CN203044095U - Discharging bushing of ball mill - Google Patents
Discharging bushing of ball mill Download PDFInfo
- Publication number
- CN203044095U CN203044095U CN 201220658245 CN201220658245U CN203044095U CN 203044095 U CN203044095 U CN 203044095U CN 201220658245 CN201220658245 CN 201220658245 CN 201220658245 U CN201220658245 U CN 201220658245U CN 203044095 U CN203044095 U CN 203044095U
- Authority
- CN
- China
- Prior art keywords
- lining
- discharging
- bushing
- discharging lining
- ore
- 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 - Fee Related
Links
Images
Landscapes
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a discharging bushing of a ball mill. The discharging bushing of the ball mill is characterized in that the thickness of the bushing is increased by 30 to 50 mm; 1 to 4 negative spins are formed in the inner diameter direction of the bushing; the section shape of the spins is designed to be trapezoidal; a ball blocking grate is arranged at an outlet of the bushing; an ore discharge cylinder is arranged on the outer side of the ball blocking grate and is trumpet-shaped; holes are formed in the ore discharge cylinder uniformly; positive spins are arranged in the inner diameter direction of the ore discharge cylinder; and the section of the spins is rectangular. The discharging bushing of the ball mill is smart in design, simple in structure, easy to machine and high in interchangeability and effectively prevents ball spitting phenomenon during operation of the mill; and the material of the bushing is improved, the strength and the toughness of the bushing are enhanced, cracking of the bushing is prevented, the service life is prolonged by 4 to 5 times compared with that of the original bushing, and the load bearing capacity is increased by 3 times.
Description
Technical field
The utility model relates to a kind of ball mill discharging lining, belongs to mechanical field.
Background technology
Ball mill is the high mouthful of capital equipment that the iron ore powder is produced; and the discharging lining is the flow passage components that protection grinding machine hollow shaft is not worn; ball mill mainly comprises feeder, barrel, discharging portion; in order to reduce Iron Ore Powder to the wearing and tearing of ball mill body, at the ball mill discharging portion discharging lining is installed and is protected the grinding machine hollow shaft.
The defective that existing discharging lining exists: one of defective is cracking easily, the cracking back is the wearing and tearing quill shaft easily: lining material and heat treatment, what high mouth iron ore was selected for use in the past is normal steel casting (material: ZG35) discharging lining, after its casting is finished, need carry out the tough processing of water, to obtain purer austenite structure.If carbon content is higher in the discharging lining, the easy brittle failure of discharging lining or cracking, if carbon content is on the low side in the discharging lining, the discharging lining is not wear-resisting again, one of shortcoming of normal steel casting is exactly that б s/ б b value is very low, therefore wearing and tearing and brittle failure easily in use is the main cause that causes discharging lining initial failure; Two of defective is told ball easily and is reduced grinding efficiency, and as accompanying drawing, discharging lining endoporus does not design backpitch, behind the grinding machine rotation ore grinding, cause the iron and steel ball of part to flow out with ore pulp from discharging lining endoporus, can't return grinding machine recirculation ore grinding, the first causes the waste of milling medium iron and steel ball; Its two iron and steel segment loses, and the pack completeness deficiency will have a strong impact on grinding operation rate and the efficient of grinding machine; It three will flow into next procedure with flow of slurry tapping iron ball, and increasing grader extra duty causes the big axle fracture of grader.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model provides a kind of ball mill discharging lining, has improved the yield limit of discharging lining, prevents cracking, has stoped ball mill to tell ball.
The technical solution adopted in the utility model is: a kind of ball mill discharging lining is characterized in that: be provided with 1～4 backpitch at the lining internal diameter direction, the coil cross section shape is designed to trapezoidal; The lining outlet is provided with the comb of blocking; The block outside of combing is provided with out ore chimney, and it is tubaeform going out ore chimney, goes out evenly to be provided with the hole on the ore chimney, goes out the ore chimney internal diameter direction and is provided with right-handed screw, and coil cross section is shaped as rectangle.
In the such scheme, the material of described lining is the potassium steel that contains crome metal Cr, molybdenum Mo element.
In the such scheme, the chemical composition of described lining is designed to: C 0.9%～1.20%, and Mn 8%～10%, and Cr 1.50%～2.50%, Mo 0.2%～0.3%, Si0.8%, P≤0.07%, S≤0.04%, hardness should reach more than the HRC40, and impact flexibility α k should reach 120 J/cm
2More than.
The discharging lining is the ball mill flow passage components faster that wear and tear, and existing discharging lining was lacked 1500 hours～2000 hours than the end cap liner plate service life second round, change synchronously second round in order to realize discharging lining and end cap liner plate, should suitably increase the thickness 30～50mm of discharging lining, discharging lining thickness is increased to 110～130 millimeters by original 80 millimeters, the tough processing of proper extension water and Ageing Treatment time, make austenite structure optimization.Can effectively reduce grinding machine stopping production number of times like this.Concrete grammar is: discharging lining thickness is increased by 30～50mm, and the thickness of grinder shell cover liner plate is constant, can realize synchronous replacing, reduce grinding machine and shut down number of times, treating capacity when improving the grinding machine platform, the usage factor of raising grinding machine, the potential of performance grinding machine.
In order to realize evenly giving the ore deposit, prevent the lining cracking, design adds a certain amount of Cr, Mo element in the casting of discharging lining, improve discharging lining machinery and physical property, improves hardness, the toughness of discharging lining.Design in addition at discharging lining endoporus and increase by 1～3 backpitch cracking strip, backpitch increases lining intensity, returns iron and steel ball, lump ore and anticracking effect, utilizes the lining backpitch, effectively stops ball mill to tell ball, Tu Kuang, improve grinding efficiency, prevent the grader off-axis; The application space isolation technique, the design backpitch is of a size of trapezoidal: go up wide/following wide * height=(30～70)/(60～80) * (60～120), the backpitch that angle is 60 °～70 ° (opposite with the grinding machine rotation direction) angle, 1～3 of spiral head number, can guarantee iron and steel ball, lump ore with ore pulp rotation outflow, return grinding machine recirculation ore grinding again.Increase the comb of blocking in the lining outlet simultaneously, return ball, lump ore and the effect of blocking with raising, prevent that iron and steel ball and lump ore from spuing.And increase and ore chimney in the outside of combing of blocking, the fine grained ore pulp enters next process, leaves over the coarse granule ore and delivers to the barren rock bucket, separates and does not influence subsequent processing production.
The present invention changes the material of discharging lining into contain crome metal Cr, molybdenum Mo element potassium steel, the effect that carbide is separated out in the discharging lining of slowing down guarantees the toughness that it is good, can improve the yield limit of discharging lining simultaneously, improve its machinery and physical property, prevent the lining cracking; Design the backpitch cracking strip simultaneously, prevent discharging lining cracking, the design backpitch goes out mine mouth, the comb etc. of blocking, and prevents that iron and steel ball and lump ore from spuing.
This method is to adopt the high manganese steel material ZGMn9Cr2Mo that contains Cr, Mo metallic element, make the design of discharging lining ZGMn9Cr2Mo(chemical composition by lost foam casting: contain C 0.9%～1.20%, Mn 8%～10%, Cr 1.50%～2.50%, Mo 0.2%～0.3%, Si0.8%, P≤0.07%, S≤0.04%.Be subjected under good the impact, hardness can reach more than the HRC40, and wearability is preferably arranged, and have more than the good impact flexibility α k120 J/cm2, and original cast steel ZG35 impact flexibility is α k40J/cm2, the toughness deficiency); Discharging lining behind the casting is also needed to carry out following heat treatment (structure property design) before installing and using:
(1) according to discharging lining place to use and abrading section, the thickness of discharging lining is increased by 30～50 millimeters, and increase 1-3 bar right-hand screw (opposite with grinding machine ore grinding rotation direction) at discharging lining internal diameter direction, the coil cross section shape is designed to trapezoidal, be of a size of: go up wide/following wide * height=(30～70)/(60～80) * (60～120), the backpitch angle that angle is 60 °～70 °, 1～3 of spiral head number, can guarantee that ore pulp flows out with the grinding machine rotation, and iron and steel ball or lump ore lead with backpitch, return grinding machine recirculation ore grinding again.Inner ring is that the backpitch of trapezoid cross section also has the anticracking effect in addition, avoids taking place in process of production discharging lining cracking and tells ball accidents such as (telling lump ore).
(2) design the comb of blocking in the outlet of discharging lining, with the radial welding production of Φ 16～Φ 24 round steel radial directions, spacing is 20～30, appearance and size external diameter/internal diameter=(Φ 850～Φ 750)/(Φ 450～Φ 350), return ball and the effect of blocking with raising, prevent that again iron and steel ball or lump ore etc. from spuing.
(3) at the outside design ore removal strand cage of combing of blocking, with thickness 10mm steel plate, roll into the tubaeform ore chimney that goes out, big footpath * the path of appearance and size * length=(Φ 850～Φ 750) * (Φ 450～Φ 350) * (1200～1400), and go out on the ore chimney spacing and evenly arrange the square ore removal of 16 * 10 millimeters long hole for (10～20) tubaeform, go out ore chimney inside tubaeform, welding right-handed screw (identical with the ball mill rotation direction), and increase a right-handed screw at the discharge barrel internal diameter direction, the coil cross section shape is designed to rectangle, be of a size of: length * wide * thick=(220～180) * (60～100) * (8～12), the right-handed screw angle that angle is 60 °～70 °, 1～2 of spiral head number can guarantee that ore pulp goes out from the ore removal orifice flow with the grinding machine rotation, lead with right-handed screw and leave over lump ore etc., make grinding machine discharge waste residue and barren rock is discharged along right-handed screw, the fine grained ore pulp enters next process, makes to leave over the coarse granule ore and deliver to the barren rock bucket, isolate and do not influence down operation production, improve grinding efficiency.
(4) Design of Heat Treatment Process:
A, the discharging lining is gone into stove be heated to 900 ℃～950 ℃, be incubated 0.3～0.5 hour, be 100 ℃～120 ℃/hour by speed then and cool to 500 ℃～530 ℃; Slowly heat up (30 ℃～40 ℃/hour) and insulation intensification again in 1～2 hour, its purpose prevents that the discharging lining from cracking;
B, 500 ℃～530 ℃ slowly heat up (30 ℃～40 ℃/hour of standards) to 670～710 ℃, be incubated 1.5～2.0 hours, continue to be warmed up to 1080 ℃～1100 ℃ by 80 ℃～100 ℃/hour then; The purpose of insulation is dissolved in the austenite discharging lining carbide fully, to obtain higher strength and toughness;
C, 1080 ℃～1100 ℃ the insulation 2.0～4.0 hours, the discharging lining is taken out from stove, put into water and carry out the tough processing of water, 2.0～2.5 hours tough processing times of water.Its objective is the carbide of eliminating in the as-cast structure, obtain single austenite structure, because carbide reduces the intensity of discharging lining and makes discharging lining embrittlement in the discharging lining, make the discharging lining produce casting crack easily;
The water temperature control of d, the tough processing of water is at 25 ℃～35 ℃; The entry time control that the tough processing discharging of water lining takes out from stove was at 2.0～2.5 minutes;
E, temper are taken out the discharging lining from water, put into tempering furnace, are 30 ℃～40 ℃/hour by speed and are heated to 250 ℃～350 ℃, are incubated 5～7 hours, cool off with 1.0～2.0min/mm speed then; Intensity and hardness constantly descend in drawing process, and plasticity and toughness improve gradually.
(6) discharging lining ZGMn9Cr2Mo chemical composition design: C 0.9%～1.20%, and Mn 8%～10%, and Cr 1.50%～2.50%, and Mo 0.2%～0.3%, Si0.8%, P≤0.07%, S≤0.04%.Be subjected under good the impact, hardness can reach more than the HRC40, and wearability is preferably arranged, and good impact flexibility is arranged, more than the impact flexibility index α k120 J/cm2.
(7) add Cr on the discharging lining basis of potassium steel composition, the Mo element makes it formed chromatize discharging lining, under carbide dissolves completely condition, discharging lining, especially yield limit were more obvious before intensity and toughness all were better than, and were the major techniques that prevents discharging lining cracking.
(8) after the casting of discharging lining, must eliminate the internal stress of casting through the Ageing Treatment of certain hour, prolong the service life of discharging lining.Facts have proved that the arch that can effectively reduce the discharging lining by Ageing Treatment discharging lining becomes and cracking.In general, the normal Ageing Treatment time is 18～36 months.
(9) suitable temperature (250 ℃～350 ℃) and temperature retention time (being incubated 5～7 hours) can be eliminated casting stress and obtain the precipitation strength effect, prevents that casting crack from taking place.Contain Metal Cr, Mo element lining after casting, should be by the Ageing Treatment (18～36 months) of certain hour, eliminate casting stress through low temperature or normal temperature, insulation for a long time or heating, can progressively improve plasticity and the toughness of discharging lining, eliminate the internal stress of casting, prolong its service life, prevent discharging lining cracking.
The present invention is suitable for the discharging lining transformation to existing left-handed grinding machine, dextrorotation grinding machine discharging lining also is fit to, but the discharging lining hand of spiral is opposite.It is low that the present invention has overcome former discharging lining body intensity, and tell characteristics such as ball, easy to crack and yield deformation, thereby have higher wearability, higher breaking resistance, and do not tell ball etc.Can reach 16000 hours service life～20000 hours, or can use continuously 23～25 months, the grinding machine treating capacity can reach 2,000,000 tons～2,800,000 tons, is more than two times of common discharging lining service life.And can not tell ball, arch becomes or cracking etc.Reduce the downtime, improve the grinding machine operating rate.
The ball mill discharging lining that the utility model provides designs ingenious, simple in structure, easy processing, interchangeability is good, because ball mill lining internal diameter increases, and has designed backpitch, combs of blocking, goes out ore chimney, has prevented that effectively ball mill from telling ball and cracking in turning round; Improved the material of lining, improved the strength and toughness of lining, prevented lining cracking, improved 4 ~ 5 times with comparing originally service life, and load bearing capacity improves 3 times.
Below in conjunction with drawings and Examples the utility model is described further.
Description of drawings
Fig. 1 is cutaway view of the present utility model.
1 is the lining auxiliary section among the figure, and 2 is backpitch, and 3 is lining, and 4 is flange, and 5 are the comb of blocking, and 6 is flange, and 7 for going out ore chimney, and 8 is right-handed screw.
The specific embodiment
Embodiment:
As shown in Figure 1, a kind of ball mill discharging lining is characterized in that: the thickness of lining 3 increases 30mm, increases to present 110mm by original 80mm, is provided with three backpitch 2 at the lining internal diameter direction, and backpitch 2 cross sectional shapes are designed to trapezoidal; Lining 3 outlets are provided with to block combs 5; Flange 4 connects lining 3 and blocks and comb 5, and comb 5 outsides of blocking are provided with out ore chimney 7, goes out ore chimney 7 and connects lining 3 by flange 6, goes out ore chimney 7 for tubaeform, goes out evenly to be provided with the hole on the ore chimney 7, goes out ore chimney 7 internal diameter directions to be provided with right-handed screw 8, and right-handed screw 8 cross sectional shapes are rectangle.
Concrete preparation method is: this method is to adopt the high manganese steel material ZGMn9Cr2Mo that contains Cr, Mo metallic element, make the design of discharging lining ZGMn9Cr2Mo(chemical composition by lost foam casting: contain C 0.9%～1.20%, Mn 8%～10%, Cr 1.50%～2.50%, Mo 0.2%～0.3%, Si0.8%, P≤0.07%, S≤0.04%.Be subjected under good the impact, hardness can reach more than the HRC40, and wearability is preferably arranged, and have more than the good impact flexibility α k120 J/cm2, and cast steel ZG35 impact flexibility is lower than α k40J/cm2, the toughness deficiency); Discharging lining behind the casting is also needed to carry out following heat treatment (structure property design) before installing and using:
(1) according to discharging lining place to use and abrading section, the thickness of discharging lining is increased by 30～50 millimeters, and increase many right-hand screws (opposite with grinding machine ore grinding rotation direction) at discharging lining internal diameter direction, the coil cross section shape is designed to trapezoidal, be of a size of: go up wide/following wide * height=(30～70)/(60～80) * (60～120), the backpitch angle that angle is 60 °～70 °, 1～3 of spiral head number, can guarantee that ore pulp flows out with the grinding machine rotation, and iron and steel ball, lump ore etc. lead with backpitch, return grinding machine recirculation ore grinding again, reciprocal therewith.Interior ring cross-section is that trapezoidal backpitch also has the anticracking effect in addition, avoids taking place in process of production discharging lining cracking and tells accident such as ball.
(2) design the comb of blocking in the outlet of discharging lining, with the radial welding production of Φ 16～Φ 24 round steel radial directions, spacing is 20～30, appearance and size external diameter/internal diameter=(Φ 850～Φ 750)/(Φ 450～Φ 350), return ball and effect such as block with raising, prevent that again iron and steel ball etc. from spuing.
(3) at the outside design ore removal strand cage of combing of blocking, with thickness 10mm steel plate, roll into the tubaeform ore chimney that goes out, big footpath * the path of appearance and size * length=(Φ 850～Φ 750) * (Φ 450～Φ 350) * (1200～1400), and go out on the ore chimney spacing and evenly arrange the square ore removal of 16 * 10 millimeters long hole for (10～20) tubaeform, go out ore chimney inside tubaeform, welding right-handed screw (identical with the ball mill rotation direction), and increase a right-handed screw at the discharge barrel internal diameter direction, the coil cross section shape is designed to apart from shape, be of a size of: length * wide * thick=(220～180) * (60～100) * (8～12), the right-handed screw angle that angle is 60 °～70 °, 1～2 of spiral head number can guarantee that ore pulp goes out from the ore removal orifice flow with the grinding machine rotation, and lump ore etc. lead with right-handed screw, grinding machine discharge waste residue and barren rock are discharged along right-handed screw, and the fine grained ore pulp enters next process, makes the coarse granule ore deliver to the barren rock bucket, isolate and do not influence down operation production, improve grinding efficiency.
(4) Design of Heat Treatment Process:
A, the discharging lining is gone into stove be heated to 900 ℃～950 ℃, be incubated 0.3～0.5 hour, be 100 ℃～120 ℃/hour by speed then and cool to 500 ℃～530 ℃; Slowly heat up (30 ℃～40 ℃/hour) and insulation intensification again in 1～2 hour, its purpose prevents that the discharging lining from cracking;
B, 500 ℃～530 ℃ slowly heat up (30 ℃～40 ℃/hour of standards) to 670～710 ℃, be incubated 1.5～2.0 hours, continue to be warmed up to 1080 ℃～1100 ℃ by 80 ℃～100 ℃/hour then; The purpose of insulation is dissolved in the austenite discharging lining carbide fully, to obtain higher strength and toughness;
C, 1080 ℃～1100 ℃ the insulation 2.0～4.0 hours, the discharging lining is taken out from stove, put into water and carry out the tough processing of water, 2.0～2.5 hours tough processing times of water.Its objective is the carbide of eliminating in the as-cast structure, obtain single austenite structure, because carbide reduces the intensity of discharging lining and makes discharging lining embrittlement in the discharging lining, make the discharging lining produce casting crack easily;
The water temperature control of d, the tough processing of water is at 25 ℃～35 ℃; The entry time control that the tough processing discharging of water lining takes out from stove was at 2.0～2.5 minutes;
E, temper are taken out the discharging lining from water, put into tempering furnace, are 30 ℃～40 ℃/hour by speed and are heated to 250 ℃～350 ℃, are incubated 5～7 hours, cool off with 1.0～2.0min/mm speed then; Intensity and hardness constantly descend in drawing process, and plasticity and toughness improve gradually.
(6) discharging lining ZGMn9Cr2Mo chemical composition design: C 0.9%～1.20%, and Mn 8%～10%, and Cr 1.50%～2.50%, and Mo 0.2%～0.3%, Si0.8%, P≤0.07%, S≤0.04%.Be subjected under good the impact, hardness can reach more than the HRC40, and wearability is preferably arranged, and good impact flexibility is arranged, more than the impact flexibility index α k120 J/cm2.
(7) add Cr on the discharging lining basis of potassium steel composition, the Mo element makes it formed chromatize discharging lining, under carbide dissolves completely condition, discharging lining, especially yield limit were more obvious before intensity and toughness all were better than, and were the major techniques that prevents discharging lining cracking.
(8) after the casting of discharging lining, must eliminate the internal stress of casting through the Ageing Treatment of certain hour, prolong the service life of discharging lining.Facts have proved that the arch that can effectively reduce the discharging lining by Ageing Treatment discharging lining becomes and cracking.In general, the normal Ageing Treatment time is 18～36 months.
(9) suitable temperature (250 ℃～350 ℃) and temperature retention time (being incubated 5～7 hours) can be eliminated casting stress and obtain the precipitation strength effect, prevents that casting crack from taking place.Contain Metal Cr, Mo element lining after casting, should be by the Ageing Treatment (18～36 months) of certain hour, eliminate casting stress through low temperature or normal temperature, insulation for a long time or heating, can progressively improve plasticity and the toughness of discharging lining, eliminate the internal stress of casting, prolong its service life, prevent discharging lining cracking.
Just can be further with being warming up to 1080～1100 ℃ of hardening heats behind the lining preheating samming, its purpose is to eliminate the carbide in the as-cast structure, obtain single austenite structure, because carbide can reduce the intensity of discharging lining and make discharging lining embrittlement in the discharging lining, cause the discharging lining to ftracture easily.Quench by reasonable time insulation back.So not only can relax discharging lining poor thermal conductivity and the big influence of thermal coefficient of expansion when heating, and alleviate the phenomenon of top layer decarburization, demanganize and oxidation, improve wearability, prevent discharging lining cracking.When low temperature heated up, the fragility of newly separating out can most of dissolving or all dissolvings 680 ℃～710 ℃ sammings 1.5～2 hours.Therefore suitable temperature retention time can reach the effect of thickness samming in the table.Prolong temperature retention time and can reduce discharging lining fragility and tearing tendency, improve discharging lining plasticity and yield limit.
The displacement of grinding machine discharging lining in service with Φ 16 round steel plug jails, solid welding, can be prevented in slit between discharging lining and the hollow shaft, and hollow shaft enters the ore deposit, and the accidents such as bolt or damage discharging lining of cutting off take place.
Annual more than 870 ten thousand tons in raw ore, 2,220,000 tons of the production Iron Ore Powder handled of high mouthful of iron ore of Taiyuan Iron ﹠ Steel Group Co., Ltd..Existing 14 grinding machines are respectively 7 Φ 3.2 * 4.5,2 Φ 3.2 * 3.5,1 Φ 5.0 * 6.4,2 Φ 4.3 * 6.1,1 ∮ 3.6 * 4.0 and 1 ∮ 3.6 * 4.5.The discharging lining should have suitable quantity in stock, can solve catastrophic discontinuityfailures such as discharging lining; Use a cover, second cover is stocked in insurance at once, guarantees the discharging lining secondary ageing processing time.Adopt high mouthful of iron ore 2# of the Taiyuan Iron and Steel Co. grinding machine discharging lining of ZGMn9Cr2Mo casting, on probation through suitable quenching and timeliness processing back, follow the tracks of statistics through the scene, its wearability has improved 36.8%.Chromatize discharging lining will reach desired mechanical performance, and the carbide solid solution in its tissue is in austenite.Exceed standard as residual carbide, its performance will sharply worsen, and product also can't use.Therefore the requirement of the Technology for Heating Processing of chromatize discharging lining is stricter, operates meticulousr.Will pay special attention to control programming rate in heat treatment process, prevent the generation of crackle, especially the programming rate of low temperature should be controlled at 30 ℃～40 ℃/hour, should be incubated in 680～710 ℃ of scopes simultaneously.
When the discharging lining is installed, can not cut the discharging lining with oxygen lance; Because oxygen lance heating cutting discharging lining equals tempering again after the tough processing of discharging lining water, in cooling procedure subsequently, carbide is separated out along crystal boundary, makes the chap of crystal boundary grain size number, therefore causes the discharging lining to present bigger fragility.Because the capacity of heat transmission of potassium steel has only 1/3 of ordinary steel, and the coefficient of expansion is bigger by 50% than ordinary steel, when cutting discharging lining outside, because firing rate is too fast, make discharging lining heat affected zone produce micro-crack easily, buried the hidden danger of discharging lining cracking.
Claims (2)
1. ball mill discharging lining, it is characterized in that: be provided with 1～4 backpitch at the lining internal diameter direction, the coil cross section shape is designed to trapezoidal; The lining outlet is provided with the comb of blocking; The block outside of combing is provided with out ore chimney, and it is tubaeform going out ore chimney, goes out evenly to be provided with the hole on the ore chimney, goes out the ore chimney internal diameter direction and is provided with right-handed screw, and coil cross section is shaped as rectangle.
2. ball mill discharging lining according to claim 1, it is characterized in that: the hardness of described lining should reach more than the HRC40, and impact flexibility α k should reach 120 J/cm
2More than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658245 CN203044095U (en) | 2012-12-04 | 2012-12-04 | Discharging bushing of ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658245 CN203044095U (en) | 2012-12-04 | 2012-12-04 | Discharging bushing of ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203044095U true CN203044095U (en) | 2013-07-10 |
Family
ID=48727095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220658245 Expired - Fee Related CN203044095U (en) | 2012-12-04 | 2012-12-04 | Discharging bushing of ball mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203044095U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998729A (en) * | 2015-05-30 | 2015-10-28 | 佛山市卓达豪机械有限公司 | Non-contact slurry passing device used in continuous ball mill |
| CN110538700A (en) * | 2019-07-05 | 2019-12-06 | 洛阳矿山机械工程设计研究院有限责任公司 | Discharging device capable of improving ore grinding medium filling rate of overflow type ball mill |
| CN111617873A (en) * | 2020-06-08 | 2020-09-04 | 湘乡市旺达输送设备制造有限公司 | Discharge port of stone crusher |
-
2012
- 2012-12-04 CN CN 201220658245 patent/CN203044095U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998729A (en) * | 2015-05-30 | 2015-10-28 | 佛山市卓达豪机械有限公司 | Non-contact slurry passing device used in continuous ball mill |
| CN110538700A (en) * | 2019-07-05 | 2019-12-06 | 洛阳矿山机械工程设计研究院有限责任公司 | Discharging device capable of improving ore grinding medium filling rate of overflow type ball mill |
| CN111617873A (en) * | 2020-06-08 | 2020-09-04 | 湘乡市旺达输送设备制造有限公司 | Discharge port of stone crusher |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102517502B (en) | Disk-shaped roller cutter ring and manufacture method thereof | |
| CN1186472C (en) | High-speed steel roll ring and its production | |
| CN102443741B (en) | Manufacturing method for steel ball for ball mill | |
| CN101748333B (en) | Low-carbon-equivalent high-strength wear-resistant steel plate and production method thereof | |
| CN101748346B (en) | High-grade wear-resistant steel plate and production method thereof | |
| CN101455986B (en) | Crusher duplex metal abrasion-proof backing block and manufacture method thereof | |
| CN107866306B (en) | A kind of stud formula Roller of High and its production method | |
| CN108950385A (en) | Forge the big specification abrading-ball steel of low-cost and high-performance and its production method | |
| CN102310014B (en) | High performance composite metal hammer | |
| CN102251187A (en) | High-speed steel, extrusion roller containing high-speed steel and production method of extrusion roller | |
| CN102115850A (en) | Multi-component low-alloyed large-scale wear-resistant cast steel hammerhead and preparation process thereof | |
| CN103451398A (en) | Manufacture method of 50CrVA alloy structural steel type hot rolled round steel bar | |
| CN203044095U (en) | Discharging bushing of ball mill | |
| CN102634733A (en) | Composite roll having uniform roll surface hardness and made of high-speed steel containing boron and method for manufacturing composite roll | |
| CN102383044B (en) | Multicomponent high speed steel used for preparing roller | |
| CN104451045A (en) | Isothermal salt bath quenching heat treatment process of wear-resistant material | |
| CN107604248A (en) | A kind of high intensity Q500GJD quenched and tempered states steel plate for building structure and its manufacture method | |
| CN112322970A (en) | High-chromium steel composite roll collar and manufacturing method thereof | |
| CN102418044B (en) | Steel for steel balls and method for manufacturing steel balls | |
| CN110106438A (en) | The high soft core of volume hardness rolls abrading-ball steel, production method and grinding ball production method | |
| CN103498103A (en) | High-hardenability big-diameter 65MnCr grinding ball and preparation method thereof | |
| CN103757545A (en) | High-temperature wearing-resistance alloy material for rolling mill guide and guard unit and rolling mill guide and guard unit thermal treatment method | |
| CN102877003A (en) | Superfine grinding cast grinding ball and heat treatment process thereof | |
| CN101623746B (en) | Method for preventing lining plate of ball grinder from cracking | |
| CN114959479B (en) | Steel for rare earth wear-resistant alloy steel bar and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20171204 |