钛铁矿和辉石浮选分离试验研究及抑制剂作用机理

高虎林; 刘建; 罗德强; 董文超; 于云龙; 郝佳美; 秦晓艳

doi:10.13779/j.cnki.issn1001-0076.2022.01.009

钛铁矿和辉石浮选分离试验研究及抑制剂作用机理

1.
昆明理工大学国土资源工程学院, 云南昆明 650093

2.
攀钢集团矿业有限公司设计研究院, 四川攀枝花 617063

基金项目:
省部共建复杂有色金属清洁利用国家重点实验室基金项目(CNMRCUTS2003)

详细信息

作者简介: 高虎林(1998-), 男, 贵州毕节人, 硕士研究生, 主要从事量子化学, 界面化学研究, E-mail: 1970789098@qq.com

通讯作者: 刘建(1984-), 男, 四川广元人, 博士, 教授, 主要从事浮选表界面化学研究, E-mail: vacation2008@126.com

中图分类号: TD923⁺.14;TD952.7

收稿日期: 2021-12-23

刊出日期: 2022-02-25

Experimental Study on Flotation Separation of Ilmenite and Pyroxene and Action Mechanism of Depressants

1.
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

2.
Pangang Group Mining Company Design Research Institute, Panzhihua 617063, China

More Information

Corresponding author: LIU Jian, vacation2008@126.com

Received Date: 23 December 2021

Publish Date: 25 February 2022

摘要

摘要:
以MOH为捕收剂, 水玻璃、草酸、LD-C(一种有机高分子抑制剂)为抑制剂, 对钛铁矿和辉石进行单矿物浮选试验研究, 并通过浮选溶液化学分析、Zeta电位测试和红外光谱测试, 研究了LD-C与钛铁矿和辉石的作用机理。试验结果表明: LD-C对辉石的选择性抑制效果明显优于水玻璃和草酸, 在弱酸性环境(pH=5~6)、捕收剂MOH用量为160 mg/L、抑制剂LD-C用量为2 mg/L的条件下, 钛铁矿回收率为80%, 辉石回收率为9%。LD-C与钛铁矿作用后, 对捕收剂在钛铁矿表面吸附的影响较小。LD-C与辉石作用后会阻碍捕收剂MOH在辉石表面的吸附, 这主要是由于辉石在矿浆中会溶解暴露出钙镁活性位点, 使得LD-C在辉石表面发生强烈的化学吸附, 从而阻碍了捕收剂的吸附。
- 钛铁矿 /
- 辉石 /
- 浮选分离 /
- 抑制剂
Abstract:
Using MOH as collector, sodium silicate, oxalic acid and LD-C (carboxymethyl cellulose) as depressants, single mineral flotation of ilmenite and pyroxene was carried out. In addition, the interaction mechanism of LD-C with ilmenite and pyroxene was studied by solution chemistry of flotation, zeta potential test and infrared spectroscopic test. The test results show that the selective depression effect of LD-C on pyroxene was significantly better than that of sodium silicate and oxalic acid. Under weak acidic conditions, and the dosage of collector MOH was 160 mg/L, depressant LD-C was 2 mg/L, the recovery of ilmenite can reach 80% and that of pyroxene was 9%. The interaction of LD-C on pyroxene can hinder the subsequent adsorption of MOH while that on ilmenite has little effect on the adsorption of MOH. This due to the fact that the active sites of Ca and Mg exposed on the pyroxene surface during flotation can make LD-C adsorb on pyroxene strongly, which hindering the adsorption of collector.
- ilmenite /
- pyroxene /
- flotation separation /
- depressants

HTML全文

图 1 钛铁矿和辉石晶体结构示意图：(a)钛铁矿；(b)辉石

Figure 1.

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图 2 钛铁矿和辉石的X射线衍射图：(a)钛铁矿；(b)辉石

Figure 2.

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图 3 捕收剂用量对钛铁矿和辉石可浮性的影响(柴油用量: 10mg/L; pH: 5~6)

Figure 3.

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图 4 水玻璃用量与矿物可浮性的关系(捕收剂用量: 160 mg/L; 柴油用量: 10 mg/L; pH: 5~6)

Figure 4.

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图 5 草酸用量与矿物可浮性的关系(捕收剂用量: 160 mg/L; 柴油10 mg/L; pH: 5~6)

Figure 5.

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图 6 LD-C用量与矿物可浮性的关系(捕收剂用量: 160mg/L; 柴油用量：10mg/L；pH: 5~6)

Figure 6.

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图 7 钛铁矿浮选溶液浓度对数图

Figure 7.

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图 8 钛铁矿、钛铁矿+LD-C、钛铁矿+LD-C+MOH在不同pH下的Zeta电位(MOH用量：160 mg/L；LD-C用量：20 mg/L)

Figure 8.

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图 9 辉石、辉石+LD-C、辉石+LD-C+MOH在不同pH下的Zeta电位(MOH用量：160 mg/L；LD-C用量：20 mg/L)

Figure 9.

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图 10 LD-C与钛铁矿作用的红外光谱

Figure 10.

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图 11 LD-C与辉石作用的红外光谱

Figure 11.

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