【摘要】：研究了以鋅礦提鋅過(guò)程中產(chǎn)生的廢渣為原料,采用水浸的濕法工藝,浸取液凈化除雜生產(chǎn)硫酸鋅產(chǎn)品;水浸渣經(jīng)煅燒、脫硅制備氧化鐵紅的新工藝。通過(guò)實(shí)驗(yàn)確定的最佳工藝條件:1)硫酸鋅制備工序:水浸時(shí)間為1.5 h,溫度為70~80℃,液固比m(水)∶m(廢渣)=0.8∶1,氧化劑雙氧水的用量為10 m L/L,置換助劑鋅粉的用量為2 g/L;2)氧化鐵紅制備工藝條件:煅燒溫度為635℃,煅燒時(shí)間為1.25 h,氫氧化鈉濃度為12 mol/L,堿浸溫度為120℃,堿浸時(shí)間為2.0 h,在上述條件下制得的鐵紅產(chǎn)品中氧化鐵質(zhì)量分?jǐn)?shù)為82.61%。該工藝具有資源利用充分,產(chǎn)品附加值高,環(huán)境污染小,工藝簡(jiǎn)單等優(yōu)點(diǎn)。
[Abstract]:A new process of producing zinc sulfate from waste residue produced in zinc extraction process by using wet process of water leaching and purification of leaching solution to produce zinc sulphate was studied, and the new process of preparing iron oxide red by desilication of leaching slag was studied. The optimum technological conditions determined by experiments are: 1: 1) preparation process of zinc sulfate: water immersion time is 1.5 h, temperature is 70 ~ 80 鈩，

本文編號(hào)：2261567