Zirconia Alumina Electric Arc Furnace Equipment

Product Specification

Equipment Introduction
1.1 Equipment model: HY2.8-4000KVA zirconia alumina electric arc furnace equipment;
1.2 Equipment Usage: Mainly used for smelting abrasives and refractory materials such as zirconia corundum, fused alumina, mullite, etc.;
1.3 Equipment form: The zirconia corundum furnace adopts a fixed tube water-cooled furnace cover, top feeding, top blowing oxygen, and the outer walls of the upper and lower furnace bodies (lower furnace bodies) are cooled by spray water structure. The furnace body tilts and discharges materials, and is divided into left and right operation forms. The electrode lifting adopts a variable frequency motor or fully hydraulic lifting form, and can be controlled by a programmable regulator for automatic control.
1.4 Factory related parameters and energy medium conditions:
1.4.1 Power supply conditions:
a. AC 10/35 kV power supply system
b. Low voltage distribution system
Voltage 380V/220V

(2) Structural features:
2.1 Fixed tube or plate water-cooled furnace cover, top feeding, top blowing oxygen, upper and lower furnace shells, and spray water cooling structure outside the lower furnace wall;
2.2 Each phase adopts an energy-saving short net arranged in a spatial triangle, consisting of two large section water-cooled cables, compensators, through wall copper bars, copper steel composite conductive cross arms (trolley lifting type), etc. Short network impedance value ≤ 3m Ω, three-phase impedance imbalance ≤ 8%;
2.3 Advanced and reliable variable frequency motor type electrode lifting automatic regulator: capable of automatic and manual operation. Arc current setting range: 25% -150% lm. Electrode response time: 0.15S.
2.4 The tilting of the furnace body adopts hydraulic transmission and integrates block type hydraulic valves;
The 2.5 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 electrode automatic lifting regulator is controlled by a Siemens PLC programmable controller from Germany.
2.8 The primary voltage of the transformer is 10KV, and the secondary voltage is 220-110V. No load electric voltage regulation, top outlet method;
The cooling water system has pressure and water temperature monitoring, as well as sound and light alarms. To prevent power outages, users need to install high-level water tanks.
2.10 The parameters of the electric furnace are monitored and managed by industrial computers.

3. Mechanical Structure Description and Working Principle
The zirconia corundum furnace is a fixed straight tube water-cooled furnace cover, top loading, and top blowing oxygen. The furnace body platform is a fixed axis tilting method, and the external spray water cooling structure of the furnace wall is formed. Its mechanical part consists of the following parts:
a,      Upper and lower furnace bodies;
b,      Furnace tilting device;
c,      Short network system;
d,      Fixed straight tube water-cooled furnace cover (plate type);
e,      Electrode lifting device;
f,      Hydraulic system;
g,      Water cooling system;
h,      Pneumatic system;

4. Performance advantages
High purity product output: Through precise temperature control and optimized melting processes, impurities can be effectively reduced, ensuring high purity and stable quality of the produced zirconia corundum products. For example, under strict control of the reaction conditions inside the furnace, the zirconia content in the produced zirconia corundum products can be stabilized within the target range, with extremely low impurity content, meeting the strict requirements of high-end refractory materials, electronic ceramics and other industries for zirconia corundum quality, providing strong guarantees for the production of high-quality products. ​
Efficient melting efficiency: With strong arc heating capability and reasonable furnace structure design, the furnace material can be heated to melt and complete the melting reaction in a relatively short time, greatly improving production efficiency. Compared to traditional smelting equipment, the production of zirconia corundum per unit time has significantly increased, effectively meeting the growing market demand for zirconia corundum and laying the foundation for enterprises to improve production efficiency. ​
Flexible process adjustment: Various melting process parameters such as electrode current, voltage, arc length, melting time, and slag composition can be flexibly adjusted according to different production needs and raw material characteristics. Operators only need to input the corresponding parameters on the control interface, and the equipment can quickly respond and automatically adjust to the optimal working state, realizing customized production of different specifications of zirconia corundum products, adapting to diverse market demands, and providing broad space for enterprises to expand their business. ​
Energy saving and environmental protection features: The design fully considers energy utilization efficiency, adopts advanced power technology and efficient furnace insulation measures, effectively reduces energy loss during transmission and conversion, and lowers energy consumption per unit product. At the same time, equipped with a comprehensive smoke and dust purification system, it can efficiently collect and treat harmful smoke and dust generated during the smelting process, greatly reducing environmental pollution and meeting the requirements of modern industrial green and sustainable development. It helps enterprises reduce operating costs while establishing a good social image.