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class="enterprise-info-mainbody"> <span id="id" style="display: none;">2500EEB1D0E148CCA4A4B126791EB122</span> <div class="title">高压辊磨工艺在抚罕王毛公铁矉K矿厂设计中的应?/div> <div class="sub-title">2018-11-14</div> <!-- D start --> <div class="introduction"> 高压辊磨工艺在抚罕王毛公铁矉K矿厂设计中的应用中冶沈勘秦皇岛工程设计研究总院有限公司刘贺民专家报? </div> <!-- D start --> <!-- 正文 --> <div class="mainbody"> <div style="display:none"> 高压辊磨工艺在抚罕? 毛公铁矿选矿厂设计中的应? 中冶沈勘U皇岛工E设计研I总院有限公司 副dE师 教授U高? 刘贺?手机18503308615 MQ工程?董一宁代 2 018q?8 ?10 ? 1 高压辊磨工艺q? 高压辊磨机是一U高效破设备, 它利用层压破原理物料在被挤压q? E中颗粒表面和颗_内部生大量微? U,辊磨产品的邦德功指数可大q降低, 能提高后l磨机的处理能力。高压辊? 机具有多少、单位能耗低、占地面 U小、磨损g工作寿命长和q行可靠{? 优点? 高压辊磨可以替代l碎作ؓW三D? 破碎使用Q也可以讑֜l碎作业后作? 细设备用。作为第三段破碎Q辊 前只有_、中两段破碎Q采用该工艺 可以化流E,减少生环节Q有利于 1 高压辊磨工艺q? q面布置Q占用场地少Q但辊磨的给矿粒度偏_,中碎{分? 循环负荷较大Q作为第四段破碎Q可以降低辊的l矿_度Q? 但增加一D늠作业,占用场地大? 辊磨闭\{分产品预选,可采用湿{湿式预选或q筛q式 预选两U方案:湿筛湿式预选工艺,{分效率高,预选效果好 且一般不需要设专门的打散工艺,作业中没有粉污染;采用 q筛q式预选,{分效率低,预选效果差且一般需设打散工艺, 作业中粉较大? 目前国内已有多家选矿厂采用了高压辊磨工艺Q如马钢? 山铁矿凹山选矿厂、抚罕王傲牛铁矉K矿厂、河钢司家营? 山铁矉K矿厂等。其中我公司设计的内蒙温更铁矉K矿? Q? 1350万t/aQ高压辊做W四D超l碎Q抚罕王毛公铁矉K? 矿厂Q?00万t/aQ高压辊做W三D늠代替细,二者均? 用湿{湿式预选工艺,q行效果良好? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 毛公铁矿位于抚顺市抚县x镇景x西北U?kmQ距 抚顺市望花区U?0 km。矿׃ؓ露天开采,原矿_度850?mmQ? 采出的矿石由汽Rq至选矿厂粗中破R间。选矿厂年处理? 铁矿石300万t? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .1 矿石性质(摘自景佳矿区Fe3矿体(阶段 ?勘查报告) 2 .1.1 矿石矿物成分 金属矿物以磁铁矿ZQ含褐铁矿, 量黄铁矿及微量黄铜矿{。脉石以? 英、角闪石、绿泥石ZQ含量透闪矟? 微斜长石及微量磷辉石{矿物? 2 .1.2 矿石l构与构? 矿石为磁铁石英岩Q磁铁矿和脉石石 英呈黑白盔R条带状。结构主要ؓ中细_? 不规则自形粒状变晶结构。构造有致密? 状、条带状及浸染状三种Q以条带状ؓ丅R? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .1.3 矿石铁物相分? ? 矿石铁物相分析结? 矿物名称 含全铁量 Q?Q? 全铁分布率(%Q? 铁? 25.20 2.50 2.50 0.20 1.30 31.70 79.50 7.89 半假象磁铁矿 赤、褐铁矿 酸? 7.89 0.62 酸? 4.10 全铁 100.00 铁ѝ半假象铁矿二者合计铁分布率ؓ87.39%Q属? 生磁铁矿矟? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .2 选矿试验研究和生产实? 2011q?月业L供了《景佳矿(3L体ZK4-6、ZK14-4? 孔综合样)试验室小型试验报告》;2011q?0?8日成都利君提 供了《抚罕王毛公铁矿石高压辊磨试验报告》? 现有毛公、景佳选矿厂均为抚罕王傲牛矿业股份有限公 司的选矿厂,规模分别为年处理原矿40万t?3万t。两个选矿 厂处理的矿石与本ơ设计的毛公选矿厂将来处理的矿石为同一 采区Q矿石磨选特性基本相同。本ơ设计的毛公选矿厂徏成投 产后Q现有毛公、景佳选矿厂因位于开采的矿体上即行拆除? 选矿试验与生产实践主要工艺技术指标汇总见?? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 ? 选矿试验与生产实践主要工艺技术指标汇总表 q选废? 品位 q选矿? 品位 回收? 试验和选矿厂名 U? 原矿品位 产率 %) 回收? 产率 TFe(%) ( TFe(%) TFe (%) (%) TFe (%) TFe (%) 景佳 ?型 选矿 试验 32.26 27.45 23.32 21.59 8.20 ? 4.50 ? 1.14 ? 91.80 ? 34.74 ? 98.86 ? 利君 ?压辊 试 ? 毛公选矿?2011 q?1~9 月生产指? 景佳选矿?2011 q?1~9 月生产指? 8.10 9.54 6.33 5.43 2.20 2.40 91.85 90.46 24.82 23.29 97.80 97.60 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 l表2 选矿试验与生产实践主要工艺技术指标汇总表 矿l度 200 ? %) _ 品位 品位 试验 ?选矿 厂名 U? - 产率 %) 回收? 产率 回收? ( ( TFe (%) TFe (%) (%) TFe (%) TFe (%) 景佳 ?型 选矿 试验 68.00 70.00 64.44 67.37 45.59 33.71 32.24 28.98 66.93 66.73 65.96 66.12 94.58 81.96 91.19 88.75 46.33 66.29 59.66 61.48 2.98 7.47 2.58 3.11 4.28 18.04 6.61 利君 ?压辊 试 ? 毛公选矿?2011 q?1~9 月生产指? 景佳选矿?2011 q?1~9 月生产指? 8.85 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .3 设计程的确? Ҏ高压辊磨试验l果Q本ơ设? 定采用高压辊磨—湿式筛分—湿式预 选工艺? 2 .3.1 破碎pȝ程的确? 鉴于原矿_度850~0mmQ破? _度30~0mmQ破系l采用粗中两D一 闭\工艺程。从现场采场情况看,? 矌多,q选试验和生实践表明采用 q选可抛出8%以上的废矻I因此设计? 虑设大块q选工艺,预选抛除这部分? 矟뀂ؓ保证q选作业效果,本设计将q? 选设|在中碎闭\{分的筛上,_度? ?60~30mm。破系l工艺流E见?? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 原矿 850?mm 产率% 品位% 回收? 图例Q? 100.00 28.91 产量 t/h 6 06.06 100.00 _碎 d=260?mm {?? -30mm +30mm q?? 9 2.00 30.87 98.25 8.00 48.48 6 1.75 .32 中碎 557.58 破碎产品 30?mm 废石 260?0mm ? 破碎pȝ工艺程? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .3.2 辊磨、磨选系l流E的定 Ҏ选矿试验及现场生产情况,设计 定最l磨矿细?200?0%。由于采? 了高压辊工艺,辊磨产品_度-200目含 量达?5~20%左右Q磨矿作业考虑采用一 D늣矿分U工艺,卛_辑ֈ-200?0%? l度? 按毛公铁矉K矿厂的规模Q可考虑? 用一个或两个矿pd。采用一个系列符 合现代矿p备大型化的发展趋势,d 房工备数量少Q操作环节少Q便于生 产管理,本次设计按一个磨矿系列进行? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 设计采用高压辊磨闭\湿式{分—筛 下湿式预选—一D늣矿分U—磁选—浓~? 选—过滤—湿式预选尾矿分U的工艺? E。辊、磨选系l工艺流E见?? ׃采用了辊筛下湿式预选工艺, 可以在入前抛除大量的尾矿,减少了磨 矿能耗,降低选矿成本Q增加了l济效益? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 ? 辊磨、磨选系l工艺流E图 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .4 设计工艺主要技术指? 设计工艺主要技术指标见?? ? 设计工艺主要技术指? 产品名称 ?? TFe产率(%) TFe品位(%) TFe回收?%) q??t) 100.00 8.00 28.91 6.32 100.00 1.75 300.00 24.00 q选废? _?? 39.42 13.50 39.08 66.00 3.80 90.00 1.78 118.26 40.50 _粒U尾? l粒U尾? 选矿? 4.79 6.47 117.24 2.537 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .5 工艺d^? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .6 主要设计特点 Q?Q选矿厂规模ؓ大型Q采用粗、中两段一闭\破碎Q一D闭 路磨矿,一个磨选系列,可节省徏设费用,降低生񔽎理成本? Q?Q破机均采用进口高效、节能大型设备,其它讑֤均采? 国内同类产品中质量好、性能可靠的大型设备,降低生成本? Q?Q采用粗、中后{上块矿q选、高压辊湿式闭路筛分? {下湿式预磁选工艺,入磨矉K65%Q入粒?3mmQ实现多? 磨Q能抛早抛,大幅度降低选矿加工成本? Q?Q磨矿分U采用旋器与细{组合配|,既保证了产品质量Q? 又减了l筛数量? Q?Q高压辊筛下品湿式预选尾矿粗l分U,_粒U尾? 直接排至废石场,廉了尾矿库的用年限? 2 高压辊磨工艺在毛公铁矉K矿厂的设计应用 2 .7 后箋改进 抚顺|王毛公铁矿选矿厂徏成后Q进了若q工Z化? 1Q因实际采出原矿品位发生变化Q增加了对筛下品进行粉 矿干选,提高入磨品位? 2Q增加磁选柱作业铁_品位提高到TFe68%Q进一步提? Q? Q? 了铁_产品的市场竞争力。此外正在开展超U铁_的试? 研究工作? Q? 3Q进一步挖掘能潜力:通过攄高压辊磨后湿式预选给? _度、增加破系l作业时间、增加一个磨矉K别pd{措? 佉K矿厂增?50万t/a原矿处理能力。此部分工作正在由我? 司进行设计,投后预计可大幅提高企业效益? 3 l语 Q?Q采用粗、中两段一闭\破碎程Q破品粒?0~0mmQ? 既可满高压辊磨的入料粒度要求,又能保证高压辊磨辊皮? 正常使用寿命? Q?Q采用高效、节能破设备、大块干选工艺、高压辊湿{? 湿式预磁选工艺等成熟技术,可及时抛除大量废矻I减少入磨 矉KQ降低入粒度,实现低成本处理铁矿石的目的? 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