缅甸某氧化铜铅矿石工艺矿物学研究
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摘要
为给缅甸某氧化铜铅矿石的选矿试验提供依据和指导,采用常规工艺矿物学手段研究了矿石的成分、结构构造和主要矿物的嵌布特征。结果表明:(1)矿石含铜1.52%,含铅7.84%,含银243.80 g/t,主要有用矿物为蓝铜矿、孔雀石、方铅矿、白铅矿等;主要脉石矿物为石英、重晶石和方解石等,矿石矿物成分复杂。(2)氧化铜占总铜的约85%,主要以孔雀石和蓝铜矿形式存在,硫化铜等仅占总铜的约15%;铅矿物的氧化率为65%左右,铅主要以方铅矿、白铅矿和铅矾的形式存在。(3)矿石结构形式有碎裂化蚀变粉砂结构、半自形板状—他形粒状结构、细晶结构、不等粒他形粒状结构、金属不透明矿物具他形粒状结构、残余结构等。矿石碎块中矿物集合体均匀分布,少量蓝铜矿、孔雀石星散浸染状分布,具块状构造及星散浸染状构造。(4)矿石中矿物的嵌布粒度粗细不均,一般在0.004～3 mm,铜矿物粒度一般在0.01～1 mm,铅矿物粒度一般在0.004～1.5 mm。
In order to provide basis and guidance for the ore dressing test of a copper and lead oxide ore in Burma,the composition,structure and texture of the ore and the embedding characteristics of the main minerals are studied by conventional mineralogical means. The results show that(1)the ore contains 1.52% copper,7.84% lead and 243.80 g/t silver,the main useful minerals are azurite,malachite,galena,cerusite and so on. The main gangue minerals are quartz,barite and calcite,and the ore mineral composition is complex.(2)Copper oxide minerals account for about 85% of the total copper minerals,mainly in the form of malachite and azurite,copper sulfide only accounts for about 15% of the total copper,and the oxidation rate of lead minerals is about 65%,lead mainly in the form of galena,cerusite ore and lead alum.(3)The structure of ore structure consists of cracking altered siltstone structure,hypautomorphic plate-xenomorphic granular structure,fine crystal structure,unequal granular and granular structure,metallic opaque mineral with granular structure and residual structure.Mineral aggregates in ore fragments are evenly distributed,and a small amount of azurite and malachite scattered disseminated,with massive structures and scattered disseminated structures.(4)The granularity of the minerals in the ore is not uniform,usually from 0.004 to 3 mm,and the size of the copper minerals is generally 0.01 ～ 1 mm,and the size of the lead minerals is generally 0.004 to 1.5 mm.
In order to provide basis and guidance for the ore dressing test of a copper and lead oxide ore in Burma,the composition,structure and texture of the ore and the embedding characteristics of the main minerals are studied by conventional mineralogical means. The results show that(1)the ore contains 1.52% copper,7.84% lead and 243.80 g/t silver,the main useful minerals are azurite,malachite,galena,cerusite and so on. The main gangue minerals are quartz,barite and calcite,and the ore mineral composition is complex.(2)Copper oxide minerals account for about 85% of the total copper minerals,mainly in the form of malachite and azurite,copper sulfide only accounts for about 15% of the total copper,and the oxidation rate of lead minerals is about 65%,lead mainly in the form of galena,cerusite ore and lead alum.(3)The structure of ore structure consists of cracking altered siltstone structure,hypautomorphic plate-xenomorphic granular structure,fine crystal structure,unequal granular and granular structure,metallic opaque mineral with granular structure and residual structure.Mineral aggregates in ore fragments are evenly distributed,and a small amount of azurite and malachite scattered disseminated,with massive structures and scattered disseminated structures.(4)The granularity of the minerals in the ore is not uniform,usually from 0.004 to 3 mm,and the size of the copper minerals is generally 0.01 ～ 1 mm,and the size of the lead minerals is generally 0.004 to 1.5 mm.
引文
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[3]王蓓,罗兴.工艺矿物学在选矿工艺研究中的作用及影响[J].矿物学报,2011(S1):730-732.Wang Bei,Luo Xing.The role and influence of process mineralogy in the study of mineral processing technology[J].Acta Mineralogica Sinica,2011(S1):730-732.
[4]时文革,巩恩普,姚玉增,等.新疆滴水铜矿石工艺矿物学研究[J].金属矿山,2015(5):114-118.Shi Wenge,Gong Enpu,Yao Yuzeng,et al.Research on the process mineralogy of the ore from Dishui copper in Xinjiang[J].Metal Mine,2015(5):114-118.
[5]石贵明,周意超,刘琴,等.广东大尖山某铅锌多金属矿石工艺矿物学研究[J].金属矿山,2018(2):98-102.Shi Guiming,Zhou Yichao,Liu Qin,et al.Mineralogy Research of a lead-zinc polymetallic ore in Dajianshan of Guangdong[J].Metal Mine,2018(2):98-102.
[6]李春龙,苟延伟,先永骏,等.国外某铜铅银钡多金属矿的分离与回收工艺[J].过程工程学报,2017(4):751-756.Li Chunlong,Gou Yanwei,Xian Yongjun,et al.Separation and recovery technology of copper,lead and silver barium polymetallicore abroad,[J].The Chinese Journal of Process Engineering,2017(4):751-756.
[7]王伟之,李学军,陈丽平.辽宁某铜铅锌多金属硫化矿工艺矿物学研究[J].金属矿山,2014(2):83-86.Wang Weizhi,Li Xuejun,Chen Liping.Process mineralogy research on a copper-lead-zinc polysulfide ore from Liaoning[J].Metal Mine,2014(2):83-86.
[8]方建军.东川汤丹难选氧化铜矿物质组成及浮选工艺研究[D].昆明:昆明理工大学,2002.Fang Jianjun.Study on Material Composition and Flotation Technology of Refractory Oxidized Copper Ore in Dongchuan[D].Kunming:Kunming University of Science and Technology,2002.
[9]温德新,周晓文.江西某铅锌矿石工艺矿物学研究[J].金属矿山,2014(1):69-73.Wen Dexin,Zhou Xiaowen.Research of process mineralogy of a lead-zinc ore from Jiangx[iJ].Metal Mine,2014(1):69-73.
[10]柏少军,文书明,刘殿文,等.云南某高磷铁矿石工艺矿物学研究[J].矿冶,2010(2):91-93.Bai Shaojun,Wen Shuming,Liu Dianwen,et al.Process mineralogy study on some high phosphorus iron ore in Yunnan[J].Mining&Metallurgy,2010(2):91-93.
[11]蔡璐,刘爽,李文娟,等.玉龙铜矿Ⅴ号矿体氧化矿石工艺矿物学特征[J].金属矿山,2012(10):86-89.Cai Liulu,Liu Shuang,Li Wenjuan,et al.Study on process mineralogy of oxidized ore from V ore body in Yulong Copper Mine[J].Metal Mine,2012(10):86-89.