500kg site uses low cement pan mixer refractory castable mixer is specially designed for mixing refractories, castables, etc. during refractory installation work. Different from ordinary mixers, the bottom and inner wall of the 500kg site use low cement pan mixer refractory castable mixers composed of wear-resistant lining plates and wear-resistant stirring blades, which greatly prolong the service life. Five mixing arms are used for different purposes, for the bottom, walls, and shafts of the mixing barrel.