Microwave calcination α-alumina push plate kiln equipment, microwave high-temperature equipment only from Zhongsheng

I. Advantages of Microwave Calcination Technology:

Using microwave heating technology to dry and sinter high-purity nano α-alumina;

1. Conventional electric heating equipment requires long drying and sintering times, slow heating rates, and is prone to contaminating the raw materials during heating or high-temperature processes, resulting in low product quality and substandard purity. In contrast, microwave drying and high-temperature sintering equipment enables rapid heating for high-purity alumina drying and sintering. Microwave drying typically achieves its purpose within 20 minutes, and heating to ultra-high temperatures above 1450°C takes only one-fifth of the time required by traditional heating methods, allowing for continuous production. Moreover, it ensures uniform heating, is pollution-free, and achieves high purity.

2. Due to the characteristics of microwave heating technology, the production process is energy-efficient, environmentally friendly, and safe.

3. Using microwave drying and high-temperature sintering equipment shortens the production cycle and reduces the occupancy of working capital.

4. Additionally, microwave industrial equipment is easy to maintain, requires minimal downtime, and can be stopped and restarted according to market demand.

α-Al₂O₃ prepared by microwave calcination not only features lower firing temperatures (reduced by 100–150°C) and shorter holding times (shortened by 50%–80%), but also offers strong controllability of crystal grain size, uniform distribution, energy efficiency, environmental friendliness, and pollution-free advantages. It effectively reduces labor intensity and production costs, facilitating the development of automated and intelligent equipment.

II. Application Characteristics of Microwave Calcination Technology:

Microwave calcination-alumina equipment relies on materials (powder, granules, blocks, sheets, columns, and other small arbitrary shapes) to absorb microwave thermal energy themselves. Microwaves are extremely high-frequency electromagnetic waves. In a microwave field, polar and non-polar molecules within the material become polarized, turning into dipole molecules. These dipoles align with the electric field direction. Since the electric field is alternating, the dipoles rotate and vibrate accordingly. For example, at a frequency of 2450 MHz, they rotate and vibrate 2.45 billion times per second, generating an effect similar to molecular friction, thereby absorbing the electric field's energy and generating heat. The material itself becomes the heat source. Thus, microwave heating involves the material heating uniformly throughout. In contrast, traditional processes using coal, electricity, oil, or gas kilns are energy-intensive or produce pollution and exhaust emissions. Their heating methods rely on radiation, convection, and other heat conduction processes from the outside in, resulting in high energy consumption, low efficiency, and prolonged heating times.

Microwave technology offers energy savings (high thermal conversion efficiency, saving over 30% energy compared to traditional heating methods), environmental protection (no external emissions, effectively reducing harmful substance generation), cleanliness (materials heat by absorbing microwaves themselves, ensuring no contact or pollution, improving product quality and yield), and high efficiency (rapid heating rates, high energy utilization). Therefore, Zhongsheng's microwave industrial equipment operates at temperatures up to 1600°C, with kiln temperature stability within ±5°C. It features a high degree of automation, effectively reducing labor requirements and improving the production environment.

III. Quality Advantages of Zhongsheng Microwave Industrial Equipment:

Hunan Zhongsheng Thermal Energy Co., Ltd., established in 2011 with registered capital of 12 million RMB, is a long-term professional engaged in the R&D, application, and equipment integration of microwave thermal technology in industry. It designs, manufactures, and sells integrated microwave equipment. The company primarily produces microwave experimental furnaces suitable for enterprises and research institutions, as well as custom microwave industrial equipment. In the field of microwave applications, it holds 12 unique invention patents and 57 utility model patents. Its microwave heating kiln technology was selected for the National Development and Reform Commission's fifth batch of key energy-saving technology promotion catalogs. Compared to low-power household microwave ovens, Zhongsheng's microwave industrial equipment meets the demands of continuous operation, stable production, and durability in industrial settings. It is professionally configured with 1.5KW industrial-grade microwave sources, featuring continuously adjustable power to ensure uniform, adjustable, and controllable furnace chamber temperatures. It guarantees 24-hour uninterrupted use. Additionally, it employs a proprietary crack antenna energy-feeding device to ensure a uniform microwave field and prevent microwave reflection from damaging the magnetron, allowing the magnetron to operate 24 hours non-stop. Replaceable wear parts can be changed online without stopping production. It also uses a unique microwave leakage prevention device: microwave leakage does not exceed 1mW/cm2 (national standard allows no more than 5mW/cm2), significantly enhancing production safety, while other manufacturers typically only meet industry requirements. Zhongsheng's microwave drying equipment, microwave experimental furnaces, microwave high-temperature push plate kilns, microwave high-temperature roller kilns, microwave rotary kilns, and microwave cracking kilns all have successful application cases.

IV. Services: Technical exchange / Small batch sampling / Site visits / Equipment ordering

Microwave calcination α-alumina contact: Manager Xu of Zhongsheng:156 7439 3491

Factory address: Tonghai Road, Economic Development Zone, Yueyang City, Hunan Province