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.
