A new way to efficient utilization of eggshell waste: As green dephosphorization agent and accelerator for reduction roasting of high-phosphorus oolitic iron ore

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2023-05-01 DOI:10.1016/j.psep.2023.03.058

Shichao Wu, Tichang Sun, Hongda Xu

{"title":"A new way to efficient utilization of eggshell waste: As green dephosphorization agent and accelerator for reduction roasting of high-phosphorus oolitic iron ore","authors":"Shichao Wu, Tichang Sun, Hongda Xu","doi":"10.1016/j.psep.2023.03.058","DOIUrl":null,"url":null,"abstract":"<div>The cleaning and efficient disposal of eggshell waste presents many challenges. Reduction roasting of high-phosphorus oolitic iron ore (HPOIO) requires the addition of expensive alkali metal compounds to enhance dephosphorization. In this paper, the eggshell waste from the catering industry was used to replace traditional dephosphorization agents, which not only avoided environmental problems caused by mining, but also improved dephosphorization and iron extraction, and reduced production costs. Under suitable conditions, powdery reduced iron (PRI) comprising 93.04% iron and 0.09% phosphorus was produced. PRI is a premium steelmaking feedstock with 93.11% iron recovery. Mechanism research shows that an appropriate eggshell waste dosage inhibited the reduction of apatite in HPOIO, reacted with phosphorus in iron minerals to form apatite, and promoted the metallization of iron. Moreover, compared with blast furnace ironmaking, this process significantly reduced carbon emissions. It provides a new idea for the green utilization of eggshell waste.</div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"173 ","pages":"Pages 702-714"},"PeriodicalIF":6.9000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0957582023002628","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 1

Abstract

The cleaning and efficient disposal of eggshell waste presents many challenges. Reduction roasting of high-phosphorus oolitic iron ore (HPOIO) requires the addition of expensive alkali metal compounds to enhance dephosphorization. In this paper, the eggshell waste from the catering industry was used to replace traditional dephosphorization agents, which not only avoided environmental problems caused by mining, but also improved dephosphorization and iron extraction, and reduced production costs. Under suitable conditions, powdery reduced iron (PRI) comprising 93.04% iron and 0.09% phosphorus was produced. PRI is a premium steelmaking feedstock with 93.11% iron recovery. Mechanism research shows that an appropriate eggshell waste dosage inhibited the reduction of apatite in HPOIO, reacted with phosphorus in iron minerals to form apatite, and promoted the metallization of iron. Moreover, compared with blast furnace ironmaking, this process significantly reduced carbon emissions. It provides a new idea for the green utilization of eggshell waste.

查看原文本刊更多论文

蛋壳废弃物高效利用的新途径：作为高磷鲕状铁矿还原焙烧的绿色脱磷剂和促进剂

蛋壳废弃物的清洁和高效处理带来了许多挑战。高磷鲕状铁矿（HPOIO）的还原焙烧需要添加昂贵的碱金属化合物来提高脱磷效果。本文利用餐饮业的蛋壳废料代替传统的脱磷剂，既避免了采矿带来的环境问题，又改善了脱磷和提铁效果，降低了生产成本。在适宜的条件下，制备了含93.04%铁和0.09%磷的粉末还原铁（PRI）。PRI是一种优质的炼钢原料，铁回收率为93.11%。机理研究表明，适当的蛋壳废料用量抑制了HPOIO中磷灰石的还原，与铁矿物中的磷反应生成磷灰石，促进了铁的金属化。此外，与高炉炼铁相比，该工艺显著减少了碳排放。为蛋壳废弃物的绿色利用提供了新思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.