Organic fertilizer drying machines include varieties such as horse manure drying machines, chicken manure drying machines, cow manure drying machines, pig manure drying machines, duck manure drying machines, and goose manure drying machines. The finished product of organic fertilizer drying machines has fine particles, and the dried product can be used as a culture medium for cultivating edible mushrooms like double-spore mushrooms, or sold as feed for breeding turtles, fish, snails, chickens, and ducks.

Section 1: Organic Fertilizer Drying Machine Mechanical Structure and Working Principle:

The organic fertilizer dryer can directly dry manure with a moisture content of up to 70%-80% to a safe storage moisture level of 13% in one operation. The entire process is conducted within a closed system, thereby reducing environmental pollution during the drying process. The equipment primarily consists of a heat source, feeding machine, feeding conveyor, rotating drum, discharge conveyor, material crushing unit, induced draft fan, unloading device, and electrical control cabinet; after dehydration, the wet material is added to the dryer, where it is evenly distributed by the scraper blades inside the drum, allowing the material to uniformly disperse and come into full contact with hot air, thereby accelerating heat and mass transfer. During the drying process, under the action of inclined scraper blades and the hot gas, the material is discharged as finished product through the star-shaped discharge valve at the other end of the dryer.

II. Technical Features of Organic Fertilizer Drying Machine (Dryer):

Our company's research and development of drum drying technology and equipment is a new technique for organic fertilizer drying.

High degree of roller dryer mechanization, large production capacity, capable of continuous operation.
2. Excellent structure, simple design, material runs smoothly through the cylinder resistance, and easy to operate.
3. Few malfunctions, low maintenance costs, and low power consumption.
4. Wide application range, excellent uniformity of product drying.
5. It dries while also sterilizing and deodorizing.

III. Prospects for the Organic Fertilizer Drying Machine:

As China intensifies its agricultural development, agricultural and sideline products are gaining more attention. The pollution caused by animal waste is becoming increasingly severe. However, chicken manure and cow manure are rich in nutrients and trace elements, making them excellent organic fertilizers. Developing chicken and cow manure into compound organic fertilizers not only transforms waste into treasure but also reduces environmental pollution and prevents the spread of diseases, offering significant economic and social benefits.

Analysis of Cow Dung Organic Fertilizer Composition
Cattle manure contains 14.5% organic matter, 0.30-0.45% nitrogen, 0.15-0.25% phosphorus, and 0.10-0.15% potassium, making it a valuable resource for soil fertilization in agriculture. The organic matter and nutrient content of cattle manure are lower than those of other livestock, with a fine texture, high moisture content, slow decomposition, and low heat generation, classifying it as a slow-release fertilizer. Cattle manure has significantly lower nutrient content than chicken or pig manure (lower nitrogen, phosphorus, and potassium levels), and as a cold organic fertilizer, it decomposes slower than chicken or pig manure, resulting in a much slower fertilization effect.
Pig Manure Organic Fertilizer Composition Analysis
Pig manure contains 15% organic matter and a moderate total nutrient content, with nitrogen ranging from 0.5% to 0.6%, phosphorus from 0.45% to 0.5%, and potassium from 0.35% to 0.45%. The texture of pig manure is fine and its composition is complex, including proteins, fats, organic acids, cellulose, hemicellulose, and inorganic salts. It is rich in nitrogen but has a smaller carbon-to-nitrogen ratio (14:1), making it generally easy to decompose by microorganisms, releasing nutrients that can be absorbed and utilized by crops.
Chicken Manure Organic Fertilizer Composition Analysis
Chicken manure is rich in nutrients, with the following composition: 89.8% dry matter, 28.8% crude protein, 12.7% crude fiber, 14.4% digestible protein, 28.8% non-nitrogen extract, 2.6% phosphorus, and 8.7% calcium. It also contains 0.23% histidine, 0.11% methionine, 0.87% leucine, 0.53% lysine, and 0.46% phenylalanine. Properly processed, it can be an excellent green organic fertilizer or chicken manure feed. As a farm fertilizer, chicken manure has higher fertilizer efficiency than pig or cow manure. Each ton of sticky chicken manure contains 11.35 kg of nitrogen, 10.44 kg of phosphorus (P2O5), and 5.45 kg of potassium (K2O) in plant nutrients. Due to its high organic content, chicken manure can also be used as a raw material for biogas production, harnessing energy.