The characteristics of self-baking electrodes and their application in phosphorus-making electric furnaces
As an important conductive material, self-baking electrode plays a key role in metal smelting, electrochemistry and other fields.Especially in phosphorus-making electric furnaces, the application of self-baking electrodes not only improves production efficiency, but also significantly reduces production costs.This article will discuss in detail the characteristics of self-baking electrodes and their application in phosphorus-making electric furnaces.
Characteristics of self-baking electrodes
Raw materials and manufacturing processes
The self-baking electrode is mainly made of anthracite, coke, asphalt and tar as raw materials, calcined and kneaded at high temperature to make an electrode paste, and then sintered into the electrode shell.Its manufacturing process is relatively simple and low cost, so it is widely used in ferroalloy electric furnaces, calcium carbide furnaces, etc.The raw material requirements for electrode paste are strict. For example, anthracite coal needs to be calcined at a high temperature above 1200℃ to remove volatile components, the ash content of metallurgical coke needs to be less than 14%, and the indicators of asphalt and tar also need to meet specific requirements.
Physical and chemical properties
The self-baking electrode has the advantages of high mechanical strength, low coefficient of thermal expansion, low porosity, and low resistance coefficient.These characteristics enable the self-baking electrode to remain stable in a high temperature environment, effectively conduct current, and reduce energy loss.In addition, the sintering capacity of the self-baking electrode has the characteristics of self-adjustment, and the sintering speed can be automatically adjusted with the temperature changes in the operation of the electric furnace to ensure the stability and durability of the electrode.
Self-baking characteristics
The biggest feature of the self-baking electrode is its self-baking characteristics.During the operation of the electric furnace, the electrode paste gradually softens and melts as the temperature rises, and is coked at a higher temperature, and finally converted into a conductive electrode.In this process, the electrode shell not only bears the weight of the electrode, but also acts as a heating element to transmit current to the electrode paste, promoting the sintering and hardening of the electrode.
Application of self-baking electrode in phosphorus-making electric furnace
Reduce costs
In the phosphorus-making electric furnace, the application of self-baking electrodes has significantly reduced production costs.Compared with pre-sintered electrodes, the electrode consumption cost per unit product of self-baking electrodes is lower.This is mainly due to the simple manufacturing process of the self-baking electrode, the low cost of raw materials and its efficient use in the operation of the electric furnace.
Improve production efficiency
The stability and durability of the self-baking electrode ensure the efficient operation of the phosphorus-making electric furnace.During the operation of the electric furnace, the self-baking electrode can continuously conduct current and provide a stable energy input for the electric furnace.At the same time, its self-roasting characteristics enable the electrode to automatically adjust the sintering speed with the operation of the electric furnace, maintain the length of the working end of the electrode, and reduce the downtime caused by electrode fracture or excessive consumption.
Environmental advantage
The application of self-baking electrodes in phosphorus-making electric furnaces also has certain environmental protection advantages.Since the raw materials for self-baking electrodes are mainly renewable resources such as anthracite coal and coke, relatively little waste is generated in the production process.In addition, during the operation of the electric furnace, the sintering and hardening processes of the self-baking electrodes are completed inside the electric furnace, reducing the pollution of the external environment.
