中鋼高爐工場鋅、鉛元素平衡探討

A Study on the Mass Balance of Zn and Pb in Ironmaking Plant at CSC

邱義豐(Y. F. Chiu) ； 葉庭芳(T. F. Yeh) ； 洪德賢(T. H. Hung) ； 郭榮賢(J. H. Kuo)

《鑛冶：中國鑛冶工程學會會刊》 37卷1期 (1993/03) Pp. 117-126

摘要

為有效管制高爐製程總鋅加入量，以避免高爐體內產生累積進而危害高爐操作，對煉鐵製程所有原、物料進行鋅含量分析與平衡計算是必要的；經分析研究後，已獲得下列數點結果：1.高爐鋅、鉛含量主要來自轉爐礦泥漿與高爐礦泥，因此煉鐵廠鋅、鉛含量最有效的管制點應為高爐礦泥脫鋅工場與轉爐礦泥漿。2.由於轉爐礦泥漿原則上希望能100%回收，因此當轉爐汚泥鋅（鉛）含量偏高時，脫鋅工場的低鋅礦泥回收率就應予降低，或是脫鋅（鉛）率調高，如此高爐總鋅加入量才不致超過管制值。3.目前三號高爐的總鋅加入量約為139 g/THM，未來低鋅礦泥全量回收時，三號高爐的總鋅加入量仍能控制在180 g/THM內，若控制得宜，亦有可能控制在理想的164 g/THM水平，此時低鋅礦泥的鋅含量為0.54%，脫鋅製程之脫鋅率平均約80%，固體回收率約66%。4.本研究已擬出高爐工場鋅、鉛元素平衡之動態計算程式，可供高爐及脫鋅工場相關人員使用。

並列摘要

For the purpose of controlling the Zn and Pb contents in the Blast Furnace (BF), the physio-chemical analysis and mass balance estimation of Zn and Pb elements in the Ironmaking plant are necessary. The results of this study are listed as follows: 1. The major input sources of Zn and Pb elements in BF system are derived from the BF and BOF sludges. 2. If Zn and Pb contents of BOF sludge become higher, the control target of Zn and Pb contents in BF sludge for De-Zn plant must be lowered to keep the total quantity of Zn and Pb elements under the controlled level. 3. At the present time, the total input quantity of Zn at the NO. 3 BF is about 139 g/THM; In case the low Zn sludges are totally added to the BF in the near future, the total Zn content can be still controlled at the level of 180 g/THM 4.A dynamic Zn and Pb mass balance model was designed to be used in the BF sludge for De-Zn plant.