Microwave Drying Equipment

Microwave Drying Equipment: Choose ZhongSheng for Technical Strength

I. Principles and Characteristics of Microwave Drying and Heating:

Microwave heating and drying utilize the non-contact penetrating nature of microwaves to heat the interior of materials. Electromagnetic energy is directly converted into heat by acting on the molecular structure of the medium. The penetrating property ensures simultaneous heating of both the interior and exterior of the material without the need for heat conduction. Due to the lack of heat dissipation conditions inside, a temperature gradient forms where the interior temperature is higher than the exterior, creating a pressure difference that drives internal heat or moisture to permeate toward the surface. In contrast, conventional heating methods rely on radiation, convection, and other heat conduction processes from the outside in. This results in inconsistent temperature gradients between the interior and exterior of the material, poor heat absorption, high energy consumption, low energy efficiency, prolonged heating time, significant heat loss, and a tendency for materials to clump. Regular furnace cleaning, shutdowns for maintenance, and frequent replacement of heaters placed inside the furnace chamber—which are不耐温不耐腐 (not resistant to high temperatures or corrosion)—are required.

Microwave drying is applied to traditional and chemical materials that are difficult to dry using conventional external heat conduction methods, such as:

Polysilicon, plastic functional masterbatch, rubber granules, zirconium, decopperized anode slime, niobium hydroxide filter cake, nickel chloride salt, nickel carbonate, pyrophyllite, polytetrafluoroethylene resin, expanded tobacco stems, molecular sieve catalytic materials, activated carbon, pearlescent pigment materials, electronic ceramics, honeycomb ceramics, structural ceramics, daily-use ceramics, mica sheets, nickel sulfate, scheelite and wolframite, vanadyl amino acid, silicon carbide, ternary battery materials, lithium materials for power batteries, sodium materials for power batteries, lithium manganese oxide, diamond micro-powder, rare earth phosphors, special refractory insulation materials, glass fiber, dipotassium phosphate, dispersion resin, recycled magnesium-carbon散料 (scattered materials), etc.

II. Design Features of ZhongSheng Microwave Drying Equipment:

After years of accumulated microwave technology and application experience, ZhongSheng microwave drying equipment offers significant production advantages and meets user expectations:

1. Utilizes large-area microwave antenna energy feeding to avoid localized overheating caused by concentrated microwaves.

2. Employs high-air-volume variable frequency fans for dehumidification, ensuring timely removal of moisture from the furnace and preventing condensation inside; condensed water in the dehumidification pipes is collected and discharged centrally to prevent dripping onto the ground.

3. Features a fully automatic deviation correction mechanism for dynamic adjustment, ensuring the conveyor belt operates within the permitted process error range (±25mm); uses an automatic tensioning mechanism to prevent belt slippage.

4. Equipped with online microwave leakage detectors at the inlet and outlet of the conveyor belt; automatic alarm triggers if microwave leakage exceeds standards; microwave anti-leakage devices ensure leakage does not exceed 1mW/cm² (national standard is ≤5mW/cm²), greatly enhancing safety. Includes a handheld microwave leakage detector for随时检测 (on-the-spot testing) of leakage around the equipment.

5. Multiple (16) infrared thermometers are installed; microwave power automatically adjusts based on temperature, allowing strict control of material temperature and precise regulation of each section of the microwave drying furnace. Combined with variable speed control of the conveyor belt, different process parameters can be adjusted at any time to ensure the material reaches the required moisture content.

6. Uses 1.5kW industrial water-cooled magnetrons with a service life of at least 5,000 hours; each magnetron can be started and stopped independently, allowing online replacement and easy maintenance.

7. PLC, touch screens, and frequency converters from brands like Siemens ensure stable and reliable equipment operation.

8. The conveyor belt is made of polytetrafluoroethylene (PTFE) with one smooth side and one rough side; the smooth side contacts the material to prevent sticking, while the rough side contacts the drive rollers to prevent slipping; the belt withstands temperatures up to 260°C, is wear-resistant, and ensures the material and belt do not contact any metal throughout the process.

9. High degree of automation: The entire process, from material feeding via the spreader to drying and discharge, is fully enclosed and automatically operated by PLC control programs according to set process curves, requiring no manual intervention and significantly saving labor.

III. Company Profile of ZhongSheng Microwave Heating Equipment:

Hunan ZhongSheng Thermal Energy Technology Co., Ltd., established in 2011 with registered capital of 12 million RMB, is primarily engaged in the R&D and application of microwave thermal energy technology, as well as the design, manufacturing, and sales of microwave technology equipment. The company develops and produces a series of industrial microwave kilns and furnaces, including: microwave drying equipment, microwave drying systems, microwave chamber drying rooms, microwave belt drying lines, microwave multifunctional experimental furnaces, microwave muffle furnaces, microwave vacuum experimental furnaces, microwave tube experimental furnaces, microwave pyrolysis experimental equipment, microwave high-temperature roller hearth kilns, microwave high-temperature push plate kilns, microwave rotary kilns, microwave shaft kilns, microwave tunnel kilns, microwave rotary hearth furnaces, microwave annular kilns, microwave bell kilns, microwave cracking kilns, microwave-electric hybrid kilns, and other series of industrial kiln equipment.

In March 2012, ZhongSheng's "Industrial Microwave/Electric Hybrid High-Temperature Heating Kiln Technology" passed a technical achievement appraisal organized by the Hunan Science and Technology Department. The appraisal, conducted by seven experts from fields including energy, new materials, electronic information, thermal engineering, automatic control, metallurgy, and refractory materials, concluded that "the technology is at the domestic forefront."

On March 6, 2012, three products derived from this technology—"RWEG Microwave (Electric) High-Temperature Push Plate Kiln," "RWET Microwave (Electric) High-Temperature Roller Hearth Kiln," and "RWS Microwave Multifunctional Experimental Furnace"—successfully passed a product appraisal organized by the Hunan Economic and Information Technology Commission and the Hunan Resource Comprehensive Utilization Association. Attending experts unanimously agreed that these products reached domestic advanced levels. The company's microwave high-temperature industrial kilns were included in the National Development and Reform Commission's 2013 National Key Energy-Saving Technology Promotion Catalog (Fifth Batch). In 2013, the company's microwave technology won the second prize for scientific and technological achievements in Yueyang City.

IV. Services: Technical Exchange / Small-Sample Testing / Visits / Equipment Ordering

Clients are especially welcome to visit our company for on-site inspections. In the field of microwave industrial equipment, we possess genuine intellectual property technology, several pilot-scale devices, non-standard manufacturing capacity, and application examples of various furnace types—details that cannot be fully conveyed through words or images alone. In the high-temperature microwave application领域 (field), we hold our own invention patents. We have accumulated considerable process experience and industrial application examples. Friends are welcome to visit and exchange ideas; please call to schedule an appointment if needed.

Microwave Drying Equipment Inquiry: Manager Xu 15674393491

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