UA8100U - Device for crushing of metal-containing raw materials - Google Patents

Abstract

A device for crushing metal-containing raw material contains a crushing chamber with a system of pneumatic separation, which consists of vertical cylindrical housing with loading hole for the raw material containing metal and unloading channels for the ground products of light and heavy fractions, inside which on the vertical shaft the rotary disk is located with blades radially mounted on its upper surface with hard-alloy elements and conical cutter. The rotary disk is equipped with blades located on the lower surface of the rotary disk. On the upper surface of the rotary disk, on its periphery a circular lug is made, in which the blades rest. In this case, the internal surface of annular lug on the areas between the blades is connected with the surface of rotary disk on the inclined plane. The system of pneumatic separation contains connected together cone-shaped container with upper and lower branch pipes for the ground product of light fraction and vertical tubular container, the latter out of which is connected with the unloading channel for the ground product of light fraction executed in the peripheral part of the upper end wall of the crushing chamber casing, and a chamber of increased pressure formed in the space between rotary disk and lower end wall of the housing of said crushing chamber with an opening connected with the atmosphere. The blades, which are executed in the form of rectangular prism, have at the basisa slant from the side of their free end. In this case, the length of blades and the diameter of basis of conical cutter makes respectively not more than 0.25 and 0.5 of diameter of the rotary disk. The angle of inclination of the generatrix of conical cutter is not less than 45 degrees, and unloading channel for the ground product of the heavy fraction is executed in the peripheral part of the lower end wall of the chamber casing of increased pressure.

Description

Description of the invention

The useful model refers to the field of ferrous metallurgy and can be used in the processing of waste 2 of metallurgical production for the extraction of iron-containing inclusions (scrap) from metallurgical slags and the enrichment of ores and precious metals.

The well-known rotor of an impact crusher according to Russian patent No. 2188075 MIPK7 802 C 7/08, publ. 27.08.2002, which contains a crushing chamber, which consists of a vertical cylindrical body with a loading hole for metal-containing raw materials and unloading channels for crushed products of light and 70 heavy fractions, inside which a rotating disk is placed on a vertical shaft with vanes radially installed on its upper surface with carbide elements.

The centrifugal impact mill is also known under Russian patent Mo2002120520, МПК7 802 С 13/18, publ. 20.01.2004, which contains a crushing chamber, which consists of a vertical cylindrical body with a loading hole for metal-containing raw materials and unloading channels for crushed products of light and 12 heavy fractions, inside of which a rotating disk is placed on a vertical shaft with blades radially installed on its upper surface with carbide elements and a conical cutter.

The closest analogue, in terms of the set of features and the expected technical result, to the claimed useful model is the Titan D dental crusher with double feeding | see prospectus attached to the application materials "New technologies" mlum/.pem/-Ieppoiodiyev.gy, 20041, which contains a crushing chamber with a pneumatic separation system, which consists of a vertical cylindrical body with a loading hole for metal-containing raw materials and unloading channels for crushed light products and heavy fraction, inside which a rotating disk with blades with hard alloy elements radially installed on its upper surface and a conical cutter is placed on a vertical shaft.

The general disadvantage of the above devices is low reliability, which is due to the fact that when removing 22 M metal-containing pieces, the size of which exceeds the gap between the chamber wall and the rotating disk, there is a possibility of its jamming and possible breakages. When the moisture content of the raw material is more than 495, the self-lined sections of the rotating disk and the working chamber will be cemented with crushed raw materials, until the effect of self-jamming and imbalance of the rotating disk is formed.

The useful model is based on the task of improving the device for grinding metal-containing raw materials by changing the design of the device elements, eliminating the process of self-sealing of crushed raw materials on the working bodies of the device, and thereby increasing its reliability and durability.

The problem is solved by the fact that in the device for grinding metal-containing raw materials, which contains a chamber - grinding with a pneumatic separation system, which consists of a vertical cylindrical body with a loading hole for metal-containing raw materials and unloading channels for crushed products of light and heavy fractions, inside of which on a rotating disk with blades with carbide elements radially installed on its upper surface and a conical cutter, according to a useful model, the rotating disk is equipped with blades placed on the lower surface of the rotating disk, on the upper surface of the rotating disk, an annular projection is made on its periphery, against which the blades rest, while the inner surface of the annular protrusion in the areas between the blades is connected to the surface of the rotating disk along an inclined plane, the pneumatic separation system contains a conical container connected to each other with upper and lower discharge nozzles for the crushed product fraction and a vertical tubular container, the latter

of which is connected to the discharge channel for the crushed product of the light fraction made in the peripheral part of the upper end wall of the grinding chamber housing, and the high-pressure chamber formed in the space between the rotating disc and the lower end wall of the said grinding chamber housing with an opening communicating with the atmosphere, blades, which are made in the shape of a rectangular prism, have a bevel at the base from the side of its free end, while the length of the blades and the diameter of the base of the conical cutter, respectively, are taken no more than 0.25 and 0.5 of the diameter of the rotating disk, the angle of inclination of the forming conical cutter is taken at least 45 degrees, and the unloading channel for the crushed product of the heavy fraction is made in the peripheral part of the lower end wall of the high-pressure chamber housing. o 20 The ring protrusion is made at a height not less than the height of the blades.

The limit parameters of the length of the blades are established experimentally, taking into account the active zone of destruction of the raw material. When the length of the blades is increased by more than 0.25 of the diameter of the rotating disk, the performance of the device remains the same, and the weight of the rotating disk increases.

If the diameter of the base of the conical cutter is taken to be no more than 0.5 of the diameter of the rotating disc, it is ensured

SS o5 is the optimal working gap between the inner surface of the grinding chamber housing and the blades.

At an angle of inclination of the forming cutter of at least 45 degrees, the most effective circulation movement of metal-containing raw materials in the crushing chamber is ensured, in which sticking and self-sealing of the crushed raw materials on the working organs of the device are not observed.

The execution on the periphery of the rotating disk of an annular projection against which the blades rest, the inner surface 60 of which in the areas between the blades is connected to the surface of the rotating disk along an inclined plane ensures that in the process of grinding raw materials, the return of non-standard raw materials to the grinding chamber by means of a cyclic shock effect on the grinding raw materials , in which the non-standard raw material of a large fraction is reflected by an inclined plane and a ring protrusion on the surface of the conical cutter, with the help of which the raw material being crushed is fed into the active zone of the crushing chamber and is separated as the crushing progresses. This provides an optimal mode of cyclic impact crushing of metal-containing raw materials and its separation.

The execution of blades in the shape of a rectangular prism, which have a bevel at the base on the side of its free end, at the same level as the ring protrusion, ensures the optimal grinding mode of metal-containing raw materials, in which sticking and self-sealing of the grinding raw materials to the working organs of the grinding chamber is not observed.

The essence of the invention is explained by the drawings, where on:

Fig. 1 shows a general view of the device for crushing metal-containing raw materials;

Fig. 2 - a device for crushing metal-containing raw materials in a cross section (view A); 70 Fig. 3 - section of the rotating disk of the device for crushing metal-containing raw materials (top view).

The device for grinding metal-containing raw materials contains a grinding chamber 1 with a pneumatic separation system, which consists of a vertical cylindrical body 2 with a loading axial opening C for metal-containing raw materials and an unloading channel for crushed products of light 4 and heavy 5 fractions. Inside the grinding chamber 1, on the vertical shaft 6, there is a rotating disc 7 with blades 8 with hard alloy elements 9 and a conical cutter 10 installed radially /5 on its upper surface.

The rotating disc 7 is equipped with blades 11, located on the lower surface of the rotating disc 7. On the upper surface of the rotating disc 7, on its periphery, there is an annular protrusion 12, against which the blades 8 rest.

The inner surface of the annular protrusion 12 in the areas between the blades 8 is connected to the surface of the rotating disc 7 along the inclined plane 13. The pneumatic separation system includes a conical container 14 2o connected to each other with its upper 15 and lower 16 discharge nozzles for the crushed product of the light fraction and a vertical tubular container 17. The tubular container 17 is connected to the unloading channel 4 for the crushed product of the light fraction, made in the peripheral part of the upper end wall 18 of the body 2 of the crushing chamber 1.

The pneumatic separation system also contains a chamber 19 of increased pressure, formed in the gap between the rotating disc 7 and the lower end wall 20 of the body 2 of the mentioned crushing chamber 1 with an opening 21, communicated to the atmosphere. Blades 8, made in the shape of a rectangular prism, have a base bevel 22 on the side of its free end. The length of the blades 8 is taken no more than 0.25 of the diameter of the rotating disk 7. The diameter of the base of the conical cutter t is taken no more than 0.5 of the diameter of the rotating disk 7. The angle of inclination of the forming conical cutter 10 is taken at least 45 degrees. Channel 5 for the crushed product of the heavy fraction is made in the peripheral part of the lower end wall 20 of the body 2 of the grinding chamber 1. The annular protrusion 12 is made in height at least o

From the blades 8. An electric drive 23 is used to rotate the disc 7.

The device for crushing metal-containing raw materials works in the following way. at

The device for crushing metal-containing raw materials is brought into working condition beforehand. Why "- include the drive 23 of the rotating disk 7. After that, metal-containing raw materials are fed into the grinding chamber 1 with a uniform flow through the loading axial hole C. co

Under the influence of centrifugal force, the metal-containing raw material is thrown to the peripheral area of the rotating disk 7, that is, the rotor, with the help of an inclined plane 13 and a bevel 22, the direction of movement of the crushed material changes from horizontal to inclined within 40 to 50 degrees. At the same time, the trajectory of the flight of "metal-containing raw materials being crushed" will be directed to the upper part of the crushing chamber 1, during which the process of self-sealing of the crushed raw materials on its inner surface is excluded. The raw material that C is crushed, having reached the upper end wall 18 of the body 2 of the grinding chamber 1, returns under the action of the forces of weight and elastic properties to the working zone of the grinding chamber 1, by rolling over the surface of the cone-shaped cutter 10, onto the blades 8 of the rotating disk 7, colliding with this with other particles;" raw materials that are crushed. Particles of raw materials being crushed in the crushing chamber 1 make both a gradual movement along the toroidal surface and a proper rotation around the axis of inertia of this particle. Such a complex movement of the particles of the raw material being crushed in the crushing chamber 1 ensures the destruction of these particles with

Go! by giving them a form in the form of a sphere. In particular, this form is obtained by metal inclusions that are present in the raw material. - The product crushed to a dusty so-called light fraction, having passed through the area of shock loads, reaches the unloading channel 4 under the crushed product of the light fraction and flies out under the action of the pressure of the air flow 5r, into the tubular container 17 and then into the conical container 14 of the pneumatic separation system. The flow of air, in the high-pressure chamber 19 under the pressure of which the light dust-like fraction of the crushed product enters through the unloading channel 4 in the pneumatic separation tank 17, will be formed by the rotation of the blades 11 installed on the lower surface of the rotating disk 7. At the same time, atmospheric air through the hole 21 in the end wall 20 is sucked and fed into the annular gap formed between the body of the grinding chamber 1 and the rotating disc

Gun 7. Because the mentioned annular gap is constantly communicated with the high-pressure chamber, the pieces of material being crushed, large in size, under the influence of the pressure of the chamber 19 and the rotating disk 7 with blades 8, as well as the inclined plane 13, are returned back to the active zone grinding chamber 1. Thus, the possibility of jamming of the rotating disc and possible breakdowns is excluded.

The crushed raw material consists of both strong and weak minerals, so under the impact of shock loads, they will be broken into very small (weak) and large (strong) particles.

As a result, in the pneumoseparation system, these particles will be divided into two streams, strong ones that will be discharged through the lower outlet pipe 16 and small ones that will be carried by the air flow to the upper outlet pipe 15.

The length of the blades is taken no more than 0.25 times the diameter of the rotating rotor 7 taken into account on the basis of the active zone b5 for the destruction of the raw material under the impact of shock loads. In this case, an increase in the length of the blades, more than 0.25 of the diameter of the rotating disc 7 does not provide an increase in the productivity of the crusher, but increases the weight of the rotating disc, which creates an additional load on the motor of the rotating disc 7.

The diameter of the base of the conical cutter is taken to be no more than 0.5 of the diameter of the rotating disk, assuming that the area formed does not overlap the working area of the blades 8.

The angle of inclination of the forming cone cutter 14 is taken at least 45 degrees, which ensures that the non-standard particles roll down the forming cone cutter into the working part of the grinding chamber 1.

The claimed device for grinding metal-containing raw materials provides an optimal mode of repeated cyclic grinding of raw materials with simultaneous separation, in which a crushed product in the form of a heavy fraction concentrate containing up to 8095 /o of Iron is obtained at the outlet of the unloading channel 5. At the outlet of unloading channel 4, a crushed product is obtained in the form of a light fraction concentrate containing 3090 iron. At the outlet of the upper discharge pipe 15, a crushed product is obtained in the form of a dusty fraction containing 595% iron, which is used as a raw material for preparing building mix, etc. materials At the exit of the diverting pipe 16, a concentrate of dusty fraction containing 6095 iron is obtained. sh 17 is Kk 78 g tya h ! and - in | 16

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Claims (2)

Formula of the invention C; at 1. A device for grinding metal-containing raw materials, containing a grinding chamber with a pneumatic separation system, which consists of a vertical cylindrical body with a loading hole for metal-containing raw materials and unloading channels for crushed products of light and heavy fraction, inside of which a rotating disk with radially installed on its upper surface with vanes with hard alloy elements and a conical cutter, which differs in that the rotating disk is equipped with blades placed on the lower surface of the rotating disk, on the upper surface of the rotating disk, on its periphery, a ring protrusion is made on which the vanes rest, while the inner surface of the annular protrusion in the areas between the blades is connected to the surface of the rotating disc along an inclined plane, the pneumatic separation system contains a connected conical container with upper and lower outlet 65 nozzles for the crushed product of the light fraction and a vertical a tubular container, the last of which is connected to the unloading channel for the crushed product of the light fraction, made in the peripheral part of the upper end wall of the grinding chamber housing, and a high pressure chamber formed in the space between the rotating disc and the lower end wall of the said grinding chamber housing with an opening , connected to the atmosphere, the blades, which are made in the shape of a rectangular prism, have a bevel at the base on the side of its free end, while the length of the blades and the diameter of the base of the conical cutter, respectively, are taken no more than 0.25 and 0.5 of the diameter of the rotating disk, the angle of inclination of the conical cutter is taken at least 45 degrees, and the unloading channel for the crushed product of the heavy fraction is made in the peripheral part of the lower end wall of the high-pressure chamber housing. 2. The device for crushing metal-containing raw materials according to claim 1, which is characterized by the fact that the ring protrusion 7/0 is made in height not less than the height of the blades. Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2005, M 7, 15.07.2005. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. that 2 "c) "c) "- (ee) . and? (ee) - («c) (42) So 60 b5