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Revised Application technology powder production-grinding of thermoplastics in the Rubber & Plastics sector

Powder production-Grinding of thermoplastics with gases

Reduce grinding time and improve quality

GAS APPLICATION

In order to grind tough and elastic materials with a high throughput into fine powder, an efficient cryogenic cold grinding system is required. The feed material must firstly be cooled with a suitable refrigerant such as e.g. liquid nitrogen to a defined temperature usually below the glass transition or softening temperature to cool. On the other hand, the duration of the grinding process should be kept as short as possible, because the material to be ground, which is heated again by the energy input of the grinding tools, should not be deformed but be grinded.

 

The objectives of the cryogenic milling of thermoplastics and elastomers are:

a high throughput to obtain low production costs
usually a large proportion of fine or finest material, as this increases the product value
a low specific energy requirement to save electricity costs
the avoidance of thermal damages
to prevent the risk of dust explosions and fires during grinding

 

MESSER SOLUTION
The Messer Group operates a highly specialized test facility, which offers the opportunity to profit from process developments, to estimate production costs or to produce sample batches. Qualified sample grinding is carried out using liquid nitrogen.

All grinding parameters, such as throughput, electricity and nitrogen requirements as well as the particle size distribution are measured, evaluated and made available to the customer. The results obtained can be transferred to large-scale productions.

In addition to pure grinding sample production, an estimate of the production costs under production conditions and a comparison to other grinding processes can be made. Even existing mills at the customer’s site can be optimized. Granulate coolers, nitrogen control valves and temperature control can be provided for carrying out tests on these plants on site.

Revised Customer process powder production-grinding of thermoplastics in the Rubber & Plastics sector

Powder production-Grinding of thermoplastics

Grinding tough and elastic materials with a high throughput into fine powder

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Făcând click pe acest buton acceptați politica GDPR a Messer Group. Acest acord poate fi revocat oricând.