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border-style: none; border: 0px solid #fff;" src="/website/include/FABED9CE04664969B6B296DF11386194.html"></iframe> <!-- 文章 start--> <div id="n755385212" class="container"> <div id="n755385212" class="enterprise-info-box"> <div id="n755385212" class="enterprise-info-category-descr"> <img src="/resource/website/article/Content/img/enterprise-info-category-descr.jpg" /> <a id="n755385212" href="/index.html">首页</a> >> <a id="n755385212" href="/website/article/11/index.html">文献频道</a> >> <a id="n755385212" href="/website/article/1110/index.html">矿业论文</a> >> 正文 </div> <div id="n755385212" class="enterprise-info-mainbody"> <span id="id" style="display: none;">9278580D00E849F98493A67A4403A0F6</span> <div id="n755385212" class="title">某铁矉K矿物选别效果分析</div> <div id="n755385212" class="sub-title">2019-06-10</div> <!-- D start --> <div id="n755385212" class="introduction"> 某铁矿ؓ解决选矿回收率低及实现增产的目的Q针寚w矿中多种铁矿物选别后回?率差异很大的问题Q对其原ѝ精矿和{进行了物相分析。研I发玎ͼ其中铁矿回收率最高, 而作为流E设计回收主体之一的赤铁矿回收率ƈ不高Q说明该程存在问题Qƈ分析了生原因?同时Q对不是回收设计M且没有在_中富集的矿物q行了定义? </div> <!-- D start --> <!-- 正文 --> <div id="n755385212" class="mainbody"> <div id="n755385212" style="display:none"> Serial No. 601 May. 2019 现ꢀ 代ꢀ 矿ꢀ ? MODERN MINING ȝ 601? 2019 q?5 月第 5 ? 某铁矉K矿物选别效果分析 于忠涛ꢀ q杰ꢀ 于月朋ꢀ 徏? ( 河钢矿业滦县司家营北区分公司) w w 摘ꢀ 要ꢀ 某铁矿ؓ解决选矿回收率低及实现增产的目的,针对铁矿中多U铁矿物选别后回? 率差异很大的问题,对其原矿、精矿和{进行了物相分析?研究发现,其中铁矿回收率最? 而作为流E设计回收主体之一的赤铁矿回收率ƈ不高,说明该流E存在问?q分析了产生原因? 同时,对不是回收设计主体且没有在精矿中富集的矿物进行了定义? 关键词ꢀ 物相分析w 回收率ꢀ 选矿w 附带有用矿物w 反富集ꢀ q生? DOI:10. 3969 / j. issn. 1674-6082. 2019. 05. 078 w w 我国铁矿资源丰富,储量居世界第四位,但我? 脉石矿物以石׃ؓ?其次为阳L,透闪矛_量 角闪矛_辉石?该铁矉K矿工艺程?两段矿 分产品l入_细分,其沉砂重?—弱? 中磁—返回三D늣矿分U后产品再进入粗l分U? 铁矿资源h以下特点:一是铁矿分布广?但又? 寚w?二是贫矿?富矿?三是嵌布_度l?四是 矿石l分复杂?其他矿资源也有cM情况,所? 选矿在我国矿物加工过E中,L非常重要的作用? 选矿是对原矿加工,使有用矿物富集成_? q程?׃原矿中对某种有用元素来说,q不是某 一U矿?它们有些未在_中富?从选矿定义? ?不是有用矿物?但这些矿物在化验?其中的有 用元素在有用成分之中,且在冶炼时也会成为有? 元素,故它们应叫做有用矿物,因此,U它们ؓ附带 有用矿物?定义?在某程_富集q程中含? 能被利用的有用元素的其他非富集矿物称作附带有 用矿物? [ 2] 其溢进行弱—强—阴d反Q? ? 为在赤铁矿精矿中提出铁?对其l合_? 重选精矿分别进行弱?l果见表 1? ?1w 重选精ѝ综合精矿弱选试验结? % 产品名称 重精q_? 重精q? 合计 产率 79. 49 20. 51 100. 00 87. 83 12. 17 100. 00 铁品? 67. 55 45. 44 63. 02 68. 64 44. 64 65. 72 铁回收率 85. 21 14. 79 100. 00 91. 73 8. 27 l精q_? l精q? 合计 100. 00 某铁矿是典型的鞍山式沉积变质矌?上层 铁矿,向下逐渐转变为磁铁矿?所?其赤铁矿 程采用了磁—重—Q联选?选采用了?R p? 列ؓ捕收剂的阴离子反?现在肪酸cM? R 基的捕收? 但通过分析发现,其对赤铁矿的? w w q选精矿应以磁铁矿Z,其尾矿应以赤? 矿ؓ丅R?p 1 可知,通过q选重选精矿弱? 的尾矿率ؓ 20. 51% ,而综合精矿中q选的? 矿率只?12. 17% ;赤铁矿的回收很不理想,回收 率低且铁品位很低? [ 1] 收ƈ不理??所?采用物相分析的方式对其原 ѝ精ѝ尾矿及重选精ѝQ选精矿进行了分析? I? 2 w 铁物相分? 赤铁矿流E精矿由重选精矿与选精矿两部分 l成,现对相关试样q行铁物相分?l果见表 2? w 该选厂l合_由重选精矿和选精矿组? 1 w 程介及_q选分? w 某铁矿矿石矿物组成简?主要为磁铁矿、赤? l合_产率、铁回收率结果见?3,l尾׃强磁 ֒尾l成,两者率结果见?4、表 5? ѝ假象赤铁矿,表层为氧化赤铁矿,深部为磁铁矿? w w ??3 ?? l?_?????????? 8Q?45% ,精中赤铁矿回收率低、中强磁中赤铁 w w 于忠?1987?,?工程?063701 沛_省唐山市滦县响嘡 2 镇? 矿流p多是l精中赤铁矿回收率低的原因? 2 86 w w 于忠涛ꢀ q杰等:某铁矉K矿物选别效果分析w w w w w w w w w w w w w w 2019 q?5 月第 5 ? ?2w 氧化矉K物相分析l果 % 矿分后品再q入_细分,其溢进行弱 —强—阴d反Q选流E?p验室试验可知 矿_度为ꢁ0Q?028 mm 47Q?5% ,q磨D赤铁矿在 一D늣ѝ二D늣矿和旋流器中q行三段反富?? 溢流单体解离度低,选选别隑ֺ?Z_? ?只能连生体甩出,所以Q选流E对赤铁矉K别 效果差? 各物盔R含量 试样 名称 全铁 品位 ? ? 菱铁 ? 赤褐 铁矿 化 ? 酸 ? 酸 ? 原矿混合 23. 67 11. 23 1. 01 9. 97 0. 27 0. 43 0. 47 0. 59 0. 55 0. 27 0. 22 0. 24 0. 76 0. 70 0. 75 0. 70 0. 78 0. 49 0. 51 重精混合 61. 09 35. 71 0. 90 22. 88 0. 43 精混合 66. 87 56. 21 0. 40 8. 47 0. 45 l精 64. 88 49. 13 0. 65 13. 45 0. 40 尾混合 15. 84 7. 72 中强尾 12. 34 1. 13 1. 00 1. 04 1. 03 5. 98 9. 35 9. 04 0. 09 0. 11 0. 10 中强尾赤铁矿率高说明矿石氧化E度? ׃ ??E???? ??????p????? l尾 12. 66 1. 74 [3] ? ,因此,其分选所需要的力差异很大?强磁 ?3w l合_程产率、铁回收? % 性矿物选别需要场Zؓ 0Q?012 5 ~ 0Q?0187 5 kA/ m, 而弱性矿物ؓ 0Q?075 ~ 0Q?225 kA/ m?其中q? 矿物选别场强?2 ?说明q性矿物比化pL 差异x化程度差异对选别场强要求更高?因此? 、强场?选别出的赤铁矿含q生体较? 加大了Q选选别的难度?针对实际情况选厂只能? 当降低场?攑ּ较多的连生体,D中强尾中赤 铁矿占比较大,因此中强尾中赤铁矿失较多? 赤铁矿回收率低的原因之一? 产率 赤铁? 铁品? 赤铁? 铁回收率 产品 名称 赤铁? 铁? 铁? 21. 03 78. 97 铁? 49. 13 13. 45 l精 l尾 21. 09 78. 91 92. 00 18. 00 28. 45 71. 55 1. 74 9. 04 9. 97 原矿混合 100. 00 100. 00 11. 23 100. 00 100. 00 % ?4w _数据分析l果 铁品? 铁回收率 赤铁? 产品名称 产率 赤铁? 铁? 铁? 重精 精 l精 34. 43 65. 57 100. 00 35. 71 56. 21 49. 13 22. 88 8. 47 23. 08 69. 18 16. 66 11. 74 3w lꢀ ? 13. 45 (1)对在有用矿物中掺杂的未进行富集的矿物 q行了定?附带有用矿物为在某流E精矿富集过 E中含有能被利用的有用元素的其他非富集矿物? ?5w 数据分析l果 % 产率 铁品? 产品名称 赤铁? 赤铁? 铁? 90. 74 铁? ( 2)某铁矉K过试验发现,该选矿工艺赤铁? 中强尾 尾混合 l尾 90. 80 9. 20 1. 13 7. 72 1. 74 9. 35 5. 98 9. 04 的回收很不理?铁回收率低且铁品位很?重选精 矿中赤铁矿的回收率明N于Q选精ѝ? 9. 26 100. 00 100. 00 ( 3)精中赤铁矿回收率低、中强磁中赤铁 矿流p多是l精中赤铁矿回收率低的原因? 4)研究未考虑尾再?若考虑尾再选综 w w p 4??5 ?? ?_????????? 6Q?66% , ?_????34Q?43% , ?????? 8Q?39% ;而Q_中赤铁矿回收率?11Q?74% ,精 1 4 ( 中铁矿将q一步降?l精回收率将有所提高? 产率?65Q?57% ,其回收效果ؓ 17Q?90% ,由此可见 选精矿中赤铁矿回收效果远低于重选精ѝ?中强 尾 ???????90Q?80% , ?????? 参ꢀ 考ꢀ 文ꢀ ? [ 1]w 徏?田艳U?孟奥? 铁矿含量对司家营赤铁矿阴离? 反Q选的影响[J]. C矿业,2017(7):215-217. 9 Q?35% ;尾中赤铁矿产率?9Q?20% ,赤铁矿品? ?5Q?98% ;由此可见在选别程中赤铁矿在中强磁 中失较多? [2]w 侯吉?景ꢀ ?贲ꢀ ? 司家营铁矉K选流E工Z化[ J]. 沛_冉,2013(9):131-134. [ 3]w 余永?|积?李养? 白云鄂博中氧化铁矿、稀土选矿? 验研I[J]. 矿业工程,1992,12(1):15-20. 两段矿分产品l入_细分,其沉砂进? 重选流E?׃沉砂单体解离度高,所以重选流E中 赤铁矿回收效果好?—弱—中—返回三D? ( 收稿日期 2019-03-26w 责Q~辑w 袁风? ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■w? 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