CN105396653B - A kind of Vertical Mill for calcium carbonate grinding - Google Patents

A kind of Vertical Mill for calcium carbonate grinding Download PDF

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Publication number
CN105396653B
CN105396653B CN201510816779.9A CN201510816779A CN105396653B CN 105396653 B CN105396653 B CN 105396653B CN 201510816779 A CN201510816779 A CN 201510816779A CN 105396653 B CN105396653 B CN 105396653B
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China
Prior art keywords
pipe
grinding aid
vertical mill
grinding
connection
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CN201510816779.9A
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Chinese (zh)
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CN105396653A (en
Inventor
彭贵明
陈华平
雷礼强
李林富
王晓洪
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Sichuan Yixin New Materials Co Ltd
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Sichuan Yixin New Materials Co Ltd
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Abstract

The invention discloses a kind of Vertical Mills for calcium carbonate grinding, it includes Vertical Mill(1), the Vertical Mill(1)On be provided with a feed pipe(2), discharge pipe(3)And blast pipe(4)And the wind pressure airlock of Vertical Mill discharge port is arranged on, in Vertical Mill(1)Feed pipe(2)Place is additionally provided with a grinding aid adding set, and the roll-in position of Vertical Mill is provided with a bed of material stabilising arrangement.The beneficial effects of the invention are as follows:It has the advantages that bed of material stability is good, grinding aid conveying is stablized and grinding aid output quantity is adjustable.

Description

A kind of Vertical Mill for calcium carbonate grinding
Technical field
The present invention relates to the productions of calcium carbonate powder, particularly a kind of Vertical Mill for calcium carbonate grinding.
Background technology
Grinding be miberal powder production in one of important procedure, it be ore particles feed powder is milled to by mechanical means it is suitable Granularity, to meet industrial requirement.In powder-grinding process, material particles are progressively refined by equipment fine grinding, specific surface area Increase, surface charged, particle due to chemical bond rupture can be adsorbed mutually to form caking or sticky on abrasive body and liner plate, made Mill efficiency declines, and increases the consumption of the energy, and to solve the above-mentioned problems, most of producers use in grinding process to be added Enter grinding aid to solve the problems, such as this.And ore particles are in grinding, to ensure that grinding machine vibratory output is small, grinding machine stable operation, Bed of material stabilization is an essential condition, and the mode for stablizing the bed of material at present is sprayed water into Vertical Mill, rubbing between increase material Power is wiped, so as to ensure that the uniform bed of material is formed on mill, reduces the vibration of grinding machine.However now in the actual production process, it is single Side multiple spot water spray, water spray is uneven, and the material between mill and grinding roller can be caused uneven, so as to cause the high vibration of grinding machine, The normal operation of equipment is influenced, and the more ejections of water spray now is water column, water column, which will be formed the bed of material, wash away, and make its generation Pit, it is unstable so as to cause the bed of material, and also the flow of water column has mobility, easily so that bed of material part overly moist, influences to grind Disk mills to material with grinding roller, makes its milling quality not high.
Invention content
The shortcomings that it is an object of the invention to overcome the prior art, provide that a kind of bed of material stability is good, grinding aid conveying is steady The fixed and adjustable Vertical Mill for calcium carbonate grinding of grinding aid output quantity.
The purpose of the present invention is achieved through the following technical solutions:A kind of Vertical Mill for calcium carbonate grinding, it includes vertical It grinds, a feed pipe, discharge pipe and blast pipe are provided on the Vertical Mill and are arranged on the wind pressure lock wind dress of Vertical Mill discharge port It puts, a grinding aid adding set is additionally provided at the feed pipe of Vertical Mill, bed of material stabilization is provided at the roll-in position of Vertical Mill Device.
The grinding aid adding set includes grinding aid accumulator tank, grinding aid holding vessel, make-up pump, metering pump and spray Device, the grinding aid accumulator tank is connect with grinding aid holding vessel, and is equipped with make-up pump on the pipeline of connection, described Grinding aid holding vessel is connect by pipeline with spray equipment, and metering pump is provided on the pipeline of connection, the grinding aid Upper and lower ends are both provided with a liquid level sensor in holding vessel, and the liquid level sensor, make-up pump and metering pump are controlled with one Device connection processed, and a frequency converter is provided between controller and metering pump, the spray equipment is arranged in feed pipe.
The bed of material stabilising arrangement includes the distributive pipe of an annular, and distributive pipe is connect with a high-pressure intake pipe, in Fen Shui Multiple outlet pipes are provided on pipe, the outlet pipe penetrates the side wall of Vertical Mill, and is tightly connected with the junction of Vertical Mill, described Outlet pipe front end be provided with a misty spray equipment.
The grinding aid holding vessel lower end is provided with two branch water pipes, is respectively provided in the branch water pipe by a meter Amount pump, is mounted on check-valves in the branch water pipe at metering pump both ends, the branch water pipe respectively with misty spray equipment It connects, a filter is additionally provided in the bypass line that the grinding aid holding vessel is connect with metering pump.
More than at least eight outlet pipe is provided on the distributive pipe, and outlet pipe is evenly distributed on the ring of distributive pipe On shape circumference.
The spray tube that the misty spray equipment is tightly connected including one with outlet pipe, the inner hollow of spray tube, and Its end is closed, and multiple apertures are offered on the side wall of spray tube, helicla flute is provided with, and in aperture in the aperture Water outlet be provided with a spreading grooves.
The present invention has the following advantages:The present invention Vertical Mill, be provided with bed of material stabilising arrangement, the device be provided with it is multiple go out Water pipe is provided with misty spray equipment in outlet pipe, and the spray water of ejection can quickly be carbonated the absorption of calcium particle, so as to Be not in calcium carbonate granule overly moist phenomenon, after calcium carbonate granule is wetted, then increase the friction between calcium carbonate granule Power ensures the stabilization of the bed of material, improves the efficiency of calcium carbonate granule milling, and spray water, the bed of material will not be washed away, So as to further ensure that the stabilization of the bed of material;And the Vertical Mill is additionally provided with grinding aid adding set, and which is provided with change Frequency device and metering pump can control the spray flux of grinding aid, so as to meet the needs of Vertical Mill different feeds amount is to grinding aid, Milling production quality is improved, liquid level sensor is provided with, grinding aid can be added automatically to grinding aid holding vessel, without having to worry about grinding aid Agent is finished, therefore ensure that stablizing for grinding aid sprays;There are two metering pumps for setting, realize the using and the reserved, further ensure Grinding aid steady and continuous sprays.
Description of the drawings
Fig. 1 is the structure diagram of the present invention;
Fig. 2 is grinding aid adding set structure diagram;
Fig. 3 is bed of material stabilising arrangement structure diagram;
Fig. 4 is the structure diagram of misty spray equipment;
Fig. 5 is the schematic cross-sectional view of A-A in Fig. 4;
In figure, 1- Vertical Mills, 2- feed pipes, 3- discharge pipes, 4- blast pipes, 11- grinding aid accumulator tanks, the storage of 12- grinding aids Tank, 13- make-up pumps, 14- metering pumps, 15- spray equipments, 16- liquid level sensors, 17- controllers, 18- branch water pipes, 19- stop Return valve, 111- filters, 112- frequency converters, 21- outlet pipes, 22- distributive pipes, 23- high-pressure intake pipes, 24- mist spray equipments, 25- spray tubes, 251- apertures, 252- helicla flutes, 253- spreading grooves.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings, and protection scope of the present invention is not limited to as described below:
As shown in Figure 1, a kind of Vertical Mill for calcium carbonate grinding, it includes Vertical Mill 1, one is provided on the Vertical Mill 1 Feed pipe 2, discharge pipe 3 and blast pipe 4 and the wind pressure airlock for being arranged on Vertical Mill discharge port, at the feed pipe 2 of Vertical Mill 1 A grinding aid adding set is additionally provided with, the roll-in position of Vertical Mill is provided with a bed of material stabilising arrangement.
In the present embodiment, as shown in Fig. 2, the grinding aid adding set includes grinding aid accumulator tank 11, grinding aid Holding vessel 12, make-up pump 13, metering pump 14 and spray equipment 15, the grinding aid accumulator tank 11 connect with grinding aid holding vessel 12 It connects, and make-up pump 13 is installed on the pipeline of connection, the grinding aid holding vessel 12 is connected by pipeline and spray equipment 15 It connects, and metering pump 14 is provided on the pipeline of connection, upper and lower ends are both provided with a liquid in the grinding aid holding vessel 12 Level sensor 16, the liquid level sensor 16, make-up pump 13 and metering pump 14 are connect with a controller 17, and controller 17 A frequency converter 112 is provided between metering pump, the spray equipment 15 is arranged in feed pipe, can pass through frequency converter 112 The flow of metering pump 14 is adjusted, so as to fulfill the adjusting of profit agent flux is helped.
Further, 12 lower end of grinding aid holding vessel is provided with two branch water pipes 18, the branch water pipe It is respectively provided on 18 by a metering pump 14, check-valves 19, the branch is mounted in the branch water pipe 18 at 14 both ends of metering pump Road water pipe 18 is connect respectively with spray equipment 15, and when a metering pump 14 works, another is then stand-by pump, when wherein one 14 irregular working of metering pump, no flow output are will to start stand-by pump, grinding aid storage automatically by controller 17 It is additionally provided with a filter 111 in the bypass line 18 that tank 12 is connect with metering pump 14, automatic alarm after filter 111 blocks, After being provided with pressure difference switch on the pipeline at 111 both ends of filter, filter pressure at two ends is detected by pressure difference switch, pressure difference is more than Design value will start another metering pump 14 automatically.
In the present embodiment, the course of work of grinding aid adding set is as follows, and controller 17 controls spray equipment and Vertical Mill Startup-shutdown synchronize, when Vertical Mill booting feed intake after, controller 17 according to inventory to frequency converter 112 carry out setting speed, adjust to By control of the frequency converter 112 to metering pump, the grinding aid in grinding aid holding vessel 112 is filled by spraying for the flow of setting 15 uniform sprays are put in feed pipe 12, then powder again brings grinding aid in Vertical Mill 1 into, when 12 lower end of grinding aid holding vessel Liquid level sensor 16 when detecting that liquid level is too low, then controller 17 controls make-up pump 13 to work, will be in grinding aid accumulator tank 11 Promotion to grinding aid holding vessel 12 in, when the liquid level sensor 16 of 12 upper end of grinding aid holding vessel detects liquid level, then control Device 17 processed controls make-up pump 13 to be stopped, and stops giving grinding aid holding vessel 12 interior addition grinding aid, in specific implementation process, The storage capacity of grinding aid holding vessel 12 can at least meet the usage amount of one day.
In the present embodiment, as shown in Fig. 3, Fig. 4 and Fig. 5, the bed of material stabilising arrangement includes the distributive pipe of an annular 22, distributive pipe 22 is connect with a high-pressure intake pipe 23, and multiple outlet pipes 21, the outlet pipe 21 are provided on distributive pipe 22 The side wall of Vertical Mill 1 is penetrated, and is tightly connected with the junction of Vertical Mill 1,21 front end of outlet pipe is provided with a misty spray Device 24, the misty spray equipment 24 include a spray tube 25 being tightly connected with outlet pipe 21, the inside of spray tube 25 It is hollow, and its end is closed, and multiple apertures 251 are offered on the side wall of spray tube 25, are provided in the aperture 251 Helicla flute 252, and a spreading grooves 253 are provided in the water outlet of aperture 251, high pressure water forms high pressure water in spray tube 25 Stream, high pressure water flow are flowed along aperture 251, and helicla flute 252 is then so that high pressure water flow generates a high pressure cyclone, then by small The spreading grooves 253 of 251 front end of hole spray, water formed under the action of high pressure cyclone and spreading grooves 253 again it is misty, so as to accomplish aproll Uniformly, it avoids water column to wash away the bed of material so that the bed of material is not in pit, so as to ensure that the stabilization of the bed of material, and mist It, can be quickly by particulate material after the flow of shape can reduce the dust degree in Vertical Mill, while misty droplet is contacted with particulate material It absorbs so that particulate material is wetted, so as to increase the cementability and frictional force between particulate material and particulate material, so that material Layer is not susceptible to accumulate, so as to ensure that the stabilization of the bed of material when grinding extruding by roller.
In the present embodiment, more than at least eight outlet pipe 21, and outlet pipe 21 are provided on the distributive pipe 22 It is evenly distributed in the annular circumferential of distributive pipe 22, so as to spray water to point positions multiple in Vertical Mill, meets production needs.

Claims (2)

1. a kind of Vertical Mill for calcium carbonate grinding, it includes Vertical Mill(1), the Vertical Mill(1)On be provided with a feed pipe (2), discharge pipe(3)And blast pipe(4)And it is arranged on the wind pressure airlock of Vertical Mill discharge port, it is characterised in that:In Vertical Mill (1)Feed pipe(2)Place is additionally provided with a grinding aid adding set, and a bed of material is provided at the roll-in position of Vertical Mill and stablizes dress It puts;The grinding aid adding set includes grinding aid accumulator tank(11), grinding aid holding vessel(12), make-up pump(13), metering Pump(14)And spray equipment(15), the grinding aid accumulator tank(11)With grinding aid holding vessel(12)Connection, and in connection Make-up pump is installed on pipeline(13), the grinding aid holding vessel(12)Pass through pipeline and spray equipment(15)Connection, and Metering pump is provided on the pipeline of connection(14), the grinding aid holding vessel(12)Interior upper and lower ends are both provided with liquid level biography Sensor(16), the liquid level sensor(16), make-up pump(13)And metering pump(14)With a controller(17)Connection, and control Device processed(17)A frequency converter is provided between metering pump(112), the spray equipment(15)It is arranged in feed pipe, it is described Bed of material stabilising arrangement include one annular distributive pipe(22), distributive pipe(22)With a high-pressure intake pipe(23)Connection, in Fen Shui Pipe(22)On be provided with multiple outlet pipes(21), the outlet pipe(21)Penetrate Vertical Mill(1)Side wall, and and Vertical Mill(1)'s Junction is tightly connected, the outlet pipe(21)Front end is provided with a misty spray equipment(24), described grinding aid storage Tank(12)Lower end is provided with two branch water pipes(18), the branch water pipe(18)On be both provided with a metering pump(14), Metering pump(14)The branch water pipe at both ends(18)On be mounted on check-valves(19), the branch water pipe(18)Respectively with spray Device(15)Connection, the grinding aid holding vessel(12)With metering pump(14)The bypass line of connection(18)On be additionally provided with one Filter(111), the misty spray equipment(24)Including one and outlet pipe(21)The spray tube of sealed connection(25), spray Pipe(25)Inner hollow, and its end close, in spray tube(25)Side wall on offer multiple apertures(251), it is described Aperture(251)Inside it is provided with helicla flute(252), and in aperture(251)Water outlet be provided with a spreading grooves(253).
2. a kind of Vertical Mill for calcium carbonate grinding according to claim 1, it is characterised in that:The distributive pipe(22) On be provided with more than at least eight outlet pipe(21), and outlet pipe(21)It is evenly distributed on distributive pipe(22)Annular circumferential On.
CN201510816779.9A 2015-11-23 2015-11-23 A kind of Vertical Mill for calcium carbonate grinding Active CN105396653B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201510816779.9A CN105396653B (en) 2015-11-23 2015-11-23 A kind of Vertical Mill for calcium carbonate grinding

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CN105396653A CN105396653A (en) 2016-03-16
CN105396653B true CN105396653B (en) 2018-07-10

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107413455A (en) * 2016-03-25 2017-12-01 成都宸鸿科技有限公司 A kind of full-automatic roller cuts grater
CN106238154A (en) * 2016-09-08 2016-12-21 南京凯盛国际工程有限公司 Outer circulation Vertical Mill grinding aid bringing device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191204290A (en) * 1911-03-15 1912-11-28 James Wheeler Fuller Improvements in Pulverizer Mills.
CN2164323Y (en) * 1993-07-22 1994-05-11 张宗隆 Easy adjusting nozzle
JPH06296886A (en) * 1993-04-16 1994-10-25 Kawasaki Heavy Ind Ltd Production of fine powder of granulated blastfurnace slag
CN102580818A (en) * 2012-02-06 2012-07-18 郭健 Vertical grinding machine
CN203140205U (en) * 2013-03-19 2013-08-21 上海宝田新型建材有限公司 Vertical mill grinding aid spraying device
CN203379933U (en) * 2013-07-23 2014-01-08 中材(天津)粉体技术装备有限公司 Internal water spraying device of vertical roller mill
CN203725201U (en) * 2014-02-19 2014-07-23 北京电力设备总厂 Medium-speed vertical mill applied to petroleum coke grinding
CN205109761U (en) * 2015-11-23 2016-03-30 四川亿欣新材料有限公司 A stand and grind for calcium carbonate powder grinds

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191204290A (en) * 1911-03-15 1912-11-28 James Wheeler Fuller Improvements in Pulverizer Mills.
JPH06296886A (en) * 1993-04-16 1994-10-25 Kawasaki Heavy Ind Ltd Production of fine powder of granulated blastfurnace slag
CN2164323Y (en) * 1993-07-22 1994-05-11 张宗隆 Easy adjusting nozzle
CN102580818A (en) * 2012-02-06 2012-07-18 郭健 Vertical grinding machine
CN203140205U (en) * 2013-03-19 2013-08-21 上海宝田新型建材有限公司 Vertical mill grinding aid spraying device
CN203379933U (en) * 2013-07-23 2014-01-08 中材(天津)粉体技术装备有限公司 Internal water spraying device of vertical roller mill
CN203725201U (en) * 2014-02-19 2014-07-23 北京电力设备总厂 Medium-speed vertical mill applied to petroleum coke grinding
CN205109761U (en) * 2015-11-23 2016-03-30 四川亿欣新材料有限公司 A stand and grind for calcium carbonate powder grinds

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