金属矿山
金屬礦山
금속광산
METAL MINE
2015年
6期
87-91
,共5页
多金属硫化矿%低碱度%高效铜银选择性捕收剂ZA%铜硫分离
多金屬硫化礦%低堿度%高效銅銀選擇性捕收劑ZA%銅硫分離
다금속류화광%저감도%고효동은선택성포수제ZA%동류분리
Copper-tin-silver-sulfur mine%Low alkalinity%High selective collector ZA of silver and copper%Copper and sulphur separation
西南某多金属硫化矿主要有价元素为铜、锡、硫,铜品位为1．05%、锡品位为0．28%、硫品位为7．19%,伴生银品位为13．20 g/t。铜主要以硫化铜形式存在,占有率为93．60%。现场采用铜硫混合浮选—铜硫分离浮选、浮选尾矿摇床重选选锡的浮重联合流程综合回收矿石中的铜硫银锡(银进入铜精矿),存在石灰用量偏大,碱度高,铜和银回收率偏低的问题。为探索低碱度浮选回收铜银的可能性,以复配药剂ZA为铜矿物捕收剂进行了试验研究。结果表明：将磨矿细度为-0．074 mm占75%条件下以硫酸铜为活化剂、丁基黄药为捕收剂,经1粗2精2扫铜硫混合浮选获得的铜硫混合精矿,以石灰为抑制剂在再磨细度为-0．043 mm占85%、pH=10．5的低碱条件下经1粗3精2扫铜硫分离,最终获得了铜品位为25．16%、银品位为212．2 g/t,铜、银回收率分别为91．75%、61．18%的铜精矿及硫品位35．32%、硫回收率79．08%的硫精矿,有效地实现了矿石中铜银硫的分离富集回收,尤其是强化了游离银的选矿富集。试验结果对伴生贵金属硫化矿中贵金属的综合回收具有借鉴意义。
西南某多金屬硫化礦主要有價元素為銅、錫、硫,銅品位為1．05%、錫品位為0．28%、硫品位為7．19%,伴生銀品位為13．20 g/t。銅主要以硫化銅形式存在,佔有率為93．60%。現場採用銅硫混閤浮選—銅硫分離浮選、浮選尾礦搖床重選選錫的浮重聯閤流程綜閤迴收礦石中的銅硫銀錫(銀進入銅精礦),存在石灰用量偏大,堿度高,銅和銀迴收率偏低的問題。為探索低堿度浮選迴收銅銀的可能性,以複配藥劑ZA為銅礦物捕收劑進行瞭試驗研究。結果錶明：將磨礦細度為-0．074 mm佔75%條件下以硫痠銅為活化劑、丁基黃藥為捕收劑,經1粗2精2掃銅硫混閤浮選穫得的銅硫混閤精礦,以石灰為抑製劑在再磨細度為-0．043 mm佔85%、pH=10．5的低堿條件下經1粗3精2掃銅硫分離,最終穫得瞭銅品位為25．16%、銀品位為212．2 g/t,銅、銀迴收率分彆為91．75%、61．18%的銅精礦及硫品位35．32%、硫迴收率79．08%的硫精礦,有效地實現瞭礦石中銅銀硫的分離富集迴收,尤其是彊化瞭遊離銀的選礦富集。試驗結果對伴生貴金屬硫化礦中貴金屬的綜閤迴收具有藉鑒意義。
서남모다금속류화광주요유개원소위동、석、류,동품위위1．05%、석품위위0．28%、류품위위7．19%,반생은품위위13．20 g/t。동주요이류화동형식존재,점유솔위93．60%。현장채용동류혼합부선—동류분리부선、부선미광요상중선선석적부중연합류정종합회수광석중적동류은석(은진입동정광),존재석회용량편대,감도고,동화은회수솔편저적문제。위탐색저감도부선회수동은적가능성,이복배약제ZA위동광물포수제진행료시험연구。결과표명：장마광세도위-0．074 mm점75%조건하이류산동위활화제、정기황약위포수제,경1조2정2소동류혼합부선획득적동류혼합정광,이석회위억제제재재마세도위-0．043 mm점85%、pH=10．5적저감조건하경1조3정2소동류분리,최종획득료동품위위25．16%、은품위위212．2 g/t,동、은회수솔분별위91．75%、61．18%적동정광급류품위35．32%、류회수솔79．08%적류정광,유효지실현료광석중동은류적분리부집회수,우기시강화료유리은적선광부집。시험결과대반생귀금속류화광중귀금속적종합회수구유차감의의。
Main valuable elements of a polymetallic sulphide ore in Southwest China is mainly copper, tin and sulphur with grade of 1. 05%, 0. 28% and 7. 19%, respectively, associated silver grade is 13. 20 g/t. Copper mainly exists in form of copper sulfide, accounted for 93. 60%. Copper and sulphur bulk flotation-copper and sulphur separation, tin concentration from tailings of flotation by shaking table was used by on-site process, all of copper, sulfur, silver and tin were comprehen-sively recovered ( silver went with copper) . The process comes with large consumption of lime, high alkalinity, low recovery of copper and silver. In order to find the possibility of effective recover copper and silver with low alkalinity, compound new type ZA collector for copper mineral flotation collector were studied The results show that:copper-sulphur rough concentrate can be obtained at the grinding fineness of 75% passing 0. 074 mm, with copper sulfate as activator, butyl xanthate as collector, via one roughing, two cleaning, two scavenging copper-sulphur bulk flotation. After reground the rough concentrate to 85%-0. 043 mm, using compound collector ZA as copper collector, lime as inhibitor, with low alkalinity conditions of pH=10. 5 through one roughing, three cleaning, three scavenging copper and sulphur separation process, copper concentrate assaying 25. 16% Cu and 212. 2 g/t Ag at the recoveries of 91. 75% and 61. 18%, respectively; and the sulphur concentrate contai-ning 35. 32% S and recovery of 79. 06% can be obtained. The results realize the separation and enrichment recovery of cop-per, sulphur and silver in the ore, especially intensify beneficiation enrichment of free silver. The test results can provide technique basis for beneficiation of minerals associated precious metals.
