Plasma arc furnaces of direct current

Plasma arc furnaces of direct current(PDPPT) - the newest generation of units used for melting and endurance:

• Steels of any brands
• Cast irons (including synthetic and cast irons on the basis of Fe-C-Al).
• Aluminium and alloys on its basis (including the slags containing 30-45 % of metal aluminium, with liberation to 98 % of aluminium from slags)
• Copper and alloys on its basis, any waste of copper (in blends about 100 % of shaving, an exit suitable until 98,5 % are allowed).
• Various ferroalloys, including Fe titan, Fe chrome, a Fe vanadium, a low-carbonaceous and metal Fe manganese, a silicone calcium, calcium carbide, and also the slag waste which is forming by production of ferroalloys on standard furnaces.

Advantages of use PDPPT:

• High efficiency, time of melting of 15-35 minutes.
• Power savings and high-quality electricity consumption, specific expense of the electric power of 360-880 kWh/t., depending on an alloy.
• High environmental friendliness PDPPT.
• Improvement of working conditions and safety measures.
• Wide range of melted metals and alloys.
• Big profitability when processing a firm waste, slag dumps, with extraction from them valuable elements.
• Low waste of alloying elements.
• High quality of melted metals and alloys.
• Sharp decrease (to 80 %) contents of gases in the alloys, caused by ionic conductivity under the influence of a direct current.
• Loading and melting possibility slags in volume from 20 % to 130 % from nominal capacity of the furnace, with use of different types of a lining.
• Lack of harmful consequences for a furnace condition at any operating modes and emergency shutdowns. 

For convenience in work, PDPPTapply in the form of the installation including two furnaces and one power supply.

Installation structure:

• One or two PDPPT(depending on the order) with a lining and one power supply
• Hydrostation
• Water block
• Control panel
• Templates for stuffing of a bath and the furnace arch in fire-resistant weight

Also the enterprise is equipped with the centrifugal machines, allowing to let out to 3500 tons of suitable castings in a year. 

Machines of mechanical shop allow to make a machining of received preparations, and the high-precision equipment of laboratory allows to carry out complete control of quality of preparations.

Table 1. Overall dimensions and mass of furnaces

Table 2. Main characteristics of furnaces