Design of Refining Workshop for Iron and Alloy Electric Arc Furnace
1. Introduction
Iron and alloy electric arc furnace is one of the important units in steel smelting process, which is mainly used for refining and casting slab steel. The electric arc furnace smelting process involves the whole process of pretreatment, smelting and refining. The main products of the refining process are metal liquid. In order to complete the production task, a pollution-free and efficient electric arc furnace refining workshop should be designed.
2. Refining workshop powder system
2.1 Selection of electric arc furnace
When selecting an electric arc furnace, the particle size, bulk density and humidity of the furnace material should be considered. The furnace proportion should not be too high, and the air intake of the electric arc furnace should be large enough.
2.2 Refining cycle and electric arc
It is necessary to install two refining cycles, electric arc furnace and refining car. Electric arches should pay attention to the maintenance and repair of electric arches in time. Meanwhile, it is necessary to ensure that the materials delivered to the electric arc furnace are of good quality and meet the requirements of the process.
2.3 Grinding and screening system
For iron-based alloys, a grinding and screening system should be selected with applicable raw materials so as to ensure that the iron fines before refining are qualified, and to avoid clogging arc chunks in the electric arc and reduce slag production.
2.4 Dust control and removal system
To protect the environment, a dust removal and control system should be installed to remove the dust and smoke that are generated during the refining process of the electric arc furnace.
3. Refining process
3.1 Refining of electric arc furnace
Before the refining process of the electric arc furnace, the furnace should be preheated to the specified temperature, and then the material should be charged into the furnace, and the electric arc should be ignited to preheat the material and melt the metal dust.
3.2 Refining car refinement
The refined metal liquid from the electric arc furnace is heated up to the required temperature through the refining car, and then the chemical composition is adjusted and controlled according to the required composition.
4. Summary
The refining workshop of the electric arc furnace must be designed to meet all the safety requirements and requirements of the smelting process. It is necessary to take into account the selection of electric arc furnace, refining cycle, electric arc, grinding and screening system and dust control and removal system when designing the refining workshop. The refining process is carried out with the electric arc furnace and refining car, which should be strictly operated to ensure the product quality.
