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Article(id=1241321696641208330, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1241321691524158287, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2025.02.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1729008000000, receivedDateStr=2024-10-16, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773883755120, onlineDateStr=2026-03-19, pubDate=1743436800000, pubDateStr=2025-04-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773883755120, onlineIssueDateStr=2026-03-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773883755120, creator=13701087609, updateTime=1773883755120, 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=60, endPage=63, ext={EN=ArticleExt(id=1241321697404571717, articleId=1241321696641208330, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Beneficiation Technology for Reclaiming Fluorite from Tailings of Polymetallic Ore Concentrator in Hunan Province, columnId=1236276106932842717, journalTitle=Mining and Metallurgical Engineering, columnName=MINERAL PROCESSING, runingTitle=null, highlight=null, articleAbstract=

In a Hunan polymetallic ore concentrator, the tailings with CaF2 grade of 26.56% exhibit certain economic value. However, due to the influence of residue reagents in the upstream processing of main tungsten-molybdenum-bismuth minerals and the interference of calcium-bearing gangue, it is extremely difficult to recover fluorite from the tailings. A process consisting of selective regrinding, tailings discarding by high intensity magnetic separation, and fluorite flotation was adopted with a new reagent NH-1 as activator of fluorite, CY-63 as collector of fluorite, SWG+SZY as depressant of silicate and micro-fine gangue, and CYAB as depressant of calcareous gangue. As a result, fluorite concentrate with CaF2 grade of 90.50%, CaCO3 content of only 1.35% and CaF2 recovery of 79.50% was finally reclaimed in the closed-circuit test. It is concluded that such tailings resources can be comprehensively utilized by adopting this process.

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湖南某多金属选矿厂尾矿CaF2品位26.56%，具有一定经济价值，但受前端主矿物钨钼铋综合回收过程中残余药剂的影响以及含钙脉石的干扰，萤石综合回收难度极大。以自主研发的新型药剂NH-1为萤石活化剂、CY-63为萤石捕收剂、SWG+SZY为硅酸盐与微细粒脉石抑制剂、CYAB为含钙脉石抑制剂，采用选择性再磨-强磁选抛废-萤石浮选工艺，闭路试验获得了CaF2品位90.50%、CaCO3品位1.35%、CaF2回收率79.50%的萤石精矿，实现了尾矿资源高效综合利用。

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唐雪峰（1976—），男，湖南东安人，正高级工程师，长期从事复杂难选多金属矿选矿技术研究及药剂开发。E-mail：
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赵洪冬（1985—），男，湖南长沙人，工程师，长期从事有色金属选矿及尾矿资源二次综合利用。E-mail：

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赵洪冬（1985—），男，湖南长沙人，工程师，长期从事有色金属选矿及尾矿资源二次综合利用。E-mail：

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赵洪冬（1985—），男，湖南长沙人，工程师，长期从事有色金属选矿及尾矿资源二次综合利用。E-mail：

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Mining and Metallurgical Engineering, 2022, 42(1): 68-71., articleTitle=Recovering associated fluorite from tailings of tungsten-containing polymetallic ore, refAbstract=null)], funds=[Fund(id=1241327682382787200, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, awardId=2022YFC2904801, language=CN, fundingSource=国家重点研发计划(2022YFC2904801), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241327671544706025, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, xref=null, ext=[AuthorCompanyExt(id=1241327671548900330, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, companyId=1241327671544706025, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Changsha Research Institute of Mining and Metallurgy Co, Ltd, Changsha 410012, Hunan, China), AuthorCompanyExt(id=1241327671557288939, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, companyId=1241327671544706025, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=长沙矿冶研究院有限责任公司，湖南　长沙　410012)])], figs=[ArticleFig(id=1241327678146539852, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Fig.1, caption=Basic flowsheet of test, figureFileSmall=2nVD5Uk/SuiCOd6C8YxQuQ==, figureFileBig=44P9GwgyCHzScJTnFSiQIg==, tableContent=null), ArticleFig(id=1241327678289146205, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=图1, caption=试验原则流程, figureFileSmall=2nVD5Uk/SuiCOd6C8YxQuQ==, figureFileBig=44P9GwgyCHzScJTnFSiQIg==, tableContent=null), ArticleFig(id=1241327678507250026, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Fig.2, caption=Effect of NH-1 dosage on roughing indices, figureFileSmall=JOnoY1PwRqnQvnVggN9vLQ==, figureFileBig=3YFb4IJehWhtaKf6QtAzqw==, tableContent=null), ArticleFig(id=1241327678612107633, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=图2, caption=萤石活化剂NH-1用量对粗选指标的影响, figureFileSmall=JOnoY1PwRqnQvnVggN9vLQ==, figureFileBig=3YFb4IJehWhtaKf6QtAzqw==, tableContent=null), ArticleFig(id=1241327678784074118, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Fig.3, caption=Effect of collector types on roughing indices, figureFileSmall=2Ekwe/+hC6Vc7Mid1goXPw==, figureFileBig=S/QKvg4AM/5quEVdxhHDRg==, tableContent=null), ArticleFig(id=1241327678872154512, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=图3, caption=捕收剂种类对粗选指标的影响, figureFileSmall=2Ekwe/+hC6Vc7Mid1goXPw==, figureFileBig=S/QKvg4AM/5quEVdxhHDRg==, tableContent=null), ArticleFig(id=1241327679006372253, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Fig.4, caption=Flowchart for condition test of depressant types, figureFileSmall=y9tmhNAZsgq7HY4Z4r9EOg==, figureFileBig=PEhicwbUE+02x02KrUxCFQ==, tableContent=null), ArticleFig(id=1241327679119618471, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=图4, caption=精选抑制剂种类条件试验流程, figureFileSmall=y9tmhNAZsgq7HY4Z4r9EOg==, figureFileBig=PEhicwbUE+02x02KrUxCFQ==, tableContent=null), ArticleFig(id=1241327679203504564, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Fig.5, caption=Effect of depressant types on cleaning indices, figureFileSmall=SaryHj/e+fJVZp96eTssug==, figureFileBig=7PfVJ/vk938vcqX8g3N/Mw==, tableContent=null), ArticleFig(id=1241327679304167876, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=图5, caption=精选抑制剂种类对精选指标的影响, figureFileSmall=SaryHj/e+fJVZp96eTssug==, figureFileBig=7PfVJ/vk938vcqX8g3N/Mw==, tableContent=null), ArticleFig(id=1241327679429997007, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Fig.6, caption=Closed-circuit test flowchart, figureFileSmall=IzQk//tDBh6GNd8kagoR7Q==, figureFileBig=MDL/CNMXWK3ZZ1VHB0Tu0w==, tableContent=null), ArticleFig(id=1241327679518077402, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=图6, caption=闭路试验流程, figureFileSmall=IzQk//tDBh6GNd8kagoR7Q==, figureFileBig=MDL/CNMXWK3ZZ1VHB0Tu0w==, tableContent=null), ArticleFig(id=1241327679631323621, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Table 1, caption=

Chemical multielement analysis results of ore sample

, figureFileSmall=null, figureFileBig=null, tableContent=
CaF2WO3BiMoSnPbZn
26.560.100.020.0080.020.0450.015
BeFeMnOSiO2CaCO3Al2O3MgO
0.0125.040.7829.1817.0811.531.24
TiO2RbK2ONa2OPS烧失
0.120.101.720.940.010.088.82
), ArticleFig(id=1241327679744569838, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=表1, caption=

矿样化学多元素分析结果（质量分数）

, figureFileSmall=null, figureFileBig=null, tableContent=
CaF2WO3BiMoSnPbZn
26.560.100.020.0080.020.0450.015
BeFeMnOSiO2CaCO3Al2O3MgO
0.0125.040.7829.1817.0811.531.24
TiO2RbK2ONa2OPS烧失
0.120.101.720.940.010.088.82
), ArticleFig(id=1241327679845233147, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Table 2, caption=

Main minerals and contents in ore sample

, figureFileSmall=null, figureFileBig=null, tableContent=
萤石方解石石英长石云母石榴石绿泥石角闪石其他
24.717.112.44.513.612.75.44.65.0
), ArticleFig(id=1241327679971062282, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=表2, caption=

矿样主要矿物种类及含量（质量分数）

, figureFileSmall=null, figureFileBig=null, tableContent=
萤石方解石石英长石云母石榴石绿泥石角闪石其他
24.717.112.44.513.612.75.44.65.0
), ArticleFig(id=1241327680084308508, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Table 3, caption=

Test conditions for preconcentration

, figureFileSmall=null, figureFileBig=null, tableContent=
工艺流程作业条件
强磁选尾矿直接采用ZH-560型强磁机，在磁场强度1.8 T、尾矿冲洗水流量300 L/h条件下进行一次强磁选
选择性再磨-强磁选尾矿经预先分级，+0.045 mm粒级经再磨后与-0.045 mm粒级合并，在给矿细度-0.038 mm粒级占82.11%条件下采用ZH-560型强磁机，在磁场强度1.8 T、尾矿冲洗水流量300 L/h条件下进行一次强磁选
), ArticleFig(id=1241327680176583209, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=表3, caption=

预选抛废工艺试验条件

, figureFileSmall=null, figureFileBig=null, tableContent=
工艺流程作业条件
强磁选尾矿直接采用ZH-560型强磁机，在磁场强度1.8 T、尾矿冲洗水流量300 L/h条件下进行一次强磁选
选择性再磨-强磁选尾矿经预先分级，+0.045 mm粒级经再磨后与-0.045 mm粒级合并，在给矿细度-0.038 mm粒级占82.11%条件下采用ZH-560型强磁机，在磁场强度1.8 T、尾矿冲洗水流量300 L/h条件下进行一次强磁选
), ArticleFig(id=1241327680277246515, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Table 4, caption=

Test results of preconcentration

, figureFileSmall=null, figureFileBig=null, tableContent=
工艺流程产品名称产率/%品位/%回收率/%
CaF2CaCO3CaF2CaCO3
强磁选预选精矿75.7729.5122.1284.6996.73
预选尾矿24.2316.692.3415.313.27
给矿100.0026.4017.33100.00100.00
选择性再磨-强磁选预选精矿81.1629.4521.3490.2798.56
预选尾矿18.8413.681.349.731.44
给矿100.0026.4817.57100.00100.00
), ArticleFig(id=1241327680369521208, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=表4, caption=

预选抛废工艺试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
工艺流程产品名称产率/%品位/%回收率/%
CaF2CaCO3CaF2CaCO3
强磁选预选精矿75.7729.5122.1284.6996.73
预选尾矿24.2316.692.3415.313.27
给矿100.0026.4017.33100.00100.00
选择性再磨-强磁选预选精矿81.1629.4521.3490.2798.56
预选尾矿18.8413.681.349.731.44
给矿100.0026.4817.57100.00100.00
), ArticleFig(id=1241327680474378821, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Table 5, caption=

Closed-circuit test conditions

, figureFileSmall=null, figureFileBig=null, tableContent=
作业名称试验条件
预选抛废磁场强度1.8 T
萤石粗选NH-1 810 g/t，Na2CO3 405 g/t，CY-63 485 g/t
精选1SWG 162 g/t，SZY 162 g/t
精选2SWG 121 g/t，SZY 121 g/t
精选3SWG 81 g/t，SZY 81 g/t
精选4盐酸810 g/t，CYAB 81 g/t
精选5盐酸405 g/t，CYAB 81 g/t
精选6～9SWG 81 g/t，SZY 81 g/t
), ArticleFig(id=1241327681921413715, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=表5, caption=

闭路试验条件

, figureFileSmall=null, figureFileBig=null, tableContent=
作业名称试验条件
预选抛废磁场强度1.8 T
萤石粗选NH-1 810 g/t，Na2CO3 405 g/t，CY-63 485 g/t
精选1SWG 162 g/t，SZY 162 g/t
精选2SWG 121 g/t，SZY 121 g/t
精选3SWG 81 g/t，SZY 81 g/t
精选4盐酸810 g/t，CYAB 81 g/t
精选5盐酸405 g/t，CYAB 81 g/t
精选6～9SWG 81 g/t，SZY 81 g/t
), ArticleFig(id=1241327682026271323, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=EN, label=Table 6, caption=

Closed-circuit test results

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%品位/%回收率/%
CaF2CaCO3CaF2CaCO3
萤石精矿23.3290.501.3579.501.78
综合尾矿76.687.1022.6920.5098.22
给矿100.0026.5617.08100.00100.00
), ArticleFig(id=1241327682131128934, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241321696641208330, language=CN, label=表6, caption=

闭路试验结果

, figureFileSmall=null, figureFileBig=null, tableContent=
产品名称产率/%品位/%回收率/%
CaF2CaCO3CaF2CaCO3
萤石精矿23.3290.501.3579.501.78
综合尾矿76.687.1022.6920.5098.22
给矿100.0026.5617.08100.00100.00
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湖南某多金属选矿厂尾矿中萤石综合回收选矿技术研究
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赵洪冬 , 唐雪峰 , 刘旭 , 朱煜腾
矿冶工程杂志 | 选矿 2025,45(2): 60-63
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矿冶工程杂志 | 选矿 2025, 45(2): 60-63
湖南某多金属选矿厂尾矿中萤石综合回收选矿技术研究
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赵洪冬 , 唐雪峰 , 刘旭, 朱煜腾
作者信息
  • 长沙矿冶研究院有限责任公司，湖南　长沙　410012

    • 赵洪冬（1985—），男，湖南长沙人，工程师，长期从事有色金属选矿及尾矿资源二次综合利用。E-mail：

通讯作者:

唐雪峰（1976—），男，湖南东安人，正高级工程师，长期从事复杂难选多金属矿选矿技术研究及药剂开发。E-mail：
Beneficiation Technology for Reclaiming Fluorite from Tailings of Polymetallic Ore Concentrator in Hunan Province
Hongdong ZHAO , Xuefeng TANG , Xu LIU, Yuteng ZHU
Affiliations
  • 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.0253-6099.2025.02.010
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摘要
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湖南某多金属选矿厂尾矿CaF2品位26.56%，具有一定经济价值，但受前端主矿物钨钼铋综合回收过程中残余药剂的影响以及含钙脉石的干扰，萤石综合回收难度极大。以自主研发的新型药剂NH-1为萤石活化剂、CY-63为萤石捕收剂、SWG+SZY为硅酸盐与微细粒脉石抑制剂、CYAB为含钙脉石抑制剂，采用选择性再磨-强磁选抛废-萤石浮选工艺，闭路试验获得了CaF2品位90.50%、CaCO3品位1.35%、CaF2回收率79.50%的萤石精矿，实现了尾矿资源高效综合利用。

尾矿综合利用  /  萤石  /  浮选  /  活化剂  /  捕收剂  /  抑制剂  /  含钙脉石

In a Hunan polymetallic ore concentrator, the tailings with CaF2 grade of 26.56% exhibit certain economic value. However, due to the influence of residue reagents in the upstream processing of main tungsten-molybdenum-bismuth minerals and the interference of calcium-bearing gangue, it is extremely difficult to recover fluorite from the tailings. A process consisting of selective regrinding, tailings discarding by high intensity magnetic separation, and fluorite flotation was adopted with a new reagent NH-1 as activator of fluorite, CY-63 as collector of fluorite, SWG+SZY as depressant of silicate and micro-fine gangue, and CYAB as depressant of calcareous gangue. As a result, fluorite concentrate with CaF2 grade of 90.50%, CaCO3 content of only 1.35% and CaF2 recovery of 79.50% was finally reclaimed in the closed-circuit test. It is concluded that such tailings resources can be comprehensively utilized by adopting this process.

comprehensive utilization of tailings  /  fluorite  /  flotation  /  activator  /  collector  /  depressant  /  calcium-bearing gangue
赵洪冬, 唐雪峰, 刘旭, 朱煜腾. 湖南某多金属选矿厂尾矿中萤石综合回收选矿技术研究. 矿冶工程杂志, 2025 , 45 (2) : 60 -63 . DOI: 10.3969/j.issn.0253-6099.2025.02.010
Hongdong ZHAO, Xuefeng TANG, Xu LIU, Yuteng ZHU. Beneficiation Technology for Reclaiming Fluorite from Tailings of Polymetallic Ore Concentrator in Hunan Province[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 60 -63 . DOI: 10.3969/j.issn.0253-6099.2025.02.010
正文
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萤石作为战略性非金属矿产资源，在化工、冶金以及新能源、新材料等领域具有不可替代的战略地位[1-3]。我国伴生型萤石资源储量大，但萤石品位低，尤其是碳酸盐型伴生萤石矿，主要脉石矿物方解石与萤石具有相似的表面活性位点，在磨浮过程中表面离子的溶解与再吸附导致二者相互转化，表面性质趋于同化[4]，浮选分离极为困难。
湖南某钨钼铋多金属选矿厂外排浮选尾矿CaF2品位26.56%，但受上游钨、钼、铋浮选作业残留药剂影响，尤其是钨浮选中添加了大量盐化水玻璃，硅酸胶粒Si（OH）4和SiO（OH）3-吸附在萤石表面，使得萤石可浮性显著降低[5-8]，加之尾矿中方解石含量较高，分选难度大，浮选尾矿一直外排，造成巨大的资源浪费。本文针对该浮选尾矿进行选矿技术研究，旨在突破常规技术限制，实现萤石高效综合回收。研究成果可为国内外同类型尾矿资源的综合利用提供技术支持和借鉴。
1　矿样性质
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试验矿样取自湖南某钨钼铋多金属选矿厂的外排尾矿，其化学多元素分析结果见表1，主要矿物种类及含量见表2。该矿样可供选矿回收的主要元素仅CaF2；脉石矿物主要为方解石、石英、长石、云母、石榴石、绿泥石和角闪石等，其中方解石、石榴石、角闪石及绿泥石表面均存在与萤石表面相似的价键不饱和Ca2+、Mg2+，是萤石浮选的主要干扰因素。
样品中萤石粒度不均匀，个别粗者可至0.15 mm，一般小于0.1 mm，呈单体产出者占65%左右，其余部分主要与石英、云母、石榴石紧密镶嵌，相互之间常表现出毗连型连生体的特征。样品中石榴石为等轴粒状，粒度常变化于0.03～0.15 mm之间，个别粗者可达0.2 mm，呈单体产出者约占70%，其余部分主要与石英、绢云母、萤石、方解石和角闪石镶嵌，但以毗连型连生体居多。
2　试验结果与讨论
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2.1　试验原则流程
针对该尾矿矿样性质，拟通过预选抛废技术脱除石榴石、绿泥石等易浮难分选弱磁性矿物以提高入浮CaF2品位并改善萤石浮选环境，然后对预选粗精矿进行萤石活化处理，再由易到难依次脱除硅酸盐类脉石、碳酸盐类脉石及微细粒脉石，最终获得合格萤石精矿产品。试验原则流程如图1所示。
2.2　预选抛废工艺对比试验
为提高萤石回收率，进行了预选抛废工艺对比试验，试验条件见表3，结果见表4。由表4可知，采用选择性再磨-强磁选抛废工艺，能够降低因毗连损失在预选尾矿中的萤石矿物，预选尾矿中CaF2品位由16.69%降至13.68%，在预选精矿CaF2品位相近的情况下，CaF2回收率可提高5.58百分点。
2.3　萤石浮选试验
2.3.1　粗选活化剂条件试验
以选择性再磨-强磁选抛废工艺所得预选精矿为给矿进行萤石浮选试验研究。在调整剂碳酸钠用量500 g/t、捕收剂CY-63用量1 000 g/t条件下，进行了粗选活化剂NH-1用量条件试验，结果见图2。其中捕收剂CY-63和离子型萤石活化剂NH-1均为自主研发的药剂。由图2可知，粗精矿CaF2回收率随着NH-1用量增加逐渐增加，CaF2品位则呈下降趋势。综合考虑，活化剂NH-1用量1 000 g/t为宜。
2.3.2　粗选捕收剂条件试验
在调整剂碳酸钠用量500 g/t、活化剂NH-1用量1 000 g/t条件下，进行了捕收剂种类条件试验，捕收剂CYP-01、CY-50、CY-63均为自主研发的脂肪酸类阴离子捕收剂，用量均为1 000 g/t，结果如图3所示。由图3可知：捕收剂CY-63选择性显著优于油酸钠，在粗精矿CaF2回收率相当的情况下，CaF2品位高出6.21百分点；CY-63捕收能力强于CY-50和CYP-01，在粗精矿CaF2品位相当的情况下，CaF2回收率均提高了约4百分点。CY-63通过对脂肪酸中羧基、双键及α-H进行改性获得，该药剂溶解性好，分散性强，能达到强化捕收萤石矿物的效果。
2.3.3　精选抑制剂条件试验
进行了精选抑制剂种类遴选试验，抑制剂用量均为100 g/t，试验流程见图4，试验结果见图5。其中SWG为特殊改性水玻璃，CYZ-1为改性栲胶，CYAB是自主研发的小分子有机酸。由图5可知，几种抑制剂对方解石抑制能力强弱依次为：CYZ-1>单宁酸>CYAB>SWG。CYZ-1对方解石抑制能力虽强，但选择性差，对萤石也产生了抑制作用。CYAB对方解石具有选择性抑制效果，能将方解石集中抑制在中矿中，且对萤石无抑制作用，对应的CaF2回收率较CYZ-1高15.59百分点。
2.4　全流程闭路试验
在条件试验及开路试验基础上，适当调整药剂制度后进行了全流程闭路试验，试验条件见表5，试验结果见表6，试验流程见图6。采用选择性再磨-强磁选抛废-萤石浮选工艺，可获得CaF2品位90.50%、CaF2回收率79.50%的萤石精矿，有效回收了尾矿中的萤石资源。
3　结论
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1）湖南某钨钼铋多金属选矿厂外排浮选尾矿CaF2品位26.56%、CaCO3品位17.08%，具有较高二次回收价值，受选矿技术制约，未能实现综合回收。
2）自主研发的新型萤石活化剂NH-1能有效脱除覆盖在萤石矿物表面的残留药剂，大幅提高粗选CaF2回收率。采用选择性再磨-强磁选抛废-萤石浮选工艺，以NH-1为萤石活化剂、CY-63为萤石捕收剂、SWG+SZY为硅酸盐与微细粒脉石抑制剂、CYAB为含钙脉石抑制剂，闭路试验可获得CaF2品位90.50%、CaCO3品位仅1.35%、CaF2回收率79.50%的萤石精矿，实现了尾矿资源高效综合利用。研究成果可为国内外同类型尾矿资源的综合利用提供技术支持和借鉴。
基金
收起
  • 国家重点研发计划(2022YFC2904801)
文献
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参考文献 引证文献
排序方式：
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李育彪, 杨旭. 我国萤石资源及选矿技术进展[J]. 矿产保护与利用, 2022(2): 50-58.
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2025年第45卷第2期
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doi: 10.3969/j.issn.0253-6099.2025.02.010
  • 接收时间：2024-10-16
  • 首发时间：2026-03-19
  • 出版时间：2025-04-01
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  • 收稿日期：2024-10-16
基金
国家重点研发计划(2022YFC2904801)
作者信息
    长沙矿冶研究院有限责任公司，湖南　长沙　410012

通讯作者:

唐雪峰（1976—），男，湖南东安人，正高级工程师，长期从事复杂难选多金属矿选矿技术研究及药剂开发。E-mail：
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2种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
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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