A novel resource recovery strategy: Substituting carbon powder with organic solid waste in the production of zinc-bearing dust sludge metallization pellets

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL Powder Technology Pub Date : 2024-09-28 DOI:10.1016/j.powtec.2024.120328

Chunlong Fan , Chengyi Ding , Xuchao Wang , Sheng Xue , Rende Chang , Hongming Long

引用次数: 0

Abstract

This study addresses the issues of difficult to treat organic solid waste and significant secondary pollution generated in the current steelmaking process by using the RHF process. Using pyrolytic slag of waste cloth and mill roll sludge produced in steel plants as raw materials, this study explores the feasibility of replacing part of the carbon powder with organic solid waste to produce metallized pellets. The results indicate that this method is feasible. With 12 % carbon addition, a roasting temperature of 1200 °C, a roasting time of 30 min, and a pellet size of 12 mm–14 mm, the metallization rate and de‑zincification rate of the pellets produced with organic solid waste replacing part of the carbon powder are both improved compared to those with full carbon powder. The metallization rate of these pellets can exceed 90 %, and the de‑zincification rate can consistently remain above 99 %.

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新型资源回收战略：用有机固体废弃物替代碳粉生产含锌尘泥金属化颗粒

本研究利用 RHF 工艺解决了目前炼钢过程中产生的难以处理的有机固体废物和严重的二次污染问题。本研究以钢铁厂产生的废布热解渣和轧辊污泥为原料，探讨了用有机固体废弃物替代部分碳粉生产金属化球团的可行性。结果表明，这种方法是可行的。在碳添加量为 12%、焙烧温度为 1200 ℃、焙烧时间为 30 分钟、球团尺寸为 12 mm-14 mm 的条件下，用有机固体废弃物代替部分碳粉生产的球团的金属化率和脱锌率都比用全部碳粉生产的球团有所提高。这些颗粒的金属化率可超过 90%，脱锌率可持续保持在 99% 以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.