烧结矿布料机结构与其偏析实验分析.DOC

燒結礦佈料機結構與其偏析實驗分析 Experimental analysis of sinter distributor structure and its segregation effect 研究生：朱峻賢 ChuJun-Hsien 指導教授：梁智創 Leong, Jik-Chang 【摘要】 燒結場生產燒結礦後經燒結礦冷卻機(sinter cooler)冷卻，再由輸送帶運送到高爐。當燒結礦進入輸送皮帶時，溫度不宜太高否則輸送帶容易因高溫而損壞。而目前中鋼佈料機之問題在於一號燒結機佈料不均導致冷風無法均勻滲透到每一塊燒結礦表面所以冷卻機的效率不佳。燒結礦燒結礦有鑒於此，為改善佈料不均狀況，有效地佈料冷卻燒結礦燒結礦燒結礦燒結礦°-35°為較佳的角度，因為在這角度範圍內燒結礦不易殘留且能較大化3種尺寸燒結礦偏析的距離。之後本研究也對改變佈料機內構造參數作探討，將現有佈料機設備參數做調整及搭配，模擬實際佈料機的料流狀況並探討料堆分佈對其透氣性產生體積流率之結果。研究結果發現，調整佈料機內進料側的斜板及右側的擋板角度，加上出料孔的圓弧擋板可以改變佈料的顆粒排列結構進而讓冷卻機載具的透氣性能增加。而佈料機內部較佳設定參數θ135°及40°，θ2為50°以及出料孔圓弧為0.5r。 關鍵字：After sinters are produced in the sinter plant, they are sent to the sinter cooler to cool down. After then, they are sent to the blast furnace via conveyor belts. When the sinters are sent into the conveyor belt, its temperature should not be too high. Otherwise, the conveyor belt can be easily destroyed because of the high temperature. China Steel Corporation is currently facing a problem in which the sinters from the #1 sinter plant are not distributed evenly in the sinter cooler. This causes the cooling air unable to evenly reach the surface of each sinter. Therefore, the cooling efficiency of the sinter cooler is not good enough. At this moment, sinters of larger size are mostly distributed at the inner side of the sinter cooler while those of smaller size are on the outer side. The distribution of sinters within the sinter cooler is apparently uneven. For this reason, this study aims to achieve more even sinter distribution and hence improve the cooling efficiency of the sinter cooler by firstly investigating the plate parameters in the sinter distributor and then providing suggestions for #1 sinter distributor improvement so that the cooling efficiency of the sinter cooler can be increased. This study built an experimental rig having a scaling factor of 1:5 and then another of 1:10. Based on the sinters China Steel Corporation supplied, sinters of three different sizes were selected and went through a sint