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The attrition behavior of a dolomite during fluidized-bed calcination and sulfation was investigated in a bench-scale apparatus. Operating conditions of the bed were those typical of atmospheric bubbling fluidized-bed combustion. Batchwise experiments were carried out in order to study the influence of the chemical reactions on the parallel …
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The present work reports an in situ XRD analysis on the calcination of natural dolomite under a pure CO 2 atmosphere. The main goal is to provide an insight on how calcination kinetics and the crystal structure of the calcination byproducts are affected by the addition of H 2 O to the calciner at a very low concentration. The working …
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Corresponding author: [email protected] Performance of Dolomite Calcination in a Bench-Scale Rotary Kiln Winny Wulandari*,1, Subagjo1, Anggoro Tri Mursito2, Fadly Junico Juanjaya1, and Muhammad Faqih Alwi1 1 Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Jalan Ganesa 0 Bandung
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The modified dolomite is proved as a new and promising type of regenerable CO2 sorbent for industrial applications. Discover the world's research 25+ million members
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The reactions for dolomite thermal decomposition and H 2 O-enhanced calcination may be summarized as depicted in Fig. 1 [29, 32, 34].Dolomite might experience the initial formation of a face-centered cubic mixed oxide (Ca 0.5 Mg 0.5 O), before the de-mixing of a metastable (Ca, Mg)O precursor into oriented crystals of CaO …
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A new CO 2 capture technology called Direct Separation can directly capture the CO 2 generated in the calcination process of limestone (Hills et al., 2017). Direct separation technology may reduce the CO 2 emissions of lime production plants by up to about 60%, and it may be reduced by about 85% when combined with alternative …
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The attrition behavior of a dolomite during fluidized-bed calcination and sulfation was investigated in a bench-scale apparatus. Operating conditions of the bed were those typical of atmospheric ...
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Calcium looping is an emerging technology for CO2 capture that makes use of the calcium oxide as a sorbent. One of its main issues is the significant energy …
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Furthermore, the solar calcination of dolomite was efficacious for obtaining a high degree of decarbonation, as inferred from the value of loss on ignition for solar CD in Table 2 (which is non ...
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Semantic Scholar extracted view of "The steam-assisted calcination of limestone and dolomite for energy savings and to foster solar calcination processes" by Yimin Deng et al. ... A thermochemical energy storage materials review based on solid-gas reactions for supercritical CO2 solar tower power plant with a Brayton cycle ... Fluidized …
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The attrition behavior of a dolomite during fluidized-bed calcination and sulfation was investigated in a bench-scale apparatus. ... distribution and fines elutriation rates were followed throughout conversion during both sequential and simultaneous calcination and sulfation. ... Articles with the Crossref icon will open in a new tab. …
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PDF | On Aug 1, 2019, Mehmet Buğdayci and others published Magnesium Production from Calcined Dolomite via the Pidgeon Process | Find, read and cite all the research you need on ResearchGate
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The calcination of the dolomite stone (CaMg(CO 3) 2) for the production of sintered dolomite (CaO and MgO), is a high-temperature energy-intensive process …
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U.S. Department of Energy Office of Scientific and Technical Information. Search terms: Advanced search options. ...
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The fundamental mechanism that drives the crystallographic transformation of dolomite in the presence of CO2 is thus responsible for its fast calcination kinetics and the high carbonation reactivity ofdolomitic CaO, which makes natural dolmite a potentially advantageous alternative to limestone for CO2 capture in the CaL technology as well …
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Calcination at 1200 °C for 0.5 h results in a decreased surface area (10.9 m 2 g −1 for a 2–5 mm feed precalcination). Calcination yields MgO and a high-purity stream of CO 2. The calciner is ...
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The main compounds observed in hardened phosphate binders based on calcined dolomite were calcium and magnesium hydroxides; in the case of specimens with a lower dosage of MKP (corresponding to D 14 /MKP = 4 weight ratio)—along with Ca(OH) 2 and Mg(OH) 2, a new compound was detected by XRD—hydroxyapatite (HAp); HAp …
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The aim of this study is to assess the possibility of obtaining phosphate cements based on dolomite calcined at various temperatures with/without quartz sand addition. A lower calcination temperature of dolomite (1200 °C) determines a high increase in the system temperature when calcined dolomite is mixed with KH2PO4 …
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Exporter of Rotary Kiln Calcination Plant - Dolomite Calcination Plant, Calcined Bauxite Rotary Kiln offered by Kinc Mineral Technologies Private Limited, Vadodara, Gujarat. ... with two cyclone separators and allied accessories. Made by using high grade raw materials, these are produced in our latest technology laden production unit. Our ...
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DOI: 10.1016/J.CEJ.2014.09.076 Corpus ID: 96263105; Increasing CO2 carrying capacity of dolomite by means of thermal stabilization by triggered calcination @article{Herce2015IncreasingCC, title={Increasing CO2 carrying capacity of dolomite by means of thermal stabilization by triggered calcination}, author={Carlos Herce and …
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As the increase of the productivity of the magnesium,the technology of the magnesium has been improved.During the recent years,the cost of material and the cost of energy per output has been reduced.The progress of technology are always associated with the appearance of new equipment.This article introduces two important kilns during the …
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Abstract. Despite extensive research, our understanding of the dolomite calcination mechanism remains unclear, especially concerning how dolomite calcination is influenced by a change in H 2 O and CO 2 partial pressure under high-pressure conditions. In this study, dolomite calcination behaviors and mechanisms at different H 2 O and CO 2 …
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Dolomite, a calcium magnesium mineral (CaMg(CO3)2), is considered an undesirable accompanying mineral in the phosphoric acid production process and, as such, large quantities of this mineral are available in Florida. This study is aimed toward the characterization of the high-concentration phosphatic dolomite pebbles (handpicked …
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The proposed thermal treatment successfully increased the P2O5 content of the untreated phosphate rock from 20.01 wt% (group 1) to 24.24 wt% (group 2) after calcination and, finally, 27.24 wt ...
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This paper reports a study on thermal decomposition of dolomite under CO 2-air.Calcination was carried out non-isothermally by using thermogravimetry analysis-differential scanning calorimetry (TGA-DSC) with a heating rate of 10°C/minute in an air atmosphere as well as 10 vol% CO 2 and 90 vol% air atmosphere from 25 to 950°C. In …
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Calcination creates a porous surface on the dolomite, making calcined dolomite more favorable for liquid NaNO 3-KNO 3 than RawDo. 700Do, 750Do and …
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Calcium looping is an emerging technology for CO2 capture that makes use of the calcium oxide as a sorbent. One of its main issues is the significant energy consumption in the calciner, where the regeneration of the sorbent takes place. Nevertheless, as a high temperature looping technology, the surplus heat flows may …
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Furthermore, the solar calcination of dolomite was efficacious for obtaining a high degree of decarbonation, as inferred from the value of loss on ignition for solar CD in Table 2 (which is non ...
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The calcination of the dolomite is highly endothermic reaction, requiring significant amount of thermal energy to produce sintered dolomite (CaO MgO), …
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The calcination of dolomite took place in a two-steps-process at high partial pressure of CO 2, in which CaMg(CO 3) 2 was first decomposed to MgO and CaCO 3 in the temperature range of 780‒800 °C, and then the decom-position of CaCO 3 to CaO carried out at 880‒900 °C. On the other hand, the calcination of dolomite occurred in one
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