strong structure, stable operation rotary waelz kiln 1.more safe for workers 2.low consumption 3.professional ... materials will includes 1,Raw materials Preparation, dosing, pelletizing (if need); 2,Oxidizing roasting and reduction in rotary kiln; 3,Slag ... widely used in metallurgical, chemical, construction and other industries.rotary kilns have strong structures, stable operations and high-quality ...