Description

A further development of the heating system with a heating element shielded with heat-conducting ceramics is heating elements installation inside a furnace roof refractory lining layer.
The present technical solution enables to solve the following problems:

exclude gas corrosion of metallic heating elements;

significantly decrease a deposition on the roof reflective surface;

reduce temperature on the heating elements surface and keep thermal effectiveness of the heating system at very high level;

replace heating elements without cooling of a holding furnace.



Positive effect is achieved by the following::

optimization and redistribution of thermal streams inside the heating system and in the furnace chamber;

furnace roof refurbishment;

application of high-temperature resistance alloys for heating elements (in perspective ceramic heating elements);

application of power supply devices with PID controllers — control of heating element power.



Realization of the above technical solutions and procedures provides the following:

increase of the furnace thermal efficiency by twice, which will lead to the increase of the melting-casting equipment output and reduction of specific consumption of electric energy;

increase of reliability of the furnace heating system operation, which will reduce expenses on its repairs.