The thermal behavior of the Ag particles coated with different amines is measured by thermal analysis. Finally, the mechanism of NOA-modified Ag nanoparticles to improve the sintering performance is proposed. This study can provide effective data and theoretical support for the further promotion and application of nano-Ag pressureless …

Interdependence of green density and corresponding powder agglomeration and their influence on the sintering behaviour of commercial fine zirconia powders under a constant rate of heating (non-isothermal sintering) were investigated.

Physical mechanisms, such as tumble agglomeration and sintering, may further enhance either of the coating-induced or melt-induced mechanisms. Of the operational variables examined in this review, temperature, fluidizing gas velocity, fuel, bed material and additives have been shown to have the greatest effect on agglomeration …

There are different pathways throughwhichmasstransfertakesplace.Sinteringtechniquesaregenerallyclassified based on diffusion pathway and type of applied field/heating to assist in sintering. This chapter deals with the various techniques of ceramic shape forming, sintering techniques, …

It should be mentioned that for initially agglomerate-free powder compacts, the size of the second-generation (Types 3 and 4) pores is determined by the degree of sintering-induced agglomeration in the compact, which in turn is controlled by the microstructural homogeneity in the green state.

This review aims to understand the sintering of nanomaterials, with a clear focus on the spark plasma sintering technique and its associated sintering parameters, bordering on intricate issues on densification, coarsening of particles, and grain growth.

The obtained structural change of the sintering bed show that the proposed model is a potential tool to analyse the agglomeration phenomena occurring in the iron ore sintering process under various conditions.

Sintering is the process of heating powdered materials, such as metals or ceramics, below their melting point. Learn more about the types of sintering here.

Sintering is a physical process due to crystallite growth, and agglomeration is the cohesion of neighboring particles. Two factors may be associated with this improvement: the higher specific surface areas of oxygen carriers with low ratio of Fe 2 O 3 and higher Tamman temperature of the spinel than iron oxides.

This approach is becoming widespread in metals and ceramics, as a way of producing complex net-shape parts of great mechanical properties by a low per-part cost process that is highly …

This one-page reference provides information on agitation, compression and sintering methods of agglomeration and their mechanisms.

Iron ore sintering is the iron ore powder agglomeration process that changes fine iron ore powder into the lumpy iron-bearing raw material used for blast furnace ironmaking. High-temperature process and addition of alkaline flux will improve metallurgical performance of iron-bearing raw material. Besides, the sintering process will consume …

Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents, and solid fuel (coke).

Certain special types of iron ore, particularly the iron-bearing recycled materials from steelworks, are incompatible with sintering and pelletizing processes for agglomeration due to their properties, but they are compatible with briquetting process.

In this review, the present status of nanosilver sintering is adapted in detail. This review shows the current scholarly exploration and achievements in this field through the two aspects of manufacturing and reliability. The preparation of nanosilver particles, organic coating and sintering methods, microstructure and failure modules of sintered …

The process of steel making f rom iron ores involves three main pyrometallurgical stages: (1) agglomeration processes of iron ore fines such as pelletisation and sintering, (2) reduction of iron ...

Discrete element method (DEM) is used to study the factors affecting agglomeration in three-dimensional copper particle systems during solid-state sintering. A new parameter is proposed to characterize agglomeration. The effects of a series of factors are studied, including particle size, size distribution, inter-particle tangential …

Extruders can heat powders to temperatures high enough to cause melting or sintering. Two types of extruders are used — ram extruders are used batch-wise, while screw extruders are for continuous processing.

This study focused on improving recycling of carbon-bearing dusts from integrated steel plants by the composite agglomeration process (CAP), in which four types of the dusts were prepared as ...

Because of these processes, a fine granulo-metry is produced, and thus iron agglomeration process is necessary. There are several agglomeration processes including: briquetting, extrusion, nodulization, pelletizing and sintering, although pelletizing and sintering are the most widely used, and especially sintering process (70% blast …

This book focuses on agglomeration, or the size enlargement process, of iron ores. This process sits at the interface of mineral processing and extractive metallurgy. The book begins with a discussion of raw materials preparation and the beneficiation process. It then describes fundamental principles of the sintering and pelletization processes, including …

Manganese carbonate ores are becoming an increasingly important source of manganese. Usually these ores undergo thermal pretreatment which involves calcination and agglomeration using fossil fuels as the major energy source. In this study, the application of microwave energy for the pretreatment step was investigated. The real …

The pressure-drop sintering technique can predict the agglomeration propensity for coals. Samples with a sintering temperature lower than the operating temperature of the PFBC showed agglomeration.

The growth of silica nanoparticles by agglomeration and viscous flow sintering is studied from free molecular to transition regime by off-lattice event-driven (ED) simulations. Coagulation by simultaneous agglomeration and sintering takes place at high temperature environments, where sintering and collision rates are comparable.

Porous ZrO2 ceramics were fabricated by compacting a fine ZrO2 powder, followed by pressureless sintering. Two unidirectional pressures of 30 and 75 MPa were used to prepare the green compacts. The strength and the fracture toughness of porous ZrO2 specimens sintered from the compacts prepared by 75 MPa were substantially …

This study focused on improving recycling of carbon-bearing dusts from integrated steel plants by the composite agglomeration process (CAP), in which four types of the dusts were prepared as pelletized feed, while the other raw materials were used as matrix feed for sintering to produce agglomeration product as a substitute for …

Request PDF | On Jul 1, 2023, Zhenwu Miao and others published Sintering and agglomeration characteristics of industrially prepared CaMn0.5Ti0.375Fe0.125O3-δ perovskite oxygen carrier in chemical ...

They defined this onset temperature as 'initial sintering temperature'. After their work, numerous investigations have been published on high-temperature agglomeration–defluidization phenomena in fluidized beds applied in different areas.

ABSTRACT Sintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slag-forming elements and coke. The purpose of sintering is to obtain a product with suitable composition, quality and granulometry to be used as burden material in the blast furnace. This process is widely studied and researched in the iron …

Semantic Scholar extracted view of "The sintering temperature of ash, agglomeration, and defluidisation in a bench scale PFBC" by A. Al-Otoom et al.