Calcium carbonate synthesis from Kambara reactor desulphurization slag via indirect carbonation for CO2 capture and utilization ScienceDirect Journal of Environmental Management Volume 351, February 2024, Research articleBased on composition characteristics of carbide slag and application of polyvinyl chloride, a method of preparing calcium carbonate with micro and nano structure by using carbidePreparation of calcium carbonate with microstructure and
2022年12月15日· The desulfurization characteristics of calcium carbonate at varied temperature and CO 2 pressure has been studied and compared Scanning electronIn this work, industrial Kambara reactor desulphurization slag (KR slag) was indirectly carbonated The effects of leaching time, leaching temperature, leaching agent types,Calcium carbonate synthesis from Kambara reactor
The test results show that carbide slag and limestone have almost the same desulfurization efect The kinetics of carbide slag desulfurization process conforms to2022年7月14日· Characteristics of calcium carbide slag desulfurization gypsum The composition of CS and limestone slurry before and after desulfurization is shown inDesulphurization mechanism and engineering practice of carbide
In this work, industrial Kambara reactor desulphurization slag (KR slag) was indirectly carbonated The effects of leaching time, leaching temperature, leaching agent types,2022年1月21日· In purpose of the gradual decrease of calcium carbonate resources and reduction of carbon emissions in wet flue gas desulfurization process, the utilizationHigh efficiency desulfurization behavior by the sustainable low
2022年7月14日· The kinetics of carbide slag desulfurization process conforms to pseudofirstorder kinetics, and the sulfur content of calcium carbide slag reaches to 1000 mgSO2·g1 A project2018年2月1日· After adding 3g of humic acid, the desulfurization efficiency was improved obviously, and the instantaneous efficiency of 100% lasting for about 40 minutes It canImproving the desulfurization performance of CaCO IOPscience
2022年6月9日· Steel slag is a calciumcontaining alkaline industrial solid waste that can replace limestone for flue gas desulfurization It can remove SO2 and coproduce silica gel while avoiding CO2 emission from limestone in the desulfurization process In this study, steel slag with a D50 of 315 μm was used to remove SO2 At room temperature, with a2023年2月1日· Based on salt effect and the solubility equilibrium theory of insoluble electrolyte, the technological process of ammoniaenhanced desulfurization gypsum carbonation for CO 2 sequestration in NH 4 ClH 2 O system was studied, and calcium carbonate with different crystal phase and morphology was prepared in this paper TheDesulfurization gypsum carbonation for CO2 sequestration by
2022年7月14日· Carbide slag is a wet powder sample from Zhenyuan ASUS Precious Metals Development Co, Ltd The calcium carbide slag was dried, ground, passed through a 200mesh sieve, and placed in a threenecked flask, and a certain amount of water was added at the set solidtoliquid ratio to carry out a desulfurization experiment at room2023年2月11日· Calciumbased desulfurization ash (CDA) is mainly produced in dry and semidry flue gas desulfurization processes The property of CDA is extremely unstable because its main component, calcium sulfite, makes it difficult to be directly applied to the field of building materials The modification of desulfurization ash can be realized byResource utilization of flue gas calciumbased desulfurization
2022年5月1日· Coal is the dominant fuel in China to provide primary energy, and 70% of polyvinyl chloride is produced from coalbased CaC 2CaC 2 reacts with water to produce acetylene and calcium carbide slag (CCS) as a solid waste for polyvinyl chloride production Approximate 40 million tons of dry CCS are generated annually in China,Before flue gas desulfurization was installed, the emissions from the Four Corners Generating Station in New Mexico contained a significant amount of sulfur dioxide The G G Allen Steam Station scrubber (North Carolina) Fluegas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossilFluegas desulfurization
2022年3月1日· The carbide slag (generated from a PVC factory) and limestone (used in a coalfired power plant) were used as two kinds of desulfurizer, whose compositions are shown in Table 1It illustrates that calcium resources are abundant in carbide slag, which also contains a small number of impurities such as SiO 2 and Al 2 O 3The main2014年1月1日· Eloneva (5) performed calcium extraction experiments with blast furnace slag, desulfurization slag, ladle slag, and steel converter slag, as mentioned earlier From blast furnace slag and ladle slag at maximum, 20% of the calcium was extracted with various solvents, while from desulfurization and steel converter slags over 50%Production of Precipitated Calcium Carbonate from Steel Converter Slag
2015年9月9日· The desulfurization waste slag from hot metal pretreatment process is a typical solid waste generated in the integrated steel company About 7 to 9kg waste slag is produced per ton hot metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron2014年2月1日· Introduction FGD (flue gas desulfurization) gypsum (calcium sulfate dihydrate, CaSO 4 ·2H 2 O) is the main product of desulfurization system for the removal of SO x at fossilfuel power plants One of the well known application of waste gypsum is the production of the fertilizer ammonium sulfate ((NH 4) 2 SO 4) [1], [2], [3]: CaSO 4 ⋅ 2 H 2Factors affecting the precipitation of pure calcium carbonate
2021年1月29日· Ladle furnace (LF) slag is a type of steel slag, which has limited applications due to its high S content Aqueous carbonation is a prospective method for desulfurization of the LF slag However, the Alrich LF raw slag has very low desulfurization efficiency with carbonation method This study investigated theThe development of sorbents for flue gas desulfurization in a dry mode is essential to control emission of sulfur dioxide Based on the novel concept of “treating waste with waste”, a lowcost and highly activated calciumbased sorbent (ACS) was prepared using coal fly ash, CaO and waste gypsum as the raw materials via the onestep incipient wetnessAn efficient calciumbased sorbent for flue gas drydesulfurization
Mineral carbonation, which involves spontaneous reactions of CO2 with alkaline earth metals such as calcium or magnesium, is considered one of the most attractive options to sequester CO2 because CO2 can be permanently stored in an inert solid forming stable inorganic carbonate Moreover, the precipitated CaCO3 has various potential2022年1月1日· CaCO 3 is present in nature in the forms of chalk, limestone, marble, and it is produced by the sedimentation of the shells of small fossilized snails, shellfish and coral CaCO 3 exists in three different crystalline forms, which are, in the order of stability, calcite, aragonite and vaterite [1]These crystalline phases of calcium carbonate have differentFactors controlling and influencing polymorphism, morphology and size
2020年1月1日· We proposed a technology of preparation light calcium carbonate with PG desulfurization slag, which mainly contains two steps: leaching and carbonizing In this work, we concentrated on the former, in which ammonium chloride aqueous solution was utilized as leaching agent to extract calcium from the slag, and conducted2020年8月1日· Desulfurization gypsum was also used as soil conditioner for saline soil improvement [9,10] Calcium carbonate materials were prepared using the calcium component of desulfurization gypsum [11,12] At present, the key problem of industrial application of desulfurization gypsum is to increase its added value while achieving bulkCalcium sulfate whisker prepared by flue gas desulfurization
2022年1月15日· Infurnace calcium injection desulfurization technology sends limestone powder or lime powder gas into the furnace Under high temperature conditions, calcium carbonate decomposes to form CaO, and the generated CaO reacts with SO 2 to form calcium sulfate This method has the characteristics of a low investment, low operating2022年12月15日· Because of its high heating rate (10 4 –10 5 °C/s) and good heat transfer performance, drop tube furnaces are commonly used to study the infurnace gassolid phase reaction during actual combustion process A pressurized drop tube furnace (PDTF) system was constructed in this study to investigate the calcination and desulfurizationCalcination and desulfurization characteristics of calcium carbonate
2012年11月1日· Thus, this study was designed to investigate the technical feasibility of sequestering CO 2 through the formation of calcium carbonate via mineral carbonation of FGD gypsum The reaction for the mineral carbonation of FGD gypsum is as follows: CaSO 4 · 2 H 2 O ( s) + CO 2 ( g) + 2 NH 4 OH ( l) → CaCO 3 ( s) + ( NH 4) 2 SO 4 ( aq) In the2018年1月15日· The purpose of this study was to reuse desulfurization (DeS) slag in the production of autoclaved aerated concrete (AAC) The nonmagnetic fraction of DeS slag is rich in calcium and silicon compounds, and therefore suitable to be an alternative raw material for AAC production The calcium compounds in the DeS slag used in thisRecycling of desulfurization slag for the production of autoclaved
2021年2月26日· Carbon mineralization is a versatile and thermodynamically downhill process that can be harnessed for capturing, storing, and utilizing CO2 to synthesize products with enhanced properties Here2021年2月1日· Teir et al Teir et al (2016) produced calcium carbonate from carbon dioxide in flue gases and SS In the study, the first step was extracting calcium from the slag using ammonium chloride as the solvent Then, the extracted calcium reacted with CO 2 in flue gas and precipitated as CaCO 3 The process would remove 03 t CO 2 per tonsSynergistic mechanisms of steelmaking slag coupled with carbide slag
2022年5月1日· Coal is the dominant fuel in China to provide primary energy, and 70% of polyvinyl chloride is produced from coalbased CaC 2CaC 2 reacts with water to produce acetylene and calcium carbide slag (CCS) as a solid waste for polyvinyl chloride production Approximate 40 million tons of dry CCS are generated annually in China,2022年5月1日· In the present route, the total CO2 sequestration capacity per tonne of blast furnace slag reached up to 316 kg, and 313 kg of Alrich precipitate, 1000 kg of carbonated product containing CaCO3Preparation of calcium carbonate nanoparticles from waste carbide slag
2023年11月1日· In contrast to the CS, the peak intensity of Ca(OH) 2 is slightly reduced in the KCS, and calcium carbonate (CaCO 3) phase also appears Synergetic utilization of microwaveassisted fly ash and carbide slag for simultaneous desulfurization and denitrification: high efficiency, low cost and catalytic mechanism Chem Eng J, 年12月1日· Production of precipitated calcium carbonate (PCC) from steelmaking slag for fixation of CO2 Appl Energy, 112 (2013), pp 765771, 101016/japenergy201212042 Leaching calcium from phosphogypsum desulfurization slag by using ammonium chloride solution: thermodynamics andCalcium recovery from waste carbide slag via ammonium
2018年1月15日· The purpose of this study was to reuse desulfurization (DeS) slag in the production of autoclaved aerated concrete (AAC) The nonmagnetic fraction of DeS slag is rich in calcium and silicon compounds, and therefore suitable to be an alternative raw material for AAC production The calcium compounds in the DeS slag used in this2012年12月1日· 1 Introduction Flue gas desulfurization (FGD) gypsum is the main product of the desulfurization system used to remove SO x from coal combustion products One established utilization of waste gypsum has been the production of the fertilizer ammonium sulfate [1], [2], [3]At the same time, calcium carbonate is produced as aPrecipitation of calcium carbonate during direct aqueous carbonation
DOI: 101016/jjclepro2022 Corpus ID: ; Preparation of calcium carbonate nanoparticles from waste carbide slag based on CO2 mineralization @article{Li2022PreparationOC, title={Preparation of calcium carbonate nanoparticles from waste carbide slag based on CO2 mineralization}, author={Wenxiu Li and Yan HuangHowever, the carbonates decomposition is endothermic, which it reduces the bath temperature, disfavoring the desulfurization reaction 12 12 Aguiar FN, Grillo FF, Tenório JAS, Oliveira JR Hot metal desulfurization byDevelopment of Synthetic Slag with Marble Waste
2015年10月1日· In fact, the high composition of calcium sulfate dihydrate, > 95 w/w% in most of the cases (Wang et al 2009;Song et al 2014 Song et al , 2015, makes flue gas desulfurization gypsum waste aLeaching calcium from phosphogypsum desulfurization slag Jan 01, 2020 · Phosphogypsum (PG) desulfurization slag is a calciumrich residue from reductive decomposition of PG using sulfur as the reductant We proposed a technology of preparation light calcium carbonate with PG desulfurization slag, which mainly contains two Getcalcium carbonate slag desulfurization
2014年2月1日· @article{Song2014FactorsAT, title={Factors affecting the precipitation of pure calcium carbonate during the direct aqueous carbonation of flue gas desulfurization gypsum}, author={Kyungsun Song and Young nam Jang and Wonbaek Kim and MyungGyu Lee and Dongbok Shin and JunHwan Bang and Chi Wan Jeon and SC Chae},2015年10月15日· We previously developed a process for the precipitation of pure CaCO 3 by exploiting the induction period of onestep mineral carbonation of flue gas desulfurization gypsum Herein, the process was further investigated to elucidate CaCO 3 polymorphism as a function of the addition of ammonia and ethanol using quantitative XPolymorphs of pure calcium carbonate prepared by the mineral
2022年12月1日· In this paper, we systematically researched the influences of critical process parameters on the calcium leaching from waste carbide slag The results show that nearly 90% of calcium in WCS was converted into CaSO 4 ·2H 2 O in about 15 min at condition of 40 °C, 20 mol/L (NH 4) 2 SO 4, and S/L ratio of 105% Furthermore, the2017年10月1日· 7 Development of Synthetic Slag with Marble Waste and Calcium Aluminate Agents for Cast Iron Desulfurization to the interface hot metalslag, the presence of solid MgO acts by retarding the process(PDF) Development of Synthetic Slag with Marble Waste and Calcium
2022年1月21日· In purpose of the gradual decrease of calcium carbonate resources and reduction of carbon emissions in wet flue gas desulfurization process, the utilization process of carbide slag to replaceImprovement of dry desulfurization performance using activated calcium WebJan 1, 2020 Sulfur dioxide (SO2) in combustion exhaust gas from mediumscale facilities must be removed because it pollutes the air In this study, dryDeSOx filters, particularly calcium carbonate, that used simple desulfurization materials to capture SO2 is focused oncalcium carbonate slag desulfurization Heatcon Mining
