White Corundum Electric Arc Furnace System Equipment With ISO 9001 Certification

Product Specification

1. Project Overview:
1.1 Equipment model: BGYL-2000KVA white corundum electric arc furnace system equipment;
1.2 Equipment Usage: Mainly used for smelting abrasives and refractory materials such as white corundum, fused alumina, mullite, etc;
1.3 Equipment form: The white corundum furnace is a fixed furnace, with a water-cooled furnace cover, skirt, top feeding, and external spray water cooling structure on the furnace wall.

2. System features
2.1 Structural forms of furnace top feeding, water-cooled furnace cover, and external spray water cooling on the furnace wall;
2.2 Each phase adopts an energy-saving short net composed of soft copper stranded wire, through wall copper bars, copper bars structural steel crossbars (trolley lifting type), etc;
2.3 Advanced and reliable variable frequency motor type electrode lifting automatic regulator: capable of automatic and manual operation.
2.4 The furnace shell is made of 20g boiler steel, 20mm thick, without reinforcement, and the furnace car adopts a circular structure; The bottom steel plate and skirt of the furnace car are made of 20mm thick steel plate;
2.5 The electrode clamp adopts a belt clamping method, which is reliable and has a long service life;
2.6 The electrode clamping adopts pneumatic driving method;
2.7 The primary voltage of the transformer is 35KV, and the secondary voltage is 200-130V in seven levels. On load voltage regulation, top line method;
2.8 The inlet of the cooling water system is equipped with pressure and water temperature monitoring, as well as sound and light alarms.
2.9 The parameters of the electric furnace are monitored and managed through a touch screen.
2.10 The material conveying adopts an ultra dense phase pneumatic conveying system.

3. System structure description and working principle
The white corundum furnace is a fixed straight tube water-cooled furnace with a fixed furnace cover, skirt, top loading, and furnace body platform. The external spray water cooling structure of the furnace wall is composed of the following mechanical parts:
a,     Furnace body;
b,     Furnace car;
c,     Secondary short network system;
d,     Fixed straight tube water-cooled furnace cover and skirt;
e,     Car controller;
f,     Water cooling system;
g,     Ultra dense phase conveying system
h,     Dust removal system
i,     electrical control system

Working principle
This device is based on electrical energy and utilizes the enormous heat released by the arc formed between the electrode and the furnace charge to achieve smelting. When current is introduced into the furnace through the electrode, an arc discharge phenomenon is triggered between the electrode end and the furnace charge. At this moment, the temperature in the arc area instantly soared to over 3000 ℃, and the powerful thermal energy quickly melted the furnace charge mainly made of industrial alumina powder. Under high temperature conditions, the furnace charge undergoes a series of complex physical and chemical changes, ultimately cooling and solidifying to form high-quality white corundum. During the smelting process, electrical energy is efficiently converted into thermal energy, providing the necessary high-temperature conditions for the formation of white corundum. Precise temperature control and stable arc environment ensure the consistency of the quality of white corundum products.

Technical Parameter:
Power specifications: Generally suitable for high-power power supply, such as HY2.8-4000KVA white corundum electric arc furnace equipment, AC 10kV power supply system, voltage range of 10kV ± 10%, 3 phases, frequency of 50 ± 0.5Hz; The voltage of the low-voltage distribution system is 380V/220V+10% -15%, with a frequency of 50 ± 0.5Hz. The powerful and stable power input meets the energy requirements for generating high temperatures in electric arc furnaces.
Electrode parameters: High quality graphite electrodes are usually selected, which have good conductivity and high temperature resistance. The diameter, length, and other dimensions of the electrode are determined according to the specific specifications and production process requirements of the electric arc furnace. For example, the common electrode diameter is 250mm, which can work stably in high temperature and high current environments, ensuring the continuous generation of the arc and the stable supply of heat inside the furnace.
Temperature control: This device can achieve extremely precise temperature control, quickly raising and maintaining the temperature inside the furnace above 2000 ℃, meeting the strict requirements for high temperature in white corundum smelting. Through advanced temperature monitoring and control systems, real-time adjustment of electrode current, voltage and other parameters ensures uniform and stable temperature inside the furnace, providing reliable guarantee for high-quality smelting of white corundum.
Output indicator: Taking HY2.8-4000KVA equipment as an example, the daily output of a single set of equipment can reach 25 tons. If calculated based on a continuous working system with 330 working days per year, the annual output is 8250 tons. To achieve an annual output of 30000 tons, four sets of such equipment are required. The output of electric arc furnace system equipment of different specifications varies, and reasonable selection can be made according to the production scale of the enterprise and market demand.
2.11 The dust removal system adopts a two-stage dust removal system of cyclone bag filter.