孟南庄选煤厂工艺制定及生产实践

Preparation process establishment and production status in Mengnanzhuang coal preparation plant

阐述了孟南庄选煤厂的工艺流程及工艺特点。针对选煤厂存在的主要问题,从煤泥水沉降、干扰床床层稳定、底流管堵塞、精煤带矸4个方面提出了相应的技改措施。实践证明,技改后明显改善了旋流器分选效果,脱介效率高,介耗明显降低,干扰床分选机精煤灰分稳定,浮选精煤灰分在10%以下,浮选尾煤灰分在50%以上,达到了预定效果。

Introduce the technical process and characteristics of Mengnanzhuang coal preparation plant. In order to resolve the issues existed in plant, provide technical improvement methods from the aspect of coal slurry treatment, TBS bed layer stability, TBS undercurrent tube block, clean coal with gangue. Practical production show that after renovation, cyclone gets an obvious separation effect, and has higher de-medium effectiveness and medium consumed obviously lower, TBS clean coal ash content has little change, the ash of flotation clean coal is below 10%, the ash of flotation tailings is above 50% ,reach the intended purposes.