金属矿山
金屬礦山
금속광산
METAL MINE
2015年
2期
63-67
,共5页
张成强%张红新%李洪潮%王守敬
張成彊%張紅新%李洪潮%王守敬
장성강%장홍신%리홍조%왕수경
钽铌砂矿%矿石性质%预选工艺%综合回收
鐽鈮砂礦%礦石性質%預選工藝%綜閤迴收
단니사광%광석성질%예선공예%종합회수
Tantalum-niobium ore%Ore property%Pre-separation process%Comprehensive utilization
为了给中国某矿业公司开发非洲某钽铌砂矿提供依据,首先对该矿矿石进行了工艺矿物学研究,结果表明：矿石中钽、铌的含量分别达到了97．4 g/t和1044．2 g/t,远远超过了工业开采指标要求；有用矿物除铌铁矿外,还伴生钛铁矿、锡石、锆石以及独居石、钍石等,脉石矿物则主要为石英、长石；有用矿物嵌布粒度较粗,且基本都已经单体解离,同时它们与石英、长石的重选分离难易度处于“较易”范围；矿石中+3 mm粒级的产率达21．10%,但钽、铌在其中的分布率只有3．04%和1．33%。根据工艺矿物学研究结果,采用原矿按3 mm筛分抛尾、筛分精矿跳汰抛尾、跳汰精矿按0．5 mm分级摇床精选的工艺流程进一步进行了预选试验,获得了预选精矿产率为0．71%,Ta2 O5、Nb2 O5、Sn、ZrO2品位分别为1．21%、12．93%、7．12%、14．97%,相应回收率分别为89．45%、90．04%、87．16%、70．58%的较好指标,并使钛、钍、铪、铈也得到了富集。下一步将对预选精矿开展有用矿物互相分离的深选试验。
為瞭給中國某礦業公司開髮非洲某鐽鈮砂礦提供依據,首先對該礦礦石進行瞭工藝礦物學研究,結果錶明：礦石中鐽、鈮的含量分彆達到瞭97．4 g/t和1044．2 g/t,遠遠超過瞭工業開採指標要求；有用礦物除鈮鐵礦外,還伴生鈦鐵礦、錫石、鋯石以及獨居石、釷石等,脈石礦物則主要為石英、長石；有用礦物嵌佈粒度較粗,且基本都已經單體解離,同時它們與石英、長石的重選分離難易度處于“較易”範圍；礦石中+3 mm粒級的產率達21．10%,但鐽、鈮在其中的分佈率隻有3．04%和1．33%。根據工藝礦物學研究結果,採用原礦按3 mm篩分拋尾、篩分精礦跳汰拋尾、跳汰精礦按0．5 mm分級搖床精選的工藝流程進一步進行瞭預選試驗,穫得瞭預選精礦產率為0．71%,Ta2 O5、Nb2 O5、Sn、ZrO2品位分彆為1．21%、12．93%、7．12%、14．97%,相應迴收率分彆為89．45%、90．04%、87．16%、70．58%的較好指標,併使鈦、釷、鉿、鈰也得到瞭富集。下一步將對預選精礦開展有用礦物互相分離的深選試驗。
위료급중국모광업공사개발비주모단니사광제공의거,수선대해광광석진행료공예광물학연구,결과표명：광석중단、니적함량분별체도료97．4 g/t화1044．2 g/t,원원초과료공업개채지표요구；유용광물제니철광외,환반생태철광、석석、고석이급독거석、토석등,맥석광물칙주요위석영、장석；유용광물감포립도교조,차기본도이경단체해리,동시타문여석영、장석적중선분리난역도처우“교역”범위；광석중+3 mm립급적산솔체21．10%,단단、니재기중적분포솔지유3．04%화1．33%。근거공예광물학연구결과,채용원광안3 mm사분포미、사분정광도태포미、도태정광안0．5 mm분급요상정선적공예류정진일보진행료예선시험,획득료예선정광산솔위0．71%,Ta2 O5、Nb2 O5、Sn、ZrO2품위분별위1．21%、12．93%、7．12%、14．97%,상응회수솔분별위89．45%、90．04%、87．16%、70．58%적교호지표,병사태、토、협、시야득도료부집。하일보장대예선정광개전유용광물호상분리적심선시험。
In order to provide technical basis on development of a tantalum niobium placer in Africa for a Chinese mining company,process mineralogy research is carried out on the ore. The results indicated that,the content of tantalum and niobium reaches 97. 4 g/t and 1 044. 2 g/t respectively,much higher than the industrial mining requirements. Besides niobite and il-menite,there are useful minerals of cassiterite, zircon and monazite, thorium also associated. Gangue minerals are mainly quartz,feldspar;useful minerals are disseminated in relatively coarser size and somehow have already been liberated,and the degree of liberation from quartz and feldspar by gravity separation is"easier";yield rate of the ore in+3 mm grade account for 21. 10%,but distribution rate of tantalum and niobium is only 3. 04% and 1. 33% respectively. According to the process min-eralogy,pre-separation experiments on run-of-mine ore are made,including the run-of-mine classified at 3 mm,and the coarse concentrate discarded by jig further,then classification by 0. 5 mm and through cleaning separation by shaking table respective-ly. Pre-separation concentrate with yield rate of 0. 71%,Ta2O5,Nb2O5,Sn,ZrO2 grade of 1. 21%,12. 93%, 7. 12% and 14. 97% respectively,and the corresponding recovery rate of 89. 45%,90. 04%,87. 16%,70. 58% was obtained,meanwhile titanium, thorium, hafnium, cerium have also been enriched. Valuable minerals in pre-separation concentrate separated from each other will be further researched.
