Fertilizer Ultrafine Pulverizer

Whether processing water-soluble fertilizers, NPK compounds, or specialized chemical nutrients, the XSW series provides a consistent particle size distribution from 60 to 2500 mesh. The system operates under continuous negative pressure, ensuring a dust-free environment and thermal stability for heat-sensitive materials.

Technical Principle & Engineering Advantages

A. Patented Shearing & Impact Mechanism

Unlike standard single-tooth hammer mills, our Fertilizer Ultrafine Pulverizer utilizes a patented multi-tooth hammer design. As the grinding disc rotates at high speeds, the material is subjected to multiple shear and impact events per revolution. This engineering breakthrough increases the impact frequency by 2-3 times, resulting in a 30% increase in both throughput and fineness compared to conventional models.

B. Integrated Air Classification

The machine eliminates the need for traditional screens, which are prone to clogging in fertilizer applications. A VFD-controlled stepped impeller (classifier wheel) sits at the top of the chamber. Particles that reach the target fineness are drawn out by negative pressure, while coarse particles are redirected by the internal guide shroud back to the grinding zone for further processing. This "one-time formation" process reduces over-grinding and significantly lowers energy consumption.

C.Material Protection & Safety

Gravity Impurities Trap: The feeding system includes a built-in gravity separator to remove heavy debris and metallic impurities before they enter the grinding chamber, protecting the rotor and liners from damage.

Gravity Impurities Trap: The feeding system includes a built-in gravity separator to remove heavy debris and metallic impurities before they enter the grinding chamber, protecting the rotor and liners from damage.

Technical Specifications (Standard Series)

Verified data from Starwin Mill official technical documentation:

System Configuration

A complete Fertilizer Ultrafine Pulverizer production line consists of:

Feeding Unit: Frequency-controlled screw feeder with gravity impurities trap.

Pulverizing Host: Vertical shaft impact mill with patented multi-tooth hammers.

Collection Unit: High-efficiency cyclone separator for finished product recovery.

Dust Filtration: Pulse-jet bag filter to ensure 99.9% recovery and clean workshop air.

Fan System: High-pressure blower to maintain negative pressure throughout the line.

Technical FAQ

Q1: How do you adjust the particle size of the fertilizer powder?

A: The fineness of the Fertilizer Ultrafine Pulverizer is controlled by the speed of the classifier wheel via a Variable Frequency Drive (VFD). Increasing the RPM produces finer powder, while decreasing it results in a coarser output. No screen changes are required.

Q2: What materials of construction are available for corrosive fertilizers?

A: For materials like Potassium Sulfate or Ammonium Phosphate, we offer full SUS304 or SUS316L Stainless Steel configurations. For non-corrosive organic fertilizers, we provide a heavy-duty Carbon Steel series to optimize costs.

Q3: Can the system handle heat-sensitive chemical fertilizers?

A: Yes. The negative pressure airflow continuously draws fresh air through the chamber, which dissipates friction heat and keeps the material temperature stable, preventing the fertilizer from "caking" or melting.

About Qingdao Xingshengwei Machinery Co., Ltd.

Based in Qingdao, China, Qingdao Xingshengwei Machinery Co., Ltd. is a leading manufacturer specializing in powder technology. Our Starwin Mill brand is recognized globally for high-performance ultrafine grinding solutions. With a focus on "Service First, Quality Assurance," we provide customized engineering for the chemical, food, and pharmaceutical industries.