矿产保护与利用
礦產保護與利用
광산보호여이용
CONSERVATION AND UTILIZATION OF MINERAL RESOURCES
2013年
1期
28-31
,共4页
含铜金精矿%焙烧%酸浸%萃取
含銅金精礦%焙燒%痠浸%萃取
함동금정광%배소%산침%췌취
gold concentrate containing copper%roasting%acid leaching%extraction
针对某含铜金精矿，研究了焙烧-酸浸-萃取回收铜工艺。结果表明，在焙烧温度650℃，焙砂在初酸浓度为35 g/L、液固比1．5∶1，浸出温度90℃，浸出时间1．5 h的条件下，铜浸出率高达96．30％，酸浸渣铜品位可降至0．2％以下；萃取剂浓度为20％，相比O/A＝2∶1，混合时间为4 min，pH值1．5，铜萃取率可达96％以上，实现了铜的高效回收。
針對某含銅金精礦，研究瞭焙燒-痠浸-萃取迴收銅工藝。結果錶明，在焙燒溫度650℃，焙砂在初痠濃度為35 g/L、液固比1．5∶1，浸齣溫度90℃，浸齣時間1．5 h的條件下，銅浸齣率高達96．30％，痠浸渣銅品位可降至0．2％以下；萃取劑濃度為20％，相比O/A＝2∶1，混閤時間為4 min，pH值1．5，銅萃取率可達96％以上，實現瞭銅的高效迴收。
침대모함동금정광，연구료배소-산침-췌취회수동공예。결과표명，재배소온도650℃，배사재초산농도위35 g/L、액고비1．5∶1，침출온도90℃，침출시간1．5 h적조건하，동침출솔고체96．30％，산침사동품위가강지0．2％이하；췌취제농도위20％，상비O/A＝2∶1，혼합시간위4 min，pH치1．5，동췌취솔가체96％이상，실현료동적고효회수。
Focusing on a refractory gold concentrate containing copper , a process of roasting -acid leaching -extraction was applied and the optimum conditions were found .Test results show that the Cu leaching rate was 96.30%, and the copper grade of acid -leach residue was lower than 0 .2%.the concentrate was roasted 2 h at 650 ℃, and leached with 35 g/L sulfuric acid at 90 ℃for 1.5 h, with the liquid-solid ratio being 1.5 ∶1.Copper was then extracted from the lixivium at optimal condition .The extraction agent concentration was 20% and O/A ratio was 2 ∶1 , with the mixing time being 4 min and pH value being 1.5.The extraction rate of copper was above 96%.The copper element was recoveried effectively using the process .
