Deprecated: mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. in /home/pokerhea/ on line 150 Bottom electrode » Private Enterprise Firm ROUD

Water cooled elements
Water cooled elements with protective cover are elaborated. Cover promotes decrease of panel oxidation, crack formation and heat loss.

EAF charge
A new technology base and approptiate equipment for carbon-thermal reduction of iron containing technogeny wastes is elaborated in order to utilize these wastes in capacity of part of the EAF charge.

EAF off gas suction elbow
EAF off gas suction elbow with a system of primary dust removal is elaborated. It provides a possibility of metal charge burning decrease due to partial return of heavy particles into the EAF.
Bottom electrode

A structure of area of connection
steel-copper, kh100, kh20000

An example of bottom electrode
(Limit of fluidity – 190H/mm2 Temporal resistance – 320H/mm2)


In the world significant interest to arc furnaces of a direct current (DC EAF), especially in a machine-building complex is shown. Despite of essential advantages of DC EAF in front of furnaces of an alternating current, there are also serious lacks. One of them is low durability bottom electrode and adjoining refractory. In DC EAF, as a rule, use bottom electrodes of rod type with the down copper water-cooled part to which the top steel part contacting with the bath is attached. During the heat under action of a heat flux from a bath (qbath) and heat of Joule (qJ) the stationary condition at which the liquid and solid phases of a steel part of an electrode are in thermodynamic balance (fig. 1) is established. Influence of heat of Joule for operating conditions of the majority of furnaces of small and average capacity (force of a current up to 20 kА) is insignificant (fig.2). The basic influence on a thermal condition of the bottom electrode defined by thickness of not fused steel part, renders speed of melt motion under action of Lorentz force and thermal convection (fig. 3).

Our Company develops constructive decisions of the bottom electrode with reference to concrete conditions of the Customer in view of own experimental and settlement data to provide comprehensible characteristics at the minimal capital and operational expenses; carries out supervision at installation and put of delivered products in operation.

Fig.1- Scheme of bottom electrode thermal state.

Fig.2 – Part of Joule heat (β) in a heat balance of bottom
electrode depending on current force (I, kА).

Fig.3 – Length of solid steel part of bottom electrode (Н,m)
versus melt velosity (w, м/с) at current force 12kА.

Визитка ЧПФ «РОУД » на портале Металл РусОпт.ру