Features of Processes for Preparation and Performance …
In this study, the ed lightweight soil with 1.0 Mpa was prepared by cementitious materials composed of 40% cement and 60% multi-mixture of steel slag …
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In this study, the ed lightweight soil with 1.0 Mpa was prepared by cementitious materials composed of 40% cement and 60% multi-mixture of steel slag …
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The composite micronized powder is prepared by using blast furnace slag (BFS), water-quenched manganese slag (WQMS), manganese tailing slag (MTS) and …
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The utilization of steel slag in cement includes mainly three modes [ 55 ]: matching the clinker of cement raw material, producing low-clinker steel slag cement, and being an active addition [ 55 ]. The process of making steel slag cement is a simple manufacturing technique with less investment and low cost.
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1. Introduction. Steel slag is a by-product produced by the conversion of carbon-rich molten iron into steel in basic oxygen furnaces (BOFs) and electric arc furnaces (EAFs) during the steelmaking process, accounting for about 15 to 20 wt% of the crude steel production [1].The global steelmaking industry produced 1.8 billion tons of crude …
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The recycled aggregate prepared by crushing construction waste can replace natural aggregate for concrete production. During the crushing process, a large amount of powder with a particle size of less than 0.16 mm was …
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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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The invention relates to a production process of steel slag micro-powder, which comprises the following steps: enabling wet steel slag powder with water content …
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According to the above analyses, we built the flowchart of the study in Figure S1. At first, we used cement (PC), steel slag micronized powder (SSMP), granulated …
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The excessive presence of phosphate in water leads to eutrophication, prompting us to develop a novel material named PC/SP/CA-H (Portland cement/slag powder/coal ash-hydrate). The experimental data accorded with the pseudo-second-order kinetics and Langmuir model, suggesting that chemical interactions predominated in the …
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The gradation of aggregate and the hydration reaction of cementitious materials are important factors affecting the performance of backfill materials. Steel slag powder (SSP) can be used as both aggregate and cementitious material according to different particle size. SSP has multiple influencing effects on coarse tailings cemented …
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The creep and fatigue properties of asphalt mastic are mainly related to the material itself, as well as the interactions among different components. For example, the physical properties, size, and shape of inorganic micro powder filler will affect the performance of asphalt mastic. Tao et al. [5] studied the surface characteristics ...
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The invention relates to a production process of high-activity steel slag micro powder, which comprises the following specific steps: the steel tailings enter a raw material hopper through a feeder; screening the steel tailings in the raw material hopper by a screening machine; the steel tailings enter a micro powder pre-selection machine through a …
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Steel slag is the main solid waste produced in the process of steel-making. Chinese steel slag has the characteristics of large output and low utilization. Most of the steel slag is stored in the open air, which leads to land occupation and potential safety hazards of heavy metal infiltration into the soil. Although steel slag has been applied ...
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The powder made by drying and grinding the water slag is fine powder. What is the function of water slag powder？ Application of water slag powder：It is mainly used to produce cement mixture. Water slag, also known as blast furnace water quenched slag, is a by-product of blast furnace ironmaking, also known as mineral …
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The composite micro-slag is composed of mixed grinding micro-slag from 70% lead-zinc tailings, 20% molybdenum tailings, and 10% nickel tailings. The …
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Waste steel slag is an industrial by-product during the process of steelmaking, and its output approaches 15–20% of steel production [37], [38]. In China, the annual steel slag output reaches about 100 million tons and the accumulated stockpile exceeds 1 billion tons [39], [40], but its comprehensive utilization rate is only about 20% ...
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In order to enhance the slag resistance of Al 2 O 3-spinel castables, (Al,Cr) 2 O 3 is added into Al 2 O 3-spinel system as a pre-synthesized micro-powder.Firstly, (Al,Cr) 2 O 3 micro-powder is synthesized by sintering under reduction conditions to prevent the formation of hexavalent chromium. The Al 2 O 3-spinel castables are …
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The expanded slag ball is a porous lightweight slag formed by cooling the slag with high cooling water. The production methods include spray method, trench method and roller method. It can be used to make lightweight aggregate, inner wall panels, floors, etc. it can also be used in load-bearing structures. Blast furnace slag can also be used to ...
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Due to the low hydration activity and poor volume stability, extensive steel slag utilization is restricted. In this paper, the hydration process and microstructure of alkali-activated materials with steel slag as a cementitious material and fine aggregate were studied. The phase composition and micro-morphology of hydration products were …
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of phosphate slag and the synthetic process of recycling and reuse. It has a deep understanding of it and has mastered the technology of phosphate slag to purify iron phosphate[5,8,25-26]. I have adopted a new method to purify and prepare iron phosphate micro-powder with smaller particle size. The purified and modified iron phosphate
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It is an ideal equipment choice for processing solid waste such as water slag and steel slag. HCM Machinery can provide full-process slag powder process …
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1.slag powder process technology scheme technology principle and process: the technology of slag solid waste as raw material, raw materials through the feeding system into the slag vertical grinding system, after crushing, grinding, drying, gas conveying, powder, provided by hot blast furnace slag in grinding drying needs heat, combined with ...
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Waste steel slag is an industrial by-product during the process of steelmaking, and its output approaches 15–20% of steel production [37], [38]. In China, the annual steel slag output reaches about 100 million tons and the accumulated stockpile exceeds 1 billion tons [39], [40], but its comprehensive utilization rate is only about 20%, …
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The objective of this study was to reduce the stockpile of steel slag, which is a solid waste generated in the steelmaking process, and promote the resource utilization of steel slag powder (SSP) in construction projects. Experimental research was conducted on SSP and fly ash (FA) as supplementary cementitious materials. Composite cement paste …
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Homogenized micro-crack crushing can fully retain the bearing capacity of concrete pavement, but local weak road base needs to be reinforced before being directly overlaid with hot-mixed asphalt. Therefore, indoor tests were conducted to study the mechanical properties of slag-based geopolymer as a grouting material for weak road …
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Slag powder is a process with characters of multivariables, strongly coupling and nonlinearity. The material layer thickness plays an important role in the process. It …
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Adding 10% and 20% steel slag increases the fluidity by 10% and 25%, respectively. This is because the steel slag in steel slag is usually ground to form a powder, its particle size is larger, and its particle shape is more rounded than that of recycled micro-powder, which helps to improve the fluidity of cementitious materials.
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In this experiment, ultrafine iron phosphate micro-powder was prepared by hydrothermal method which used phosphate slag as an iron source. The effects of reaction temperature, surfactants type and ...
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A high added value steel slag and slag composite micro powder(SSCM) technology was provided to address the issues of low activity of steel slag and low resource utilization rate, which fully stimulated the activity of steel slag and realized the high added …
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Steel slag micro powder is an ultrafine powder processed from steel slag through magnetic separation and ball milling technology. It contains various oxides and …
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Steel slag micronized powder, granulated blast furnace slag, and cement were used as cementitious materials to prepare a ed lightweight soil for roadbed filling to reduce the settlement and additional stress of the foundation and to solve the environmental problems caused by the storage of large amounts of steel slag. However, …
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Ordinary Portland cement (OPC, P·II 52.5, 3144 kg/m 3), limestone powder (LP, 2200 kg/m 3), silica fume (SF, 0.1–0.15 μm, 2700 kg/m 3), steel slag powder (SSP, 3000 kg/m 3), fine river sand (FS, 0–0.6 mm), coarse river sand (CS, 0.6–1.25 mm), water and superplasticizer are used as raw materials. Table 1 lists the chemical compositions …
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The intrinsic mechanism and impact process of how coal gasification coarse slag (CGCS) amends the physicochemical properties of a specific soil based on its properties are not yet clear. The study explored the properties of CGCS that can be used for soil amendment by evaluating the properties of topsoil and CGCS. Different CGCS …
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