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Slag Waste Dupmschemichal Analysis
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Multiscale analysis of fine slag from pulverized coal …
Fine slag (FS) is an unavoidable by-product of coal gasification. FS, which is a simple heap of solid waste left in the open air, easily causes environmental pollution and has a low resource utilization rate, thereby restricting the development of energy-saving coal gasification technologies. The multiscale analysis of FS performed in this study …
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Characteristics and environmental aspects of slag: A review
Environmental studies, most commonly on non-ferrous slag, focus on understanding the potential environmental impacts of slag deposited as waste, and …
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Waste coal gasification fine slag disposal mode via a …
Gasification fine slag (GFS) is the waste produced in the coal gasification process, its production and storage volume are increasing with the large-scale promotion of coal gasification technology. ... Distribution modes of residual carbon and ash in coal gasification fine slag and its feasibility analysis as particle electrodes. Chemosphere ...
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Energy and exergy analysis of waste heat recovery from …
high temperature steel slag, which generates a pressure of 0.2–0.4 MPa, causing f-CaO in the slag to dissipate rapidly, thus stabilizing and pulverizing the slag. Figure 2 displays the steel slag waste heat system combined with the solar power system. The system con-sists of a steel slag hot smothering waste heat system,
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Quantifying the microstructure evolution and phase
A quantitative energy dispersive X-ray spectroscopy (EDS) image analysis methodology was developed to measure the microstructure evolution and phase assemblage of solid waste. Based on the proposed EDS image enhancement algorithm, the component complexity and structural heterogeneity of basic oxygen furnace slag …
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Environmental benefit assessment of steel slag utilization …
Highlights. •. System expansion and allocation choices may lead to opposite interpretations. •. Environmental benefit caused by replacement of steel slag aggregate …
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Waste slag benefits for correction of soil acidity
The agricultural land resources are an issue world-wide and through this investigative study we showed that the mixture of blast furnace slag and waste slag …
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Advanced characterization of IGCC slag by automated SEM-EDS analysis
Here, we report on the application of an automated SEM-EDS system for gaining an improved understanding of IGCC slag, in addition to the usual testing methods, such as X-ray fluorescence (XRF) and X-ray diffraction (XRD). SEM-EDS enables an accurate quantitative analysis based on advanced EDS performance with a silicon drift …
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Sustainable Approaches for LD Slag Waste Management in …
In order to recycle and reuse the waste, assessment of their physicochemical, mineralogical and geotechnical characterization is imperative. This …
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Mechanism and kinetics analysis of valuable metals
Copper-cadmium waste slag is roasted at 1200 °C–1300 °C or even higher in a rotating kiln using coke or coal powder. Zinc, copper, cadmium, and lead in waste slag are converted to gas phase. ... According to the results of the EDS analysis, the major components of slag after conventional leaching are Pb and S, with minor amounts of …
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Analysis of suitability of TPP ash-slag waste as materials for …
A very promising type of materials suitable as raw materials for obtaining materials using low-temperature technologies is ash and slag waste (ASW) from the combustion of solid fuels at power plants. Despite changes in power generation, dependence on coal energy remains significant.
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Thermodynamic analysis and experimental verification of …
Recovering valuable resources from waste sulfur slag is profoundly significant in terms of making profit and encouraging sustainable development within the tin industry. Sulfur slag is a hazardous waste, and a substantial amount of tin and cuprous sulfide is present in waste sulfur slag.However, tin and cuprous sulfide readily react to …
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Alkali-activated slag supplemented with waste glass
Alkali-activated slag supplemented with waste glass powder: Laboratory characterization, thermodynamic modelling and sustainability analysis December 2020 Journal of Cleaner Production 286(1–4 ...
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Thermal-chemical conversion of sewage sludge based on waste …
A multi-stage waste heat recovery process combined with endothermic reaction reactions (carbonization and activation) was proposed in this research. As a typical application sample, mass and energy calculation of sewage sludge carbonization and activation process are studied based on copper slag's waste heat cascade recovery …
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Thermodynamic Analysis of Blast Furnace Slag Waste Heat …
The blast furnace (BF) slag waste heat was recovered by an integrated system stage by stage, which combined a physical and chemical method. The water and coal gasification reactions were used to recover the heat in the system. Based on the first and second law of thermodynamics, the thermodynamic analysis of the system was …
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Processing of Non-Ferrous Metallurgy Waste Slag for its
The research results showed (Fig. 1) that the real waste in the form of slag from Waelz processing contained calcium, silicon, oxygen, iron, aluminum (also …
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Construction demolition wastes, Waelz slag and MSWI …
The objective of the study is to analyze the technical suitability of using secondary materials from three waste flows (construction and demolition waste (CDW), Waelz slag and municipal solid waste incineration (MSWI) bottom ash), under the regulations and standards governing the use of materials for road construction.
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Thermodynamic analysis on molten slag waste heat …
Slag is a waste product from the pyrometallurgical processing of various ores [2]. The sensible heat in billions of tons of molten slag (such as blast furnace slag, steel slag, copper slag, zinc slag, lead–zinc slag and nickel slag) is a promising source of waste heat with a temperature of over 1300 C all over the world. At present, the ...
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shibang/sbm granulated blast furnace slag waste in south …
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Smelting reduction and kinetics analysis of magnetic …
The reduction of magnetic iron in the copper molten slag using waste cooking oil was a first-order reaction, and the rate-limiting step was the mass transfer of Fe3O4 through the liquid boundary ...
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Comprehensive Analysis of Steel Slag as Aggregate for …
There are many studies on the use of BOF slag for road construction, but they use treated slag or remain at a laboratory level, as reflected in the reviews conducted by Kambole et al. [23] and Kumar and Varma [23,24]. Another example is the work carried out by Dayioglu et al. [25]. They evaluated BOF ageing slag that was coated with …
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Sustainable and Comprehensive Utilization of Copper Slag: A …
Large amounts of copper slag are produced every year and major fractions of it are currently disposed, not withstanding the multiple ways the material can be used. Application of the slag is often limited by the presence of hazardous elements and their leaching behavior so they can potentially pollute soil, surface water and underground …
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Slag Analysis | Bruker
The analysis of slag, the complex mineral mixture formed during iron and steel processing, can be used to determine how efficiently the steelmaking process is running and to predict the quality of the steel being produced. In-process slag monitoring allows for the real-time optimization of the steelmaking process - helping increase efficiency ...
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Multiscale micromechanical analysis of alkali-activated fly ash-slag
In this study, low-calcium fly ash and ground granulated blast-furnace slag were used as precursors (P), the chemical composition and the average particle size of which are presented in Table 1.Based on the authors' previous study [21], a mixture of SH solution with molarity of 10 and SS solution with modulus (molar ratio of [SiO 2]/[Na 2 …
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Catalytic pyrolysis of waste printed circuit board with copper slag …
Co-pyrolysis of waste printed circuit boards (WPCB) and copper slag (CS) to generate high-value products is a promising approach in view of synergistic waste disposal and the circular economy. In this study, the catalytic pyrolysis of WPCB with CS to generate H 2-rich gas (H 2, CO, CH 4, etc.) was proposed. The pyrolysis behavior of CS on …
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Analysis of a cascading power cycle without electric …
In this article, a novel cascading power cycle (CPC) driven by waste heat in a wide temperature range is proposed for promoting the energy grade, heat source recovery rate and cycle performance, which is consisted of a pumpless absorption power cycle and a pumpless organic Rankine cycle, taking ammonia-water and R245fa as working fluids, …
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Composition of Several Phases in LD Slag | Download Table
The optimal factor level combination was identified to be 8% sodium lignosulfonate, 1% NaCl, 5% MnO2, and 7% KNO3, with a maximum sulfur fixing efficiency of 70.81%. …
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Copper slag and high-strength concrete
Abstract. In this work, we aim to prepare M30 grade concrete utilizing copper slag as a replacement material for fine aggregates in proportions of 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and in the concrete. The experiment was conducted at constant w/b and w/c ratios with varying amounts of superplasticizer, and …
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Energy and exergy analysis of waste heat recovery from
In this study, the energy and exergy of the organic Rankine cycle driven by steel slag waste heat and solar energy were analyzed for various system configurations. In the system design, the technology of crushing waste heat pressurized hot smothering technology of steel slag rolls was considered. Subsequently, a regenerator was …
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Optimization Analysis of Mechanical Properties of Fly Ash …
2. Main Components and Particle Size Distribution of Coal-Based Solid Waste in the Ningdong Area. In this paper, fly ash-based gasification slag with high content is taken as the main research object, supplemented by coal gangue, desulfurization gypsum, and furnace bottom slag, and then mixed with ordinary 42.5 Portland cement to …
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Thermodynamic Analysis of Blast Furnace Slag Waste …
Thermodynamic Analysis of Blast Furnace Slag Waste Heat-Recovery System Integrated with Coal Gasification W.J. DUAN,1,3 P. LI,2 W. LEI,2 W. CHEN,2 Q.B. YU,1,4 K ...
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Plasma-chemical waste processing: numerical analysis …
dynamic analysis of plasma processing of waste, the universal program for calculating multicomponent heterogeneous systems TERRA was applied [12]. The calculations were performed in the temperature range of 300–3000 K at a pressure of 1 atm. The initial process mixture had the following composition (mass %): ASW — 100 and air 10.
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Mechanical, microstructure and reaction process of calcium carbide slag
The paper attends to the utilization and performance improvement of waste red brick powder activated by calcium carbide slag (CCR). Therefore, the improvement of mechanical properties and microstructure of calcium carbide slag-waste red brick powder based alkali-activated materials (CWAAMs) by silica fume, composite activator and …
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Analysis of direct shear test of incineration slag reinforced …
The municipal solid waste incinerator slag and the treated 145/70R12 scrap standard car tires used in the test are shown in Fig. 2 (a). The number of tire strips was converted by calculating the tensile strength of biaxial geogrid and individual tire strips of the same size (i.e. T geogrid = n × T tire) to obtain a number of 15 tire strips, which were …
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Thermodynamic analysis of waste heat recovery of molten blast furnace slag
Introduction. Molten BF (Blast Furnace) slag is the byproduct of iron-making process at the high temperature ranging from 1723 K to 1923 K. Because of its low thermal conductivity, ranging from 1 to 3 W m −1 K −1 for solid to 0.1–0.3 W m −1 K −1 for liquid [1], the waste heat recovery of molten BF slag is difficult.Now, the treatment of molten BF …