CA1108575A - Method of disintegrating a material and apparatus for performing same - Google Patents
Method of disintegrating a material and apparatus for performing sameInfo
- Publication number
- CA1108575A CA1108575A CA289,999A CA289999A CA1108575A CA 1108575 A CA1108575 A CA 1108575A CA 289999 A CA289999 A CA 289999A CA 1108575 A CA1108575 A CA 1108575A
- Authority
- CA
- Canada
- Prior art keywords
- column
- lumped
- disintegrating
- zone
- smaller particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Crushing And Pulverization Processes (AREA)
Abstract
Abstract of the Disclosure The method is characterized in that the material to be treated is formed within a confined space into a vertical cy-lindrical column, and the lower portion of the column is rotated by a rotor shaped as a truncated cone, the rotor thus transmitting a dynamic load to the material, which is thus disintegrated in an active horizontal zone without the use of any grinding or disintegrating bodies.
A material disintegrating apparatus according to the dis-closed method includes a hollow cylinder mounted concentrical-ly about a shaft above the rotor and connected to a housing by vertical partitions dividing the working space of the housing into a series of adjoining chambers, the rotor being so arranged with respect to these partitions that a horizontal zone is defi-ned therebetween for active disintegration of the material.
Furthermore, the internal space of the rotor is made up of sec-tions having each in the lower portion thereof an aperture for the supply of a carrier fluid into the zone of active disite-gration of the material.
The present invention enables to disintegrate a material with a high efficiency and moderate energy consumption.
A material disintegrating apparatus according to the dis-closed method includes a hollow cylinder mounted concentrical-ly about a shaft above the rotor and connected to a housing by vertical partitions dividing the working space of the housing into a series of adjoining chambers, the rotor being so arranged with respect to these partitions that a horizontal zone is defi-ned therebetween for active disintegration of the material.
Furthermore, the internal space of the rotor is made up of sec-tions having each in the lower portion thereof an aperture for the supply of a carrier fluid into the zone of active disite-gration of the material.
The present invention enables to disintegrate a material with a high efficiency and moderate energy consumption.
Description
The present invention relates to methods of working friable materials, and, more particularly, it relates to a method and apparatus for disintegrating materials, for instance, ores of ferrous and non-ferrous metals.
The invention can be utilized by various industries where raw materials are worked, e.g. by the mining industry, metallurgy of ferrous and non-ferrous metals, the chemical industry, etc.
Processes of crushing the grinding friable materials and broadly utilized by various industries using raw materials and working them by various methods in all types of equipment.
Nowadays the most widely utilized technique of disintegrating or reducing a material is its autogenous reduction in a confined space, e.g. in a rotating drum. According to this technique, lumps of the material are lifted in the vessel to a certain height and allowed to fall back under the action of gravity so as to cause them to break up.
A whole range of mills has been created, utilizing this technique.
A disadvantage of the method of autogenous disintegration of a material in a rotary drum is its inherent relatively low specific throughput and inadequate efficiency.
This is explained by the fact that the material is to be lifted to a certain height, so as to supply it with an amount of energy sufficient for its self-destruction.
There is also known a method of disintegrating a material ~ -2- `~
~ ~ r accelerated in a centrifugal bowl-shaped rotor and directed against deflection plates effecting its destruction.
However, this method has a number of disadvantages.
Among them is a relatively high energy consumption, and also excessive wear of the assemblies and components of the structure which have to withstand impact loads.
The main object of the present invention is to provide a method of continuous disintegration of a material by dynamic loads which should increase the intensity and efficiency of the process.
It is another object of the present invention to provide an apparatus for dynamic disintegration of a material which should be of a simple construction and offer high through-put.
It is also an object of the present invention to reduce the specific amount of metal in an apparatus for dis-integrating materials.
It is still another object of the present invention to provide an apparatus with a relatively low level of noise produced during operation.
Accordingly, the present invention provides a method of disintegrating lumped materials into smaller particles, comprising: continuously feeding into a vertical column a lumped material which can be reduced by disintegration into smaller particles; rotating about the axis of said column of material a lower portion of said column of material having a configuration of a truncated cone with a velocity gradient increasing away from the axis and at a maximum rotational speed remote from said axis to develop an active horizontal, annular disintegration zone immediately above said lower portion of the vertical column of material in which lumps of said material impact each other and disintegrate; and causing disintegrated ~8575 material from said lower portion to flow away outwardly and upwardly along the periphery of said column to allow continuous entry of lumped material into said disintegration zone and disintegrated material into said lower portion, said lumped material in said column above the level of said disintegration zone being held from rotation and establishing a pressure head of said lumped material on the material in said zone.
It is expedient that the circumferential speed at the periphery of the rotor should be set within a range from 10 to 70 m/s, to provide for dynamic action upon the material in the active disintegration zone.
It is also expedient that the pressure of the column of the material at the level of the uppermost surface of the rotor should be maintained within a range from 0.05 to 0.15 MPa.
The present invention further provides an apparatus for disintegrating lumped materials into smaller particles, comprising: means for containing a vertical column of a lumped material to be disintegrated; a rotatable conical bowl for receiving and rotating a portion of said column about the axis thereof, said conical bowl being provided with vertical partitions forming a plurality of chambers in the bowl; a zone immediately above the level of said conical bowl in which a portion of the column entrained by the portion in the bowl is free to rotate and in which lumps of the material impact each other causing them to disintegrate; and means for preventing the lumped material above the level of said zone from rotating.
~' ~8~75 It is desirable that the sections of the rotor should be defined by vertical partitions providing for acceleration of the material.
It is further desirable that an annular conical lug should be provided on the housing about the periphery of the active disintegration zone.
The apparatus of the abovespecified general structure provides for intense disintegration of a material with minimum energy consumption.
The essence of the invention is, as follows. The material is continuously fed into the apparatus of which the rotoris rotatedby the drlve means and which rotates, inits turn, the lower portion of a cylindrical vertical column of the material confined in the apparatus.
The material in the conical rotor is acted upon by centrifugal forces of which the value is determined by the angular speed, the mass of an individual lump and the distance from the axis of rotation, i.e.
C = m ~2- r, wherein C is a centrifugal force acting upon an individual lump of the material, having the mass "m" and rotated at an angular speed "~" at the distance "r" from the axis of rotation.
With the "m" and "r" values being constant, the value of the centrifugal force acting upon an individual lump is proportional to the square of the angular speed of the rotor, its vertical component equalling:
C tg~ , wherein " ~" is the angle defined by the rotor wall and a horizontal plane. With ~ = 45, the vertical component of the centrifugal force is numerically equal to its absolute value.
The angular speed of rotation of the rotor is set so that the pressure of the vertical component of the centrifugal source at the external wall of the rotor exceeds the pressure of the column confined in the apparatus to ensure permanent replacement of the material in the active zone.
The dynamic action is exerted upon the material in the active zone by the rotating rotor which transmits pulses of force to lumps of the material moving at different speeds. Lumps of the material, coming from the lower portion of the column into the sections of the rotor, are accelerated by the vertical partitions of the rotor and sent into the active zone. The lumps have a kinetic energy equalling mw2, wherein m is the mass of a lump, and w is its circumferential speed equalling the product of the angular speed of the rotor by the radius of rotation of the lump.
Since the lump driven by the centrifugal force into the active zone encounters therein the bulk of the material, it expands its kinetic energy on destruction of this material and delivering thereto an effort of force resulting in the material moving in the active zone.
Since the centrifugal force acting upon the material within the rotor is directly proportional to the radius of rota-tion, its minimum value is adjacent to the axis of rotation, and the maximum value is next to the periphery of the rotor. There-fore, the particles and lumps of ore are ousted away from the axis of rotation towards the periphery of the rotor and are lifted therein, whereby continuous renewal of the material in the active disintegration zone takes place.
The material disintegration duty in the active zone is defined by gradient of speed of the material in this active zone and by the pressure thereupon of the column of the material in the apparatus.
The circumferential speed at the periphery of the rotor is preferably set within a range from 10 to 70 m/s, whereby it - is ensured that the material is dynamically acted upon in the active disintegration zone. The optimum value of the circum-ferential speed for a material with given physical and mechanical properties is selected on the basis of test data obtained by experimenting with the parameters of the process.
The pressure of the material column at the level of the uppermost plane at the rotor is preferably maintained within a range from 0.05 to 0.15 MPa, which corresponds to a 2.5 to 7.5 m heiaht of the column of a material of 2-103 kg/m3 specific den-sity.
When the material is perticularly weak, the lower limit of the pressure may be lowered to 0.02 MPa.
Thus, the presently disclosed invention enhances the efficiency of the process of disintegration of a material, while at the same time substantially reducing the specific energy con-sumption, owing to the material having applied thereto intense dynamic loads transmitted by the particles and lumps of the material to one another.
Furthermore, the specific consumption of steel is like-wsie reduced, devoid as the apparatus performing the method is of grinding bodies and armour plates, to say nothing of the better working conditions of the components of the structure, engaged by the material being disintegrated.
Moreover, the amount of metal in the construction of the disintegrating apparatus is reduced, and the driving pattern thereof is simplified, which also enhances the efficiency of the process.
Worth mentioning is also the relatively low level of noise produced by the operating apparatus in accordance with the invention.
Other objects and advantages of the present invention will become apparent from the following detailed description of the performance of the herein disclosed method by an apparatus for 11~i8575 disintegrating a material, with reference being had to the accompanying drawings, wherein: ;
~ IG. 1 illustrates the principle of disintegration of a material, in accordance with the invention;
FIG. 2 is a longitudinal sectional view of the apparatus for disintegrating a material, embodying the invention; --FIG. 3 is a sectional view taken on line III-III of FIG. 2.
Referring now to the drawings, the apparatus (FIGS. 2 . .
and 3) comprises a vertical cylindrical steel housing 1 concen-trically and coaxially accommodating therein a shaft 2 journalled in bearing assemblies 3 and 4. The shaft 2 has mounted thereon a bowl-shaped rotor 5 shaped as a truncated conè. The internal space of the rotor 5 is divided into sections by vertical .. ~ :
partitions 6. In the lower portion of each section there is ~;~ provided an aperture i for feeding therethrough a pressurized ~
; carrier fluid (e.g. a liquid or gas) from a container 8 into ~ ;
~ ~ the respective section of the rotor 5. Mounted above the rotor -`~ 5 concentrically with the shaft 2 is a hollow cylinder 11 inter-- 20 connected with the housing 1 by vertical partitions 12 dividing ... .
the working space of the housing 1 into a plurality of adjoining chambers. The uppermost end of the shaft 2 is connected by means of a coupling 9 with a`drive 10 adapted to rotate the rotor 5.
.i , ,.~
The rotor 5 is so arranged with respect of the partltions 12 of the housing 1, that a zone "b" is left therebetween for active - disintegration of~the material. Secured to the housing 1 about the periphery of this active disintegration zone is a conical lug i~; 13 protecting the topmost exposed surface of the rotor from engage-- ment with lumps of the material being disintegrated.
The apparatus operates, as follows: the rotor 5 is put . .
in rotation by the drive motor, and the material to be disintegra-ted is continuously fed into the working space of the housing 1 ~"'' . ~
~ 857S
via a feed pipe 14, the material including both relatively big lumps and small particles. The greater portion of the working space of the housing 1 is thus permanently filled with the material confined in a cylindrical vertical column continuously replenished by the feed means (not shown), and continuously dis-charged via the delivery passage 15 in the form of either a pulp or a fluidized mass.
In the active disintegration zone "b" defined intermediate the topmost plane of the rotor 5 and the vertical partitions 12 of the housing 1 there takes place intense crushing and disin-tegration of the material, resulting from swift relative motion of layers and lumps striking one another and moving with respect of one another.
This actively disintegrated layer is permanently re-newed, since the action of the centrifugal forces upon its peripheral zone overcomes the weight of the column and lifts the material therein, while the innermost portions of the active layer descent to fill in the spaces evacuated in the sections of the rotating rotor. Disintegrated particles of the material are taken up by the ascending flow of the carrier fluid and are discharged from the working space of the apparatus either as a liquid suspension or pulp, or a gas-fluidized mass.
The rate of the discharge of the material is inter-dependent with its feed rate, so that the height of the material column in the working space of the apparatus is maintained practically at the same level, pre-set in accordance with the required conditions of the process.
To provide for continuous circulation of the material and for continuous renewal of the active layer, the upward pressure produced by the centrifugal action at the periphery of the bowl of the rotor should be higher than the downward pressure of the vertical column of the material, which is ensured X _ g _ by selecting an appropriate angular speed of the rotor 5.
In the herein disclosed apparatus the major portion of the supplied energy is spent on disintegrating the material in the active zone intermediate the rotating rotor and the vertical partitions of the housing. Consequently, the consump-tion of energy by disintegration of a material is substantially lower than in hitherto known ore mills wherein considerable amounts of energy are spent on lifting, moving and deforming permanent grinding bodies, linings or deflector plates.
The present invention can be utilized with high effectiveness in ore concentration plants where ferrous and non-ferrous ores are treated.
The invention can be utilized by various industries where raw materials are worked, e.g. by the mining industry, metallurgy of ferrous and non-ferrous metals, the chemical industry, etc.
Processes of crushing the grinding friable materials and broadly utilized by various industries using raw materials and working them by various methods in all types of equipment.
Nowadays the most widely utilized technique of disintegrating or reducing a material is its autogenous reduction in a confined space, e.g. in a rotating drum. According to this technique, lumps of the material are lifted in the vessel to a certain height and allowed to fall back under the action of gravity so as to cause them to break up.
A whole range of mills has been created, utilizing this technique.
A disadvantage of the method of autogenous disintegration of a material in a rotary drum is its inherent relatively low specific throughput and inadequate efficiency.
This is explained by the fact that the material is to be lifted to a certain height, so as to supply it with an amount of energy sufficient for its self-destruction.
There is also known a method of disintegrating a material ~ -2- `~
~ ~ r accelerated in a centrifugal bowl-shaped rotor and directed against deflection plates effecting its destruction.
However, this method has a number of disadvantages.
Among them is a relatively high energy consumption, and also excessive wear of the assemblies and components of the structure which have to withstand impact loads.
The main object of the present invention is to provide a method of continuous disintegration of a material by dynamic loads which should increase the intensity and efficiency of the process.
It is another object of the present invention to provide an apparatus for dynamic disintegration of a material which should be of a simple construction and offer high through-put.
It is also an object of the present invention to reduce the specific amount of metal in an apparatus for dis-integrating materials.
It is still another object of the present invention to provide an apparatus with a relatively low level of noise produced during operation.
Accordingly, the present invention provides a method of disintegrating lumped materials into smaller particles, comprising: continuously feeding into a vertical column a lumped material which can be reduced by disintegration into smaller particles; rotating about the axis of said column of material a lower portion of said column of material having a configuration of a truncated cone with a velocity gradient increasing away from the axis and at a maximum rotational speed remote from said axis to develop an active horizontal, annular disintegration zone immediately above said lower portion of the vertical column of material in which lumps of said material impact each other and disintegrate; and causing disintegrated ~8575 material from said lower portion to flow away outwardly and upwardly along the periphery of said column to allow continuous entry of lumped material into said disintegration zone and disintegrated material into said lower portion, said lumped material in said column above the level of said disintegration zone being held from rotation and establishing a pressure head of said lumped material on the material in said zone.
It is expedient that the circumferential speed at the periphery of the rotor should be set within a range from 10 to 70 m/s, to provide for dynamic action upon the material in the active disintegration zone.
It is also expedient that the pressure of the column of the material at the level of the uppermost surface of the rotor should be maintained within a range from 0.05 to 0.15 MPa.
The present invention further provides an apparatus for disintegrating lumped materials into smaller particles, comprising: means for containing a vertical column of a lumped material to be disintegrated; a rotatable conical bowl for receiving and rotating a portion of said column about the axis thereof, said conical bowl being provided with vertical partitions forming a plurality of chambers in the bowl; a zone immediately above the level of said conical bowl in which a portion of the column entrained by the portion in the bowl is free to rotate and in which lumps of the material impact each other causing them to disintegrate; and means for preventing the lumped material above the level of said zone from rotating.
~' ~8~75 It is desirable that the sections of the rotor should be defined by vertical partitions providing for acceleration of the material.
It is further desirable that an annular conical lug should be provided on the housing about the periphery of the active disintegration zone.
The apparatus of the abovespecified general structure provides for intense disintegration of a material with minimum energy consumption.
The essence of the invention is, as follows. The material is continuously fed into the apparatus of which the rotoris rotatedby the drlve means and which rotates, inits turn, the lower portion of a cylindrical vertical column of the material confined in the apparatus.
The material in the conical rotor is acted upon by centrifugal forces of which the value is determined by the angular speed, the mass of an individual lump and the distance from the axis of rotation, i.e.
C = m ~2- r, wherein C is a centrifugal force acting upon an individual lump of the material, having the mass "m" and rotated at an angular speed "~" at the distance "r" from the axis of rotation.
With the "m" and "r" values being constant, the value of the centrifugal force acting upon an individual lump is proportional to the square of the angular speed of the rotor, its vertical component equalling:
C tg~ , wherein " ~" is the angle defined by the rotor wall and a horizontal plane. With ~ = 45, the vertical component of the centrifugal force is numerically equal to its absolute value.
The angular speed of rotation of the rotor is set so that the pressure of the vertical component of the centrifugal source at the external wall of the rotor exceeds the pressure of the column confined in the apparatus to ensure permanent replacement of the material in the active zone.
The dynamic action is exerted upon the material in the active zone by the rotating rotor which transmits pulses of force to lumps of the material moving at different speeds. Lumps of the material, coming from the lower portion of the column into the sections of the rotor, are accelerated by the vertical partitions of the rotor and sent into the active zone. The lumps have a kinetic energy equalling mw2, wherein m is the mass of a lump, and w is its circumferential speed equalling the product of the angular speed of the rotor by the radius of rotation of the lump.
Since the lump driven by the centrifugal force into the active zone encounters therein the bulk of the material, it expands its kinetic energy on destruction of this material and delivering thereto an effort of force resulting in the material moving in the active zone.
Since the centrifugal force acting upon the material within the rotor is directly proportional to the radius of rota-tion, its minimum value is adjacent to the axis of rotation, and the maximum value is next to the periphery of the rotor. There-fore, the particles and lumps of ore are ousted away from the axis of rotation towards the periphery of the rotor and are lifted therein, whereby continuous renewal of the material in the active disintegration zone takes place.
The material disintegration duty in the active zone is defined by gradient of speed of the material in this active zone and by the pressure thereupon of the column of the material in the apparatus.
The circumferential speed at the periphery of the rotor is preferably set within a range from 10 to 70 m/s, whereby it - is ensured that the material is dynamically acted upon in the active disintegration zone. The optimum value of the circum-ferential speed for a material with given physical and mechanical properties is selected on the basis of test data obtained by experimenting with the parameters of the process.
The pressure of the material column at the level of the uppermost plane at the rotor is preferably maintained within a range from 0.05 to 0.15 MPa, which corresponds to a 2.5 to 7.5 m heiaht of the column of a material of 2-103 kg/m3 specific den-sity.
When the material is perticularly weak, the lower limit of the pressure may be lowered to 0.02 MPa.
Thus, the presently disclosed invention enhances the efficiency of the process of disintegration of a material, while at the same time substantially reducing the specific energy con-sumption, owing to the material having applied thereto intense dynamic loads transmitted by the particles and lumps of the material to one another.
Furthermore, the specific consumption of steel is like-wsie reduced, devoid as the apparatus performing the method is of grinding bodies and armour plates, to say nothing of the better working conditions of the components of the structure, engaged by the material being disintegrated.
Moreover, the amount of metal in the construction of the disintegrating apparatus is reduced, and the driving pattern thereof is simplified, which also enhances the efficiency of the process.
Worth mentioning is also the relatively low level of noise produced by the operating apparatus in accordance with the invention.
Other objects and advantages of the present invention will become apparent from the following detailed description of the performance of the herein disclosed method by an apparatus for 11~i8575 disintegrating a material, with reference being had to the accompanying drawings, wherein: ;
~ IG. 1 illustrates the principle of disintegration of a material, in accordance with the invention;
FIG. 2 is a longitudinal sectional view of the apparatus for disintegrating a material, embodying the invention; --FIG. 3 is a sectional view taken on line III-III of FIG. 2.
Referring now to the drawings, the apparatus (FIGS. 2 . .
and 3) comprises a vertical cylindrical steel housing 1 concen-trically and coaxially accommodating therein a shaft 2 journalled in bearing assemblies 3 and 4. The shaft 2 has mounted thereon a bowl-shaped rotor 5 shaped as a truncated conè. The internal space of the rotor 5 is divided into sections by vertical .. ~ :
partitions 6. In the lower portion of each section there is ~;~ provided an aperture i for feeding therethrough a pressurized ~
; carrier fluid (e.g. a liquid or gas) from a container 8 into ~ ;
~ ~ the respective section of the rotor 5. Mounted above the rotor -`~ 5 concentrically with the shaft 2 is a hollow cylinder 11 inter-- 20 connected with the housing 1 by vertical partitions 12 dividing ... .
the working space of the housing 1 into a plurality of adjoining chambers. The uppermost end of the shaft 2 is connected by means of a coupling 9 with a`drive 10 adapted to rotate the rotor 5.
.i , ,.~
The rotor 5 is so arranged with respect of the partltions 12 of the housing 1, that a zone "b" is left therebetween for active - disintegration of~the material. Secured to the housing 1 about the periphery of this active disintegration zone is a conical lug i~; 13 protecting the topmost exposed surface of the rotor from engage-- ment with lumps of the material being disintegrated.
The apparatus operates, as follows: the rotor 5 is put . .
in rotation by the drive motor, and the material to be disintegra-ted is continuously fed into the working space of the housing 1 ~"'' . ~
~ 857S
via a feed pipe 14, the material including both relatively big lumps and small particles. The greater portion of the working space of the housing 1 is thus permanently filled with the material confined in a cylindrical vertical column continuously replenished by the feed means (not shown), and continuously dis-charged via the delivery passage 15 in the form of either a pulp or a fluidized mass.
In the active disintegration zone "b" defined intermediate the topmost plane of the rotor 5 and the vertical partitions 12 of the housing 1 there takes place intense crushing and disin-tegration of the material, resulting from swift relative motion of layers and lumps striking one another and moving with respect of one another.
This actively disintegrated layer is permanently re-newed, since the action of the centrifugal forces upon its peripheral zone overcomes the weight of the column and lifts the material therein, while the innermost portions of the active layer descent to fill in the spaces evacuated in the sections of the rotating rotor. Disintegrated particles of the material are taken up by the ascending flow of the carrier fluid and are discharged from the working space of the apparatus either as a liquid suspension or pulp, or a gas-fluidized mass.
The rate of the discharge of the material is inter-dependent with its feed rate, so that the height of the material column in the working space of the apparatus is maintained practically at the same level, pre-set in accordance with the required conditions of the process.
To provide for continuous circulation of the material and for continuous renewal of the active layer, the upward pressure produced by the centrifugal action at the periphery of the bowl of the rotor should be higher than the downward pressure of the vertical column of the material, which is ensured X _ g _ by selecting an appropriate angular speed of the rotor 5.
In the herein disclosed apparatus the major portion of the supplied energy is spent on disintegrating the material in the active zone intermediate the rotating rotor and the vertical partitions of the housing. Consequently, the consump-tion of energy by disintegration of a material is substantially lower than in hitherto known ore mills wherein considerable amounts of energy are spent on lifting, moving and deforming permanent grinding bodies, linings or deflector plates.
The present invention can be utilized with high effectiveness in ore concentration plants where ferrous and non-ferrous ores are treated.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of disintegrating lumped materials into smaller particles, comprising: continuously feeding into a vertical column a lumped material which can be reduced by disintegration into smaller particles; rotating about the axis of said column of material a lower portion of said column of material having a configuration of a truncated cone with a velocity gradient increasing away from the axis and at a maximum rotational speed remote from said axis to develop an active horizontal, annular disintegration zone immediately above said lower portion of the vertical column of material in which lumps of said material impact each other and disintegrate; and causing disintegrated material from said lower portion to flow away outwardly and upwardly along the periphery of said column to allow continuous entry of lumped material into said disintegration zone and disintegrated material into said lower portion, said lumped material in said column above the level of said disintegration zone being held from rotation and establishing a pressure head of said lumped material on the material in said zone.
2. A method of disintegrating lumped materials into smaller particles according to claim 1, in which a fluid is introduced into said lower portion of said column of material to cause said disintegrated material to flow along said periphery of the column.
3. A method of disintegrating lumped materials into smaller particles according to claim 2, in which the disintegrated material flowing outwardly and upwardly along the periphery of the column is continuously removed from said column.
4. A method of disintegrating lumped materials into smaller particles according to claim 1, in which the material in said lower portion of said column is driven rotationally at an angular velocity in the range of 10 to 70 µm./sec to ensure a kinetic energy to propel the material from said zone at from 50 to 2,450 joule/kg in dependence upon the material being disintegrated.
5. A method of disintegrating lumped materials into smaller particles according to claim 1, in which a pressure of material in said column above the level of said lower portion is maintained within 0.02 to 0.10 MPa.
6. An apparatus for disintegrating lumped materials into smaller particles, comprising: means for containing a vertical column of a lumped material to be disintegrated;
a rotatable conical bowl for receiving and rotating a portion of said column about the axis thereof, said conical bowl being provided with vertical partitions forming a plurality of chambers in the bowl; a zone immediately above the level of said conical bowl in which a portion of the column entrained by the portion in the bowl is free to rotate and in which lumps of the material impact each other causing them to disintegrate; and means for preventing the lumped material above the level of said zone from rotating.
a rotatable conical bowl for receiving and rotating a portion of said column about the axis thereof, said conical bowl being provided with vertical partitions forming a plurality of chambers in the bowl; a zone immediately above the level of said conical bowl in which a portion of the column entrained by the portion in the bowl is free to rotate and in which lumps of the material impact each other causing them to disintegrate; and means for preventing the lumped material above the level of said zone from rotating.
7. An apparatus for disintegrating lumped materials into smaller particles according to claim 6, in which said conical bowl has perforations in a lower part thereof to enable a fluid to be introduced into said bowl, means being provided for removing fluidized material from said zoner
8. An apparatus for disintegrating lumped materials into smaller particles according to claim 6, in which said means defining said zone is annular and has a frusto-conical configuration.
9. An apparatus for disintegrating lumped materials into smaller particles according to claim 6, in which said means for containing a vertical column of lumped materials comprises a vertical housing having stationary, angularly spaced vertical partitions defining said means holding the lumped material above the level of said zone from rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA289,999A CA1108575A (en) | 1977-11-01 | 1977-11-01 | Method of disintegrating a material and apparatus for performing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA289,999A CA1108575A (en) | 1977-11-01 | 1977-11-01 | Method of disintegrating a material and apparatus for performing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1108575A true CA1108575A (en) | 1981-09-08 |
Family
ID=4109914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA289,999A Expired CA1108575A (en) | 1977-11-01 | 1977-11-01 | Method of disintegrating a material and apparatus for performing same |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1108575A (en) |
-
1977
- 1977-11-01 CA CA289,999A patent/CA1108575A/en not_active Expired
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