湿法冶金
濕法冶金
습법야금
HYDROMETALLURGY OF CHINA
2014年
5期
394-397
,共4页
单丽梅%李志宏%王泽忠%刘国标
單麗梅%李誌宏%王澤忠%劉國標
단려매%리지굉%왕택충%류국표
氧化锌烟尘%氟%去除%铝酸钙%硫酸铝
氧化鋅煙塵%氟%去除%鋁痠鈣%硫痠鋁
양화자연진%불%거제%려산개%류산려
zinc oxide dust%fluorine%removal%calcium aluminate%aluminium sulfate
以4种含钙化合物CaCO3、CaO、Ca(OH)2及CaAl2O4为Ca源,Al2(SO4)3·7H2O为辅助剂,研究了CaF2沉淀法从高氟氧化锌浸出液中脱除氟,对比了4种含钙化合物的除氟效果,以及辅助剂的加入对除氟的影响,考察了以CaAl2 O4为Ca源配加少量硫酸铝时,温度、时间、酸度、用量对除氟效果的影响。结果表明:每L浸出液中添加5 g/L辅助剂及10 g/L CaAl2 O4,在反应温度为50~55℃、反应时间为2 h以上、pH=5.4条件下,氧化锌浸出液中的氟质量浓度从0.736 g/L降至0.351 g/L。
以4種含鈣化閤物CaCO3、CaO、Ca(OH)2及CaAl2O4為Ca源,Al2(SO4)3·7H2O為輔助劑,研究瞭CaF2沉澱法從高氟氧化鋅浸齣液中脫除氟,對比瞭4種含鈣化閤物的除氟效果,以及輔助劑的加入對除氟的影響,攷察瞭以CaAl2 O4為Ca源配加少量硫痠鋁時,溫度、時間、痠度、用量對除氟效果的影響。結果錶明:每L浸齣液中添加5 g/L輔助劑及10 g/L CaAl2 O4,在反應溫度為50~55℃、反應時間為2 h以上、pH=5.4條件下,氧化鋅浸齣液中的氟質量濃度從0.736 g/L降至0.351 g/L。
이4충함개화합물CaCO3、CaO、Ca(OH)2급CaAl2O4위Ca원,Al2(SO4)3·7H2O위보조제,연구료CaF2침정법종고불양화자침출액중탈제불,대비료4충함개화합물적제불효과,이급보조제적가입대제불적영향,고찰료이CaAl2 O4위Ca원배가소량류산려시,온도、시간、산도、용량대제불효과적영향。결과표명:매L침출액중첨가5 g/L보조제급10 g/L CaAl2 O4,재반응온도위50~55℃、반응시간위2 h이상、pH=5.4조건하,양화자침출액중적불질량농도종0.736 g/L강지0.351 g/L。
The removal of fluorine from leaching solution of zinc oxide dust using CaCO3 ,CaO , Ca(OH)2 and CaAl2 O4 respectively as Ca source and Al2 (SO4 )3 · 7H2 O as assistant was investigated . The effects of temperature ,time ,concentration of sulfuric acid ,dosage of assistant on defluorination were examined .The experimental results show that the content of fluorine can be reduced from 0 .736 g/L to 0 .351 g/L under the optimum conditions of assistant dosage of 5 g/L ,CaAl2 O4 dosage of 10 g/L ,reaction temperature of 50-55℃ ,reaction time of 2 h ,the solution pH of 5 .4 .