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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="">中矿癄</a> >> <a href="/website/article/1418/index.html">选矿试验及工?/a> >> <a href="/website/article/141821/index.html">贵金属矿</a> >> 正文 </div> <div class="enterprise-info-mainbody"> <span id="id" style="display: none;">2B8186687D66403C98C3098BEE3FBB2C</span> <div class="title">新疆某金矿水泥微制粒改善矿石渗透性的研究</div> <div class="sub-title">2018-09-18</div> <!-- D start --> <div class="introduction"> 新疆某金矿矿石金品位较低Q属于化物半氧化微细_浸染型低品位金矿石Q在生中采用堆氰化工艺。研I报告显C?减小入堆矿产品_度可以有效提高矿石的浸出率Q但是同时矿石粒度的减小会对矿石渗透性造成不利影响。对该矿矌行系l的试验研究Q探索在矿石产品中添加水泥进行微制粒以改善矿x透性、提高资源综合利用率、节省资金、操作方便的工艺Ҏ? </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  ?nbsp; a</p> <p>新疆某金矿矿石ؓ含金化低品位金矿石Q经q长期的生实践和研I发玎ͼ减小矿石_度可以有效的提高矿x出率Q因此企业通过技术改造增加了高压辊磨讑֤以减入堆矿石的_度。但׃高压辊磨产品中的_矿含量较高Q堆浸场矿堆的渗透性受C重媄响,矿石出速度降低Q生产周期明昑֏ѝ?/p> <p>q年来,我国开展了金矿矛_制粒再入堆堆氰化的工艺研究 Q从制粒Ҏ的选择到试验室柱浸试验、扩大试验直臛_业试验均取得了较好的成果Q目前制_技术也于完善和成熟?/p> <p>Ҏ现场实际生情况Q碎矿品中影响矿石渗透性的主要?200目的_矿Q因此考虑通过向入堆原矿石中添加水泥进行微制粒以改善矿x透性、羃短生产周期的工艺Ҏ?/p> <p>2  矿石性质</p> <p>该矿石中含金化构造岩型金矿石占矿x量?0%以上Q矿石矿物成分比较简单,有用矿物焉。金属矿物以化物ؓ主,氧化物次之。金属矿物中的硫化物以黄铁矿ZQ次为毒砂,量闪锌ѝ方铅矿及微量的黄铜矿;氧化物矿物以褐铁ѝ黄N钒ؓ主,ơؓ铁ѝ白太矿和孔雀矟뀂脉石矿物以矌ZQ含量高?85%?0%Q是脉石中的主要矿物Q次为高岭石、绢云母{?/p> <p>?                           原矿石矿物组?/p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="168"> <p align="center">矿物U类  </p> </td> <td width="145"> <p align="center">含量Q?Q?/p> </td> <td width="157"> <p align="center">矿物U类  </p> </td> <td width="99"> <p align="center">含量Q?Q?/p> </td> </tr> <tr> <td width="168"> <p align="center">褐铁?+黄钾铁矾</p> </td> <td width="145"> <p align="center">2.5</p> </td> <td width="157"> <p align="center">黄铁矿</p> </td> <td width="99"> <p align="center">Q?.01</p> </td> </tr> <tr> <td width="168"> <p align="center">黄铁?</p> </td> <td width="145"> <p align="center">0.6</p> </td> <td width="157"> <p align="center">铁?/p> </td> <td width="99"> <p align="center">Q?.01</p> </td> </tr> <tr> <td width="168"> <p align="center">毒砂  </p> </td> <td width="145"> <p align="center">0.1</p> </td> <td width="157"> <p align="center">矌+玉髓</p> </td> <td width="99"> <p align="center">81.8</p> </td> </tr> <tr> <td width="168"> <p align="center">臭葱?nbsp;  </p> </td> <td width="145"> <p align="center">Q?.1</p> </td> <td width="157"> <p align="center">l云?/p> </td> <td width="99"> <p align="center">10.0 </p> </td> </tr> <tr> <td width="168"> <p align="center">金红?/p> </td> <td width="145"> <p align="center">Q?.1</p> </td> <td width="157"> <p align="center">地开?/p> </td> <td width="99"> <p align="center">5.0 </p> </td> </tr> <tr> <td width="168"> <p align="center">白钛?/p> </td> <td width="145"> <p align="center">Q?.1</p> </td> <td width="157"> <p align="center">甉|石等</p> </td> <td width="99"> <p align="center">Q?.01</p> </td> </tr> </tbody> </table> <p>?                         原矿多元素分析结?nbsp;   </p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="107"> <p align="center">元素</p> </td> <td width="68"> <p align="center">Au(g/t)</p> </td> <td width="68"> <p align="center">Ag(g/t)</p> </td> <td width="68"> <p align="center">Cu</p> </td> <td width="68"> <p align="center">Pb</p> </td> <td width="68"> <p align="center">Zn</p> </td> <td width="68"> <p align="center">Fe </p> </td> <td width="54"> <p align="center">S</p> </td> </tr> <tr> <td width="107"> <p align="center">含量Q?Q?/p> </td> <td width="68"> <p align="center">0.9</p> </td> <td width="68"> <p align="center">5.69</p> </td> <td width="68"> <p align="center">0.0065</p> </td> <td width="68"> <p align="center">0.005</p> </td> <td width="68"> <p align="center">0.013</p> </td> <td width="68"> <p align="center">1.77</p> </td> <td width="54"> <p align="center">0.54</p> </td> </tr> <tr> <td width="107"> <p align="center">元素</p> </td> <td width="68"> <p align="center">As</p> </td> <td width="68"> <p align="center">C</p> </td> <td width="68"> <p align="center">CaO</p> </td> <td width="68"> <p align="center">MgO</p> </td> <td width="68"> <p align="center">Al₂O?/p> </td> <td width="68"> <p align="center">SiO?/p> </td> <td width="54"> <p align="center"> </p> </td> </tr> <tr> <td width="107"> <p align="center">含量Q?Q?/p> </td> <td width="68"> <p align="center">0.045</p> </td> <td width="68"> <p align="center">1.3</p> </td> <td width="68"> <p align="center">4.65</p> </td> <td width="68"> <p align="center">0.13</p> </td> <td width="68"> <p align="center">5.35</p> </td> <td width="68"> <p align="center">81.25</p> </td> <td width="54"> <p align="center"> </p> </td> </tr> </tbody> </table> <p>?                         矿石中金的赋存状?nbsp; </p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="203"> <p align="center">赋存状?/p> </td> <td width="176"> <p align="center">含量Q?Q?/p> </td> <td width="190"> <p align="center">累计含量Q?Q?/p> </td> </tr> <tr> <td width="203"> <p align="center">包裹金(脉石中)</p> </td> <td width="176"> <p align="center">22.75</p> </td> <td width="190"> <p align="center">22.75</p> </td> </tr> <tr> <td width="203"> <p align="center">_间金(脉石_间Q?/p> </td> <td width="176"> <p align="center">70.26</p> </td> <td width="190"> <p align="center">93.01</p> </td> </tr> <tr> <td width="203"> <p align="center">I洞辚w及微裂隙中金</p> </td> <td width="176"> <p align="center">6.99</p> </td> <td width="190"> <p align="center">100</p> </td> </tr> </tbody> </table> <p>通过对该矿石矿物l成以及多元素分析结果可以看出,该矿石中的主要有价元素ؓ金,同时含有量的银Q金银可在氰化浸出的q程中同时回收。而该矿石中包裚w以及_间金的含量?0%以上Q这部分金可以通过减小破碎产品_度Q金颗_能够充分的暴露、解,从而可以顺利与氰化物接触反应,大幅度提高矿石的出率?/p> <p>3  d水惔微制_试验研I?/p> <p>3.1 d水惔微制_的必要?/p> <p>现场实际生中上堆浸出的矿石是经q颚式破机、圆锥破机以及高压辊磨破碎机破的矿石产品。从{析l果来看Q矿石中-200目含量达C11.07%Q粉矿含量较大,若直接堆,׃l粒的迁Ud矿惔的膨胀会堵塞矿堆,使浸出液无法通过矿堆Q堆无法顺利进行。要想矿石的堆浸氰化能够利q行Q必M证浸出液均匀过矿堆Q同时要具备良好的渗透性(卌快的渗透速度Q。但是,如果采用传统的水泥制_工艺,不仅会限制企业的矿石处理能力q会大幅度增加投入的资金和生产成本,因此考虑直接向矿石品中d水惔q补加水分,通过皮带的运输和矿仓中矿石下落的q程辑ֈ搅拌矿石的效果,从而达到水泥微制粒、改善矿x透性的目的?/p> <p>3.2 d水惔微制_柱试?/p> <p>3.2.1试验原料</p> <p>试验原料Z堆原矿石Q矿矛_水分2%Q矿石粒度构成见?4?/p> <p>?                          矿石_度{析l果 </p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="185"> <p align="center">_QmmQ?/p> </td> <td width="219"> <p align="center">产率Q?Q?/p> </td> <td width="165"> <p align="center">负篏U率(%Q?/p> </td> </tr> <tr> <td width="185"> <p align="center">+10</p> </td> <td width="219"> <p align="center">3.24 </p> </td> <td width="165"> <p align="center">100.00 </p> </td> </tr> <tr> <td width="185"> <p align="center">-10+8</p> </td> <td width="219"> <p align="center">3.39 </p> </td> <td width="165"> <p align="center">96.76 </p> </td> </tr> <tr> <td width="185"> <p align="center">-8+6.3</p> </td> <td width="219"> <p align="center">5.56 </p> </td> <td width="165"> <p align="center">93.37 </p> </td> </tr> <tr> <td width="185"> <p align="center">-6.3+5.5</p> </td> <td width="219"> <p align="center">3.69 </p> </td> <td width="165"> <p align="center">87.81 </p> </td> </tr> <tr> <td width="185"> <p align="center">-5.5+3.2</p> </td> <td width="219"> <p align="center">9.69 </p> </td> <td width="165"> <p align="center">84.12 </p> </td> </tr> <tr> <td width="185"> <p align="center">-3.2+1.6</p> </td> <td width="219"> <p align="center">15.24 </p> </td> <td width="165"> <p align="center">74.43 </p> </td> </tr> <tr> <td width="185"> <p align="center">-1.6+0.6</p> </td> <td width="219"> <p align="center">24.52 </p> </td> <td width="165"> <p align="center">59.19 </p> </td> </tr> <tr> <td width="185"> <p align="center">-0.6+0.355</p> </td> <td width="219"> <p align="center">10.54 </p> </td> <td width="165"> <p align="center">34.67 </p> </td> </tr> <tr> <td width="185"> <p align="center">-0.355+0.15</p> </td> <td width="219"> <p align="center">6.37 </p> </td> <td width="165"> <p align="center">24.13 </p> </td> </tr> <tr> <td width="185"> <p align="center">-0.15+0.074</p> </td> <td width="219"> <p align="center">6.69 </p> </td> <td width="165"> <p align="center">17.76 </p> </td> </tr> <tr> <td width="185"> <p align="center">-0.074</p> </td> <td width="219"> <p align="center">11.07 </p> </td> <td width="165"> <p align="center">11.07 </p> </td> </tr> <tr> <td width="185"> <p align="center">合计</p> </td> <td width="219"> <p align="center">100.00 </p> </td> <td width="165"> <p align="center"> </p> </td> </tr> </tbody> </table> <p>可以看出矿石_度UؓPQ?0Q≤4.5mm左右Q其?100目含量约?7%左右Q?200目含量约?1%左右Q分析认矿石中粉矿的来源主要有两部分Q一部分是原生矿泥即原矿石中所含的高岭土、云母等矿物Q另一部分则是在矿石破过E中C生的ơ生矿惔Q这些粉矿是影响矿石渗透性的主要因素?/p> <p>3.2.2试验Ҏ</p> <p>制粒ҎQh工添加水泥、石灰及补加水分Q制_吨矿水耗约0.04m/t,然后q行人工搅拌Q水惔及石C矿石混匀后装入直径ؓΦ300mmQ高?m的PVC柱浸道Q采用滴淋方式添加药剂?/p> <p>3.2.3试验条g</p> <p>p行七l柱试验,对不同水泥、石灰的用量q行ҎQ具体见?5。本ơ试验采用同一批矿x品,各组矿石重量?0Kg,原矿矛_位ؓ0.80g/t,原矿矛_?.5%Q后l补加至5.5%Q试验共q行30天?/p> <p>?                            试验分组及条?/p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="559"> <tbody> <tr> <td width="76"> <p align="center">l别</p> </td> <td width="121"> <p align="center">水惔用量QKg/tQ?/p> </td> <td width="121"> <p align="center">石灰用量QKg/tQ?/p> </td> <td width="121"> <p align="center">滴淋强度QL/h*㎡)</p> </td> <td width="121"> <p align="left">试验旉QdQ?/p> </td> </tr> <tr> <td width="76"> <p align="center">1</p> </td> <td width="121"> <p align="center">\</p> </td> <td width="121"> <p align="center">5.0 </p> </td> <td width="121"> <p align="center">10.0 </p> </td> <td width="121"> <p align="center">60</p> </td> </tr> <tr> <td width="76"> <p align="center">2</p> </td> <td width="121"> <p align="center">3.0 </p> </td> <td width="121"> <p align="center">5.0 </p> </td> <td width="121"> <p align="center">10.0 </p> </td> <td width="121"> <p align="center">60</p> </td> </tr> <tr> <td width="76"> <p align="center">3</p> </td> <td width="121"> <p align="center">4.0 </p> </td> <td width="121"> <p align="center">5.0 </p> </td> <td width="121"> <p align="center">10.0 </p> </td> <td width="121"> <p align="center">60</p> </td> </tr> <tr> <td width="76"> <p align="center">4</p> </td> <td width="121"> <p align="center">5.0 </p> </td> <td width="121"> <p align="center">5.0 </p> </td> <td width="121"> <p align="center">10.0 </p> </td> <td width="121"> <p align="center">60</p> </td> </tr> <tr> <td width="76"> <p align="center">5</p> </td> <td width="121"> <p align="center">4.0 </p> </td> <td width="121"> <p align="center">3.0 </p> </td> <td width="121"> <p align="center">10.0 </p> </td> <td width="121"> <p align="center">60</p> </td> </tr> <tr> <td width="76"> <p align="center">6</p> </td> <td width="121"> <p align="center">4.0 </p> </td> <td width="121"> <p align="center">4.0 </p> </td> <td width="121"> <p align="center">10.0 </p> </td> <td width="121"> <p align="center">60</p> </td> </tr> <tr> <td width="76"> <p align="center">7</p> </td> <td width="121"> <p align="center">4.0 </p> </td> <td width="121"> <p align="center">5.0 </p> </td> <td width="121"> <p align="center">10.0 </p> </td> <td width="121"> <p align="center">60</p> </td> </tr> </tbody> </table> <p>准确记录试验开始及׃底部出液出水时_以此计算各组试验的渗透速度Q在试验q行期间Q每天取出贉|样品化验其中的金品位直至贉|品位不再l箋上升后改用清水连l三天进行滴淋洗矿作业,z矿l束后进行卸料ƈ对尾矿进行取样分析,以此计算各组试验的实际浸出率?/p> <p>3.2.4试验l果</p> <p>?                           柱浸试验l果</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="559"> <tbody> <tr> <td width="156"> <p align="center">l别</p> </td> <td width="198"> <p align="center">渗透速度Qm/hQ?/p> </td> <td width="205"> <p align="center">出率(%Q?/p> </td> </tr> <tr> <td width="156"> <p align="center">1</p> </td> <td width="198"> <p align="center">0.07</p> </td> <td width="205"> <p align="center">67.80 </p> </td> </tr> <tr> <td width="156"> <p align="center">2</p> </td> <td width="198"> <p align="center">0.14</p> </td> <td width="205"> <p align="center">68.06 </p> </td> </tr> <tr> <td width="156"> <p align="center">3</p> </td> <td width="198"> <p align="center">0.16</p> </td> <td width="205"> <p align="center">67.96 </p> </td> </tr> <tr> <td width="156"> <p align="center">4</p> </td> <td width="198"> <p align="center">0.16</p> </td> <td width="205"> <p align="center">67.92 </p> </td> </tr> <tr> <td width="156"> <p align="center">5</p> </td> <td width="198"> <p align="center">0.16</p> </td> <td width="205"> <p align="center">68.12 </p> </td> </tr> <tr> <td width="156"> <p align="center">6</p> </td> <td width="198"> <p align="center">0.17</p> </td> <td width="205"> <p align="center">67.80 </p> </td> </tr> <tr> <td width="156"> <p align="center">7</p> </td> <td width="198"> <p align="center">0.16</p> </td> <td width="205"> <p align="center">67.88 </p> </td> </tr> </tbody> </table> <p>可以看出在添加水泥对矿石q行微制_以后,矿石渗透性得C极大改善Q渗透速度能够提高一倍以上,q且通过试验q程中的观察发现Q第一l试验中矿石表面出现了少量积_而其他组别的矿石表面均未出现U水现象。从节约成本、提升经效益的角度出发Q选择W五l试验条Ӟ水惔4.0Kg/t,石灰3.0Kg/t,矿石含水5.5%Q进行下一步的极限滴淋强度试试验?/p> <p>3.2.5极限滴淋强度定试验</p> <p>定d水惔q行微制_后矿石的极限滴淋强度,对实际生产有着很重要的指导意义?/p> <p>本次试验依旧采用柱浸试验的方式进行,采用同一批矿x品,各组矿石重量?0Kg,石灰d量ؓ3Kg/t,水惔d?Kg/tQ分为四l进行,通过调节各组试验滴淋液的滴淋强度Q观察矿矌面是否出现积水现象来定q行微制_后矿石可以辑ֈ的极限滴淋强度,具体l果如下Q?/p> <p>?                            极限滴淋强度定l果</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="167"> <p align="center">l别</p> </td> <td width="236"> <p align="center">滴淋强度QL/h*㎡)</p> </td> <td width="167"> <p align="center">是否出现U水</p> </td> </tr> <tr> <td width="167"> <p align="center">1</p> </td> <td width="236"> <p align="center">15</p> </td> <td width="167"> <p align="center">?/p> </td> </tr> <tr> <td width="167"> <p align="center">2</p> </td> <td width="236"> <p align="center">20</p> </td> <td width="167"> <p align="center">?/p> </td> </tr> <tr> <td width="167"> <p align="center">3</p> </td> <td width="236"> <p align="center">25</p> </td> <td width="167"> <p align="center">?/p> </td> </tr> <tr> <td width="167"> <p align="center">4</p> </td> <td width="236"> <p align="center">30</p> </td> <td width="167"> <p align="center">量U水</p> </td> </tr> </tbody> </table> <p>可以看出在进行水泥微制粒加工后,试验室中矿石的极限滴淋强度可以达?5L/h*㎡以上,而考虑到实际生产中q矿车辆对矿堆的压实作用及其他因素,采用15-20L/h*㎡的滴淋强度q行生?/p> <p>3.3 d水惔微制_工业试?/p> <p>一pd柱浸试验l果为工业试验提供了可靠的工艺参敎ͼ工业试验设计每个试验堆场面积?8×15cI堆高2c뀂堆场的底面用推土机֎数次Q底垫ؓ一层彩条布和一层塑料薄膜及一层土工布Q可有效防止渗漏?/p> <p>3.3.1工业试验条g</p> <p>矿石从筛? 破碎- 制粒 - {堆采用的是机械化作?Q无法准计矿量,在现场通过Ҏ辆运矿R辆所载矿矛_别进行地称重、取L后汇d出准的入堆矿石总量、矿矛_位以及矿矛_水率{数据?/p> <p>?                             工业试验条g</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="60" rowspan="2"> <p align="center">l别</p> </td> <td width="62"> <p align="center">矉K</p> </td> <td width="51"> <p align="center">堆高</p> </td> <td width="71"> <p align="center">原矿品位</p> </td> <td width="72"> <p align="center">石灰用量</p> </td> <td width="67"> <p align="center">水惔用量</p> </td> <td width="80"> <p align="center">滴淋强度</p> </td> <td width="106"> <p align="center">试验旉</p> </td> </tr> <tr> <td width="62"> <p align="center">(t)</p> </td> <td width="51"> <p align="center">(m)</p> </td> <td width="71"> <p align="center">Qg/tQ?/p> </td> <td width="72"> <p align="center">QKg/tQ?/p> </td> <td width="67"> <p align="center">QKg/tQ?/p> </td> <td width="80"> <p align="center">QL/h*㎡)</p> </td> <td width="106"> <p align="center">QdQ?/p> </td> </tr> <tr> <td width="60"> <p align="center">1</p> </td> <td width="62"> <p align="center">386.59 </p> </td> <td width="51"> <p align="center">2.0 </p> </td> <td width="71"> <p align="center">0.76</p> </td> <td width="72"> <p align="center">3.0 </p> </td> <td width="67"> <p align="center">\</p> </td> <td width="80"> <p align="center">10--15</p> </td> <td width="106"> <p align="center">60</p> </td> </tr> <tr> <td width="60"> <p align="center">2</p> </td> <td width="62"> <p align="center">398.78 </p> </td> <td width="51"> <p align="center">2.0 </p> </td> <td width="71"> <p align="center">0.78</p> </td> <td width="72"> <p align="center">3.0 </p> </td> <td width="67"> <p align="center">4.0 </p> </td> <td width="80"> <p align="center">10--15</p> </td> <td width="106"> <p align="center">60</p> </td> </tr> </tbody> </table> <p> </p> <p>?                        工业试验堆场矿石_度构成</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="168"> <p align="center">_QmmQ?/p> </td> <td width="168"> <p align="center">产率Q?Q?/p> </td> <td width="233"> <p align="center">累积产率Q?Q?/p> </td> </tr> <tr> <td width="168"> <p align="center">+10</p> </td> <td width="168"> <p align="center">2.20 </p> </td> <td width="233"> <p align="center">2.20 </p> </td> </tr> <tr> <td width="168"> <p align="center">-10+8</p> </td> <td width="168"> <p align="center">2.90 </p> </td> <td width="233"> <p align="center">5.10 </p> </td> </tr> <tr> <td width="168"> <p align="center">-8+6.3</p> </td> <td width="168"> <p align="center">4.60 </p> </td> <td width="233"> <p align="center">9.70 </p> </td> </tr> <tr> <td width="168"> <p align="center">-6.3+5.5</p> </td> <td width="168"> <p align="center">5.40 </p> </td> <td width="233"> <p align="center">15.10 </p> </td> </tr> <tr> <td width="168"> <p align="center">-5.5+3.2</p> </td> <td width="168"> <p align="center">10.40 </p> </td> <td width="233"> <p align="center">25.50 </p> </td> </tr> <tr> <td width="168"> <p align="center">-3.2+1.6</p> </td> <td width="168"> <p align="center">15.86 </p> </td> <td width="233"> <p align="center">41.36 </p> </td> </tr> <tr> <td width="168"> <p align="center">-1.6+0.6</p> </td> <td width="168"> <p align="center">24.68 </p> </td> <td width="233"> <p align="center">66.04 </p> </td> </tr> <tr> <td width="168"> <p align="center">-0.6+0.355</p> </td> <td width="168"> <p align="center">10.20 </p> </td> <td width="233"> <p align="center">76.24 </p> </td> </tr> <tr> <td width="168"> <p align="center">-0.355+0.15</p> </td> <td width="168"> <p align="center">6.43 </p> </td> <td width="233"> <p align="center">82.67 </p> </td> </tr> <tr> <td width="168"> <p align="center">-0.15+0.074</p> </td> <td width="168"> <p align="center">6.21 </p> </td> <td width="233"> <p align="center">88.88 </p> </td> </tr> <tr> <td width="168"> <p align="center">-0.074</p> </td> <td width="168"> <p align="center">11.12 </p> </td> <td width="233"> <p align="center">100.00 </p> </td> </tr> <tr> <td width="168"> <p align="center">合计</p> </td> <td width="168"> <p align="center">100.00 </p> </td> <td width="233"> <p align="center"> </p> </td> </tr> </tbody> </table> <p>3.3.2工业试验q程</p> <p>配制5/万的NaCN溶液q行滴淋试验Q滴淋工作制度ؓq箋性滴淋,出液经zL炭吔R后根据剩余氰Ҏ度补加药剂后q回矿堆再次q行滴淋作业Q期间根据实际需要补加水量。滴淋强度控制在10-12L/(h*㎡),吔R讑֤?个?400mm×1.7m聚丙乙烯塑料圆柱形吸附塔串联而成 ?/p> <p>在吸附过E中采用q箋取样法,分别Ҏ天的出贉|和吸附后的液进行取样化验计金的浸出率及吸附率q据此绘制理论浸出率变化曲线。试验进行至50天时Q贵液品位已降至0.08mg/LQ连l观察五天,出液品位不再变化后采用清水对矿堆进行洗堆,反复q行五天后在矿堆上按?.5×2.5m的密度采用网格法对尾矿进行取P以加权^均法计算出尾矿的最l品位,以此计算矿石的实际浸出率?/p> <p>?1                            工业试验堆场出率曲U?/p> <p><img style="vertical-align: middle; width: 530px; height: 232px;" id="图表 2" src="/ewebeditor/uploadfile/20180918151828633001.png"></p> <p>3.3.3工业试验l果</p> <p>?0                            工业试验l果</p> <table style="border-collapse:collapse;" border="1" bordercolor="#000000" cellspacing="0" cellpadding="0" width="569"> <tbody> <tr> <td width="148"> <p align="center">l别</p> </td> <td width="150"> <p align="center">原矿品位Qg/tQ?/p> </td> <td width="130"> <p align="center">渣品位Qg/tQ?/p> </td> <td width="141"> <p align="center">出率(%Q?/p> </td> </tr> <tr> <td width="148"> <p align="center">1</p> </td> <td width="150"> <p align="center">0.76</p> </td> <td width="130"> <p align="center">0.25</p> </td> <td width="141"> <p align="center">67.11</p> </td> </tr> <tr> <td width="148"> <p align="center">2</p> </td> <td width="150"> <p align="center">0.78</p> </td> <td width="130"> <p align="center">0.25</p> </td> <td width="141"> <p align="center">67.95</p> </td> </tr> </tbody> </table> <p>在试验过E中Q现察到在滴淋强度基本一致的情况?#矿堆表面出现了明昄U水现象Q?#矿堆表面几乎没有出现U水Q说明经q微制粒的矿x透性得C极大的改善、浸出液可以均匀快速的过矿堆。而且通过理论出率曲U可以看出添加了水惔q行q微制粒?#矿堆出速度明显快于1#矿堆Q能够达到加快浸出速度、羃短生产周期的目的。两l试验最l浸出率几乎相同Q说明添加水泥进行微制粒对原矿石的浸出效果没有不利媄响?/p> <p>4 l语</p> <p>新疆某金矿矿石经q多U破处理,减小入堆矿石_度辑ֈPQ?0Q≤4.5mm时可以有效提高矿石的出率,但矿石中-200目含量增加到11%左右Q严重媄响了矿堆的渗透性。通过在上堆矿石的q输皮带上直接添?Kg/t水惔?Kg/t石灰q补加适量水分q行微制_后可以有效的降?200目的_矿对矿x透性的影响Q加快矿石的出速度Q羃短生产周期。该工艺目投资、流E简单,采用的水泥市场易购、hg宜,有利于降低生产成本,改善生情况?/p> <p> </p> <p style="text-align: left;">作者:金琪琻I新疆金川矿业有限公司Q本文发表于《现代矿业?018q第8?/p> <p style="text-align: left;"><a href="http://www.iyzxrx.icu/website/article/1110/E8CA3A439DF54C81ABF20C20EED6504E.html" style="margin: 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