CN210207202U - System for collophanite pre-grading, ore grinding grading and separate flotation combined process - Google Patents

System for collophanite pre-grading, ore grinding grading and separate flotation combined process Download PDF

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CN210207202U
CN210207202U CN201921100244.1U CN201921100244U CN210207202U CN 210207202 U CN210207202 U CN 210207202U CN 201921100244 U CN201921100244 U CN 201921100244U CN 210207202 U CN210207202 U CN 210207202U
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equipment
stage
classification
grading
pipeline
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Inventor
Ning Li
李宁
Lei Fu
付磊
Wei Dong
董伟
Binting Cai
蔡彬亭
Tao Wang
王涛
Guoxian Xie
谢国先
Shuanggui Chen
陈双贵
Fan Li
李帆
Hongyan Li
李红艳
Xiaozhu Wu
吴小珠
Lifen Liu
刘丽芬
Runzhe Liu
刘润哲
Wenquan Yang
杨稳权
Hua Peng
彭桦
Ya Li
黎亚
Lan Lyu
吕兰
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Yunnan Phosphate Chemical Group Corp Ltd
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Yunnan Phosphate Chemical Group Corp Ltd
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Abstract

The utility model discloses a collophanite is in advance hierarchical, grind the ore grading, the system of flotation joint technology respectively relates to collophanite ore dressing equipment technical field. The raw ore after primary crushing enters a wet sieve grading device to carry out wet sieve grading according to the grain size of 0.2mm, a coarse grain product enters a first-stage grinding machine to be crushed, the crushed coarse grain product enters a first-stage grading device to be graded, the coarse grain with the grain size of 0.2mm returns to the first-stage grinding machine to be reground, the fine grain with the grain size of 0.2mm enters a second-stage grading device, the coarse grain with the grain size of 0.074mm after the second-stage grading enters a second-stage grinding machine to be reground, and the fine grain with the grain size of 0.074mm after the. And (3) feeding the-0.2 mm fine grain product subjected to wet sieve classification into secondary classification equipment for secondary classification, feeding the +0.074mm coarse grain into a secondary grinding machine for regrinding, and feeding the-0.074 mm fine grain into a first flotation machine for flotation. The concentrates produced by the first flotation machine and the second flotation machine are combined to be final concentrates, and the tailings are combined to be final tailings. The system improves the processing capacity of the mill, improves the production efficiency, reduces the consumption of reagents and improves the product quality.

Description

System for collophanite pre-grading, ore grinding grading and separate flotation combined process
Technical Field
The utility model relates to a collophanite ore dressing equipment technical field, concretely relates to system that collophanite is hierarchical in advance, ground ore grading, flotation respectively unite technology.
Background
Along with the rapid increase of the exploitation amount of phosphorite in China, rich ore resources are increasingly scarce, the development and utilization of medium-grade and low-grade phosphorite are more and more, and the exploitation and mineral separation technology of the collophanite is more and more mature. At present, collophanite generally adopts a flotation process, which mainly comprises the steps of crushing and screening raw ore through a first-stage mill, returning coarse-fraction ore to the first-stage mill for continuous crushing, feeding fine-fraction ore to a second-stage mill for crushing and screening, returning coarse ore particles to the second-stage mill for continuous crushing, and feeding fine ore particles to a flotation machine for flotation to obtain concentrate and tailings.
The process system has the following problems in practical application:
1. the raw ore directly enters the ore grinding stage, so that fine-fraction ore enters the first-stage grinding machine, the phenomenon of over-grinding exists in the first-stage grinding machine, the ore grinding efficiency of the grinding machine is seriously influenced, and the ore dressing processing capacity and the production efficiency are restricted.
2. The primary fine mud in the ore generally has the granularity of less than 5 mu m, small granularity, large specific surface area and high surface energy, and often adsorbs a large amount of flotation reagents in the flotation process and also adheres to the surfaces of other ore particles, thereby influencing the flotation effect, increasing the reagent consumption, causing unsatisfactory ore dressing index and increased ore dressing cost. At present, the desliming is mostly carried out by water washing, fine mud cannot be completely removed by the water washing, the cost is increased, the whole process flow is prolonged, and the production efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a collophanite is hierarchical in advance, grind the ore grading, the system of flotation joint technology respectively, solve the mill inefficiency that exists among the current ore dressing system, cross the serious problem of grinding phenomenon, solve in step because of the existence of native fine mud leads to the reagent to consume the unsatisfactory problem of high, ore dressing index.
In order to solve the technical problem, the utility model adopts the following technical scheme: the collophanite pre-grading, ore grinding and grading and separate flotation combined process system is characterized in that: is formed by connecting wet sieve classification equipment, secondary classification equipment, a first flotation machine, a first section grinding machine, a first section classification equipment, a second section grinding machine, a second section classification equipment and a second flotation machine in sequence through pipelines,
the wet sieve classification equipment comprises a wet sieve classification equipment feed port, a wet sieve classification equipment fine grain material port, a first pump pool feed port, a first sand pump, a second flotation machine fine grain material port, a second flotation machine feed port and a second flotation machine feed port, wherein raw ores enter the wet sieve classification equipment feed port; the coarse grain material port of the secondary grading equipment is connected with the material inlet of the two-stage mill through a pipeline;
the coarse grain material port of the wet screen classification equipment is connected with the material inlet of the first section mill, the material outlet of the first section mill is connected with the material inlet of the second pump pool, the material outlet of the second pump pool is connected with one end of a second sand pump through a pipeline, the other end of the second sand pump is connected with the material inlet of the first section classification equipment through a pipeline, and the coarse grain material port of the first section classification equipment is connected with the material inlet of the first section mill through a pipeline;
the fine grain material port of the first-stage grading equipment is connected with the feed port of the third pump pool through a pipeline, the discharge port of the third pump pool is connected with one end of a third sand pump through a pipeline, the other end of the third sand pump is connected with the feed port of the second-stage grading equipment through a pipeline, the coarse grain material port of the second-stage grading equipment is connected with the feed port of the second-stage mill through a pipeline, and the discharge port of the second-stage mill is connected with the feed port of the third pump pool; the fine grain material port of the second-stage grading equipment is connected with the material inlet of the second flotation machine through a pipeline, and the material outlet of the second flotation machine is connected with the concentrate storage equipment and the tailing storage equipment.
The technical scheme is that the feeding ports of the first pump pool, the second pump pool and the third pump pool are respectively provided with a water inlet pipeline, and the water inlet pipelines are provided with valves.
The further technical proposal is that the wet sieve classification equipment is a cyclone or a curved sieve.
A further technical solution is that the re-classifying device is a cyclone or a spiral classifier.
The further technical proposal is that the first-stage classification equipment and the second-stage classification equipment are cyclones.
The further technical proposal is that the first-stage mill and the second-stage mill are ball mills.
The working principle is as follows: the raw ore after primary crushing enters a wet sieve grading device to carry out wet sieve grading according to the particle size, a coarse grain product enters a primary grinding machine to be crushed, the crushed coarse grain product enters the primary grading device to be graded, the coarse grain with the particle size of 0.2mm returns to the primary grinding machine to be ground again, the fine grain with the particle size of 0.2mm enters a secondary grading device, the coarse grain with the particle size of 0.074mm after the secondary grading enters a secondary grinding machine to be ground again, and the fine grain with the particle size of 0.074mm after the secondary grading enters a second flotation machine to be floated.
And (3) feeding the-0.2 mm fine grain product subjected to wet sieve classification into secondary classification equipment for secondary classification, feeding the +0.074mm coarse grain into a secondary grinding machine for regrinding, and feeding the-0.074 mm fine grain into a first flotation machine for flotation. The concentrates produced by the first flotation machine and the second flotation machine are combined to be the final concentrate product, and the tailings are combined to be the final tailing product.
In order to facilitate storage and water addition, a first pump pool and a first sand pump are arranged between the wet sieve classification equipment and the secondary classification equipment; a second pump pool and a second sand pump are arranged between the first-stage grinding machine and the first-stage grading equipment; and a third pump pool and a third sand pump are arranged between the two-stage mill and the two-stage grading equipment.
In order to conveniently add water to adjust the concentration of the mixture in the pump pools, a water inlet pipeline is arranged at the feed inlet of each pump pool; in order to conveniently control the water inflow, a valve is arranged on the water inlet pipeline.
Compared with the prior art, the beneficial effects of the utility model are that: the wet screening grading device is used for grading the raw ore according to the particle size of 0.2mm, pre-separating fine particles with the particle size of-0.2 mm (accounting for 10.51 percent of the raw ore to be ground in detection), and only allowing the fine particles with the particle size of +0.2mm to enter a grinding machine for grinding, so that qualified particle size is reduced to enter the grinding machine, the over-grinding phenomenon in the grinding machine is reduced, the service life of the grinding machine is prolonged, and the processing capacity of the grinding machine is improved.
And after the product with the size fraction of-0.2 mm which is classified in advance is classified again, the part with the size fraction of +0.074mm enters a second-stage grinding machine for grinding, finally, the qualified ground product is formed and enters a separate flotation process, and the part with the size fraction of-0.074 mm (which accounts for 7.78% of the ground raw ore by detection) enters the separate flotation process. The primary fines are typically less than 5 μm in size, resulting in a majority of the fines being present in the-0.074 mm size fraction ore. Therefore, the ore with large mud content in the grade of-0.074 mm in the raw ore and the grade of +0.074mm with small mud content are respectively floated, so that the desliming effect is achieved, the separation effect is improved, and the reagent consumption can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a flow chart of the present invention.
In the figure: 1-wet sieve classification equipment, 2-secondary classification equipment, 3-a first flotation machine, 4-a first section grinding machine, 5-a first section classification equipment, 6-a second section grinding machine, 7-a second section classification equipment, 8-a second flotation machine, 9-a first pump pool, 10-a first sand pump, 11-a second pump pool, 12-a second sand pump, 13-a third pump pool, 14-a third sand pump, 15-a water inlet pipeline and 16-a valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Fig. 1 shows a collophanite pre-grading, grinding and grading, and separate flotation combined process system, which is characterized in that: the device is formed by sequentially connecting wet sieve classification equipment 1, secondary classification equipment 2, a first flotation machine 3, a first-stage grinding machine 4, first-stage classification equipment 5, a second-stage grinding machine 6, second-stage classification equipment 7 and a second flotation machine 8 through pipelines.
The wet sieve classification equipment 1 is characterized in that a feed port of the wet sieve classification equipment 1 is used for raw ore to enter, a fine grain material port of the wet sieve classification equipment 1 is connected with a feed port of a first pump pool 9, a discharge port of the first pump pool 9 is connected with one end of a first sand pump 10 through a pipeline, the other end of the first sand pump 10 is connected with a feed port of the secondary classification equipment 2 through a pipeline, a fine grain material port of the secondary classification equipment 2 is connected with a feed port of a first flotation machine 3 through a pipeline, and a discharge port of the first flotation machine 3 is connected with concentrate storage equipment and tailing storage equipment; the coarse material port of the secondary grading equipment 2 is connected with the feeding port of the secondary grinding machine 6 through a pipeline.
The wet sieve classification equipment 1 coarse grain material mouth is connected with 4 pan feeding mouths of one section mill, and 4 discharge gates of one section mill are connected with 11 feed inlets of second pump pond, and 11 discharge gates of second pump pond are connected with 12 one ends of second sand pump through the pipeline, and 12 other ends of second sand pump are connected with 5 feed inlets of one section classification equipment through the pipeline, and 5 coarse grain material mouths of one section classification equipment are connected with 4 pan feeding mouths of one section mill through the pipeline.
The fine grain material port of the first-stage grading equipment 5 is connected with the material inlet of a third pump pool 13 through a pipeline, the material outlet of the third pump pool 13 is connected with one end of a third sand pump 14 through a pipeline, the other end of the third sand pump 14 is connected with the material inlet of a second-stage grading equipment 7 through a pipeline, the coarse grain material port of the second-stage grading equipment 7 is connected with the material inlet of a second-stage grinding machine 6 through a pipeline, and the material outlet of the second-stage grinding machine 6 is connected with the material inlet of the third pump; and a fine grain material port of the second-stage grading equipment 7 is connected with a material inlet of a second flotation machine 8 through a pipeline, and a material outlet of the second flotation machine 8 is connected with concentrate storage equipment and tailing storage equipment.
As shown in fig. 2, the raw ore after primary crushing enters a feed port of a wet sieve grading device 1 for pre-grading, a-0.2 mm fine fraction product after grading enters a first pump pool 9 from a fine material port of the wet sieve grading device 1 and is pumped into a secondary grading device 2 from a discharge port of the wet sieve grading device through a first sand pump 10 for grading, a-0.074 mm fine fraction product after grading enters a first flotation machine 3 from a fine material port of the secondary grading device 2 for flotation to obtain a concentrate i and a tailings i after flotation, and the concentrate i and the tailings i are respectively arranged in a concentrate storage device and a tailings storage device. The coarse fraction product of +0.074mm from the coarse grain outlet of the secondary classifier 2 is fed to a secondary mill 6 for regrinding.
And the +0.2mm coarse fraction product discharged from the coarse grain discharge port of the wet screening grading device 1 enters a first-stage grinding machine 4 to be ground, the ground mineral product enters a second pump pool 11 from a discharge port, the ground mineral product is pumped into a first-stage grading device 5 through a second sand pump 12 to be graded for the first stage, and the +0.2mm coarse fraction product discharged from the coarse grain discharge port of the first-stage grading device 5 after grading enters the first-stage grinding machine 4 again to be ground until the-0.2 mm qualified fraction product is obtained.
And fine fraction products of minus 0.2mm discharged from the coarse grain discharge port of the first-stage grading equipment 5 enter a third pump pool 13, are pumped into a second-stage grading equipment 7 through a third sand pump 14 for second-stage grading, coarse fraction products of plus 0.074mm discharged from the coarse grain discharge port of the second-stage grading equipment 7 after grading enter a second-stage mill 6 for regrinding, and the regrinding ore products enter the third pump pool 13 and enter the second grading equipment 7 through the third sand pump 14 for grading. And (3) feeding a fine-grained product of-0.074 mm discharged from a fine grain discharge port of the secondary grading equipment 7 into a second flotation machine 8 for flotation to obtain a concentrate II and a tailing II, merging the concentrate II and the concentrate I as a final concentrate, and placing the final concentrate in concentrate storage equipment, and placing the tailing II and the tailing I as a final tailing in tailing storage equipment.
The wet sieve classification equipment 1 classifies raw ore according to the grain diameter of 0.2mm, separates fine grains of-0.2 mm in advance, and only allows the plus 0.2mm grain fraction to enter the mill for grinding, so that qualified grain fractions are reduced to enter the mill, the over-grinding phenomenon in the mill is reduced, the service life of the mill is prolonged, and the processing capacity of the mill is improved.
And after the product with the size fraction of-0.2 mm which is classified in advance is classified again, the part with the size fraction of +0.074mm enters a second-stage grinding machine for grinding, finally, the qualified ground product is formed and enters a separate flotation process, and the part with the size fraction of-0.074 mm (which accounts for 7.78% of the ground raw ore by detection) enters the separate flotation process. The primary fines are typically less than 5 μm in size, resulting in a majority of the fines being present in the-0.074 mm size fraction ore. Therefore, the ore with large mud content in the-0.074 mm size fraction in the raw ore is respectively floated with the +0.074mm size fraction with small mud content, the separation effect is improved, and the reagent consumption can be reduced.
In order to facilitate storage and water addition, a first pump pool 9 and a first sand pump 10 are arranged between the wet sieve classification device 1 and the secondary classification device 2; a second pump pool 11 and a second sand pump 12 are arranged between the first-stage grinding machine 4 and the first-stage grading equipment 5; a third pump pool 13 and a third sand pump 14 are arranged between the secondary grinding machine 6 and the secondary grading equipment 7.
Through the arrangement of the process flows of pre-grading, ore grinding grading and respective flotation, the processing capacity of a grinding machine is greatly improved, the production efficiency is improved, meanwhile, the reagent consumption is reduced, and the quality of sorted products is improved. Through actual production evaluation, the system can improve the mill load by 7.14 percent, the yield of the flotation concentrate by 0.54 percent, the recovery rate by 1.86 percent and the concentrate P2O5The grade is improved by 0.92, the grade of MgO is reduced by 0.1, the regulator can be reduced by 8.41 percent (1.85kg/t), and the collector can be reduced by 9.75 percent (0.39 kg/t).
Example 2
In order to further optimize the technical solution in embodiment 1, in this embodiment, the feeding ports of the first pump pool 10, the second pump pool 11, and the third pump pool 13 are respectively provided with a water inlet pipeline 15, and the water inlet pipeline 15 is provided with a valve 16.
In order to conveniently add water to adjust the concentration of the mixture in the pump pools, a water inlet pipeline 15 is arranged at the feed inlet of each pump pool; in order to control the water inflow conveniently, a valve 16 is arranged on the water inlet pipeline 15.
Example 3
In order to further optimize the technical solution in embodiment 1, the wet sieve classification device 1 in this embodiment is a cyclone or a sieve bend.
Example 4
In order to further optimize the technical solution of the embodiment 1, the re-classifying device 2 in this embodiment is a cyclone or a spiral classifier.
Example 5
In order to further optimize the technical solution in embodiment 1, the first-stage classification device 5 and the second-stage classification device 7 in this embodiment are cyclones.
Example 6
In order to further optimize the technical scheme in the embodiment 1, the first-stage mill 4 and the second-stage mill 6 in the embodiment are ball mills.
While the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this invention. More particularly, various variations and modifications are possible in the component parts and/or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (6)

1. The collophanite pre-grading, ore grinding and grading and separate flotation combined process system is characterized in that: is formed by sequentially connecting wet sieve classification equipment (1), secondary classification equipment (2), a first flotation machine (3), a first section grinding machine (4), first section classification equipment (5), a second section grinding machine (6), second section classification equipment (7) and a second flotation machine (8) through pipelines,
a feed port of the wet sieve classification equipment (1) is used for raw ore to enter, a fine grain material port of the wet sieve classification equipment (1) is connected with a feed port of a first pump pool (9), a discharge port of the first pump pool (9) is connected with one end of a first sand pump (10) through a pipeline, the other end of the first sand pump (10) is connected with a feed port of a secondary classification equipment (2) through a pipeline, a fine grain material port of the secondary classification equipment (2) is connected with a feed port of a first flotation machine (3) through a pipeline, and a discharge port of the first flotation machine (3) is connected with concentrate storage equipment and tailing storage equipment; the coarse particle material port of the secondary grading equipment (2) is connected with the feeding port of the secondary grinding machine (6) through a pipeline;
the coarse grain material port of the wet sieve classification equipment (1) is connected with the material inlet of the first-stage grinding machine (4), the material outlet of the first-stage grinding machine (4) is connected with the material inlet of a second pump pool (11), the material outlet of the second pump pool (11) is connected with one end of a second sand pump (12) through a pipeline, the other end of the second sand pump (12) is connected with the material inlet of the first-stage classification equipment (5) through a pipeline, and the coarse grain material port of the first-stage classification equipment (5) is connected with the material inlet of the first-stage grinding machine (4) through a pipeline;
the fine grain material port of the first-stage grading equipment (5) is connected with the feed port of a third pump pool (13) through a pipeline, the discharge port of the third pump pool (13) is connected with one end of a third sand pump (14) through a pipeline, the other end of the third sand pump (14) is connected with the feed port of a second-stage grading equipment (7) through a pipeline, the coarse grain material port of the second-stage grading equipment (7) is connected with the feed port of a second-stage grinding machine (6) through a pipeline, and the discharge port of the second-stage grinding machine (6) is connected with the feed port of the third pump pool (13; the fine grain material port of the second-stage grading equipment (7) is connected with the material inlet of the second flotation machine (8) through a pipeline, and the material outlet of the second flotation machine (8) is connected with concentrate storage equipment and tailing storage equipment.
2. The system of the combined process of collophanite pre-classification, ore grinding classification and separate flotation according to claim 1 is characterized in that: the feeding ports of the first pump pool (9), the second pump pool (11) and the third pump pool (13) are respectively provided with a water inlet pipeline (15), and the water inlet pipeline (15) is provided with a valve (16).
3. The system of the combined process of collophanite pre-classification, ore grinding classification and separate flotation according to claim 1 is characterized in that: the wet sieve grading equipment (1) is a cyclone or a curved sieve.
4. The system of the combined process of collophanite pre-classification, ore grinding classification and separate flotation according to claim 1 is characterized in that: the secondary classifying equipment (2) is a cyclone or a spiral classifier.
5. The system of the combined process of collophanite pre-classification, ore grinding classification and separate flotation according to claim 1 is characterized in that: the first-stage grading equipment (5) and the second-stage grading equipment (7) are cyclones.
6. The system of the combined process of collophanite pre-classification, ore grinding classification and separate flotation according to claim 1 is characterized in that: the first-stage grinding machine (4) and the second-stage grinding machine (6) are ball mills.
CN201921100244.1U 2019-07-15 2019-07-15 System for collophanite pre-grading, ore grinding grading and separate flotation combined process Active CN210207202U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110339939A (en) * 2019-07-15 2019-10-18 云南磷化集团有限公司 Collophane pre-classification, grind grading, respectively joint flotation technology and its system
CN112619885A (en) * 2020-12-25 2021-04-09 贵州川恒化工股份有限公司 Beneficiation method for magnesium-containing high-silicon calcium collophanite

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110339939A (en) * 2019-07-15 2019-10-18 云南磷化集团有限公司 Collophane pre-classification, grind grading, respectively joint flotation technology and its system
CN110339939B (en) * 2019-07-15 2021-04-16 云南磷化集团有限公司 Combined process and system for pre-grading, grinding and grading and respectively floating collophanite
CN112619885A (en) * 2020-12-25 2021-04-09 贵州川恒化工股份有限公司 Beneficiation method for magnesium-containing high-silicon calcium collophanite
CN112619885B (en) * 2020-12-25 2022-10-11 贵州川恒化工股份有限公司 Beneficiation method for magnesium-containing high-silicon calcium collophanite

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