Development of ceramic based on steel slag with different magnesium content

Ai, Xingang; Li, Y.; Gu, Xinfu; Cang, Daqiang

doi:10.1179/1743676113y.0000000078

Cited by 16 publications

(6 citation statements)

References 18 publications

(28 reference statements)

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“…The authors also reported that increasing EAF slag to 50 wt.% would produce ceramic tiles that were too brittle. Similar research works were conducted by [20][21][22]29,[102][103][104][105][106][107][108][109][110], who mutually agreed that the optimal amount of EAF slag added was in the range of 30-50 wt.%. Meanwhile, the optimal firing temperature for the ceramic product incorporated with EAF slag was in the range of 1050 • C-1250 • C. Most of these studies were able to prove that the ceramic product incorporated with EAF slag had physical and mechanical properties comparable with commercially available products.…”

Section: Raw Materials For Ceramic Productssupporting

confidence: 56%

Assessment of Electric Arc Furnace (EAF) Steel Slag Waste’s Recycling Options into Value Added Green Products: A Review

Teo

Zakaria

Salleh

et al. 2020

Metals

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Steel slag is one of the most common waste products from the steelmaking industry. Conventional methods of slag disposal can cause negative impacts on humans and the environment. In this paper, the process of steel and steel slag production, physical and chemical properties, and potential options of slag recycling were reviewed. Since steel is mainly produced through an electric arc furnace (EAF) in Malaysia, most of the recycling options reviewed in this paper focused on EAF slag and the strengths and weaknesses of each recycle option were outlined. Based on the reports from previous studies, it was found that only a portion of EAF slag is recycled into more straightforward, but lower added value applications such as aggregates for the construction industry and filter/absorber for wastewater treatments. On the other hand, higher added value recycling options for EAF slag that are more complicated such as incorporated as raw material for Portland cement and ceramic building materials remain at the laboratory testing stage. The main hurdle preventing EAF slag from being incorporated as a raw material for higher added value industrial applications is its inconsistent chemical composition. The chemical composition of EAF slag can vary based on the scrap metal used for steel production. For this, mineral separation techniques can be introduced to classify the EAF slag base on its physical and chemical compositions. We concluded that future research on recycling EAF slag should focus on separation techniques that diversify the recycling options for EAF slag, thereby increasing the waste product’s recycling rate.

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Section: Raw Materials For Ceramic Productssupporting

confidence: 56%

Assessment of Electric Arc Furnace (EAF) Steel Slag Waste’s Recycling Options into Value Added Green Products: A Review

Teo

Zakaria

Salleh

et al. 2020

Metals

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“…Al 2 O 3 is first involved in the formation of anorthite, followed by the disappearance of the anorthite phase into the liquid phase, and finally, solid solution into the pyroxene phase. Ai et al [22] prepared steel slag ceramics with different MgO contents, and studied the influence of MgO on sintering temperature and crystal phase.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Steel Slag Ceramics with Different MgO/Al2O3 Ratios

et al. 2019

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Steel slag, clay, quartz, feldspar, and talc were mixed to prepare steel slag ceramics. Crystalline phase transitions, microstructures, and the main physical-mechanical properties (water absorption, linear shrinkage, and flexural strength) of steel slag ceramics for various MgO/Al2O3 ratios were investigated by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and mechanical testing. The results indicated the significant effect of the MgO/Al2O3 ratio on these properties. A decrease in the MgO/Al2O3 ratio resulted in a major crystalline phase transformation from quartz and pyroxene phases to quartz and anorthite phases. High MgO content facilitated production of pyroxene phases. High Al2O3 content favored production of anorthite phases. The water absorption of all the samples (below 0.5%) met the Chinese national standard requirements. Samples with an MgO/Al2O3 ratio of 0.6 exhibited excellent flexural strength, reaching 62.20 MPa. FactSage software was used to predict batch viscosity, which increased with decreasing MgO/Al2O3 ratios.

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“…Bauxite is widely distributed in nature as a natural alumina mineral. The high-grade bauxite contains alumina up to 85% or more, and the other components such as SiO 2 , TiO 2, and CaO can be used as natural additives for alumina sintering, that can effectively reduce the sintering temperature and porosity and improve the properties of the materials [21]. At present, bauxite is only used as a raw material for extracting alumina or preparing refractories [22,23,24,25,26].…”

Section: Introductionmentioning

confidence: 99%

Natural Advantages of Preparation of Composites from Minerals: Effect of Bauxite Addition on the Microstructures and Properties of Fe-Al2O3 Based Composites

Chen

Shi

et al. 2019

Materials

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Fe-Al2O3 composites were prepared by pressureless sintering, using Bayan Obo iron concentrate and bauxite as the main raw materials, activated carbon was added as the reducing agent. The effects of different bauxite additions on the phase composition, microstructures, mechanical properties, and the corrosion-resistance were investigated. The results show that the average grain size of alumina decreased as the bauxite content increased. In addition, bauxite contains TiO2, CaO, and MgO, that can form a liquid phase at high temperature, causing the heat capacity of the micro-zone around the metal phase to be different, which leads to a change of undercooling and further affects the dislocation density of the metal phase. The plastic deformation ability of the metal phase can be improved with the low dislocation density. Fracture mechanism analysis indicated that the metal phase absorbed energy through plastic deformation. The optimum performance of the sample was as follows: the flexural strength was 310 MPa, the hardness 12.14 GPa, the alkali resistance 98.32%, and the acid resistance 95.44%.

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Development of ceramic based on steel slag with different magnesium content

Cited by 16 publications

References 18 publications

Assessment of Electric Arc Furnace (EAF) Steel Slag Waste’s Recycling Options into Value Added Green Products: A Review

Assessment of Electric Arc Furnace (EAF) Steel Slag Waste’s Recycling Options into Value Added Green Products: A Review

Preparation of Steel Slag Ceramics with Different MgO/Al2O3 Ratios

Natural Advantages of Preparation of Composites from Minerals: Effect of Bauxite Addition on the Microstructures and Properties of Fe-Al2O3 Based Composites

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