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This experiment used waste foundry sand and ash as the main raw materials; with only a small amount of pore-forming agent and stabilizer added, porous ceramsite with excellent comprehensive performance was obtained at a lower sintering temperature. When the content of waste sand/ash is 75 wt.% and the sintering …
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The MSWI fly ash (FA) is classified as hazardous waste and electrolytic manganese residue (EMR) as the harmful industrial waste. FA, water-washed FA (WFA), EMR and coal fly ash (CFA) were co-recycled to form lightweight MFCE ceramisites. The effects of FA, WFA and mixed MSWI fly ash on ceramisites w …
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In this paper, sewage sludge-assisted hydrothermal coupled pyrolysis process was applied to achieve detoxification and dechlorination of MSWI fly ash, while the silico-aluminum …
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The sintering procedures for HLWA product (Fig. 1) can be classified into four steps: (1) Pelleting: DS was mechanically ground with varying doses of MSWIFA (0 %, 5 %, 10 %, 20 %, and 30 %) at an appropriate water/ash ratio, and the slurry was pelleted into particles with diameters ranging from 5 to 10 mm using a pelletizer.(2) Drying: The …
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It was noteworthy that the PS fly ash ceramsite produced slight expansion between 850 °C and 1051 °C, followed by initial shrinkage at 1051 °C. When the temperature was <1051 °C, the sintering driving force was insufficient, and there was only a slight expansion caused by the combustion of residual carbon as well as the …
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Preparation, sintering behavior, and expansion performance of ceramsite filter media from dewatered sewage sludge, coal fly ash, and river sediment Li, Tianpeng; Sun, Tingting; Li, Dengxin; Abstract. Publication: Journal of Material Cycles and Waste Management ...
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According to the fly ash sintering ceramsite production system, blocky or mushy added material are dried, milled and sifted to obtain qualified powdery added material, then the fly ash are utilized as a raw material to be batched with the added material, and after the working procedures of batching, nucleation, balling, sintering, cooling ...
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The appropriate performance of the ceramsite could be obtained at a mixture of coal gangue, coal fly ash, and copper slag at a weight ratio of 3:4:1. The optimal sintering …
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Abstract The main aim of this study is to assess the preparation, sintering behavior, and expansion performance of ceramsite filter media (CFM) from dewatered sewage …
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Sintering-free fly ash ceramsite is environmentally friendly porous sound-absorbing material. It can not only maintain the performances of strength, durability, and anticorrosion, but also feature excellent sound-absorption. ... The mixtures of MTs and FA were pelletized using a disk granulator machine by spraying 10 M NaOH with a liquid-to ...
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For example, Shao et al [21] prepared fly ash lightweight aggregate ceramsite with an apparent density of 1.305–1.380 g/cm 3 and single particle compressive strength 13.2–15.2 MPa, Feng et al [22] used tungsten tailings to produce ceramsite with a cylinder compression strength of 9.1 MPa and a water absorption of 0.2 %.
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Step 2. Feed the mixture into a disc granulator to get fly ash pellets. Step 3. The naturally dried fly ash pellets are sent to the rotary kiln for roasting. Step 4. The fly ash ceramsite is cooled by a cooling machine, classified by a screening machine and sent to the fly ash ceramsite storage yard. Mixer Price.
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This study produced red mud-carbide slag-fly ash (RCF) lightweight aggregate ceramsite by disc pelletizer. The effects of the preparation and curing method on the cylinder crush strength, apparent density, bulk density, water absorption, and softening coefficient of RCF ceramsite samples were experimentally investigated.
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Mi et al. [3] studied the possibility of producing high-strength ceramsite using the mixture of fly ash, bentonite and red mud, and the ceramsite with a bulk density of 994 kg/m 3 and compressive ...
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The results show that the optimal parameters for preparation of ultra-lightweight ceramsite are as follows: mass ratio of fly ash:kaolin: diatomite =80:15:5, …
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Preparation of high-strength ceramsite from red mud, fly ash, and bentonite. Ceram. Int., 47 (13) (2021), pp. 18218-18229. View PDF View article View in Scopus Google Scholar [32] ... Co-sintering MSWI fly ash with electrolytic manganese residue and coal fly ash for lightweight ceramisite. Chemosphere, 263 (2021), Article 127914.
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The results indicated that high-strength ceramsite with a classified density of 900~1 200 level could be successfully prepared by firing the green pellets for 20 min at the temperature of 1 200~1 250 ℃ and the optimal compressive strength was up to 19 MPa. ... WANG L, et al. Co-sintering MSWI fly ash with electrolytic manganese residue and ...
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The optimal ratio of solid residue to fly ash was demonstrated to be 6:4 with an additional 15% of clay supplementing the raw ceramsite materials. Furthermore, the optimal sintering process was established as preheating at 300 °C for 25 min followed by sintering at 1085 °C for 10 min, as determined through an L16 (4 4 ) Orthogonal test.
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Co-utilization of iron ore tailings and coal fly ash for porous ceramsite preparation: Optimization, mechanism, and assessment J Environ Manage. ... (IOTs content at 76%, preheating at 550 °C for 15 min, and sintering at 1177 °C for 14 min), while maintaining good mechanical properties (water adsorption of 1.28%, comprehensive …
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The ceramsite formation process of CFB fly ash is essentially a high-temperature sintering process. The shrinkage and expansion of raw ceramic pellets …
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The results showed that the single ceramsite compressive strength, water absorption, bulk density, and porosity of ceramsite sintered at 1180 °C with 1.0% SiC were 2.15 MPa, 2.02%, 490 kg/m3, and ...
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The optimum MSWI fly ash content and sintering conditions were investigated, and the immobilization mechanisms of heavy metals were explored. Based on the obtained results, the optimum preparation conditions were a preheating temperature of 400 °C, a preheating time of 10 min, a sintering temperature of 1150 °C, and a …
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High-strength ceramsite was prepared from red mud, fly ash, and bentonite without any other chemical additives by a two-stage sintering process. In addition, the raw material weight ratio, and ...
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Using dehydrated silt soil as a raw material to produce ceramsite for ceramsite concrete blocks is a promising approach from both environmental and economic aspects. In this paper, flocculant polyacrylamide (PAM) was investigated to dehydrate the silt, and the optimal dosage of PAM was found to be 0.8 mol/L. The dehydrated silt was …
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FEECO provides custom, high-quality agglomeration and bulk material handling equipment for de-dusting fly ash and turning it into a more marketable product. Our process …
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Fly ash is the fine gray powder consisting mostly of spherical, glassy particles that are produced during coal combustion. It is the main solid waste discharged …
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Green and low-carbon materialization for dredged sediment (DS) is limited due to its low pozzolanic activity. In this study, a novel DS-based non-sintered lightweight aggregate (LWA) is developed by steel slag (SS) and fly ash (FA) activation. Process optimization is performed by the response surfaces, and the basic properties and …
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The non-sintering method. Herein, ceramsite-producing methods other than sintering are defined as non-sintering methods (Fig. 1). In this method, the main ingredients for raw material preparation are commonly clay and solid wastes (e.g., fly ash and sewage sludge).
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The model parameters were presented in Table S4 for fly ash and ceramsite. 2.6. Biological toxicity test. The zebrafish embryos were exposed to the leaching solutions of fly ash and ceramsite, and then assessed for toxicity. The leaching solutions were prepared through mixing fly ash or ceramsite and deionized water with a solid …
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2.1. Shell Structure Ceramsite. In this paper, a shell structure ceramsite has been prepared and researched; its structure is a hollow ceramsite, as shown in Figure 1.This structure provides good mechanical properties from a compact shell, and greatly reduces density by being hollow; with this special structure, it can be applied in many …
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Abstract. Lightweight sludge ceramsite was manufactured using dewatered sludge from municipal sewage treatment plants as the main raw material, complemented by fly ash and clay ingredients. The results indicate that the sintering temperature on the ceramsite's performance impacts the most. Sludge ratio has certain influence on the …
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The invention discloses a clean and environment-friendly fly ash sintered ceramsite production system comprising an adding material prefabrication system, a ceramsite production system and a ceramsite sintering and cooling exhaust gas treatment system; the adding material prefabrication system comprises a combustion furnace draught fan, …
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The disposal of dredged sediment (DS) and municipal solid waste incineration fly ash (MSWIFA) has become a notable concern. In this study, a novel ceramsite high-strength lightweight aggregate (HLWA) was developed by the co-sintering of DS and MSWIFA.The optimal HLWA (DS-10FA-1160) was synthesized using a …
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The high strength composite ceramsite was prepared by using fly ash and waste glass as main raw materials and some admixtures such as binder and bubble-forming agent. The suitable technological condition of preparing high strength composite ceramsite was given by studying the influence of the different mix proportions and different …
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The optimal dosing of lithium slag was 40% and the ratio of lithium slag, fly ash, kaolinite and albite was 40: 40: 10: 10. Sintering temperature had a great influence on the performance of ceramsite, and the best sintering condition for this experiment was 1240 °C for 20 min.. Anorthite and mullite crystalline phases were formed during the …
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DOI: 10.2991/IFEME-19.2019.50 Corpus ID: 149747112; Sintering-free fly ash ceramsite prepared with ammonium carbonate as ing agent and its properties @article{Gao2019SinteringfreeFA, title={Sintering-free fly ash ceramsite prepared with ammonium carbonate as ing agent and its properties}, author={Shuyan Gao and …
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