中国有色金属学报(英文版)
中國有色金屬學報(英文版)
중국유색금속학보(영문판)
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2012年
3期
694-699
,共6页
熊利芝%陈启元%尹周澜%张平民%丁治英%刘志雄
熊利芝%陳啟元%尹週瀾%張平民%丁治英%劉誌雄
웅리지%진계원%윤주란%장평민%정치영%류지웅
金属锌%CaF2%催化作用%真空碳热还原%异极矿
金屬鋅%CaF2%催化作用%真空碳熱還原%異極礦
금속자%CaF2%최화작용%진공탄열환원%이겁광
metal zinc%calcium fluoride%catalysis%carbothermic reduction%hemimorphite
通过异极矿真空碳热还原试验,研究添加CaF2和对碳热还原硅酸锌的的影响.结果表明:CaF2能催化硅酸锌的碳热还原,降低还原温度,缩短反应时间;温度越低,催化效果越好;CaF2的添加量越多,催化效果越明显.CaF2催化真空碳热还原异极矿的较佳工艺条件是:CaF2的添加量约10%,还原蒸馏温度1373 K,C/Zn 总的物质的量比2.5,系统压强低于20 kPa,反应时间约40min.在较佳工艺条件下,异极矿中约93%的锌被还原蒸馏出来.
通過異極礦真空碳熱還原試驗,研究添加CaF2和對碳熱還原硅痠鋅的的影響.結果錶明:CaF2能催化硅痠鋅的碳熱還原,降低還原溫度,縮短反應時間;溫度越低,催化效果越好;CaF2的添加量越多,催化效果越明顯.CaF2催化真空碳熱還原異極礦的較佳工藝條件是:CaF2的添加量約10%,還原蒸餾溫度1373 K,C/Zn 總的物質的量比2.5,繫統壓彊低于20 kPa,反應時間約40min.在較佳工藝條件下,異極礦中約93%的鋅被還原蒸餾齣來.
통과이겁광진공탄열환원시험,연구첨가CaF2화대탄열환원규산자적적영향.결과표명:CaF2능최화규산자적탄열환원,강저환원온도,축단반응시간;온도월저,최화효과월호;CaF2적첨가량월다,최화효과월명현.CaF2최화진공탄열환원이겁광적교가공예조건시:CaF2적첨가량약10%,환원증류온도1373 K,C/Zn 총적물질적량비2.5,계통압강저우20 kPa,반응시간약40min.재교가공예조건하,이겁광중약93%적자피환원증류출래.
Zn reduction was investigated by the vacuum carbothermic reduction of hemimorphite with or without CaF2 as catalyst.Results indicate that CaF2 can catalyze the carbothermie reduction of zinc silicate,decrease the reaction temperature and time.The lower the reaction temperature and the more the amount of CaF2,the better the catalytic effect.The optimal process condition is obtained as follows:the addition of about 10% CaF2,the reaction temperature of 1373 K,the molar ratio of C to ZnTotal of 2.5,the pressure of system lower than 20 kPa,the reaction time of about 40 min.Under the optimal process condition,the zinc reduction rate is about 93% from hemimorphite.