CN102784703A - Serially-connected grinding technology and equipment thereof - Google Patents
Serially-connected grinding technology and equipment thereof Download PDFInfo
- Publication number
- CN102784703A CN102784703A CN2011101334326A CN201110133432A CN102784703A CN 102784703 A CN102784703 A CN 102784703A CN 2011101334326 A CN2011101334326 A CN 2011101334326A CN 201110133432 A CN201110133432 A CN 201110133432A CN 102784703 A CN102784703 A CN 102784703A
- Authority
- CN
- China
- Prior art keywords
- powder
- mill
- grinding
- high pressure
- separating chamber
- 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.)
- Pending
Links
Images
Landscapes
- Crushing And Grinding (AREA)
Abstract
Serially-connected grinding technology and equipment thereof belong to grinding technology and equipment thereof; the equipment comprises a vertical mill, a powder separator, a blower fan, and a ball mill; the powder separator is connected with the upper part of the vertical mill; fine powder collectors are disposed at the periphery of the powder separator; a powder outlet of the powder separator is connected with the ball mil through a powder conveying device; an air outlet of the blower fan is connected with the bottom of the vertical mill; a backwind pipe is connected with the top of the powder separator. The invention adopts the grinding technology combining the vertical mill with the ball mill and the material bed-rolling grinding technology; powder grading is realized inside the equipment; qualified materials are collected in advance, which reduces material underlay and over-grinding phenomena of the ball mill; a traditional mode in which the millstone rotates and the grinding roller is driven for a vertical mill is changed into a mode in which the millstone is fixed and the grinding roller rolls; powder grading is realized inside the equipment; the working efficiency is high; the fine grinding performance is good; the abrasion is less; the energy consumption is low; the investment is saved; and the maintenance is safe and simple.
Description
Technical field
The present invention relates to a kind of grinding process and equipment thereof, particularly a kind of series connection grinding process and equipment thereof.
Background technology
Since China's reform and opening-up, national economy increases fast, and " scientific and technical innovation, autonomous innovation " become the main flow of current industrial development, and China's industry progressively develops to the direction of intensive style, energy-saving and emission-reduction, low-carbon (LC).China is manufacture of cement big country, also is cement consumption big country, reduces the mistake high energy consumption in the cement pulverizing course energetically, and is significant to China's energy-saving and emission-reduction.Add up according to interrelated data; Cement in China factory 1 ton of cement of every production needs the material of grinding more than 30 kinds; And grinding pow consumption accounts for 65%～70% of the total power consumption of manufacture of cement, and the grinding cost accounts for about 35% of total production cost, and the grinding system maintenance capacity accounts for 60% of full plant maintenance capacity.Therefore, grinding is very big to the benefit influence of cement production enterprise, and the energy-saving and emission-reduction task is arduous.Along with implementing of strategy of sustainable development policy; In order further to reduce the manufacture of cement cost, cement industry just in primary study energy savings how, reduces and pollutes; In manufacture of cement, cut down the consumption of energy good, the profitable on ecology high grade cement of exploitation environmental benefit greatly.2009 Chinese cements industry grinding technology summit forum is in Held in Nanjing, and Session Topic is " maximization of production increases with quality up and cost of production down, low cost and benefit " that realizes cement in China grinding technology and technology.Ball mill is that cement powder prepares the most frequently used material grinding equipment, and it is big, firm in structure to have a comminution ratio; Advantages such as single machine yield height and air-tightness are good; But it also has energy utilization efficiency low (generally only reaching 2-3%), and noise is big, the heavy and more high shortcoming of steel consumption of volume.Roll squeezer also is a cement grinding preparatory milling equipment commonly used, roll squeezer technology comparative maturity, and energy-saving effect is apparent in view, and equipment price is also than higher.But roll squeezer to go out machine material particles pattern bad; Influence concrete operability, must all go into abrasive dust mill so roll squeezer goes out the machine material, the material of having reached article requirement goes into to grind once more grinding not only influences mill output; Also cause grinding easily, influenced the clinker strength performance.Over more than 100 year, people have done a large amount of research to the production technology and the mechanical kinetics characteristic of grinding machine, though obtained some progress and achievement, in practice, still have the technical barrier that does not overcome as yet.
Summary of the invention
The objective of the invention is to overcome above deficiency; A kind of series connection grinding process and equipment thereof are provided; Adopt Vertical Mill connect with ball mill grinding process with roll a material bed grinding technology, the most of fine particle that sub-elects is controlled at 60～200 mu m ranges, minimizing ball mill backing strap and the grinding phenomenon; Realize particle classifying at device interior, mill efficiency is high, performance in small, broken bits is good, abrasion are little, energy consumption is low, maintenance safe is simple.
To achieve these goals, technology of the present invention comprises following several steps:
(1) the material process charging aperture for preparing with feed proportioning system through lock feeding device feeding separating chamber, drops on mill central authorities through logical powder pipeline again, and under the effect of distribution device, material moves to wear-resisting mill edge, receives high pressure grinding rolls in the abrasive dust district and mills;
(2) material after pulverizing is blown afloat by the high velocity air that high pressure positive blower produces at the mill edge, and oarse-grained meal falls back on the mill grinding again, and most of powder is brought to powder concentrator by air-flow; Carry out coarse and fine separation through powder-separating area, dust-contained airflow is under the effect of plane eddy current, and middle meal receives action of centrifugal force; After the wind blade wall collides, loses kinetic energy, slide, fall into the meal collection cone along wall; And drop down onto mill grinding again through powder sinking tube, and regulate the powder concentrator speed of mainshaft, make the most of fine particle that sub-elects be controlled at 60～200 mu m ranges; In the cyclone separator that " fine powder " that sub-elects is uniformly distributed with around getting into air-flow; Be slipped in the fine powder collector subsequently and be collected, clean gas flow gets into the high pressure positive blower circulation, gets into once more and mills;
(3) isolated " fine powder " drops down onto the powder transport through powder outlet, grinds through powder transport feeding subsequent ball milling machine, until qualified fineness, is finished product.
In order better to realize above-mentioned purpose; The present invention also provides a kind of equipment of parallelly connected grinding process, is made up of Vertical Mill, powder concentrator, blower fan, ball mill, and Vertical Mill top is connected with powder concentrator; Establish fine powder collector around the powder concentrator; The powder outlet of powder concentrator is carried the assembling device grinding machine of receiving through powder, and fan outlet is connected with the Vertical Mill bottom, and return air duct connects the powder concentrator top; The powder concentrator powder outlet is through the powder transport grinding machine of receiving, and Vertical Mill contains main drive motor, main gear reducer, wear-resisting mill, high pressure vane, high pressure grinding rolls; Powder concentrator contains fine powder collector, lock feeding device, powder-separating area, charging aperture, reductor, drive motors, wind blade, middle meal collection cone, separating chamber, air valve, powder outlet; Blower fan contains high pressure positive blower, blower motor, return air duct, and the high pressure positive blower air inlet is located at the separating chamber bottom, and main drive motor is connected with the main gear reducer main shaft, and main gear reducer is located at the inboard bottom of separating chamber; And be connected with vertical drive shaft, connecing high pressure grinding rolls on the vertical drive shaft, high pressure grinding rolls is located on the wear-resisting mill; Be provided with the high pressure vane around the wear-resisting mill, the separating chamber outside is provided with charging aperture, and the charging aperture place is provided with the lock feeding device; Separating chamber top is powder-separating area, is provided with wind blade around the powder-separating area, and separating chamber's top middle portion is provided with drive motors; Drive motors is connected with the reductor main shaft, and the separating chamber outside is uniformly distributed with four cyclone separators, and cyclone separator top is connected with separating chamber top; The cyclone separator bottom is provided with fine powder collector, and the fine powder collector lower end is provided with air valve, and the air valve lower end is powder outlet; Meal collection cone during the powder-separating area below is provided with, middle meal collection cone is connected with material blanking tube, and the material blanking tube end is positioned at the Vertical Mill top; The powder outlet place is connected to the powder transport, the powder transport other end grinding machine of receiving, and high pressure positive blower is connected with blower motor; The air inlet of high pressure positive blower is located at the separating chamber bottom, return air duct one termination high pressure positive blower, and the other end is connected with the cyclone separator top respectively.
Beneficial effect of the present invention is: adopt Vertical Mill and ball mill combination grinding technology and roll material bed grinding technology, realize particle classifying at device interior, the most of fine particle that sub-elects is controlled at 60～200 mu m ranges, reduces the ball mill backing strap and crosses the grinding phenomenon; With traditional Vertical Mill mill rotate, grinding roller is driven changes that mill is motionless, grinding roller rolls into, reduces to drive hard, good rigidly reduces improper vibrations; On the grinding roller that rolls, pressurize and roll, make grinding pressure than traditional raising 3-4 doubly, mill efficiency is high, and performance in small, broken bits is good; On-load pressure is at the inner autodigestion of Vertical Mill, and the basis requires low, and civil engineering input cost is little; The indoor uniform distribution device that is provided with of grinding can form uniform and stable material bed on mill.
Description of drawings
Be to combine accompanying drawing and embodiment that the present invention is further described below:
Fig. 1 is a kind of series connection grinding process sketch map;
Fig. 2 is a kind of production equipment structural representation of the grinding process of connecting.
In the drawings: meal collection cone, 14 separating chamber, 15 air valves, 16 return air ducts, 17 powder outlets, 18 powder transports, 19 high pressure positive blowers, 20 blower motors, 21 ball mills in 1 main drive motor, 2 main gear reducers, 3 wear-resisting mills, 4 high pressure vanes, 5 high pressure grinding rolls, 6 fine powder collectors, 7 lock feeding devices, 8 powder-separating areas, 9 charging apertures, 10 reductors, 11 drive motors, 12 wind blades, 13.
The specific embodiment
Present embodiment is a kind of series connection grinding process, and technological process is as shown in Figure 1, carries out according to the following steps:
(1) the material process charging aperture 9 for preparing with feed proportioning system; Through lock feeding device 7 feeding separating chamber 14, drop on mill central authorities through logical powder pipeline again, under the effect of distribution device; Material moves to wear-resisting mill 3 edges, receives high pressure grinding rolls 5 in the abrasive dust district and mills;
(2) material after pulverizing is blown afloat by the high velocity air that high pressure positive blower 19 produces at the mill edge, and oarse-grained meal falls back on the mill grinding again, and most of powder is brought to powder concentrator by air-flow; Carry out coarse and fine separation through powder-separating area 8, dust-contained airflow is under the effect of plane eddy current, and middle meal receives action of centrifugal force; After wind blade 12 walls collide, lose kinetic energy, slide, fall into meal collection cone 13 along wall; And drop down onto mill grinding again through powder sinking tube, and regulate the powder concentrator speed of mainshaft, make the most of fine particle that sub-elects be controlled at 60～200 mu m ranges; In the cyclone separator that " fine powder " that sub-elects is uniformly distributed with around getting into air-flow; Be slipped to subsequently in the fine powder collector 6 and be collected, clean gas flow gets into high pressure positive blower 19 circulations, gets into once more and mills;
(3) isolated " fine powder " drops down onto powder transport 18 through powder outlet 17, grinds through powder transport 18 feeding subsequent ball milling machines 21, until qualified fineness, is finished product.
This parallel connection milling equipment is as shown in Figure 2, and high pressure positive blower 19 air inlets are located at separating chamber 14 bottoms, and main drive motor 1 is connected with main gear reducer 2 main shafts; Main gear reducer 2 is located at separating chamber 14 inboard bottoms, and is connected with vertical drive shaft, connects high pressure grinding rolls 5 on the vertical drive shaft; High pressure grinding rolls 5 is located on the wear-resisting mill 3, is provided with high pressure vane 4 around the wear-resisting mill 3, and separating chamber 14 outsides are provided with charging aperture 9; Charging aperture 9 places are provided with lock feeding device 7, and separating chamber 14 tops are powder-separating area 8, and separating chamber's 14 top middle portion are provided with drive motors 11; Drive motors 11 is connected with reductor 10 main shafts, and separating chamber 14 outsides are uniformly distributed with four cyclone separators, and cyclone separator top is connected with separating chamber 14 tops; The cyclone separator bottom is provided with fine powder collector 6, and fine powder collector 6 lower ends are provided with air valve 15, and air valve 15 lower ends are powder outlet 17; Powder-separating area 14 belows are provided with middle meal collection cone 13, and middle meal collection cone 13 is connected with material blanking tube, and the material blanking tube end is positioned at the Vertical Mill top; Powder outlet 17 places are connected to powder transport 18, powder transport 18 other ends grinding machine 21 of receiving, and high pressure positive blower 19 is connected with blower motor 20; The air inlet of high pressure positive blower 19 is located at separating chamber 14 bottoms, return air duct 16 1 termination high pressure positive blowers 19, and the other end is connected with the cyclone separator top respectively.
Hold concurrently grinding and classifying equipoment of series connection grinding process is one; Adopt Vertical Mill and ball mill combination grinding technology and roll material bed grinding technology; Vertical Mill top is connected with powder concentrator, establishes fine powder collector around the powder concentrator, and fan outlet is connected with the Vertical Mill bottom; Return air duct is connected with the powder concentrator top, and the powder concentrator powder outlet is through the powder transport grinding machine of receiving.Wherein, powder concentrator, blower fan, ball mill are all selected existing equipment for use.Roll mill through rolling repeatedly, and regulate the powder concentrator speed of mainshaft, the fine particle that major part is sub-elected is controlled at 60～200 mu m ranges, improves the grinding granule-morphology; Rolling grinding tool has the advantage of vertical mill and roll squeezer to overcome its defective again simultaneously, has improved capacity usage ratio, has reduced the loss of iron and steel in the grinding process.This technology puts on the pressure on the pressure roller to the grinding pressure of material from the deadweight and the spring of pressure roller; As long as pressure roller is applied to the intensity of the stress of material greater than material; Just can or crack, promote the energy that abrasive body consumed when ball mill is worked thereby saved the material crushing; The structure that rolls mill has the selection grading to the material of different-grain diameter; And can drag plus-pressure continuously; There is Continuous Tracking to pulverize effect to individual particle, improved crush efficiency, can realize that thin layer rolls simultaneously; Do not have the rely material bed effect of work of roll squeezer, saved the energy loss that factors such as material bed precommpression cause; Can in grinding machine, the automatic self-loopa of repeated multiple times roll, more much higher than the operating efficiency of roll squeezer, and roll linear velocity doubly than the fast 2-3 of roll squeezer; Because repeatedly circulation rolls the total operating pressure that has reduced pressure roller, and the mechanism pulverized of material bed make pressure roller pressure all act on material bed on, avoided pressure roller to contact, thereby reduced the loss of iron and steel with the direct of mill.
The present invention can also have other embodiments, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the scope of requirement protection of the present invention.
Claims (2)
- One kind the series connection grinding process, it is characterized in that: carry out according to the following steps:(1) the material process charging aperture for preparing with feed proportioning system through lock feeding device feeding separating chamber, drops on mill central authorities through logical powder pipeline again, and under the effect of distribution device, material moves to wear-resisting mill edge, receives high pressure grinding rolls in the abrasive dust district and mills;(2) material after pulverizing is blown afloat by the high velocity air that high pressure positive blower produces at the mill edge, and oarse-grained meal falls back on the mill grinding again, and most of powder is brought to powder concentrator by air-flow; Carry out coarse and fine separation through powder-separating area, dust-contained airflow is under the effect of plane eddy current, and middle meal receives action of centrifugal force; After the wind blade wall collides, loses kinetic energy, slide, fall into the meal collection cone along wall; And drop down onto mill grinding again through powder sinking tube, and regulate the powder concentrator speed of mainshaft, make a most of thin part particle that sub-elects be controlled at 60～200 mu m ranges; In the cyclone separator that " fine powder " that sub-elects is uniformly distributed with around getting into air-flow; Be slipped in the fine powder collector subsequently and be collected, clean gas flow gets into the high pressure positive blower circulation, gets into once more and mills;(3) isolated " fine powder " drops down onto the powder transport through powder outlet, grinds through powder transport feeding subsequent ball milling machine, until qualified fineness, is finished product.
- 2. the equipment of a kind of grinding process of connecting as claimed in claim 1 is characterized in that: be made up of Vertical Mill, powder concentrator, blower fan, ball mill, Vertical Mill top connects powder concentrator, establishes fine powder collector around the powder concentrator; The powder outlet of powder concentrator is carried the assembling device grinding machine of receiving through powder, and fan outlet connects the Vertical Mill bottom, and return air duct connects the powder concentrator top, and the powder concentrator powder outlet is through the powder transport grinding machine of receiving; The high pressure positive blower air inlet is located at the separating chamber bottom, and main drive motor is connected with the main gear reducer main shaft, and main gear reducer is located at the inboard bottom of separating chamber; And be connected with vertical drive shaft, connecing high pressure grinding rolls on the vertical drive shaft, high pressure grinding rolls is located on the wear-resisting mill; Be provided with the high pressure vane around the wear-resisting mill, the separating chamber outside is provided with charging aperture, and the charging aperture place is provided with the lock feeding device; Separating chamber top is powder-separating area, is provided with wind blade around the powder-separating area, and separating chamber's top middle portion is provided with drive motors; Drive motors is connected with the reductor main shaft, and the separating chamber outside is uniformly distributed with four cyclone separators, and cyclone separator top is connected with separating chamber top; The cyclone separator bottom is provided with fine powder collector, and the fine powder collector lower end is provided with air valve, and the air valve lower end is powder outlet; Meal collection cone during the powder-separating area below is provided with, middle meal collection cone is connected with material blanking tube, and the material blanking tube end is positioned at the Vertical Mill top; The powder outlet place is connected to the powder transport, the powder transport other end grinding machine of receiving, and high pressure positive blower is connected with blower motor; The air inlet of high pressure positive blower is located at the separating chamber bottom, return air duct one termination high pressure positive blower, and the other end is connected with the cyclone separator top respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101334326A CN102784703A (en) | 2011-05-15 | 2011-05-15 | Serially-connected grinding technology and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101334326A CN102784703A (en) | 2011-05-15 | 2011-05-15 | Serially-connected grinding technology and equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102784703A true CN102784703A (en) | 2012-11-21 |
Family
ID=47150401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101334326A Pending CN102784703A (en) | 2011-05-15 | 2011-05-15 | Serially-connected grinding technology and equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102784703A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907150A (en) * | 2015-05-05 | 2015-09-16 | 铜陵海源超微粉体有限公司 | High-moisture vertical mill drying in-series grinding process |
| CN106458588A (en) * | 2014-05-30 | 2017-02-22 | 康宁股份有限公司 | Method of ball milling aluminum metaphosphate |
| CN106694109A (en) * | 2017-01-16 | 2017-05-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Limestone dry grinding powder manufacturing process system |
| CN108187827A (en) * | 2018-02-01 | 2018-06-22 | 先拓宏儒新材料（江苏）有限公司 | A kind of slag fine powder mill vertical mill for removing RO phase mineral |
| CN110040998A (en) * | 2019-04-16 | 2019-07-23 | 华南理工大学 | A kind of mill preparation method of inorganic interior maintenance powder body material |
| CN110732382A (en) * | 2019-11-26 | 2020-01-31 | 天津水泥工业设计研究院有限公司 | machine-made sand vertical mill and production process system thereof |
| CN112156855A (en) * | 2020-10-13 | 2021-01-01 | 南京凯盛国际工程有限公司 | Sand making system and operation method thereof |
| CN112156854A (en) * | 2020-10-13 | 2021-01-01 | 南京凯盛国际工程有限公司 | Coarse and fine aggregate simultaneous preparation system |
| CN112844556A (en) * | 2021-01-05 | 2021-05-28 | 南京崇枫日用品有限公司 | Vertical mill equipment for cement processing |
| CN113457792A (en) * | 2021-07-20 | 2021-10-01 | 天津水泥工业设计研究院有限公司 | Design method of feed back control device of vertical roller mill powder concentrator |
| CN117583077A (en) * | 2023-12-07 | 2024-02-23 | 盐城市群盛环保设备有限公司 | Anti-blocking powder concentrator for coal ash and use method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1317267C (en) * | 1987-03-24 | 1993-05-04 | Hirohisa Yoshida | Roller mill |
| JPH09276727A (en) * | 1996-04-18 | 1997-10-28 | Kawasaki Heavy Ind Ltd | Device for pulverizing cement clinker by a vertical roller mill and method thereof |
| CN1485149A (en) * | 2002-09-29 | 2004-03-31 | 吕海峰 | Three composition dividing powder separating machine |
| CN1943862A (en) * | 2006-10-25 | 2007-04-11 | 夏纪勇 | Vertical roller grinder |
| CN101134175A (en) * | 2007-09-24 | 2008-03-05 | 天津水泥工业设计研究院有限公司 | Roller press combination grinding device |
| 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 |
| CN101722083A (en) * | 2008-10-14 | 2010-06-09 | 王华业 | Grinding method and grinding device |
| CN101850286A (en) * | 2009-04-01 | 2010-10-06 | 王华业 | Vertical roller mill with internal screening device |
| CN101966479A (en) * | 2010-10-13 | 2011-02-09 | 湖南广义科技有限公司 | Vertical roll grinder |
-
2011
- 2011-05-15 CN CN2011101334326A patent/CN102784703A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1317267C (en) * | 1987-03-24 | 1993-05-04 | Hirohisa Yoshida | Roller mill |
| JPH09276727A (en) * | 1996-04-18 | 1997-10-28 | Kawasaki Heavy Ind Ltd | Device for pulverizing cement clinker by a vertical roller mill and method thereof |
| CN1485149A (en) * | 2002-09-29 | 2004-03-31 | 吕海峰 | Three composition dividing powder separating machine |
| CN1943862A (en) * | 2006-10-25 | 2007-04-11 | 夏纪勇 | Vertical roller grinder |
| CN101134175A (en) * | 2007-09-24 | 2008-03-05 | 天津水泥工业设计研究院有限公司 | Roller press combination grinding device |
| CN101722083A (en) * | 2008-10-14 | 2010-06-09 | 王华业 | Grinding method and grinding device |
| CN101850286A (en) * | 2009-04-01 | 2010-10-06 | 王华业 | Vertical roller mill with internal screening device |
| 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 |
| CN101966479A (en) * | 2010-10-13 | 2011-02-09 | 湖南广义科技有限公司 | Vertical roll grinder |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106458588A (en) * | 2014-05-30 | 2017-02-22 | 康宁股份有限公司 | Method of ball milling aluminum metaphosphate |
| CN104907150A (en) * | 2015-05-05 | 2015-09-16 | 铜陵海源超微粉体有限公司 | High-moisture vertical mill drying in-series grinding process |
| CN106694109A (en) * | 2017-01-16 | 2017-05-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Limestone dry grinding powder manufacturing process system |
| CN106694109B (en) * | 2017-01-16 | 2019-09-06 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of lime stone dry grinding flouring technology system |
| CN108187827A (en) * | 2018-02-01 | 2018-06-22 | 先拓宏儒新材料（江苏）有限公司 | A kind of slag fine powder mill vertical mill for removing RO phase mineral |
| CN110040998A (en) * | 2019-04-16 | 2019-07-23 | 华南理工大学 | A kind of mill preparation method of inorganic interior maintenance powder body material |
| CN110732382A (en) * | 2019-11-26 | 2020-01-31 | 天津水泥工业设计研究院有限公司 | machine-made sand vertical mill and production process system thereof |
| CN112156855A (en) * | 2020-10-13 | 2021-01-01 | 南京凯盛国际工程有限公司 | Sand making system and operation method thereof |
| CN112156854A (en) * | 2020-10-13 | 2021-01-01 | 南京凯盛国际工程有限公司 | Coarse and fine aggregate simultaneous preparation system |
| CN112844556A (en) * | 2021-01-05 | 2021-05-28 | 南京崇枫日用品有限公司 | Vertical mill equipment for cement processing |
| CN113457792A (en) * | 2021-07-20 | 2021-10-01 | 天津水泥工业设计研究院有限公司 | Design method of feed back control device of vertical roller mill powder concentrator |
| CN117583077A (en) * | 2023-12-07 | 2024-02-23 | 盐城市群盛环保设备有限公司 | Anti-blocking powder concentrator for coal ash and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102784703A (en) | Serially-connected grinding technology and equipment thereof | |
| CN202137014U (en) | Outer circulation deironing grinding equipment | |
| CN102784702A (en) | Parallelly-connected grinding technology and equipment thereof | |
| CN202137015U (en) | Open-circuit finish grinding equipment | |
| CN102389852B (en) | Multitime-separation high-efficient cement vertical mill | |
| CN205340923U (en) | Two output mode grind immediately | |
| CN105080698B (en) | Use the grinding process of vertical roller grinder system | |
| CN105435905A (en) | Double-output-mode vertical mill | |
| CN105080662A (en) | Powder production device | |
| CN205462480U (en) | Superfine grinding system is used to cement manufacture | |
| CN111822129A (en) | Iron ore dry grinding and dressing device and process | |
| CN104043592A (en) | Novel double-transmission environment-friendly high-efficiency sorting machine | |
| CN114289158A (en) | Petroleum fracturing propping agent and preparation process thereof | |
| CN203917150U (en) | Novel pair of transmission environment protection energy-saving efficient separator | |
| CN102363127A (en) | Opposite netted disc mill | |
| CN202377048U (en) | Rolling mill | |
| CN202137013U (en) | Closed-circuit final grinding device | |
| CN212820408U (en) | Vertical mill grinding system for grinding weak-magnetic refractory iron ore | |
| CN100443187C (en) | Vertical roller grinder | |
| CN102784690A (en) | External-circulation iron-removing grinding technology | |
| CN202290187U (en) | Grinding table of vertical cement clinker grinder | |
| CN210497245U (en) | High dispersion vortex powder separator | |
| CN102784691A (en) | Open circuit final grinding technology | |
| CN103301909B (en) | Improved Raymond mill | |
| CN113953027B (en) | Powder selecting and grinding integrated ball mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121121 |