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Silver gauzes and silver crystals
are used as catalysts in the selective oxidation
of methanol to formaldehyde.
By continuously optimizing the physical properties
of both silver crystals and silver gauzes
we supply our customers with innovative products
whose technological development quarantees
a high level of efficiency.
Silver crystals with low packing density and
silver gauzes with various mesh widths and
wire thicknesses widen our range of products
and ensure that we meet the specific needs
of each individual customer. Both partners,
Allgemeine and Ögussa, are specialized
in the production of catalysts: while Ögussa
produces silver gauzes corresponding to customer
requirements, Allgemeine produces silver crystals
in various grain sizes and structures.
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| Allgemeine and Öqussa provide
a competent and reliable refining service for all
used silver catalysts. Re-fining and transformation
into unused silver crystals and silver gauzes are
a full service package. Thus, we complete the cycle
of precious metals and ensure their efficient use
and economical re-use for their application in the
chemical industry. Our clients are offered reliability,
quality, competent technical services and consultation
in all the questions on precious metal products
and recycling as well as on logistics and technological
and innovative support.
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Silver
Crystals |
Specification |
Fractions
mm |
Packing
Density g/l |
Service |
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Ag
> 99,99%
Au 
10 µg/g
Bi
10 µg/g
Cu
25 µg/g
Fe
10 µg/g
Pb
10 µg/g
Pd
5 µg/g
Pt
5 µg/g
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0,15
- 0,35
0,35 - 0,50
0,50 - 1,00
0,50 - 2,00
1,00 - 2,00 |
3.800
3.300
2.300
2.400
2.000 |
Precious
metal refining |
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Gauzes |
Specification |
Lieferform |
Service |
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| mesh/cm2 |
64 |
| wire-Ø |
0,35mm |
| weight |
ca. 1650/m2 |
| fine silver |
99,99% |
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further mesh widths
and wire diameters as well as alloy compositions
on request
web : breadth and length according to customer specification
round shape : diameter according to customer specification
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precious metal refining |
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