Performance characteristics and selection points of electrode paste for ferroalloy furnace

In the production process of ferroalloy furnaces, it is necessary to rely on electrodes to introduce strong current into the furnace to meet the needs of high-temperature smelting.Electrode paste plays a vital role as a conductive material for electric furnace equipment such as ferroalloy furnaces.This article will discuss the performance characteristics and selection points of electrode paste for ferroalloy furnace, with a view to providing reference for related industries.

Performance characteristics of electrode paste

Electrical conductivity：

As a conductive material, electrode paste must have good electrical conductivity.This can not only ensure that the current enters the furnace smoothly through the electrodes, but also reduce energy loss and improve smelting efficiency.

High temperature resistance：

During the working process of the ferroalloy furnace, the temperature in the furnace is extremely high, and the electrode paste must be able to withstand this high temperature environment.Common electrode pastes such as silicon carbide electrode pastes, perovskite electrode pastes and calcium carbide electrode pastes have excellent high temperature resistance and can work normally at continuous arc light high temperatures above 3000 degrees.

Antioxidant properties：

At high temperatures, the electrode paste can easily react with oxygen in the air, resulting in degraded electrode performance.Therefore, the electrode paste must have good oxidation resistance to extend the service life of the electrode.

Mechanical strength：

The mechanical strength of the electrode paste includes compressive strength, flexural strength and tensile strength.These strength indicators determine the stability and durability of the electrode paste during use.Factors such as the composition of raw materials, particle size and ratio of electrode paste, and the content of coal asphalt will all affect its mechanical strength.

Self-roasting performance：

During the use of the electrode paste, it will undergo stages such as softening, melting and roasting, and eventually become a conductive carbon electrode.This self-roasting performance allows the electrode paste to adapt to different smelting conditions and maintain stable electrode performance.

Selection points of electrode paste

Choose according to the type of furnace body and the conditions of use：

Different types of ferroalloy furnaces have different requirements for electrode paste.When choosing electrode paste, it is necessary to consider comprehensively according to the type of furnace body, smelting temperature, smelting materials and other factors to ensure that the electrode paste can meet the normal operation and long life requirements of the furnace body.

Choose electrode paste with good quality and well-known brand：

The quality of the electrode paste directly affects the smelting efficiency and product quality.Therefore, when choosing electrode pastes, priority needs to be given to products with good quality and well-known brands to avoid problems such as sintering and aging of electrode pastes caused by poor quality of electrode pastes.

Consider the cost and environmental protection of electrode paste：

With the continuous strengthening of environmental protection policies, high-quality, high-price, and environmentally friendly electrode pastes will become an inevitable trend of future development.When choosing electrode paste, it is necessary to consider its cost and environmental protection comprehensively, and choose products that meet its own needs and policy requirements.

Pay attention to the particle size of the electrode paste：

The particle size of the electrode paste has a great impact on its use effect.If the particle size is too large, it is easy to malfunction the electrode paste suspension, and if the particle size is too small, it is easy to cause the phenomenon of spraying paste.Therefore, when choosing an electrode paste, it is necessary to pay attention to its particle size distribution to ensure that the particle size is moderate.

Pay attention to the sintering temperature of the electrode paste：

The sintering temperature of the electrode paste has a great impact on its mechanical strength and service life.When choosing an electrode paste, it is necessary to understand its sintering temperature range to ensure that stable mechanical strength can be maintained during use.