Effect of the electrical conductivity of electrode paste on the smelting efficiency of ore heat furnace
As an important smelting equipment, mineral heat furnaces are widely used in iron and steel, non-ferrous metals and other industries.In a mine heating furnace, the electrode paste is located between the electrode and the charge, which serves as a connection between the electrode and the charge.The electrical conductivity of the electrode paste has a vital influence on the smelting efficiency of the ore heat furnace.
The main functions of electrode paste are conductivity, heat transfer and protection of electrodes.First of all, the electrode paste has good electrical conductivity and can transmit current from the electrode to the charge, so that the smelting reaction in the ore heat furnace can proceed smoothly.The stable transmission of current is the basis of the smelting process, and the electrical conductivity of the electrode paste directly determines the efficiency of current transmission.If the electrical conductivity of the electrode paste is not good, the current transmission will be blocked and the smelting reaction speed will be slowed down, thereby affecting the smelting efficiency.
Secondly, the electrical conductivity of the electrode paste also affects the thermal efficiency of the mine heating furnace.Thermal efficiency refers to the proportion of useful energy that can be converted into during a chemical reaction, and it is an important indicator to measure the degree of energy utilization during the reaction.Through good electrical conductivity, the electrode paste can ensure that the heat generated during the transmission of current is effectively utilized and heat loss is reduced.If the electrical conductivity of the electrode paste is poor, it will lead to increased heat loss and reduced thermal efficiency, thereby affecting the smelting efficiency and economic benefits.
In addition, the electrical conductivity of the electrode paste is also closely related to its high temperature resistance and adhesion properties.The electrode paste needs to maintain stable electrical conductivity at continuous high temperature, which requires it to have good high temperature resistance.At the same time, the electrode paste needs to be firmly bonded to the electrode and not easy to fall off to ensure the stable transmission of current.The improvement of these properties helps to improve the electrical conductivity of the electrode paste, thereby improving the smelting efficiency of the ore heat furnace.
In the production process of electrode paste, the selection and matching of raw materials have an important influence on its electrical conductivity.High-quality raw materials and reasonable proportions can improve the electrical conductivity of the electrode paste.For example, the use of raw materials such as electro-calcined anthracite, calcined petroleum coke and modified coal asphalt can significantly improve the electrical conductivity and structural stability of the electrode paste compared to traditional general calcined anthracite, metallurgical coke powder and medium-temperature coal asphalt.
In addition to the choice of raw materials, the production process of electrode paste also has an important impact on its electrical conductivity.By optimizing the production process, such as improving the softening point of coal asphalt, the electrical conductivity and heat resistance of the electrode paste can be improved.In addition, the detection and control of the particle size distribution, volatile content, resistivity and other indicators of the electrode paste is also a key link to ensure the stability of its electrical conductivity.
In summary, the electrical conductivity of the electrode paste has a vital influence on the smelting efficiency of the ore heat furnace.Good electrical conductivity can ensure stable current transmission, improve thermal efficiency and reduce heat loss, thereby improving smelting efficiency and economic benefits.Therefore, in the production and use process of electrode paste, attention should be paid to improving its electrical conductivity, by optimizing the selection, ratio and production process of raw materials, as well as strengthening quality inspection and control, to ensure that the quality and performance of electrode paste meet the needs of smelting.
