Method for preparing porous magnesium oxide-based high-temperature ceramic by synergistically utilizing magnesite tailings and magnesia waste

The invention provides a method for preparing porous magnesium oxide-based high-temperature ceramic by synergistically utilizing magnesite tailings and magnesia waste, and belongs to the technical field of magnesium oxide-containing waste synergistically efficient utilization and high-performance porous magnesium oxide-based high-temperature ceramic preparation. The preparation method of the porous magnesium oxide-based high-temperature ceramic comprises the following steps: mixing the magnesite tailings, the magnesite waste and the pore-forming agent, carrying out ball milling, and carrying out compression molding and sintering on the mixture obtained by ball milling to obtain the porous magnesium oxide-based high-temperature ceramic. The porous MgO-based ceramic prepared by the preparation method disclosed by the invention is good in sintering performance, mechanical property and thermal shock resistance. 本发明提供了一种协同利用菱镁矿尾矿和镁砂废料制备多孔氧化镁基高温陶瓷的方法，属于含氧化镁废料协同高效利用及高性能多孔氧化镁基高温陶瓷制备技术领域。所述多孔氧化镁基高温陶瓷的制备步骤包括：将菱镁矿尾矿、镁砂废