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Method for preparing regenerated magnesia carbon brick by using used magnesia carbon brick
The invention relates to a method for preparing regenerated magnesia carbon bricks by using used magnesia carbon bricks, and solves the technical problems of large reserves and difficult recovery of the used magnesia carbon bricks based on the concept of environmental protection. The method mainly comprises the following steps: (1) putting the used magnesia carbon bricks into a jaw crusher and a vibration mill for pretreatment, and screening to obtain particles of 3-5mm, 1-3mm, 0.074-1mm and 200 meshes; (2) uniformly mixing the particles of 3-5mm and 1-3mm obtained in the step (1), adding a sucrose solution, continuously stirring, coating crystalline flake graphite, finally adding a fine powder mixture (0.074-1mm and 200-mesh recycled particles, fused magnesia and metal silicon powder arefully mixed), and stirring to obtain a mixture; and (3) carrying out dry pressing molding on the mixture obtained in the step (2), and curing in a drying oven at 200 DEG C for 24 hours to obtain a regenerated magnesia carbon brick sample. According to the invention, the used magnesia carbon bricks with high mixing amount are used for replacing most magnesia resources, sucrose is used as an environment-friendly binding agent, and the regenerated brick has the advantages of high compressive strength, low cost, easiness in material mixing, easiness in molding and the like.
本发明系一种利用用后镁碳砖制备再生镁碳砖的方法，基于绿色环保的理念解决用后镁碳砖储量大、回收难的技术问题。主要包括如下几个步骤：(1)将用后镁碳砖放入颚式破碎机及振动磨中预处理，经筛分得到3～5mm、1～3mm、0.074～1mm及200目的颗粒。(2)将步骤(1)得到的3～5mm、1～3mm颗粒混合均匀后加入蔗糖溶液继续搅拌，再包裹鳞片石墨，最后加入细粉混合物(0.074～1mm及200目回收颗粒、电熔镁砂、金属硅粉充分混合)搅拌得到混合料。(3)将步骤(2)得到的混合料通过干压成型后置于干燥箱中在200℃下固化24h，得到再生镁碳砖样品。本发明以高掺量的用后镁碳砖代替大部分镁砂资源，以蔗糖作为环保型结合剂，再生砖具有抗压强度高、成本低、易混料、易成型等优点。
Method for preparing regenerated magnesia carbon brick by using used magnesia carbon brick
The invention relates to a method for preparing regenerated magnesia carbon bricks by using used magnesia carbon bricks, and solves the technical problems of large reserves and difficult recovery of the used magnesia carbon bricks based on the concept of environmental protection. The method mainly comprises the following steps: (1) putting the used magnesia carbon bricks into a jaw crusher and a vibration mill for pretreatment, and screening to obtain particles of 3-5mm, 1-3mm, 0.074-1mm and 200 meshes; (2) uniformly mixing the particles of 3-5mm and 1-3mm obtained in the step (1), adding a sucrose solution, continuously stirring, coating crystalline flake graphite, finally adding a fine powder mixture (0.074-1mm and 200-mesh recycled particles, fused magnesia and metal silicon powder arefully mixed), and stirring to obtain a mixture; and (3) carrying out dry pressing molding on the mixture obtained in the step (2), and curing in a drying oven at 200 DEG C for 24 hours to obtain a regenerated magnesia carbon brick sample. According to the invention, the used magnesia carbon bricks with high mixing amount are used for replacing most magnesia resources, sucrose is used as an environment-friendly binding agent, and the regenerated brick has the advantages of high compressive strength, low cost, easiness in material mixing, easiness in molding and the like.
本发明系一种利用用后镁碳砖制备再生镁碳砖的方法，基于绿色环保的理念解决用后镁碳砖储量大、回收难的技术问题。主要包括如下几个步骤：(1)将用后镁碳砖放入颚式破碎机及振动磨中预处理，经筛分得到3～5mm、1～3mm、0.074～1mm及200目的颗粒。(2)将步骤(1)得到的3～5mm、1～3mm颗粒混合均匀后加入蔗糖溶液继续搅拌，再包裹鳞片石墨，最后加入细粉混合物(0.074～1mm及200目回收颗粒、电熔镁砂、金属硅粉充分混合)搅拌得到混合料。(3)将步骤(2)得到的混合料通过干压成型后置于干燥箱中在200℃下固化24h，得到再生镁碳砖样品。本发明以高掺量的用后镁碳砖代替大部分镁砂资源，以蔗糖作为环保型结合剂，再生砖具有抗压强度高、成本低、易混料、易成型等优点。
Method for preparing regenerated magnesia carbon brick by using used magnesia carbon brick
一种利用用后镁碳砖制备再生镁碳砖的方法
WU XIAOWEN (author) / ZHANG YUENA (author) / CHI PENG (author) / SHEN CAN (author) / LIU YANGAI (author) / HUANG ZHAOHUI (author) / FANG MINGHAO (author) / MIN XIN (author)
2021-03-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
METHOD OF PRODUCING MAGNESIA-CARBON BRICK AND MAGNESIA-CARBON BRICK
| European Patent Office | 2015