EP0352192A1 - Process for grinding and compacting any kind of ore and apparatus for carrying out this process - Google Patents

Process for grinding and compacting any kind of ore and apparatus for carrying out this process Download PDF

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Publication number
EP0352192A1
EP0352192A1 EP89402066A EP89402066A EP0352192A1 EP 0352192 A1 EP0352192 A1 EP 0352192A1 EP 89402066 A EP89402066 A EP 89402066A EP 89402066 A EP89402066 A EP 89402066A EP 0352192 A1 EP0352192 A1 EP 0352192A1
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EP
European Patent Office
Prior art keywords
press
grinding
density
distributor system
outlet
Prior art date
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Granted
Application number
EP89402066A
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German (de)
French (fr)
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EP0352192B1 (en
Inventor
Maurice Paliard
Jean-Marc Martin
Francis Cochet
Benoît Valdelievre
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Technip Energies France SAS
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CLE
Technip SA
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Application filed by CLE, Technip SA filed Critical CLE
Priority to AT89402066T priority Critical patent/ATE99563T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B02C21/002—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill
    • B02C21/005—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill the roller mill having cooperating rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator

Definitions

  • the present invention essentially relates to a process for grinding and compacting any mineral material, such as for example cement clinker.
  • roller presses for grinding and compacting various mineral or organic materials has been known for a long time. It is also known that, in order to obtain regular operation of the roller presses, the material feeding the press should be preconditioned to avoid excessive swelling of the feed.
  • Grinding plants are also known which are provided with rollers allowing prior grinding of the material to be ground, which makes it possible to pre-compact the material before applying the final grinding force.
  • the present invention aims to remedy this drawback in particular by proposing a method and a grinding installation which make it possible to ideally precondition the material feeding the press, which can thus work optimally.
  • the subject of the invention is a process for crushing and compacting any mineral material, such as for example cement clinker, and of the type consisting in preconditioning this material before crushing it in a press.
  • rollers or the like characterized in that the preconditioning of the material consists in mixing various forms of the material feeding the press in order to regulate its bulk density at a value of between approximately 0.60 D p and 0.90 D p , D p being the density of the agglomerated or compacted product leaving the press, in order to ensure stable operation of the latter and therefore stabilize the instantaneous energy consumption necessary for grinding.
  • This process is further characterized in that the bulk density of the material feeding the press is between 0.68 D p and 0.85 D p .
  • the bulk density at the press feed is regulated between 1.7 and 2.05.
  • the invention also relates to a grinding and compacting installation for implementing the process meeting the above characteristics and of the type comprising a roller press or the like allowing the grinding and partial agglomeration of a material. any mineral, and downstream of this press, a means of transport associated with a distributor system and allowing the recycling of part of the cased and partially agglomerated material towards the press supply.
  • This installation is characterized in that the other part of the material leaving the aforementioned distributor system feeds a second distributor system, one outlet of which communicates with the aforementioned means of transport, thereby regulating the quantity and density of the crushed and partially agglomerated material recycled. to the feed to the roller press.
  • one of the two aforementioned distributing systems is a screen, a sieve or the like.
  • roller press is supplied with mineral matter coming from a pneumatic separator or an equivalent system connected to the supply of said press by at least one pipe fitted with a third system.
  • distributor whose outlet is connected on the one hand to the inlet of the roller press, and on the other hand to the other outlet of the aforementioned second distributor system.
  • a density measuring device is advantageously arranged at the entrance to the press.
  • the installation visible in the single figure is a grinding installation in a closed circuit comprising a press 1 with rollers 2, the inlet 3 of which is provided with a device for measuring the density of the products feeding the press. 1, which device is schematically identified in 4.
  • the press 1 is supplied with raw products as materialized by line 5, with a ground product and partially agglomerated by the press and recycled, as materialized by line 6, and with grainy or powdery products, as materialized by line 7, these latest products from a pneumatic separator or equivalent system 8.
  • the separator 8 receives a mixture of ground products, as will be described in detail below, and this by line 9, and it separates said mixture into a fine and finished product which is discharged in suspension in the gases extracted via line 10 , and in a grainy or pulverulent product which leaves the separator 8 via the pipe 11. It will be observed here that the separator 8 ensures, at the level of the bodies for distributing the material, a deagglomeration function.
  • the crushed and agglomerated product forms a flow 12 passing through a first distributing system 13 dividing the material into two partial flows marked at 14 and 15.
  • the flow 14 essentially comprising compacted plates is recycled to the input 3 of the press 1 by a means of transport 16 connected to the line 6 previously mentioned.
  • the other part or flow 15 of the material leaving the first system distributor 13 feeds a second distributor system 17 dividing the flow of crushed and partially agglomerated product on the one hand into coarse elements leaving through the line 18 communicating with the means of transport 16, and on the other hand into fine products leaving through the line 19 .
  • the line 19 could lead directly to the conveyor 20 recycling the fine products to the inlet of the pneumatic separator 8 via the line 9 mentioned above.
  • the separator 8 outlet pipe 11 is equipped with a third distributor system 21, the outlet of which is connected on the one hand to the line 7 leading to the inlet 3 of the press 1, and on the other hand, although this is not shown, at the outlet 19 of the second distributor system 17, via a conduit or the like 22, for the purpose of directly recycling the grainy product to the feed of the separator 8.
  • the installation includes additional grinding equipment shown diagrammatically at 23 which can be constituted by a ball, bar, vibrating, impact or similar mill.
  • outlet 19 can be equipped with a distribution flap 24 for the finished products leaving the second distribution system 17.
  • the distribution flap 24 subdivides the material which reaches it into two lines, namely a line 25 terminating in the crusher 23 and a line 26 terminating in the conveyor 20, which also receives the ground products extracted from the crusher 23 by the line 27.
  • the duct 22 instead of being directly connected to the outlet 19 of the second distributor system 17, is here connected to the inlet of the crusher 23, which may include ventilation which can be used to extract at least part of the ground product.
  • the density in bulk or of the mixture of the various forms of the material fed to the inlet 3 of the roller press 1 by the lines 5, 6 and 7 will be modulated in such a way that it lies within a range allowing stable operation. of the press, and this essentially by modulating the proportion of recycled platelets in line 6, by actuation of the first distributor system 13.
  • the aforementioned bulk density will also be advantageously modulated by acting on the third system distributor 21 to modulate the proportion of granular products passing through line 7.
  • the second distributor system 17 also intervenes for the regulation of the bulk density of the products feeding press 1 since, as we understand, it plays a role as regards the quantity of plates leaving the first distributor system 13 and recycled at the inlet 3 of the press 1 via the transport means 16.
  • the second distributor system 17 or the first distributor system 13 can be constituted by a screen, a sieve or the like.
  • the bulk density of the material feeding the roller press should have, according to an essential characteristic of this invention, a value between 0.60 D p and 0.90 D p , D p being the density of the agglomerated or compacted product leaving the press.
  • the density of the material feeding the press will preferably be between 0.68 and 0.85 D p, it being understood that the density regulation giving the press excellent operating stability can be achieved in any suitable manner.
  • the density measuring device 4 located at the inlet 3 of the press 1 will advantageously and at all times allow the density of the products feeding said press to be controlled, this device possibly being able to act automatically on the distributing systems. 13 and 21.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Press Drives And Press Lines (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
  • Fertilizers (AREA)

Abstract

A system comprising a roll press for crushing and partially agglomerating a mineral material, a conveyor means arranged downstream of this press and associated with a distributor device and allowing to recycle one portion of the crushed and partially agglomerated material to the inlet of the press whereas the other portion of the material issuing from this distributor device feeds a second distributor device one outlet of which communicates with the conveyor means to thereby control the amount and density of the crushed and partially agglomerated material recycled to the feed of the press.

Description

La présente invention a essentiellement pour objet un procédé de broyage et compactage d'une matière minérale quelconque, telle que par exemple du clinker de ciment.The present invention essentially relates to a process for grinding and compacting any mineral material, such as for example cement clinker.

Elle vise également une installation pour la mise en oeuvre de ce procédé.It also relates to an installation for the implementation of this process.

L'utilisation des presses à rouleaux pour le broyage et le compactage de matières minérales ou organiques diverses est connue depuis longtemps. On sait également que, pour obtenir un fonctionnement régulier des presses à rouleaux, il convient de préconditionner la matière alimentant la presse pour éviter un foisonnement excessif à l'alimentation.The use of roller presses for grinding and compacting various mineral or organic materials has been known for a long time. It is also known that, in order to obtain regular operation of the roller presses, the material feeding the press should be preconditioned to avoid excessive swelling of the feed.

C'est ainsi qu'il est connu d'utiliser par exemple sur les presses de compactage d'engrais une ou plusieurs hélices entraînées en rotation pour réaliser un pré-compactage de la matière à l'alimentation de la presse à rouleaux.It is thus known to use, for example on fertilizer compacting presses, one or more propellers driven in rotation in order to pre-compact the material for feeding the roller press.

On connait également des installations de broyage munies de rouleaux permettant un broyage préalable de la matière à broyer, ce qui permet de réaliser un pré-compactage de la matière avant d'appliquer l'effort final de broyage.Grinding plants are also known which are provided with rollers allowing prior grinding of the material to be ground, which makes it possible to pre-compact the material before applying the final grinding force.

Mais, dans toutes ces installations connues, il a été constaté qu'il n'était pas possible d'obtenir un fonctionnement stable de la presse à rouleaux qui, comme on le sait doit transmettre des énergies très élevées à la matière dans les applications de broyage fin.However, in all these known installations, it has been found that it was not possible to obtain stable operation of the roller press which, as is known, must transmit very high energies to the material in the applications of fine grinding.

Aussi, la présente invention a pour but de remédier notamment à cet inconvénient en proposant un procédé et une installation de broyage qui permettent de préconditionner de manière idéale la matière alimentant la presse, laquelle peut ainsi travailler de façon optimale.Also, the present invention aims to remedy this drawback in particular by proposing a method and a grinding installation which make it possible to ideally precondition the material feeding the press, which can thus work optimally.

A cet effet, l'invention a pour objet un procédé de broyage et compactage d'une matière minérale quelconque, telle que par exemple du clinker de ciment, et du type consistant à préconditionner cette matière avant de la broyer par écrasement dans une presse à rouleaux ou analogues, caractérisé en ce que le préconditionnement de la matière consiste à mélanger diverses formes de la matière alimentant la presse pour réguler sa densité en vrac à une valeur comprise entre environ 0,60 Dp et 0,90 Dp, Dp étant la densité du produit aggloméré ou compacté sortant de la presse, afin d'assurer un fonctionnement stable de cette dernière et donc stabiliser la consommation énergétique instantanée nécessaire au broyage.To this end, the subject of the invention is a process for crushing and compacting any mineral material, such as for example cement clinker, and of the type consisting in preconditioning this material before crushing it in a press. rollers or the like, characterized in that the preconditioning of the material consists in mixing various forms of the material feeding the press in order to regulate its bulk density at a value of between approximately 0.60 D p and 0.90 D p , D p being the density of the agglomerated or compacted product leaving the press, in order to ensure stable operation of the latter and therefore stabilize the instantaneous energy consumption necessary for grinding.

Ce procédé est encore caractérisé en ce que la densité en vrac de la matière alimentant la presse est comprise entre 0,68 Dp et 0,85 Dp.This process is further characterized in that the bulk density of the material feeding the press is between 0.68 D p and 0.85 D p .

Selon encore une autre caractéristique de ce procédé, pour le broyage de ciment, la densité en vrac à l'alimentation de la presse est régulée entre 1,7 et 2,05.According to yet another characteristic of this process, for grinding cement, the bulk density at the press feed is regulated between 1.7 and 2.05.

L'invention vise également une installation de broyage et compactage pour la mise en oeuvre du procédé répondant aux caractéristiques ci-dessus et du type comprenant une presse à rouleaux ou analogues permettant le broyage et l'agglomération partielle d'une matière minérale quelconque, et en aval de cette presse, un moyen de transport associé à un système répartiteur et permettant le recyclage d'une partie de la matière boyée et partiellement agglomérée vers l'alimentation de la presse.The invention also relates to a grinding and compacting installation for implementing the process meeting the above characteristics and of the type comprising a roller press or the like allowing the grinding and partial agglomeration of a material. any mineral, and downstream of this press, a means of transport associated with a distributor system and allowing the recycling of part of the cased and partially agglomerated material towards the press supply.

Cette installation est caractérisée en ce que l'autre partie de la matière sortant du système répartiteur précité alimente un deuxième système répartiteur dont une sortie communique avec le moyen de transport précité pour ainsi réguler la quantité et la densité de la matière broyée et partiellement agglomérée recyclée vers l'alimentation de la presse à rouleaux.This installation is characterized in that the other part of the material leaving the aforementioned distributor system feeds a second distributor system, one outlet of which communicates with the aforementioned means of transport, thereby regulating the quantity and density of the crushed and partially agglomerated material recycled. to the feed to the roller press.

Selon encore une autre caractéristique de l'invention, l'un des deux systèmes répartiteurs précités est un crible, un tamis ou analogue.According to yet another characteristic of the invention, one of the two aforementioned distributing systems is a screen, a sieve or the like.

Cette installation est encore caractérisée en ce que la presse à rouleaux est alimentée par de la matière minérale provenant d'un séparateur pneumatique ou d'un système équivalent raccordé à l'alimentation de ladite presse par au moins une conduite équipée d'un troisième système répartiteur dont la sortie est raccordée d'une part à l'entrée de la presse à rouleaux, et d'autre part à l'autre sortie du deuxième système répartiteur précité.This installation is further characterized in that the roller press is supplied with mineral matter coming from a pneumatic separator or an equivalent system connected to the supply of said press by at least one pipe fitted with a third system. distributor whose outlet is connected on the one hand to the inlet of the roller press, and on the other hand to the other outlet of the aforementioned second distributor system.

Suivant une autre caractéristique de cette installation, un appareil de mesure de densité est avantageusement disposé à l'entrée de la presse.According to another characteristic of this installation, a density measuring device is advantageously arranged at the entrance to the press.

Mais d'autres caractéristiques et avantages de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère au dessin unique annexé, donné uniquement à titre d'exemple, et illustrant schématiquement une installation de broyage conforme aux principes de cette invention.But other characteristics and advantages of the invention will appear better in the detailed description which follows and refers to the single appended drawing, given only by way of example, and illustrating schematically a grinding installation in accordance with the principles of this invention.

Suivant un exemple de réalisation, l'installation visible sur la figure unique est une installation de broyage en circuit fermé comprenant une presse 1 à rouleaux 2 dont l'entrée 3 est munie d'un appareil de mesure de la densité des produits alimentant la presse 1, lequel appareil est repéré schématiquement en 4.According to an exemplary embodiment, the installation visible in the single figure is a grinding installation in a closed circuit comprising a press 1 with rollers 2, the inlet 3 of which is provided with a device for measuring the density of the products feeding the press. 1, which device is schematically identified in 4.

La presse 1 est alimentée en produits bruts comme matérialisé par la ligne 5, en un produit broyé et partiellement aggloméré par la presse et recyclé, comme matérialisé par la ligne 6, et en produits grenus ou pulvérulents, comme matérialisé par la ligne 7, ces derniers produits provenant d'un séparateur pneumatique ou d'un système équivalent 8.The press 1 is supplied with raw products as materialized by line 5, with a ground product and partially agglomerated by the press and recycled, as materialized by line 6, and with grainy or powdery products, as materialized by line 7, these latest products from a pneumatic separator or equivalent system 8.

Le séparateur 8 reçoit un mélange de produits broyés, comme on le décrira en détail plus loin, et cela par la ligne 9, et il sépare ledit mélange en un produit fin et fini qui est évacué en suspension dans les gaz extraits par la conduite 10, et en un produit grenu ou pulvérulent qui sort du séparateur 8 par la conduite 11. On observera ici que le séparateur 8 assure, au niveau des organes de répartition de la matière une fonction de désagglomération.The separator 8 receives a mixture of ground products, as will be described in detail below, and this by line 9, and it separates said mixture into a fine and finished product which is discharged in suspension in the gases extracted via line 10 , and in a grainy or pulverulent product which leaves the separator 8 via the pipe 11. It will be observed here that the separator 8 ensures, at the level of the bodies for distributing the material, a deagglomeration function.

En aval de la presse 1 à rouleaux 2, le produit broyé et aggloméré forme un flux 12 passant dans un premier système répartiteur 13 divisant la matière en deux flux partiels repérés en 14 et 15. Le flux 14 comportant essentiellement des plaquettes compactées est recyclé à l'entrée 3 de la presse 1 par un moyen de transport 16 relié à la ligne 6 précédemment citée. L'autre partie ou flux 15 de la matière sortant du premier système répartiteur 13 alimente un deuxième système répartiteur 17 divisant le flux de produit broyé et partiellement aggloméré d'une part en éléments grossiers sortant par la ligne 18 communiquant avec le moyen de transport 16, et d'autre part en produits fins sortant par la ligne 19.Downstream of the press 1 with rollers 2, the crushed and agglomerated product forms a flow 12 passing through a first distributing system 13 dividing the material into two partial flows marked at 14 and 15. The flow 14 essentially comprising compacted plates is recycled to the input 3 of the press 1 by a means of transport 16 connected to the line 6 previously mentioned. The other part or flow 15 of the material leaving the first system distributor 13 feeds a second distributor system 17 dividing the flow of crushed and partially agglomerated product on the one hand into coarse elements leaving through the line 18 communicating with the means of transport 16, and on the other hand into fine products leaving through the line 19 .

Bien que cela ne soit pas représenté, la ligne 19 pourrait aboutir directement au transporteur 20 recyclant les produits fins vers l'entrée du séparateur pneumatique 8 via la ligne 9 mentionnée précédemment.Although not shown, the line 19 could lead directly to the conveyor 20 recycling the fine products to the inlet of the pneumatic separator 8 via the line 9 mentioned above.

La conduite 11 de sortie du séparateur 8 est équipée d'un troisième système répartiteur 21 dont la sortie est raccordée d'une part à la ligne 7 aboutissant à l'entrée 3 de la presse 1, et d'autre part, bien que cela ne soit pas représenté, à la sortie 19 du deuxième système répartiteur 17, via un conduit ou analogue 22, dans le but de recycler directement le produit grenu à l'alimentation du séparateur 8.The separator 8 outlet pipe 11 is equipped with a third distributor system 21, the outlet of which is connected on the one hand to the line 7 leading to the inlet 3 of the press 1, and on the other hand, although this is not shown, at the outlet 19 of the second distributor system 17, via a conduit or the like 22, for the purpose of directly recycling the grainy product to the feed of the separator 8.

Selon la réalisation représentée, l'installation comporte un équipement complémentaire de broyage montré schématiquement en 23 qui peut être constitué par un broyeur à boulets, à barres, vibrant, à impact ou analogue.According to the embodiment shown, the installation includes additional grinding equipment shown diagrammatically at 23 which can be constituted by a ball, bar, vibrating, impact or similar mill.

En outre, la sortie 19 peut être équipée d'un volet de répartition 24 des produits finis sortant du deuxième système répartiteur 17.In addition, the outlet 19 can be equipped with a distribution flap 24 for the finished products leaving the second distribution system 17.

Le volet de répartition 24 subdivise la matière qui y parvient en deux lignes, à savoir une ligne 25 aboutissant au broyeur 23 et une ligne 26 aboutissant au transporteur 20, lequel reçoit également les produits broyés extraits du broyeur 23 par la ligne 27.The distribution flap 24 subdivides the material which reaches it into two lines, namely a line 25 terminating in the crusher 23 and a line 26 terminating in the conveyor 20, which also receives the ground products extracted from the crusher 23 by the line 27.

En outre, on voit sur la figure que le conduit 22, au lieu d'être directement raccordé à la sortie 19 du deuxième système répartiteur 17, est ici raccordé à l'entrée du broyeur 23, lequel peut comporter une ventilation qui peut être utilisée pour extraire au moins une partie du produit broyé.In addition, it can be seen in the figure that the duct 22, instead of being directly connected to the outlet 19 of the second distributor system 17, is here connected to the inlet of the crusher 23, which may include ventilation which can be used to extract at least part of the ground product.

Le fonctionnement de l'installation se déduit immédiatement de la description qui précède, mais, il convient d'insister ici sur un certain nombre de points.The operation of the installation is immediately deduced from the above description, but it is worth emphasizing here a certain number of points.

La densité en vrac ou du mélange des diverses formes de la matière alimentée à l'entrée 3 de la presse à rouleaux 1 par les lignes 5, 6 et 7 sera modulée de telle façon qu'elle se situe dans un intervalle permettant un fonctionnement stable de la presse, et cela essentiellement en modulant la proportion de plaquettes recyclées dans la ligne 6, par actionnement du premier système répartiteur 13. En outre, comme on le comprend, la densité en vrac précité sera avantageusement modulée aussi en agissant sur le troisième système répartiteur 21 pour moduler la proportion de produits grenus passant dans la ligne 7. Enfin, le deuxième système répartiteur 17 intervient lui aussi pour la régulation de la densité en vrac des produits alimentant la presse 1 puisque, comme on le comprend, il joue un rôle pour ce qui est de la quantité de plaquettes sortant du premier système répartiteur 13 et recyclée à l'entrée 3 de la presse 1 via le moyen de transport 16.The density in bulk or of the mixture of the various forms of the material fed to the inlet 3 of the roller press 1 by the lines 5, 6 and 7 will be modulated in such a way that it lies within a range allowing stable operation. of the press, and this essentially by modulating the proportion of recycled platelets in line 6, by actuation of the first distributor system 13. In addition, as can be understood, the aforementioned bulk density will also be advantageously modulated by acting on the third system distributor 21 to modulate the proportion of granular products passing through line 7. Finally, the second distributor system 17 also intervenes for the regulation of the bulk density of the products feeding press 1 since, as we understand, it plays a role as regards the quantity of plates leaving the first distributor system 13 and recycled at the inlet 3 of the press 1 via the transport means 16.

On observera ici que le deuxième système répartiteur 17 ou le premier système répartiteur 13 peut être constitué par un crible, un tamis ou analogue.It will be observed here that the second distributor system 17 or the first distributor system 13 can be constituted by a screen, a sieve or the like.

Pour assurer un fonctionnement stable de l'installation et pour stabiliser ainsi la consommation énergétique instantanée nécessaire au broyage-compactage, la densité en vrac de la matière alimentant la presse à rouleaux devra avoir, suivant une caractéristique essentielle de cette invention, une valeur comprise entre 0,60 Dp et 0,90 Dp, Dp étant la densité du produit aggloméré ou compacté sortant de la presse.To ensure stable operation of the installation and to thus stabilize the instantaneous energy consumption necessary for grinding-compaction, the bulk density of the material feeding the roller press should have, according to an essential characteristic of this invention, a value between 0.60 D p and 0.90 D p , D p being the density of the agglomerated or compacted product leaving the press.

La densité de la matière alimentant la presse sera de préférence comprise entre 0,68 et 0,85 Dp étant entendu que la régulation de la densité conférant à la presse une excellente stabilité de fonctionnement pourra être réalisée de toute manière appropriée.The density of the material feeding the press will preferably be between 0.68 and 0.85 D p, it being understood that the density regulation giving the press excellent operating stability can be achieved in any suitable manner.

A cet égard, l'appareil de mesure de la densité 4 situé à l'entrée 3 de la presse 1 permettra avantageusement et à chaque instant le contrôle de la densité des produits alimentant ladite presse, cet appareil pouvant éventuellement agir automatiquement sur les systèmes répartiteurs 13 et 21.In this regard, the density measuring device 4 located at the inlet 3 of the press 1 will advantageously and at all times allow the density of the products feeding said press to be controlled, this device possibly being able to act automatically on the distributing systems. 13 and 21.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple.Of course, the invention is in no way limited to the embodiment described and illustrated, which has been given only by way of example.

C'est ainsi qu'à l'entrée 3 de la presse à rouleaux, on peut avantageusement, sans sortir du cadre de l'invention, installer une trémie vibrante pour encore améliorer la régulation de la densité en vrac des produits alimentant la presse.Thus, at input 3 of the roller press, it is advantageous, without departing from the scope of the invention, to install a vibrating hopper to further improve the regulation of the bulk density of the products feeding the press.

Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits, ainsi que leurs combinaisons, si celles-ci sont effectuées suivant son esprit.On the contrary, the invention includes all the technical equivalents of the means described, as well as their combinations, if these are carried out according to the spirit.

Claims (7)

1. Procédé de broyage et compactage d'une matière minérale quelconque, telle que par exemple du clinker de ciment, et du type consistant à préconditionner cette matière avant de la broyer par écrasement dans une presse à rouleaux ou analogues, caractérisé en ce que le préconditionnement de la matière consiste à mélanger diverses formes de la matière alimentant la presse pour réguler sa densité en vrac à une valeur comprise entre environ 0,60 Dp et 0,90 Dp Dp étant la densité du produit aggloméré ou compacté sortant de la presse, afin d'assurer un fonctionnement stable de cette dernière et donc stabiliser la consommation énergétique instantanée nécessaire au broyage.1. A method of grinding and compacting any mineral material, such as for example cement clinker, and of the type consisting in preconditioning this material before crushing it in a roller press or the like, characterized in that the preconditioning of the material consists of mixing various forms of the material feeding the press to regulate its bulk density to a value between approximately 0.60 D p and 0.90 D p D p being the density of the agglomerated or compacted product leaving the press, in order to ensure stable operation of the latter and therefore stabilize the instantaneous energy consumption necessary for grinding. 2. Procédé selon la revendication 1, caractérisé en ce que la densité en vrac de la matière alimentant la presse est comprise entre 0,68 Dp et 0,85 Dp.2. Method according to claim 1, characterized in that the bulk density of the material feeding the press is between 0.68 D p and 0.85 D p . 3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, pour le broyage de ciment, la densité en vrac à l'alimentation de la presse est régulée entre 1,7 et 2,05.3. Method according to claim 1 or 2, characterized in that, for grinding cement, the bulk density at the press supply is regulated between 1.7 and 2.05. 4. Installation de broyage et compactage pour la mise en oeuvre du procédé selon l'une des revendications 1 à 3, et du type comprenant une presse (1) à rouleaux (2) ou analogues permettant le broyage et l'agglomération partielle d'une matière minérale quelconque, et, en aval de cette presse, un moyen de transport (16) associé à un système répartiteur (13) et permettant le recyclage d'une partie (14) de la matière broyée et partiellement agglomérée vers l'alimentation (3) de la presse (1), caractérisée en ce que l'autre partie (15) de la matière sortant de ce système répartiteur (13) alimente un deuxième système répartiteur (17) dont une sortie (18) communique avec ledit moyen de transport (16) pour ainsi réguler la quantité et la densité de la matière broyée et partiellement agglomérée recyclée vers l'alimentation (3) de la presse à rouleaux.4. Grinding and compacting installation for implementing the method according to one of claims 1 to 3, and of the type comprising a press (1) with rollers (2) or the like allowing the grinding and partial agglomeration of any mineral material, and, downstream of this press, a means of transport (16) associated with a distributor system (13) and allowing the recycling of a part (14) of the crushed and partially agglomerated material towards the food (3) of the press (1), characterized in that the other part (15) of the material leaving this distributor system (13) feeds a second distributor system (17), an outlet (18) of which communicates with said means of transport (16) thereby regulating the quantity and density of the crushed and partially agglomerated material recycled to the feed (3) of the roller press. 5. Installation selon la revendication 4, caractérisé en ce que l'un des deux systèmes répartiteurs (13, 17) précités est un crible, un tamis ou analogue.5. Installation according to claim 4, characterized in that one of the two distribution systems (13, 17) above is a screen, a sieve or the like. 6. Installation selon la revendication 4 ou 5, caractérisée en ce que la presse (1) à rouleaux est également alimentée par de la matière minérale provenant d'un séparateur pneumatique ou système analogue (8) raccordé à l'alimentation (3) de ladite presse par au moins une conduite (11) équipée d'un troisième système répartiteur (21) dont la sortie est raccordée d'une part à l'entrée (3) de la presse (1) à rouleaux, et d'autre part à l'autre sortie (19) du deuxième système répartiteur précité (17).6. Installation according to claim 4 or 5, characterized in that the press (1) with rollers is also supplied with mineral matter coming from a pneumatic separator or similar system (8) connected to the supply (3) of said press by at least one pipe (11) equipped with a third distributor system (21) whose outlet is connected on the one hand to the inlet (3) of the press (1) with rollers, and on the other hand at the other outlet (19) of the aforementioned second distributor system (17). 7. Installation selon l'une des revendications 4 à 6, caractérisée par un appareil de mesure de densité de la matière alimentant la presse (1), situé à l'entrée (3) de ladite presse.7. Installation according to one of claims 4 to 6, characterized by an apparatus for measuring the density of the material feeding the press (1), located at the inlet (3) of said press.
EP89402066A 1988-07-22 1989-07-20 Process for grinding and compacting any kind of ore and apparatus for carrying out this process Expired - Lifetime EP0352192B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402066T ATE99563T1 (en) 1988-07-22 1989-07-20 PROCESS FOR CRUSHING AND COMPACTION OF ANY MINERAL MATERIAL AND APPARATUS FOR PERFORMING SUCH PROCESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8809975 1988-07-22
FR8809975A FR2634402B1 (en) 1988-07-22 1988-07-22 PROCESS OF CRUSHING AND COMPACTION OF ANY MINERAL MATERIAL AND PLANT FOR CARRYING OUT SAID METHOD

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EP0352192A1 true EP0352192A1 (en) 1990-01-24
EP0352192B1 EP0352192B1 (en) 1994-01-05

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US (1) US4976469A (en)
EP (1) EP0352192B1 (en)
JP (1) JP2665381B2 (en)
AT (1) ATE99563T1 (en)
CA (1) CA1316515C (en)
DE (1) DE68912012T2 (en)
ES (1) ES2049835T3 (en)
FR (1) FR2634402B1 (en)

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DE4005323A1 (en) * 1990-02-20 1991-08-22 Krupp Polysius Ag Crushing plant for cement material - involves first stage accepting pre-crushed material, and feeding to second stage with constant output regulation
EP0476209A1 (en) * 1990-09-21 1992-03-25 Minas De Almaden Y Arrayanes, Sa Process for enrichment of heterogeneous ores
EP0513770A2 (en) * 1991-05-14 1992-11-19 Kawasaki Jukogyo Kabushiki Kaisha Crushing apparatus and crushing method
US6019299A (en) * 1996-04-18 2000-02-01 Kawasaki Jukogyo Kabushiki Kaisha Cement clinker grinding apparatus using vertical roller mill and its method
US6193176B1 (en) * 1997-02-18 2001-02-27 Kawasaki Jukogyo Kabushiki Kaisha Cement clinker grinding method using vertical roller mill and apparatus
DE10147591A1 (en) * 2001-09-27 2003-04-10 Polysius Ag Process for crushing regrind and grinding plant
DE102006017510A1 (en) * 2006-04-13 2007-10-18 Khd Humboldt Wedag Gmbh Closed circuit grinding mill comprises grinding circuit for pre-grinding of fresh goods with former grinding device and sifter, and both grinding circuits are coupled by dynamic sifter with rotating rod basket, which is used by circuits
CN102008989A (en) * 2010-12-15 2011-04-13 许相柱 Energy-saving ball-milling and screening combination machine

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NL9000105A (en) * 1990-01-16 1991-08-16 Wiener & Co Apparatenbouw Bv METHOD AND APPARATUS FOR PROCESSING CHOCOLATE MASS
DE4029202A1 (en) * 1990-09-14 1992-03-19 Buehler Ag METHOD FOR SORTING PARTICLES OF A BULK GOOD AND DEVICES THEREFOR
FR2670135B1 (en) * 1990-12-06 1993-03-26 Cle PROCESS FOR CRUSHING BROKEN MATERIAL COMPRISING SELECTIVE DEAGGLOMERATION AND INSTALLATION FOR THE IMPLEMENTATION OF THE PROCESS.
DK101792A (en) * 1992-08-17 1994-02-18 Smidth & Co As F L Process for milling material
DE4337215A1 (en) * 1993-10-30 1995-05-04 Kloeckner Humboldt Deutz Ag Circulating grinding plant
US5644181A (en) * 1995-01-05 1997-07-01 Dayton-Phoenix Group, Inc. Stator lamination design having a tapered opening
DE19528736A1 (en) * 1995-08-04 1997-02-06 Krupp Polysius Ag Arraangement for making mixture of ground material and water - in which material is ground in one stage and water added while grain size and viscosity of mixture are constantly monitored
DE19757431A1 (en) * 1997-12-23 1999-06-24 Kloeckner Humboldt Wedag Method for milling chopped grain with twin high pressure rollers and sieve by recirculating the granules
DE10056158C5 (en) * 2000-11-13 2014-11-13 Thyssenkrupp Industrial Solutions Ag Process and plant for the production of fine material
EP1717215A1 (en) * 2005-04-19 2006-11-02 Lafarge Process for compacting a hydraulic binder and ground tablets
US20080085160A1 (en) * 2006-10-04 2008-04-10 Taylor James W Soil substitute materials and methods of using the same
US8789784B2 (en) * 2010-05-14 2014-07-29 Ange Construction Co. Mobile self-contained loading and crushing apparatus
DE102015001404B3 (en) * 2015-02-04 2016-08-04 Khd Humboldt Wedag Gmbh Kreislaufmahlanlage with two grinders and method for operating the Kreislaufmahlanlage
DE102015009273B3 (en) * 2015-07-16 2016-12-29 Khd Humboldt Wedag Gmbh Method and device for two-stage grinding of fresh material
CN107597390A (en) * 2017-10-19 2018-01-19 湖州城区天顺化工厂 A kind of chemical products crush and the transport all-in-one of garbage disposal
CN110180624A (en) * 2019-07-18 2019-08-30 江苏新业重工股份有限公司 It is a kind of to crush thorough powder roll squeezer
CN112264172A (en) * 2020-09-24 2021-01-26 酒泉钢铁(集团)有限责任公司 Process for producing iron ore concentrate by grading, dry grinding and dry separation of low-grade magnetite

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EP0220681B1 (en) * 1985-10-29 1991-05-29 Klöckner-Humboldt-Deutz Aktiengesellschaft Device for grinding and milling damp brittle material

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005323A1 (en) * 1990-02-20 1991-08-22 Krupp Polysius Ag Crushing plant for cement material - involves first stage accepting pre-crushed material, and feeding to second stage with constant output regulation
EP0476209A1 (en) * 1990-09-21 1992-03-25 Minas De Almaden Y Arrayanes, Sa Process for enrichment of heterogeneous ores
EP0513770A2 (en) * 1991-05-14 1992-11-19 Kawasaki Jukogyo Kabushiki Kaisha Crushing apparatus and crushing method
EP0513770A3 (en) * 1991-05-14 1992-12-02 Kawasaki Jukogyo Kabushiki Kaisha Crushing apparatus and crushing method
US5221051A (en) * 1991-05-14 1993-06-22 Kawasaki Jukogyo Kabushiki Kaisha Crushing apparatus and crushing method
US6019299A (en) * 1996-04-18 2000-02-01 Kawasaki Jukogyo Kabushiki Kaisha Cement clinker grinding apparatus using vertical roller mill and its method
US6193176B1 (en) * 1997-02-18 2001-02-27 Kawasaki Jukogyo Kabushiki Kaisha Cement clinker grinding method using vertical roller mill and apparatus
DE10147591A1 (en) * 2001-09-27 2003-04-10 Polysius Ag Process for crushing regrind and grinding plant
DE10147591B4 (en) * 2001-09-27 2006-11-16 Polysius Ag grinding plant
DE102006017510A1 (en) * 2006-04-13 2007-10-18 Khd Humboldt Wedag Gmbh Closed circuit grinding mill comprises grinding circuit for pre-grinding of fresh goods with former grinding device and sifter, and both grinding circuits are coupled by dynamic sifter with rotating rod basket, which is used by circuits
CN102008989A (en) * 2010-12-15 2011-04-13 许相柱 Energy-saving ball-milling and screening combination machine
CN102008989B (en) * 2010-12-15 2012-01-25 许相柱 Energy-saving ball-milling and screening combination machine

Also Published As

Publication number Publication date
JPH0372963A (en) 1991-03-28
FR2634402A1 (en) 1990-01-26
DE68912012D1 (en) 1994-02-17
ATE99563T1 (en) 1994-01-15
EP0352192B1 (en) 1994-01-05
US4976469A (en) 1990-12-11
ES2049835T3 (en) 1994-05-01
DE68912012T2 (en) 1994-05-19
CA1316515C (en) 1993-04-20
FR2634402B1 (en) 1992-04-03
JP2665381B2 (en) 1997-10-22

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