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Deep processing and reuse of coal slag
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أكثر من 30 نوعًا من المنتجات تغطي التعدين وسحق البناء والطحن الصناعي ومواد البناء الخضراء وغيرها من المجالات
Deep processing and reuse of coal slag
A review of sustainable utilization and prospect of coal gasification
2023/12/1 As the leading industry of coal chemical industry, Coal gasification plays an
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Acid-Alkali Deep Deashing and Alkali Activation of
Nowadays, coal gasification fine slag (CGFS) generated during the coal gasification process has become difficult to treat bulk solid waste. CGFS contains high levels of residual carbon, which is difficult to recycle due to the tight
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Efficient separation of coal gasification fine slag from Texaco ...
2024/4/19 Coal gasification fine slag (CGFS) is one of the by-products of coal
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Slag recycling and reuse – GREENY approach - Metso
2021/1/12 The reuse of slag should be organized at the site where the slag is stored, as any transport costs will increase the processing costs significantly. From the environmental point of view, the landfilling of slags is a significant
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Multiscale analysis of fine slag from pulverized coal gasification in ...
2024/2/3 Fine slag (FS) is an unavoidable by-product of coal gasification. FS, which is a
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Performance of Full-Component Coal Gasification Fine
2024/2/15 Ultrafine, highly active coal gasification slag (HCGS) was produced via a sustainable, green dry-ball-milling method. Coal gasification fine slag (CGS), a potential environmental pollutant, was used as a new source of
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Deep insight into phase transition and crystallization of high ...
2021/2/5 The treatment of high temperature molten slag usually involves a phase change cooling process coupled with crystallization behavior, which is a very challenging process and will significantly affect the high-temperature waste heat recovery, the vitreous content in slag, the quality of the as-cast slab, and the stable operation of the integrated ...
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Review of the characteristics and graded utilisation of coal ...
2021/7/1 Process for purifying coal gasification slag and system for realizing the process. CN Pat. (2018) 107641537 (in Chinese) Google Scholar [68] S.V. Vassilev, R. Menendez, A.G. Borrego, M. Diaz-Somoano, M.R. Martinez-Tarazona. Phase-mineral and chemical composition of coal fly ashes as a basis for their multicomponent utilization. 3 ...
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The recycling and reuse of steelmaking slags — A review
2019/7/1 The volume instability caused by free lime exposure to moisture means that the reuse of steelmaking slag is often limited as many potential applications, and the leaching behavior of steelmaking slag is important for environmental considerations. ... fine iron ore particles are mixed with a small amount of coal (5% by weight), and the mixture ...
获取价格Efficient and Safe Coal Ash Reuse Processing with Rotary Dryers
The proper equipment is crucial in increasing safety during coal ash drying for reuse. With technological advancements by companies like Heyl Patterson Thermal Processing, the potential risks associated with coal ash can be effectively managed while maximizing its beneficial reuse in various industries. Contact us for more information.
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The Effects of Pretreated Coal Gasification Slag Aggregates on the ...
2024/8/2 The integrated gasification combined cycle is a relatively new and eco-friendly power generation technology. However, this process produces coal gasification slag (CGS) as a by-product, which is usually landfilled or discarded. To enable efficient recycling of CGS, this study investigated the effects of using pretreated CGS as a fine aggregate on the quality and
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Processing and Reusing Technologies for Steelmaking Slag
About 40 million tons of steel slag a year, which is the by-product of iron and steel manufacture, is generated in Japan and the almost all the slag is reused for the materials, e.g. cement raw material, road base course material and civil engineering material, by effectively utilizing its characteristics such as chemical components and mechanical properties. Most of its purposes
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Deep insight into phase transition and crystallization of high ...
High temperature molten slags, such as blast furnace slag, mold flux, coal slag, etc., exist widely in the metal manufacturing and energy power industries and play important roles in equipment operation, energy saving and emissions reduction as well as resource reuse. The treatment of high temperature molten slag usually involves a phase change cooling process coupled with
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Acid-Alkali Deep Deashing and Alkali Activation of Coal
Nowadays, coal gasification fine slag (CGFS) generated during the coal gasification process has become difficult to treat bulk solid waste. CGFS contains high levels of residual carbon, which is difficult to recycle due to the tight binding of minerals with residual. In our study, the carbon source of active carbon (P-AC) was obtained by the molten-caustic leaching (MCL) method, in which ...
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On-site source-separation of microparticles and reuse of coal ...
2024/8/9 However, as an inevitable by-product, 15–20% solid residues including coal gasification fine slag (FS) and coal gasification coarse slag (CS) are produced [4], which poses a great threat to economic development and environment protection due to high annual emissions and improper disposals, such as stacking and landfill.
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(PDF) Industrial uses of slag. The use and re-use of iron and ...
2005/2/1 Hence, a collaborative processing of steelmaking slag and other P-bearing industrial solid wastes is proposed, providing a new solution for P recovery and the comprehensive utilization of ...
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Deep insight into phase transition and crystallization of high ...
2020/10/1 The treatment of high temperature molten slag usually involves a phase change cooling process coupled with crystallization behavior, which is a very challenging process and will significantly ...
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Characterization, carbon-ash separation and resource utilization of ...
2023/4/20 CGS is classified into coal gasification coarse slag (CGCS) and coal gasification fine slag (CGFS). The CGCS is directly discharged at the bottom of the gasifier, and its composition is mainly aluminosilicates in the amorphous glassy state with relatively low carbon content (Guo et al., 2014).CGCS can be used for many applications, such as cement, road
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Recovery of metal values from copper slag and reuse of
DOI: 10.1016/j.wasman.2017.09.024 Corpus ID: 30661972; Recovery of metal values from copper slag and reuse of residual secondary slag. @article{Sarfo2017RecoveryOM, title={Recovery of metal values from copper slag and reuse of residual secondary slag.}, author={Prince Sarfo and Avimanyu Das and Gary F. Wyss and Courtney Young},
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A review of sustainable utilization and prospect of coal gasification slag
2023/12/1 As the leading industry of coal chemical industry, Coal gasification plays an important role in efficient and clean utilization of coal. It is a process in which solid fuels such as coal, coke, or semi-coke react with gasifying agents under high temperature and pressure to produce gaseous products and a certain amount of slag (Aprianti et al., 2023; Xue et al., 2023;
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Deep insight into phase transition and crystallization of high ...
2020/10/1 The treatment of high temperature molten slag usually involves a phase change cooling process coupled with crystallization behavior, which is a very challenging process and will significantly ...
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Characterization, carbon-ash separation and resource utilization of ...
2023/4/20 CGS is classified into coal gasification coarse slag (CGCS) and coal gasification fine slag (CGFS). The CGCS is directly discharged at the bottom of the gasifier, and its composition is mainly aluminosilicates in the amorphous glassy state with relatively low carbon content (Guo et al., 2014).CGCS can be used for many applications, such as cement, road
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Recovery of metal values from copper slag and reuse of
DOI: 10.1016/j.wasman.2017.09.024 Corpus ID: 30661972; Recovery of metal values from copper slag and reuse of residual secondary slag. @article{Sarfo2017RecoveryOM, title={Recovery of metal values from copper slag and reuse of residual secondary slag.}, author={Prince Sarfo and Avimanyu Das and Gary F. Wyss and Courtney Young},
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A review of sustainable utilization and prospect of coal gasification slag
2023/12/1 As the leading industry of coal chemical industry, Coal gasification plays an important role in efficient and clean utilization of coal. It is a process in which solid fuels such as coal, coke, or semi-coke react with gasifying agents under high temperature and pressure to produce gaseous products and a certain amount of slag (Aprianti et al., 2023; Xue et al., 2023;
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Modification and resource utilization of coal gasification slag
2024/4/1 Coal gasification technology has led to a significant increase in CGS discharge and consequently, the disposal of gasified solid waste gasification slag has become a major concern [10].It is reported that, more than 70 million tons of CGS is produced every year in China [11].Only a very small part of the slag is used, while the vast majority of CGS is simply
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Preparation of coal gasification fine slag-based supercapacitive
2024/1/11 The coal gasification is the key process of clean usage of coal resource, which inevitably produces a large amount of coal gasification slag (CGS), and causes serious environmental pollution and ecological damage. The high ash content of coal gasification fine slag (CGFS) prevents the efficient utilization of residual carbon in CGFS. In this work, carbon-rich
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Enrichment and utilization of residual carbon from coal
2023/3/1 Slag is the main by-product of coal gasification. According to the difference in the discharge mode and particle size, coal gasification slag is mainly composed of two parts, namely coarse slag and fine slag (Pan et al., 2016).Herein, coarse slag is mainly discharged from the bottom of the gasifier, while fine slag is mainly from the dust removal device, including the
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Requirements and Policies - CT.gov
Applicable statewide for a particular material. Individual users must register for the GP and comply with its requirements. There are 2 Current BU GPs: Storage and Processing of Asphalt Roofing Shingle Waste for Beneficial Use and Recycling. Storage and Processing of Scrap Tires for Recycling and Beneficial Reuse. Copies of GPs, Registration forms, etc. available at:
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Review and Perspectives of Ash Slag Fluidity during Co
2024/1/2 The stable fluidity of slag at a high temperature is crucial for the long-period operation of an entrained-flow gasifier. The diversity and difference of coal ash make it difficult to meet the requirements for stable slagging in a gasifier. Consequently, coal blending or adding flux has been employed in the industry to improve the fluidity of coal ash slag. As a carbon
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Recent research progress on recycling metallurgical waste slag
2024/11/1 The utilization rate of SS exceeds that of LFS due to its lower basicity, although it remains considerably lower than the rates observed in developed countries in Europe and the United States, standing at approximately 30 % [4].Currently, the internal recycling of SS predominantly takes place within the smelting production process, serving purposes such as
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Processing Ash and Slag Wastes from Thermal Power Stations. Part 2
2018/11/29 For existing coal-fired power plants, current methods of utilizing ash and slag waste may be considered in addressing new environmental and economic risks. However, for new power sources, environmental considerations are much more important in selecting the coal-combustion technology. Technology based on a circulating fluidized bed is sometimes cited as
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Hazard-Free Treatment and Reuse of Magnesium Slag
48 2 Hazard-Free Treatment and Reuse of Magnesium Slag I. G. Farben Process: In this process, magnesium hydroxide and coke are evenly mixed and calcinated in shaft furnace. Chlorination is conducted to produce anhy-drous MgCl 2. As electrolytic raw material, it is electrolyzed to obtain magnesium with recycling of electrolytic byproduct Cl 2 ...
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Comprehensive review on metallurgical recycling and cleaning of copper slag
2021/1/28 Ni, Co can also be achieved in slag cleaning process. Reductive smelting of copper slag with addition of coal, pyrite (FeS 2 ) and fluxes (such as CaCO 3 ) in electric furnace is a potential ...
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Characteristics and environmental aspects of slag: A review
2015/6/1 Scientific interest in slag has been increasing steadily since the early 1990s. The number of slag studies that are referenced in this paper by publication date is shown in Fig. 1 (see Appendix A Summary of slag characterization references and type of data from each that was used in this paper, Appendix B Summary of slag application and reuse references for this
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