An airflow dryer is a type of drying equipment that uses the principle of hot air circulation to heat moist materials, evaporate their moisture, and achieve drying. It features fast drying speed, high efficiency, uniform drying temperature, and simple operation. In organic fertilizer production, the airflow dryer is commonly used to dry bio-organic fertilizers, livestock and poultry manure, and similar raw materials.
I. Product Overview:
The airflow dryer, also known as a high-speed airflow dryer or flash dryer, is a piece of equipment that utilizes high-velocity hot air to rapidly remove both surface and internal moisture from materials.
It is widely used in the fertilizer, feed, chemical, pharmaceutical, and light industries. This dryer is particularly suitable for powders, granules, and flake-like materials that have high moisture content but are heat-sensitive and require fast drying.
Compared with traditional rotary drum dryers, the airflow dryer has significant advantages, including faster drying, smaller footprint, and lower energy consumption. It is especially suitable for medium and small-scale production capacities or scenarios requiring strict moisture control.
In organic and bio-fertilizer production lines, it is often used to pre-dry high-moisture crushed raw materials. This reduces water content while preserving nutrients, ensuring stable feedstock conditions for subsequent granulation and packaging.
II. Working Principle:
The airflow dryer mainly consists of a hot air furnace, feeder, drying pipeline, separator, and induced draft fan system. Its core principle is the rapid contact and mixing of hot air with wet materials, achieving moisture evaporation in a very short time.
Working Process:
1. A heat source (such as a coal furnace, gas burner, biomass furnace, or electric heater) generates high-temperature air, which is forced into the drying pipeline by a blower.
2. Wet materials are evenly fed into the high-speed airflow via a screw feeder or pneumatic conveying system.
3. Inside the airflow, the materials are suspended and rapidly dispersed, ensuring instant heat exchange with hot air.
4. Moisture evaporates quickly, and dried materials are carried into a cyclone separator or bag filter for solid-gas separation.
5. Dried products are discharged through an outlet valve, while exhaust gases are purified before being released.
Since the drying time is typically only 1–3 seconds, the material reaches the desired moisture content with minimal impact on nutrients, color, and active components.
III. Product Applications:
Thanks to its high efficiency and versatility, the airflow dryer is widely used in multiple industries:
Fertilizer Industry:
* Organic Fertilizer: Drying high-moisture raw materials such as chicken manure, cow dung, pig manure (after crushing).
* Bio-organic Fertilizer: Drying fermentation residues, biogas residues, straw powder, and sawdust powder.
* Microbial Agents: Rapid drying of carrier powders while maintaining microbial viability.
Feed Industry:
* Drying fish meal, bone meal, distiller’s grains, soybean meal, and other high-moisture feed ingredients.
Chemical & Pharmaceutical Industry:
* Drying starch, glucose, light calcium carbonate, gypsum powder, and pharmaceutical intermediates.
Other Industries:
* Drying wood powder, mineral powder, metal oxides, dyes, and lightweight building material powders.
In organic fertilizer production lines, airflow dryers are usually used as **pre-treatment equipment**, reducing moisture content below 20% before feeding materials into a rotary drum dryer or directly into a granulator. This improves production efficiency and final product yield.
IV. Product Features:
1. Fast Drying Speed
* Uses high-velocity airflow for instant heat transfer; drying is completed within 1–3 seconds, ideal for heat-sensitive materials.
2. Low Energy Consumption & High Efficiency
* Direct contact between material and hot air ensures high thermal efficiency, superior to traditional drying methods.
3. High Product Quality
* Rapid evaporation minimizes damage to nutrients, color, and active compounds.
4. Compact Design & Small Footprint
* Simple structure; drying pipelines arranged vertically or in a loop layout; requires only one-third the floor space of rotary dryers.
5. Strong Versatility
* Suitable for powders, granules, and fibrous materials; especially effective for small-particle, high-moisture, fast-drying applications.
6. High Degree of Automation
* Equipped with automatic feeding systems and temperature controls; easy to operate with low labor intensity.
7. Eco-Friendly & Energy-Saving
* Paired with cyclone separators and bag filters to minimize dust emissions; compliant with environmental standards.
With its energy-saving, rapid, and eco-friendly features, the airflow dryer has become an essential piece of equipment in organic and bio-fertilizer production lines. It can quickly reduce material moisture content while preserving nutrients, significantly improving granulation, storage, and packaging stability.
For organic fertilizer manufacturers, the airflow dryer not only reduces energy consumption in production but also enhances product quality and strengthens market competitiveness.
For more inquiries or more information, please contact:
Sales Department / Tina Tian
+86 – 15538237222
Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd
Email: tianyaqiong@yz-mac.cn
Website: www.yz-mac.com
Post time: Sep-03-2025