基于磨矿技术效率锡石多金属硫化矿磨矿优化研究
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摘要
在锡石多金属硫化矿磨矿实践中,存在锡石过磨和硫化矿欠磨的问题。为缓解锡石过磨和硫化矿欠磨矛盾,实现磨矿优化,采用单因素试验与响应曲面法试验方法,提出合格粒级指数表征方法,研究了入磨粒度、磨矿时间、磨矿浓度对锡石多金属硫化矿磨矿技术效率与合格粒级指数的影响,结果表明:单因素分析时,与-3 mm入磨粒度相比,-2 mm入磨粒度的磨矿产物能够得到较高的锡石磨矿技术效率和硫化矿磨矿技术效率,且锡、锌、铅、铁四种金属的合格粒级指数较高;磨矿时间为8 min时,磨矿产物的磨矿技术效率最高,且锡金属合格粒级指数最高;磨矿浓度为75%时,锡金属合格粒级指数最高。响应曲面法分析时,入磨粒度为-2 mm,磨矿时间为8 min,磨矿浓度为75%时,锡金属合格粒级指数最高。
There are still some problems about cassiterite overgrinding and sulfide ore undergrinding in grinding practice of cassiterite polymetallic sulfide ore.In order to alleviate the contradiction and realize grinding optimization,this paper used the single factor test and response surface method test method and put forward the index of qualified particle characterization methods,studied the effects of feed size and grinding time,grinding density on cassiterite polymetallic sulfide ore grinding technical efficiency and index of qualified particle.The results show that compared with-3 mm feed size,the grinding product size of-2 mm feed size can get higher grinding technical efficiency of cassiterite and sulfide ore and higher index of qualified particle of tin,zinc,lead,iron four metal grinding; as grinding time is 8 min,it can get the highest grinding technical efficiency of cassiterite and sulfide ore efficiency and tin index of qualified particle is the highest; as the grinding concentration is 75%,tin index of qualified particle is the highest.Using the response surface method analysis,when the grinding feed size is-2 mm,the grinding time is 8 min,the grinding concentration is 75%,the index of qualified particle of tin metal is the highest.
There are still some problems about cassiterite overgrinding and sulfide ore undergrinding in grinding practice of cassiterite polymetallic sulfide ore.In order to alleviate the contradiction and realize grinding optimization,this paper used the single factor test and response surface method test method and put forward the index of qualified particle characterization methods,studied the effects of feed size and grinding time,grinding density on cassiterite polymetallic sulfide ore grinding technical efficiency and index of qualified particle.The results show that compared with-3 mm feed size,the grinding product size of-2 mm feed size can get higher grinding technical efficiency of cassiterite and sulfide ore and higher index of qualified particle of tin,zinc,lead,iron four metal grinding; as grinding time is 8 min,it can get the highest grinding technical efficiency of cassiterite and sulfide ore efficiency and tin index of qualified particle is the highest; as the grinding concentration is 75%,tin index of qualified particle is the highest.Using the response surface method analysis,when the grinding feed size is-2 mm,the grinding time is 8 min,the grinding concentration is 75%,the index of qualified particle of tin metal is the highest.
引文
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[2]薛天利.锡石多金属硫化矿选择性磨矿行为研究[D].南宁:广西大学硕士学位论文,2014.
[3]邱冠周,胡岳华,王淀佐.颗粒间相互作用与细粒浮选[M].长沙:中南工业大学出版社,1993:58-89.
[4]邬武进.细泥锡石浮选工艺研究[J].上海第二工业大学学报,2000(2):66-72.
[5]杨明广,苏思苹.分级分选回收尾矿中低品位锡石的研究[J].有色金属(选矿部分),2005(1):27-30.
[6]朱一民,周菁,徐金球,等.高效低毒锡石浮选剂ZJ-3浮选锡石细泥试验研究[J].有色金属(选矿部分),2001(2):38-41.
[7]何名飞,罗朝艳,陈玉平,等.细粒锡石浮选研究[J].矿冶工程,2008,28(4):29-31.
[8]段希祥.碎矿与磨矿[M].北京:冶金工业出版社,2006:134-136.