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Heat-insulating refractory material prepared from hazardous waste and preparation method of heat-insulating refractory material
The invention particularly relates to a heat-insulating refractory material prepared from hazardous waste and a preparation method of the heat-insulating refractory material, belonging to the technical field of comprehensive utilization of industrial hazardous waste. The method comprises the following steps: carrying out primary water washing pretreatment on secondary aluminum ash to obtain pretreated secondary aluminum ash; subjecting recycled aluminum fly ash to secondary washing pretreatment to obtain pretreated recycled aluminum fly ash; mixing the pretreated secondary aluminum ash, the pretreated recycled aluminum fly ash and silicon-based-rich solid waste, and then carrying out ball milling to obtain a mixed raw material; adding water into the mixed raw material, conducting stirring to obtain a wet raw material, carrying out foaming molding on the wet raw material, and then carrying out drying to obtain a green body; and sintering the green body to obtain the heat-insulating refractory material. According to the invention, element resources such as aluminum, carbon and silicon in the secondary aluminum ash and the fly ash are cooperatively and complementarily utilized, and the secondary aluminum ash and the fly ash are converted into the heat-insulating refractory material, so the problem of hazardous waste in the aluminum industry is solved, and high-value utilization of the secondary aluminum ash and the fly ash is realized.
本发明特别涉及一种以危废制备的保温耐火材料及其制备方法，属于工业危废综合利用技术领域，方法包括：将二次铝灰进行第一水洗预处理，得到预处理二次铝灰；将再生铝除尘灰进行第二水洗预处理，得到预处理再生铝除尘灰；将所述预处理二次铝灰、所述预处理再生铝除尘灰和富硅基固废进行混合，后进行球磨，得到混合生料；将所述混合生料进行加水搅拌，得到湿生料将所述湿生料进行发泡成型，后进行烘干，得到生坯；将所述生坯进行烧结，得到保温耐火材料；协同互补利用二次铝灰和除尘灰中铝、碳、硅等元素资源，将二次铝灰及除尘灰转化成保温耐火材料，解决铝工业危废问题的同时，实现二次铝灰及除尘灰的高值化利用。
Heat-insulating refractory material prepared from hazardous waste and preparation method of heat-insulating refractory material
The invention particularly relates to a heat-insulating refractory material prepared from hazardous waste and a preparation method of the heat-insulating refractory material, belonging to the technical field of comprehensive utilization of industrial hazardous waste. The method comprises the following steps: carrying out primary water washing pretreatment on secondary aluminum ash to obtain pretreated secondary aluminum ash; subjecting recycled aluminum fly ash to secondary washing pretreatment to obtain pretreated recycled aluminum fly ash; mixing the pretreated secondary aluminum ash, the pretreated recycled aluminum fly ash and silicon-based-rich solid waste, and then carrying out ball milling to obtain a mixed raw material; adding water into the mixed raw material, conducting stirring to obtain a wet raw material, carrying out foaming molding on the wet raw material, and then carrying out drying to obtain a green body; and sintering the green body to obtain the heat-insulating refractory material. According to the invention, element resources such as aluminum, carbon and silicon in the secondary aluminum ash and the fly ash are cooperatively and complementarily utilized, and the secondary aluminum ash and the fly ash are converted into the heat-insulating refractory material, so the problem of hazardous waste in the aluminum industry is solved, and high-value utilization of the secondary aluminum ash and the fly ash is realized.
本发明特别涉及一种以危废制备的保温耐火材料及其制备方法，属于工业危废综合利用技术领域，方法包括：将二次铝灰进行第一水洗预处理，得到预处理二次铝灰；将再生铝除尘灰进行第二水洗预处理，得到预处理再生铝除尘灰；将所述预处理二次铝灰、所述预处理再生铝除尘灰和富硅基固废进行混合，后进行球磨，得到混合生料；将所述混合生料进行加水搅拌，得到湿生料将所述湿生料进行发泡成型，后进行烘干，得到生坯；将所述生坯进行烧结，得到保温耐火材料；协同互补利用二次铝灰和除尘灰中铝、碳、硅等元素资源，将二次铝灰及除尘灰转化成保温耐火材料，解决铝工业危废问题的同时，实现二次铝灰及除尘灰的高值化利用。
Heat-insulating refractory material prepared from hazardous waste and preparation method of heat-insulating refractory material
一种以危废制备的保温耐火材料及其制备方法
LIU ZHONGKAI (author) / KANG ZESHUANG (author) / YAN KUN (author) / TIAN YE (author) / FAN ZEKUN (author)
2021-12-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2023
| European Patent Office | 2024
Heat-insulating refractory material and preparation method thereof
European Patent Office | 2021