CN85101784A

CN85101784A - The liner that is used for ball mill

Info

Publication number: CN85101784A
Application number: CN 85101784
Authority: CN
Inventors: 皮切奥梅尔佐勒
Original assignee: Voestalpine AG
Current assignee: Voestalpine AG
Priority date: 1985-04-01
Filing date: 1985-04-01
Publication date: 1987-01-10
Also published as: CN85101784B

Abstract

Invention is about the liner that is used for the cylindrical pellet grinding machine (16).In fabricated structure, this liner (16) has groove (4) and muscle (9), and groove (4) is roughly continuous in a circumferential direction, and muscle (9) is arranged between the groove (4), also have bossing (6) and/or negative area (7) in addition, their relative circumferencial directions are transversely arranged.Allow like this between ball and groove, to finish grind fully.By bossing (6) and/or negative area (7), ball is swelled to higher place, and in the ball heap, ball is stirred better to finish corase grind.In general, grinding efficiency improves greatly.

Description

The liner that is used for ball mill

The invention relates to the liner that is used for the garden tube ball mill.Such tube ball mill is called as tube mill, and the liner of above-mentioned tube mill is made up of iron plate usually.If liner is smooth, between ball and liner, only there is the some contact.Because smooth liner, the milling effect between ball and liner is very low, because ball stirred seldom, so the effect of milling between ball and the ball is quite low in the ball heap.Because ball directly contacts liner, so the noise that produces is just quite big.People know, to liner groove is set, this groove roughly is continuous in a circumferential direction, as in sectional view, seeing, groove has the profile of the radius of curvature of showing shown in the figure, in known ball mill, this groove radius of curvature is roughly consistent with the radius of curvature of biggest ball, and figure has represented that also muscle is between groove.In these grooves, stoped the material that pulverized play in a lateral direction basically at groove.The material of being milled is maintained in the groove, as the transition zone between liner and the ball.Like this, between ball and the groove, formed the line contact between ball and the quilt material of milling on the other hand on the one hand.In fact, the milling efficiency between ball and the liner improves widely, and since by the material of being milled between liner and ball, thereby reduced sizable noise.Material by the quilt that is contained in the ball mill is milled acts on crushing force on the ball, and when rotating, ball is also made minor rotation together, so that the ball heap is stirred to a certain degree, yet this does not reach enough effects of milling in the ball heap.Thereby the effect of milling only mainly obtains between the groove of ball and liner.Said structure is called decorative pattern iron plate.People also know, equip a smooth liner without any groove, but projection and the negative area transversely arranged with respect to circumferencial direction are arranged, because projection and negative area are pushed to ball come, just claim lift portion.On the direction that ball mill rotates, ball is rotated together by lift portion.Ball is just being stirred fully like this, then just obtains very big milling efficiency in the ball heap.Ball is topmost thrown down, and percussion ball row.The percussion that the percussion ball produces, the bulky material that the result will be milled pulverizes.In such structure, contacting between ball and the liner is a contact, and the result has between ball and liner to the low-down effect of milling, even the effect that can not get milling.And then ball is with regard to the exposed liner of percussion, thereby sends very big noise.In these two kinds of structures, promptly in having the inner lining structure of groove and having in the inner lining structure of lift portion, milling efficiency all is unfavorable.

The objective of the invention is to improve milling efficiency.In order to address this problem, the present invention is the combination by each known features basically, and being lined with groove in promptly has muscle, and groove is continuous in a circumferential direction basically, and muscle is between groove; In that transversely arranged projection and/or negative area are arranged with respect to circumferencial direction, in this structure, along helical curve, groove just in a circumferential direction and even roughly in a circumferential direction can be continuous.Based on structure of the present invention, the advantage of the liner that has continuous groove in a circumferential direction and the advantage with liner of lift portion are mutually combined, and do not have the shortcoming of these two kinds of structures.Being placed on groove by one deck material of being ground and forming between the outermost ball.Can the material of being milled be finish grinded like this, and in fact the noise that produces has reduced.Because lift portion, ball and the material of being milled are swelled to higher position on the direction that ball mill rotates together.In the ball heap, ball and the material of being milled are stirred consumingly, so that improve the corase grind in the ball heap.At rotation process, high ball is thrown on the alley respectively.Therefore, the impact forces of generation is that the material of not milled that is in because of its low-gravity on the ball heap is pulverized.In addition, also improved the stirring of the ball in the ball heap.In the ball heap, the material of being milled is roughly ground between ball and ball, and in groove, the material of being milled finish grindes between liner and ball.In a word, improved milling efficiency, reduced the wearing and tearing of liner and reduced noise.

According to the present invention, on the bottom surface of groove and/or on muscle, be preferably formed as projection and negative area.Owing on the bottom surface of groove and/or on muscle, form bossing and/or negative area, can shift ball onto on the direction that ball mill rotates higher position.Improve the stirring of ball heap, and utilize the impact forces of ball collision alley, reach the purpose of milling.According to most preferred embodiment of the present invention, on the direction of groove, make the bottom surface of groove and/or the fusiformis corrugate of muscle.The wavy texture of the bottom surface of groove and/or the shuttle of muscle has improved the possibility of ball being shifted onto higher position, but also has such advantage simultaneously, and promptly ball rotates in the profile of groove imperturbably, and does not disturb vibrations, so that finish grind in groove.This structure is preferably such, and at bossing and/or the negative area and the ripple of the bottom of groove, projection on the shuttle of muscle and negative area continue respectively, and the bossing of bottom land, negative area and ripple are disposed on the identical bus of liner.The result has produced such advantage, no matter the i.e. high low degree of negative area and bossing, it is equal that the degree of depth of groove roughly keeps, so that ball is remained in the groove.According to most preferred embodiment of the present invention, groove has identical cross-sectional profiles on the whole circumference of liner, and the material that is placed in the groove of being milled is milled broken on whole length of groove equably.Between ball and groove, will can not interrupt by the formed intermediate layer of material of being milled.Maintenance is destroyed by the noise attenuation layer one that is formed by the material of being milled, and again because the bellows-shaped of the shuttle of bottom land and muscle, when ball mill rotated, ball is rotation therewith reliably.Certainly, the bump alley has produced some noises, and still, by broken mill material bed in groove, noise is reduced significantly.

Usually, liner is made up of each plate, and promptly so-called iron plate is formed.In a circumferential direction, the iron plate that is in contact with one another forms an arch, and in this arch, these iron plates all remain on their position.According to most preferred embodiment of the present invention, in the liner of this form, iron plate is separated in the crest of waveform and valley regions respectively, and iron plate is thicker than the position at trough in the position of crest respectively.Owing at crest plate is separated, improves arching by the thicker part of iron plate.Special benefits of the present invention is not have screw on the liner, utilizes arching that iron plate is fixed on the wall of tube mill because in no Screw hole structure only be.

In the accompanying drawings, with embodiment the present invention is described roughly.

Accompanying drawing is represented is an iron plate that is used for forming the liner of tube mill.

Accompanying drawing 1: the sectional view of opening along the line I-I in the accompanying drawing 2;

Accompanying drawing 2: the vertical view on the direction of the arrow II in accompanying drawing 1;

Accompanying drawing 3: the sectional view that sections along the line III-III in the accompanying drawing 2;

Attached Figure 4 and 5 are represented a tubular type pulverizer that liner is arranged;

Accompanying drawing 4: the sectional view that sections along the line IV-IV in the accompanying drawing 5;

Accompanying drawing 5: the sectional view that sections along the line V-V in the accompanying drawing 4.

The outer surface (1) of iron plate (2) is columniform, and the radius of outer surface (1) is equivalent to the outer incurvature radius of tube mill.The inner surface (3) of iron plate (2) has groove (4), and the bottom surface (5) of groove (4) is rugose in a circumferential direction.Iron plate (2) at the thickness of the position of crest (6) than thick in the position of trough (7).According to cross section shown in Figure 1, the shuttle (8) that is arranged in the muscle (9) between the groove forms wavy and continuous equally, and shuttle (8) is equidistant with respect to bottom land (5).The cross-sectional profiles (10) of groove (4) respectively on the whole circumference of liner with all be the same on whole length at groove.(11) are located in the side, because these sides nestle up adjacent iron plate (2), muscle (9) only has half of muscle (9) width.Make the axis direction deflection of the relative tube mill in front (12) that limits iron plate (2) in a circumferential direction, and prolong diametrically.When these iron plates (2) assembling is come, just formed arching, particularly, make arching be in stress state because front surface (12) is set at the zone of trough (6).

Hole (13) is used for an iron plate (2) spiral and installs on the tube mill, because quite thick on the iron plate (2) in the zone of trough (6), this hole (13) can save, in this case, in the shell of tube mill, only fix iron plate (2) by arching.

Fig. 4 and Fig. 5 respectively with cross section and longitudinal cross-section represented be tubular type pulverizer or ball mill.In cydariform shell (14), shell (14) is driven in rotation on the direction of arrow (15) indication, and in shell (14), liner (16) is to be combined to iron plate shown in Figure 3 (2) by Fig. 1.These iron plates (2) cover whole inwalls of drum shape shell (14).Groove (4) is continuous on whole inner periphery, and crest (6) and trough (7) form lift portion, and lift portion goes up the ball heap with it together and rotates in direction of rotation (15).With dashed lines (18) is illustrated in the rotary course piles formed surface by ball.The ball heap is swelled to height (19).Ball falls from height (19), impacts ball row road, and the ball row are represented with label (20).

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Claims

1, be used for the liner (16) of orange grinding machine, it is characterized in that known separately feature is combined, it has groove (4), and groove (4) roughly is continuous in a circumferential direction; Muscle (9) is arranged between groove (4); Also have bossing (6) and/or negative area (7), they are transversely arranged with respect to circumferencial direction.

2,, it is characterized in that the bottom surface (5) of groove (4) and/or muscle (9) have bossing (6) and/or negative area (7) as claim 1 said liner.

3, as claim 2 said liners, the shuttle (8) that it is characterized in that the bottom surface (5) of groove (4) and/or muscle (9) is on the direction of groove (4), and is continuous with the shape of ripple.

4, as claim 1,2 or 3 said liners, it is characterized in that bossing on the bottom of groove (4) and/or negative area and ripple respectively as go up bossing at the shuttle (8) of muscle (9) and/or negative area continuous, and bossing and/or negative area be arranged on the identical bus of liner (16) with ripple.

5,, it is characterized in that groove (4) has identical cross-sectional profiles on the whole circumference of liner (16) as claim 1 to 5 any one said liner.

6, the liner of being made up of each plate and according to any one the said liner in the claim 1 to 5 is characterized in that in the place of recessed and protruding (6) plate (2) being separated respectively.