羧甲基壳聚糖对利用油酸钠从方解石中选择性浮选分离铁燧岩的影响

IF 4.2 2区 工程技术 Q2 ENGINEERING, CHEMICAL
{"title":"羧甲基壳聚糖对利用油酸钠从方解石中选择性浮选分离铁燧岩的影响","authors":"","doi":"10.1016/j.apt.2024.104604","DOIUrl":null,"url":null,"abstract":"<div><p>Addressing the persistent challenge of separating smithsonite from calcite using flotation method, this study explores the impact of carboxymethyl chitosan (CMCS) on selective separation using sodium oleate (NaOL) assisted flotation. Results indicated a substantial reduction in calcite recovery to 2.25 % with the addition of 40 mg/L CMCS at pH 9, while recovery of smithsonite remained essentially unchanged at 94.78 %. Moreover, we found that using CMCS as the depressant can effectively separate smithsonite from calcite, based on the flotation testing results with artificially mixed minerals. Contact angle tests results showed that CMCS can significantly lower the surface hydrophobicity of calcite without any negative effect on that of smithsonite when using NaOL as a collector. TOC, FTIR, AFM, and ToF-SIMS analyses demonstrated stronger adsorption of CMCS on the surface of calcite compared to smithsonite. XPS data, solution chemical analysis and DFT revealed interaction between –COO- in CMCS with Ca sites on the surface of calcite because of the electrostatic adsorption and chemical adsorption, forming −COOCa. It leaded to shielding effects on the NaOL adsorption stemming, which makes NaOL more adsorbed on smithsonite surface.</p></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of carboxymethyl chitosan on selective flotation separation of smithsonite from calcite with sodium oleate\",\"authors\":\"\",\"doi\":\"10.1016/j.apt.2024.104604\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Addressing the persistent challenge of separating smithsonite from calcite using flotation method, this study explores the impact of carboxymethyl chitosan (CMCS) on selective separation using sodium oleate (NaOL) assisted flotation. Results indicated a substantial reduction in calcite recovery to 2.25 % with the addition of 40 mg/L CMCS at pH 9, while recovery of smithsonite remained essentially unchanged at 94.78 %. Moreover, we found that using CMCS as the depressant can effectively separate smithsonite from calcite, based on the flotation testing results with artificially mixed minerals. Contact angle tests results showed that CMCS can significantly lower the surface hydrophobicity of calcite without any negative effect on that of smithsonite when using NaOL as a collector. TOC, FTIR, AFM, and ToF-SIMS analyses demonstrated stronger adsorption of CMCS on the surface of calcite compared to smithsonite. XPS data, solution chemical analysis and DFT revealed interaction between –COO- in CMCS with Ca sites on the surface of calcite because of the electrostatic adsorption and chemical adsorption, forming −COOCa. It leaded to shielding effects on the NaOL adsorption stemming, which makes NaOL more adsorbed on smithsonite surface.</p></div>\",\"PeriodicalId\":7232,\"journal\":{\"name\":\"Advanced Powder Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Powder Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921883124002802\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921883124002802","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0

摘要

针对利用浮选法分离铁燧岩和方解石这一长期存在的难题,本研究探讨了羧甲基壳聚糖(CMCS)对利用油酸钠(NaOL)辅助浮选法进行选择性分离的影响。结果表明,在 pH 值为 9 的条件下,添加 40 毫克/升的 CMCS 后,方解石的回收率大幅降低至 2.25%,而铁石棉的回收率基本保持不变,仍为 94.78%。此外,根据人工混合矿物的浮选测试结果,我们发现使用 CMCS 作为抑制剂可以有效地将铁燧石与方解石分离开来。接触角测试结果表明,当使用 NaOL 作为捕收剂时,CMCS 可以显著降低方解石的表面疏水性,而对铁石棉的表面疏水性没有任何负面影响。TOC、傅立叶变换红外光谱、原子力显微镜和 ToF-SIMS 分析表明,与铁石棉相比,CMCS 在方解石表面的吸附力更强。XPS 数据、溶液化学分析和 DFT 显示,由于静电吸附和化学吸附作用,CMCS 中的 -COO- 与方解石表面的 Ca 位点相互作用,形成 -COOCa。这对 NaOL 的吸附产生了屏蔽效应,使 NaOL 更多地被吸附在方解石表面。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Influence of carboxymethyl chitosan on selective flotation separation of smithsonite from calcite with sodium oleate

Influence of carboxymethyl chitosan on selective flotation separation of smithsonite from calcite with sodium oleate

Addressing the persistent challenge of separating smithsonite from calcite using flotation method, this study explores the impact of carboxymethyl chitosan (CMCS) on selective separation using sodium oleate (NaOL) assisted flotation. Results indicated a substantial reduction in calcite recovery to 2.25 % with the addition of 40 mg/L CMCS at pH 9, while recovery of smithsonite remained essentially unchanged at 94.78 %. Moreover, we found that using CMCS as the depressant can effectively separate smithsonite from calcite, based on the flotation testing results with artificially mixed minerals. Contact angle tests results showed that CMCS can significantly lower the surface hydrophobicity of calcite without any negative effect on that of smithsonite when using NaOL as a collector. TOC, FTIR, AFM, and ToF-SIMS analyses demonstrated stronger adsorption of CMCS on the surface of calcite compared to smithsonite. XPS data, solution chemical analysis and DFT revealed interaction between –COO- in CMCS with Ca sites on the surface of calcite because of the electrostatic adsorption and chemical adsorption, forming −COOCa. It leaded to shielding effects on the NaOL adsorption stemming, which makes NaOL more adsorbed on smithsonite surface.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Advanced Powder Technology
Advanced Powder Technology 工程技术-工程:化工
CiteScore
9.50
自引率
7.70%
发文量
424
审稿时长
55 days
期刊介绍: The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信