發(fā)布時間：2018-05-23 09:10

  本文選題：微細(xì)粒浸染型 + 金礦　； 參考：《礦冶工程》2016年01期

【摘要】：采用堿性熱壓預(yù)處理-硫代硫酸鹽浸出含碳質(zhì)微細(xì)粒浸染型極難選原生金礦,分別進(jìn)行了原礦浸金、熱壓預(yù)處理以及氧化產(chǎn)物浸金試驗,考查了各因素對預(yù)處理脫碳、脫硫以及浸金效果的影響。試驗結(jié)果表明,在磨礦細(xì)度-0.025 mm粒級占82%,預(yù)處理溫度160℃、預(yù)處理時間2 h、助氧劑TW用量300 g/t、氧壓1.6 MPa、p H=12的堿性熱壓氧化條件下以及硫代硫酸鈉用量0.12 mol/L、硫酸銨用量0.075 mol/L、硫酸銅用量0.02 mol/L、p H=9、浸出時間4 h、礦漿液固比3∶1的浸出條件下,獲得了金浸出率88.76%。通過對預(yù)處理反應(yīng)熱力學(xué)計算,以及繪制160℃下Fe-S-H2O體系Eh-p H圖,對堿性熱壓氧化預(yù)處理過程的機(jī)理進(jìn)行了初步研究,研究結(jié)果與試驗結(jié)果一致。
[Abstract]:The primary gold ore was extracted by alkaline hot pressing pretreatment and thiosulfate leaching. The primary gold ore was leached with carbonaceous fine particles. The gold leaching test of raw ore, hot pressure pretreatment and oxidation product leaching was carried out, and the decarbonization of the pretreatment was investigated by various factors. Effect of desulphurization and gold leaching. The results show that the grinding fineness of -0.025 mm is 82mm and the pretreatment temperature is 160 鈩，

本文編號：1924121