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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/11/index.html">文献频道</a> >> <a href="/website/article/1110/index.html">矿业论文</a> >> 正文 </div> <div class="enterprise-info-mainbody"> <span id="id" style="display: none;">65BDF081B1894AEFBFCED0FEC3C3FC60</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">2018-09-17</div> <!-- D start --> <div class="introduction"> 大红山铁?80 万t/ a 选矿厂原矉K品位19Q?45%,主要铁矿物ؓ铁?性铁?总铁?4Q?13%。选矿厂原使用球磨行磨矎쀔分U作?矿l度-0Q?045 mm 72Q?25%,铁精 矿品?0Q?06%,且球机电耗和矿介质钢球消耗较大。通过应用塔磨Z替球机q行?矎쀔分U作?矿产品铁矿单体解d提高?2Q?66%,矿l度-0Q?045 mm 含量提高?81Q?24%,机钢耗由0Q?40 kg/ t 下降?Q?25 kg/ t,机电耗由12Q?89 kWh/ t 下降?Q?02 kWh/ t,?_品位提高?0Q?46%,含量由9Q?56%... </div> <!-- D start --> <!-- 正文 --> <div class="mainbody"> <div style="display:none"> Serial No. 592 August. 2018 现ꢀ 代ꢀ 矿ꢀ ? MODERN MINING ȝ 592? 2018 q?8 月第 8 ? 大红山铁?380 ?t / a 选矿厂塔机应用实践 1 1 1 2 3 金绍?w 李登?w 王永?w 刘ꢀ z?w 陈双? ( 1. 昆明钢铁控股有限公司矿山设计研究?2. 玉溪大红q业有限公?3. 云南泛亚勘探技术有限公? w w 摘ꢀ 要ꢀ 大红山铁?380 ?t/ a 选矿厂原矉K品位 19Q?45% ,主要铁矿物ؓ铁?性铁? 总铁?74Q?13% ?选矿厂原使用球磨行磨矎쀔分U作?矿l度-0Q?045 mm 72Q?25% ,铁精 矿品?60Q?06% ,且球机电耗和矿介质钢球消耗较大?通过应用塔磨Z替球机q行? 矎쀔分U作?矿产品铁矿单体解d提高?82Q?66% ,矿l度-0Q?045 mm 含量提高? 81Q?24% ,机钢耗由 0Q?40 kg / t 下降?0Q?25 kg / t,机电耗由 12Q?89 kWh / t 下降?8Q?02 kWh / t,? _品位提高?60Q?46% ,含量由 9Q?56% 下降?9Q?16% ,l济效益和选矿指标均明显改善? 关键词ꢀ 高效l磨w 塔磨机ꢀ 矿l度w 钢耗ꢀ 电? DOI:10. 3969 / j. issn. 1674w?082. 2018. 08. 005 Application and Practice of Tower Mill in Dahongshan Iron Mine 3. 8 Million t/ a Concentrator 1 1 1 2 3 Jin Shaochun w Li Dengmin w Wang Yongquan w Liu Yang w Chen Shuangyun 1. Mine Design and Research Institute,Kunming Iron And Steel Holding Co. ,Ltd. ; . Yuxi Dahongshan Mining Co. ,Ltd. ;3. Yunnan Fan Asia Exploration Technology Co. ,Ltd. ) ( 2 Abstractw The iron grade of raw ore is 19. 45% in Dahongshan iron mine 3. 8 million t/ a concenw? trator,the main iron ore is magnetite,magnetic iron accounts for 74Q?13% of the total iron. Originally,the concentrator used ball mill to conduct grindingwclassification operation with grinding fineness -0Q?045 mm 72Q?25% ,iron concentrate grade of 60Q?06% and larger consumption of ball mill and grinding medium steel ball. By using tower mill to instead of ball mill for optimization and modification of grindingwclassifiw? cation operation,the dissociation degree of magnetite monomer in grinding products increased to 82. 66% , the grinding fineness -0. 045 mm content improved to 81. 24% ,the mill steel consumption reduced from 0 . 40 kg / t to 0. 25 kg / t,the mill power consumption decreased from 12. 89 kWh / t to 8. 02 kWh / t,and the iron concentrate grade improved to 60. 46% ,silicon content decreased from 9. 56% to 9. 16% ,the ew? conomic benefits and dressing indexes obviously improved. Keywordsw Efficient fine grinding,Tower mill,Grinding fineness,Steel consumption,Power conw? sumption w w 大红山铁矿是昆钢主要的铁矿石原料基地,? 1w 矿石性质 矿d量ؓ 45 825. 34 ?t,是集采矿、选矿、精矿管 道输送和_末冉U技于一体的特大型国有矿׃ 业?选矿厂设计规?380 ?t/ a,原采用球机q行 矿—分U作? 矿产品 - 0. 045 mm 含量 72. 大红山铁矿属熔岩铁矿,矿物l成较ؓ?? 用矿物以铁矿ؓ?赤铁矿少?褐铁ѝ钛铁矿 [ 1] 微量 ?主要金属矿物为磁铁矿、赤铁矿,脉石? 物以长石、石׃ؓ?属粗、细不均匀嵌布的低品位 矿石?铁矿嵌布粒度极不均匀,l粒Uؓ-0. 01 mm,_粒U?1. 5 mm,_度一般ؓ 0. 03 ~ 1. 0 mm? 赤铁矿粒度较l?一般ؓ 0. 02 ~ 0. 07 mm,嵌布于脉 石矿物中,部分构成半假象赤铁矿,氧化E度一般较 ?原矿化学多元素分析结果、铁物相分析l果? 别见?1、表 2,矿物l成分析l果见表 3? 2 6 5% ,目的矿物单体解离度偏?最l铁_品位 0. 06% ,指标Ơ佳?通过应用塔磨机改善磨矿能? 和选矿指标,取得了明昄l济效益,值得其他cM 矿山参考? w w 金绍?1977?,?工程?650302 云南省安宁市? 1 7 ȝ 592 ? C矿业 2018 q?8 月第 8 ? ?1w 矿石化学多元素分析结? % 机@环负荷在 250% 左右,q且可通过 ϕ350 mm ? 器有效调控q入塔磨机的矿浆?从而可以有? 控制矿度?当磨矿浓度ؓ(68u2)% ,旋流器溢 品浓度在(22u2)% ,矿l度-0Q?045 mm _ 含量可以E_?80% 以上? 元素 TFe Fe FeO SiO 2 Al 2 O 3 CaO MgO 0. 97 烧损 4. 15 含量 19. 45 19. 30 8. 14 45. 66 10. 64 2. 82 元素 含量 Cu S P Na 2 O K 2 O TiO 1. 90 2 0. 05 0. 03 0. 15 3. 84 1. 20 ?2w 矿石铁物相分析结? % 相比球磨机闭路磨矎쀔分U流E?塔磨机闭? 矿—分U流E可以有效地提高矿l度、降低能 ?提高铁精矿品位? 铁物? 性铁 赤铁ѝ假象赤铁矿中的? 酸? 酸? 总铁 含量 14. 64 分布? 74. 13 8. 15 1. 61 0. 80 2. 70 4. 05 ( 1)降低能耗的原因?塔磨机工作原理是介质 13. 67 19. 75 100. 00 摩擦物料辑ֈ削作用,塔磨机筒体及衬板不运? 内部物料存在分层分效果,可减过分研?? 机矿原理是介质撞ȝ料达到磨作?内部 物料不存在分层分U效?易造成q分研磨?大红 ????????l????? ???? ?12. 89 kWh / t, ??????8Q?02 kWh / t, ? ?4. 87 kWh / t? ?3w 矿石矿物l成分析 % 矿物 含量 铁分布率 76. 72 11. 88 2. 06 铁? 20. 68 赤铁ѝ假象赤铁矿 褐铁? 3. 72 0. 77 0. 38 0. 06 54. 81 9. 46 4. 20 4. 13 0. 62 0. 75 0. 42 100. 00 钛铁? 0. 69 黄铁? 0. 14 长石、石? 白云? 0. 42 ( 2)提高铁精矿品位的原因?当磨矿细度达? 0Q?045 mm 80% ? ?????????? 2Q?66% ,采用塔磨Z替球机q行l磨,铁精? 1. 71 - l惔? 5. 07 8 白云矟뀁方解石 黑云? 0. 68 0. 45 品位?60Q?06% 提高?60Q?46% ,含量由 9Q?56% ? 降到 9Q?16% ? L? 0. 02 金红矟뀁电气石、绿帘石 合计 0. 16 2 . 2w 降低塔磨机钢? 100. 00 矿介质的耐磨性能高低对磨矿生产v着极ؓ w w ?1、表 2、表 3 表明,矿石 TFe 品位 19Q?45% , 重要的作?提高矿介质度、抗冲击能力、耐磨 性能极ؓ重要?因此在实际细生产中,采用 ϕ20 mm 高铬铔R球替代原 ϕ5 083 mm 溢流型球机? 用的 ϕ40 mm×45 mm×45 mm 低铬铔R钢锻,塔磨? 钢?0Q?25 kg / t, 相比 ?????0Q?4 kg / t, ?? SiO2 、K、Na {含量较?主要铁矿物ؓ铁?铁 矿中的铁占总铁?74Q?13% ,q性的赤铁矿和? 象赤铁矿中铁占总铁?8Q?15% ,酸铁、硅酔R? 比也较大? 2 w 高效l磨工艺 选矿厂原矿经 ϕ8Q?8 m×4Q?8 m 半自机矿? 0 Q?15 kg / t,辑ֈ降低钢耗的目的? . 3w 优化塔磨机充填率 2 q入矿仓,半自机?1 ?3Q?0 m×7Q?3 m 直线振动 {构成闭路磨矎쀔分U系l?采用 3 ?ETMw?500 型塔机?3 l?ϕ350 mm×12 旋流器组构成二段? 路塔系l?塔磨机排矿由渣浆늻入旋器? U?旋流器沉砂返回塔机;溢流ZD塔? 依次q入二、三D늣选机_N?得到铁精?l?3 ? L克筛分?{下q入 ϕ32 m 高效密机浓 机钢球充填率过会耗费不必要的能量,? 大的充填率则会加大{轴负?易扭断{轴?甉| 甉|?负荷)只与钢球质量有直接关p?与矿量 [2] 无明昑օp? ? 生实践证明,甉|功率 1 120 kW ?ETMw? 1 500 塔磨机初装钢?95 t,Ҏ甉|甉|大小判断 补加钢球?通过调整塔磨钢球补加量来控制塔磨 机合适的充填率?实际生?甉| 67u2 A、钢? 充填?75% 时塔机q行较ؓE_, -0Q?45 mm _? U含量达?80% 以上,生񔋹程畅、指标稳定? # ~?_q入搅拌?再进?1 加压늫输送至? 钢炼铁? 2 . 1w 塔磨机闭路磨矿控制技? 选矿厂应?3 ?ETMw?500 塔磨行细? 2 . 4w 塔磨板优? 分别 ?????????矎쀔分 U??E??? 原? 083 mm 溢流型球机的闭路磨矎쀔分U流 E?q根据三选厂矿l度要求控制 ϕ350 mm 旋流 器分U系l?生实践发现,当控?3 l?ϕ350 mm ETMw?500 塔磨机直?3Q?3 m,?14 m,讑֤? ?105 t ,采用高铬铔R螺旋衬板代替低铬铔R? 旋衬?不仅提高了衬板的耐磨?q具有较高的? ?且衬板的度、抗冲击性、耐磨性与高铬铔R? ?匚w。另外在螺旋衬板与搅拌螺( 下{W?0? × 12 旋流器每l运?5u1 支旋器时可以稳定塔? 1 8 </div> <span id="SwfFileUrl" style="display: none;">/pdf/swf/201809/2018_0917_113643_698.swf</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" 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