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Roller mill

A technology of roller mills and grinding roads, applied in the field of roller mills, can solve the problems of energy loss and achieve the effects of reducing energy, increasing production, and saving energy

Inactive Publication Date: 2016-01-20
LOESCHE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From an energy point of view, this means that not only additional energy must be added for pneumatic transport, but energy for pre-compaction from the grinding disc drive is also lost

Method used

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Embodiment Construction

[0029] Figures 1 and 2 illustrate the prior art. FIG. 1 shows the already described principle of operation of the roller pair comprising the grinding roller 24 and the pre-pressing roller 26 .

[0030] Figure 2 is a view showing a known arrangement of pre-compression rollers 26 arranged on the outer grinding track edge 27 and thus arranged in running ring with a subsequently arranged grinding roller (not shown) Actually the same running ring.

[0031] image 3 The pre-compression roll 6 according to the invention is shown arranged in such a way that it rolls completely over the grinding stock (not shown) which is supplied helically to the distributing grinding roll 4 and compacts it. Grinding material.

[0032] The grinding roll 4 and the pre-pressing roll 6 are conical rolls that roll on the flat grinding track 2 with a parallel grinding gap structure. image 3 A pre-compression roll 6 is shown, which is formed smaller than the grinding roll 4 since it is only used for prep...

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Abstract

The invention relates to roller mills, in particular to air-swept roller mills of the LOESCHE type. The roller mill is preferably used for crushing cement clinker or granulated blast furnace slag, and the roller mill comprises fixed rotatable grinding rollers (4) on the grinding track (2) of the rotating grinding disc (3) and Fixed rotatable pre-compression rollers (6) between the rollers (4), which compress the layer of product to be ground and deair it. In order to increase the efficiency of the grinding process while reducing energy requirements, the position of the pre-compression rollers is adjusted in such a way that said pre-compression rollers connected upstream roll and press on the entire product to be ground which is supplied to the grinding rollers in a helical shape. It is time to grind the product. When looking down on the grinding disc, the pre-compression rollers are arranged radially in the direction of the center of the grinding disc, and the running surface of the pre-compression rollers rolls on a track smaller than that of the associated grinding roll.

Description

technical field [0001] The invention relates to a roller mill according to the preamble of claim 1 . [0002] The invention is a roller mill especially suitable for grinding cement slag blocks and granulated blast furnace slag in the building material industry. Typically, the roller mill includes a classifier integrally formed therewith, or arranged outside the roller mill. Background technique [0003] EP0406644B1 discloses an air-swept roller mill of the LOESCHE type, in which cement clinker or granulated blast furnace slag is comminuted by a combination of grinding rolls and pre-pressing rolls. Pre-compression rollers are used to compact and smooth the abrasive layer. Each grinding roll is assigned a pre-compression roll and forms a roll pair with this pre-compression roll. Air-swept roller mills are known with two or three such roller pairs arranged symmetrically at equal distances from one another and rolling on a rotating grinding disc or a grinding layer formed the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C15/04B02C15/06
CPCB02C15/00B02C15/04B02C15/06B02C2015/002Y02P40/10
Inventor 约尔格·朗格尔
Owner LOESCHE GMBH
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