岩矿测试
巖礦測試
암광측시
ROCK AND MINERAL ANALYSIS
2014年
3期
345-352
,共8页
谢海云%叶群杰%周平%高利坤%庄故章%童雄
謝海雲%葉群傑%週平%高利坤%莊故章%童雄
사해운%협군걸%주평%고리곤%장고장%동웅
铜锌硫化矿%工艺矿物学%矿物解离分析系统( MLA)%云南思茅
銅鋅硫化礦%工藝礦物學%礦物解離分析繫統( MLA)%雲南思茅
동자류화광%공예광물학%광물해리분석계통( MLA)%운남사모
copper-zinc sulfide ore%process mineralogy%Mineral Liberation Analyser( MLA )%Simao Region in Yunnan Province
云南思茅地区有大量难选铜锌多金属硫化矿资源，由于其矿石结构、成分及构造复杂，采用传统的镜下鉴定工艺矿物学分析对铜、锌等有价金属的赋存状态等难以自动准确定量。本文采用化学分析、偏光显微分析及矿物解离度分析（ MLA）等多种现代分析测试方法，研究该地区矿石的主要元素组成、矿物种类、嵌布和包裹特性等。分析表明，铜锌硫化矿的主要元素及含量为Cu 3.03%、Zn 3.90%、S 27.44%、Pb 0.13%。金属矿物主要是黄铁矿、黄铜矿和闪锌矿，含少量方铅矿；目的矿物黄铜矿、闪锌矿主要与黄铁矿连生和被其包裹；其次黄铜矿和闪锌矿相互连生和被其包裹，且96%以上的黄铜矿、闪锌矿和黄铁矿均分布在粒度大于9.6μm的易选粒级范围。方铅矿多呈细粒嵌布状，与铜、锌、硫矿物之间的磨矿解离有一定困难。根据工艺矿物学研究结果，本文提出，思茅地区的铜锌硫化矿矿石需磨至约31μm方能实现铜-锌-硫矿物的解离，需磨至约14μm方能实现铅与其他矿物的解离，同时预测了铜锌硫化矿中铜和锌的理论选矿回收率分别为91.22%和84.92%。本文研究成果对该地区难选多金属硫化矿的选矿技术制定和指标选择具有实际的指导意义。
雲南思茅地區有大量難選銅鋅多金屬硫化礦資源，由于其礦石結構、成分及構造複雜，採用傳統的鏡下鑒定工藝礦物學分析對銅、鋅等有價金屬的賦存狀態等難以自動準確定量。本文採用化學分析、偏光顯微分析及礦物解離度分析（ MLA）等多種現代分析測試方法，研究該地區礦石的主要元素組成、礦物種類、嵌佈和包裹特性等。分析錶明，銅鋅硫化礦的主要元素及含量為Cu 3.03%、Zn 3.90%、S 27.44%、Pb 0.13%。金屬礦物主要是黃鐵礦、黃銅礦和閃鋅礦，含少量方鉛礦；目的礦物黃銅礦、閃鋅礦主要與黃鐵礦連生和被其包裹；其次黃銅礦和閃鋅礦相互連生和被其包裹，且96%以上的黃銅礦、閃鋅礦和黃鐵礦均分佈在粒度大于9.6μm的易選粒級範圍。方鉛礦多呈細粒嵌佈狀，與銅、鋅、硫礦物之間的磨礦解離有一定睏難。根據工藝礦物學研究結果，本文提齣，思茅地區的銅鋅硫化礦礦石需磨至約31μm方能實現銅-鋅-硫礦物的解離，需磨至約14μm方能實現鉛與其他礦物的解離，同時預測瞭銅鋅硫化礦中銅和鋅的理論選礦迴收率分彆為91.22%和84.92%。本文研究成果對該地區難選多金屬硫化礦的選礦技術製定和指標選擇具有實際的指導意義。
운남사모지구유대량난선동자다금속류화광자원，유우기광석결구、성분급구조복잡，채용전통적경하감정공예광물학분석대동、자등유개금속적부존상태등난이자동준학정량。본문채용화학분석、편광현미분석급광물해리도분석（ MLA）등다충현대분석측시방법，연구해지구광석적주요원소조성、광물충류、감포화포과특성등。분석표명，동자류화광적주요원소급함량위Cu 3.03%、Zn 3.90%、S 27.44%、Pb 0.13%。금속광물주요시황철광、황동광화섬자광，함소량방연광；목적광물황동광、섬자광주요여황철광련생화피기포과；기차황동광화섬자광상호련생화피기포과，차96%이상적황동광、섬자광화황철광균분포재립도대우9.6μm적역선립급범위。방연광다정세립감포상，여동、자、류광물지간적마광해리유일정곤난。근거공예광물학연구결과，본문제출，사모지구적동자류화광광석수마지약31μm방능실현동-자-류광물적해리，수마지약14μm방능실현연여기타광물적해리，동시예측료동자류화광중동화자적이론선광회수솔분별위91.22%화84.92%。본문연구성과대해지구난선다금속류화광적선광기술제정화지표선택구유실제적지도의의。
There are large amounts of refractory copper-zinc polymetallic sulfide ore resources in the Simao region of Yunnan Province. Traditional mineral identification under microscope is difficult to automatically accurately determine copper,zinc and other valuable metals due to their complex mineral structure and composition. Methods of chemical,polarized light microscopic analysis and Mineral Liberation Analysis( MLA)were conducted to study the elements composition,mineral species,disseminated and inclusions characteristics of the sulfide ores. The results show that the ore contains about 3. 03% Cu,0. 13% Pb,3. 90% Zn and 27. 44% S. The main metallic minerals include chalcopyrite,pyrite,sphalerite and minor galena. The objective minerals of chalcopyrite and sphalerite are intergrowth and wrapped with pyrite. More than 96% of chalcopyrite,sphalerite and pyrite are distributed on a larger size than 9. 6 μm,which are in the range of easy mineral processing. Galena is finely disseminated and its grinding dissociation with other sulfide minerals is difficult. Based on the process mineralogy research results,the ore needs to be ground to approximately 31 μm to achieve the dissociation of Cu-Zn-S sulfide minerals,and to approximately 14 μm to achieve the dissociation of Pb-Cu-Zn-S sulfide minerals. The theory recovery of Cu is 91 . 22% and Zn is 84 . 92%. These results are very important to develop mineral processing technology and select indicators for refractory sulfide ore.
