CN110787895A - Crushing system and crushing process method for mine siliceous raw material - Google Patents
Crushing system and crushing process method for mine siliceous raw material Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000002994 raw material Substances 0.000 title claims abstract description 46
- 230000008569 process Effects 0.000 title claims abstract description 36
- 238000012216 screening Methods 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims description 162
- 239000002245 particle Substances 0.000 claims description 68
- 239000011236 particulate material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 15
- 238000012423 maintenance Methods 0.000 abstract description 14
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- 238000013461 design Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
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- 238000007599 discharging Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 230000000052 comparative effect Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
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- 239000008187 granular material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
Abstract
The invention relates to the technical field of sandstone crushing, and particularly discloses a crushing system and a crushing process method for a mine siliceous raw material. The crushing system of the mine siliceous raw material provided by the combination of the jaw crusher, the cone crusher and the screening device overcomes the defects in the prior art, has the advantages of stable equipment operation, low maintenance rate and discharge of 40mm or less, and can meet the feeding requirement of 40mm or less for raw material grinding processing by using a roller press in the subsequent process. Moreover, the crushing system and the crushing process method of the mine siliceous raw material also have the advantages of low power consumption and high economic benefit.
Description
Technical Field
The invention relates to the technical field of sandstone crushing, in particular to a crushing system and a crushing process method of a mine siliceous raw material.
Background
The sandstone ore is a sedimentary type mine and mainly provides siliceous raw materials for enterprises such as cement plants and the like, most sandstone mines have joint development and high hardness in the sedimentary forming process, and the large block rate after blasting is high, the traditional sandstone is provided with a reaction crusher, more overproof large blocks (generally about 800 mm) in the blanking enter a lower storage bin of the crusher through a fluctuation roller feeder, the situations of large block material overhead, frequent damage to internal spare parts of the crusher and the like often occur, and the normal production operation of equipment is influenced; moreover, as the roller press is popularized and used in factories for grinding raw materials, the granularity of the fed sandstone needs to be controlled to be 40mm or below, and the granularity of the sandstone obtained by the original traditional sandstone crushing process and the crushing of the original impact crusher is about 70mm, so that the feeding requirement of the roller press for grinding raw materials cannot be met by the manufacturers.
Disclosure of Invention
The invention addresses the shortcomings of crushing with impact crushers of the conventional design: on one hand, the situation that large blocks exceed the standard and cannot be broken in an overhead mode and spare parts inside the crusher are frequently damaged is often caused, on the other hand, the discharging in the process of crushing the impact crusher in the conventional design is about 70mm, the feeding requirement that the feeding is 40mm or less when a roller press is used for grinding raw materials in the subsequent process cannot be met, and in addition, the consumed power of each ton of sandstone is large when the impact crusher is used for crushing conventionally, and the defect of low economic benefit is also caused. Therefore, the invention aims to provide a crushing system and a crushing process method for a mine siliceous raw material, which can overcome the defects, have the advantages of stable equipment operation, low maintenance rate and discharge of 40mm or less, and can meet the feeding requirement that the feeding is 40mm or less when a roller press is used for grinding the raw material in the subsequent process. In a word, the existing system is put into production at present, the field operation condition is good, and the system can solve the problems of large block rate, high hardness and high abrasiveness of the siliceous raw material of the sandstone mine. Through the design of the crushing process flow, the applicability and the economical efficiency of the crusher can be improved in a wider range, and the later maintenance cost of the crusher is reduced.
In order to achieve the aim, the invention provides a crushing system of a mine siliceous raw material, which comprises a bar feeder, a plurality of material conveying devices, a jaw crusher, a screening device and a cone crusher; the bar feeder can divide the material into an upper large particle material and a lower small particle material, the upper large particle material is poured into the jaw crusher to be crushed for the first time, a lower feed opening of the bar feeder is connected with the material conveying device, and the lower small particle material can be conveyed to the screening device through the material conveying device; a material conveying device is arranged below a discharge port of the jaw crusher and can convey materials subjected to primary crushing to a screening device, and the screening device screens the materials into large primary crushed particle materials and target particle materials; the upper part of the screening device is connected with a material conveying device, and large-particle materials crushed at one time can be conveyed to a cone crusher through the material conveying device to be crushed at the second time; a discharge port of the cone crusher is connected with a material conveying device, and secondary crushed materials obtained through secondary crushing can be conveyed to a screening device through the material conveying device; the lower feed opening of the rod feeder and the lower portion of the screening device are respectively connected with the material conveying device, and the target particle materials can be conveyed to the material warehouse through the material conveying device.
Preferably, the material conveying device is a belt conveyor.
Preferably, the large-particle materials crushed at one time can be conveyed to the cone crusher from the upper part of the cone crusher through the material conveying device.
Preferably, still be provided with the feed bin that can deposit broken large granule material once between the cone crusher material conveyor.
Preferably, the fluctuating roller feeder is arranged below the bin.
Preferably, a traveling crane and a movable belt scale are further arranged above the cone crusher.
Preferably, a raw material hopper capable of blanking from below is further arranged above the bar feeder, wherein the raw material hopper is a raw material bin constructed by concrete.
The invention also provides a crushing process method of the mine siliceous raw material, which comprises the following steps: (1) dividing the mine siliceous raw material into an upper large-particle material and a lower small-particle material through a bar feeder, and pouring the upper large-particle material into a jaw crusher for primary crushing; conveying the lower small-particle materials to a screening device through a material conveying device; (2) screening the primarily crushed materials into primarily crushed large-particle materials and target particle materials through a screening device, and conveying the primarily crushed large-particle materials to a cone crusher through a material conveying device for secondary crushing; (3) conveying the secondarily crushed materials obtained through secondary crushing to a screening device through a material conveying device; (4) and conveying the target particle materials to a material warehouse through a material conveying device.
Preferably, the discharged grain size after the primary crushing is not more than 150mm, and the discharged grain size after the secondary crushing is not more than 40 mm.
Preferably, the particle size of the small particulate material below after passing through the rod feeder is no greater than 150 mm.
The main innovation points of the technical scheme of the invention are as follows:
(1) adopt the design of no precedent of "jaw breaker + cone crusher + screening plant", through screening before a crushing, through screening in crushing process, all through screening after once crushing, secondary crushing and at every turn crushing, the material after the screening circulates respectively, has improved broken efficiency to energy loss has been reduced.
(2) The jaw crusher is of a bending extrusion type, the working principle of the jaw crusher is that a motor drives a belt and a belt pulley, an eccentric shaft drives a movable jaw to move up and down, and when the movable jaw ascends, an included angle between a toggle plate and the movable jaw is increased, so that the movable jaw is pushed to approach a fixed jaw, and meanwhile, materials are crushed or split, and the purpose of crushing is achieved; when the movable jaw moves downwards, the included angle between the toggle plate and the movable jaw is reduced, the movable jaw leaves the fixed jaw under the action of the pull rod and the spring, and at the moment, the crushed materials are discharged from the lower opening of the crushing cavity. The crusher has the characteristics of large crushing ratio, uniform product granularity, simple structure, reliable work, simple and convenient maintenance, low operation cost and the like. The probability of being damaged by the overproof large sandstone can be reduced, and the running stability of the equipment is improved.
The cone crusher during operation, the horizontal axis of breaker is driven through V-belt and belt pulley by the motor, and the horizontal axis is rotatory through big, pinion drive eccentric bushing, and the breaker conical shaft produces the eccentricity under the effect of eccentric bushing and does the pendulum motion soon for broken wall surface is close to the fixed cone surface often and keeps away from the fixed cone surface often, thereby makes the building stones constantly receive the extrusion and broken in broken intracavity. The crushed material is discharged from a discharge port at the lower part of the crusher under the action of self weight. Has the characteristics of less consumption of easily damaged parts, low operation cost, excellent grain shape of finished products and the like.
Jaw breaker, cone crusher are extrusion formula breaker, for impact crusher, more can adapt to the material bold many (more than 800 mm) and the higher sandstone breakage of hardness (the straight ahead hardness is about 8-9), can avoid conventional design (counterattack formula breaker) spare parts such as rotor and the plate hammer frequently to change, influence production operation.
(3) The crushing granularity is controlled to be 40mm or below, and the crushed materials can directly enter a raw material grinding system in a factory, so that the power consumption is saved.
(4) The power consumption of each ton of sandstone in the technical scheme can only be about 2.05kw/h, and can be reduced by 25% compared with the power consumption of each ton of sandstone in the conventional design (impact crusher), and the operation can be obviously reduced after the technology is put into production, so that the technology has good economic benefit.
In conclusion, the crushing system for the mine siliceous raw material overcomes the defects in the prior art, has the advantages of stable equipment operation, low maintenance rate and material discharge of 40mm or less, and can meet the feeding requirement of 40mm or less for grinding the raw material by using a roller press in the subsequent process. Moreover, the crushing system and the crushing process method of the mine siliceous raw material also have the advantages of low power consumption and high economic benefit. In a word, the existing system is put into production at present, the field operation condition is good, and the system can solve the problems that the siliceous raw material of the sandstone mine has high block rate, high hardness and high abrasiveness and influences conventional crushing equipment. Through the design of the crushing process flow, the applicability and the economical efficiency of the crusher can be improved in a wider range, and the later maintenance cost of the crusher is reduced.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the crushing process of the present invention;
FIG. 2 is a process flow diagram of the present invention;
FIG. 3 is a diagram of a jaw crusher process arrangement of the present invention;
fig. 4 is a process layout of a cone crusher in the present invention.
Description of the reference numerals
1 Bar feeder 2 material conveying device
3 jaw breaker 4 screening plant
5 cone crusher 6 feed bin
7 fluctuation roller type feeder 8 movable belt scale
9 raw material hopper 10 dust collector
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the terms "upper, lower, bottom, top, side, and the like are included in the terms in an orientation representing only an orientation of the term in a conventional use state or a colloquial meaning understood by those skilled in the art, and should not be construed as limiting the term.
As shown in fig. 1-4, the invention provides a crushing system for mine siliceous raw materials, which comprises a bar feeder 1, a plurality of material conveying devices 2, a jaw crusher 3, a screening device 4 and a cone crusher 5; the bar feeder 1 can divide the material into an upper large particle material and a lower small particle material, the upper large particle material is poured into the jaw crusher 3 to be crushed for the first time, a lower feed opening of the bar feeder 1 is connected with the material conveying device 2, and the lower small particle material can be conveyed to the screening device 4 through the material conveying device 2; a material conveying device 2 is arranged below a discharge port of the jaw crusher 3, the material conveying device 2 can convey materials subjected to primary crushing to a screening device 4, and the screening device 4 screens the materials into primary crushed large-particle materials and target particle materials; the upper part of the screening device 4 is connected with the material conveying device 2, and large-particle materials crushed at one time can be conveyed to the cone crusher 5 through the material conveying device 2 to be crushed at the second time; a discharge port of the cone crusher 5 is connected with the material conveying device 2, and secondary crushed materials obtained through secondary crushing can be conveyed to the screening device 4 through the material conveying device 2; the lower part of the screening device 4 is connected with the material conveying device 2, and the target particle materials can be conveyed to the material warehouse through the material conveying device 2.
The main innovation points of the technical scheme of the invention are as follows:
(1) adopt the design of no precedent of "jaw crusher 3+ cone crusher 5+ screening plant 4", through screening before a crushing, through screening in the crushing process after once crushing, secondary crushing and at every turn crushing, all circulate respectively the material after the screening, improved broken efficiency to energy loss has been reduced.
(2) The jaw crusher 3 is of a bending extrusion type, the working principle of the jaw crusher is that a motor drives a belt and a belt pulley, an eccentric shaft drives a movable jaw to move up and down, and when the movable jaw ascends, an included angle between a toggle plate and the movable jaw is increased, so that the movable jaw is pushed to approach a fixed jaw, and meanwhile, materials are crushed or split, and the purpose of crushing is achieved; when the movable jaw moves downwards, the included angle between the toggle plate and the movable jaw is reduced, the movable jaw leaves the fixed jaw under the action of the pull rod and the spring, and at the moment, the crushed materials are discharged from the lower opening of the crushing cavity. The crusher has the characteristics of large crushing ratio, uniform product granularity, simple structure, reliable work, simple and convenient maintenance, low operation cost and the like. The probability of being damaged by the overproof large sandstone can be reduced, and the running stability of the equipment is improved.
The 5 during operations of cone crusher, the horizontal axis of breaker is driven through V-belt and belt pulley by the motor, and the horizontal axis is rotatory through big, pinion drive eccentric bushing, and breaker conical shaft produces the eccentricity under eccentric bushing's effect and is done the pendulum motion soon for broken wall surface is close to the fixed cone surface often and keeps away from the fixed cone surface often, thereby makes the building stones constantly receive the extrusion and broken in broken intracavity. The crushed material is discharged from a discharge port at the lower part of the crusher under the action of self weight. Has the characteristics of less consumption of easily damaged parts, low operation cost, excellent grain shape of finished products and the like.
Jaw breaker 3, cone crusher 5 are extrusion formula breaker, for impact crusher, more can adapt to the material bold many (more than 800 mm) and the higher sandstone breakage of hardness (the straight hardness is about 8-9), can avoid conventional design (counterattack formula breaker) spare parts such as rotor and the plate hammer frequently to change, influence production operation.
(3) The crushing granularity is controlled to be 40mm or below, and the crushed materials can directly enter a raw material grinding system in a factory, so that the power consumption is saved.
(4) The power consumption of each ton of sandstone in the technical scheme can only be about 2.05kw/h, and can be reduced by 25% compared with the power consumption of each ton of sandstone in the conventional design (impact crusher), and the operation can be obviously reduced after the technology is put into production, so that the technology has good economic benefit.
In conclusion, the crushing system for the mine siliceous raw material overcomes the defects in the prior art, has the advantages of stable equipment operation, low maintenance rate and material discharge of 40mm or less, and can meet the feeding requirement of 40mm or less for grinding the raw material by using a roller press in the subsequent process. Moreover, the crushing system and the crushing process method of the mine siliceous raw material also have the advantages of low power consumption and high economic benefit. In a word, the existing system is put into production at present, the field operation condition is good, and the system can solve the problems that the siliceous raw material of the sandstone mine has high block rate, high hardness and high abrasiveness and influences conventional crushing equipment. Through the design of the crushing process flow, the applicability and the economical efficiency of the crusher can be improved in a wider range, and the later maintenance cost of the crusher is reduced.
In a preferred embodiment of the invention, the screening device 4 is a vibrating screen, preferably mounted at an inclination of 15 ° to 30 ° so that the upper material is poured onto the conveyor 2 from the upper surface of the screening device and the lower material is fed onto the other conveyor 2 from a discharge opening below the screening device.
In the above technical solution, the material conveying device 2 may adopt a conventional conveying device in the art, and the present invention can be implemented as long as the material can be conveyed to a destination. In order to facilitate real-time material transport in complex terrains, in a preferred embodiment of the invention the material transport device 2 is a belt conveyor. And a plurality of belts are mutually matched to finish the conveying of the materials.
In a preferred embodiment of the invention, the primary crushing of large-particle material can be carried out from above the cone crusher 5 to the cone crusher 5 via the material conveying device 2.
In a preferred embodiment of the invention, a silo 6 capable of storing large-particle materials crushed at one time is further arranged between the material conveying devices 2 of the cone crusher 5.
In a preferred embodiment of the invention, a wave roller feeder 7 is arranged below the silo 6.
For the convenience of maintenance, in a preferred embodiment of the invention, a travelling crane and a mobile belt scale 8 are also arranged above the cone crusher 5. When the cone crusher 5 is overhauled, the movable belt scale 8 can retract, and the upper overhauling travelling crane can vertically lift out the parts such as the crusher shell, the movable cone and the like.
In a preferred embodiment of the invention, a raw material hopper 9 capable of discharging materials from below is further arranged above the rod feeder 1, wherein the raw material hopper 9 is a concrete raw material bin.
As shown in fig. 1 and fig. 2, the invention also provides a crushing process method of the mine siliceous raw material, which comprises the following steps: (1) dividing the mine siliceous raw material into an upper large particle material and a lower small particle material through a bar feeder 1, and pouring the upper large particle material into a jaw crusher 3 for primary crushing; conveying the lower small-particle materials to a screening device 4 through a material conveying device 2; (2) screening the primarily crushed material into a primarily crushed large-particle material and a target particle material through a screening device 4, and conveying the primarily crushed large-particle material to a cone crusher 5 through a material conveying device 2 for secondary crushing; (3) conveying the secondarily crushed materials obtained through secondary crushing to a screening device 4 through a material conveying device 2; (4) the target particle material is conveyed to the material warehouse through the material conveying device 2.
The technology starts from the aspects of adaptability, economy and overhaul and maintenance of crushing and model selection, adopts a process design flow of 'two-stage crushing and screening', the first-stage crushing system is a jaw crusher, the second-stage crushing is a cone crusher, and other auxiliary facilities such as a bar feeder, a vibrating screen classifier, a material conveying device and the like are configured. The process flow design can effectively solve the problems of high abrasiveness and difficult crushing of large particle size of the sandstone, the operation cost and the maintenance cost are reduced, and the process flow can effectively control the discharge particle size of the sandstone and is more suitable for the condition that the mill of the raw materials in a factory has particle size requirements.
Dividing the mine siliceous raw material into an upper large particle material and a lower small particle material (not more than 150mm) by a bar feeder 1, and pouring the upper large particle material to a jaw crusher 3; the large-particle material of the feeding sample can be about 800mm, and can adapt to the current situations of high abrasiveness of sandstone and difficult crushing of large particle size.
In a preferred embodiment of the invention, the particle size of the discharge after the primary crushing is not more than 150mm and the particle size of the discharge after the secondary crushing is not more than 40 mm.
In a preferred embodiment of the invention, the particle size of the small particulate material passing underneath the rod feeder 1 is not more than 150 mm.
In order to reduce dust diffusion and facilitate material recovery, in a preferred embodiment of the invention, a dust collector 10 is further arranged above the conveying device 2, and a dust collecting opening and a material discharging opening of the dust collector 10 face the material above the conveying device 2.
As for the model selection of the equipment, the model selection can be reasonably carried out according to the requirements of the cement production line, and in a specific embodiment of the invention: the processing capacity of the bar feeder 1 is 700t/h, the rotating speed is 980rpm, and the rotating speed of the eccentric shaft is 500-800 r/min; the material conveying device 2 is a belt conveyor, wherein the belt width of the belt conveyor is 1200mm, and the belt speed is 1.25 m/s; jaw crusher 3 power 160KW, rotational speed 985rpm, allowed feed particle size: about 800mm, discharge particle size: less than or equal to 150mm, production capacity: 500 t/h; the screening device is characterized in that the mounting inclination angle of the screening machine is 20 degrees, the vibration frequency is 740r/min, the double amplitude is 12mm, the vibration frequency is 740r/min, the number of the screening layers is 2, and the processing capacity is 1200 t/h; the cone crusher 5: 315KW power, rotating speed of the moving cone of 310rpm, maximum feeding granularity of less than or equal to 150mm, discharging granularity of less than or equal to 40mm, and production capacity: 500 t/h. According to the technical scheme, the power consumption of each ton of sandstone is 2.05kw/h, the power consumption of each ton of sandstone is reduced by about 25% compared with that of the sandstone in conventional design (impact crusher), the operation can be obviously reduced after the technology is put into production, and the economic benefit is good. At present, the existing engineering is put into production, the field operation condition is good, and the system can solve the problems of large block rate, high hardness and high abrasiveness of the siliceous raw material of the sandstone mine. Through the design of the crushing process flow, the applicability and the economical efficiency of the crusher can be improved in a wider range, and the later maintenance cost of the crusher is reduced. Wherein, the process arrangement according to a specific embodiment of the invention and the power statistics for a conventional impact crusher process arrangement in comparative example are shown in table 1.
TABLE 1
As can be seen from table 1: 1) in the scheme of the embodiment 1 of the invention, the total power of equipment in the jaw + cone arrangement scheme is 1025kw, the desktop capacity of the system can reach 500t/h, and the power consumption of each ton of sandstone is 2.05 kw/h; 2) the total power of the equipment of the counterattack crusher arrangement scheme in the comparative example is 532kw, the desktop capacity of the system can reach 200t/h, and the consumed power per ton of sandstone is 2.66 kw/h.
Further, for convenient 5 later stages of cone crusher overhauls, the cone crusher top sets up the feed bin 6 of overhauing driving and reserves 200t, through bandwidth 1600mm, throughput: feeding by a movable belt scale 8 of 100-600 t/h. When the crusher is overhauled, the movable belt scale 8 can retract, and the upper overhauling travelling crane can vertically lift out the crusher shell, the movable cone and other equipment.
All components of the jaw crusher 3 and cone crusher 5 of the present invention may be provided with wear protection: the movable cone spherical surface type feeding device comprises a replaceable movable cone spherical surface body, a main frame seat liner, a main frame pin sheath, a transmission shaft sleeve protection plate, a balance weight protection plate, a main frame lining plate and a dead angle feeding hopper, and further improves the running stability of equipment and reduces the maintenance cost.
In the above technical solution, the above apparatus of the present invention is disposed in a pit to meet the need of cement production.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A crushing system for mine siliceous raw materials is characterized by comprising a bar feeder, a plurality of material conveying devices, a jaw crusher, a screening device and a cone crusher;
the bar feeder can divide the material into an upper large particle material and a lower small particle material, the upper large particle material is poured into the jaw crusher to be crushed for the first time, a lower feed opening of the bar feeder is connected with the material conveying device, and the lower small particle material can be conveyed to the screening device through the material conveying device;
a material conveying device is arranged below a discharge port of the jaw crusher and can convey materials subjected to primary crushing to a screening device, and the screening device screens the materials into large primary crushed particle materials and target particle materials;
the upper part of the screening device is connected with a material conveying device, and large-particle materials crushed at one time can be conveyed to a cone crusher through the material conveying device to be crushed at the second time;
a discharge port of the cone crusher is connected with a material conveying device, and secondary crushed materials obtained through secondary crushing can be conveyed to a screening device through the material conveying device;
the lower feed opening of the rod feeder and the lower portion of the screening device are respectively connected with the material conveying device, and the target particle materials can be conveyed to the material warehouse through the material conveying device.
2. The crushing system of claim 1 wherein the material conveying means is a belt conveyor.
3. The crushing system according to claim 1, wherein the primary crushed large particle material can be transported to the cone crusher from above the cone crusher via the material transporting device.
4. The crushing system of claim 3, wherein a bin capable of storing large particle materials crushed at a time is further arranged between the material conveying devices of the cone crusher.
5. A crushing system according to claim 4, characterized in that below the silo there is arranged an oscillating roller feeder.
6. A crushing system according to claim 5, wherein a travelling crane and a mobile belt scale are also provided above the cone crusher.
7. A crushing system according to claim 5, characterized in that a raw material hopper capable of blanking from below is also arranged above the bar feeder, wherein the raw material hopper is a raw material bin of concrete construction.
8. A crushing process method of a mine siliceous raw material is characterized by comprising the following steps:
(1) dividing the mine siliceous raw material into an upper large-particle material and a lower small-particle material through a bar feeder, and pouring the upper large-particle material into a jaw crusher for primary crushing; conveying the lower small-particle materials to a screening device through a material conveying device;
(2) screening the primarily crushed materials into primarily crushed large-particle materials and target particle materials through a screening device, and conveying the primarily crushed large-particle materials to a cone crusher through a material conveying device for secondary crushing;
(3) conveying the secondarily crushed materials obtained through secondary crushing to a screening device through a material conveying device;
(4) and conveying the target particle materials to a material warehouse through a material conveying device.
9. A crushing process as claimed in claim 8, wherein the grain size of the discharge after the primary crushing is not more than 150mm, and the grain size of the discharge after the secondary crushing is not more than 40 mm.
10. A crushing process according to claim 8 wherein the particle size of the small particulate material below after passing through the rod feeder is no greater than 150 mm.
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