Jintao Ma , Lin Chen , Fengjie Zhang , Yadong Zhang , Chao Lv , Jinglei Cui , Xinxing Zhou , Yanxia Guo , Zihe Pan
{"title":"电石渣焙烧磁选提高碳化产品纯度和白度","authors":"Jintao Ma , Lin Chen , Fengjie Zhang , Yadong Zhang , Chao Lv , Jinglei Cui , Xinxing Zhou , Yanxia Guo , Zihe Pan","doi":"10.1016/j.apt.2025.105063","DOIUrl":null,"url":null,"abstract":"<div><div>Although the technology of fixing CO<sub>2</sub> with carbide slag (CS) has developed rapidly, its inherent impurities severely restrict the purity and whiteness of the carbonation products, hindering their high-value utilization. This study systematically explored and revealed the occurrence states of key impurities (Al<sub>2</sub>O<sub>3</sub>, MgO, Fe<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, CaCO<sub>3</sub> and elemental C) in CS. Carbon impurities reduce carbonization efficiency. Fe<sub>2</sub>O<sub>3</sub>, as a colored impurity, severely affects both the purity and whiteness of the product. To overcome this limitation, this study innovatively combined calcination and magnetic separation approaches to remove impurities. The experimental results revealed that this technology can efficiently remove carbon (removal rate of 44.7%) and iron (removal rate of 53.7%), resulting in the purity and whiteness of the carbonation products reaching 91.7% and 98.3%, respectively. Despite the challenges associated with the removal efficiency of carbon impurities and the specificity of magnetic iron impurities, our technology provides a practical and effective solution for improving the quality of CS carbonation products. This work is conducive to the resource utilization of chlor-alkali industrial waste and helps in achieving the broader goal of carbon neutrality.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 11","pages":"Article 105063"},"PeriodicalIF":4.2000,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing the purity and whiteness of carbonated products from carbide slag via calcination and magnetic separation\",\"authors\":\"Jintao Ma , Lin Chen , Fengjie Zhang , Yadong Zhang , Chao Lv , Jinglei Cui , Xinxing Zhou , Yanxia Guo , Zihe Pan\",\"doi\":\"10.1016/j.apt.2025.105063\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Although the technology of fixing CO<sub>2</sub> with carbide slag (CS) has developed rapidly, its inherent impurities severely restrict the purity and whiteness of the carbonation products, hindering their high-value utilization. This study systematically explored and revealed the occurrence states of key impurities (Al<sub>2</sub>O<sub>3</sub>, MgO, Fe<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, CaCO<sub>3</sub> and elemental C) in CS. Carbon impurities reduce carbonization efficiency. Fe<sub>2</sub>O<sub>3</sub>, as a colored impurity, severely affects both the purity and whiteness of the product. To overcome this limitation, this study innovatively combined calcination and magnetic separation approaches to remove impurities. The experimental results revealed that this technology can efficiently remove carbon (removal rate of 44.7%) and iron (removal rate of 53.7%), resulting in the purity and whiteness of the carbonation products reaching 91.7% and 98.3%, respectively. Despite the challenges associated with the removal efficiency of carbon impurities and the specificity of magnetic iron impurities, our technology provides a practical and effective solution for improving the quality of CS carbonation products. This work is conducive to the resource utilization of chlor-alkali industrial waste and helps in achieving the broader goal of carbon neutrality.</div></div>\",\"PeriodicalId\":7232,\"journal\":{\"name\":\"Advanced Powder Technology\",\"volume\":\"36 11\",\"pages\":\"Article 105063\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2025-09-20\",\"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/S0921883125002845\",\"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/S0921883125002845","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}
Enhancing the purity and whiteness of carbonated products from carbide slag via calcination and magnetic separation
Although the technology of fixing CO2 with carbide slag (CS) has developed rapidly, its inherent impurities severely restrict the purity and whiteness of the carbonation products, hindering their high-value utilization. This study systematically explored and revealed the occurrence states of key impurities (Al2O3, MgO, Fe2O3, SiO2, CaCO3 and elemental C) in CS. Carbon impurities reduce carbonization efficiency. Fe2O3, as a colored impurity, severely affects both the purity and whiteness of the product. To overcome this limitation, this study innovatively combined calcination and magnetic separation approaches to remove impurities. The experimental results revealed that this technology can efficiently remove carbon (removal rate of 44.7%) and iron (removal rate of 53.7%), resulting in the purity and whiteness of the carbonation products reaching 91.7% and 98.3%, respectively. Despite the challenges associated with the removal efficiency of carbon impurities and the specificity of magnetic iron impurities, our technology provides a practical and effective solution for improving the quality of CS carbonation products. This work is conducive to the resource utilization of chlor-alkali industrial waste and helps in achieving the broader goal of carbon neutrality.
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.)