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dry fly ash systems

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Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004161
EISBN: 978-1-62708-184-9
...Abstract Abstract Ash handling is a major challenge for utilities and industries using coal as a primary fuel. This article discusses the operating problems associated with conventional fly ash/bottom ash handling systems. It describes the two types of fly ash systems, namely, dry and wet fly...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003050
EISBN: 978-1-62708-200-6
... industry and as raw materials for other processes. This article describes the recycling of in-process scrap and industrial wastes (fly ash, red mud, metallurgical waste, and other waste products), and applications of these recycled products. It focuses on environmental regulations such as Resource...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003843
EISBN: 978-1-62708-183-2
... Material Primary contribution/desired property Portland cement Cementing material/durability Blended cement Cementing material/durability; high strength Fly ash Cementing material/durability; high strength Slag Cementing material/durability; high strength Silica fume Cementing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
.... The first is increases in heat flux. In a superheater or a reheater, partial blockage of the convection pass by fly ash will increase the flue-gas flow to certain regions. Higher velocity will increase the steam-side heat-transfer coefficient, h 0 , and will increase metal temperature. Flame impingement...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004137
EISBN: 978-1-62708-184-9
... the materials. Erosion generally occurs as a result of fly ash carried by the gas impacting a surface in a relatively dry area of the system or the liquid slurry impinging on a wetted surface. In either case, areas susceptible to corrosion attack are produced. Where pH is neutral or higher, austenitic...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005339
EISBN: 978-1-62708-187-0
...-rich zone Fig. 30 (a) Microstructure of Al-SiC-graphite hybrid composite. (b) Cylinder liners made out of hybrid composites. (c) Hybrid composite disc brake. (d) Hybrid composite brake rotor Fig. 31 (a) Fly ash cenospheres. (b) Fly ash cenospheres in α-aluminum matrix Fig...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004159
EISBN: 978-1-62708-184-9
... precipitator housing and fittings and on the chimney stack. Fly ash precipitators are not normally used on oil- or gas-fired equipment, but are usually present on coal-fired systems or incinerator exhaust streams. Filter bags are sometimes used instead; however, both methods of dust collection are located...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001737
EISBN: 978-1-62708-178-8
..., dry mixing can achieve precision and accuracy of ±5 to 10%. Sample types to which this technique has been applied are coal, fly ash, precipitator and bottom ash, and geological materials. Spark source mass spectrometry can be used to determine the concentrations of chromium, nickel, and manganese...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003472
EISBN: 978-1-62708-195-5
... production alloys, a hard second phase such as silicon carbide (SiC) or aluminum oxide (Al 2 O 3 ) is used. Other reinforcements include graphite, boron, boron carbide, fly ash, and titanium carbide. The alloys can be discontinuously reinforced with particles and whiskers or continuously reinforced...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004168
EISBN: 978-1-62708-184-9
...) concrete mix designs. Fly ash, a by-product from burning coal, is a pozzolanic material that can be used to replace cement. Pozzolans are finely divided mineral additions, or mineral admixtures, that, when mixed with calcium hydroxide, alkalis, and water, produce a cementitious material. Good mix designs...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005249
EISBN: 978-1-62708-187-0
... content (typically, a blend of gray and white gypsum) is commonly 50 to 60%, by weight, of the dry mixture. The rest of the mixture consists of two or more filler materials, such as wollastanite, ceramic talc, fly ash, pearlite, and sand. Portland cement, Hydrocals (U.S. Gypsum), fiberglass, and terra...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... and Incoloy 800H in molten 34.42wt%NaCl-5.58wt%LiCl at 650 and 700 °C (1200 and 1290 °F) under nitrogen. Corrosion increases with increasing temperature. Source: Ref 77 Fig. 19 Schematic of nominal design of concentrating solar power system using molten salts. Solar energy is concentrated...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006297
EISBN: 978-1-62708-179-5
..., and gas-triggered systems. It discusses three main types of reclamation systems: wet, dry, and thermal. The article concludes with a description of both nonpermanent and permanent mold processes. References References 1. Principles of Sand Control , AFS Green Sand Committee 4-M, American...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... Fe 2 O 3 + 4 SO 2 2 SO 2 + O 2 ⇄ 2 SO 3 3 K 2 SO 4 + Fe 2 O 3 + 2 SO 3 ⇄ 2 K 3 Fe ( SO 4 ) 3 The greatest metal loss creates flat sites at the interface between the fly-ash-covered half...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003631
EISBN: 978-1-62708-182-5
.... These conditions can lead to segregation and concentration of the eroding particles. Examples of such rapid erosion are shown in Fig. 4 , 5 , 6 . Erosion attack can be quite localized, as shown by the polished zones on the tube supports from a steam boiler ( Fig. 3 ). Localized fly ash-laden gas flow...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004119
EISBN: 978-1-62708-184-9
... International Conference, Preprint No. 4269 , 2004 32. Thomas M.D.A. , “Review of the Effects of Fly Ash and Slag on Alkali-Aggregate Reactions in Concrete,” BRE Report 314, British Research Establishment , London, United Kingdom , 1996 33. Malvar L.J. , Cline G.D. , Burke...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006040
EISBN: 978-1-62708-172-6
... in which steel substrates are protected from corrosion by both protective coatings and ICCP systems. This criterion is really all about good weathering resistance, including good resistance to UV light (resistant to chalking), moisture vapor, salt fog, and wetting and drying cycles. Coatings with good...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003805
EISBN: 978-1-62708-183-2
... supplementary cementing materials or blended cements proven by testing to control the reaction. Supplementary cementing materials include fly ash; ground, granulated blast furnace slag; silica fume; and natural pozzolans. See the article “Environmental Performance of Concrete” in this Volume. Chloride...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003065
EISBN: 978-1-62708-200-6
... be added to flat glass to increase weatherability. The alumina content of container glass varies from 1 to 3%, but is virtually always present to increase durability (resistance to attack by the product being contained). Soda Ash Soda ash, or sodium carbonate (Na 2 CO 3 ), is the third major...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003684
EISBN: 978-1-62708-182-5
...; and over expansion joints in concrete slabs not to exceed 6 m (20 ft) on centerlines. A monolithic lining can be applied over acid-attacked masonry construction. The first step is the surface preparation of the brick. Fly ash and other contaminants should be removed by sandblasting or waterblasting...