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Classifier and method for operating a classifier

A classifier, technology for classifying areas, applied in the direction of chemical instruments and methods, solid separation, separating solids from solids with air flow

Inactive Publication Date: 2015-10-21
THYSSENKRUPP IND SOLUTIONS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this coupling results in improved fractionation efficiency, higher rotor rotational speeds and higher volumetric flow rates are required

Method used

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  • Classifier and method for operating a classifier
  • Classifier and method for operating a classifier
  • Classifier and method for operating a classifier

Examples

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Effect test

Embodiment Construction

[0041] figure 1A classifier 1 is shown having a cylindrical drum 3 rotating about an axis of rotation 2 and an air guide system 4 arranged around the drum, wherein a classifying area 5 is formed between the drum and the air guide system. In the illustrated exemplary embodiment, the granular feed material 6 to be classified is fed onto the cover of the trommel 3 via a material feed 7 arranged above the trommel 3 . Classification air 9 is supplied to the classification area 5 via the classification air supply 8 and the air guide system 4 .

[0042] The feed material 6 fed onto the cover of the trommel 3 is pushed outward by centrifugal force and falls into the classification area 5 . The coarse material 6 a of the feed 6 falls to the bottom and is removed via the coarse material outlet 10 , while the fine material 6 b is led together with the classifying air 9 into the trommel 3 and ejected via the fine material outlet 11 .

[0043] figure 2 Shows a classifier 1' according t...

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Abstract

The method according to the invention for operating a classifier for classifying piece-form material has the following method steps: a rotary cage is rotated, classifying air is taken, through an air-routing system enclosing the rotary cage, into a classifying zone formed between the rotary cage and air-routing system, and the piece-form material is supplied into the classifying zone, wherein one or more inserts are arranged in the classifying zone such that the torque to which the rotary cage is subjected - at the same rotational speed - is increased by at least 20% in relation to a design without any inserts and / or the distance between the air-routing system and the rotary cage is selected such that the torque to which the rotary cage is subjected - at the same rotational speed - is increased by at least 20% in relation to a design in which the air-routing system is at a distance which does not affect the torque of the rotary cage.

Description

technical field [0001] The invention relates to a classifier for classifying granular feed and a method for operating the classifier. Background technique [0002] In the case of a grinding system operated in open circuit, the grinding residue is fed as soon as it passes through the grinding plant and then has product characteristics related to fineness and particle size distribution. A significant increase in the efficiency of the grinding system can be achieved by using a classifier in which the grinding residue passes through the circuit of the grinder-classifier. Here, virgin material can be fed upstream or downstream of the grinder. Overgrinding is reduced in open circuit operation and enables better setting of product characteristics. Grinding machines for cement and mineral products are in particular ball mills, vertical and horizontal roller mills, attritors and high-pressure extruders. However, the output power of these attritors is limited and remains essentiall...

Claims

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Application Information

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IPC IPC(8): B07B7/083B07B9/02
CPCB07B7/083B07B9/02B02C2015/002Y02P40/10B02C21/00
Inventor O·哈格迈尔K·梅列斯M·武韦尔L·舒尔特
Owner THYSSENKRUPP IND SOLUTIONS AG
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