Prix FOB
Obtenir le dernier prix|
1 Metric Ton Minimum Order
Pays:
China
N ° de modèle:
-
Prix FOB:
Localité:
China
Prix de commande minimale:
-
Commande minimale:
1 Metric Ton
Packaging Detail:
100kg per steel drum.
Heure de livraison:
within 15-30 days depends on quantity.
Capacité de Fournir:
2000 Metric Ton per Month
Payment Type:
L/C, T/T
Groupe de produits :
Personne àcontacter Mr. Wang
No.28,Zhengzhou Road, Development area, Rizhao, Shandong
Description:
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Cerium Metal is silver lump. It is used as
additive for special steel, Non-ferric Alloy, Hydrogen Storage
Alloy, also reducer for making other Rare Earth
metal.
Cerium is a chemical element with symbol Ce and
atomic number *8. It is a soft, silvery, ductile metal which easily
oxidizes in air. Cerium was named after the dwarf planet Ceres
(itself named for the Roman goddess of agriculture). Cerium is the
most abundant of the rare earth elements, making up about 0.***6%
of the Earth's crust by weight. It is found in a number of
minerals, the most important being monazite and bastnasite.
Commercial applications of cerium are numerous. They include
catalysts, additives to fuel to reduce emissions and to glass and
enamels to change their color. Cerium oxide is an important
component of glass polishing powders and phosphors used in screens
and fluorescent lamps. It is also used in the "flint" (actually
ferrocerium) of lighters.
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Physical
properties:
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Cerium is a silvery metal, belonging to the
lanthanide group. It resembles iron in color and luster, but is
soft, and both malleable and ductile. Cerium has the third-longest
liquid range of any element: ***8 C° (**5 °C to ***3 °C) or ***6
F° (***3 °F to ***9 °F). (Only neptunium and thorium have longer
liquid ranges.)
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Chemical
properties:
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Cerium metal tarnishes slowly in air and burns
readily at **0 °C to form cerium(IV) oxide:
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   Ce +
O2→CeO2
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Cerium is quite electropositive and reacts
slowly with cold water and quite quickly with hot water to form
cerium hydroxide:
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   2 Ce (s) + 6 H2O
(l)→2
Ce(OH)3 (aq) + 3 H2 (g)
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Cerium metal reacts with all the
halogens:
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   2 Ce (s) + 3 F2
(g)→2
CeF3 (s) [white]
   2 Ce (s) + 3 Cl2
(g)→2
CeCl3 (s) [white]
   2 Ce (s) + 3 Br2
(g)→2
CeBr3 (s) [white]
   2 Ce (s) + 3 I2
(g)→2
CeI3 (s) [yellow]
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Cerium dissolves readily in dilute sulfuric acid
to form solutions containing the colorless Ce(III) ions, which
exist as a [Ce(OH2)9]3+ complexes:[8]
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   2 Ce (s) + 3 H2SO4
(aq)→2
Ce3+ (aq) + 3 SO2−
   4 (aq) + 3 H2
(g)
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| Code | TREM | Ce/TREM | La/TREM | Pr/TREM | Nd/TREM | Sm/TREM | Fe | Mg | Ca |
|  |  | min % | max % | max % | |||||
| 2N5 | *9 | *9.5 | 0.3 | 0.*3 | 0.*3 | 0.*3 | 0.2 | 0.*2 | 0.*2 |
| 3N | *9 | *9.9 | 0.*5 | 0.*1 | 0.*1 | 0.**5 | 0.2 | 0.*2 | 0.*2 |
| 3N5 | *9 | *9.*5 | 0.*1 | 0.*1 | 0.*1 | 0.**5 | 0.2 | 0.*1 | 0.*1 |
| 4N | *9 | *9.*9 | Available upon request | ||||||
| 5N | *9 | *9.**9 | Available upon request | ||||||
| 6N | *9 | *9.***9 | Available upon request | ||||||
| Pays: | China |
| N ° de modèle: | - |
| Prix FOB: | Obtenir le dernier prix |
| Localité: | China |
| Prix de commande minimale: | - |
| Commande minimale: | 1 Metric Ton |
| Packaging Detail: | 100kg per steel drum. |
| Heure de livraison: | within 15-30 days depends on quantity. |
| Capacité de Fournir: | 2000 Metric Ton per Month |
| Payment Type: | L/C, T/T |
| Groupe de produits : | Rare earth |
