摘 要

我国的萤石矿资源藏量巨大，但却不具备较高的利用率。为了解决这个问题，本文以湖南柿竹园多金属矿尾矿为研究对象，在控制变量条件下，对萤石进行浮选条件试验，从而达到提高对萤石尾矿资源的回收率的目的。试验的研究重点在尝试不同的萤石矿捕收剂和抑制剂，选择出最高效的药剂搭配，故此，本文通过研究不同药剂对该矿物可浮性的影响结合对矿物性质的试验分析，研究了在不同抑制剂，捕收剂作用下，对萤石尾矿浮选试验的作用。主要研究结果如下：

试验结果显示：yhy、733、BK410等对萤石 都具有较好的捕收能力。在对比条件试验下，其中浮选试验对于萤石捕收效果最好和选择能力最佳的事BK410,yhy。又通过不同捕收剂多种组合试验得到其作用优于单一捕收剂，其中油酸钠 yhy起到正促进效果企且两者的比例为4：1时效果最好。萤石浮选实验中对于抑制剂的选择，NO3效果最为优良，对于抑制萤石矿中其他脉石矿物起到很好的作用，效果要优于普通抑制剂水玻璃和组合抑制剂NL,NS。最终浮选试验使用油酸钠 yhy NO3（或酸化水玻璃） ，在pH 值为弱碱性时，对萤石进行了高效的浮选分离。

关键词：萤石；浮选；捕收剂；抑制剂

Abstract

China has a huge amount of fluorite resources, but it does not have a high utilization rate. In order to solve this problem, this paper takes Hunan Shizhuyuan polymetallic mine tailings as the research object, and carries out flotation condition tests on fluorite under the condition of controlled variables, thus achieving the purpose of improving the recovery rate of fluorite tailings resources. The research focus of the experiment is to try different fluorite collectors and collectors and choose the most efficient reagent combination. Therefore, this paper studies the effect of different reagents on the flotation of fluorite tailings under the action of different collectors and collectors by studying the effect of different reagents on the floatability of the mineral and the experimental analysis on the mineral properties. The main research results are as follows:

The test results show that yhy, 733 and BK410 have good collecting ability for fluorite. Under the contrast condition test, BK410,yhy, which has the best collecting effect and the best selection ability for fluorite, is one of the flotation tests. Moreover, through various combination tests of different collectors, it is found that its effect is better than that of a single collector, in which sodium oleate yhy has a positive promoting effect and the best effect is obtained when the ratio of the two is 4: 1. In fluorite flotation experiments, NO3 has the best effect on the selection of inhibitors, and plays a very good role in inhibiting other gangue minerals in fluorite ores. The effect is better than that of common inhibitor sodium silicate and combined inhibitor NL,NS. In the final flotation test, sodium oleate yhy NO3 (or acidified water glass) is used to carry out efficient flotation separation of fluorite when the pH value is weakly alkaline.

Key Words：Fluorite; Flotation; Collector; Inhibitor

目录

摘要 .......................................................................I

Abstract ..................................................................II

目录 .....................................................................III

第1章 绪论.................................................................1

1.1 萤石的性质及用途......................................................1

1.1.1 萤石的基本性质....................................................1

1.1.2 萤石的主要用途....................................................1

1.2 萤石资源分布及概况....................................................2

1.2.1 萤石资源分布......................................................2

1.2.2 我国萤石资源发展前景及趋势........................................3

1.3 柿竹园多金属矿萤石浮选研究现状........................................3

1.4 论文选题背景，内容及意义..............................................4

第2章 试样矿石性质分析.....................................................5

2.1 矿石的化学元素及矿物组成..............................................5

2.2 萤石连生体的分布情况..................................................6

2.3 试样筛析试验结果及萤石的解离度........................................7

第3章 选矿条件试验.........................................................8

3.1 萤石浮选影响条件及浮选药剂研究现状....................................8

3.1.1 萤石浮选影响条件..................................................8

3.1.2 萤石浮选药剂研究现状..............................................9

3.2 磨矿细度试验.........................................................13

3.3 矿物浮选试验流程.....................................................13

3.4 Na2CO3用量试验.......................................................15

3.5 捕收剂条件试验.......................................................15

3.5.1 捕收剂733用量条件试验...........................................15

3.5.2 捕收剂yhy用量条件试验...........................................16

3.5.3 BK410用量条件试验................................................16

3.5.4 捕收剂yhy的组合优化试验.........................................17

3.6 抑制剂条件试验.......................................................18

3.6.1 水玻璃用量条件试验...............................................18

3.6.2 组合抑制剂NO3的作用效果.........................................19

3.6.3 N03与其它酸性水玻璃组合抑制剂的效果比较..........................20

3.7 粗精矿再磨试验.......................................................20

3.8 浮选开路试验.........................................................22

3.9 浮选闭路试验.........................................................24

3.10 浮选精矿强磁........................................................25

3.11 全流程闭路试验......................................................25

第4章 结论................................................................28

参考文献 ..................................................................29

致谢 ......................................................................30

第一章 绪论

1.1萤石的性质及用途

1.1.1萤石的基本性质