A New Added-Value Application for Steel Wire Drawing Mill Scale Waste in Stoneware Ceramic Products
| Autor: | João A. Labrincha, Maria Paula Seabra, Ana Luisa Lopes, Inês Silveirinha Vilarinho, Carlos Pinto, Jorge Carneiro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Mill scale
Materials science 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Raw material Ceramic matrix composite 01 natural sciences Added value industrial symbiosis General Materials Science 021108 energy Ceramic Leaching (agriculture) 0105 earth and related environmental sciences mill scale Mining engineering. Metallurgy Wire drawing Metallurgy circular economy TN1-997 Metals and Alloys Energy consumption waste valorization stoneware ceramics visual_art visual_art.visual_art_medium |
| Zdroj: | Metals Volume 11 Issue 4 Metals, Vol 11, Iss 661, p 661 (2021) |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met11040661 |
| Popis: | Mill scale (MS) is a iron-rich waste generated in the wire drawing process with high iron content and is still mainly disposed in landfills. The scientific community has been studied its use in other applications such as pigments, concretes, among others. This work aims to study a new added-value application for MS—the development of coloured ceramic pastes. For this purpose, the influence of the added amount (0, 1, 3, 5 and 10 wt.%), the pre-treatment (milling + sieving at 212 μμm), the maximum firing temperature (from 1043 to 1165 ∘C) and the type of furnace (laboratory/industrial) were analysed on the sample’s characteristics. A dark grey stoneware product was obtained through the incorporation of 10 wt.% of MS and leaching tests conducted at pilot scale with cups confirmed its immobilization in the ceramic matrix. Furthermore, it was proved that the firing temperature can be reduced by about 100 ∘C without affecting the specimen’s characteristics. This reduction leads to a considerable decrease in the energy consumption upon firing, inducing economic and environmental advantages. Therefore, this work provides a new added-value application for MS and contributes to the reduction of virgin raw materials consumption and development of more sustainable stoneware products. |
| Databáze: | OpenAIRE |
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