Combining mineral and clay-based wastes to produce porcelain-like ceramics: An exploratory study

Junkes, J.; Prates, P.B.; Hotza, Dachamir; Segadães, Ana M.

doi:10.1016/j.clay.2012.08.009

Cited by 25 publications

(16 citation statements)

References 21 publications

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“…It has been reported by Ponsot et al [22] that works on recycled glass using direct sintering produced a good result in water absorption and specific strength. Since the present study is aimed to develop a heat treatment schedule, different ranges of heating rates were imposed in order to examine the effects on material properties, since the properties of glass ceramic were influenced by heating rate and temperature [17,18]. A summary of the main thermal event of recycled SLS glass is tabulated in Table 2.…”

Section: Differential Thermal Analysis -(Dta) Recycled Soda Lime Silimentioning

confidence: 99%

Effects of heating rates and SBE loading on sintered properties of spent bleach earth/recycled glass composite

Salleh¹,

Shamsudin²,

Juoi³

et al. 2017

J. MECH. ENG. SCI.

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The purpose of this study is to investigate the influence of different heating rates on the properties of glass ceramic composite (GCC) at different spent bleach earth (SBE) loadings. GCC was prepared using SBE and recycled soda lime silicate (SLS) glass. The particle size of SLS glass was approximately <45µm. The GCC was formed by uniaxial dry pressing at weight fractions of SBE loading of 40 wt. %, 45 wt. %, and 55 wt. %. The GCC was then sintered at different heating rates of 2 ºC/min, 4 ˚C/min, 6 ºC/min and 8 ˚C/min at 700 ºC of sintering temperature. The GCC specimens were analysed in terms of their physical properties, while crystalline phase and microstructure were characterised using X-Ray diffraction and scanning electron microscope (SEM), respectively. The results from X-Ray diffraction pattern showed that quartz and wollastonite phases were formed with no major changes on the phases as the heating rate increased. The results indicate that the variation of heating with 2 ºC/min interval does not give a remarkable result of physical properties on GCC. High loading of SBE sintered at 2 ºC/min of heating rate produced low water absorption, density and porosity. SEM analysis showed that the physical properties and crystalline phases were correlated to the SBE loading and changes in the heating rate. The study concluded with the prospect of continuing the work of optimisation on schedule heat treatment at sintering temperature regimes.

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Section: Differential Thermal Analysis -(Dta) Recycled Soda Lime Silimentioning

confidence: 99%

Effects of heating rates and SBE loading on sintered properties of spent bleach earth/recycled glass composite

Salleh¹,

Shamsudin²,

Juoi³

et al. 2017

J. MECH. ENG. SCI.

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“…On the other hand, varvite is a singular sedimentary rock whose formation was controlled by the yearly succession of seasonal deposits producing alternately thinner and thicker bands of silt or clay. Junkes et al [158] studied a new method of manufacturing porcelain ceramics using only waste as gneiss and varvite powders together with sludge from potable water preparation processes (PWS) and clay-based waste as plastic components. The gneiss residue was composed of SiO 2 , Al 2 O 3 , Fe 2 O 3 and alkaline and alkaline earth oxides, while the varvite mud contained mostly SiO 2 .…”

Section: Gneiss and Varvite Wastementioning

confidence: 99%

Mullite-Based Ceramics from Mining Waste: A Review

et al. 2021

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Mullite (3Al2O3·2SiO2) is an aluminosilicate characterized by excellent physical properties, which makes it an important ceramic material. In this way, ceramics based on mullite find applications in different technological fields as refractory material (metallurgy, glass, ceramics, etc.), matrix in composite materials for high temperature applications, substrate in multilayer packaging, protective coatings, components of turbine engines, windows transparent to infrared radiation, etc. However, mullite is scarce in nature so it has to be manufactured through different synthesis methods, such as sintering, melting-crystallization or through a sol-gel route. Commonly, mullite is fabricated from pure technical grade raw materials, making the manufacturing process expensive. An alternative to lowering the cost is the use of mining waste as silica (SiO2) and alumina (Al2O3) feedstock, which are the necessary chemical compounds required to manufacture mullite ceramics. In addition to the economic benefits, the use of mining waste brings out environmental benefits as it prevents the over-exploitation of natural resources and reduces the volume of mining waste that needs to be managed. This article reviews the scientific studies carried out in order to use waste (steriles and tailings) generated in mining activities for the manufacture of clay-based ceramic materials containing mullite as a main crystalline phase.

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“…Thus, the ceramic industry, particularly the sector dealing with construction materials, can be regarded as a potentially high consumer of wastes from other industrial sources. This also brought to light the need to re-evaluate the large quantities of minerals formerly rejected due to incomplete fulfilment of standard requirements [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 98%

Low-valued raw materials challenge the common eligibility criteria for triaxial ceramics

Echeverrigaray

Emiliano

Segadães

et al. 2016

Ceramics International

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Combining mineral and clay-based wastes to produce porcelain-like ceramics: An exploratory study

Cited by 25 publications

References 21 publications

Effects of heating rates and SBE loading on sintered properties of spent bleach earth/recycled glass composite

Effects of heating rates and SBE loading on sintered properties of spent bleach earth/recycled glass composite

Mullite-Based Ceramics from Mining Waste: A Review

Low-valued raw materials challenge the common eligibility criteria for triaxial ceramics

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