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Chip deoiling or centrifugation
WHY CREATE A DE-OILING OR CENTRIFUGATION SYSTEM

Those who handle swarf in factories have one extra problem to deal with and the solution is often not simple. Govoni aims to transform swarf from an expensive and risky daily problem into a precious, cost-effective, environmentally-friendly raw material.
De-oiling or centrifugation systems for swarf are becoming increasingly important due to new EU directives about ecological aspects at the workplace and about disposal of hazardous wastes accompanied by strict sanctions.
New regulations stipulate that swarf is considered to be a secondary raw material only if residual coolant is 2% or less than its own weight.
When the scrapper collects swarf soaked in oil or emulsion, it has a value much less than the market average because the weight loss that the swarf will undergo later after de-oiling is taken into consideration, as well as the costs incurred for this operation, in addition to the risk of handling harmful pollutants such as oil or emulsion.

It has been shown that on average, an oil quantity equal to about 7% of the weight of the swarf can be retrieved, this means that for an average flow of 100 kg/h of material, working in 3 shifts, it is possible to recover a good 168 kg of oil a day. Within a year (220 days) it is then possible to retrieve about 40,000 kg of oil, with an estimated annual savings of as much as 200,000 for oil, 5/kg.
Dry swarf is therefore more appreciated and valued by swarf scrappers. In addition, de-oiling of the swarf allows for cost savings thanks to recovery of the coolant and reduction of disposal of special waste such as oil or emulsion.
Deoiling system for steel chips installed complete with structure for inspection and maintenance.
Deoiling system for steel chips installed complete with structure for inspection and maintenance.
Centrifugation system for AVP chips, complete with automatic filling system for chip collection pit.
Centrifugation system for AVP chips, complete with automatic filling system for chip collection pit.
Deoiling system for aluminium chips complete with box dumper, collecting hopper, shredder and centrifuge.
Deoiling system for aluminium chips complete with box dumper, collecting hopper, shredder and centrifuge.
ADVANTAGES


  • EFFICIENCY: the vertical manifold that precedes the centrifuge allows for a first step of drainage of the oil due to gravity, causing less strain on the centrifuge and longer intervals between its maintenance

  • ECOLOGY: improves the work environment at the facility thanks to the disappearance of residual oil and greasy swarf

  • SAFETY: it prevents operators from being in contact with substances known to be harmful to human health by inhalation or contact

  • COST SAVINGS: possibility of selling the dry swarf as "secondary raw material" and not as "waste" resulting in higher monetary evaluation of the material by scrapper

  • OIL RECOVERY: it is possible to recover oil up to 7% of the weight of the swarf

  • COMPLIANCE: the laws on safety and hygiene at work are respected (OSH Directives, CEI and UNI regulations) and laws governing the disposal of recyclable materials are complied with

  • ENVIRONMENTAL COMPLIANCE: materials that are highly pollutant for the environment are not sent for recycling.



SPECIFICATIONS
The swarf is placed in the hopper 1 by an automatic tipping system 2 or from containers unloaded by a forklift 3 or directly from the vertical manifold at the end 4 of a centralized system; it is then channelled through horizontal and vertical manifolds 5 to the shredder above the centrifuge 7 in a continuous loop, while the coolant is recovered and then filtered through appropriate filtration systems such as, for example, paper filters 8 or those with metal bars 9.
One of the unique benefits of the Govoni screw conveyor is being able to avoid using the shredder 6 in the majority of cases, due to the crushing generated by the movement of the screw itself.
The vertical screw manifold also allows for an initial drainage of the swarf before entering the centrifuge, thus facilitating the de-oiling process.
On request the system can be equipped with a separator or vibrating screen, an automatic filling system, a container or silo, according to needs.

INFORMATION REQUEST
2017 Govoni Handling Systems S.r.l. - Registered office: Via Bologna 21, 44042 Cento (FE)
Share Capital: 97,500.00 fully paid up - VAT code: 01298160381 - Company Register of FE and Tax Code: 01298160381