Lin Li, Tao Jiang, Qiang Yang, Yanli Ren, Jie Xu, Zhiqiao Li, Xinyu An
{"title":"利用含氯钛提取高炉渣和硅藻土制备轻质硅酸钙板","authors":"Lin Li, Tao Jiang, Qiang Yang, Yanli Ren, Jie Xu, Zhiqiao Li, Xinyu An","doi":"10.1007/s10163-024-02036-z","DOIUrl":null,"url":null,"abstract":"<div><p>Chlorine-containing Ti-extraction blast furnace slag (TEBFS) is a solid waste produced during titanium removal from high-titanium blast furnace slag. Large amounts of TEBFS affect the local environment and severely limit further process development. A lightweight calcium silicate board was successfully prepared via hydrothermal synthesis. When the mass ratio of TEBFS: Portland cement: diatomite: calcium hydroxide: quartz was 46∶15∶17∶13.9∶8.1, the bulk density, bending strength, and thermal conductivity of the sample were 1.23 g/cm<sup>3</sup>, 8.2 MPa, and 0.299 W/(m·K), respectively. The overall sample performance met the D1.3 category requirements in the national standard. After being immersed in water with stirring at 30 °C for 60 min, the sample exhibited a curing chlorine efficiency of 40.6%. Mechanical grinding increased slag activity and sample performance. Grinding for 3 min, the activity index of the slag was 72.74%, and the bending strength of the sample increased to 8.7 MPa. Increasing the pozzolanic activity of the slag and reducing the amount of aggregate produced between particles had a positive effect on optimizing sample performance. This paper provides a feasible method for the diversification and clean utilization of TEBFS.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":"26 5","pages":"3137 - 3152"},"PeriodicalIF":2.7000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10163-024-02036-z.pdf","citationCount":"0","resultStr":"{\"title\":\"Preparation of a lightweight calcium silicate board using chlorine-containing Ti-extraction blast furnace slag and diatomite\",\"authors\":\"Lin Li, Tao Jiang, Qiang Yang, Yanli Ren, Jie Xu, Zhiqiao Li, Xinyu An\",\"doi\":\"10.1007/s10163-024-02036-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Chlorine-containing Ti-extraction blast furnace slag (TEBFS) is a solid waste produced during titanium removal from high-titanium blast furnace slag. Large amounts of TEBFS affect the local environment and severely limit further process development. A lightweight calcium silicate board was successfully prepared via hydrothermal synthesis. When the mass ratio of TEBFS: Portland cement: diatomite: calcium hydroxide: quartz was 46∶15∶17∶13.9∶8.1, the bulk density, bending strength, and thermal conductivity of the sample were 1.23 g/cm<sup>3</sup>, 8.2 MPa, and 0.299 W/(m·K), respectively. The overall sample performance met the D1.3 category requirements in the national standard. After being immersed in water with stirring at 30 °C for 60 min, the sample exhibited a curing chlorine efficiency of 40.6%. Mechanical grinding increased slag activity and sample performance. Grinding for 3 min, the activity index of the slag was 72.74%, and the bending strength of the sample increased to 8.7 MPa. Increasing the pozzolanic activity of the slag and reducing the amount of aggregate produced between particles had a positive effect on optimizing sample performance. This paper provides a feasible method for the diversification and clean utilization of TEBFS.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":643,\"journal\":{\"name\":\"Journal of Material Cycles and Waste Management\",\"volume\":\"26 5\",\"pages\":\"3137 - 3152\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s10163-024-02036-z.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Material Cycles and Waste Management\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10163-024-02036-z\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Material Cycles and Waste Management","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s10163-024-02036-z","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Preparation of a lightweight calcium silicate board using chlorine-containing Ti-extraction blast furnace slag and diatomite
Chlorine-containing Ti-extraction blast furnace slag (TEBFS) is a solid waste produced during titanium removal from high-titanium blast furnace slag. Large amounts of TEBFS affect the local environment and severely limit further process development. A lightweight calcium silicate board was successfully prepared via hydrothermal synthesis. When the mass ratio of TEBFS: Portland cement: diatomite: calcium hydroxide: quartz was 46∶15∶17∶13.9∶8.1, the bulk density, bending strength, and thermal conductivity of the sample were 1.23 g/cm3, 8.2 MPa, and 0.299 W/(m·K), respectively. The overall sample performance met the D1.3 category requirements in the national standard. After being immersed in water with stirring at 30 °C for 60 min, the sample exhibited a curing chlorine efficiency of 40.6%. Mechanical grinding increased slag activity and sample performance. Grinding for 3 min, the activity index of the slag was 72.74%, and the bending strength of the sample increased to 8.7 MPa. Increasing the pozzolanic activity of the slag and reducing the amount of aggregate produced between particles had a positive effect on optimizing sample performance. This paper provides a feasible method for the diversification and clean utilization of TEBFS.
期刊介绍：
The Journal of Material Cycles and Waste Management has a twofold focus: research in technical, political, and environmental problems of material cycles and waste management; and information that contributes to the development of an interdisciplinary science of material cycles and waste management. Its aim is to develop solutions and prescriptions for material cycles.
The journal publishes original articles, reviews, and invited papers from a wide range of disciplines related to material cycles and waste management.
The journal is published in cooperation with the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM).
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