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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;">10D923D448794115B5B35BF70B4FB081</span> <div class="title">大红山铁?80 万t/ a 选矿厂塔机应用实践</div> <div class="sub-title">2018-09-18</div> <!-- D start --> <div class="introduction"> 大红山铁?80万t/a选矿厂磨矿细度由立项时的-0.045 mm含量72.25%提高?1.24%。与原设计相比提高了1.24%Q磨机钢耗由原来?.4kg/t原矿下降到目前的0.25kg/t原矿Q磨机电耗由原来?2.89kwh/t下降到目前的8.02kwh/tQ铁_品位qҎ?0.06%提高?0.46%Q硅含量qҎ9.56%下降?.16%? </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> </p> <p align="left"> </p> <p align="left"> </p> <p>1Q前 a</p> <p>    昆钢大红山铁矿是昆钢主要的铁矿石原料基地Q位于云南省玉溪市新q_族、傣族自d戛洒镇,地理坐标东经10139Ԍ北纬2406Ԍ在紧靠哀牢山脉东侧的戛洒江东岸。铁矿d?5825.34万tQ是集采ѝ选矿、精矿管道输送和_末冉U技于一体的国内井下开采规模最大、精矿输送管道长度最长的特大型国有矿׃业?</p> <p>2. 大红山铁?80万t/a选矿厂高效细工?/p> <p>大红山铁?80万t/a选厂Ф8.8[4.8m半自机入选原矿主要来自露天,采出矿石l井下?200旋回破碎机粗至300-0mm块度后经?1??号带式输送机号送磨矿仓。磨矿仓?个?8m圆筒仓,底部p?4台振动给料机Q矿仓内矿石由振动给料机l入?4号带式输送机、再l熔-5? ?6号带式输送机q入φ8.8×4.8m半自机。半自磨Z1?.0×7.3m直线振动{构成闭路磨矿系l。半自磨机排矿经直线振动{分U,{上矿石依次l熔-7? ?8P?9号带式输送机到熔-5? ?6号带式输送机q回半自机。筛下ؓ合格的半自磨产品Q矿经渣浆泵送至φ660×12旋流器,q入一D느分U作业?台?.0×9.5m溢流型球机?l?60×12旋流器构成一D느闭\球磨pȝ?/p> <p>采用3台ETM-1500 型塔机?l?50×12旋流器构成二D闭路塔系l。塔机排矿由渣܇l入旋流器分U,旋流器沉砂返回塔机Q旋器溢流ZD塔品,依次q入二、三D늣选机_N,得到铁精矿,l三台d瑞克安全{分U后{下q入Φ32m高效密机浓~后_q入搅拌槽,再进?#加压늫输送至昆钢?/p> <p>3Q?80?t/a选厂入磨矿石性质</p> <p>   3Q?矿物Ҏ?/p> <p> 原矿的多元素化学分析l果、铁物相分析l果分别见表1、表2?/p> <p align="center">? 原矿化学多元素分?/p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="100%"> <tbody> <tr> <td width="14%"> <p align="center">元素</p> </td> <td width="10%"> <p align="center">TFe</p> </td> <td width="12%"> <p align="center">SFe</p> </td> <td width="12%"> <p align="center">FeO</p> </td> <td width="12%"> <p align="center">SiO<sub>2</sub></p> </td> <td width="12%"> <p align="center">Al<sub>2</sub>O<sub>3</sub></p> </td> <td width="12%"> <p align="center">CaO</p> </td> <td width="12%"> <p align="center">MgO</p> </td> </tr> <tr> <td width="14%"> <p align="center">含量Q?Q?/p> </td> <td width="10%"> <p align="center">19.45</p> </td> <td width="12%"> <p align="center">19.30</p> </td> <td width="12%"> <p align="center">8.14</p> </td> <td width="12%"> <p align="center">45.66</p> </td> <td width="12%"> <p align="center">10.64</p> </td> <td width="12%"> <p align="center">2.82</p> </td> <td width="12%"> <p align="center">0.97</p> </td> </tr> <tr> <td width="14%"> <p align="center">元素</p> </td> <td width="10%"> <p align="center">Cu</p> </td> <td width="12%"> <p align="center">S</p> </td> <td width="12%"> <p align="center">P</p> </td> <td width="12%"> <p align="center">Na<sub>2</sub>O</p> </td> <td width="12%"> <p align="center">K<sub>2</sub>O</p> </td> <td width="12%"> <p align="center">TiO<sub>2</sub></p> </td> <td width="12%"> <p align="center">烧损</p> </td> </tr> <tr> <td width="14%"> <p align="center">含量Q?Q?/p> </td> <td width="10%"> <p align="center">0.052</p> </td> <td width="12%"> <p align="center">0.032</p> </td> <td width="12%"> <p align="center">0.15</p> </td> <td width="12%"> <p align="center">3.84</p> </td> <td width="12%"> <p align="center">1.20</p> </td> <td width="12%"> <p align="center">1.90</p> </td> <td width="12%"> <p align="center">4.15</p> </td> </tr> </tbody> </table> <p align="center">? 铁物相分析结?/p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="100%"> <tbody> <tr> <td width="13%"> <p align="center">矿物</p> </td> <td width="12%"> <p align="center">铁?/p> </td> <td width="11%"> <p align="center">赤铁?/p> </td> <td width="13%"> <p align="center">酸?/p> </td> <td width="13%"> <p align="center">酸?/p> </td> <td width="11%"> <p align="center">黄铁?/p> </td> <td width="13%"> <p align="center">假象赤铁?/p> </td> <td width="11%"> <p align="center">合计</p> </td> </tr> <tr> <td width="13%"> <p align="center">含量Q?Q?/p> </td> <td width="12%"> <p align="center">14.64</p> </td> <td width="11%"> <p align="center">0.60</p> </td> <td width="13%"> <p align="center">0.80</p> </td> <td width="13%"> <p align="center">2.70</p> </td> <td width="11%"> <p align="center">—?/p> </td> <td width="13%"> <p align="center">1.01</p> </td> <td width="11%"> <p align="center">19.75</p> </td> </tr> <tr> <td width="13%"> <p align="center">分布?/p> </td> <td width="12%"> <p align="center">74.13</p> </td> <td width="11%"> <p align="center">3.04</p> </td> <td width="13%"> <p align="center">4.05</p> </td> <td width="13%"> <p align="center">13.67</p> </td> <td width="11%"> <p align="center">—?/p> </td> <td width="13%"> <p align="center">5.11</p> </td> <td width="11%"> <p align="center">100.0</p> </td> </tr> </tbody> </table> <p>原矿化学多元素分析、铁物相分析l果表明Q该铁矿x以磁铁矿ZQ磁铁矿中的铁占d量的74.13%Q铁矿物中弱性的赤褐、铁矿占3.04%、假象赤铁矿?.11%Q碳酔R、硅酔R{铁相占的比例也较大Q原矿中SiO<sub>2</sub>、K、Na、烧损等含量较高Q其他有x质S、P含量较低Q矿矛_?.052%Q未辑ֈl合利用标准Q矿石碱? 0.07Qؓ酸性矿矟?/p> <p>3Q?矿物l成及含?/p> <p>熔岩铁矿矿物l成较ؓ单,金属矿物以磁铁矿ZQ少量赤铁矿。微量褐铁矿、钛铁矿Q脉石矿物以长石ZQ次为石英、白云母Q少量绿泥石及碳酸盐c,微量黑云母、电气石、金U石{,q有微量L矛_黄铁ѝ矿物属于粗、细不均匀嵌布?/p> <p>? 熔岩铁矿矿石中各矿物含量</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="100%"> <thead> <tr> <td width="49%"> <p align="center">矿物名称</p> </td> <td width="24%"> <p align="center">含量Q?Q?/p> </td> <td width="26%"> <p align="center">金属分布?/p> </td> </tr> </thead> <tbody> <tr> <td width="49%"> <p align="center">铁?/p> </td> <td width="24%"> <p align="center">20.68</p> </td> <td width="26%"> <p align="center">76.72</p> </td> </tr> <tr> <td width="49%"> <p align="center">赤铁矿(包括假象赤铁矿)</p> </td> <td width="24%"> <p align="center">3.72</p> </td> <td width="26%"> <p align="center">11.88</p> </td> </tr> <tr> <td width="49%"> <p align="center">褐铁?/p> </td> <td width="24%"> <p align="center">0.77</p> </td> <td width="26%"> <p align="center">2.06</p> </td> </tr> <tr> <td width="49%"> <p align="center">钛铁?/p> </td> <td width="24%"> <p align="center">0.38</p> </td> <td width="26%"> <p align="center">0.69</p> </td> </tr> <tr> <td width="49%"> <p align="center">黄铁?/p> </td> <td width="24%"> <p align="center">0.06</p> </td> <td width="26%"> <p align="center">0.14</p> </td> </tr> <tr> <td width="49%"> <p align="center">长石、石?/p> </td> <td width="24%"> <p align="center">54.81</p> </td> <td width="26%"> <p align="center">0.42</p> </td> </tr> <tr> <td width="49%"> <p align="center">白云?/p> </td> <td width="24%"> <p align="center">9.46</p> </td> <td width="26%"> <p align="center">1.71</p> </td> </tr> <tr> <td width="49%"> <p align="center">l惔?/p> </td> <td width="24%"> <p align="center">4.20</p> </td> <td width="26%"> <p align="center">5.07</p> </td> </tr> <tr> <td width="49%"> <p align="center">白云矟뀁方解石</p> </td> <td width="24%"> <p align="center">4.13</p> </td> <td width="26%"> <p align="center">0.68</p> </td> </tr> <tr> <td width="49%"> <p align="center">黑云?/p> </td> <td width="24%"> <p align="center">0.62</p> </td> <td width="26%"> <p align="center">0.45</p> </td> </tr> <tr> <td width="49%"> <p align="center">L?/p> </td> <td width="24%"> <p align="center">0.75</p> </td> <td width="26%"> <p align="center">0.02</p> </td> </tr> <tr> <td width="49%"> <p align="center">金红矟뀁电气石、绿帘石</p> </td> <td width="24%"> <p align="center">0.42</p> </td> <td width="26%"> <p align="center">0.16</p> </td> </tr> <tr> <td width="49%"> <p align="center">合计</p> </td> <td width="24%"> <p align="center">100.00</p> </td> <td width="26%"> <p align="center">100.00</p> </td> </tr> </tbody> </table> <p> </p> <p>铁矿:主要Z形晶、半自ŞӞ部分形晶l构Q集合体_状、不规则状。多呈浸染状嵌布于脉石矿物中。嵌布粒度极不均匀Q细者小?0μmQ粗者大?.5mmQ一般ؓ0.03?.0mm?/p> <p>赤铁矿:主要Z形晶_状l构Q嵌布粒度较铁矿ؓl,一般ؓ0.02?.07mmQ呈染状嵌布于脉石矿物中。部分赤铁矿q铁矿氧化而来Qƈ与磁铁矿构成半假象矿Q其氧化E度一般较?/p> <p>长石Q他形粒状晶l构Z。与矌、白云母{脉石矿物互嵌成基底。长石的_度亦不均匀Q但较铁矿物_大Q一般在0.07~1.5mm之间Q还有少量长矛_于0.02mm的包体嵌于铁矿物中?/p> <p>矌Q主要ؓ他Ş_状晶结构,嵌布特征同长矟?/p> <p>白云母:自Ş、半自Ş晶片。呈集合体或单晶嵌于长石、石׃或与长石、石英及铁矿物互嵌。集合体_径多在0.06~0.24mm之间?/p> <p>矿石工艺矿物学研I表明:部熔岩铁矿矿石矿物l成单,金属矿物主要是磁铁矿。脉石矿物以长石Z。属于粗、细不均匀嵌布的低品位矿石?/p> <p>4Q大U山铁矿380?t/a选厂高效l磨新技术生产实?/p> <p> 4Q?塔磨机闭路磨矿控制技?/p> <p align="left">在细中采用3台ETM-1500 型塔机Q分别与Φ350旋流器(每组Φ350 mm×12支,每组q行4?支)构成闭\矿替代原来的?083溢流型球机与?50旋流器(每组Φ350 mm*16支,q行10?4支)闭\矿工艺程QƈҎ三选厂矿l度要求Q对Φ350旋流器系l进行控Ӟ生实践证明Q当控制旋流器,350*12三组 Q每l运?u1支时可以E_塔磨机@环负荷在250%左右Qƈ且对Φ350旋流器系l进行控制可以有效调控进入塔机的矿量Q从而可以有效控制磨矿浓度,实践证明当磨矿浓?8u2%Q旋器溢流产品度?2u2%Q磨矿细?325目可以稳定的辑ֈ80%以上。所以当塔磨ZΦ350旋流器的闭\矿控制E_Ӟ塔磨机闭路磨矿系l可以出很l的矿产品?/p> <p align="left">塔磨机闭路磨矿比球磨机闭路磨矿不但可以有效地提高矿l度而且可以降低能耗,提高铁精矿品位?/p> <p align="left">降低能耗原因是: 塔磨机的工作原理是介质摩擦物料达到磨削作用ƈ且塔机{体及衬板不q{; 内部物料又存在分层分U效果可减少q分研磨; 而球机的磨矿原理是介质撞击物料辑ֈ碎作用Q内部物料不存在分层分效果易造成q分研磨。在大红山铁?80万t/a选矿厂实际细生产中Q球机电耗的12.89kwh/t而塔机电耗ؓ8.02kwh/t下降?.87kwh/t?/p> <p align="left">提高铁精矿品位的原因是,l对Q?25 目不同磨矿细度品进行解d分析Q结果表明铁矿物解离效果Q当矿l度为-325?0%时单体解d?4. 18%Ql磨臻I325 ?0%时单体解d可达82. 66%Q这主要是铁矿物嵌布_度l小所_因此若想取得较好铁矿物单体解,获得较高的铁_品位必须q一步提高磨矿细度,在大U山铁矿380万t/a选矿厂实际细生产中Q采用塔后的铁_品位׃前采用球的60.06%提高C60.46%Q硅含量?.56%下降?.16%?/p> <p>4Q?塔磨机钢球优化技?/p> <p align="left">高铬铔R是一U性能优良的抗材料,同时比低铬铸铁高得多的韧性、强度,同时它还兼有良好的抗高温和抗腐蚀性能Q而磨矿介质的耐磨性能高低对磨矿生产v着极ؓ重要的作用。因此提高其度、抗冲击性、耐磨性能极ؓ重要。鉴于此Q我们采用?0mm的高铬铸铁球替代Φ5083溢流型球机低铬铔R钢锻φ40×45×45mm 。在大红山铁?80万t/a选矿厂实际细生产中Q球机钢耗的0.4kg/t而塔机钢耗ؓ0.25kg/t下降?.15kg/tQ达C降低钢耗的目的?/p> <p>4Q?塔磨机充填率优化技?/p> <p>     在塔矿?在一定的充填率条件下可以使搅拌磨机在_磨q程中搅拌器带动球介质q动才能发挥塔磨机最佳的剥作用.当处理能力和充填率达到^衡关pL的充填率为稳定充填率。充填率q小Q介质之间的作用力就达不到矿料破所需要的能量Q而充填率q大Q需要输入搅拌器的运转功率必加大,耗费不必要的能量Q且较大的充填率加大了{轴的负荷Q易造成转u扭断。生产实践证明:甉|甉||负荷Q只与钢球重量有直接关系Q与矿浆量无明显关系Q当满负药到塔机额定功率Q?120kWӞ甉|gؓ81安培Q按照输出功率≦额定功率的要求,在实际操作中甉|值应于80安培Q按照电g钢球重量的线性关p,当电gؓ80安培Ӟ钢球总重?05 t?/p> <p>生实践证明Q电机功率:1120KWETM1500塔磨?初装钢球95吨,q根据电机电大判断补加钢球,当电小时补加钢球,甉|大时停加钢球Q通过调整塔磨钢球补加量来控制塔磨机合适的充填率的实验定Q在实际生中电gؓ67u2AQ,q徏立塔机钢耗台帐,Ҏ矿l度和效果,l持合理的磨机充填率q进行持l磨机钢耗调整。塔机钢耗调整和控制在:0.2u0.05kg/t。塔机内钢球达Cq和稳定,钢球充填率达?5%为稳定充填率Q经塔磨机的分񔼂剥QŞ成钢球与不同U别矿物的配比和比例Q得塔机的给矉K与排矉K始终保持相对的^衡状态ƈ-325目粒U含量可以稳定的辑ֈ80%以上Q达C程畅、指标稳定?/p> <p>4Q?塔磨板优化技?/p> <p>ETM-1500塔磨机尺ؓ直径3.3m*?4mQ设备重?05tQ我们采用高铬铸铁螺旋衬板代替低铬铸铁螺旋衬板不但提高了衬板的耐磨性,又其有较高的韧性,q衬板的硬度、抗冲击性、耐磨性ƈ与高铬铸铁球相匹配,加之在螺旋衬板与搅拌螺旋之间加厚20cm的橡胶衬垫,廉了衬板用寿命?/p> <p>5. 大红山铁?80万t/a选矿厂高效细新技?/p> <p>׃随着大红山铁矿资源的大量开发和利用Q易选铁矿石来少Q难的低品位铁矿石增多Q随之而来矿石的磨选性越来越差,生成本升高的问题,开展了“塔机闭\矿控制技术”、“塔机充填率优化技术、“塔机衬板优化技术”等pȝ的试验研IӞ开发出“高效细新技术?/p> <p>该技术有效提高了大红山铁?80万t/a选矿厂磨矿细度,降低了钢耗和能耗,提高了铁_品位Q降低了铁精矿中含量,增加了企业效益,寚w低品位铁矿的节能降耗提供了技术借鉴?/p> <p>6Q结?/p> <p>  “大U山铁矿380万t/a选矿厂高效细新技术”应用后Q有效提高了大红山铁?80万t/a选矿厂磨矿细度,降低了钢耗和能耗,提高了铁_品位Q降低了铁精矿中含量,增加了企业效益。大U山铁矿380万t/a选矿厂由立项时的-0.045 mm含量72.25%提高?1.24%。与原设计相比提高了1.24%Q磨机钢耗由原来?.4kg/t原矿下降到目前的0.25kg/t原矿Q磨机电耗由原来?2.89kwh/t下降到目前的8.02kwh/tQ铁_品位qҎ?0.06%提高?0.46%Q硅含量qҎ9.56%下降?.16%Q显著改善选厂l济和技术指标,增加了大U山铁矿的效益,辑ֈ节能降耗的目的Q每q可创造效?500万元以上Q项目实施三q以来新增利?811.15万元Q新增税?87.89万元Q经效益显著?/p> <br> <p></p> <br> <p></p> <p></p> <p style="text-align: left;">作者:金绍?李登?王永?刘洋 陈双云等Q昆明钢铁控股有限公司矿p计研I{)本文发表于《现代矿业?018q第8?/p> <p style="text-align: left;"><a href="http://www.oqcsxq.icu/website/article/1110/65BDF081B1894AEFBFCED0FEC3C3FC60.html" style="margin: 0px; padding: 0px; box-sizing: border-box; background: rgb(255, 255, 255); text-decoration: none; transition: all 0.3s ease-in-out 0s; color: rgb(0, 0, 0); font-family: K�K�, K�K�, SimSun; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><strong style="margin: 0px; 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