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1、---------------------------------------------------------------范文最新推薦------------------------------------------------------濕法冶煉廢舊鋅錳干電池回收工藝研究摘要:本文以廢舊鋅錳干電池為原料,采用濕法冶煉技術(shù)對(duì)廢舊電池中的鋅、錳兩種金屬元素進(jìn)行回收再利用,主要研究的是不同條件下金屬的回收率。實(shí)驗(yàn)結(jié)果表明:取5.64g鋅片,在室溫下用35ml3mol/L的H2SO4溶解,再用2mol/L的Na
2、OH調(diào)pH得Zn(OH)2沉淀,沉淀過(guò)濾洗滌后用1mol/L的H2SO4調(diào)pH=4并滴加3%的H2O21ml,抽濾除去Fe(OH)3,用1mol/L的H2SO4調(diào)pH=2后蒸發(fā)結(jié)晶所得ZnSO4•7H2O產(chǎn)量最高為18.53g;取碳包4.45g,用40ml1:1的HCl浸取,用NH3•H2O調(diào)節(jié)pH為5~6,抽濾除去Fe(OH)3,再用Na2CO3調(diào)節(jié)pH7~8,加熱至80℃后抽濾得MnCO321/22---------------------------------------------
3、------------------范文最新推薦------------------------------------------------------濕法冶煉廢舊鋅錳干電池回收工藝研究摘要:本文以廢舊鋅錳干電池為原料,采用濕法冶煉技術(shù)對(duì)廢舊電池中的鋅、錳兩種金屬元素進(jìn)行回收再利用,主要研究的是不同條件下金屬的回收率。實(shí)驗(yàn)結(jié)果表明:取5.64g鋅片,在室溫下用35ml3mol/L的H2SO4溶解,再用2mol/L的NaOH調(diào)pH得Zn(OH)2沉淀,沉淀過(guò)濾洗滌后用1mol/L的H2SO4調(diào)pH=4并滴加3
4、%的H2O21ml,抽濾除去Fe(OH)3,用1mol/L的H2SO4調(diào)pH=2后蒸發(fā)結(jié)晶所得ZnSO4•7H2O產(chǎn)量最高為18.53g;取碳包4.45g,用40ml1:1的HCl浸取,用NH3•H2O調(diào)節(jié)pH為5~6,抽濾除去Fe(OH)3,再用Na2CO3調(diào)節(jié)pH7~8,加熱至80℃后抽濾得MnCO321/22---------------------------------------------------------------范文最新推薦---------------------
5、---------------------------------4.76g,4408關(guān)鍵詞:鋅錳干電池;回收;濕法冶煉;ZnSO4•7H2O;MnCO3Theresearchofrecyclingprocessofwastezinc-manganesebatteriesAbstract:Thisarticleisstudyingtherecoveriesofmetalfromwastebatteriesunderdifferentconditions.Usingthewastezinc-mangan
6、esebatteriesasrawmaterialandthehydrometallurgicaltechnologytorecyclezinc,manganese.Theexperimentalresultsshowedthat:Take5.64gzinctabletsatroomtemperaturewith35mlof3mol/LH2SO4dissolved,use2mol/LNaOHtoadjustthepHandgettheZn(OH)2precipitate,thenuse1mol/LH2SO4to
7、adjustpHat4andadd1mlof3%H2O2aftertheprecipitateisfilteredandwatered,andthenfilterandremoveoftheFe(OH)3precipitate,thenuse1mol/LH2SO4toadjustpHat2andevaporateandcrystalfortheZnSO4•7H2Oat18.53g;Takecarbon-coated4.35gwith40ml1:1HClleaching,thenadjustthepHt
8、o5~6withNH3•H2O,andthenfilterandremoveofthe21/22---------------------------------------------------------------范文最新推薦------------------------------------------------------Fe(OH)3precipitate