CN212663812U - Hard rock combined crushing system of semi-autogenous mill - Google Patents
Hard rock combined crushing system of semi-autogenous mill Download PDFInfo
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- CN212663812U CN212663812U CN202020758725.8U CN202020758725U CN212663812U CN 212663812 U CN212663812 U CN 212663812U CN 202020758725 U CN202020758725 U CN 202020758725U CN 212663812 U CN212663812 U CN 212663812U
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Abstract
The utility model discloses a semi-autogenous mill obstinate stone combination crushing system, including semi-autogenous mill, cylinder screen, former screen go up the obstinate stone pipeline in ore deposit, current screen go up the obstinate stone chute in ore deposit, flow direction change over switch, conveying mechanism and ball mill, through the flow direction of flow direction change over switch control obstinate stone, carry obstinate stone to the ball mill through conveying mechanism. So make the utility model discloses can realize that semi-autogenous mill ore discharge end oversize ore deposit enstating stone selects no longer to get into semi-autogenous mill regrinding, but gets into the ball mill regrinding through conveying mechanism to improve ore grinding efficiency and ore grinding effect, semi-autogenous mill platform is imitated and is improved 205t/h by 200t/h, has realized the steady operation of semi-autogenous mill enstating stone crushing system on the one hand, and on the other hand has increased company's economic benefits.
Description
Technical Field
The utility model relates to a grind ore equipment technical field, concretely relates to semi-autogenous mill hard rock crushing system.
Background
The semi-automatic grinding machine adopts ores and a small amount of steel balls as grinding media, and the working principle of the semi-automatic grinding machine is that the ores are crushed by means of mutual impact among the ores and mutual grinding among the ores and the steel balls. The grinding medium has large crushing ratio and small consumption of grinding medium, so that the grinding medium is widely applied to the field of grinding. The semi-autogenous mill can be used for directly feeding the coarsely crushed ore into the semi-autogenous mill, so that the semi-autogenous mill does not need middle crushing and fine crushing operation, the crushing flow is simplified, the equipment and civil engineering investment are saved, and the semi-autogenous mill only needs to be added with a small amount of ore grinding medium, thereby reducing the operation cost of the operation.
The feeding granularity of the semi-autogenous mill is generally 0-250 mm, because the feeding granularity proportion of the semi-autogenous mill in the ore dressing plant is not in place and the ore property is different, the impact force of the ore in the semi-autogenous mill is not enough, a part of the ore which is hard to crush and hard to grind and has high hardness can not be crushed and can be directly discharged from the ore discharge end of the semi-autogenous mill as hard rock, in order to ensure the recovery rate of useful minerals in the ore dressing plant, the part of the hard rock needs to be fed into the semi-autogenous mill again for regrinding, and forms a closed circuit with the semi-autogenous mill, namely a hard rock crushing system. However, the effect of the mode is not good, the semi-automatic grinding machine cannot fully grind part of the hard rock, so that the hard rock discharged by the semi-automatic grinding machine is increased, useless work is caused, the table effect is influenced, and the semi-automatic grinding can cause the phenomenon of swelling.
The presence of the above-mentioned problems affects the stable operation of the autogenous grinding system. Therefore, it is necessary to design and develop a refractory stone crushing system and method of a semi-autogenous mill with stable operation and high operating efficiency so as to ensure the stable operation of the whole semi-autogenous mill system.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to prior art's defect, provide one kind and realize simple structure, operation stable, ore grinding effect more, operating efficiency is high, convenient operation is simple, the semi-autogenous mill of resource utilization efficient hard stone makes up broken system.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a broken system of half autogenous mill obstinate stone combination, is including half autogenous mill and drum sieve, and the drum sieve docks with half autogenous mill ore discharge end level to accept half autogenous mill exhaust ore, its characterized in that: an original oversize ore hard rock pipeline for receiving the grinded ore hard rock discharged from the drum screen is arranged below the rear part of the drum screen, and an on-screen ore hard rock chute for receiving the grinded ore hard rock discharged from the original oversize ore hard rock pipeline is arranged below the rear part of the original oversize ore hard rock pipeline; the discharge end of the original ore-screening refractory stone pipeline is connected back to the semi-autogenous mill to form an ore grinding closed-loop system together with the semi-autogenous mill; a conveying mechanism is butted below the existing ore-screening hard rock chute, and a ball mill is butted on the conveying mechanism; the positions of the existing sieve-mounted ore hard rock chute and the original sieve-mounted ore hard rock pipeline in butt joint are provided with flow direction change-over switches, the hard rock flow direction channels are controlled through the flow direction change-over switches to return to the semi-automatic grinding machine through the original sieve-mounted ore hard rock pipeline, or the original sieve-mounted ore hard rock pipeline enters the existing sieve-mounted ore hard rock chute and finally enters the ball mill.
Furthermore, conveying mechanism is oversize ore belt conveyor, and the refractory rock chute of existing oversize ore docks with the one end of oversize ore belt conveyor, and the ball mill docks with the other end of oversize ore belt conveyor.
Further, one end, close to the ball mill, of the oversize ore belt conveyor is provided with a bucket elevator, the bucket elevator is connected with a ball mill feeding joint, the ball mill feeding joint is connected with a ball mill feeding chute, and the ball mill is connected with the ball mill feeding chute.
Further, flow direction change over switch is manual change over switch, through flow direction change over switch realize the obstinate stone on the sieve past former obstinate stone pipeline on the sieve with the manual switching of two direction of delivery of current obstinate stone chute on the sieve to carry out the ore grinding in different ways.
Furthermore, the motor of the oversize belt conveyor and the motor of the bucket elevator are both provided with a local and remote start-stop control module, and the local and remote start-stop control module is linked with an ore grinding automatic control system to realize local and remote control.
Preferably, the screen mesh of the cylindrical screen is a rubber grid screen with a mesh size of 25mm x 30 mm.
Preferably, the semi-autogenous mill adopts a steel ball with the diameter of 120MM as an ore grinding medium, and the ball mill adopts a steel ball with the diameter of 80MM as an ore grinding medium, both of which are existing devices and can be directly purchased in the market.
The utility model grinds ores by matching the semi-automatic mill with the ball mill, and is provided with a corresponding material transfer mechanism, the semi-automatic mill uses a phi 120MM steel ball as an ore grinding medium, the diameter of the steel ball is larger, the gap between the steel ball and the steel ball is larger, and partial hard rocks cannot be fully ground; the sieve-mounted obstinate ore at the ore discharge end of the semi-autogenous mill is conveyed to the ball mill for regrinding through the material transfer mechanism, the ball mill uses a steel ball with the diameter of 80mm as an ore grinding medium, the diameter of the steel ball is smaller, and gaps between the steel ball and the steel ball are smaller, so that the obstinate ore can be fully ground. Utilize respective advantage of semi-autogenous mill and ball mill, make good use of the advantages and avoid the weak point, avoid semi-autogenous mill "rise tripe" phenomenon to promote semi-autogenous mill platform and imitate, realize semi-autogenous mill, ball mill grinding efficiency maximize, high-efficient, semi-autogenous mill platform is imitated and is improved to 205t/h by 200t/h, has realized the steady operation of semi-autogenous mill obstinate stone crushing system on the one hand, and on the other hand has increased company's economic benefits.
Additionally, the utility model discloses reduce present semi-autogenous mill ejection of compact sieve mesh size to the mesh size and be 25mm 30mm, can reduce to flow in the pulp chest ore pulp granularity to improve the pump spare, overflow the life cycle of piece, reduce the purchase cost of consumption piece.
Drawings
Fig. 1 is a schematic view of the front box of the present invention.
In the figure, 1 is a semi-automatic mill, 2 is a cylinder screen, 3 is an original oversize ore hard stone pipeline, 4 is an existing oversize ore hard stone chute, 5 is a flow direction change-over switch, 51 is a first gear, 52 is a second gear, 6 is an oversize ore belt conveyor, 7 is a bucket elevator, 8 is a ball mill feeding joint, 9 is a ball mill feeding chute, and 10 is a ball mill.
Detailed Description
The invention will be further explained by the following embodiments with reference to the attached drawing 1:
the semi-autogenous mill hard rock combined crushing system comprises a semi-autogenous mill hard rock combined crushing system, wherein the semi-autogenous mill hard rock combined crushing system comprises a semi-autogenous mill 1 and a cylindrical screen 2, and the cylindrical screen 2 is horizontally butted with a mine discharging end of the semi-autogenous mill 1 so as to receive ores discharged by the semi-autogenous mill 1; an original oversize ore hard rock pipeline 3 for receiving the mill ore hard rocks discharged from the drum screen 2 is arranged at the rear lower part of the drum screen 2, and an on-screen ore hard rock chute 4 for receiving the mill ore hard rocks discharged from the original oversize ore hard rock pipeline 3 is arranged at the rear lower part of the original oversize ore hard rock pipeline 3; the discharge end of the original oversize ore hard rock pipeline 3 is connected back to the semi-automatic grinding machine 1 to form an ore grinding closed-loop system together with the semi-automatic grinding machine 1; a conveying mechanism is butted below the existing oversize ore hard rock chute 4, and a ball mill 10 is butted on the conveying mechanism; a flow direction change-over switch 5 is arranged at the butt joint position of the current oversize ore hard rock chute 4 and the original oversize ore hard rock pipeline 3, the flow direction change-over switch 5 can be switched to a first gear 51 to control a hard rock flow direction channel to return to the semi-autogenous mill 1 through the original oversize ore hard rock pipeline 3, and at the moment, an outlet leading to the current oversize ore hard rock chute 4 is closed; the flow direction change-over switch 5 can also be switched to the second stop 52, so that the hard rock enters the now-screened hard rock chute 4 through the original screened hard rock pipeline 3 and finally enters the ball mill 10, and the outlet of the original screened hard rock pipeline 3 is closed at the moment.
The conveying mechanism is an oversize ore belt conveyor 6, the current oversize ore hard rock chute 4 is in butt joint with one end of the oversize ore belt conveyor 6, and the ball mill 10 is in butt joint with the other end of the oversize ore belt conveyor 6.
One end of the oversize ore belt conveyor 6 close to the ball mill 10 is provided with a bucket elevator 7, the bucket elevator 7 is connected with a ball mill feeding joint 8, the ball mill feeding joint 8 is connected with a ball mill feeding chute 9, and the ball mill 10 is connected with the ball mill feeding chute 9.
Flow direction change over switch 5 is manual change over switch, through flow direction change over switch 5 realize sieve the enstating rock toward former sieve go up ore enstating rock pipeline 3 with the manual switching of two direction of delivery of current sieve enstating rock chute 4 to carry out the ore grinding in different ways.
The motor of the oversize ore belt conveyor 6 and the bucket elevator motor 7 are both provided with local and remote start-stop control modules, and are linked with an ore grinding automatic control system through the local and remote start-stop control modules so as to realize local and remote control.
The screen mesh of the cylindrical screen 2 is a rubber grid screen with the mesh size of 25mm x 30 mm.
The semi-automatic mill 1 adopts a steel ball with the diameter of 120MM as an ore grinding medium, the ball mill 10 adopts a steel ball with the diameter of 80MM as an ore grinding medium, and both the steel ball and the ore grinding medium are the existing equipment and can be directly purchased in the market.
The working process is as follows: 1) ore discharge of the semi-autogenous mill 1 is fed into a cylindrical screen 2, and the hard rocks on the screen of the cylindrical screen 2 are fed into a dressing plant for subsequent operation;
2) the screened hard rock can be controlled by a flow direction change-over switch 5 to enter an original screened ore hard rock pipeline 3 and return to the semi-automatic mill 1 for regrinding;
3) the screened hard rock can also enter the current screened hard rock chute 4 to feed into the screened ore belt conveyor 6 through the control of the flow direction change-over switch 5, then enter the ball mill feeding chute 9 through the bucket elevator 7 and the ball mill feeding joint 8, and finally enter the ball mill 10 for regrinding.
The control method of the flow direction changeover switch 5 is as follows: when the baffle is turned to the first gear 51, the baffle is inserted into the inlet of the now-screened hard rock chute 4, and at the moment, the hard rock flows into the original screened hard rock pipeline 3; when turning to second fender position 52, the baffle inserts the hole of former ore deposit enstating stone pipeline 3 on sieving, and the enstating stone flows into ore deposit enstating stone chute 4 on sieving now.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (7)
1. The utility model provides a broken system of half autogenous mill obstinate stone combination, is including half autogenous mill and drum sieve, and the drum sieve docks with half autogenous mill ore discharge end level to accept half autogenous mill exhaust ore, its characterized in that: an original oversize ore hard rock pipeline for receiving the grinded ore hard rock discharged from the drum screen is arranged below the rear part of the drum screen, and an on-screen ore hard rock chute for receiving the grinded ore hard rock discharged from the original oversize ore hard rock pipeline is arranged below the rear part of the original oversize ore hard rock pipeline; the discharge end of the original ore-screening refractory stone pipeline is connected back to the semi-autogenous mill to form an ore grinding closed-loop system together with the semi-autogenous mill; a conveying mechanism is butted below the existing ore-screening hard rock chute, and a ball mill is butted on the conveying mechanism; the positions of the existing sieve-mounted ore hard rock chute and the original sieve-mounted ore hard rock pipeline in butt joint are provided with flow direction change-over switches, the hard rock flow direction channels are controlled through the flow direction change-over switches to return to the semi-automatic grinding machine through the original sieve-mounted ore hard rock pipeline, or the original sieve-mounted ore hard rock pipeline enters the existing sieve-mounted ore hard rock chute and finally enters the ball mill.
2. The combined crushing system of hard rock of semi-autogenous mill of claim 1, characterized in that: conveying mechanism is oversize ore belt conveyor, and the refractory rock chute of existing oversize ore docks with the one end of oversize ore belt conveyor, and the ball mill docks with the other end of oversize ore belt conveyor.
3. The combined crushing system of hard rock of semi-autogenous mill of claim 2, characterized in that: the one end that is close to the ball mill at the ore dressing belt conveyor on the sieve is provided with the bucket elevator, and the bucket elevator is connected with ball mill feeding joint, and ball mill feeding joint is connected with ball mill feeding chute, and the ball mill is connected with ball mill feeding chute.
4. The combined crushing system of hard rock of semi-autogenous mill of claim 1, characterized in that: the flow direction change-over switch is manual change-over switch, realizes through flow direction change-over switch that the obstinate rock is gone to sieve the obstinate rock pipeline on former sieve with two direction of delivery's of current sieve obstinate rock chute manual switching.
5. The combined crushing system of hard rock of semi-autogenous mill of claim 3, characterized in that: the motor of the oversize ore belt conveyor and the motor of the bucket elevator are both provided with local and remote start-stop control modules which are linked with an ore grinding automatic control system.
6. The combined crushing system of hard rock of semi-autogenous mill of claim 1, characterized in that: the screen mesh of the cylindrical screen is a rubber grid screen with the mesh size of 25mm x 30 mm.
7. The combined crushing system of hard rock of semi-autogenous mill of claim 1, characterized in that: the semi-automatic grinding machine adopts a steel ball with the diameter of 120MM as an ore grinding medium, and the ball mill adopts a steel ball with the diameter of 80MM as an ore grinding medium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020758725.8U CN212663812U (en) | 2020-05-09 | 2020-05-09 | Hard rock combined crushing system of semi-autogenous mill |
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| CN202020758725.8U CN212663812U (en) | 2020-05-09 | 2020-05-09 | Hard rock combined crushing system of semi-autogenous mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769125A (en) * | 2022-05-20 | 2022-07-22 | 攀枝花仁江矿业有限公司 | Ore grinding method and fine grinding device of semi-autogenous mill |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769125A (en) * | 2022-05-20 | 2022-07-22 | 攀枝花仁江矿业有限公司 | Ore grinding method and fine grinding device of semi-autogenous mill |
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