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carbonate slag desulfurization

Improvement of desulfurization efficiency of Al-rich ladle ...

Jan 29, 2021  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

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Leaching calcium from phosphogypsum desulfurization slag ...

Jan 01, 2020  Phosphogypsum (PG) desulfurization slag is a calcium-rich residue from reductive decomposition of PG using sulfur as the reductant. We proposed a technology of

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Towards sustainable bricks made with fiber-reinforced ...

Jan 30, 2020  Desulfurization slag (DS) is a by-product of the steelmaking industry. Desulfurization’s reagents can be divided into four categories: 1) soda ash, 2) calcium

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Carboxymethylation of cinnamylalcohol with dimethyl ...

Jul 10, 2021  The carboxymethylation of cinnamylalcohol with dimethyl carbonate was performed using low-cost catalysts obtained from desulfurization slag. Processing of steel

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(PDF) Carboxymethylation of cinnamylalcohol with dimethyl ...

Jul 09, 2021  The carboxymethylation of cinnamylalcohol with dimethyl carbonate was performed using low-cost catalysts obtained from desulfurization slag. Processing of steel

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Reagents for Desulphurization of Hot Metal – IspatGuru

Aug 19, 2018  The decomposition of the carbonate in contact with the hot metal produces pungent sodium oxide fumes which are harmful to the human health. Further, sodium carbonate

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The Indirect Mineral Carbonation of Electric Arc Furnace ...

May 22, 2019  Calcium extraction from steelmaking slag and production of precipitated calcium carbonate from calcium oxide for carbon dioxide fixation. J Ind Eng Chem. 53

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Reaction Kinetics of Desulfurization of Molten Pig Iron ...

May 24, 2021  Desulfurization kinetics of molten pig iron were studied using CaO-SiO2-Al2O3-Na2O quaternary slag systems at 1 350 degreesC. The concentration of Na2O in slag

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Carboxymethylation of cinnamylalcohol with dimethyl ...

Aug 01, 2021  The carboxymethylation of cinnamylalcohol with dimethyl carbonate was performed using low-cost catalysts obtained from desulfurization slag. Processing of steel

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US4315773A - Desulfurization mixture and process for ...

Process and composition for desulfurizing pig iron in which the desulfurization agent consists essentially of calcium carbide, a gas-evolving component and fluorspar;

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Improvement of desulfurization efficiency of Al-rich ladle ...

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 Al-rich LF raw slag has very low desulfurization efficiency with carbonation method. This study inve

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Improvement of desulfurization efficiency of Al-rich ladle ...

Improvement of desulfurization efficiency of Al-rich ladle furnace refining slag with an aqueous carbonation method by hydrothermal or ultrasound pretreatment Author: Huang, Yi, Zeng, Zhiqiang Source: Environmental science and pollution research 2021

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Leaching calcium from phosphogypsum desulfurization slag ...

Phosphogypsum (PG) desulfurization slag is a calcium-rich 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 steps: leaching and carbonizing.

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Desulfurization and Denitrification Performance of ...

Dec 25, 2020  Carbide slag is a strong alkaline slurry with a fine particle size (particles of 10–50 m account for about 80%), and its properties are similar to those of slaked lime milk, with a pH of over 12 [18]. As carbide slag is rich in CaO, the combination of carbide slag and rice husk ash may play a synergistic role in desulfurization

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Carboxymethylation of cinnamylalcohol with dimethyl ...

The carboxymethylation of cinnamylalcohol with dimethyl carbonate was performed using low-cost catalysts obtained from desulfurization slag. Processing of steel slag performed by different techniques was resulted in a wide range of the catalysts with different morphological and structural properties.

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MINING AND PROCESSING BY-PRODUCT RESOURCES IN

CARBONATE PRECIPITATE carbonate paste. Some of these by-prod- 6. MAGNETITE ... FLUE GAS DESULFURIZATION (FGD) Flue gas desulfhization FGD) is a scrubber system, where finely ... boiler slag and FGD material. The total of fly ash (dry and

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An Attempt to Correlate Electrochemical Desulfurization of ...

Aug 13, 2021  Desulfurization of molten iron by molten slag is an electrochemical reaction. Previous investigations confirmed that applying electricity could enhance the desulfurization of molten iron, but a quantitative relation between the electricity and the desulfurization was not fully elucidated. The present study attempted to correlate the extent of the electrochemical desulfurization with the ...

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Producing ammonium sulfate from flue gas desulfurization ...

Emission control technologies using flue gas desulfurization (FGD) have been widely adopted by utilities burning high-sulfur fuels. However, these technologies require additional equipment, greater operating expenses, and increased costs for landfill disposal of the solid by-products produced. The financial burdens would be reduced if successful high-volume commercial applications of the FGD ...

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Research progress on preparation of calcium carbonate with ...

Abstract: Preparation of calcium carbonate can achieve high value-added utilization of carbide slag,which is important to the sustainable development of chemical engineering of carbide. Preparation method,especially the process of leaching and carbonation were introduced. The progress in producing calcium carbonate with carbide slag as well as its surface modification and crystal controlling ...

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Flue-gas desulfurization - Wikipedia

A new, emerging flue gas desulfurization technology has been described by the IAEA. It is a radiation technology where an intense beam of electrons is fired into the flue gas at the same time as ammonia is added to the gas. The Chendu power plant in China started up such a flue gas desulfurization unit on a 100 MW scale in 1998.

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Reaction Kinetics of Desulfurization of Molten Pig Iron ...

May 24, 2021  Desulfurization kinetics of molten pig iron were studied using CaO-SiO2-Al2O3-Na2O quaternary slag systems at 1 350 degreesC. The concentration of Na2O in slag

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(PDF) Flue Gas Desulfurization by Mechanically and ...

The thermal activation was conducted at. 300°C for 30 minutes, to complete decomposition of. sodium bicarbonate to sodium carbonate. The evaluation. of the structure and texture of grains surface ...

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12.5 Iron And Steel Production

12.5.1.3 Iron Preparation Hot Metal Desulfurization - Sulfur in the molten iron is sometimes reduced before charging into the steelmaking furnace by adding reagents. The reaction forms a floating slag which can be skimmed off. Desulfurization may be performed in the hot metal transfer (torpedo) car at a location between the blast furnace and

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US3598573A - Desulfurization agent and process - Google ...

US3598573A US3598573DA US3598573A US 3598573 A US3598573 A US 3598573A US 3598573D A US3598573D A US 3598573DA US 3598573 A US3598573 A US 3598573A Authority US United States Prior art keywords desulfurization precipitated weight calcium calcium carbonate Prior art date 1968-04-29 Legal status (The legal status is an assumption and is not a legal conclusion.

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AUTOCLAVED DESULFURIZATION SLAG BRICKS - AN

desulfurization slag’s and basic oxygen furnace slag’s usability in construction purposes. The work was carried out in the fiber and particle engineering laboratory at ... thermal decomposition of calcium carbonate to lime and carbon dioxide. The rest is produced by the use of energy, especially from the combustion of fossil fuels (Nisbet et

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Molten carbonate fuel cell powerplant desulfurization ...

@article{osti_5133848, title = {Molten carbonate fuel cell powerplant desulfurization systems. Final report, November 1978-November 1979}, author = {Jalan, V and Wu, D}, abstractNote = {With an objective to contribute to the integration of coal gasifier with advanced power generation systems, such as molten carbonate fuel cells, this study has investigated high-temperature, regenerable ...

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SciELO - Brasil - Development of Synthetic Slag with ...

Despite the fact that carbonate decomposition content no marble waste (Table 3) improved the desulfurization by playing an important role on the sulfur transfer mechanism to the interface hot metal-slag, the presence of solid MgO acts by retarding the process.

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Desulfurization Ability of Blast Furnace Slag Containing ...

In recent years, with the extensive use of high alumina iron ore, the content of Al 2 O 3 in slag has increased greatly, which inevitably affects the metallurgical properties of blast furnace slag [1,2,3,4,5,6,7,8,9,10].Among these metallurgical properties, the desulfurization ability of blast furnace slag plays an important role in the quality of hot metal.

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MINING AND PROCESSING BY-PRODUCT RESOURCES IN

CARBONATE PRECIPITATE carbonate paste. Some of these by-prod- 6. MAGNETITE ... FLUE GAS DESULFURIZATION (FGD) Flue gas desulfhization FGD) is a scrubber system, where finely ... boiler slag and FGD material. The total of fly ash (dry and

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Control of Carbide Levels in Desulfurization of Grey Iron ...

DOI link for Control of Carbide Levels in Desulfurization of Grey Iron so Slag Will be Non-Hazardous By James E. Etzel, William Kodatsky, Joseph B. Medved Book Proceedings of the 43rd Industrial Waste Conference May 10, 11, 12, 1988

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Desulfurization kinetics of high lead and zinc sulfide ...

transformation of the desulfurization slag were investigated. The thermodynamic results indicated that lead, zinc, and iron can be oxidized to form high lead and zinc slag. The experimental results illustrated that the sulfur content in the oxidation slag can be reduced to

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POLYMETALLIC VEIN AND REPLACEMENT DEPOSITS (MODELS

(4) Slag produced by smelting may contain elevated abundances of lead, zinc, and copper, and lesser amounts of other metals; the mobility of metals from slag varies as a function of how slag cooled. (5) Soil downwind from smelters can contain elevated abundances of Pb, Zn, Cu, As, Sb, Mo, Hg, and Au.

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Desulfurization Article about Desulfurization by The ...

Desulfurization. a combination of physicochemical processes that promote the removal of sulfur from molten metal (cast iron, steel). It consists in converting the sulfur dissolved in the metal to sulfides that are either insoluble or poorly soluble in the liquid metal bath (for example, MnS, MgS , CaS, and Na 2S).

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Construction Material,Slag Cement

Seiko production, "intelligence" makes the future. In-depth practice of "Made in China 2025", Shibang Group took the lead in completing the upgrade of the mining industry "smart", introducing advanced large-scale CNC machining lathes, FAST CAM automatic typesetting and batching equipment, automatic hydraulic punching and bending equipment.

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Improving the desulfurization performance of CaCO3 with ...

Mar 15, 2018  After adding 3g of humic acid, the desulfurization efficiency was improved obviously, and the instantaneous efficiency of 100% lasting for about 40 minutes. It can be seen that, calcium carbonate in the addition of humic acid sodium can significantly improve the absorption of calcium carbonate performance of SO 2.

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Desulfurization Ability of Blast Furnace Slag Containing ...

Desulfurization Ability of Blast Furnace Slag Containing High Al2O3 at 1773 K Yongchun Guo, Fengman Shen, Haiyan Zheng, Shuo Wang, Xin Jiang, Qiangjian Gao; Affiliations Yongchun Guo School of Metallurgy, Northeastern University, Shenyang 110819, China ...

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Ultrasound irradiation as an effective tool in synthesis ...

abstract = "Waste minimization strategy was applied in the current work for synthesis of the catalysts from industrial solid waste, namely desulfurization slag. The starting slag material comprising CaCO3, Ca(OH)2, SiO2, Al2O3, Fe2O3, and TiO2 was processed by various treating agents systematically varying the synthesis parameters.

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Geological Sequestration of CO2 by Hydrous Carbonate ...

Feb 06, 2008  @article{osti_928561, title = {Geological Sequestration of CO2 by Hydrous Carbonate Formation with Reclaimed Slag}, author = {Richards, Von L and Peaslee, Kent and Smith, Jeffrey}, abstractNote = {The concept of this project is to develop a process that improves the kinetics of the hydrous carbonate formation reaction enabling steelmakers to directly remove CO2 from their

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