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beryl

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Published: 01 July 2009
Fig. 20.4 Design sequence of four different methods that have been used to clad beryllium billets for rolling. The symbol “s/s” refers to stainless steel. More
Image
Published: 01 July 2009
Fig. 21.5 Impact behavior of unnotched Charpy specimens obtained from hot upset beryllium sheet. Δ, as-ground; •, ground and etched to 0.05 mm (0.002 in.) depth; □, shot peened. Source: Beitscher 1979 More
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Published: 01 July 2009
Fig. 6.1 Concentration of beryl from pegmatitic gangues and low-grade deposits. Source: Lamb and Banning 1945 More
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Published: 01 July 2009
Fig. 6.2 Hydrofluoric acid activation of ores for beneficiation of beryl. Source: Kennedy and O’Meara 1947 More
Image
Published: 01 July 2009
Fig. 7.2 Beryllium extraction from beryl and bertrandite ores at the Delta Plant in Utah by Brush Resources, Inc. Note: CCD thickeners are used in the countercurrent decantation (CCD) process to separate sludge and concentrate from solution. More
Image
Published: 01 December 1984
Figure 1-24 Crossed polarized light was used to reveal the macrostructure of this beryllium weldment. (Courtesy of R. D. Buchheit, Battelle-Columbus Laboratories.) More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230019
EISBN: 978-1-62708-298-3
... Abstract Beryllium is the 44th most abundant element on Earth, with an estimated concentration of six parts per million in the Earth’s crust. It is found in various forms in more than 100 minerals, two of which, beryl and bertrandite, account for most of the beryllium produced throughout...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230065
EISBN: 978-1-62708-298-3
... Abstract This chapter describes some of the processes used to concentrate beryllium-rich minerals from ores. It discusses the flotation of bertrandite and phenacite from calcite, mica, fluorspar, and quartz-containing ores, the flotation of beryl from pegmatitic gangues and low-grade deposits...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230071
EISBN: 978-1-62708-298-3
... provides information on electrolytic extraction and the use of electrorefining. beryllium copaux-kawecki fluoride extraction degussa extraction electrolytic extraction electrorefining kjellgren-sawyer sulfate extraction solvent extraction 7.1 Extraction from Beryl Because of its...
Image
Published: 01 July 2009
Fig. 17.16 Analog recording of the load-strain response of a vacuum hot-pressed beryllium specimen transverse to the pressing direction. Serrations (Portevin-Le Chatelier effect) can be seen along the lower-yield plateau. Source: Goldberg et al. 1982 More
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Published: 01 July 2009
Fig. 19.7 Effect of compacting pressure on the sintered densities of −200-mesh beryllium powder compacts. Source: Hausner and Pinto 1949 More
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Published: 01 July 2009
Fig. 20.15 Influence of forging combinations on mechanical properties of forged beryllium cones. Source: Glenn and Hayes 1969 More
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Published: 01 July 2009
Fig. 27.4 McCabe-Thiele diagram for diethyl hexyl phosphoric acid and 1 g/L of beryllium at pH 1.0. Concentration of Be is in aqueous solution on x -axis and in organic solution on y -axis. Source: Emly 1994 More
Image
Published: 01 July 2009
Fig. 4.34 Electrical resistivity as a function of temperature of normal-purity beryllium block. Source: Pinto 1979b More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.9781627082983
EISBN: 978-1-62708-298-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230007
EISBN: 978-1-62708-298-3
... update on the primary beryllium producers throughout the world. beryllium 2.1 Early History In its purest form, beryl was known and treasured in ancient times as a precious stone. It was found in the oldest known Smaragd mines, which have been traced back to approximately 1650 B.C...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230523
EISBN: 978-1-62708-298-3
... Ltd. , London , p 743 Bayliss R.K. , and Derry R. , 1963 . “ Further Studies of the Breakdown of Beryl and Beryl Concentrates by Fusion Methods ,” National Chemical Laboratory Beat T.G. , 2005 . Lawrence Livermore National Laboratory , Livermore, CA , private...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230107
EISBN: 978-1-62708-298-3
... attacks beryl, but, because beryllium in this form is considered nontoxic, the method does not thereby suffer. 9.2 Quantitative Procedures for Beryllium Determination 9.2.1 Gravimetric Methods Gravimetric methods are employed where accuracy takes precedence over speed and ease of analysis...
Book Chapter

By Kenneth A. Walsh
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230001
EISBN: 978-1-62708-298-3
... High strength and nonsparking characteristics Source: Lide 1998 Its low density, high reactivity, and high melting point along with its occurrence in the form of a very stable beryl ore, which contains approximately 5% Be, make its extraction difficult. The electrowinning of beryllium from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230093
EISBN: 978-1-62708-298-3
...  NH 4 HF 2 + Be = ( NH 4 ) 2 BeF 4 + H 2 The metal is also dissolved in an aqueous solution of sodium or potassium hydroxide, with the generation of hydrogen and the formation of a beryllate: (Eq 8.2) 2  NaOH + Be = Na 2 BeO...