金属矿山
金屬礦山
금속광산
METAL MINE
2015年
1期
54-57
,共4页
闪锌矿%铁闪锌矿%中矿返回%流程优化
閃鋅礦%鐵閃鋅礦%中礦返迴%流程優化
섬자광%철섬자광%중광반회%류정우화
Sphalerite%Marmatite%Middlings return%Process optimization
蒙古某高铁、高硫铁闪锌矿石中金属矿物主要有磁铁矿、闪锌矿、黄铁矿等，闪锌矿呈不规则粒状分布，与黄铁矿、磁铁矿等嵌布关系密切，现场采用1粗3精2扫、精选1尾矿返回至磨矿的中矿顺序返回流程选锌，生产指标偏低。为改善选锌指标，进行了选锌药剂用量及闭路流程优化前后选锌效果对比试验。结果表明，在相同药剂制度情况下，模拟现场闭路流程可取得锌品位为50．98%、回收率为91．10%的锌精矿；将现场扫选1精矿也返回磨矿的优化流程可取得锌品位为52．02%、回收率为92．39%的锌精矿，工艺流程的优化使锌精矿锌品位和锌回收率分别提高了1．04和1．29个百分点。
矇古某高鐵、高硫鐵閃鋅礦石中金屬礦物主要有磁鐵礦、閃鋅礦、黃鐵礦等，閃鋅礦呈不規則粒狀分佈，與黃鐵礦、磁鐵礦等嵌佈關繫密切，現場採用1粗3精2掃、精選1尾礦返迴至磨礦的中礦順序返迴流程選鋅，生產指標偏低。為改善選鋅指標，進行瞭選鋅藥劑用量及閉路流程優化前後選鋅效果對比試驗。結果錶明，在相同藥劑製度情況下，模擬現場閉路流程可取得鋅品位為50．98%、迴收率為91．10%的鋅精礦；將現場掃選1精礦也返迴磨礦的優化流程可取得鋅品位為52．02%、迴收率為92．39%的鋅精礦，工藝流程的優化使鋅精礦鋅品位和鋅迴收率分彆提高瞭1．04和1．29箇百分點。
몽고모고철、고류철섬자광석중금속광물주요유자철광、섬자광、황철광등，섬자광정불규칙립상분포，여황철광、자철광등감포관계밀절，현장채용1조3정2소、정선1미광반회지마광적중광순서반회류정선자，생산지표편저。위개선선자지표，진행료선자약제용량급폐로류정우화전후선자효과대비시험。결과표명，재상동약제제도정황하，모의현장폐로류정가취득자품위위50．98%、회수솔위91．10%적자정광；장현장소선1정광야반회마광적우화류정가취득자품위위52．02%、회수솔위92．39%적자정광，공예류정적우화사자정광자품위화자회수솔분별제고료1．04화1．29개백분점。
Main metallic minerals of a high iron and sulfur marmatite ore in Mongolia are mainly magnetite,sphalerite, pyrite,etc. Sphalerite is distributed in irregular granular and closely embedded with pyrite,magnetite,etc. The process of one roughing-three cleaning-two scavenging,tailings of one stage cleaning return to grinding for zinc flotation process is adopted, while the index is poor. To improve the zinc concentrate index,tests on reagent dosages of zinc flotation are made,as well as comparison tests of zinc flotation before and after process optimization. Results indicated that,zinc concentrate with zinc grade of 50. 98% and recovery of 91. 10% is obtained through simulated on-site closed circuit process,while zinc concentrate with zinc grade of 52. 02% and recovery of 92. 39% is obtained through optimized process of one scavenging concentrate also re-turned to grinding. Zinc grade and recovery are increased by 1. 04 and 1. 29 percentage points respectively through optimiza-tion.
