Thermal and process calculation of a high-temperature shaft furnace

Refractories ◽  
1994 ◽  
Vol 35 (3) ◽  
pp. 99-101
Author(s):  
A. A. Kulikov ◽  
V. G. Abbakumov
Keyword(s):  
High Temperature ◽  
Shaft Furnace ◽  
Process Calculation

scholarly journals Shaft Furnace Simulation by Mathematical Model Considering Coke Gasification Rate in High Temperature

2016 ◽  
Vol 56 (2) ◽  
pp. 239-244 ◽  
Author(s):  
Yuki Iwai ◽  
Natsuo Ishiwata ◽  
Ryota Murai ◽  
Hidetoshi Matsuno
Keyword(s):  
Mathematical Model ◽  
High Temperature ◽  
Shaft Furnace ◽  
Gasification Rate

RADON Operational Experience in High-Temperature Treatment of Radioactive Wastes

2014 ◽  
Vol 94 ◽  
pp. 121-130 ◽  
Author(s):  
Sergey V. Stefanovsky ◽  
Yuri V. Myshkin ◽  
Dmitri V. Adamovich ◽  
Michael D. Beliy
Keyword(s):  
High Temperature ◽  
Environmental Remediation ◽  
Shaft Furnace ◽  
High Energy ◽  
Temperature Treatment ◽  
Radioactive Wastes ◽  
High Temperature Treatment ◽  
Operational Experience ◽  
Cold Crucible ◽  
Exchange Resins

FSUE Radon deals with collection, transportation, treatment, conditioning, and interim storage and final disposal of conditioned low-and intermediate-level radioactive wastes (LILW) as well as radiation monitoring, decontamination and environmental remediation of Moscow and Moscow area. Liquid LILW with high salinity is subject to vitrification at the Radon full scale vitrification plant using a cold crucible inductive melting (CCIM) at temperatures of 1150-1200 °C. The bench-scale cold crucible based unit is used for research works and feasibility study on new promising ceramic and glass-ceramic waste forms based on incinerator slag and ash. Solid and liquid organic LILWs are treated in a plasma shaft furnace with liquid slagging at temperatures of 1400-1500 °C. Molten slag is solidified in containers yielding a glass-crystalline material with high chemical durability and strong mechanical integrity suitable for safe long-term storage and disposal in both interim repositories and underground sites. One of the promising methods for LILW treatment is application of thermochemical reactions – self-propagating high-temperature synthesis (SHS) with high energy release which is considered as a potential technology for treatment of spent ion-exchange resins, silts and grounds and some specific wastes.

Operation of a high-temperature shaft furnace for firing satkinskii magnesite

Refractories ◽  
1994 ◽  
Vol 35 (8) ◽  
pp. 267-269
Author(s):  
A. A. Kulikov ◽  
V. G. Abbakumov
Keyword(s):  
High Temperature ◽  
Shaft Furnace

scholarly journals Energy Efficient Technology of Solid Domestic Waste Recycling in Shaft Furnaces of Cupola Type

2017 ◽  
Vol 2 (2) ◽  
pp. 8
Author(s):  
V.I. Matyukhin ◽  
Yu.G. Yaroshenko ◽  
O.V. Matyukhin ◽  
S.Ya. Zhuravlev
Keyword(s):  
High Temperature ◽  
Shaft Furnace ◽  
Waste Recycling ◽  
Efficient Technology ◽  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Energy Plant ◽  
Mineral Components ◽  
Preliminary Preparation ◽  
Energy Efficient Technology

<p>The technology of high-temperature pyrolysis (over 850°C) performed in an energy plant based on a shaft melting unit is one of the most efficient ways of solid domestic waste neutralization and recycling. It includes preliminary preparation in the extruder, high-temperature pyrolysis under the conditions of shaft furnace smelting with addition of solid fuel, cleaning and use of pyrolysis gases as a fuel in the boiler. The generating solid waste represents safe mineral components.<strong></strong></p>

scholarly journals Shaft Furnace Simulation by Mathematical Model Considering Coke Gasification Rate in High Temperature

2015 ◽  
Vol 101 (8) ◽  
pp. 416-421 ◽  
Author(s):  
Yuki Iwai ◽  
Natsuo Ishiwata ◽  
Ryota Murai ◽  
Hidetoshi Matsuno
Keyword(s):  
Mathematical Model ◽  
High Temperature ◽  
Shaft Furnace ◽  
Gasification Rate

Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

1973 ◽  
Vol 31 ◽  
pp. 184-185
Author(s):  
M.S. Grewal ◽  
S.A. Sastri ◽  
N.J. Grant
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Thermomechanical Processing ◽  
Cold Work ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Mechanical Processing ◽  
Uniform Dispersion ◽  
Oxide Particles ◽  
Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Lattice Imaging of Grain Boundaries in Ceramics

1977 ◽  
Vol 35 ◽  
pp. 114-115
Author(s):  
D. R. Clarke ◽  
G. Thomas
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Silicon Nitride ◽  
Grain Boundaries ◽  
High Temperature Strength ◽  
Current Interest ◽  
Lattice Imaging ◽  
Special Significance ◽  
Structural Applications ◽  
Refractory Ceramics

Grain boundaries have long held a special significance to ceramicists. In part, this has been because it has been impossible until now to actually observe the boundaries themselves. Just as important, however, is the fact that the grain boundaries and their environs have a determing influence on both the mechanisms by which powder compaction occurs during fabrication, and on the overall mechanical properties of the material. One area where the grain boundary plays a particularly important role is in the high temperature strength of hot-pressed ceramics. This is a subject of current interest as extensive efforts are being made to develop ceramics, such as silicon nitride alloys, for high temperature structural applications. In this presentation we describe how the techniques of lattice fringe imaging have made it possible to study the grain boundaries in a number of refractory ceramics, and illustrate some of the findings.

Effect of Improved ThO2 Particle Dispersion in Nickel on High-Temperature Strength

1970 ◽  
Vol 28 ◽  
pp. 444-445
Author(s):  
E. R. Kimmel ◽  
H. L. Anthony ◽  
W. Scheithauer
Keyword(s):  
High Temperature ◽  
Metal Matrix ◽  
Oxide Particle ◽  
Oxide Phase ◽  
Dislocation Motion ◽  
Particle Dispersion ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Oxide Particles ◽  
The Stability

The strengthening effect at high temperature produced by a dispersed oxide phase in a metal matrix is seemingly dependent on at least two major contributors: oxide particle size and spatial distribution, and stability of the worked microstructure. These two are strongly interrelated. The stability of the microstructure is produced by polygonization of the worked structure forming low angle cell boundaries which become anchored by the dispersed oxide particles. The effect of the particles on strength is therefore twofold, in that they stabilize the worked microstructure and also hinder dislocation motion during loading.

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