For the consumption of graphite electrode in smelting, the first thing to be solved is the fracture of the joint, and the second thing to be considered is the oxidation resistance and thermal shock resistance. How to reduce the consumption of electrodes is not only the technology of carbon manufacturers, but also the important work for smelting manufacturers to cooperate with electric furnaces.

First of all, we should understand the development of smelting industry, smelting process, electric furnace and operation technology, and then targeted technical research, scientific organization of production, the implementation of effective technical services.To further achieve the purpose of matching production and use. The following we mainly from the smelting production to be discussed and summarized.

(1) New electric furnace technology reduces energy consumption

The establishment of large UHP and LF electric furnace has laid a solid foundation for the scale development of iron and steel industry. High productivity and low energy consumption are the characteristics of the new smelting technology, and the single consumption of electrodes is decreasing.

(2) Consumption reduction of hot charge smelting process

The hot charge of molten iron effectively shortens the smelting cycle, reduces the consumption of electric energy, chemical energy and various materials, and reduces the single consumption and demand of graphite electrode.

The new electric furnace has perfect supporting facilities. The selection of graphite electrodes by the introduced technology prevents the problem of having a big horse and a small horse and a big cart, which is a challenge to the domestic electrodes. Impedance furnace operation and automatic monitoring system in the furnace have played a great role in the control and effective use of electrodes and the reduction of losses. The fracture rate of electrodes in large electric furnaces will not exceed 2%. The transformation of the old electric furnace is also equipped with necessary facilities, and the choice of power supply equipment is mostly upper limit, thus the emergence of quasi-UHP and quasi-HP electric furnaces, virtually raising the physical quality requirements of graphite electrodes of the same grade.

(3)Strictly control the energy consumption of the transmission system

Effectively prevent electrode redness and reactive power oxidation consumption and fracture in the furnace, strictly control the power supply system is the premise to ensure normal smelting, different types of steel and smelting process have corresponding arc voltage and current gear, to prevent excessive current fluctuation and strictly control the peak working time of current.

(4) Consumption reduction in standard use

Electrode connection technology, in principle, large specifications of electrodes must require under the furnace connection, must be strict requirements or on-site guide users on electrode storage and storage and electrode connection. When connecting, avoid collision resulting in thread fragments and must keep the upper electrode always vertical state; When it is uniformly screwed to 8~10MM, it is locked with inertia, and then it is screwed to the point where the pre-tightening torque is applied with the long arm wrench until it cannot be screwed. The slotted electrode cannot be put on the furnace; If the phase sequence problem and the connection is good, it is best not to play fixed dowel. Avoid breaking and shedding losses.

In addition, in order to avoid and reduce the direct loss of electrodes, when the flame is high, the top section should be timely connected to the high electrode, to prevent the damage of the wire buckle; When sliding electrode must have soft connection, avoid hard collision; The controller and the electrode must be kept vertical to prevent scratching the electrode with the small furnace cover; Avoid oxygen gun directly to the lower electrode in the furnace.