CAJ | 학술논문

本文采用化学分析、XRD、SEM等方法,对急冷处理的铜渣的矿物学进行了研究,结果表明：渣中含铜和铁分别为0.8%和40%；铜元素主要以CuS和 Cu形成的冰铜相形态存在,同时夹杂有少量的O、Pb、Fe等元素,平均粒度小于5μm；铁元素主要以难还原、熔点低的铁橄榄石形式存在,渣中铜、铁嵌布粒度极细且分布均匀,多种矿物互相包裹,结构致密,铜渣熔化初始温度在1200℃,1250℃以后熔化速度加快,1300℃左右铜渣基本熔化完毕,升温过程发生了晶型转变。通过对铜渣进行还原改性-高温熔分探索性试验,获得了TFe为94.43%的粒铁。在此基础上,结合直接还原工艺应用现状,建议采用含碳球团-转底炉工艺对铜渣进行还原预处理,破坏铁橄榄石结构、促进铁晶粒聚合长大,最后采用高温熔分方法回收有价金属、提铁后的尾渣制备建材的工艺流程。
본문채용화학분석、XRD、SEM등방법,대급랭처리적동사적광물학진행료연구,결과표명：사중함동화철분별위0.8%화40%；동원소주요이CuS화 Cu형성적빙동상형태존재,동시협잡유소량적O、Pb、Fe등원소,평균립도소우5μm；철원소주요이난환원、용점저적철감람석형식존재,사중동、철감포립도겁세차분포균균,다충광물호상포과,결구치밀,동사용화초시온도재1200℃,1250℃이후용화속도가쾌,1300℃좌우동사기본용화완필,승온과정발생료정형전변。통과대동사진행환원개성-고온용분탐색성시험,획득료TFe위94.43%적립철。재차기출상,결합직접환원공예응용현상,건의채용함탄구단-전저로공예대동사진행환원예처리,파배철감람석결구、촉진철정립취합장대,최후채용고온용분방법회수유개금속、제철후적미사제비건재적공예류정。
In this paper,using the methods of chemical analysis,XRD,SEM and so on to do research into Mineralogical characteristics of rapid cooling copper slag.The results show that the content of copper and iron were 0.8% and 40% respectively,the content of the harmful elements such as lead,zinc and arsenic is less.Copper is mainly exist in matte phase of CuS and Cu,mixed with a small amount of O,Pb,Fe and other elements at the same time,the average particle size of less than 5μm.Iron is mainly exist in the form of difficult to restore and low melting point fayalite.Copper and iron in slag disseminated fine and grain size distribution,each wrapped in a variety of dense structure minerals.Copper slag melting initial temperature at 1200℃,after 1250℃ melting speed,around 1300℃ finished basic copper slag melting,and crystal transformation happened in the process of heating.94.43 percent TFe of the grain for iron is obtained through the study of the reduction of copper slag pellets containing carbon reduction modification-high temperature melting and separation.on this basis,together with the present situation of direct reduction technology application,and proposed technological process that using the method of carbon-containing pellets to make the copper slag reduction pretreatment,and destroy iron olivine structure,promote the iron grain grew up aggregation.Finally by adopting the method of high temperature melting and separation to recycle valuable metals,tailings for building materials.