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Milling machines are used to reduce the size of material by cutting, crushing, or grinding it. The choice of industrial milling equipment depends on the industry and the materials to work with. Besides, there is a significant difference between those aimed to remove layers from metal or other materials workpieces and those designed to reduce particle size for materials that come in bulk.

Milling

Growing populations and intensive farming in the last centuries reduced soil nitrate levels. Aware of the risks to food security, chemists Fritz Haber and Carl Bosch developed a way to industrialize synthetic nitrogen fertilizer production. They created the Haber-Bosch process for ammonia synthesis which is still used today. Manufacturers produce over a hundred million metric tons of nitrogenous fertilizers every year.

Nitrogen fertilizer

Gently crush down brittle, easily broken materials to fine particle size.


<h2>Gentle milling action for minimum fines generation</h2>
The Flake crusher from Hosokawa Alpine offers a gentle milling action that minimizes fines; which means that the Flake Crusher is often used in hazardous dust areas. Typically the circumferential speed is around 1 m/s.

The material to be crushed is strained through a screen with a horizontal rotor. The crushing movement of the rotor can take place both in an oscillating and rotating manner.

The most common applications of this device are crushing of lumped salts and hygroscopic substances, deagglomeration after drying and mixing, crushing of flakes to granulate, recycling of tablets, and dust-free crushing.

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Flake crusher

For the gentle crushing of soft to medium-hard substances. Widely used in food industries for size reduction, pulverization, deagglomeration or delumping before they become a finished product.


<h2>Gently crush soft to medium-hard substances</h2>
The Bexmill from Hosokawa Alpine is a Conical gentle crusher, used to crush soft to medium-hard substances.

The mill can be charged both continuously and discontinuously.

Due to its conical form, the Bexmill can be operated in contrast to the classic Flake Crusher at higher revolutions. Through these larger throughputs, a higher fineness can be achieved.

The product spectrum ranges from wet to dry feed material.

This Conical gentle crusher is often used in processes of homogenization of mixtures, after mixer agglomeration, the disintegration of agglomerates, after fluid beds and kilns, and in the finishing of granulates.

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Conical gentle crusher

High-quality powder coatings are often required to manufacture equipment, appliances, and vehicles to ensure product durability and longevity. A combined dry grinding and classifying system can significantly help to improve the quality of powder coatings production by providing steep particle size distribution. To achieve the finest uniform powder coatings, the mixture of pigment, polymer resin, and other additives must be finely pulverized.


<h2>Classifier mill to grind brittle material dry, free-flowing, and fine powders</h2>
The Impact Classifier Mill ICM by NEUMAN &amp; ESSER is designed for grinding brittle material to superfine particles such as materials for powder coatings. It combines efficient impact grinding and precise classification technology. During impact grinding, grinding tools throw feed materials into the liner and crush it. The classifier separates coarse particles and sends them back to the mill’s grinding zone for further grinding. It effectively achieves grinding cuts and narrow particle size distribution of 20 μm to 1,000 μm. The throughput of the various mill sizes and designs can range from 10 kg/hr to 20,000 kg/hr. In addition, the large grinding chamber has cooler temperatures that result in lower fines generation.

The ICM employs direct drive technology, a type of permanent-magnet synchronous motor. It removes using a gearbox and oil supply in its rotor, making the mill easy to operate and clean. In addition, the mill is pressure shock resistant up to 11 bar, a must when grinding for powder coatings.

Classifier mill for powder coating

Recovered Carbon Black (rCB) can be recycled back to the tire production chain and serves as a usable material in the manufacturing of rubber products such as conveyor belts. The main challenge in recycling tires for recovered carbon black of versatile use is refining the pyrolyzed tire materials from various feedstocks to achieve consistent fineness. Typically, an efficient grinding, milling, and classifying system are required to ensure the desired fineness of rCB and increase its value.


<h2>Classifier mill for superfine grinding and classifying process</h2>
The Impact Classifier Mill ICX by NEUMAN &amp; ESSER is suited for dry grinding by combining extra-fine grinding with high-precision classification in a single assembly. During grinding, rapidly moving grinding tools convey feed materials into the liner at variable speeds and crush them. The integrated classifier separates coarse particles carried via airflow. Coarse materials rejected from the classifier re-enters the grinding zone for further reduction. The ICX can achieve particle size top cut from 5 µm to 50 µm. It also enables high throughput rates with high energy efficiency and the capability to process mill capacities ranging from 10 kg/hr to 20,000 kg/hr.

The direct drive uses a VFD-controlled motor; this avoids using a gearbox and oil supply in the rotor. As a result, the ICX can provide easy operation, low maintenance, and low energy consumption by using this design.

When grinding potentially explosive dust such as carbon black, a pressure shock-resistant classifier mill is pressure-resistant up to 11 bar. The NEA ICX is also compatible, and other ATEX-compliant systems can be attached to it.

Classifier mill for recovered carbon black

Find production technology for Nitrogen fertilizer milling, and connect directly with leading machine manufacturers worldwide

Nitrogen fertilizer milling

Which nitrogen fertilizer milling equipment do you need?

Flake crusher

Conical gentle crusher

Classifier mill for powder coating

Classifier mill for recovered carbon black

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