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Aiming at problems including low content of magnetic iron, fine dissemination size and high content of ferrous silicate in processing of the amphibole-type primary ore in Yuanjiacun Iron Mine, an experimental study was carried out by adopting a pre-concentration process consisting of fine crushing plus dry magnetic pulley separation and a roll grinding plus wet magnetic separation. The pre-enriched concentrate was then processed with a flowsheet including a three-stage grinding, a three-stage low-intensity magnetic separation and a reverse flotation, resulting in an iron concentrate grading 65.66% TFe at 49.31% recovery, with the yield of 21.45%. It is shown that iron resource can be utilized efficiently.
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针对袁家村铁矿闪石型原生矿存在的磁性铁占比低、嵌布粒度微细、硅酸铁含量高等问题,进行了选矿试验研究。预选采用细碎-磁滑轮干选和辊磨-湿式磁选,预选精矿经三段磨矿、三段弱磁选、反浮选流程,获得了产率21.45%、TFe品位65.66%、回收率49.31%的铁精矿,实现了资源高效利用。
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, authorsList=魏宇峰)}, authors=[Author(id=1241406730844828533, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=tisco724@foxmail.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241406730945491840, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, authorId=1241406730844828533, language=EN, stringName=Yufeng WEI, firstName=Yufeng, middleName=null, lastName=WEI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=LAN County Mining Co, Ltd, of TISCO Group, Lan County 033500, Shanxi, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241406731067126665, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, authorId=1241406730844828533, language=CN, stringName=魏宇峰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=太钢集团岚县矿业有限公司,山西 岚县 033500, bio={"content":"
魏宇峰(1988—),男,内蒙古凉城人,工程师,主要从事微细粒难选矿选矿技术工作。E-mail:tisco724@foxmail.com
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魏宇峰(1988—),男,内蒙古凉城人,工程师,主要从事微细粒难选矿选矿技术工作。E-mail:tisco724@foxmail.com
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43(3): 93-96., articleTitle=袁家村铁矿闪石型磁铁矿高压辊磨及阶磨阶选工艺技术研究, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1241406730714805097, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, xref=null, ext=[AuthorCompanyExt(id=1241406730723193706, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, companyId=1241406730714805097, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=LAN County Mining Co, Ltd, of TISCO Group, Lan County 033500, Shanxi, China), AuthorCompanyExt(id=1241406730727388011, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, companyId=1241406730714805097, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=太钢集团岚县矿业有限公司,山西 岚县 033500)])], figs=[ArticleFig(id=1241406734581952548, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=EN, label=null, caption=null, figureFileSmall=IxLXBE4q4dVfGeRV+KvPEQ==, figureFileBig=mdtCCoPda7epCwvsNkvtSg==, tableContent=null), ArticleFig(id=1241406734665838632, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=CN, label=图1, caption=
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粗粒干选和细粒湿式预选、三段磨矿-三段弱磁选流程, figureFileSmall=CVF/m5zF/R3EptKPrbVsFw==, figureFileBig=xUv/0HL1rzd16F+JEGBcFw==, tableContent=null), ArticleFig(id=1241406735106240581, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=EN, label=null, caption=null, figureFileSmall=foHCH8KTBc7FYFPfor/LUg==, figureFileBig=PTXwGvYAnhSlOwJ7o6x+Mw==, tableContent=null), ArticleFig(id=1241406735223681098, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=CN, label=图3, caption=
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全流程试验数质量流程, figureFileSmall=uUbitPPn9O6hG2MKWWfGrQ==, figureFileBig=sulY0HrJiG+ZRtB+408HuA==, tableContent=null), ArticleFig(id=1241406735550836835, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| TFe | FeO | Fe2O3 | TiO2 | SiO2 | Al2O3 | CaO | MgO |
| 28.56 | 13.81 | 25.46 | 0.09 | 49.65 | 1.25 | 1.99 | 2.21 |
| MnO | K2O | Na2O | P | S | C | 烧失 | |
| 0.11 | 0.19 | 0.1 | 0.05 | 0.12 | 0.67 | 1.87 | |
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原矿化学多元素分析结果(质量分数)
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| TFe | FeO | Fe2O3 | TiO2 | SiO2 | Al2O3 | CaO | MgO |
| 28.56 | 13.81 | 25.46 | 0.09 | 49.65 | 1.25 | 1.99 | 2.21 |
| MnO | K2O | Na2O | P | S | C | 烧失 | |
| 0.11 | 0.19 | 0.1 | 0.05 | 0.12 | 0.67 | 1.87 | |
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| 铁物相 | 含量/% | 分布率/% |
|---|
| 磁铁矿中铁 | 16.66 | 58.33 |
| 假象赤铁矿中铁 | 0.92 | 3.22 |
| 赤(褐)铁矿中铁 | 6.08 | 21.29 |
| 碳酸盐中铁 | 0.29 | 1.02 |
| 硫化物中铁 | 0.10 | 0.35 |
| 硅酸盐中铁 | 4.51 | 15.79 |
| 合计 | 28.56 | 100.00 |
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原矿铁化学物相分析结果
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| 铁物相 | 含量/% | 分布率/% |
|---|
| 磁铁矿中铁 | 16.66 | 58.33 |
| 假象赤铁矿中铁 | 0.92 | 3.22 |
| 赤(褐)铁矿中铁 | 6.08 | 21.29 |
| 碳酸盐中铁 | 0.29 | 1.02 |
| 硫化物中铁 | 0.10 | 0.35 |
| 硅酸盐中铁 | 4.51 | 15.79 |
| 合计 | 28.56 | 100.00 |
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| 磁铁矿 | 赤(褐)铁矿 | 菱铁矿 | 黄铁矿 | 石英 | 长石 | 云母 |
| 23.57 | 9.85 | 0.34 | 0.22 | 43.54 | 0.57 | 0.41 |
| 铁闪石 | 方解石及白云石 | 绿泥石 | 辉石 | 磷灰石 | 滑石 | 其他 |
| 17.42 | 2.08 | 2.01 | 0.35 | 0.11 | 0.13 | 0.2 |
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原矿主要矿物组成及含量(质量分数)
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| 磁铁矿 | 赤(褐)铁矿 | 菱铁矿 | 黄铁矿 | 石英 | 长石 | 云母 |
| 23.57 | 9.85 | 0.34 | 0.22 | 43.54 | 0.57 | 0.41 |
| 铁闪石 | 方解石及白云石 | 绿泥石 | 辉石 | 磷灰石 | 滑石 | 其他 |
| 17.42 | 2.08 | 2.01 | 0.35 | 0.11 | 0.13 | 0.2 |
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| 粒径/mm | 产率/% |
|---|
| 粒级 | 正累计 |
|---|
| +0.42 | 2.74 | 2.74 |
| -0.42+0.30 | 5.92 | 8.66 |
| -0.30+0.21 | 8.84 | 17.50 |
| -0.21+0.15 | 12.44 | 29.94 |
| -0.15+0.105 | 15.76 | 45.70 |
| -0.105+0.074 | 13.81 | 59.51 |
| -0.074+0.052 | 12.69 | 72.20 |
| -0.052+0.037 | 10.15 | 82.35 |
| -0.037+0.026 | 8.03 | 90.38 |
| -0.026+0.019 | 5.79 | 96.17 |
| -0.019+0.013 | 2.41 | 98.58 |
| -0.013+0.010 | 0.75 | 99.33 |
| -0.010+0.005 | 0.47 | 99.80 |
| -0.005 | 0.20 | 100.00 |
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原矿嵌布粒度
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| 粒径/mm | 产率/% |
|---|
| 粒级 | 正累计 |
|---|
| +0.42 | 2.74 | 2.74 |
| -0.42+0.30 | 5.92 | 8.66 |
| -0.30+0.21 | 8.84 | 17.50 |
| -0.21+0.15 | 12.44 | 29.94 |
| -0.15+0.105 | 15.76 | 45.70 |
| -0.105+0.074 | 13.81 | 59.51 |
| -0.074+0.052 | 12.69 | 72.20 |
| -0.052+0.037 | 10.15 | 82.35 |
| -0.037+0.026 | 8.03 | 90.38 |
| -0.026+0.019 | 5.79 | 96.17 |
| -0.019+0.013 | 2.41 | 98.58 |
| -0.013+0.010 | 0.75 | 99.33 |
| -0.010+0.005 | 0.47 | 99.80 |
| -0.005 | 0.20 | 100.00 |
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| NaOH用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 300 | 精矿 | 74.90 | 65.18 | 81.96 |
| 尾矿 | 25.10 | 42.82 | 18.04 |
| 给矿 | 100.00 | 59.57 | 100.00 |
| 400 | 精矿 | 74.97 | 66.14 | 83.60 |
| 尾矿 | 25.03 | 38.88 | 16.40 |
| 给矿 | 100.00 | 59.32 | 100.00 |
| 500 | 精矿 | 74.90 | 66.52 | 83.64 |
| 尾矿 | 25.10 | 38.84 | 16.36 |
| 给矿 | 100.00 | 59.57 | 100.00 |
| 600 | 精矿 | 75.16 | 66.06 | 83.00 |
| 尾矿 | 24.84 | 40.95 | 17.00 |
| 给矿 | 100.00 | 59.82 | 100.00 |
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NaOH用量试验结果
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| NaOH用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 300 | 精矿 | 74.90 | 65.18 | 81.96 |
| 尾矿 | 25.10 | 42.82 | 18.04 |
| 给矿 | 100.00 | 59.57 | 100.00 |
| 400 | 精矿 | 74.97 | 66.14 | 83.60 |
| 尾矿 | 25.03 | 38.88 | 16.40 |
| 给矿 | 100.00 | 59.32 | 100.00 |
| 500 | 精矿 | 74.90 | 66.52 | 83.64 |
| 尾矿 | 25.10 | 38.84 | 16.36 |
| 给矿 | 100.00 | 59.57 | 100.00 |
| 600 | 精矿 | 75.16 | 66.06 | 83.00 |
| 尾矿 | 24.84 | 40.95 | 17.00 |
| 给矿 | 100.00 | 59.82 | 100.00 |
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| SD用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 600 | 精矿 | 72.71 | 65.62 | 79.60 |
| 尾矿 | 27.29 | 44.82 | 20.40 |
| 给矿 | 100.00 | 59.94 | 100.00 |
| 800 | 精矿 | 74.90 | 66.52 | 83.64 |
| 尾矿 | 25.10 | 38.84 | 16.36 |
| 给矿 | 100.00 | 59.57 | 100.00 |
| 1 000 | 精矿 | 76.83 | 66.02 | 85.00 |
| 尾矿 | 23.17 | 38.63 | 15.00 |
| 给矿 | 100.00 | 59.67 | 100.00 |
| 1 200 | 精矿 | 77.74 | 65.46 | 85.60 |
| 尾矿 | 22.26 | 38.45 | 14.40 |
| 给矿 | 100.00 | 59.45 | 100.00 |
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SD用量试验结果
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| SD用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 600 | 精矿 | 72.71 | 65.62 | 79.60 |
| 尾矿 | 27.29 | 44.82 | 20.40 |
| 给矿 | 100.00 | 59.94 | 100.00 |
| 800 | 精矿 | 74.90 | 66.52 | 83.64 |
| 尾矿 | 25.10 | 38.84 | 16.36 |
| 给矿 | 100.00 | 59.57 | 100.00 |
| 1 000 | 精矿 | 76.83 | 66.02 | 85.00 |
| 尾矿 | 23.17 | 38.63 | 15.00 |
| 给矿 | 100.00 | 59.67 | 100.00 |
| 1 200 | 精矿 | 77.74 | 65.46 | 85.60 |
| 尾矿 | 22.26 | 38.45 | 14.40 |
| 给矿 | 100.00 | 59.45 | 100.00 |
), ArticleFig(id=1241406737794789551, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| CaO用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 0 | 精矿 | 73.79 | 65.32 | 80.97 |
| 尾矿 | 26.21 | 43.22 | 19.03 |
| 给矿 | 100.00 | 59.53 | 100.00 |
| 150 | 精矿 | 74.52 | 66.82 | 83.45 |
| 尾矿 | 25.48 | 38.74 | 16.55 |
| 给矿 | 100.00 | 59.66 | 100.00 |
| 300 | 精矿 | 75.78 | 66.01 | 84.24 |
| 尾矿 | 24.22 | 38.63 | 15.76 |
| 给矿 | 100.00 | 59.38 | 100.00 |
| 450 | 精矿 | 77.74 | 65.46 | 85.60 |
| 尾矿 | 22.26 | 38.45 | 14.40 |
| 给矿 | 100.00 | 59.45 | 100.00 |
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CaO用量试验结果
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| CaO用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 0 | 精矿 | 73.79 | 65.32 | 80.97 |
| 尾矿 | 26.21 | 43.22 | 19.03 |
| 给矿 | 100.00 | 59.53 | 100.00 |
| 150 | 精矿 | 74.52 | 66.82 | 83.45 |
| 尾矿 | 25.48 | 38.74 | 16.55 |
| 给矿 | 100.00 | 59.66 | 100.00 |
| 300 | 精矿 | 75.78 | 66.01 | 84.24 |
| 尾矿 | 24.22 | 38.63 | 15.76 |
| 给矿 | 100.00 | 59.38 | 100.00 |
| 450 | 精矿 | 77.74 | 65.46 | 85.60 |
| 尾矿 | 22.26 | 38.45 | 14.40 |
| 给矿 | 100.00 | 59.45 | 100.00 |
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| RA用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 75 | 精矿 | 79.72 | 64.82 | 86.96 |
| 尾矿 | 20.28 | 38.22 | 13.04 |
| 给矿 | 100.00 | 59.43 | 100.00 |
| 100 | 精矿 | 74.52 | 66.82 | 83.45 |
| 尾矿 | 25.48 | 38.74 | 16.55 |
| 给矿 | 100.00 | 59.66 | 100.00 |
| 125 | 精矿 | 71.54 | 66.92 | 80.16 |
| 尾矿 | 28.46 | 41.63 | 19.84 |
| 给矿 | 100.00 | 59.72 | 100.00 |
| 150 | 精矿 | 69.93 | 66.96 | 78.30 |
| 尾矿 | 30.07 | 43.15 | 21.70 |
| 给矿 | 100.00 | 59.80 | 100.00 |
), ArticleFig(id=1241406738134528191, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=CN, label=表8, caption=
RA用量试验结果
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| RA用量/(g·t-1) | 产品名称 | 作业产率/% | TFe品位/% | 作业回收率/% |
|---|
| 75 | 精矿 | 79.72 | 64.82 | 86.96 |
| 尾矿 | 20.28 | 38.22 | 13.04 |
| 给矿 | 100.00 | 59.43 | 100.00 |
| 100 | 精矿 | 74.52 | 66.82 | 83.45 |
| 尾矿 | 25.48 | 38.74 | 16.55 |
| 给矿 | 100.00 | 59.66 | 100.00 |
| 125 | 精矿 | 71.54 | 66.92 | 80.16 |
| 尾矿 | 28.46 | 41.63 | 19.84 |
| 给矿 | 100.00 | 59.72 | 100.00 |
| 150 | 精矿 | 69.93 | 66.96 | 78.30 |
| 尾矿 | 30.07 | 43.15 | 21.70 |
| 给矿 | 100.00 | 59.80 | 100.00 |
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| 产品名称 | 产率/% | TFe品位/% | 回收率/% |
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| 精矿 | 84.52 | 65.66 | 92.95 |
| 尾矿 | 15.48 | 27.21 | 7.05 |
| 给矿 | 100.00 | 59.71 | 100.00 |
), ArticleFig(id=1241406738415546568, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241406726830879372, language=CN, label=表9, caption=
反浮选闭路试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 产品名称 | 产率/% | TFe品位/% | 回收率/% |
|---|
| 精矿 | 84.52 | 65.66 | 92.95 |
| 尾矿 | 15.48 | 27.21 | 7.05 |
| 给矿 | 100.00 | 59.71 | 100.00 |
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