Other

Netzsch Trockenmahltechnik Gmbh

Netzsch-condux Mahltechnik Gmbh

Alpine Aktiengesellschaft

Alpine Aktiengesellschaft Augsburg

Nied, Roland, Dr.-ing.

Nied, Roland

Roland Nied

Hermann Sickel

Lars-Peter Weiland

Herbert Hackl

Udo Enderle

Dimitrios Makrakis

Thomas Becker

Herbert Horlamus

Ekkehart Illigner

Wolfgang Rohmann

Fritz Kaiser

Machine having a rotor which is mounted in a cantilevered fashion on a bearing and has a rotational axis along which a free, subsequently non-mounted rotor end runs starting from the bearing, the rotor end having a rotor end side which is spaced apart from a fixed rotor opposing side by a gap, and which, during operation of the machine when the rotor is rotating, is deflected with respect to the rotational axis as a result of imbalance of the free, non-mounted rotor end, or as a result of externally applied forces, wherein the rotor end side is curved or beveled so as to drop away at least in its end region towards its edge and in a direction towards the bearing.

Machine having a cantilever-mounted rotor

A method is disclosed for crushing material to be ground with a mill which contains a grinding chamber which is connected to a feed for material to be ground and to an outlet for ground particles, and contains grinding devices for producing particles of the desired fineness from the fed material to be ground, wherein the grinding takes place in a reducing atmosphere which contains a reduction gas. Also disclosed, is a mill having a grinding chamber which is connected to a feed for material to be ground and to an outlet for ground particles, and contains grinding devices for producing particles of the desired fineness from the fed material to be ground, wherein the grinding chamber contains a reducing atmosphere in which the grinding takes place and which contains a reduction gas.

Method for crushing of grinding material and corresponding mill

A method for jet milling of damp or wet grist in a jet mill, such that at least one of the operating parameters is appropriately selected so that a combined drying and milling process occurs in which, to obtain an end product with predetermined degree of fineness and moisture content. The specific operating mechanism required for milling is selected so that it is greater than or equal to the specific drying requirement, and the end product is released from the jet mill with the predetermined fineness and moisture content. In addition, the invention relates to a jet mill to perform this method, such that adjusting, controlling or regulating devices are foreseen for adjusting, controlling or regulating at least one of the operating parameters.

Method for jet milling and jet mill therefor

A mill and operating method for using grinding bodies for grinding a grinding stock. Grinding bodies that have passed through the through the product outlet enter an upwardly inclined discharge pipe from where, when the grinding body mill is at a standstill, the grinding bodies are directed out of the discharge pipe through the product outlet into a rotor body of the separating device. When operation of the grinding body mill is resumed, the grinding bodies are conveyed back into the grinding chamber owing to the rotation of the rotor body.

Operating method for a grinding body mill and grinding body mill for the same

A method for dry operation of an agitator bead mill, with a mill housing that includes a grinding chamber, in which a rotatable agitator shaft extends horizontally between an input side and an output side and in which grinding media are situated. An output gas is fed into the grinding chamber on the output side, goes together with ground grist through the separation system radially with respect to the transport direction, and thus leaves the grinding chamber together with ground grist through the separation system and onward through the product output. Also disclosed is an agitator bead mill for executing the method, such that the separation system has a static sieve with a free perforated surface that is chosen in such a way that the pass-through speed of the gas leaving the agitator mill through the separation system and the product outlet amounts approximately to 10 m/s to 30 m/s.

Method for operating an agitator bead mill and agitator bead mill therefor

A method for the operation of a jet mill with an integrated dynamic air classifier, wherein particles are fed as grinding stock into a grinding chamber of the jet mill and are ground there into ultra-fine particles by grinding, in that superheated steam or technical gases is/are used as working stock, wherein at least one surface-active additive is fed to the grinding stock for stabilization of the generated ultra-fine particles. A jet mill for performing this method, having an integrated dynamic air classifier, and a grinding chamber into which superheated steam or technical gases are provided as working stock via working stock feed devices as grinding stock and in which the grinding stock is ground into ultra-fine particles by grinding, and wherein feeding devices for at least one surface-active additive for stabilization of the generated ultra-fine particles are provided.

Jet mill and method for operation of a jet mill

A pulverizer includes a cutting rotor with a multiplicity of cutting blades, a cutting stator surrounding the cutting rotor with a plurality of stator blades, a milling stock inlet for the milling stock feed and a discharge screen in direction of rotation of the cutting rotor located after the milling stock inlet, wherein all stator blades in direction of rotation of the cutting rotor are arranged between the milling stock inlet and the discharge screen. Furthermore, an operating method for a pulverizer as described above is also contemplated.

Pulverizer and operating method therefor

The invention relates to a method for producing very fine particles by means of a jet mill (). The relative distance a/dbetween at least approximately concentric milling jet inlets () whose center lines intersect at least approximately in one point is adjusted in accordance with the pressure of the working medium, a representing the jet length and drepresenting the nozzle diameter.

Method for the production of very fine particles by means of a jet mill

A method and jet mill apparatus for generating fine particles by means of a jet mill with an integrated dynamic air classifier including a classifying wheel classifying wheel shaft and classifier housing, wherein between the classifying wheel and classifier housing a classifier gap is formed and between the classifying wheel shaft and the classifier housing a shaft passage is formed, wherein gap flushing of classifier gap or shaft passage takes place with compressed gases of low energy content, and wherein comminution jet inlets are present which are charged with energy-rich superheated steam. Through the invention a dynamic air classifier explained above and a corresponding operating method therefor are additionally created.

Method for generating finest particles and jet mill therefor as well as classifier and operating method thereof

The invention relates to a method for producing very fine particles by means of a jet mill using compressed gases as the grinding gas, characterized in that the grinding gas is under pressure of &#x2266;4.5 bar(abs).

Method for producing very fine particles by means of a jet mill

A method and apparatus for generating fine particles via a jet mill with an integrated dynamic air classifier, wherein the rotational speed of a classifying rotor of the air classifier and the inner amplification ratio V (=Di/DF) are so selected, set or controlled that the circumferential velocity of the operating medium at an immersion pipe or outlet connection assigned to the classifying wheel reaches up to 0.8 times of the velocity of sound of the operating medium. A dynamic air classifier with a classifying wheel is additionally created, wherein a source for an operating medium is a fluid, more preferably a gas or a vapour, which has a higher and more preferably a substantially higher velocity of sound than air.

The invention relates to an air separator for sifting material suspended in a flow of gas having course material and fine material by using a sifting wheel which rotates in a sifting chamber and which has blades fixed on the external periphery thereof. The blade channels are cross-flown radially from the outside by gas containing the suspended fine particles. The oversized particles are rejected before reaching he internal end of the blade canal. The flow of fine particles is guided through the blade channels in a forced manner in a plurality of consecutive layers in the direction of the axis of rotation. The arrangement in layers of the flow of fine particles after it leaves the blade channels remains in place until it leaves the sifting chamber.

Air separator

A cutting mill has a cutting rotor and a rotatable sizing means, arranged together with the cutting rotor in a common housing.

Cutting mill

A process and device for fluidized-bed jet milling, in which solid particles to be milled, which are suspended in a flowing fluid, are disintegrated into particles of a smaller size by using at least one fluid jet induced to enter the fluidized bed with high energy to bring about an exchange of energy between the particles of the fluidized bed. The interaction between particles and the fluid jet entering the fluidized bed with high energy is influenced, especially in the area of entry of the jet, by a centrifugal force, which acts on the particles in the fluidized bed, in the vicinity of the site of entry of the fluid jet.

Process for fluidized-bed jet milling, device for carrying out this process and unit with such a device for carrying out this process

An air separator for crushing coarse particles of a material and separating resultant fine particles has a single motor which drives a separator wheel having a plurality of blades mounted between two disks and defining radial blade channels through which separating air carries the fine particles from outside to inside. A plurality of beaters is mounted on one of the disks for crushing coarse particles. Apparatus for continuously varying the cross section of the flow path of the separator air is provided for varying a cut point below which particles are carried by the separating air and above which particles are returned to the beaters for further crushing without variation of the speed of the motor.

Growing community of inventors

Bonstetten, Germany

Roland Nied