Incorporation of in Natura and Calcined Red Muds into Clay Ceramic

Ribeiro, Larissa da Silva; Babisk, Michelle Pereira; Prado, Ulisses Soares do; Monteiro, Sérgio Neves; Vieira, Carlos Maurício Fontes

doi:10.1590/1516-1439.372014

Cited by 18 publications

(11 citation statements)

References 8 publications

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“…Once the increasing of both of these contents lower melt temperatures in ternary diagrams of SiO 2 -Fe 2 O 3 -Al 2 O 3 , it explains the deleterious influence of the mixture addition to the ceramic mass. The use of bauxite residues (red mud) from north Brazil are presented in the literature and showed flexural strengths lower than 5 MPa [10]. The present phases, at thermal treatment temperature of 1200°C, are mullite, quartz and iron oxide (Fe 2 O 3 ), which JCPDF reference codes are 01-089-2644, 01-083-2465 and 01-084-0308, respectively.…”

Section: Figure 3: Flexural Strength In Three-point Bending Test and mentioning

confidence: 89%

Evaluation of kaolin and bauxite from the Amazonian region addition on mechanical-, physical-, chemical properties and microstructural characterization of red ceramic industry clay of Manaus metropolitan region

et al. 2018

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The present work investigated properties of red ceramic from the Amazonian region after the addition of kaolin and bauxite mixture with 0, 10, 20 and 30%wt. in red ceramic industry clay. Assessed mechanical properties were flexural strength and Young's modulus. The assessed physical properties were density and porosity. The microstructural images were assessed with SEM and OM microscopies. The fired samples XRD, the raw materials XRF and the XRD were made for chemical composition and present phases assessments. Samples were manufactured by uniaxial compaction and fired at 1200°C and 1250°C. Samples without the mixture of kaolin/bauxite presented higher assessed properties, with approximately 32 MPa of flexural strength and 12% of porosity with 2.3 g/cm³ density. Although the initial idea of this work was to add the mixture of kaolin/bauxite in the red ceramic industry clay for improving assessed properties of red ceramic fired parts, the red ceramic industry clay without addition presented better properties. Such properties were attributed to the high aluminous materials content in the raw material. This behaviour is correlated to the fact that bauxite from this region presents 55%wt. of iron oxide content with aluminium oxide content lower than 25%wt. Additionally, the assessed properties of the ceramic industry parts fired at 1250°C presented this material as promising material for ceramic products with a better added value.

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Section: Figure 3: Flexural Strength In Three-point Bending Test and mentioning

confidence: 89%

Evaluation of kaolin and bauxite from the Amazonian region addition on mechanical-, physical-, chemical properties and microstructural characterization of red ceramic industry clay of Manaus metropolitan region

et al. 2018

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“…Several researches have reported on the state of the art of using various wastes to red clay-based ceramic products, such as red mud of Bayer process [7], fluorescent lamp glass waste [8], granite waste [9], effluent sludge from paper industry [10], blast furnace sludge [11], and sugarcane bagasse ash [12], among others. This potential is based on basically two particularities of this industrial sector, the characteristics of the raw material and the high production volume [4].…”

Section: The Ceramic Industry As An Active Agent For the Improvement mentioning

confidence: 99%

Recycling of Steelmaking Plant Wastes in Clay Bricks

Vieira¹,

Amaral²,

Monteiro³

2018

Current Topics in the Utilization of Clay in Industrial and Medical Applications

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The steelmaking industrial sector generates a wide variety of solid wastes, predominantly composed of slag, dust, sludge, and scrap. The need to find a correct environmental alternative to recycle steelmaking wastes, as well as the possibility to bring some technical advantageous to clay bricks for civil construction, makes this industrial segment present itself as an excellent alternative for the reuse of these residues. In this way, some studies were presented in this chapter that evaluated the effect of incorporation of different steelmaking plant wastes such as blast furnace sludge, sludge, and slag from oxygen steel-refining process in the physical and mechanical properties of clay bricks for civil construction. As final considerations, the most investigated wastes present a particle size distribution compatible to clay brick processing. Although the wastes display different chemical and mineralogical composition, low amounts are well tolerated by the ceramic, not impairing the physical and mechanical properties. Furthermore, the presence of determined constituent, as, for example, fine coke in blast furnace sludge, can contribute significantly to save energy during the firing stage.

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“…[14][15][16] For instance, Liu et al 17 fabricated the environment friendly ceramic foams with 76.2% total porosity and 5.3 MPa bending strength using lead-zinc mine tailing, silica sand, and red mud as the starting materials. In Ribeiro et al research, 18 porous clay ceramics with 28.6% water absorption and 1.5 MPa flexural strength was prepared by adding red mud. Although red mud can be used to prepare porous ceramics with high porosity, the low mechanical strength seriously limits its application fields.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of porous anorthite ceramics from red mud and fly ash

Xiang

Ding

Zhang

2019

Int J Applied Ceramic Tech

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The porous anorthite ceramics with high porosity, good mechanical strength and low heat conductivity were prepared using red mud and fly ash as raw materials via the pore forming method. The effects of sintering temperature and fly ash on phase evolution, densification, compressive strength, thermal conductivity and microstructure of the ceramic materials were investigated. The results showed that the compressive strength of the porous ceramics had an obvious improvement with the increase in fly ash, and the densification and heat conductivity decreased firstly and then increased. In particular, specimen S2 containing 30 wt% red mud and 40 wt% fly ash sintered at 1150°C had the better performances. It had the water absorption of 18.18%, open porosity of 38.52%, bulk density of 1.29 g/cm 3 , compressive strength of 42.46 MPa, and heat conductivity of 1.24 W/m·K. X-ray diffraction analysis indicated that mullite, anorthite, α-quartz, and diopside ferrian were the dominant phases in the specimens. Scanning electron microscopy micrographs illustrated that plenty of open pores with strip shape and closed pores with axiolitic shape existed in the specimens. Furthermore, the existence of mullite could prevent crack propagation to enhance the energy of inter-granular fracture.It endowed the porous anorthite ceramics with high porosity, good compressive strength, and low heat conductivity. K E Y W O R D Scompressive strength, densification, fly ash, porous ceramics, red mud, thermal conductivity

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Incorporation of in Natura and Calcined Red Muds into Clay Ceramic

Cited by 18 publications

References 8 publications

Evaluation of kaolin and bauxite from the Amazonian region addition on mechanical-, physical-, chemical properties and microstructural characterization of red ceramic industry clay of Manaus metropolitan region

Evaluation of kaolin and bauxite from the Amazonian region addition on mechanical-, physical-, chemical properties and microstructural characterization of red ceramic industry clay of Manaus metropolitan region

Recycling of Steelmaking Plant Wastes in Clay Bricks

Preparation and characterization of porous anorthite ceramics from red mud and fly ash

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