CN115231190B - Homogenization feeding method for dry grinding dry separator - Google Patents
Homogenization feeding method for dry grinding dry separator Download PDFInfo
- Publication number
- CN115231190B CN115231190B CN202210990955.0A CN202210990955A CN115231190B CN 115231190 B CN115231190 B CN 115231190B CN 202210990955 A CN202210990955 A CN 202210990955A CN 115231190 B CN115231190 B CN 115231190B
- Authority
- CN
- China
- Prior art keywords
- belt conveyor
- dry
- dry separation
- distributor
- guide strips
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009837 dry grinding Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000000265 homogenisation Methods 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 77
- 238000000926 separation method Methods 0.000 claims abstract description 54
- 238000007664 blowing Methods 0.000 claims abstract description 46
- 238000007790 scraping Methods 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 31
- 239000000696 magnetic material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G11/00—Chutes
- B65G11/20—Auxiliary devices, e.g. for deflecting, controlling speed of, or agitating articles or solids
- B65G11/206—Auxiliary devices, e.g. for deflecting, controlling speed of, or agitating articles or solids for bulk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/04—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials
- B65G69/0416—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials with scraping belts or chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a homogenizing feeding method for a dry grinding dry separator, which comprises a small belt conveyor, a distributor, a dry separation belt conveyor, a scraping device and a blowing pipe along the material conveying direction; the distributor is obliquely arranged between the small belt conveyor and the dry separation belt conveyor and is used for conveying materials from the small belt conveyor to the dry separation belt conveyor; the distributor comprises a rectangular groove-shaped receiving plate, the guide strips are rectangular long strips and comprise a plurality of guide strips, the guide strips are radially fixed on the receiving plate, the guide strips are gathered at the position close to the small belt conveyor, the position close to the dry separation belt conveyor is in open packaging, and the width of an opening at one end of each guide strip is equal to the length of a blowing opening of the blowing pipe; the scraping device is positioned above the dry separation belt conveyor and used for scraping materials on the dry separation belt conveyor; the blowing pipe is arranged at the outlet end of the dry separation belt conveyor, one end of the blowing pipe is a plug, the other end of the blowing pipe is an end head, and the end head is connected with an outlet pipe of the air dividing bag.
Description
Technical Field
The invention belongs to the technical field of mineral separation engineering, and particularly relates to a homogenizing feeding method for a dry grinding and dry separating machine. In particular to a feeding method and a homogenizing feeding device for powder materials which are required to enter a machine core of a dry separation machine to be arranged on a dry separation belt conveyor according to requirements during dry separation of the materials.
Background
The working process of the dry grinding dry separation equipment comprises the following steps: the magnetic material is unloaded into a raw ore bin, falls onto a raw ore metering belt scale through a star-shaped discharge valve, is fed into a hopper type elevator to be fed into a Raymond mill hopper, enters a Raymond mill system through an electromagnetic vibration feeder to be subjected to dry grinding, and after dry grinding, powder ore with proper granularity is loaded into the powder ore bin and then is fed into a dry separation belt conveyor system through a small belt conveyor.
When the magnetic powdery material moves horizontally along with the dry separation belt conveyor rubber conveyer belt to the 'zero field intensity' area of the magnetic field, air with the air speed of 30-40m/s is blown to the surface of the material through a blowing pipe arranged on the machine core, part of non-magnetic particles mixed in the magnetic agglomerated material are blown out of the material surface and are taken away along with the air flow and then are collected through a collecting cover. Then the material continuously moves along with the belt to enter the magnetic field area of the second group of magnets, and the materials are carefully selected again; the magnetic materials in the magnetic materials can be enriched step by step through multiple times of wind-magnetic combined separation, and concentrate is produced. Air blown into the material layer by the blowing pipe overflows the material layer and carries a large amount of fine granular materials, and most of fluidized fine particles are mutually adsorbed to form coarse-grained magnetic materials in the process of flowing through the grid along with the air, sink and are bound by the magnetic system again; the positive pressure gas-solid two-phase flow discharged from the grating enters a negative pressure area, flows through a cloth bag collector, collects tailing powder, and discharges clean air after being pressurized by an exhaust fan.
The set of dry grinding and dry separation equipment can be used for separating different kinds of iron-containing minerals such as natural magnetite, magnetized roasting ore, blast furnace gas ash, fly ash of a thermal power plant, metallized materials and the like. At present, the dry-grinding dry-separation machine has the following problems when performing dry-separation operation: the powder material layer entering the machine core of the dry separator deviates from the center line of the blowing opening of the blowing pipe of the machine core, the width of the powder material layer is inconsistent with the widths of the blowing openings of the machine core and the blowing pipe, and the thickness of the material surface has fluctuation. After the material enters the machine core of the dry separator, the blowing pipe fixed on the machine core blows uniform air, the powder material layer deviates to a certain extent in the blowing area in the machine core, and the thickness of the material surface is uneven, so that the powder material is uniformly blown away and correctly sorted to a certain extent.
Disclosure of Invention
The invention provides a homogenizing feeding method for a dry grinding and dry separation machine, and aims to solve the technical problems.
Therefore, the invention adopts the following technical scheme:
a homogenized feed method for a dry-grinding dry-separator, comprising the steps of:
1) The blowing pipe is arranged on the movement of the dry separator, and the center point of a blowing opening of the blowing pipe is arranged on the centering surface of the movement;
2) The adjusting mechanism of the scraping device is fixed on the dry separation belt conveyor frame, and the scraping plate of the scraping device is arranged on the adjusting mechanism; when the scraper is installed, the horizontal installation of the scraper rotating shaft is ensured, and the centering surface of the scraper coincides with the centering surface of the movement; the scraping device is positioned above the dry separation belt conveyor and used for scraping materials on the dry separation belt conveyor; the scraping device comprises a scraping plate, a scraper and an adjusting mechanism; the scraper is vertically connected to the scraper, and the connection height of the scraper on the scraper is adjustable;
3) The distributor is fixed on a platform between the small belt conveyor and the dry separation belt conveyor, and the center surface of the distributor is arranged on the centering surface of the movement; the height of the distributor is adjustable, the inclination angle of the distributor is adjustable, and the distance between the distributor and the movement is adjustable; the distributor comprises a rectangular trough-shaped receiving plate, the upper end of the receiving plate is connected with the outlet end of the small belt conveyor, and the lower end of the receiving plate is connected with the inlet of the dry separation belt conveyor; the guide strips are rectangular strips and comprise a plurality of guide strips, the guide strips are radially fixed on the receiving plate, the guide strips are gathered at the position close to the small belt conveyor, the position close to the dry separation belt conveyor is open, and the width of the opening at one end of each guide strip is equal to the length of the blowing opening of the blowing pipe.
Further, limiting plates are further arranged at the left end and the right end of the material receiving plate, and the height of each limiting plate is higher than that of each guide strip.
Further, the guide strips are close to one end of the small belt conveyor, the extension length of the outer guide strips is longer, the extension length of the inner guide strips is shorter, and the head ends of the guide strips are distributed in a U shape.
The invention has the beneficial effects that:
1. in the homogenizing feeding device, a plurality of guide strips are arranged below a material receiving plate of a distributor under the impact of materials. The diversion strips distribute a part of the material which is originally directly and vertically dropped down to two sides near the central position of the material impact area, and the intercepted material slides down obliquely along the diversion plates and falls on a conveyor belt of the dry separation belt conveyor, so that the width expansion of a material layer is realized;
2. the width of the distributor is equal to the width of the air blowing opening of the air blowing pipe on the machine core of the dry separator, and the width of the material layer is limited by the limiting plate to be not more than the width of the air blowing opening of the air blowing pipe on the machine core of the dry separator;
3. the invention can ensure that the width of the powder material layer entering the dry separator is centered with the width of the machine core of the dry separator, and the width of the powder material layer is equal to the width of the blowing opening of the blowing pipe of the machine core of the dry separator;
4. the invention can ensure that the powder material layer entering the dry separator is equal to the set value;
5. the invention can realize the best effect of uniformly blowing the magnetic powder materials in the core of the dry separator, thereby improving the sorting effect of the magnetic powder materials.
Drawings
FIG. 1 is a front view of a blowpipe of the present invention;
FIG. 2 is a schematic view of the construction of the blowpipe of the present invention;
FIG. 3 is a front view of the receiving plate of the present invention;
FIG. 4 is a schematic view of the structure of the receiving plate of the present invention;
FIG. 5 is a schematic view of the scraping device of the present invention;
FIG. 6 is a front elevational view of the structure of the present invention;
FIG. 7 is a schematic view of the structure of the present invention;
in the figure: 1-a blowpipe; 2-blowing an air port; 3-movement; 4-plugs; 5-a distributor; 6, a receiving plate; 7, a flow guiding strip; 8-limiting plates; 9-scraping device; 10-scraping plates; 11-scraping knife; 12-an adjusting mechanism; 13-a small belt conveyor; 14-dry separation belt conveyor.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 6 and 7, a homogenizing feeding method for a dry-grinding dry-separation machine comprises a small belt conveyor 13, a distributor 5, a dry-separation belt conveyor 14, a scraping device 9 and a blowing pipe 1 along a material conveying direction.
The small belt conveyor 13 and the dry separation belt conveyor 14 are horizontally arranged, the small belt conveyor 13 is located above the dry separation belt conveyor 14, and the distributor 5 is obliquely arranged between the small belt conveyor 13 and the dry separation belt conveyor 14 and used for conveying materials from the small belt conveyor 13 to the dry separation belt conveyor.
As shown in fig. 3 and 4, the distributor 5 comprises a rectangular groove-shaped receiving plate 6, wherein the upper end of the receiving plate 6 is connected with the outlet end of the small belt conveyor 13, and the lower end of the receiving plate is connected with the inlet of the dry separation belt conveyor 14. The guide strips 7 are rectangular strips and comprise a plurality of guide strips 7 which are radially fixed on the receiving plate 6, the guide strips 7 are gathered close to the small belt conveyor 13, the guide strips are open close to the dry separation belt conveyor 14, and the width of the opening at one end of the guide strips 7 is equal to the length of the air blowing opening 2 of the blowing pipe 1. Limiting plates 8 are further arranged at the left end and the right end of the receiving plate 6, and the height of the limiting plates 8 is higher than that of the guide strips 7. The guide strip 7 is close to one end of the small belt conveyor 13, the extension length of the outer guide strip 7 is longer, the extension length of the inner guide strip 7 is shorter, the head ends of the guide strips 7 are distributed in a U shape, and materials can conveniently enter the guide strip 7 and are dispersed. After the powder material impacts the receiving plate 6 of the distributor 5, the material spreads out around, but vertically descends under the action of gravity, and the material is generally piled up to be thick below the center point of the material impact, namely, the middle of the material layer on the rubber conveying belt of the dry separation belt conveyor 14 is thick, and the two sides of the material layer are thin. In the invention, a plurality of guide strips 7 are arranged below the area of the receiving plate 6 of the distributor 5, which is impacted by materials. The function of the guide strip 7 is to distribute a part of the intercepted material which originally directly falls down vertically beside the central position of the material impact area to the side, and the intercepted material slides down obliquely along the guide plate to fall on the conveying belt of the dry separation belt conveyor 14, so that the width expansion of the material layer is realized. The distance between the limiting plates 8 is equal to the width of the air blowing opening 2 of the air blowing pipe 1 on the dry separator movement 3, and when the blanking amount is large, the limiting plates 8 restrict the width of the material layer not to exceed the width of the air blowing opening 2 of the air blowing pipe 1 on the dry separator movement 3.
As shown in fig. 5, the scraping device 9 is located above the dry separation belt conveyor 14 and is used for scraping materials on the dry separation belt conveyor 14; the scraping device 9 comprises a scraping plate 10, a scraping knife 11 and an adjusting mechanism 12; the adjusting mechanism 12 is fixed on the frame, the scraping plate 10 is horizontally arranged on the adjusting mechanism 12, the scraping knife 11 is vertically connected to the scraping plate 10, and the connection height of the scraping knife 11 on the scraping plate 10 is adjustable;
as shown in fig. 1 and 2, the blowing pipe 1 is arranged at the outlet end of the dry separation belt conveyor 14, one end of the blowing pipe 1 is a plug 4, the other end is a tip, and the tip is connected with an outlet pipe of the air dividing bag.
The working principle of the invention is as follows:
after the powder materials with qualified granularity ground by the dry grinding system are stored in a powder ore bin, a star discharger arranged at a discharging opening of the powder ore bin starts to rotate, the powder materials are discharged through the star discharger and fall on a small belt conveyor 13 rubber conveyer belt below the star discharger, and the small belt conveyor 13 rubber conveyer belt bears the powder materials to advance towards a small belt conveyor 13 head wheel and a distributor 5 in front of the small belt conveyor 13 head wheel.
When the powder material moves to the head wheel position of the small belt conveyor 13 along with the rubber conveyer belt of the small belt conveyor 13, the powder material leaves the rubber conveyer belt of the small belt conveyor 13 and is flushed into the distributor 5. The guide strips 7 on the distributor 5 distribute the powder materials, limit the width of the material layer formed after the powder materials fall down, and enable the powder materials to be uniformly distributed along the width direction of the dry separation belt; the powder material falls on the rubber conveyer belt of the dry separation belt conveyor 14 after passing through the distributor 5, the width of the material layer is centered with the width of the dry separation machine core 3, and the width of the powder material layer is equal to the width of the air blowing opening 2 of the blowing pipe 1 of the dry separation machine core 3.
The powder material falling on the dry separation belt conveyor 14 is carried by the dry separation belt and moves towards the dry separation machine core 3, but the material level of the material layers may be inconsistent. A scraping plate 10 device is arranged between the distributor 5 and the dry separator movement 3, and the scraping plate 10 device scrapes the material surface. Thus, the powder material level entering the dry separator core 3 has the same height, and the width of the powder material layer corresponds to the width of the dry separator core 3 and is centered. The distributor 5 consists of a receiving plate 6, a guide strip 7 and a limiting plate 8. The scraping device 9 consists of a scraping plate 10 and an adjusting mechanism 12, wherein the scraping plate 10 is arranged on the adjusting mechanism 12, and the height and the scraping angle of the scraping plate 10 can be adjusted. The material layer width before the powder material enters the dry separator core 3 is centered with the air blowing port 2 of the air blowing pipe 1 of the dry separator core 3, the width of the powder material is the same as the width of the air blowing port 2, and the material layer is kept to be uniformly the same thickness and the same as a set value, so that the powder material is uniformly distributed before entering the dry separator core 3, the powder material is optimally acted by wind force and magnetic force after entering the core 3, and the dry separation effect is improved.
Claims (1)
1. A homogenized feed method for a dry separator for dry grinding, comprising the steps of:
1) The blowing pipe is arranged on the movement of the dry separator, and the center point of a blowing opening of the blowing pipe is arranged on the centering surface of the movement;
2) The adjusting mechanism of the scraping device is fixed on the dry separation belt conveyor frame, and the scraping plate of the scraping device is arranged on the adjusting mechanism; when the scraper is installed, the horizontal installation of the scraper rotating shaft is ensured, and the centering surface of the scraper coincides with the centering surface of the movement; the scraping device is positioned above the dry separation belt conveyor and used for scraping materials on the dry separation belt conveyor; the scraping device comprises a scraping plate, a scraper and an adjusting mechanism; the scraper is vertically connected to the scraper, and the connection height of the scraper on the scraper is adjustable;
3) The distributor is fixed on a platform between the small belt conveyor and the dry separation belt conveyor, and the center surface of the distributor is arranged on the centering surface of the movement; the height of the distributor is adjustable, the inclination angle of the distributor is adjustable, and the distance between the distributor and the movement is adjustable; the distributor comprises a rectangular trough-shaped receiving plate, the upper end of the receiving plate is connected with the outlet end of the small belt conveyor, and the lower end of the receiving plate is connected with the inlet of the dry separation belt conveyor; the guide strips are rectangular long strips and comprise a plurality of guide strips, the guide strips are radially fixed on the receiving plate, the guide strips are gathered at the position close to the small belt conveyor, the position close to the dry separation belt conveyor is open, and the width of the opening at one end of each guide strip is equal to the length of a blowing opening of the blowing pipe; limiting plates are arranged at the left end and the right end of the material receiving plate, and the height of each limiting plate is higher than that of each guide strip; the guide strips are close to one end of the small belt conveyor, the extension length of the outer guide strips is longer, the extension length of the inner guide strips is shorter, and the head ends of the guide strips are distributed in a U shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990955.0A CN115231190B (en) | 2022-08-18 | 2022-08-18 | Homogenization feeding method for dry grinding dry separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990955.0A CN115231190B (en) | 2022-08-18 | 2022-08-18 | Homogenization feeding method for dry grinding dry separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115231190A CN115231190A (en) | 2022-10-25 |
| CN115231190B true CN115231190B (en) | 2024-03-08 |
Family
ID=83679067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210990955.0A Active CN115231190B (en) | 2022-08-18 | 2022-08-18 | Homogenization feeding method for dry grinding dry separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115231190B (en) |
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| CN216026230U (en) * | 2021-07-20 | 2022-03-15 | 酒泉钢铁(集团)有限责任公司 | A removable high stability jetting device for dry grinding dry separation machine |
| CN114798168A (en) * | 2022-04-26 | 2022-07-29 | 酒泉钢铁(集团)有限责任公司 | Separation system for iron ore wind-magnetic synchronous combined separation unit |
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2022
- 2022-08-18 CN CN202210990955.0A patent/CN115231190B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115231190A (en) | 2022-10-25 |
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