Incorporation of residues from the minero-metallurgical industry in the production of clay–lime brick

RESUMOEste trabalho tem por objetivo caracterizar o desempenho de resistência mecânica e absorção de água de blocos solo-cimento para alvenaria, após 28 dias de cura, com a incorporação limite dos seguintes coprodutos siderúrgicos em substituição parcial ao solo: adições de até 20 % em massa do pó de balão coletado em altoforno, até 10 % de poeiras de despoeiramento de aciaria elétrica, e até 20 % de escória granulada de forno elétrico a arco. As formulações propostas incluem adições simultâneas de pós obtidos do descarte da produção de blocos solo-cimento, onde a substituição parcial ao solo foi de até 20 % em massa. Os resultados obtidos sugerem a potencialidade de uso dos resíduos siderúrgicos em blocos intertravados de solo-cimento para alvenaria sustentável, como alternativa de aplicação para esses resíduos. Verificou-se a possibilidade de bons resultados confrontando os valores exigidos por norma (absorção de água < 20% e resistência mecânica > 2,0 MPa) com destaque quando se utilizou 20% pó de balão juntamente com 10% de reuso do bloco solocimento; 10% de escória de aciaria ou 20% de escória de aciaria juntamente com 10% de reuso do bloco solo-cimento; e 2,5% de pó de despoeiramento juntamente com 20% de reuso do bloco solo-cimento. Palavras-chave:Coprodutos siderúrgicos, solo-cimento, alvenaria sustentável, estabilização. ABSTRACTThis work aims to characterize the mechanical resistance performance and water absorption of soil-cement blocks for masonry, after 28 days of moist curing, with the incorporation limit of the following steel coproducts to partial replacement of soil: up to 20% by weight of balloon blast furnace dust powder additions, 10% of dedusting dust secondary from electric arc furnace, and 20% of granulated slag of electric arc furnace. The proposed formulations also evaluated simultaneous additions of soil-cement blocks discarded, after granulated by crushing, with partial replacement of soil in up to 20% by mass. The results suggest the potential use of steel residues in soil-cement interlocked blocks for sustainable masonry, as applying alternative to this waste. It was found that the results that stood out, comparing standard specification (water absorption < 20% and strength > 2.0 MPa), the results that stood out were using 20% powder flask along with a 10% reuse of the soil-cement block; 10% of steel slag or 20% of steel slag with 10% reuse of soil-cement block; and 2.5% dusting powder with 20% reuse of the soil-cement block.

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“…Estudos utilizando escória Fe-Si-Mn atingiram a especificação de 2,0 MPa somente depois de 60 dias de cura [25].…”

Section: Figuraunclassified

Avaliação das propriedades físicas e mecânicas de blocos de solo-cimento formulados com coprodutos siderúrgicos

et al. 2016

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“…The possibility of incorporating waste materials as a partial replacement of ceramic raw materials can contribute to the aforesaid target by decreasing the volume required for raw materials, besides the obvious environmental advantages. The incorporation of wastes into ceramic bricks (Ferreira et al, 2015), concrete (Torkaman et al, 2014) and ceramic tiles (Pinheiro and Holanda, 2013) has been investigated previously, demonstrating the viability of reusing industrial wastes in ceramic products.…”

Section: Introductionmentioning

confidence: 99%

Wood waste incorporation for lightweight porcelain stoneware tiles with tailored thermal conductivity

Novais

Seabra

Labrincha

2015

Journal of Cleaner Production

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“…In the production of ferromanganese from primary sources, a large amount of waste is generated in the settling tanks that store the wastewater in the facilities; they originate predominantly from raw material storages (e.g., manganese ore and reducing agents), drainage gutters and slag. This waste amount has been determined as approximately 50 kg per ton of alloy [3,[5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of mill scale usage on thermodynamic modeling and metallothermic production of FeMn alloys

Buğdaycı¹

2021

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Ferromanganese (FeMn) is an alloy that is generally used to increase the wear resistance of steels and can be produced with high energy systems. In this study, the material produced by the metallothermic reduction method and a serious energy saving is achieved. In studies conducted for FeMn production, optimum recovery conditions were determined for varying aluminum stoichiometries. In addition, mill scale was used as a source to obtain the Fe structure in the alloy, and waste material was evaluated. In addition, magnetite was used as a source of iron oxide, and the recovery values of these products were compared with the mill scale. The characterization of the produced materials was determined by XRD, optical microscope and hardness methods. According to the results, the highest recovery is 110 % Al stoc. with magnetite, 98.58 % for Fe, and 85 % for Mn. The hardness value of the same sample gave the highest result with 64.65 HRC.

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Incorporation of residues from the minero-metallurgical industry in the production of clay–lime brick

Cited by 34 publications

References 6 publications

Avaliação das propriedades físicas e mecânicas de blocos de solo-cimento formulados com coprodutos siderúrgicos

Avaliação das propriedades físicas e mecânicas de blocos de solo-cimento formulados com coprodutos siderúrgicos

Wood waste incorporation for lightweight porcelain stoneware tiles with tailored thermal conductivity

Effect of mill scale usage on thermodynamic modeling and metallothermic production of FeMn alloys

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