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alpine as spiral jet mill | hosokawa micron powder systems

alpine as spiral jet mill | hosokawa micron powder systems

The Alpine AS Spiral Jet Mill is designed for the micronization of pharmaceuticals and certain chemical powders. Material is injected into the grinding zone by gas nozzles. A series of angled nozzles located around the perimeter of the grinding chamber allows for the introduction of grinding gas into the chamber. The grinding gas causes particles to flow around the chamber in a spiral manner. Size reduction occurs by particle to particle collisions and also impact against the walls of the chamber. As the material gets finer and lighter the ground particles are drawn towards the outlet at the center of the milling chamber.

The grinding air is injected tangentially via Laval nozzles in the nozzle ring into the machine. This causes a spiral jet of air to form in the grinding zone, from which the mill derives its name. A high pressure forms in the mill as a result of the spiral flow of air that can rise to 1 bar overpressure in operation without product. The integrated injector is charged with compressed air which ensures that the product is conveyed into the machine against the overpressure present in the machine. This, however, is associated with a considerable compressed air consumption, which can be as much as 30% of the total grinding air requirement.

The feed product circulates close to the nozzle ring and is thus intercepted repeatedly by the air jets exiting the nozzles. Comminution is the result of inter-particle collision caused by the particles flowing at different speeds in the nozzle jet. Comminuted material is conveyed along with the air to the discharge, the spiral flow subjects the particles to a classification: only fine particles are discharged, coarse particles remain in the mill.

The product also has an effect on the air flow within the machine: the more product there is in the machine, the more the spiral flow is braked and the lower is the centrifugal force and the coarser the end product. The relationship of the product to the classifying air flow rate is therefore the most significant parameter for setting the fineness of the spiral jet mill. In principle, different nozzle angles can also be used to achieve the required fineness values, whereby the complete nozzle ring must be exchanged in this case.

The grinding air is injected tangentially via Laval nozzles in the nozzle ring into the machine. This causes a spiral jet of air to form in the grinding zone, from which the mill derives its name. A high pressure forms in the mill as a result of the spiral flow of air that can rise to 1 bar overpressure in operation without product. The integrated injector is charged with compressed air which ensures that the product is conveyed into the machine against the overpressure present in the machine. This, however, is associated with a considerable compressed air consumption, which can be as much as 30% of the total grinding air requirement.

The feed product circulates close to the nozzle ring and is thus intercepted repeatedly by the air jets exiting the nozzles. Comminution is the result of inter-particle collision caused by the particles flowing at different speeds in the nozzle jet. Comminuted material is conveyed along with the air to the discharge, the spiral flow subjects the particles to a classification: only fine particles are discharged, coarse particles remain in the mill.

The product also has an effect on the air flow within the machine: the more product there is in the machine, the more the spiral flow is braked and the lower is the centrifugal force and the coarser the end product. The relationship of the product to the classifying air flow rate is therefore the most significant parameter for setting the fineness of the spiral jet mill. In principle, different nozzle angles can also be used to achieve the required fineness values, whereby the complete nozzle ring must be exchanged in this case.

used hosokawa alpine for sale. mikron equipment & more | machinio

used hosokawa alpine for sale. mikron equipment & more | machinio

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

A HOSOKAWA ALPINE Originals machine Refurbished by the original manufacturer Use of original components only Original manufacturer warranty Guaranteed manufacturer spare parts supply Short lead time Before ...

alpine afg fluidized bed opposed jet mill | hosokawa micron powder systems

alpine afg fluidized bed opposed jet mill | hosokawa micron powder systems

The Alpine AFG Fluidized Bed Opposed Jet Mill is suitable for ultra-fine size reduction of many materials up to a Mohs hardness of 10. Compressed gas is accelerated through a series of nozzles at extremely high velocities. Particles are drawn into the accelerated gas streams and are ground via inter-particle collisions in the jet stream. In order to achieve ultra-fine particle sizes down to D97 < 3 m, the AFG is equipped with a dynamic deflector-wheel air classifier that can be operated at varying speeds to alter product fineness.

The Alpine AFG Fluidized Bed Jet Mill is suitable for fine and ultrafine size reduction of any material up to a Moh's hardness of 10 that can be fluidized by the expanded compressed gas in the grinding chamber. The addition of an internal forced vortex classifier is capable of controlling particle top sizes (D97) as low as 3 microns.

The key to maintaining a consistent particle size distribution is the integral air classifier. Air classification is defined as the separation of bulk material according to the settling velocity in a gas. In this type of jet mill two opposing forces act on the particle, the mass force and the drag force. The particle size at which the mass force and the drag force act equally on the particle is defined as the cut point. If the mass force (or weight of the particle) exerts a greater influence on the particles coarser than the cut point, they are returned to the grinding zone of the jet mill and reduced further. If the drag force (or airflow through the classifier) acts upon particles finer than the cut size, they are carried through the classifier wheel and recovered as product.

By changing the parameter of classifier wheel speed, airflow, and grind pressure, a wide variety of particle size cut points can be achieved. Achievable particle size ranges include D97 as low as 3 microns to as high as 60 microns.

The Alpine AFG Fluidized Bed Jet Mill is suitable for fine and ultrafine size reduction of any material up to a Moh's hardness of 10 that can be fluidized by the expanded compressed gas in the grinding chamber. The addition of an internal forced vortex classifier is capable of controlling particle top sizes (D97) as low as 3 microns.

The key to maintaining a consistent particle size distribution is the integral air classifier. Air classification is defined as the separation of bulk material according to the settling velocity in a gas. In this type of jet mill two opposing forces act on the particle, the mass force and the drag force. The particle size at which the mass force and the drag force act equally on the particle is defined as the cut point. If the mass force (or weight of the particle) exerts a greater influence on the particles coarser than the cut point, they are returned to the grinding zone of the jet mill and reduced further. If the drag force (or airflow through the classifier) acts upon particles finer than the cut size, they are carried through the classifier wheel and recovered as product.

By changing the parameter of classifier wheel speed, airflow, and grind pressure, a wide variety of particle size cut points can be achieved. Achievable particle size ranges include D97 as low as 3 microns to as high as 60 microns.

lithium carbonate milling | hosokawa micron powder systems

lithium carbonate milling | hosokawa micron powder systems

Lithium compounds namely Lithium Cobalt Oxide and Lithium Iron Phosphate used in battery applications have specific particle size distribution requirements. The Mikro ACM Air Classifying Mill SF is used to grind lithium carbonate and produce the specific particle size distribution required for use in high performance Lithium Ion Batteries. Ultra-fine lithium powders used in Lithium Ion battery applications, result in improved battery performance. Performance improvements include higher useable capacity, longer life cycles, faster charging rates, higher efficiency, consistent discharge rates and size and weight advantages. The Mikro ACM Air Classifying Mill SF is a special variation of the ACM and can produce an extremely fine and superior particle size distribution when compared to other types of air classifying mills.

Lithium is a relatively rare element that is found in very small concentrations in many different rocks and also in brines. Very few of these sources have potential commercial value. The largest reserves of commercially available lithium salts are found in the brine deposits in dry sea beds located in a few South American countries where the US Geological Survey estimates the total reserves to be in excess of 12 million tons.

Since World War II the production and use of Lithium compounds have greatly increased. The main uses of Lithium compounds include Lithium oxide and Lithium carbonate for use in the production of ceramics and glass, Lithium carbonate for use in the production of Lithium ion batteries and Lithium Stearate for use in lubricants.

The Mikro ACM Air Classifying Mill is an air swept mechanical impact mill designed to grind lithium materials. Its durability, reliability, and precision are what make it one of the most popular industrial workhorses for fine size reduction of lithium materials.

Hosokawas Air Classifying Mills are a proven technology for processing lithium materials for nearly 20 years. The ACM also has numerous applications with food, pharmaceutical, mineral, chemical and cosmetic materials.

The Alpine AFG Fluidized Bed Jet Mill uses a set of nozzles to accelerate compressed gas to the center of the grinding chamber. Lithium feed materials become entrained in the gas stream and collide resulting in particle-on-particle size reduction. Since the lithium particles are grinding against each other and not against internal mill surfaces, ultra-pure lithium materials can be produced.

Hosokawas Fluidized Bed Jet Mill produces some of the finest lithium compounds available for applications requiring ultra-low contamination. The AFG can also be used for milling hard minerals, abrasive chemicals and ultra-fine pharmaceuticals.

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