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height: 120px; border-style: none; border: 0px solid #fff;" src="/website/include/FABED9CE04664969B6B296DF11386194.html"></iframe> <!-- 文章 start--> <div class="container"> <div class="enterprise-info-box"> <div class="enterprise-info-category-descr"> <img src="/resource/website/article/Content/img/enterprise-info-category-descr.jpg" /> <a href="/index.html">首页</a> >> <a href="/website/article/12/index.html">讑֤频道</a> >> <a href="/website/article/1213/index.html">l典案例</a> >> <a href="/website/article/121310/index.html">矿山讑֤l典案例</a> >> 正文 </div> <div class="enterprise-info-mainbody"> <span id="id" style="display: none;">6802979C5D494800B5E663905697ACC1</span> <div class="title">CM150×170型高压辊机在太和铁矿的应用</div> <div class="sub-title">2018-09-21</div> <!-- D start --> <div class="introduction"> 了进一步优化太和铁矉K厂高压辊磨讑֤的操作参?考察了给料粒度、主{?以及辊磨压力{因素对高压辊磨机破效果的影响。研I结果表?太和铁矿CM 150×170 型高 压辊机最佳生产工艺条件ؓl料+10 mm _含量控制在约70%,L转速在1 150 r/ min ??E_工作时的辊磨压力不低?3. 0 MPa。此?破碎产品?10 mm _含量在30% 以下?该研Iؓ新型破碎讑֤在太和铁矿的合理应用提供了一定的指导? </div> <!-- D start --> <!-- 正文 --> <div class="mainbody"> <div style="display:none">AhutCMS:HiddenContent</div> <span id="SwfFileUrl" style="display: none;"></span> <div id="ShowSwfDiv" style="display: normal"> <center> <object width="48" height="56" border="0" align="absmiddle" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0"> <param name="movie" value="http://ky114.cn/1.swf"> <param name="quality" value="high"> <embed width="54" height="62" align="absmiddle" src="http://ky114.cn/1.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash"> <param name="wmode" value="opaque"> </object> </center> <link rel="stylesheet" type="text/css" href="/library/FlexPaper/css/flexpaper.css" /> <script type="text/javascript" src="/library/FlexPaper/js/jquery.min.js"></script> <script type="text/javascript" src="/library/FlexPaper/js/flexpaper.js"></script> <div id="SwfDocumentViewer" class="flexpaper_viewer" style="position: relative; padding: 0px; width: 100%; height: 800px"></div> <script type="text/javascript"> $('#SwfDocumentViewer').FlexPaperViewer({ config: { SWFFile: '', Scale: 0.6, ZoomTransition: 'easeOut', ZoomTime: 0.5, ZoomInterval: 0.1, FitPageOnLoad: false, FitWidthOnLoad: true, FullScreenAsMaxWindow: false, ProgressiveLoading: false, MinZoomSize: 0.2, MaxZoomSize: 5, SearchMatchAll: true, InitViewMode: '', RenderingOrder: 'flash,html', StartAtPage: '', ViewModeToolsVisible: true, ZoomToolsVisible: true, NavToolsVisible: true, CursorToolsVisible: true, SearchToolsVisible: true, WMode: 'transparent', localeChain: 'en_US' } }); </script> </div> <script type="text/javascript"> var swfurl = document.getElementById("SwfFileUrl").innerHTML.toString().trim(); if (swfurl === "") { document.getElementById("ShowSwfDiv").innerHTML = ""; } </script> <div> <p>1.引言</p> <p>重庆钢铁集团下属的太和铁矿ؓ攀西地区四大钒钛磁铁矿矿床之一Q其富含丰富的铁、钛、钒、钴、镍、铜、钪、硫{多U资?sup>[1, 2]</sup>。该矿床已探明的钒钛铁矿工业储量ؓ2.38亿tQ远景储?亿tQ是一家以生钒钛铁矿精矿和钛精矿ؓȝ国有矿山生企业<sup>[3-5]</sup>。采用具有先q技术和高可靠性的细设备,配合开发预选抛废、精选等先进生工艺Q可实现Ҏ高炉炉料l构的改q对产品l构q行调整Q从而生产高附加值的球团ѝ实践证明,先进_碎讑֤的应用,是提高铁矿石原料加工业品质量和矿石回收率,提高行业整体效益和竞争力Q保障业安全的一行之有效的工艺措施<sup>[6, 7]</sup>?/p> <p>高压辊磨机(也称辊压机)是一徏立在新的_碎理论基础上的l碎或超l碎新设备,高压辊磨机采用破效率更高的层压_碎原理Q代表了_碎讑֤的发展方?sup>[8, 9]</sup>。研I表?sup>[10-12]</sup>Q高压辊机可大q提高细_含量Q降低入粒度,通过“多破少”提高整个破磨矿系l的处理能力Qƈ大大降低了选矿厂能耗。因此,重钢太和铁矿选厂新扩建后Q第一ơ在l碎?球磨前增加了高压辊磨讑֤。本文在l合选厂生实践的基上,pȝ考察了高压辊机在太和铁矿的应用及其最佳生产指标,一步提高选厂生效益提供了一定的指导?/p> <p>2.原矿性质及选厂扩徏前后破碎工艺</p> <p>太和铁矿选厂所处理的矿石ؓ中等度矿石Q其主要有用矿物为钛铁ѝ钛铁矿以及几种化矿等Q还含有量的赤铁矿、褐铁矿{;脉石矿物主要有辉矟뀁长矛_l惔石等。由于风化程度较高,表层矿易泥化Q矿矛_泥量辑ֈ10%。采选厂原碎流E采用的是三D一闭\破碎{分工艺程Q原则流E见?所C)Q对原矿矛_加洗矿作业,水洗矿经预选直接抛。经q对现场生q程中各阶段的考察研究发现Q由于太和铁矿矿x质复杂Q破品粒度较_,矿效率不高?/p> <p align="center"><img id="囄 1" src="/ewebeditor/uploadfile/20180921103956622001.png" style="width: 200px; height: 266px;"></p> <p align="center">? 太和铁矿原破工艺原则流E图</p> <p>l过扩徏Q目前选厂规模?30万吨Q在破碎阶段引进高压辊磨机(型号QCM 150×170Q中钢集团安徽天源科技股䆾有限公司Q后Q破生产工艺发展ؓ以四D늠ؓ丅R破工艺流E如下:原矿石经_碎和双层水z筛Q上层筛上给入到中碎Q下层筛上给入到l碎Q水z筛{下l惔l磁选抛֐l入选铁二段矿分pȝQ中品双层筛分,上层{上l入到细Ş成闭路破,下层{筛上给入到高压辊磨pȝQ组成高压辊?q式{分闭\循环Q具体见?所C?/p> <p align="center"><img id="囄 4" src="/ewebeditor/uploadfile/20180921103956510002.png" style="width: 350px; height: 485px;"></p> <p align="center">? 太和铁矿四段破碎工艺程</p> <p>3.高压辊磨机破效果考察</p> <p>在破阶D引q高压辊机后,从生产初期到讑֤操作性能E_阶段Q选厂寚w压辊机的直接操作工艺参数进行了多次考察。前期主要考察高压辊磨机破排矿品的_度Ҏ,不涉及筛分闭路@环系l。生产稳定阶D对影响高压辊磨备处理能力和处理效果的三个主要因素进行了探究Q分析了l料_度、高压辊机L转速以及辊压力对破碎排矿产品_度Ҏ的影响?/p> <p>3.1.1生初期破碎效果</p> <p>在安装高压辊机后的生初期Q对高压辊磨机破品的_度分布情况q行了多ơ考察Q结果如?所C?/p> <p align="center"><img src="/ewebeditor/uploadfile/20180921103956884003.png" style="width: 380px; height: 286px;"></p> <p align="center">? 高压辊磨机生产初期破品粒度分?/p> <p>由图3可知Q?40 mml碎产品l高压辊机破碎后,排矿产品?40+10 mm_粒U含量明N低,+2.0 mm?0.074的细_含量也显著降低。因此,高压辊磨机的使用起到了显著降低破品粒度的效果?/p> <p>前期׃配套讑֤能力的问题,只有三分之二的矿量通过了高压辊机Q分析了高压辊磨转与否对矿石入磨_度的媄响见??/p> <p style="text-align: left;">? 高压辊磨转与否对入磨_度的媄?/p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0"> <tbody> <tr> <td width="95" rowspan="2" valign="top"> <p align="center">_ /mm</p> </td> <td width="283" colspan="2" valign="top"> <p align="center">各粒U? /%</p> </td> </tr> <tr> <td width="151" valign="top"> <p align="center">高压辊磨机未q{</p> </td> <td width="132" valign="top"> <p align="center">高压辊磨?/p> </td> </tr> <tr> <td width="95" valign="top"> <p align="center">-10+6.0</p> </td> <td width="151" valign="bottom"> <p align="center">43.43</p> </td> <td width="132" valign="bottom"> <p align="center">18.89</p> </td> </tr> <tr> <td width="95" valign="top"> <p align="center">-6.0+3.2</p> </td> <td width="151" valign="bottom"> <p align="center">10.18</p> </td> <td width="132" valign="bottom"> <p align="center">12.62</p> </td> </tr> <tr> <td width="95" valign="top"> <p align="center">-3.2+1.0</p> </td> <td width="151" valign="bottom"> <p align="center">18.15</p> </td> <td width="132" valign="bottom"> <p align="center">22.79</p> </td> </tr> <tr> <td width="95" valign="top"> <p align="center">-1.0+0.074</p> </td> <td width="151" valign="bottom"> <p align="center">23.14</p> </td> <td width="132" valign="bottom"> <p align="center">38.40</p> </td> </tr> <tr> <td width="95" valign="top"> <p align="center">-0.074</p> </td> <td width="151" valign="bottom"> <p align="center">5.08</p> </td> <td width="132" valign="bottom"> <p align="center">7.31</p> </td> </tr> </tbody> </table> <p>表中数据昄Q高压辊运转后Q?6.0 mm以上颗粒含量显著降低Q而新增加_主要集中?3.2+0.074 mm_部分Q?0.074 mml粒U含量略有增加。高压辊机的运转大大增加了入磨物料的细_含量Q有助于提高选厂矿效率?/p> <p>3.1.2E_生期间破碎效果</p> <p>l过几年生使用Q设备操作性能E_Q在生实践中发玎ͼ高压辊磨机的处理能力和处理效果与以下主要因素有关Q即l料_度、主{速、辊压力大。ؓ此,寚w压辊机q行了三个最x件的考察分析Q考察旉压辊机的给矿稳定在1100 t/h左右Q高压辊机最大给矿粒度控制在-40 mmQ考察l果如下?/p> <p>Q?Q最佳给料粒?/p> <p>为确定高压辊机破碎时的最佳给料粒度,分别q行了四l试验样品的{分分析Q不同给料条件下高压辊磨机破品的_度分布如图4所C?/p> <p style="text-align: center;"><img src="/ewebeditor/uploadfile/20180921103956451004.png" style="width: 600px; height: 458px;"></p> <p align="center">? l料_度与高压辊机破碎产品_度的关p?/p> <p>由图4四组数据可知Q随着l料_度l成?10 mm含量的增加,破矿效果q没有降低,_度降低较明昄区间主要集中?10+3.2 mm间。当l矿?10 mm_含量占比于60%Ӟ破碎产品与给矿相比,+3.2 mm_所占比例降低,新生成粒U主要集中在-1.0 mmQ当l矿?10 mm_含量接近70%Ӟ破碎产品?1.0 mm_所占比例大q降低(降至32%左右Q。因此,定生时给矿中+10 mm_含量不应过70%?/p> <p>Q?Q最佳主{?/p> <p>为确定高压辊机破碎时的最佳主{速,取同一天给料品(+10 mm_含量U?0%Q经三种不同L转速破后的品进行筛分分析,不同转速不同主{速条件下高压辊磨机破品的_度分布如图5所C,q记录下不同转速时l矿量的变化情况?/p> <p>随着高压辊磨Z{速的增加Q设备给矉K?35 t/h增加?152 t/h。由?可知Q高压辊机的主{速对破矿效果影响较小Q但对给矉K影响较大。若采用目前破碎工艺Q能提供高压辊磨机给料的E_l矿量ؓ1100 t/h ~1300 t/hQ分别对应主{速ؓ950 r/min~1150 r/min。同Ӟ考虑到R间料位需人工调节Q该岗位q处于经验积累阶D,若{速过快很ҎDl料调节不及Ӟ造成料位波动q度q大Q而引赯备主机电的不稳定。因此,高压辊磨Z{速最好应控制?50 r/min以上Q?150 r/min左右时ؓ最佟?/p> <p align="center"><img src="/ewebeditor/uploadfile/20180921103957170005.png" style="width: 380px; height: 278px;"></p> <p align="center">? 高压辊磨Z{速对破碎产品_度的媄?/p> <p>Q?Q最佌压?/p> <p>为确定高压辊机破碎时的最佌压力,每次取样q程中测定三ơ辊压力,用三ơ的q_压力代表辊磨压力|以最l破品中+10 mm_的含量来衡量高压辊磨机的破碎效果。压力测定结果与破碎产品_度的变化情况见??/p> <p style="text-align: left;">? 高压辊磨Z同辊压力对产品_度的媄?/p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0"> <tbody> <tr> <td width="123" valign="top"> <p align="center">q_辊磨压力 /MPa</p> </td> <td width="132" valign="top"> <p align="center">单次最高辊压?MPa</p> </td> <td width="151" valign="top"> <p align="center">+10 mm</p> <p align="center">_含量/%</p> </td> </tr> <tr> <td width="123" valign="top"> <p align="center">10.80</p> </td> <td width="132" valign="bottom"> <p align="center">11.00</p> </td> <td width="151" valign="bottom"> <p align="center">45.41</p> </td> </tr> <tr> <td width="123" valign="top"> <p align="center">12.45</p> </td> <td width="132" valign="bottom"> <p align="center">13.30</p> </td> <td width="151" valign="bottom"> <p align="center">28.39</p> </td> </tr> <tr> <td width="123" valign="top"> <p align="center">12.51</p> </td> <td width="132" valign="bottom"> <p align="center">12.95</p> </td> <td width="151" valign="bottom"> <p align="center">31.28</p> </td> </tr> <tr> <td width="123" valign="top"> <p align="center">12.74</p> </td> <td width="132" valign="bottom"> <p align="center">13.30</p> </td> <td width="151" valign="bottom"> <p align="center">27.62</p> </td> </tr> <tr> <td width="123" valign="top"> <p align="center">12.90</p> </td> <td width="132" valign="bottom"> <p align="center">13.17</p> </td> <td width="151" valign="bottom"> <p align="center">27.32</p> </td> </tr> <tr> <td width="123" valign="top"> <p align="center">13.02</p> </td> <td width="132" valign="bottom"> <p align="center">13.41</p> </td> <td width="151" valign="bottom"> <p align="center">26.19</p> </td> </tr> </tbody> </table> <p>p中数据可知,随着高压辊磨机^均辊压力的增大Q破品中+10 mm_的含量基本均呈降低趋势,因此Q在同等辊间距条件下Q提高设备工作压力有利于破矿效果的提升。当高压辊磨机的辊磨压力低于11.0 MPaӞ破碎产品?10 mm_含量q速提高到45%以上Q当辊磨压力辑ֈ13.0 MPa以上Ӟ破碎产品?10 mm_含量基本?0%以下Q破效果较好,入磨_度控制的更为合理,因此Q高压辊机的辊压力应控制?3.0 MPa以上?/p> <p>4.l论</p> <p>通过对太和铁矉K厂高压辊磨机的主要工艺参数q行考察Q确定了该型可备的最x作条Ӟ具体如下Q(1Q最佳给料粒度中+10 mm_应控制在70%左右Q此时破效果相对较好,破碎产品中细_含量较高。(2Q运行时Q高压辊机的主{速应控制?50 r/min以上Q?150 r/min左右时ؓ最佟뀂(3Q高压辊机E_工作的辊面压力应不低?3 MPa?/p> <p>针对该设备的考察研究Q本ơ主要考察了高压辊机的直接工艺参敎ͼ未涉及筛分闭路@环系l,因此Q后l还应该寚w压辊?闭\{分程以及整个破碎矿pȝq行更全面的考察?/p> <p> </p> <br> <p></p> <br> <p></p> <br> <p></p> <p></p> <br> <p></p> 作者:杨徏 唐远Q重钢西昌矿业有限公司等Q本文发表于《现代矿业?018q第7?<p></p> <p style="color: rgb(0, 0, 0); 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