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Article(id=1241321701842154422, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1241321691524158287, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2025.02.017, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1728576000000, receivedDateStr=2024-10-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773883756361, onlineDateStr=2026-03-19, pubDate=1743436800000, pubDateStr=2025-04-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773883756361, onlineIssueDateStr=2026-03-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773883756361, creator=13701087609, updateTime=1773883756361, updator=13701087609, issue=Issue{id=1241321691524158287, tenantId=1146029695717560320, journalId=1235980550691926019, year='2025', volume='45', issue='2', pageStart='1', pageEnd='204', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773883753901, creator=13701087609, updateTime=1773884632018, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241325374676726363, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1241321691524158287, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241325374676726364, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1241321691524158287, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=97, endPage=101, ext={EN=ArticleExt(id=1241321702165115870, articleId=1241321701842154422, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Comparative Analysis of Efficient Recovery Processes of Low-Concentration Fine-Grained Ilmenite, columnId=1236276106932842717, journalTitle=Mining and Metallurgical Engineering, columnName=MINERAL PROCESSING, runingTitle=null, highlight=null, articleAbstract=

Although the annual production of low-concentration microfine-grained ilmenite in Pan-Xi region attains over 1 million tons, it is not conducive to adopt flotation process for the subsequent titanium selection due to the microfine particle size, large volume and low concentration of this ore. For this resource, comparative experiments were conducted based on two major flowsheets, including “SLon high-intensity magnetic separation + flotation” and “desliming using new type of cyclone+flotation”. The results show that the latter process flowsheet has a lower consumption of reagents, and the obtained titanium concentrate has better indicators, with a titanium concentrate grading 47.06% TiO2 at 59.03% recovery with the yield of 20.22%.

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攀西地区每年产生的低浓度微细粒级钛铁矿大约在100万吨以上，由于该矿石粒度微细、体积量大、浓度低，不利于后续浮选工艺选钛。针对该资源开展“SLon强磁选+浮选”和“新型旋流器浓缩脱泥+浮选”两大流程对比试验，最终得出“新型旋流器浓缩脱泥+浮选”流程药剂消耗量更低，所获得的钛精矿指标更优（钛精矿产率20.22%、TiO2品位47.06%、TiO2回收率59.03%）。

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王洪彬（1979—），男，四川仁寿人，正高级工程师，主要从事钒钛磁铁矿选矿设计及研究。E-mail：
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吴雪红（1976—），女，湖南新化人，高级工程师，长期从事选矿工艺研究工作。E-mail：

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吴雪红（1976—），女，湖南新化人，高级工程师，长期从事选矿工艺研究工作。E-mail：

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吴雪红（1976—），女，湖南新化人，高级工程师，长期从事选矿工艺研究工作。E-mail：

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Mining and Metallurgical Engineering, 2020, 40(1): 65-68., articleTitle=Experimental study on recovery of ilmenite from tailings, refAbstract=null)], funds=[Fund(id=1241327689211114476, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, awardId=2023YFC2908303, language=CN, fundingSource=国家重点研发计划(2023YFC2908303), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241327675202138270, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, xref=1., ext=[AuthorCompanyExt(id=1241327675227304096, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, companyId=1241327675202138270, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1.Mining Company's Designing Research Institute, Pangang Group Co., Ltd., Panzhihua 617063, Sichuan, China), AuthorCompanyExt(id=1241327675239887011, 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caption=两种流程浮选主要药剂用量对比, figureFileSmall=+IQXjfMiLjKzo7i6zrGCTQ==, figureFileBig=jQHL3WnTkKYAWVADSoR2+A==, tableContent=null), ArticleFig(id=1241327684643517206, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 1, caption=

Chemical multi-element analysis of sample

, figureFileSmall=null, figureFileBig=null, tableContent=
TiO2TFeFe2O3FeOSiO2MgOAl2O3CaO
16.1218.903.0721.5528.029.828.018.10
Na2OMnOK2OCoCuSPC
0.6020.3530.0980.0120.0130.5050.0100.024
), ArticleFig(id=1241327684756763421, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表1, caption=

试样化学多元素分析结果（质量分数）

, figureFileSmall=null, figureFileBig=null, tableContent=
TiO2TFeFe2O3FeOSiO2MgOAl2O3CaO
16.1218.903.0721.5528.029.828.018.10
Na2OMnOK2OCoCuSPC
0.6020.3530.0980.0120.0130.5050.0100.024
), ArticleFig(id=1241327684865815336, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 2, caption=

Phase analysis results of titanium in sample

, figureFileSmall=null, figureFileBig=null, tableContent=
钛物相含量（质量分数）/%分布率/%
钛铁矿中TiO215.0892.15
钛磁铁矿中TiO20.191.01
榍石及其他TiO21.296.84
合计16.56100.00
), ArticleFig(id=1241327685000033072, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表2, caption=

试样中钛化学物相分析结果

, figureFileSmall=null, figureFileBig=null, tableContent=
钛物相含量（质量分数）/%分布率/%
钛铁矿中TiO215.0892.15
钛磁铁矿中TiO20.191.01
榍石及其他TiO21.296.84
合计16.56100.00
), ArticleFig(id=1241327686497399609, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 3, caption=

Main mineral composition and contents of sample

, figureFileSmall=null, figureFileBig=null, tableContent=
钛铁矿钛磁铁矿钙钛矿榍石磁黄铁矿、黄铁矿硫钴矿
33.220.580.021.151.180.04
长石辉石闪石绿泥石方解石石榴石
5.4134.083.8318.540.031.16
云母蛇纹石尖晶石磷灰石一水铝石其他
0.070.320.230.070.050.02
), ArticleFig(id=1241327686598062911, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表3, caption=

主要矿物组成及含量（质量分数）

, figureFileSmall=null, figureFileBig=null, tableContent=
钛铁矿钛磁铁矿钙钛矿榍石磁黄铁矿、黄铁矿硫钴矿
33.220.580.021.151.180.04
长石辉石闪石绿泥石方解石石榴石
5.4134.083.8318.540.031.16
云母蛇纹石尖晶石磷灰石一水铝石其他
0.070.320.230.070.050.02
), ArticleFig(id=1241327686728086344, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 4, caption=

Sieve analysis results of sample

, figureFileSmall=null, figureFileBig=null, tableContent=
粒级/mm产率/%TiO2品位/%分布率/%
+0.0740.316.730.13
-0.074+0.0386.435.012.00
-0.038+0.02034.7413.7829.72
-0.020+0.01030.1920.3238.09
-0.010+0.00516.1323.1223.15
-0.00512.209.126.91
合计100.0016.11100.00
), ArticleFig(id=1241327686853915473, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表4, caption=

试样全粒级筛析结果

, figureFileSmall=null, figureFileBig=null, tableContent=
粒级/mm产率/%TiO2品位/%分布率/%
+0.0740.316.730.13
-0.074+0.0386.435.012.00
-0.038+0.02034.7413.7829.72
-0.020+0.01030.1920.3238.09
-0.010+0.00516.1323.1223.15
-0.00512.209.126.91
合计100.0016.11100.00
), ArticleFig(id=1241327687017493339, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 5, caption=

Results of preconcentration test with high intensity magnetic separation

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
强磁选粗精矿60.6119.3573.34
强磁选扫精矿11.6316.1211.63
强磁选混合精矿72.2418.9684.97
强磁选尾矿27.768.7315.03
给矿100.0016.12100.00
), ArticleFig(id=1241327687172682601, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表5, caption=

强磁选预富集试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
强磁选粗精矿60.6119.3573.34
强磁选扫精矿11.6316.1211.63
强磁选混合精矿72.2418.9684.97
强磁选尾矿27.768.7315.03
给矿100.0016.12100.00
), ArticleFig(id=1241327687311094641, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 6, caption=

Flotation test results of high intensity magnetic separation of bulk concentrate

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称作业产率/%TiO2品位/%TiO2作业回收率/%
S精矿14.6220.1215.51
钛精矿11.3047.2128.12
中矿19.1919.819.60
中矿24.3226.576.06
中矿32.7233.764.83
浮选尾矿57.8611.7635.88
给矿100.0018.96100.00
), ArticleFig(id=1241327687512421248, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表6, caption=

强磁选混合精矿浮选试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称作业产率/%TiO2品位/%TiO2作业回收率/%
S精矿14.6220.1215.51
钛精矿11.3047.2128.12
中矿19.1919.819.60
中矿24.3226.576.06
中矿32.7233.764.83
浮选尾矿57.8611.7635.88
给矿100.0018.96100.00
), ArticleFig(id=1241327687634056076, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 7, caption=

Results of closed-circuit test with high intensity magnetic separation and flotation

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
S精矿10.5621.9514.38
钛精矿9.1747.0926.79
尾矿80.2711.8258.83
给矿100.0016.12100.00
), ArticleFig(id=1241327687743107989, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表7, caption=

强磁选-浮选闭路试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
S精矿10.5621.9514.38
钛精矿9.1747.0926.79
尾矿80.2711.8258.83
给矿100.0016.12100.00
), ArticleFig(id=1241327687856354205, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 8, caption=

Test results of desliming by concentration with cyclone

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
沉砂66.0518.6876.49
溢流33.9511.1723.51
给矿100.0016.13100.00
), ArticleFig(id=1241327687973794726, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表8, caption=

新型旋流器浓缩脱泥试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
沉砂66.0518.6876.49
溢流33.9511.1723.51
给矿100.0016.13100.00
), ArticleFig(id=1241327688057680816, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 9, caption=

Flotation test results of cyclone sand

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称作业产率/%TiO2品位/%TiO2作业回收率/%
S精矿14.0421.2715.99
钛精矿26.2147.1366.14
中矿18.167.873.44
中矿24.5521.485.24
中矿32.1424.452.80
浮选尾矿44.902.666.40
给矿100.0018.68100.00
), ArticleFig(id=1241327688162538424, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表9, caption=

新型旋流器沉砂浮选试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称作业产率/%TiO2品位/%TiO2作业回收率/%
S精矿14.0421.2715.99
钛精矿26.2147.1366.14
中矿18.167.873.44
中矿24.5521.485.24
中矿32.1424.452.80
浮选尾矿44.902.666.40
给矿100.0018.68100.00
), ArticleFig(id=1241327688284173251, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 10, caption=

Results of closed-circuit test with desliming and flotation

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
S精矿9.2721.2712.23
钛精矿20.2247.0659.03
尾矿70.516.5728.74
给矿100.0016.12100.00
), ArticleFig(id=1241327688414196682, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表10, caption=

脱泥-浮选闭路试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%TiO2品位/%TiO2回收率/%
S精矿9.2721.2712.23
钛精矿20.2247.0659.03
尾矿70.516.5728.74
给矿100.0016.12100.00
), ArticleFig(id=1241327688535831503, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 11, caption=

Indices comparison of titanium concentrate from two flowsheets

, figureFileSmall=null, figureFileBig=null, tableContent=
流程钛精矿产率/%精矿TiO2品位/%TiO2回收率/%
流程19.1747.0926.79
流程220.2247.0659.03
), ArticleFig(id=1241327688653272021, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表11, caption=

两种流程回收钛精矿指标对比

, figureFileSmall=null, figureFileBig=null, tableContent=
流程钛精矿产率/%精矿TiO2品位/%TiO2回收率/%
流程19.1747.0926.79
流程220.2247.0659.03
), ArticleFig(id=1241327688749741018, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=EN, label=Table 12, caption=

Sieve analysis results of flotation feed in two flowsheets

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称粒级/mm产率/%TiO2品位/%TiO2分布率/%
流程1
浮选给矿		+0.0389.474.932.46
-0.038+0.02043.0316.6637.80
-0.020+0.01022.8426.1531.49
-0.010+0.00515.9028.3623.78
-0.0058.769.674.47
合计100.0018.96100.00
流程2
浮选给矿		+0.0388.474.031.82
-0.038+0.02043.7414.2533.32
-0.020+0.01034.1323.8143.44
-0.010+0.00512.9030.3120.90
-0.0050.7612.750.52
合计100.0018.71100.00
), ArticleFig(id=1241327688875570143, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321701842154422, language=CN, label=表12, caption=

两种流程浮选给矿筛析结果对比

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称粒级/mm产率/%TiO2品位/%TiO2分布率/%
流程1
浮选给矿		+0.0389.474.932.46
-0.038+0.02043.0316.6637.80
-0.020+0.01022.8426.1531.49
-0.010+0.00515.9028.3623.78
-0.0058.769.674.47
合计100.0018.96100.00
流程2
浮选给矿		+0.0388.474.031.82
-0.038+0.02043.7414.2533.32
-0.020+0.01034.1323.8143.44
-0.010+0.00512.9030.3120.90
-0.0050.7612.750.52
合计100.0018.71100.00
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低浓度微细粒级钛铁矿高效回收工艺对比探析
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吴雪红 1 , 王洪彬 2 , 安登极 3 , 张愚 1 , 王建平 1
矿冶工程杂志 | 选矿 2025,45(2): 97-101
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矿冶工程杂志 | 选矿 2025, 45(2): 97-101
低浓度微细粒级钛铁矿高效回收工艺对比探析
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吴雪红1 , 王洪彬2 , 安登极3, 张愚1, 王建平1
作者信息
  • 1.攀钢集团矿业有限公司设计研究院，四川　攀枝花　617063
  • 2.攀钢集团有限公司，四川　攀枝花　617000
  • 3.长沙矿冶研究院有限责任公司，湖南　长沙　410012

    • 吴雪红（1976—），女，湖南新化人，高级工程师，长期从事选矿工艺研究工作。E-mail：

通讯作者:

王洪彬（1979—），男，四川仁寿人，正高级工程师，主要从事钒钛磁铁矿选矿设计及研究。E-mail：
Comparative Analysis of Efficient Recovery Processes of Low-Concentration Fine-Grained Ilmenite
Xuehong WU1 , Hongbin WANG2 , Dengji AN3, Yu ZHANG1, Jianping WANG1
Affiliations
  • 1.Mining Company's Designing Research Institute, Pangang Group Co., Ltd., Panzhihua 617063, Sichuan, China
  • 2.Pangang Group Co., Ltd., Panzhihua 617000, Sichuan, China
  • 3.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
出版时间: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.017
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摘要
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攀西地区每年产生的低浓度微细粒级钛铁矿大约在100万吨以上，由于该矿石粒度微细、体积量大、浓度低，不利于后续浮选工艺选钛。针对该资源开展“SLon强磁选+浮选”和“新型旋流器浓缩脱泥+浮选”两大流程对比试验，最终得出“新型旋流器浓缩脱泥+浮选”流程药剂消耗量更低，所获得的钛精矿指标更优（钛精矿产率20.22%、TiO2品位47.06%、TiO2回收率59.03%）。

浮选  /  微细粒  /  钛铁矿  /  旋流器  /  钛精矿  /  脱泥  /  工艺对比  /  工业回收

Although the annual production of low-concentration microfine-grained ilmenite in Pan-Xi region attains over 1 million tons, it is not conducive to adopt flotation process for the subsequent titanium selection due to the microfine particle size, large volume and low concentration of this ore. For this resource, comparative experiments were conducted based on two major flowsheets, including “SLon high-intensity magnetic separation + flotation” and “desliming using new type of cyclone+flotation”. The results show that the latter process flowsheet has a lower consumption of reagents, and the obtained titanium concentrate has better indicators, with a titanium concentrate grading 47.06% TiO2 at 59.03% recovery with the yield of 20.22%.

flotation  /  microfine grained  /  ilmenite  /  cyclone  /  titanium concentrate  /  desliming  /  process comparison  /  commercial recovery
吴雪红, 王洪彬, 安登极, 张愚, 王建平. 低浓度微细粒级钛铁矿高效回收工艺对比探析. 矿冶工程杂志, 2025 , 45 (2) : 97 -101 . DOI: 10.3969/j.issn.0253-6099.2025.02.017
Xuehong WU, Hongbin WANG, Dengji AN, Yu ZHANG, Jianping WANG. Comparative Analysis of Efficient Recovery Processes of Low-Concentration Fine-Grained Ilmenite[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 97 -101 . DOI: 10.3969/j.issn.0253-6099.2025.02.017
正文
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攀西地区是中国最大的钛资源基地，钛资源量占全国钛储量的90%。该地区钛资源主要赋存在钒钛磁铁矿中，其中含有8%～10%的二氧化钛[1-5]。该类资源开发一般采用先选铁后选钛工艺[6-7]。钛铁矿性脆，经过选铁、选钛多段磨选后，极易过粉碎。过粉碎的钛铁矿严重影响后续浮选作业，为了确保钛精矿质量、降低药剂耗量，当前常采用斜板浓密机将其脱除并作为矿泥丢弃。攀西地区每年通过斜板浓密机脱除的矿泥量（溢流）超过100万吨，造成钛资源的极大浪费。
斜板浓密机溢流中微细粒级钛铁矿具有粒度微细、体积量大、浓度低等回收难点，长期制约该资源的工业回收。本文针对回收难点，开展2种工艺对比试验，其中采用新型旋流器浓缩脱泥+浮选流程获得了钛精矿TiO2品位大于47%、TiO2回收率59%以上的微细粒级钛铁矿。
1　试样性质
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试样为攀西某选矿厂的斜板浓密机溢流，浓度（质量分数）5%左右。试样化学多元素和钛物相分析结果分别见表1和表2，主要矿物组成及含量见表3，全粒级筛析结果见表4。
从表1～3可知，试样中有用矿物主要为钛铁矿，其次还有少量钛磁铁矿和金属硫化物。钛主要赋存在钛铁矿中，其次赋存于榍石中。脉石矿物主要为辉石和绿泥石，次为长石和闪石。
由表4可知，试样粒度微细，-0.038 mm粒级产率达到了93.26%。TiO2品位随着粒度变细而整体呈增加趋势，但-0.005 mm粒级反而出现了明显贫化，TiO2品位降低。由于目前采用常规选矿方法难以高效回收-0.010 mm粒级钛矿物，且它的存在严重影响选钛指标，有必要预先将其抛除。
2　试验方案
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根据斜板浓密机溢流中微细粒级钛铁矿矿石性质，考虑常规强磁选设备具有脱泥和富集钛铁矿效果，而新型旋流器适合于极低浓度、极大体积量微细粒级钛铁矿的浓缩和脱泥[8]，拟开展两大流程对比试验，探寻高效回收该钛铁矿资源适宜的工业应用工艺流程。流程1（见图1）：先采用SLon强磁选对斜板浓密机溢流进行预富集、再对预富集的强磁选精矿进行浮选得到钛精矿；流程2（见图2）：先采用CZ100新型旋流器对斜板浓密机溢流进行浓缩脱泥，再对旋流器沉砂进行浮选得到钛精矿。
3　试验结果与分析
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3.1　流程1（SLon强磁选+浮选）试验
3.1.1　SLon强磁选试验
采用SLon强磁选机[9-11]对斜板浓密机溢流进行了一次粗选、一次扫选预富集试验（粗选和扫选磁场强度分别为800和720 kA/m），结果见表5。采用SLon强磁选机对斜板浓密机溢流进行一次粗选和一次扫选预富集，可获得产率72.24%、TiO2品位18.96%、TiO2回收率84.97%的强磁选混合精矿。
3.1.2　浮选试验
对SLon强磁选预富集所得混合精矿进行了浮选试验，试验流程见图3，试验结果见表6。SLon强磁选预富集混合精矿经脱硫-浮钛浮选作业，可获得作业产率11.30%、TiO2品位47.21%、TiO2作业回收率28.12%的钛精矿。
3.1.3　强磁选-浮选闭路试验
在条件试验和开路试验基础上，对斜板浓密机溢流进行了SLon强磁选-浮选闭路试验，试验流程见图4，结果见表7。强磁选-浮选闭路试验可获得产率9.17%、TiO2品位47.09%、TiO2回收率26.79%的钛精矿。
3.2　流程2（新型旋流器浓缩脱泥+浮选）试验
3.2.1　新型旋流器浓缩脱泥试验
采用长沙矿冶研究院有限责任公司生产的CZ100新型旋流器对斜板浓密机溢流进行浓缩脱泥试验（锥角10°，给料压力0.12～0.20 MPa，溢流管直径30～40 mm，沉砂口直径5～10 mm），结果见表8。CZ100新型旋流器采用双圆弧设计入矿口，以理想耐磨材料模压整体烧结成型。采用CZ100新型旋流器对斜板浓密机溢流进行浓缩脱泥处理，可获得产率66.05%、TiO2品位18.68%、TiO2回收率76.49%的分级沉砂。
3.2.2　浮选试验
进一步对CZ100新型旋流器沉砂进行浮选试验，试验流程见图5，结果见表9。旋流器沉砂经浮选，可获得作业产率26.21%、TiO2品位47.13%、TiO2作业回收率66.14%的钛精矿。
3.2.3　新型旋流器浓缩脱泥-浮选闭路试验
在条件试验和开路试验基础上，对斜板浓密机溢流进行了新型旋流器浓缩脱泥-浮选闭路试验，试验流程见图6，结果见表10。新型旋流器浓缩脱泥-浮选闭路试验可获得产率20.22%、TiO2品位47.06%、TiO2回收率59.03%的钛精矿。
3.3　对比分析
3.3.1　钛精矿产品对比
将以上两种流程所得钛精矿指标进行综合对比，结果见表11。从表11可知，两种流程均可获得TiO2品位大于47%的钛精矿，但流程2所获得的钛精矿产率和回收率指标更高。
3.3.2　浮选作业药剂用量对比
浮钛作业主要的药剂为调整剂硫酸和浮钛捕收剂。两种流程所用主要药剂用量对比结果见图7。从图7可知，流程2（新型旋流器浓缩脱泥-浮选）的硫酸和选钛捕收剂药耗比流程1（强磁选-浮选）的药耗低。
3.3.3　浮选给矿对比
由以上对比分析可知，流程2的浮选药耗明显低于流程1的浮选药耗，且流程2所获得的最终钛精矿指标更优，说明流程2的浮选给矿更利于浮选。为分析原因，将两种流程获得的浮选给矿进行全粒级筛析对比，结果见表12。从表12可知，流程2的浮选给矿（新型旋流器沉砂）中（-0.010+0.005）mm粒级中TiO2品位超过30%，说明新型旋流器对此粒级钛铁矿有较好的富集作用。流程2的浮选给矿中-0.005 mm粒级矿物产率不到1%，明显低于流程1的浮选给矿，说明-0.005 mm粒级矿物是制约目前浮选回收的主要原因，新型旋流器能将这部分矿泥有效脱除，降低了浮选药剂用量、提高了浮选效率。
3.3.4　综合分析结果
综上所述，在品位相近的情况下，流程2即“新型旋流器浓缩脱泥+浮选”流程指标更优，推荐该流程为斜板浓密机溢流中微细粒级钛铁矿高效回收工艺流程。
4　结论
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攀西地区某选矿厂斜板浓密机溢流中钛铁矿粒度微细，-0.038 mm粒级产率达93.26%，钛主要赋存在钛铁矿中，其次赋存于榍石中，脉石矿物主要为辉石和绿泥石，次为长石和闪石。浮选药剂用量和钛精矿产品指标综合比较结果表明，在品位相近的情况下，新型旋流器浓缩脱泥+浮选流程所获得的指标更优，可获得产率20.22%、TiO2品位47.06%、TiO2回收率59.03%的钛精矿。采用新型旋流器浓缩脱泥+浮选流程能实现低浓度微细粒级钛铁矿的高效工业回收。
基金
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  • 国家重点研发计划(2023YFC2908303)
文献
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doi: 10.3969/j.issn.0253-6099.2025.02.017
  • 接收时间：2024-10-11
  • 首发时间：2026-03-19
  • 出版时间：2025-04-01
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  • 收稿日期：2024-10-11
基金
国家重点研发计划(2023YFC2908303)
作者信息
    1.攀钢集团矿业有限公司设计研究院，四川　攀枝花　617063
    2.攀钢集团有限公司，四川　攀枝花　617000
    3.长沙矿冶研究院有限责任公司，湖南　长沙　410012

通讯作者:

王洪彬（1979—），男，四川仁寿人，正高级工程师，主要从事钒钛磁铁矿选矿设计及研究。E-mail：
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species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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