CAJ | 학술논문

分级式冲击磨是应用十分广泛的超细粉碎设备，但目前对分级式冲击磨的一些工艺参数的研究还不够充分。为了得到科学、合理的分级式冲击磨的工艺参数，本实验选用切断的玉米秸秆作为实验原料，用锤片式破碎机对其进行破碎并过筛（筛网孔径4mm），通过分级式冲击磨对粗破过筛后的玉米秸秆进行粉碎。实验考察了二次风风门开闭情况、锤头数量、锤头周向速度对玉米秸秆粉体产量及设备单位能耗的影响。实验结果表明，二次风风门全开时，粉体产量比二次风风门关闭时提高43.6%；锤头数量为8个时，粉体产量比锤头数量为4个和16个时高，单位能耗比锤头数量为4个和16个时低，但差距并不明显；锤头周向速度为130m/s时，粉体的产量比锤头周向速度为120m/s、110m/s、100m/s时高。
분급식충격마시응용십분엄범적초세분쇄설비，단목전대분급식충격마적일사공예삼수적연구환불구충분。위료득도과학、합리적분급식충격마적공예삼수，본실험선용절단적옥미갈간작위실험원료，용추편식파쇄궤대기진행파쇄병과사（사망공경4mm），통과분급식충격마대조파과사후적옥미갈간진행분쇄。실험고찰료이차풍풍문개폐정황、추두수량、추두주향속도대옥미갈간분체산량급설비단위능모적영향。실험결과표명，이차풍풍문전개시，분체산량비이차풍풍문관폐시제고43.6%；추두수량위8개시，분체산량비추두수량위4개화16개시고，단위능모비추두수량위4개화16개시저，단차거병불명현；추두주향속도위130m/s시，분체적산량비추두주향속도위120m/s、110m/s、100m/s시고。
Classify-impact mill is widely used in ultrafine grinding industry. However,current research on the process of classify-impact mill is insufficient. In order to get suitable process parameters for classify-impact mill,the cutted corn stover was used as raw material in this study. The corn stover was firstly crushed by hammer crusher with screen mesh at 4mm,then crushed by classify-impact mill. The effects of secondary air,the number of beaters,circumferential speed of beaters for yield and energy consumption per unit were discussed. The results showed that yield was improved by 43.6 percent in the present of the secondary air. The energy consumption per unit was lower than 4 beaters or 16 beaters when 8 beaters were used in the classify-impact mill,but the improvement was not significant. The yield higher was at circumferential speed of 130m/s.