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This paper investigates the properties of Sago pith waste ash (SPWA) from agricultural waste using different calcination temperatures (500°C, 700°C and 1000°C). Chemical characteristic of SPWA was first investigated by using X-ray fluorescence (XRF) followed by XRD analysis as a verification of the mineralogical phases present in the SPWAs.
Abstract： By utilizing fly ash from the Shanghai Yuqiao municipal solid waste (MSW) incineration plant as the main raw material,wollastonite-based glass-ceramics were successfully synthesized in the laboratory by doping with SiO 2, Al 2 O 3, NaOH as
Characterization of Wollastonite Glass-ceramics Made from Waste Glass and Coal Fly Ash February 2013 Journal of Materials Science and Technology -Shenyang- 29(2):149–153
wollastonite from waste ash rodiziogrill. Wollastonite glassceramics were prepared from waste glass and fly ash by using the primary powder sintering. The sinterability, crystallisation kinetics and mechanical property of glassceramics have been investigated systematically with respect to the influence of particle size of raw materials.
Wollastonite glass-ceramics were prepared from waste glass and fly ash by using the primary powder sintering. The sinterability, crystallisation kinetics and mechanical property of glass-ceramics have been investigated systematically with respect to the influence of particle size of raw materials.
One of the most formed after heating at high temperatures as needles, prisms or ribbons important wollastonite glass-ceramic for applications in the construc- and remains metastable in glassy matrices. tion industry is produced by the Japanese company "Nippon Electric Industrial waste, slag ash, or fly ash is used as raw material in the ...
obtaining wollastonite from various calcium and silicon-containing technogenic wastes accumulated on the territory of the Russian Federation. We proposed a method for producing autoclave needle-like wollastonite from waste of boric acid (borogipsa) containing both calcium and silicon constituents.
Wollastonite glass-ceramics was prepared from the coal fly ash of the thermal power plant and waste glass cullet of the mixed waste glass to solve recycling problems. FE-SEM and EDS analyses of the glass-ceramics indicated that with increasing heat treatment temperature from 850 to 1050 °C, aggregate-shape grains in glass-ceramics matrix were ...
Nowadays, the uses of waste materials such as fly ash [10][11][12][13][14], eggshell [17], soda lime silicate glass [15][16][17] and clam shell [15] become an …
In the study, the kinetics of two-step synthesis of wollastonite from CaO and AlF3 production waste, namely, silica gel, its carbonisation process and the mechanical properties of obtained samples ...
The present study deals with a detailed investigation of bioactivity, degradation and antibacterial activity of silver doped wollastonite (CaSiO 3) synthesized using natural waste.Natural waste such as rice husk ash (RHA) and eggshells have been used as precursors for extracting silica (SiO 2) and calcium oxide (CaO) respectively.Silver oxide (AgO) (0, 2, 4 …
husk ash or rice straw ash in wollastonite production reduces the impact of agricultural waste on pollution and prompts the ensuing conversion of waste into a highly beneficial invention. The use of
high-purity wollastonite using abandoned bio-waste, i.e. eggshells and rice husk ash (RHA), by a conventional solid-state route. We also compare the characteristics of β and α-wollastonite. To the best of our knowledge, there has been no such investigation of CaSiO 3 ceramic materials produced with a combi-nation of eggshell and RHA.
Characterization of Wollastonite Glass-ceramics Made from Waste Glass and Coal Fly Ash Author links open overlay panel Soon-Do Yoon 1 Jong-Un Lee 2 Jeong-Hwan Lee 2 Yeon-Hum Yun 2 Wang-Jung Yoon 2 Show more
studies have been reported on wollastonite glass-ceramic made from various of waste such as mixtures of automo-bile waste glass and waste shell, waste glass and coal fly ash, window glass powders and F-type coal fly ash [3,5–7]. The major mineral resources of these wastes are mostly SiO 2, Al 2O
Influence of particle size on sinterability, crystallisation kinetics and flexural strength of wollastonite glass-ceramics from waste glass and fly ash. …
Singh N, Wang J, Li J (2016) Waste cathode ray tube: an assessment of global demand for processing. Procedia Environ Sci 31:465–474. Article Google Scholar Yoon S-D, Lee J-U, Lee J-H, Yun Y-H, Yoon W-J (2013) Characterization of wollastonite glass-ceramics made from waste glass and coal fly ash. J. Mater. Sci.
Wollastonite with cylinder structures has also been prepared using green materials such as rice husk ash as the source for SiO 2 and limestone, as well as the precursor of CaO by the sol–gel method.
A process for converting a waste material ash of a specific composition into a crystallized glass containing at least one phase of anorthite and β-wollastonite crystal phases, said process comprising the steps of : (a) preparing a feed material starting from waste and/or incineration ashes and including optional additives, so as to have a feed ...
Portland cement(OPC) / locust bean waste ash (LBWA) in stepped concentration of 0, 2, 4, 6 and 8% each by dry weight of soil, was used to treat the soil. Compaction was carried out ... Wollastonite used in this study has been collected from Wolkam Chemicals which is …
Lastly, diopside - wollastonite (SiO2-Al2O3-CaO )glass-ceramics from borate wastes, fly ash and soda lime silica glass waste were successfully obtained with controlled rapid sintering between 950 and 1050ºC. The wollastonite and diopside crystal sizes were improved by adopting varied combinations of formulations and heating rates.
Soda ash waste [15] 3. Waste of carbide calcium separation [16] 4. A mixture of Cretaceous rocks (overburden) [17] Silicon-containing waste 5. Aluminum fluoride production waste (silica gel) [8] – [13], [18] 6. Waste from ferroalloy industry (microsilica) [19] – [21] 7. Ash waste from the combustion of brown coal [22] 8. Calx (crashed glass ...
Lee et al. studied the effect of 20% cement replacement by vitrified slag made from fly ash and scrubber ash mix proportioned 1:3, with waste glass frit added to adjust the basicity of the mix. Leaching values of slags were well below the threshold limits, and the compressive strengths of mortars at 56 and 90 days were 5–10% more than those ...
Abstract Wollastonite glass-ceramics were prepared from waste glass and fly ash by using the primary powder sintering. The sinterability, crystallisation kinetics and mechanical property of glass-ceramics have been investigated systematically with respect to the influence of particle size of raw materials. As compared to coarse powders (44 μm), fine powders (6 μm) …
ratio 65/35, CM1) and mass ratio 75/25 (CM2), and paper sludge ash waste (mass ratio 55/45, PS) were melted at 1350-1400oC, quenched in water and ground to 48 mesh. Glass-ceramic samples we< re prepared by re-firing these powders at 950-1100oC. The main crystalline phases formed were wollastonite in
