頁籤選單縮合
題名 | 排列位置對熔融還原爐底耐火材沖蝕影響之水模研究=Effect of the Placement of Tuyere on Refractory Erosion of Smelting Reduction Vessel-Water Model Experiments |
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作者 | 蘇朝正; 周兆民; 劉世賢; 蔡辛慈; Su, C. J.; Chou, J. M.; Liu, S. H.; Tsai, S. J.; |
期刊 | 鑛冶 |
出版日期 | 20041200 |
卷期 | 48:4=188 2004.12[民93.12] |
頁次 | 頁102-108 |
分類號 | 454.81 |
語文 | chi |
關鍵詞 | 熔融還原爐耐火材沖蝕; Smelting; Reduction vessel; Refractory erosion; |
中文摘要 | The water model was adopted to physically simulate the bottom gas stirring inside the smelting reduction ironmaking furnace. The water model experiments were conducted to investigate the erosion of the bottom refractory lining near the tuyere tip under different gas bottom blowing conditions. In experiments, the major parameters were gas flow rate, and inside diameter and placement of bottom blowing tuyere. In the preliminary experiments, it was indicated that the erosion rate of specimens near tuyere tip decreased with decreasing the gas flow rate. In the case of the square-corners placement of four bottom blowing tuyeres, the lowest erosion rate of boric acid specimens was found at 10 mm tuyere in the inner diameter range of 6.0 to 15.0mm. In the case of triangle-corners-center placement of four bottom blowing tuyeres, the lowest erosion rate of boric acid specimens was found at 15 mm tuyere. If was shown that, the erosion rate. In the case of the square-corners placement of four bottom blowing tuyeres, the lowest erosion rate of boric acid specimens was found at 10 mm tuyere in the inner diameter range of 6.0 to 15.0mm. In was shown that, the erosion rate of the triangle-corners-center case placement is lower than the square-corners placement under the same bottom blowing condition for the lowest erosion rate of refractory lining are bottom blowing gas flow rate of each tuyere at 80NL/min¸ inner diameter of tuyere at 10.0mm and the square-corners placement of four bottom blowing tuyeres in the range of experimental parameters described above. |
英文摘要 | 本研究係利用水模模擬實驗,探討氣體底吹條件對熔融還原煉鐵爐底耐火材內襯沖蝕之影響,實驗參數有底吹管氣體流量、底吹管口徑和底吹管排列方式。 沖蝕率隨著氣體流量減少而降低,即耐火材沖蝕越輕微。在管對試片沖蝕率影響方面,四支底吹管以正三角-中心對稱位置列,則試片沖蝕率隨管徑增加而減小;四支底吹管以正四角對稱位置排列,則發現試片沖蝕情況最輕微之管徑為10mm。除了10mm底吹管口徑外,實驗結果並顯示底吹管以正三角-中心對稱排列較正四角對稱排列者對試片沖蝕較為輕微。在上述模擬實驗條件範圍內,氣體底吹對耐火材模擬試片沖蝕率最低的條件組合為:四支吹管以正四角對稱排列,氣體流量為80NL/min,管徑10mm。 |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。