有色金属科学与工程
有色金屬科學與工程
유색금속과학여공정
JIANGXI NONFERROUS METALS
2014年
1期
30-36
,共7页
闪速连续炼铜%炉型结构%数值模拟%热力学模型
閃速連續煉銅%爐型結構%數值模擬%熱力學模型
섬속련속련동%로형결구%수치모의%열역학모형
flash continuous smelting%furnace structure%numerical simulation%thermodynamic model
通过分析带渣吹炼单烟道(A型)、甩渣吹炼单烟道(B型)、带渣吹炼双烟道(C型)、甩渣吹炼双烟道(D型)等4种炉型的特点,将闪速连续炼铜过程视为由相对独立的闪速造锍熔炼过程和连续吹炼造铜过程构成,分别建立了闪速造锍熔炼多相平衡数学模型和连续吹炼造铜局域平衡数学模型,并通过中间物料的传递将2模型有机结合,从而构建了完整的闪速连续炼铜过程热力学模型。运用此模型,考察了炉型结构对闪速连续炼铜过程的粗铜生成热力学条件、Fe3O4行为、渣含铜及熔炼直收率的影响。结果表明,D型炉是比较理想的连续炼铜炉体;对于闪速连续炼铜,造锍熔炼段和铜锍吹炼段宜在相对独立的分区进行,各自烟气也应分开排出炉体。
通過分析帶渣吹煉單煙道(A型)、甩渣吹煉單煙道(B型)、帶渣吹煉雙煙道(C型)、甩渣吹煉雙煙道(D型)等4種爐型的特點,將閃速連續煉銅過程視為由相對獨立的閃速造锍鎔煉過程和連續吹煉造銅過程構成,分彆建立瞭閃速造锍鎔煉多相平衡數學模型和連續吹煉造銅跼域平衡數學模型,併通過中間物料的傳遞將2模型有機結閤,從而構建瞭完整的閃速連續煉銅過程熱力學模型。運用此模型,攷察瞭爐型結構對閃速連續煉銅過程的粗銅生成熱力學條件、Fe3O4行為、渣含銅及鎔煉直收率的影響。結果錶明,D型爐是比較理想的連續煉銅爐體;對于閃速連續煉銅,造锍鎔煉段和銅锍吹煉段宜在相對獨立的分區進行,各自煙氣也應分開排齣爐體。
통과분석대사취련단연도(A형)、솔사취련단연도(B형)、대사취련쌍연도(C형)、솔사취련쌍연도(D형)등4충로형적특점,장섬속련속련동과정시위유상대독립적섬속조류용련과정화련속취련조동과정구성,분별건립료섬속조류용련다상평형수학모형화련속취련조동국역평형수학모형,병통과중간물료적전체장2모형유궤결합,종이구건료완정적섬속련속련동과정열역학모형。운용차모형,고찰료로형결구대섬속련속련동과정적조동생성열역학조건、Fe3O4행위、사함동급용련직수솔적영향。결과표명,D형로시비교이상적련속련동로체;대우섬속련속련동,조류용련단화동류취련단의재상대독립적분구진행,각자연기야응분개배출로체。
According to the common feature of four kinds of furnaces , including type A furnace with single flue but no slag partition wall, type B furnace with single flue and a slag partition wall, type C furnace with double flues but no slag partition wall and type D furnace with double flues and a slag partition wall , the copper flash continuous smelting furnace was considered as a synthesis reactor of two relatively independent processes:flash matte smelting process (FMSP) and copper continuous converting process (CCCP), and then the ther-modynamic model of the copper flash continuous smelting process was developed by establishing the multi-phase equilibrium model of FMSP and the local-equilibrium model of CCCP and combining them through the smelting intermediate product. Based on the thermodynamic model , the influences of the furnace structures were investigated on the thermodynamic formation condition of blister copper , the Fe3O4 behavior, the copper content in slag and the recovery rate of copper. Results show that the type D furnace is an ideal reactor for copper flash continuous smelting, and hence, it’s effective to keep the FMSP and the CCCP in relatively in-dependent partitions and to make their gases discharge out of the furnace from respective flues.