Stirring plants for aluminum (EMS)

Electromagnetic stirrer

The production of aluminum consists in a production process that is divided into several very complex stages and the electromagnetic stirrer has become a fundamental element to accelerate the reactions during the melting phases. Auril & Gond supplies a complete system that can be mounted either below or to the side of the furnace. The movement of the metal is created by the interconnection between the magnetic field generated by applying electrical energy to the coils, and the molten bath. A movement on the molten aluminum by using an electromagnetic stirring (EMS) is a solution that brings significant advantages including, the elimination of mechanical contact with the molten liquid while improving key parameters such as melting speed and energy efficiency.

Thanks to fluid dynamics computation software, we carry out an analysis of the motions generated by the stirrer on the molten bath, which allow us to provide the customer with a system suitable for his needs.
Among the strengths of our system we find a very low maintenance, almost negligible, and the possibility of use on all conductive liquids

Auril&Gond stirrer can be mounted on different types of furnaces including melting furnaces, holding furnaces or chamber furnaces and can be supplied with both air or water cooling solutions according to the needs of the customer and the production plant.
In order to install the EMS it is necessary to have a non-magnetic steel "window" to ensure the mixing of the material and a space for the installation of the stirrer itself.

Auril & Gond stands out for the great reliability and quality of a made in Italy product and for a team able to follow the customer from the design phase to the final commissioning phase.

AVERAGE ROI IS LESS THAN ONE YEAR FROM COMMISSIONING

STRENGTHS / ADVANTAGES

Energy savings of up to 15%

Thanks to the reduction of heat losses and the improvement of heat transfer in the bath, energy savings are obtained and can reach 15% less.

  • Longer life of the refractory material
  • Possibility of installation on all types of furnaces both below and on the side
  • Very low maintenance costs
  • NO moving parts and NO contact with liquid bath
  • Possibility of mixing throughout the refining cycle and possibility of reversing the rotation
RESULTS
Increase in productivity and reduction of the costs
The life of the furnace is increased. It is not necessary to use the fires at high temperatures for long periods and the opening of the doors is drastically reduced, ensuring greater heat exchange and higher productivity.
Auril&Gond stirrer for aluminum reduces gas consumption by about 15% thanks to mixing with consequent homogenization of the temperature.
With the use of the electromagnetic stirrer we have a drastic reduction in the temperature difference between the upper and lower part of the molten bath which is less than 5° C after a few minutes from turning on the stirrer. This difference without the use of the stirrer is normally between 50 and 80° C. This therefore also guarantees an increase in the dissolution rate of the alloys in terms of time.
With the use of the electromagnetic stirrer we have a drastic reduction in the temperature difference between the upper and lower part of the molten bath which is less than 5° C after a few minutes from turning on the stirrer. This difference without the use of the stirrer is normally between 50 and 80° C. This therefore also guarantees an increase in the dissolution rate of the alloys in terms of time.
INVERTER CABINET

Our inverter switchboards are equipped with a sliding system that allows easy installation / maintenance of the main IGBT module. They are composed of static converters at impressed voltage with IGBT modules, digital regulation with vector control, capacitor bank, microprocessor control unit and auxiliary circuits (power supplies and transducers). The inverter is specifically designed for critical applications and is designed with the latest and proven technologies, in a modular design for easy installation and maintenance. All Power components are sized to ensure operation of the converter even in the most severe service and load conditions. The power components (diodes and IGBTs) are cooled by forced ventilation. The static converter is available in different sizes up to a maximum power of 4 MW in the case of 8 modules in parallel.

SLIDING SYSTEM INSTALLATION
A wheeled roll-out chart facilitates drive installation and removal.
The drive supports a comprensive range of network protocols to easy integration to customer architecture EtherNet /IP, PROFINET, PROFIBUS.
Prevent unplanned downtime with predictive diagnostic and built in protection feutures to help guard your investment.
Commercial drive easy to find on the market avoiding long stops of production and high costs of supply.
Local presence on every country. Service and procurement of componenents directly from manufacturer to end customer.
Our drives are designed to run with unbalanced loads i.e linear EMS.
TRANSFORMER

Our transformers are manufactured using carefully selected materials that enable us to provide a high quality product by offering tailor-made solutions that meet every customer’s needs. The transformers are used to obtain the IT earthing system which allows to reduce the supply harmonic current content that can effect the electrical power quality, improving the continuity of service by reducing the fault current and increase the power factor.