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Ferronickel slag aggregate treatment method
The invention discloses a ferronickel slag aggregate treatment method. The ferronickel slag aggregate treatment method comprises the steps of: (1) soaking ferronickel slag aggregate in a mixed aqueoussolution of sodium hydroxide and water glass; (2) adjusting the temperature of the mixed solution obtained in the step (1) to 40-60 DEG C, and keeping the temperature for 1-6 hours; (3) after the heat preservation is finished, quickly stirring the solution for 10-60 seconds; (4) adding sodium carbonate and cement powder, and performing uniform stirring; (5) standing and precipitating the solutionfor 1-2 hours, and performing separating to obtain precipitate and clarified liquid; and (6) screening out ferronickel slag aggregate with the particle size of more than 5mm in the precipitate, naturally air-drying the ferronickel slag aggregate to be used as concrete aggregate, drying and grinding the part with the particle size of less than 5mm in the precipitate to be used as a concrete admixture, and using the clarified liquid as alkali-activated material mixing water. Through treatment of the method, air holes and active ingredients on the surface of the ferronickel slag aggregate are destroyed, and the problems that the ferronickel slag aggregate is high in crushing value and has potential alkali aggregate reaction are solved.
本发明公开了一种镍铁渣骨料的处理方法，其特征在于，处理步骤如下：（1）将镍铁渣骨料浸泡于氢氧化钠与水玻璃的混合水溶液中；（2）调整步骤（1）所得的混合溶液的温度至40~60℃，并保温1~6小时；（3）保温结束后，快速搅拌10~60s；（4）再加入碳酸钠与水泥粉，搅拌均匀；（5）静止沉淀1~2h并分离获得沉淀与澄清液；（6）将沉淀中粒径大于5mm镍铁渣骨料筛分出，并自然风干，用作混凝土骨料；将沉淀中粒径小于5mm部分烘干并磨细用作混凝土掺合料；将澄清液用作碱激发材料拌合水。通过本发明的处理，破坏镍铁渣骨料表面的气孔以及活性成分，解决了镍铁渣骨料压碎值高、具有潜在碱骨料反应的问题。
Ferronickel slag aggregate treatment method
The invention discloses a ferronickel slag aggregate treatment method. The ferronickel slag aggregate treatment method comprises the steps of: (1) soaking ferronickel slag aggregate in a mixed aqueoussolution of sodium hydroxide and water glass; (2) adjusting the temperature of the mixed solution obtained in the step (1) to 40-60 DEG C, and keeping the temperature for 1-6 hours; (3) after the heat preservation is finished, quickly stirring the solution for 10-60 seconds; (4) adding sodium carbonate and cement powder, and performing uniform stirring; (5) standing and precipitating the solutionfor 1-2 hours, and performing separating to obtain precipitate and clarified liquid; and (6) screening out ferronickel slag aggregate with the particle size of more than 5mm in the precipitate, naturally air-drying the ferronickel slag aggregate to be used as concrete aggregate, drying and grinding the part with the particle size of less than 5mm in the precipitate to be used as a concrete admixture, and using the clarified liquid as alkali-activated material mixing water. Through treatment of the method, air holes and active ingredients on the surface of the ferronickel slag aggregate are destroyed, and the problems that the ferronickel slag aggregate is high in crushing value and has potential alkali aggregate reaction are solved.
本发明公开了一种镍铁渣骨料的处理方法，其特征在于，处理步骤如下：（1）将镍铁渣骨料浸泡于氢氧化钠与水玻璃的混合水溶液中；（2）调整步骤（1）所得的混合溶液的温度至40~60℃，并保温1~6小时；（3）保温结束后，快速搅拌10~60s；（4）再加入碳酸钠与水泥粉，搅拌均匀；（5）静止沉淀1~2h并分离获得沉淀与澄清液；（6）将沉淀中粒径大于5mm镍铁渣骨料筛分出，并自然风干，用作混凝土骨料；将沉淀中粒径小于5mm部分烘干并磨细用作混凝土掺合料；将澄清液用作碱激发材料拌合水。通过本发明的处理，破坏镍铁渣骨料表面的气孔以及活性成分，解决了镍铁渣骨料压碎值高、具有潜在碱骨料反应的问题。
Ferronickel slag aggregate treatment method
一种镍铁渣骨料的处理方法
LI BAOLIANG (author) / LIU YUYI (author) / CHEN YADONG (author) / LIU YANG (author) / DING BAIZHAN (author) / HUANG FANG (author) / CHEN SHENG (author)
2020-05-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Modification treatment method of ferronickel slag aggregate
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