1. Working principle

2. 
   

Microwave heating: Multiple groups of water-cooled industrial magnetrons emit microwaves to penetrate the material to achieve volumetric heating and simultaneous temperature rise inside and outside, completely solving the problems of traditional kilns with "burning outside and burning inside", large temperature differences, and uneven sintering.

Push plate transportation: Hydraulic/mechanical push rod drives the high temperature resistant corundum-mullite push plate, and the material saggar carries the material continuously through the preheating zone → high temperature sintering zone → slow cooling zone → discharge zone, fully automatic and stable operation.

Atmosphere and temperature control: supports various atmospheres such as air, weak oxidation, nitrogen, inert gas, etc.; multi-temperature zone independent PID+PLC program control, infrared + thermocouple dual temperature measurement, temperature control accuracy ±5~10℃, maximum temperature up to 1650℃.

2. Core structure (modular customization)

Furnace body: stainless steel shell + high-purity alumina fiber insulation, three-section design, total length 6–20m, customizable.

Microwave system: 30-150kW power adjustable, multiple upper and lower ports evenly feed energy, uniform temperature field; magnetron water-cooling has long life (≥8000h).

Push plate and guide rail: The push plate/sagger is made of corundum-mullite (resistant to 1700°C); the bottom guide rail is made of 95 corundum, which is wear-resistant, low friction and has a long life.

Transmission system: hydraulic/servo push rod, speed adjustable from 0.5–3m/h, smooth operation and large thrust.

Cooling system: slow cooling + water cooling + air cooling, the discharge temperature at the end of the kiln is ≤80℃**, and can be packaged directly.

Electrical control: PLC + touch screen, programmable process curve; equipped with multiple protections for over-temperature, over-current, water leakage, and microwave leakage, and can be remotely monitored.

3. Key parameters (typical)

Maximum temperature: 1650℃ (long-term stability 1500–1600℃)

Microwave frequency: 2.45GHz

Installed power: 60–150kW

Effective width of furnace: 200–400mm

Push plate size: 200–300mm (corundum-mullite)

Capacity: 200–800kg/h (depending on material and temperature)

Energy saving rate: ≥50% compared to gas kiln, ≥40%** compared to resistance kiln**

4. Core advantages

Extreme energy saving: Microwaves act directly on materials, without heat storage loss in the kiln body, and energy consumption is significantly reduced.

Excellent quality: uniform heating inside and outside, fine grains, high density, strength increased by 10-15%; no black core, small deformation, yield rate ≥98%.

Efficient and high-yield: the sintering cycle is shortened by 30–50%, and continuous automated production is achieved.

Green and environmentally friendly: no waste gas, no NOₓ, low noise, microwave leakage <2mW/cm² (much better than the national standard).

Simple operation and maintenance: no burner, no blockage, small maintenance and low spare parts cost.

5. Typical applications

Ceramics: 95/99 alumina ceramics, corundum bricks, electronic ceramics, structural ceramics, porous/foam ceramics.

New energy materials: lithium battery/sodium battery positive and negative electrode materials, graphite, lithium iron phosphate, ternary material calcination.

Powder and catalyst: ceramic powder, molecular sieve, catalyst carrier, metal oxide reduction synthesis.

Refractory materials: clay bricks, high alumina bricks, insulation bricks, antique bricks.

6. Company Profile

Shijiazhuang Hongtao Technology Co., Ltd. (Zhengding, Hebei) is a high-tech enterprise specializing in microwave high-temperature equipment. It integrates R&D, manufacturing, customization, installation, and after-sales. It has its own magnetron power supply, precision temperature control, and microwave homogenization core technologies. It can provide exclusive solutions according to customer temperature, production capacity, atmosphere, and size.