CN101658814B - Enter-type closed-circuit grinding system in returning powder - Google Patents
Enter-type closed-circuit grinding system in returning powder Download PDFInfo
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- CN101658814B CN101658814B CN2009101762694A CN200910176269A CN101658814B CN 101658814 B CN101658814 B CN 101658814B CN 2009101762694 A CN2009101762694 A CN 2009101762694A CN 200910176269 A CN200910176269 A CN 200910176269A CN 101658814 B CN101658814 B CN 101658814B
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Abstract
The invention discloses an enter-type closed-circuit grinding system in returning powder, belonging to the technical field of powder engineering. The system comprises a tube mill, a powder concentrator and a powder returning storehouse; the tube mill comprises a grinding head feeding mouth, a grinding powder returning inlet, a spiral feed spoon, a grinding mill cylinder, a coarse grinding storehouse, a double-layer storehouse separating board, a fine grinding storehouse and a hinged support valve; in the technology, a group of grinding powder returning inlets with hinged support valves are distributed in the radial direction in the double-layer storehouse separating board to ensure that the grinding process conforms to the requirements of a milling mechanism that big balls grind coarse and small balls grind fines, and the group of grinding powder returning inlets are connected with a group of spiral feed spoons rotating with the grinding mill cylinder body; a feed spoon powder returning storehouse wraps the periphery of the spiral feed spoon, and receives returning powder sorted by the powder concentrator; the feed spoon extracts and receives the returning powder of the powder returning storehouse; the returning powder is placed into the fine grinding storehouse for fine grinding to realize closed circuit grinding between the grinding mill fine grinding storehouse and the powder concentrator. The invention is applicable to the closed-circuit grinding system to prepare powdery materials, improves grinding probability and effect of the grinding coarse in initial coarse grinding storehouse, gives full play to the grinding function of a small grinding body of the fine grinding storehouse on fines, and reduces grinding energy consumption.
Description
Technical field
The invention belongs to technical field of powder engineering, be applied to closed-circuit grinding system and prepare granular material.
Background technology
The closed-circuit grinding system of existing technology is as shown in Figure 4: the material for the treatment of grinding is through bistrique spout B21; Enter corase grind storehouse B22, roughly ground big abrasive body impact grinding in the storehouse in after, enter fine grinding storehouse B24 through partition panel B23, be subjected in the fine grinding storehouse to enter powder concentrator B25 classification processing behind the less abrasive body abrasive action, qualified fine powder is discharged from fine powder mouth B27; Underproof coarse fodder is slightly discharged from returning powder mouth B26, enters bistrique spout B with initial mill feed material, forms closed-circuit grinding system.Because of roughly grinding storehouse abrasive body diameter usually greater than 60mm, and powder concentrator returns powder usually less than 1mm, and this time powder compares generally 60%～150% with the heavy burder of initially going into abrasive material, so this time powder enters the corase grind storehouse and not only can not effectively pulverize, and because the backing strap effect, influence increases energy loss to the pulverizing of initial mill feed material.
Summary of the invention
The object of the invention is to provide a kind of enter-type closed-circuit grinding system in the powder that returns that can overcome above-mentioned defective, the powder that returns after the powder concentrator classification enters grinding machine fine grinding storehouse from the double-layered isolating plate in the middle part of the tube mill, improve and just cheat, reduce the grinding energy consumption into the impact comminution probability and the effect of mill coarse fodder in the corase grind storehouse.
The technical solution adopted in the present invention is:
Return that enter-type closed-circuit grinding system contains tube mill, powder concentrator, Hui Fencang etc. in the powder, tube mill contains in bistrique spout, the mill and returns powder inlet, spirality scoop, grinding mill barrel, corase grind storehouse, double-layered isolating plate, fine grinding storehouse, hinged valve; Return the powder inlet in the mill of the corase grind storehouse of tube mill and the one group of hinged valve of band of double-layered isolating plate place radial equipartition between the fine grinding storehouse, valve is hinged in returning the powder inlet in gyratory directions hysteresis side, when time powder inlet is positioned at cylindrical shell revolution upper half, hinged valve is opened under the gravity effect automatically, so that charging, hinged valve is closed under the gravity effect during lower half, and material backflows in can avoiding grinding; Return the powder inlet in each mill and be rigidly connected with a spirality scoop root flange, the helical duct medial support of scoop can be turned round with grinding mill barrel on the fagging of grinding mill barrel; One group of scoop bore is to uniform, scoop mouth outer rim is on same circumference, scoop encloses greater than 1.25 around the spiral road of cylindrical shell number average, to guarantee that lock scenery material is all arranged in the rotating any moment scoop of grinding machine, when scoop turns round with cylindrical shell, take and accept to select and enter the powder that returns of Hui Fencang, in the spirality channel of scoop, mill, return the powder inlet and enter grinding machine fine grinding storehouse through powder concentrator.Hui Fencang is included in rotating spirality scoop periphery, with the hoop adjoiner of grinding mill barrel end face seal is set, the receiving opening of Hui Fencang is opened in the upper half of meeting spirality scoop mouth gyratory directions one side, when material feeding, can make more material directly enter scoop, reduce scoop and take resistance, the receiving opening of Hui Fencang returns the powder mouth with powder concentrator and is connected, and accepts back powder.
System is work like this:
The material for the treatment of grinding enters the corase grind storehouse through the bistrique spout, roughly ground greatly the abrasive body impact grinding in the storehouse in after, enter the fine grinding storehouse through partition panel, be subjected to after less abrasive body grinds in the fine grinding storehouse, discharge from mill tail discharging opening, enter the powder concentrator classification and handle, qualified fine powder is discharged from the fine powder mouth; Underproof coarse fodder is slightly discharged from returning the powder mouth, enter the receiving opening of Hui Fencang, most of material directly imports the scoop mouth. and some material falls at the bottom of the Hui Fencang, taken by follow-up rotating scoop, in the helical duct of scoop, mill, return powder inlet, partition panel, enter the fine grinding of fine grinding storehouse, form the closed-circuit grinding technology of fine grinding storehouse and powder concentrator.
The invention has the beneficial effects as follows:
1. account for the powder concentrator of initially going into mill amount 60%～150% and return powder and directly enter the fine grinding storehouse, give full play to the abrasive action of the little abrasive body in fine grinding storehouse fines;
2 have significantly improved the impact grinding probability of coarse fodder in the corase grind storehouse, have reduced the backing strap effect of thin material, improve the impact particle efficiency of the big abrasive body in corase grind storehouse;
Above-mentioned two comprehensive effect is: implement the broken coarse fodder of big ball on disintegrating process, the division of labor of the levigate material of bead meets the crushing mechanism requirement, can significantly reduce the grinding energy consumption.
Description of drawings
Now further specify in conjunction with diagram and embodiment:
Fig. 1 is a fundamental diagram of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the I partial enlarged drawing of Fig. 2;
Fig. 4 is the closed circuit mill general flow chart of existing technology.
Among the figure: 1-bistrique spout; 2-roughly grinds the storehouse; The 3-end face seal; 4-goes back to the powder storehouse; 5-spirality scoop; 6-returns the powder mouth; The 7-powder concentrator; The 8-charging aperture; 9-fine powder mouth; Return the powder inlet in the 10-mill; The 11-grinding mill barrel; The 12-double-layered isolating plate; The hinged valve of 13-; 14-fine grinding storehouse; 16-returns powder storehouse receiving opening; The 17-fagging; The 18-bolt connection piece; The hinged door-hinge of 19-; 21-bistrique spout B; 22-roughly grinds storehouse B; 23-partition panel B; 24-fine grinding storehouse B; 25-powder concentrator B; 26-returns powder mouth B; 27-fine powder mouth B
The specific embodiment
The material for the treatment of grinding enters corase grind storehouse 2 through bistrique spout 1, after being roughly ground the impact grinding of big abrasive body in the storehouse, enter fine grinding storehouse 14 through double-layered isolating plate 12, after being subjected to the grinding of less abrasive body in the fine grinding storehouse, discharge from mill tail discharging opening 15, enter the charging aperture 8 of powder concentrator 7, carry out classification and handle, qualified fine powder is discharged from fine powder mouth 9; Underproof coarse fodder is slightly discharged from returning powder mouth 6, enters back the receiving opening 16 in powder storehouse 4, and Hui Fencang is included in the periphery of spirality scoop 5, with the hoop adjoiner of grinding mill barrel end face seal 3 is set; One group of spirality scoop is supported on the fagging 17 of grinding mill barrel 11, the root flange of each spirality scoop and radial equipartition return powder inlet 10 in the mill on the cylindrical shell between partition panel flange is fastenedly connected with bolt connection piece 18, return the powder inlet in the mill in gyratory directions hysteresis side, hang a hinged valve 13, hinged valve can freely rotate around hinged door-hinge 19, when time powder inlet is positioned at cylindrical shell revolution upper half, hinged valve is opened under the gravity effect automatically, so that charging, hinged valve is closed under the gravity effect during lower half, and material backflows in can avoiding grinding.When the spirality scoop turns round with grinding mill barrel, most of material imports spirality scoop mouth, some material falls at the bottom of the Hui Fencang, taken by follow-up rotating scoop, in the helical duct of scoop self, mill, return powder inlet 10, double-layered isolating plate 12, enter 14 fine grindings of fine grinding storehouse, form the closed-circuit grinding system of fine grinding storehouse and powder concentrator.
Claims (2)
1. one kind is returned enter-type closed-circuit grinding system in the powder, contain tube mill, powder concentrator, Hui Fencang, tube mill contains the bistrique spout, return the powder inlet in the mill, the spirality scoop, grinding mill barrel, the corase grind storehouse, double-layered isolating plate, the fine grinding storehouse, hinged valve, it is characterized in that: return the powder inlet in the mill of the corase grind storehouse of tube mill and the one group of hinged valve of band of double-layered isolating plate place radial equipartition between the fine grinding storehouse, valve is hinged in returning the powder inlet in gyratory directions hysteresis side, returning the powder inlet in each mill is rigidly connected with a spirality scoop root flange, the helical duct medial support of scoop is on the fagging of grinding mill barrel, one group of scoop bore is to uniform, scoop mouth outer rim is on same circumference, and scoop encloses greater than 1.25 around the spiral road of cylindrical shell number average.
2. enter-type closed-circuit grinding system in time powder according to claim 1, it is characterized in that: Hui Fencang is included in rotating spirality scoop periphery, with the hoop adjoiner of grinding mill barrel end face seal is set, the receiving opening of Hui Fencang is opened in the upper half of meeting spirality scoop mouth gyratory directions one side, and the receiving opening of Hui Fencang returns the powder mouth with powder concentrator and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101762694A CN101658814B (en) | 2009-09-10 | 2009-09-10 | Enter-type closed-circuit grinding system in returning powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101762694A CN101658814B (en) | 2009-09-10 | 2009-09-10 | Enter-type closed-circuit grinding system in returning powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101658814A CN101658814A (en) | 2010-03-03 |
| CN101658814B true CN101658814B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101762694A Expired - Fee Related CN101658814B (en) | 2009-09-10 | 2009-09-10 | Enter-type closed-circuit grinding system in returning powder |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111318339B (en) * | 2020-04-03 | 2024-06-21 | 江苏鹏飞集团股份有限公司 | Grinding system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3848815A (en) * | 1972-05-17 | 1974-11-19 | Carborundum Co | Granulating apparatus |
| US4726531A (en) * | 1985-02-23 | 1988-02-23 | Klockner-Humboldt-Deutz Aktiengesellschaft | Mechanism for the comminution of grinding of brittle grinding stock |
| EP1391252A1 (en) * | 2002-08-22 | 2004-02-25 | Hemlock Semiconductor Corporation | Method and apparatus for improving silicon processing efficiency |
| CN101596483A (en) * | 2009-06-26 | 2009-12-09 | 南京凯盛水泥技术工程有限公司 | A kind of material grinding system |
-
2009
- 2009-09-10 CN CN2009101762694A patent/CN101658814B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3848815A (en) * | 1972-05-17 | 1974-11-19 | Carborundum Co | Granulating apparatus |
| US4726531A (en) * | 1985-02-23 | 1988-02-23 | Klockner-Humboldt-Deutz Aktiengesellschaft | Mechanism for the comminution of grinding of brittle grinding stock |
| EP1391252A1 (en) * | 2002-08-22 | 2004-02-25 | Hemlock Semiconductor Corporation | Method and apparatus for improving silicon processing efficiency |
| CN101596483A (en) * | 2009-06-26 | 2009-12-09 | 南京凯盛水泥技术工程有限公司 | A kind of material grinding system |
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| Publication number | Publication date |
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| CN101658814A (en) | 2010-03-03 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Hengyuan International Engineering Co., Ltd. Assignor: Ni Wenlong Contract record no.: 2012320000186 Denomination of invention: Enter-type closed-circuit grinding system in returning powder Granted publication date: 20110420 License type: Exclusive License Open date: 20100303 Record date: 20120309 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20160910 |