CN101716548B - Grinding system used for extracting vanadium from stone coal - Google Patents

Grinding system used for extracting vanadium from stone coal Download PDF

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Publication number
CN101716548B
CN101716548B CN200910273346A CN200910273346A CN101716548B CN 101716548 B CN101716548 B CN 101716548B CN 200910273346 A CN200910273346 A CN 200910273346A CN 200910273346 A CN200910273346 A CN 200910273346A CN 101716548 B CN101716548 B CN 101716548B
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vertical mill
grinding
way pipe
pipeline
combustion furnace
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CN101716548A (en
Inventor
刘涛
张一敏
吴世洲
黄晶
陈铁军
包申旭
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Yunxi ordinary Mining Co., Ltd.
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Wuhan University of Science and Engineering WUSE
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Abstract

The invention is particularly relates to a grinding system used for extracting vanadium from stone coal. The grinding system comprises a vertical mill (5), a combustion furnace (1) and a bag-type dust collector (11); an air inlet (4) of the vertical mill (5) is communicated with a flue gas outlet (15) of the combustion furnace (1) through a first air valve (3), a first three-way pipe (2) and a pipeline; a material-air exhaust port (7) of the vertical mill (5) is communicated with an airflow inlet (10) of the bag-type dust collector (11) through the pipeline, a third air valve (8) and a second three-way pipe (9); and the first three-way pip (2) is communicated with the second three-way pipe (9) through a second air valve (14) and the pipeline. By importing hot waste gas of the combustion furnace (1) into the vertical mill (5) and the bag-type dust collector (11), the invention improves grinding efficiency and dedusting efficiency and enables waste heat use ratio of the hot water gas to be more than 85 percent; and moreover, by conveying fine grinded particles and dust in the flue gas to the bag-type dust collector (11), fine fraction grinded products can be effectively recovered, and simultaneously dedusting the hot waste gas and exhausted gas from the vertical mill (5).

Description

A kind of grinding system that is used for extracting vanadium from stone coal
Technical field
The invention belongs to the grinding device technical field.Relate in particular to a kind of grinding system that is used for extracting vanadium from stone coal.
Background technology
The vertical mill that is used for grinding is through the relative motion between mill and the grinding roller material to be rolled continuously to reach the grinding attachment that grinds effect; Fine size, the even particle size distribution of the low and levigate product of its power consumption have been widely used in the grinding operation of brittle materials such as cement, bone coal.When handling moist raw material; Vertical mill must be used with hot-blast stove; The hot gas that utilizes hot-blast stove to produce is dried moist raw material in ore grinding, can realize to moist raw material effectively levigate (Bao Yonggang. brief talk the application of roller mill in raw grinding. Shandong building materials, 2005 (1)).
The extracting vanadium from stone coal scene is except that adopting vertical mill to carry out bone coal raw material levigate, the combustion furnace that generally all has pair bone coal to carry out decarburization or roasting, but the hot waste gas that combustion furnace produced all is processed directly discharging of back, can't utilize the heat energy in the hot waste gas.In addition, the fine fraction product that vertical mill itself produces also is difficult to effective recovery, can't reach the requirement of enterprise's cost efficiency.
Summary of the invention
The present invention is intended to overcome the on-the-spot technological deficiency of extracting vanadium from stone coal, and purpose provides the grinding system that is used for extracting vanadium from stone coal that a kind of technology is simple, the heat energy utilization rate of hot waste gas is high, can effectively reclaim the fine fraction product.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: this system is made up of vertical mill, combustion furnace and sack cleaner.The air inlet of vertical mill communicates with the heat outlet of combustion furnace through first air valve, first three-way pipe and pipeline; The discharge gas port of vertical mill communicates with the airflow inlet of sack cleaner through pipeline, the 3rd air valve and second three-way pipe, and first three-way pipe communicates with second three-way pipe through second air valve and pipeline.
Owing to adopt technique scheme, the present invention introduces the hot waste gas of combustion furnace in the vertical mill, makes full use of the waste heat of hot waste gas, and the raw material that gets into vertical mill is carried out dried, has improved grinding efficiency effectively; Particulate that raw material in the vertical mill produces behind grinding and the dust in the hot waste gas all are delivered in the sack cleaner through pipeline through the discharge gas port of vertical mill, can reclaim the fine fraction ore milling product effectively; And the waste heat of hot waste gas also can carry out drying to sack cleaner, avoids the cloth bag of sack cleaner to stop up because of humidity, has improved efficiency of dust collection.So compared with present technology the present invention, has the following advantages:
1, technology is simple, effectively the fine fraction product behind the rate of recovery Vertical Mill;
2, the utilization rate of waste heat of combustion furnace hot waste gas is high, can reach more than 85%;
3, realize dedusting to combustion furnace hot waste gas and vertical mill exhaust simultaneously, efficiency of dust collection is high.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention being done further description, is not the restriction to protection domain:
A kind of grinding system that is used for extracting vanadium from stone coal, this system is as shown in Figure 1, is made up of vertical mill 5, combustion furnace 1 and sack cleaner 11.The air inlet 4 of vertical mill 5 communicates with the heat outlet 15 of combustion furnace 1 through first air valve 3, first three-way pipe 2 and pipeline; The discharge gas port 7 of vertical mill 5 communicates with the airflow inlet 10 of sack cleaner 11 through pipeline, the 3rd air valve 8 and second three-way pipe 9, and first three-way pipe 2 communicates with second three-way pipe 9 with pipeline through second air valve 14.
The running of native system is following: the raw material that needs grinding in the extracting vanadium from stone coal process is by beginning grindings in the charging aperture 6 entering vertical mills 5 of vertical mill 5; The hot waste gas of combustion furnace is got in the vertical mills through pipeline, first three-way pipe 2 and first air valve 3 opened the air inlet 4 through vertical mill 5 by the heat outlet 15 of combustion furnace 1; The fine fraction product that behind grinding, produces is crossed the discharge gas port 7 of vertical mill 5 along pipeline, the 3rd air valve of having opened 8 and the second three-way pipe 9 air inlet 10 entering sack cleaners 11 through sack cleaner 11 with air communication; Fine fraction product behind bag-type dust is discharged by the discharge gate 13 of sack cleaner 11 and is collected, and the air-flow behind bag-type dust is discharged by the air stream outlet 12 of sack cleaner 11.
Present embodiment is introduced vertical mill 5 with the hot waste gas of combustion furnace 1 and is carried out ore grinding, and the waste heat that makes full use of hot waste gas carries out dried to the raw material that gets into vertical mill 5, has improved grinding efficiency effectively; Particulate that behind vertical mill 5 grindings, produces and the dust in the hot waste gas all are delivered in the sack cleaner 11 through pipeline through the discharge gas port 7 of vertical mill 5, can reclaim the fine fraction ore milling product effectively; And the hot waste gas waste heat also can carry out drying to sack cleaner, increases efficiency of dust collection, avoids the cloth bag of sack cleaner to stop up because of humidity.
Present embodiment has following characteristics: technology is simple, and the fine fraction product recovery rate is high, and the utilization rate of waste heat of combustion furnace hot waste gas reaches more than 85%, and to the dedusting of hot waste gas and vertical mill exhaust, efficiency of dust collection is high simultaneously.

Claims (1)

1. a grinding system that is used for extracting vanadium from stone coal is characterized in that this system is made up of vertical mill (5), combustion furnace (1) and sack cleaner (11); The air inlet (4) of vertical mill (5) communicates with the heat outlet (15) of combustion furnace (1) through first air valve (3), first three-way pipe (2) and pipeline; The discharge gas port (7) of vertical mill (5) communicates with the airflow inlet (10) of strap deduster (11) through pipeline, the 3rd air valve (8) and second three-way pipe (9), and first three-way pipe (2) communicates with second three-way pipe (9) through second air valve (14) and pipeline;
The method for using of this system is: the raw material that needs grinding in the extracting vanadium from stone coal process is by beginning grinding in charging aperture (6) the entering vertical mill (5) of vertical mill (5); The hot waste gas of combustion furnace (1) is got in the vertical mill (5) through pipeline, first three-way pipe (2) and first air valve (3) opened the air inlet (4) through vertical mill (5) by the heat outlet (15) of combustion furnace (1); The fine fraction product that produces behind the grinding is crossed the discharge gas port (7) of vertical mill (5) along pipeline, the 3rd air valve of having opened (8) and second three-way pipe (9) air inlet (10) the entering sack cleaner (11) through sack cleaner (11) with air communication; Fine fraction product behind the bag-type dust is discharged by the discharge gate (13) of sack cleaner (11) and is collected, and the air-flow behind the bag-type dust is discharged by the air stream outlet (12) of sack cleaner (11).
CN200910273346A 2009-12-22 2009-12-22 Grinding system used for extracting vanadium from stone coal Active CN101716548B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102062527B (en) * 2010-11-18 2012-09-05 北京科技大学 Decarburization roasting device of vanadium extraction by vanadium containing stone coal and fire, and processing thereof
CN102153299B (en) * 2010-12-22 2012-08-29 浙江工商大学 Vertical pulverizing and drying device
CN103301921B (en) * 2013-05-21 2014-08-20 吴海鸥 Energy-saving and emission-reducing device and method for industrial vertical mill

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009992A (en) * 1973-12-07 1977-03-01 Loesche Hartzerkleinerungs -Und Zementmachinen Kg Installation and method for manufacturing cement
CN1257757A (en) * 1999-12-29 2000-06-28 上海宝钢集团公司 Tail gas recirculation system for coal injection and pulverization of blast furnace and its control method
CN2730461Y (en) * 2004-07-16 2005-10-05 青岛畅隆电力设备有限公司 Preheating apparatus for filtering chamber of bag-type strainer
CN101318642A (en) * 2008-07-04 2008-12-10 湖北三新磷钙有限公司 Process for preparing tricalcium defluorophosphoric acid
CN201579103U (en) * 2009-12-22 2010-09-15 武汉科技大学 Grinding device for vanadium extraction of stone coal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009992A (en) * 1973-12-07 1977-03-01 Loesche Hartzerkleinerungs -Und Zementmachinen Kg Installation and method for manufacturing cement
CN1257757A (en) * 1999-12-29 2000-06-28 上海宝钢集团公司 Tail gas recirculation system for coal injection and pulverization of blast furnace and its control method
CN2730461Y (en) * 2004-07-16 2005-10-05 青岛畅隆电力设备有限公司 Preheating apparatus for filtering chamber of bag-type strainer
CN101318642A (en) * 2008-07-04 2008-12-10 湖北三新磷钙有限公司 Process for preparing tricalcium defluorophosphoric acid
CN201579103U (en) * 2009-12-22 2010-09-15 武汉科技大学 Grinding device for vanadium extraction of stone coal

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Owner name: YUNXI PINGFAN MINING INDUSTRY CO., LTD.

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Address before: 430081 construction of Qingshan District, Hubei, Wuhan

Patentee before: Wuhan University of Science and Technology

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Free format text: CORRECT: ADDRESS; FROM: 430081 WUHAN, HUBEI PROVINCE TO: 442600 SHIYAN, HUBEI PROVINCE