LAN (Autor:in) / CHENG ZHIJUN (Autor:in)
29.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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