CN113385284A - System for improving hourly throughput of one-section ball mill - Google Patents
System for improving hourly throughput of one-section ball mill Download PDFInfo
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- CN113385284A CN113385284A CN202110657894.1A CN202110657894A CN113385284A CN 113385284 A CN113385284 A CN 113385284A CN 202110657894 A CN202110657894 A CN 202110657894A CN 113385284 A CN113385284 A CN 113385284A
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- ball mill
- pump
- stage
- cyclone
- stage ball
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
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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
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
Abstract
The invention relates to the technical field of mineral processing, in particular to a system for improving the hourly processing capacity of a first-stage ball mill, which is used for solving the problem of higher cost of improving the hourly processing capacity of the first-stage ball mill in a concentrating mill in the prior art. The cyclone type ore feeding device comprises a first-stage ball mill, a first pump pool, a first slurry pump, a first cyclone and a second cyclone, wherein the first cyclone is connected with the first-stage ball mill, the second pump pool is connected with a first-stage ore feeding pump, the second cyclone is connected with a second-stage ball mill, the second-stage ball mill is connected with a third pump pool, the third pump pool is connected with an ore feeding pump, the ore feeding pump is connected with a third cyclone, the third cyclone is connected with the second-stage ball mill, the fourth pump pool is connected with a second-stage ore feeding pump, and the second-stage ore feeding pump is connected with the second pump pool. According to the technical scheme, under the condition of low modification cost, the processing capacity of the first-stage ball mill during the operation can be greatly improved.
Description
Technical Field
The invention relates to the technical field of mineral processing, in particular to a system for improving the hourly processing capacity of a first-stage ball mill.
Background
The mineral separation is a process of separating useful minerals from gangue minerals by adopting a gravity separation method, a flotation method, a magnetic separation method, an electric separation method and the like after crushing and grinding the ores according to the physical and chemical properties of different minerals in the ores, separating various symbiotic useful minerals from each other as much as possible, and removing or reducing harmful impurities so as to obtain raw materials required by smelting or other industries.
The mineral processing system in the prior art mainly comprises a first-stage grinding classification system and a second-stage grinding classification system, wherein the first-stage grinding classification system comprises 4 cyclones, 2 cyclones operate, and 2 cyclones are reserved. The two cyclones are respectively controlled by a 1# slurry pump and a 2# slurry pump. The overflow granularity of the first-stage cyclone is 68 percent of-200 meshes. The steel ball is
Low chromium cast ball. The filling rate of the first-stage ball mill is 32 percent; the belt feed is magnetized and roasted ferromagnetic minerals; the two-stage ore grinding grading system comprises a model of
Lattice type ball mill with cyclone of the type
Size of sand setting nozzle
The cyclone group consists of 8 cyclones, 4 cyclones operate, and 4 cyclones are reserved; the overflow granularity of the two-stage cyclone is 85 percent of-200 meshes; the steel ball is
The filling rate of the two-stage ball milling is 25 percent; the feeding is magnetic concentrate which is separated by a section of weak magnetic separation, and the ore separation can be carried out according to the first section of ore grinding grading system and the second section of ore grinding grading system.
However, the first-stage ore grinding classification system and the second-stage ore grinding classification system in the ore dressing system are mutually separated and independent, that is, the ore to be selected needs to be selected by the first-stage ore grinding classification system and then is selected by the second-stage ore grinding classification system, the traditional method for improving the first-stage ball grinding treatment capacity generally increases the number of first-stage ball grinding machines or a crushing process, requires large capital for modification, needs to occupy land, newly-built plants, ore bins and the like, and is difficult to achieve, and the improvement of the treatment capacity of the first-stage ball grinding machine in an ore dressing plant is of great importance to the reduction of the whole flow cost of the ore dressing process. Therefore, a system for improving the processing capacity of the first-stage ball mill of the concentrating mill by fully utilizing the existing standby second-stage ball milling resources under the condition of low reconstruction cost is urgently needed.
Disclosure of Invention
Based on the problems, the invention provides a system for improving the hourly processing capacity of a first-stage ball mill, which is used for solving the problem that the improvement cost of the hourly processing capacity of the first-stage ball mill of a concentrating mill is larger in the prior art. In the invention, the second cyclone in the first-stage ore grinding classification system is connected with the second-stage ball mill in the second-stage ore grinding classification system, so that part of settled sand in the second cyclone can be conveyed into the second-stage ball mill, thereby reducing the sand return amount of the first-stage ball mill, further improving the machine hour treatment capacity of the first-stage ball mill, and thus, the original system is not greatly improved, the improvement cost is lower, but the machine hour treatment capacity of the first-stage ball mill can be greatly improved.
The invention specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a system for improve throughput of one section ball mill during operation, includes one section ball mill, one section ball mill is connected with first pump pond, first pump pond is connected with a sediment stuff pump, a sediment stuff pump is connected with a swirler and No. two swirlers, a swirler and No. two swirlers all are connected with the second pump pond, a swirler is connected with one section ball mill, the second pump pond is connected with one section pump of going up the ore deposit, No. two swirlers are connected with the two-section ball mill, the two-section ball mill is connected with the third pump pond, the third pump pond is connected with the pump of giving the ore deposit, it is connected with No. three swirlers to give the ore deposit pump, No. three swirlers are connected with the two-section ball mill, and upper portion is connected with the fourth pump pond, the fourth pump pond is connected with two sections pump of going up the ore deposit pump, the two sections pump of going up the ore deposit is connected with the second pump pond.
Preferably, first pump pond still is connected with No. two sediment stuff pumps, No. two sediment stuff pumps are connected with No. four swirler and No. five swirler, No. four swirler and No. five swirler all are connected with the second pump pond, and the lower part all is connected with one section ball mill, the quantity of one section ball mill and two-stage ball mill is a plurality of.
Preferably, a plurality of the first-stage ball mills and the second-stage ball mills are arranged in the same space, the first-stage ball mills and the second-stage ball mills are arranged in a mutually crossed mode, and at least 1 second ball mill exists for standby when an ore selecting plant runs at full load.
Preferably, the number of the ore feeding pumps, the first-stage ore feeding pumps and the second-stage ore feeding pumps is 2.
Preferably, the ratio of the number of the steel balls with the diameter of 100 mm added in the two-stage ball mill to the number of the steel balls with the diameter of 60 mm is as follows: 1:1.
The invention has the following beneficial effects:
(1) in the invention, the second cyclone in the first-stage ore grinding classification system is connected with the second-stage ball mill in the second-stage ore grinding classification system, so that part of settled sand in the second cyclone can be conveyed into the second-stage ball mill, thereby reducing the sand return amount of the first-stage ball mill, further improving the machine hour treatment capacity of the first-stage ball mill, and thus, the original system is not greatly improved, the improvement cost is lower, but the machine hour treatment capacity of the first-stage ball mill can be greatly improved.
(2) The proportion of the number of the steel balls with the diameter of 100 mm added in the two-stage ball mill to the number of the steel balls with the diameter of 60 mm is as follows: 1:1, the filling rate of the second-stage ball mill is increased from 25% to 30%, so that the second-stage ball mill can process the settled sand of the second cyclone.
(3) The invention has the advantages that the number of the first-stage ball mill and the second-stage ball mill is multiple, when the second-stage ball mill has a fault, the second slurry pump is started, the standby secondary ball mill is operated, the hourly processing capacity of the original first-stage ball mill is recovered, a first-stage ball mill closed grading system is formed, and mineral separation is continued.
Drawings
FIG. 1 is a system flow diagram of the present invention;
reference numerals: the slurry pump comprises a first slurry pump 1, a first pump pool 2, a first-section ball mill 3, a fourth cyclone 4, a fifth cyclone 5, a first cyclone 6, a second cyclone 7, a second-section ball mill 8, a third cyclone 9, a fourth pump pool 10, a second-section feeding pump 11, a third pump pool 12, a feeding pump 13, a first-section feeding pump 14, a second pump pool 15 and a second slurry pump 16.
Detailed Description
For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.
Example 1:
as shown in fig. 1, a system for improving the processing capacity of a first-stage ball mill during operation comprises a first-stage ball mill 3, the first-stage ball mill 3 is connected with a first pump pool 2, the first pump pool 2 is connected with a first slurry pump 1, the first slurry pump 1 is connected with a first cyclone 6 and a second cyclone 7, the first cyclone 6 and the second cyclone 7 are both connected with a second pump pool 15, the first cyclone 6 is connected with the first-stage ball mill 3, the second pump pool 15 is connected with a first-stage ore feeding pump 14, the second cyclone 7 is connected with a second-stage ball mill 8, the second-stage ball mill 8 is connected with a third pump pool 12, the third pump pool 12 is connected with an ore feeding pump 13, the ore feeding pump 13 is connected with a third cyclone 9, the third cyclone 9 is connected with the second-stage ball mill 8, the upper portion is connected with a fourth pump pool 10, the fourth pump pool 10 is connected with a second-stage ore feeding pump 11, and the second-stage ore feeding pump 11 is connected with the second pump pool 15.
The working principle is as follows: when the two-stage ball mill 8 operates normally, the standby two-stage ball mill 8 treats the settled sand of the one-stage ball mill 3, and the treatment capacity of the one-stage ball mill is improved, which specifically comprises the following steps: ore enters a first-stage ball mill 3 through an ore feeding belt, enters a first pump pool 2 after being ground by the first-stage ball mill 3, a first slurry pump 1 is operated, part of settled sand returns to the first-stage ball mill 3 through a first cyclone 6, part of settled sand enters a second-stage ball mill 8 through a second cyclone 7, after being ground by the second-stage ball mill 8, the ore enters a second pump pool 15, then enters a third cyclone 9 for classification through an ore feeding pump 13, the settled sand of the third cyclone 9 returns to the second-stage ball mill 8, the third cyclone 9 overflows to a fourth pump pool 10, a second-stage ore feeding pump is operated, and ore pulp returns to the second pump pool.
Example 2:
as shown in fig. 1, on the basis of the above embodiment 1, this embodiment provides a preferable system when the two-stage ball mill 8 has a failure, that is, the first pump sump 2 is further connected with a second slurry pump 16, the second slurry pump 16 is connected with a fourth cyclone 4 and a fifth cyclone 5, the fourth cyclone 4 and the fifth cyclone 5 are both connected with the second pump sump 15, the lower portions of the four cyclones are both connected with the first-stage ball mill 3, and the number of the first-stage ball mill 3 and the two-stage ball mill 8 is plural.
In this embodiment: when other two-stage ball mills have faults, the standby two-stage ball mill 8 operates without processing the settled sand of the second cyclone 7, and the method specifically comprises the following steps: the ore enters a first-stage ball mill 3 through an ore feeding belt, after being ground by the first-stage ball mill 3, the ore enters a first pump pool 2, a second slurry pump 16 is operated, settled sand in a fourth cyclone 4 and a fifth cyclone 5 returns to the first-stage ball mill 3, and the fourth cyclone 4 and the fifth cyclone 5 overflow into a second pump pool 15 to form a first-stage ball milling closed-loop grading system.
Preferably, a plurality of the first-stage ball mills 3 and the second-stage ball mills 8 are arranged in the same space, the first-stage ball mills 3 and the second-stage ball mills 8 are arranged in a mutually crossed manner, and at least 1 second-stage ball mill 8 is reserved when the ore selecting plant runs at full load. For example, the ore grinding classification system has 9 billiard ball mills, 5 ball mills are first-stage ball mills, 4 ball mills are second-stage ball mills, and when in full-load production, the second-stage ball mill 8 runs 3 ball mills, wherein one ball mill is standby, so that the standby second-stage ball mill 8 can be fully utilized, the processing capacity of the first-stage ball mill 3 during the production is improved, only one first-stage ball mill 3 and one standby second-stage ball mill 8 are modified, and the rest first-stage ball mill 3 and the rest second-stage ball mill 8 are not changed, so that the modification range is small, and the modification cost is lower.
Preferably, the number of the feeding pumps 13, the first-stage feeding pumps 14 and the second-stage feeding pumps 11 is 2, one is standby, and the other is running, so that the coping capability of normal ore dressing can be further increased if a fault occurs.
Preferably, the ratio of the number of steel balls with a diameter of 100 mm added in the two-stage ball mill 8 to the number of steel balls with a diameter of 60 mm is: 1:1, and the filling rate of the second-stage ball mill is increased from 25% to 30% so that the second-stage ball mill 8 can process the settled sand of the second cyclone 7.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the process of verifying the invention, and are not intended to limit the scope of the invention, which is defined by the claims.
Claims (5)
1. The utility model provides a system for improve one section ball mill machine hour throughput, includes one section ball mill (3), its characterized in that: the improved slurry pump is characterized in that the first ball mill (3) is connected with a first pump pool (2), the first pump pool (2) is connected with a first slurry pump (1), the first slurry pump (1) is connected with a first cyclone (6) and a second cyclone (7), the first cyclone (6) and the second cyclone (7) are both connected with a second pump pool (15), the first cyclone (6) is connected with the first ball mill (3), the second pump pool (15) is connected with a first ore feeding pump (14), the second cyclone (7) is connected with a second ball mill (8), the second ball mill (8) is connected with a third pump pool (12), the third pump pool (12) is connected with an ore feeding pump (13), the ore feeding pump (13) is connected with a third cyclone (9), the third cyclone (9) is connected with the second ball mill (8), the upper part of the third cyclone (9) is connected with a fourth pump pool (10), the fourth pump pool (10) is connected with a second-section ore feeding pump (11), and the second-section ore feeding pump (11) is connected with the second pump pool (15).
2. A system for increasing the throughput of a single stage ball mill according to claim 1, wherein: first pump pond (2) still are connected with No. two slurry pumps (16), No. two slurry pumps (16) are connected with No. four swirler (4) and No. five swirler (5), No. four swirler (4) and No. five swirler (5) all are connected with second pump pond (15), and the lower part all is connected with one section ball mill (3), the quantity of one section ball mill (3) and two-stage process ball mill (8) is a plurality ofly.
3. A system for increasing the throughput of a single stage ball mill according to claim 2, wherein: the first-stage ball mills (3) and the second-stage ball mills (8) are arranged in the same space, the first-stage ball mills (3) and the second-stage ball mills (8) are arranged in a mutually crossed mode, and when an ore selecting plant runs at full load, at least 1 second-stage ball mill (8) is reserved.
4. A system for increasing the throughput of a single stage ball mill according to claim 1, wherein: the number of the ore feeding pumps (13), the number of the first-stage ore feeding pumps (14) and the number of the second-stage ore feeding pumps (11) are all 2.
5. A system for increasing the throughput of a single stage ball mill according to claim 1, wherein: the proportion of the number of the steel balls with the diameter of 100 mm added in the two-section ball mill (8) to the number of the steel balls with the diameter of 60 mm is as follows: 1:1.
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