Metallurgical Slag

Dang, Jie; Li, Jichao; Lv, Xuewei; Yuan, Shuang; Leszczyńska-Sejda, Katarzyna

doi:10.3390/cryst12030407

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…The results of the analysis of hydraulic activity of the obtained slag granules showed that on average their activity on CaO absorption is 650-750 mg/g, which is almost twice higher than that of slag granulated by traditional water technologies [21,30,31]. The slag granulated in this way, in addition to its use in the production of construction and ceramic materials [32], can also be successfully used as a substitute for mineral abrasives applied for sandblasting of parts for various purposes [33].…”

Section: Research Results and Discussionmentioning

confidence: 99%

A novel method of hydro-vacuum dispersion of metallurgical melts: research and implementation

Sakhvadze,

Jandieri,

Saralidze

et al. 2024

Sediment Transport Research - Further Recent Advances

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In parallel with the gradual expansion of the consumption of powder materials and the increasing demands placed on them, the competition between the producers of powders is continually intensifying. There is no doubt that the future belongs to technologies that provide high productivity and low-cost powders. Consequently, the technology and techniques of powder production need constant revision and modernization. For this goal we have developed and proposed a new method and installation for hydro-vacuum dispersion of melts, the essence of innovation and advantage of which lies in sucking and dispersing the melt in the direction opposite to the action of the force of gravity, under gravity overload 150-200g conditions, where the main work is performed by hydraulic rarefaction resulting from a sharp refraction of direction (on 162-degree angle) and rapid expansion (х10) of a high-pressure water annular flow, with the superimposition of spatial shock- pulsating waves generated in the outer shell of the formed cone-shaped vortex. The device is characterized by high production and low energy costs, while powders - by increased specific surface, improved purity and high activity. The enhanced activity of our powders is due to the formation of non-equilibrium mechanoactivation structural-deformation stresses in them, which leads to the accumulation of excess chemical energy in them. It is justified that the application of the method is also highly effective for dispersing slag melts and obtaining amorphous hardened powdery raw materials with high hydraulic activity, suitable for the production of construction cement. Appropriate recommendations for the industrial implementation of the developed innovative technology have been proposed.

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Section: Research Results and Discussionmentioning

confidence: 99%

A novel method of hydro-vacuum dispersion of metallurgical melts: research and implementation

Sakhvadze,

Jandieri,

Saralidze

et al. 2024

Sediment Transport Research - Further Recent Advances

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“…Metallurgical slag is a byproduct generated during high-temperature metallurgical processes, and its large quantity and complex chemistry have been a burden and barrier to industrial development [10]. As a byproduct of iron ore, approximately 2.5-3 tons of iron tailings are generated for every ton of iron produced [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Copper and Zinc Tailing Powder on the Hydration of Composite Cementitious Materials

Han

Zhang

2022

Materials

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Copper and zinc tailing powder (CZTP) is finely ground waste after copper minerals and zinc minerals have been extracted from ores during beneficiation. CZTP has certain potential cementitious properties and can be used in composite cementitious materials. The pore size distribution and hydrate phase assemblage of the hardened samples are investigated using MIP and XRD. SEM is employed to examine the microstructure of the specimens. The chemically bonded water is used to measure the degree of hydration. CZTP lowers the hydration heat evolution rate and the total hydration heat. The hydration heat evolution rate reduces as the w/b ratio rises, whereas the total hydration heat of blended cement paste rises. CZTP diminishes the strength development of the Portland-CZTP system, and the strength decreases as the CZTP level increases. CZTP reduces the critical pore diameters of the Portland-CZTP system with w/b = 0.3 after curing for 3 d and 28 d, while increasing the critical pore diameters of samples with w/b = 0.45 at the same age. CZTP increases the gel micropores of Portland-CZTP. Although CZTP increases the pore volume content of blended cement pastes with w/b = 0.3, the volume of harmful pores decreases. The pore volume content of the Portland-CZTP system decreases as the w/b ratio increases. However, the volume of harmful pores increases with a higher w/b ratio. The main hydration products in the Portland-CZTP system are portlandite, ettringite, and C-S-H. CZTP mainly played the role of filling or acting as a microaggregate in the Portland-CZTP system.

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Metallurgical Slag

Abstract: The Special Issue on “Metallurgical Slag” is a collection of 23 original articles dedicated to theoretical and experimental research works providing new insights and practical findings in the field of metallurgical slag-related topics [...]

Cited by 2 publications

References 23 publications

A novel method of hydro-vacuum dispersion of metallurgical melts: research and implementation

A novel method of hydro-vacuum dispersion of metallurgical melts: research and implementation

Influence of Copper and Zinc Tailing Powder on the Hydration of Composite Cementitious Materials

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