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Apparatus for classifying charge material

A technology of charging and sieving, applied in the direction of separating solids from solids with airflow, solid separation, chemical instruments and methods, etc., can solve problems such as high installation height and high cost

Active Publication Date: 2008-09-24
KRUPP POLYSIUS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment with two separate cascade screens and two separate bar screens results in relatively high costs
However, the variant with a common cascade screen is also relatively expensive, since the cascade screen requires a high installation height due to its unfavorable width / height ratio at high throughputs

Method used

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  • Apparatus for classifying charge material
  • Apparatus for classifying charge material
  • Apparatus for classifying charge material

Examples

Experimental program
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Embodiment Construction

[0025] The device 100 for screening a charge as shown in Figures 1 to 3 essentially consists of a static sieve 1 having a ventilated base 1a oriented at an angle to the vertical and through which a screening gas 2 flows; an inlet hole 3 for conveying the charge 9 to the ventilated base; an outlet hole 4 for the coarse charge; a dynamic screen 5 located downstream and comprising at least one rotor 5a; and at least An outlet hole 6 for the screen gas 2' laden with fines charge.

[0026] The ventilated base 1a is arranged at an angle a relative to vertical of from 20° to 70°, preferably from 30° to 60°. In the exemplary embodiment, the surface of the ventilation base 1a is planar and is provided with ventilation openings 1b, in particular ventilation slots (see FIG. 3 ).

[0027] The ratio of width b to vertical height h of the ventilated base la is at least 0.45, preferably at least 0.6. Correspondingly, the width of the ventilation base is larger than known designs of equival...

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Abstract

The invention relates to an apparatus for classifying charge material, comprising a static classifier which has a ventilating base oriented obliquely to the vertical and traversed by classifying gas; an inlet opening for charging the charge material to the ventilating base; an outlet opening for the coarse material; a downstream dynamic classifier which comprises at least one rotor; and at least one outlet opening for the classifying gas laden with fine material. The ventilating base has a ratio of width to vertical height of at least 0.45, preferably of at least 0.6.

Description

technical field [0001] The invention relates to a device for screening a charge having a static sieve with a ventilated base oriented at an angle to the vertical and through which screening air passes, and a dynamic sieve arranged downstream. Background technique [0002] German patent DE 4223762 describes a screen for screening granular charges having a bar cage screen and upstream of it a cascade of screens in the form of shafts. The cascading screen has two opposing axis-defining walls which are inclined with respect to the vertical and which form between them a primary screening area permeable to screening air. The shaft-defining wall is formed by obliquely arranged guide strips, through which the air is screened to flow laterally. The cascade screen operates in a closed loop with the bed mill, the guide bars serving to break up, ie crush, the rough material formed in the bed mill. The charge is fed to the cascading screen from the top and descends onto the guide slats...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B9/02B07B4/08
CPCB07B4/08B07B9/02
Inventor L·科宁E·博恰德特O·哈葛梅尔F·-J·祖霍夫
Owner KRUPP POLYSIUS AG
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