Metallurgical slag particle waste heat catalyzed brown coal dry distillation quality improvement method

The invention discloses a metallurgical slag particle waste heat catalyzed brown coal dry distillation quality improvement method. The method comprises the following steps: crushing brown coal to form brown coal powder, and granulating liquid metallurgical slag to form solid metallurgical slag particles; and mixing the brown coal powder with the metallurgical slag particles, and carrying out dry distillation on the brown coal powder. The method adopting the above scheme solves the problems of poor metallurgical slag waste heat recovery efficiency and poor quality, and also solves the problem of repeated heating of a solid heat carrier in the brown coal dry distillation quality improvement process. The method greatly improves the yield of light oil and gas, and also has the advantages of very simple process, very simple production enforcement and very simple use operation.