CN105709883A - Cement semi-final powder milling vertical milling and ball milling combination system - Google Patents
Cement semi-final powder milling vertical milling and ball milling combination system Download PDFInfo
- Publication number
- CN105709883A CN105709883A CN201610202243.2A CN201610202243A CN105709883A CN 105709883 A CN105709883 A CN 105709883A CN 201610202243 A CN201610202243 A CN 201610202243A CN 105709883 A CN105709883 A CN 105709883A
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- Prior art keywords
- vertical
- cone
- stator blade
- cement
- grinding
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- 239000004568 cement Substances 0.000 title claims abstract description 34
- 238000000498 ball milling Methods 0.000 title claims description 20
- 238000007780 powder milling Methods 0.000 title abstract 3
- 238000003801 milling Methods 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 49
- 239000011265 semifinished product Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims description 61
- 239000000047 product Substances 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 16
- 239000012716 precipitator Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 15
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract 6
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 7
- 239000008187 granular material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a cement semi-final powder milling vertical mill. Based on the traditional vertical mill, static blades 1, static blades 2, a rotor and a discharge pipe are separately arranged at the upper part of a vertical mill shell from outside to inside; the static blades 1 and the static blades 2 are separately fixed on an internal shell from outside to inside; the lower parts of the static blades 1 and the static blades 2 are separately connected with a discharge cone 1 and a discharge cone 2; a cone part of the discharge cone 1 is connected with a discharge port; a cone part of the discharge cone 2 is connected with a semi-finished product discharge port; the discharge pipe communicates with the discharge cone 1 after penetrating through the discharge cone 2 to form a mixing cavity; the rotor includes a series of movable blades distributed in the radial direction of the discharge pipe; and a space in the rotor communicates with an air outlet. The invention further discloses a combination system including the vertical mill. According to the combination system, multiple times of separation in the vertical mill can be realized to improve the powder milling efficiency of the vertical mill and the powder separation efficiency of a powder concentrator, and the fineness of semi-finished materials can be controlled to facilitate improvement of the cement quality.
Description
Technical field
The invention belongs to cement grinding technical field, be specifically related to the whole grinding vertical of a kind of cement half and the association system with ball milling thereof.
Background technology
Current cement grinding mainly adopts ball milling or the different grinding systems of roll squeezer+ball milling composition.Compared with ball mill, Vertical Mill has mill efficiency height, power consumption low (economizing on electricity 20%～30% than ball mill), drying capacity is big, permission mill feed material size is big, grinding process is simple, floor space is little, civil engineering costs is low, noise is low, wear and tear little, life-span is long, the advantages such as processing ease, pulverizing cement raw material and coal dust it are widely used in, but it is used for producing cement to there is presently no and obtain popularity, main cause one is that Vertical Mill is for whether cement finish grinding really receives energy-saving effect, two is that Vertical Mill may change cement characteristics for producing cement, such as product fineness, grain composition, pattern etc., the requirement so that it can not be up to state standards.
Patent ZL201010191141.8 discloses a kind of semi-finished pre-grinding vertical and ball milling combination grinding device, half whole grinding vertical is combined with ball milling, first material is carried out half whole grinding by half whole grinding vertical system, then whole grinding is carried out by the closed circuit milling system with powder concentrator, this technique can play the advantage of Vertical Mill and ball milling, make the cement granules pattern after grinding better, mill efficiency improves, but the Vertical Mill in system is according to conventional internal recycle roller mill separator, owing to needs pass into a large amount of hot blast, the high speed of blowing device blowout air-flow upwards can not be too big, otherwise more coarse powder can be blown into powder concentrator with fine powder, so that increase energy consumption.Meanwhile, if coarse powder and fine powder can not be effectively separated in powder concentrator, the powder particles causing entry into ball mill is wayward, and part fine powder formed grinding at ball mill.
Summary of the invention
It is an object of the invention to overcome the uppity shortcoming of fineness of the semi-product material that existing Vertical Mill is low as half whole mill efficiency, produce, improve powder concentrator separation efficiency and Cement Quality, it is provided that the Vertical Mill of a kind of half whole grinding.
The technical solution used in the present invention is:
A kind of whole grinding vertical of cement half, including reductor, blowing device, mill, lining board for grinding discs, grinding roller, feeding mouth, air outlet, it is characterized in that, the stator blade one being positioned at same axle center it is respectively equipped with at vertical mill casing top ecto-entad, stator blade two, rotor, tremie pipe, feeding mouth is positioned at tremie pipe top, stator blade one and stator blade two ecto-entad are separately fixed on inner shell, the bottom of stator blade one and stator blade two connects blanking cone one and blanking cone two respectively, space between stator blade one and blanking cone one and housing communicates with slag-drip opening, the tapering of blanking cone one connects feed opening, the tapering of blanking cone two connects semi-finished product discharging opening, tremie pipe is bored one with blanking after blanking cone two and is communicated, form batch mixing chamber, rotor is arranged around tremie pipe, rotor includes a series of radially-arranged moving vane, space in rotor communicates with air outlet.
Preferably, the angle adjustable of stator blade；The cone angle that the cone angle of blanking cone one is bored less than blanking.
Invention additionally discloses a kind of Vertical Mill ball milling association system, described system includes the whole grinding vertical of foregoing cement half and ball milling, it is characterized in that, the feeding mouth of the whole grinding vertical of described cement half connects feed proportioning system, slag-drip opening connects feed proportioning system by belt feeder, to send into Vertical Mill with dispensing after being mixed by the coarse fodder that slag-drip opening is discharged；The semi-finished product discharging opening of the whole grinding vertical of cement half is received mill feeding mouth by belt feeder, ball milling discharging opening connects powder concentrator by belt feeder and elevator, the finished product fines that powder concentrator is selected delivers to warehouse for finished product after dust-precipitator is collected, and the coarse fodder that the coarse fodder selected is discharged with the semi-finished product discharging opening of the whole grinding vertical of cement half is re-fed into ball milling after mixing；The air outlet of the whole grinding vertical of cement half connects dust-precipitator by pipeline, and fines enters warehouse for finished product after dust-precipitator is collected.
Beneficial effect: the whole grinding vertical of the half of the present invention and comprise the system of this Vertical Mill, the device utilizing stator blade and moving vane that thickness powder is easily separated it is additionally arranged in Vertical Mill, improve the mill efficiency of Vertical Mill and the grinding efficiency of powder concentrator, the fineness of semi-product material can be controlled simultaneously, be conducive to improving Cement Quality.Producing centrifugal force by moving vane in Vertical Mill, two-stage stator blade adds moving vane step-sizing, and varigrained powder and granule are easily separated, and screens finished product, it is prevented that crossing grinding, semi-finished product are delivered to ball milling and processed further, and thick slag enters back into feed proportioning system.The Vertical Mill of the present invention and association system can be greatly enhanced cement products quality, improve grinding and grinding efficiency, and by the adjustment of stator blade, technique is easily controlled.
Accompanying drawing explanation
Fig. 1 is Vertical Mill structural representation；
Fig. 2 is the profile at the I-I position shown in Fig. 1；
Fig. 3 is the structural representation of present system.
In the drawings, 1, reductor；2, blowing device；3, mill；4, lining board for grinding discs；5, grinding roller；6, blanking cone one；7, blanking cone two；8, tremie pipe；9, stator blade one；10, stator blade two；11, rotor；12, feeding mouth；13, air outlet；14, batch mixing chamber；15, feed opening；16, semi-finished product discharging opening；17, slag-drip opening；18, moving vane.
Fig. 1 represents shown in arrow respectively: x1, powder 1；X2, powder 2；X3, powder 3；C1, coarse fodder 1；C2, coarse fodder 2；C3, coarse fodder 3.
Detailed description of the invention
For overcoming some shortcomings of prior art, improving the mill efficiency of Vertical Mill and the grinding efficiency of powder concentrator, can control the fineness of semi-product material simultaneously, the present invention proposes a kind of half whole grinding vertical, it may be achieved repeatedly sorts in Vertical Mill, is conducive to improving Cement Quality.
The technical solution used in the present invention is: on existing cement vertical mill basis, set up thick fine powder separator further.Half described whole grinding vertical structure specifically includes that grinding roller, mill, lining board for grinding discs, blowing device, reductor, feeding mouth, air outlet, semi-finished product discharging opening, slag-drip opening, blanking cone one, blanking cone two, tremie pipe, stator blade one, stator blade two, rotor.Selecting powder segregation apparatus as the whole grinding vertical of the present invention half, in housing, ecto-entad is respectively equipped with concentric stator blade one, stator blade two, rotor, tremie pipe.Wherein said stator blade one and one end of stator blade two are separately fixed on powder concentrator, and the other end is connected with blanking cone one, blanking cone two respectively.The tapering of described blanking cone one connects feed opening.Described blanking cone two is positioned at the inside of blanking cone one, and tapering is provided with semi-finished product discharge nozzle, and the cone line that semi-finished product discharge nozzle bores two along blanking is drawn, and to prevent powder from piling up, and the tapering angle of blanking cone two bores the tapering angle of more than blanking, connects feed opening.Described tremie pipe is bored one with blanking after blanking cone two and is communicated.
The material that grinding roller is pulverized by the spray nozzle device high speed of Vertical Mill thermal current upwards carries out first time sorting, and the powder after sorting is raised in the powder concentrator that air-flow brings to Vertical Mill top, and large granular materials is discharged from the slag-drip opening of lower end.
Powder and the mixture of air after first time sorting are become tangential flowing from vertical ascent after entering powder concentrator, in scope between stator blade one, stator blade two, rotor blade, rotor rotate the centrifugal force formed and powder and air mixture are repeatedly sorted.Large granular materials through stator blade one is flung outward out and sinks under gravity, after leaving centrifugal force scope, falls into blanking cone one, and enters Vertical Mill through feed opening；Fine powder is after stator blade two, and the space entered between stator blade and rotor sorts again, and the coarse powder sorted is discharged by the semi-finished product discharging opening of blanking cone two, and qualified finished product is discharged from the air outlet on powder concentrator top.
Rotated under the centrifugal action that formed successively through stator blade one, stator blade two, rotor by rotor, powder and air mixture are carried out respectively second time, for the third time, sort for the 4th time.Being fallen into Vertical Mill by the large granular materials after the sorting of stator blade one, another part material enters stator blade two and carries out third time sorting；Coarse fodder after third time sorting enters Vertical Mill by the feed opening of blanking cone one, and another part material enters rotor and carries out the 4th sorting；Semi-product material after 4th sorting is discharged by the semi-finished product discharging opening of blanking cone two, and qualified finished product is discharged from the air outlet on powder concentrator top.
Referring to accompanying drawing 1, the half whole grinding vertical of the present invention specifically includes that grinding roller 5, mill 3, lining board for grinding discs 4, blowing device 2, reductor 1, feeding mouth 12, air outlet 13, semi-finished product discharging opening 16, slag-drip opening 17, blanking cone 1, blanking cone 27, tremie pipe 8, stator blade 1, stator blade 2 10, rotor 11, and rotor 11 comprises a series of moving vane 18 being radially arranged.
When described Vertical Mill works, motor is rotated by reductor 1 band movable grinding disc 3, material falls lining board for grinding discs 4 central authorities by feeding mouth 12 through tremie pipe 8, material moves to mill 3 edge and is subject to rolling of grinding roller 5 under the influence of centrifugal force, material after pulverizing overflows from mill 3 edge, drying is taken up from spray nozzle device 2 at a high speed thermal current upwards, carry out first time sorting, what the powder x1 after sorting was raised that air-flow brings to Vertical Mill top selects in powder segregation apparatus, coarse fodder c1 discharges from the slag-drip opening 17 of lower end, again grinding again is fed in mill from spout through the bucket elevator of outer circulation.
Powder and the mixture of air after first time sorting are become tangential flowing from vertical ascent after entering powder concentrator.In scope between stator blade 1, stator blade 2 10 and rotor 11, rotor 11 rotate the centrifugal force that formed by powder x1 and air mixture stator blade 1 and carry out second time in passage that stator blade 2 10 is formed and sort；The coarse fodder c2 that second time sorts falls into blanking cone 1, blanking cone 27 and in the batch mixing chamber 14 of tremie pipe 8 formation, returns on lining board for grinding discs 4 then through feed opening 15, grinding again.Third time sorting is carried out in the passage that powder x2 after second time sorting is brought to stator blade 2 10 by air-flow and rotor 11 is formed；The export of goods in process of manufacture 16 that the coarse fodder c3 that third time sorts out bores 7 from blanking is discharged, and third time sorts out fine powder x3 and upwards goes out mill from the air outlet 13 of powder concentrator upper end with air-flow, collects, be qualified products in the dust arrester installation of system.
Referring back to accompanying drawing 2, it is shown that the structure of stator blade and rotor.Rotor 11 comprises a series of moving vane 18 being radially arranged around tremie pipe 8, and the space of internal rotor connects air outlet 13.Rotor rotates and produces centrifugal force, and the adjustable angle of stator blade 1 and stator blade 2 10, such that it is able to the granularity realizing separating regulates, improves Cement Quality.
Accompanying drawing 3 illustrates the system of the half whole grinding vertical comprising the present invention.As shown in the figure, raw material is delivered to Vertical Mill feeding mouth by elevator by feed proportioning system, after raw material grinds separation in Vertical Mill, produce to deliver to Vertical Mill feeding mouth after coarse fodder c1, coarse fodder c2, coarse fodder c3 and powder x3, coarse fodder c1 deliver to feed proportioning system mixing from the discharge of Vertical Mill slag-drip opening then through belt feeder.Coarse fodder c2 bores an entrance batch mixing chamber along blanking, enters back into Vertical Mill together with the dispensing got off with feeding mouth.The coarse fodder c3 separated further across rotor and stator blade two bores two from the discharge of semi-finished product discharging opening along blanking, delivers to ball milling through belt feeder.The powder x3 produced after rotor separates is delivered to by Vertical Mill air outlet after dust-precipitator is collected and delivers to warehouse for finished product.The discharging of ball milling delivers to powder concentrator by belt feeder and elevator, and the finished product fines that powder concentrator is selected delivers to warehouse for finished product after dust-precipitator is collected, and the coarse fodder c3 that the coarse fodder selected is discharged with the semi-finished product discharging opening of the whole grinding vertical of cement half is re-fed into ball milling after mixing.
By means of the Vertical Mill ball milling association system of the present invention, material is sufficiently separated, and granularity is easily subject to control, it is prevented that cross the generation of grinding.The different material of suitable granularity is made different disposal, product quality and production efficiency and is improved.
Above in conjunction with accompanying drawing, embodiments of the present invention are described in detail, but the invention is not restricted to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, it is also possible to make a variety of changes under the premise without departing from present inventive concept.
Claims (4)
1. the whole grinding vertical of cement half, including reductor, blowing device, mill, lining board for grinding discs, grinding roller, feeding mouth, air outlet, it is characterized in that, the stator blade one being positioned at same axle center it is respectively equipped with at vertical mill casing top ecto-entad, stator blade two, rotor, tremie pipe, feeding mouth is positioned at tremie pipe top, stator blade one and stator blade two ecto-entad are separately fixed on inner shell, the bottom of stator blade one and stator blade two connects blanking cone one and blanking cone two respectively, space between stator blade one and blanking cone one and housing communicates with slag-drip opening, the tapering of blanking cone one connects feed opening, the tapering of blanking cone two connects semi-finished product discharging opening, tremie pipe is bored one with blanking after blanking cone two and is communicated, form batch mixing chamber, rotor is arranged around tremie pipe, rotor includes a series of radially-arranged moving vane, space in rotor communicates with air outlet.
2. the whole grinding vertical of cement half as claimed in claim 1, it is characterised in that the angle adjustable of stator blade.
3. the whole grinding vertical of cement half as claimed in claim 1, it is characterised in that the cone angle of blanking cone one bores the cone angle of two less than blanking.
4. a Vertical Mill ball milling association system, described system includes grinding vertical as whole in cement in any one of the preceding claims wherein half and ball milling, it is characterized in that, the feeding mouth of the whole grinding vertical of described cement half connects feed proportioning system, slag-drip opening connects feed proportioning system by belt feeder, to send into Vertical Mill with dispensing after being mixed by the coarse fodder that slag-drip opening is discharged；The semi-finished product discharging opening of the whole grinding vertical of cement half is received grinding machine feeding mouth by conveying equipment, ball mill discharging mouth connects powder concentrator by conveying equipment and elevator, the finished product fines that powder concentrator is selected delivers to warehouse for finished product after dust-precipitator is collected, and the coarse fodder that the coarse fodder selected is discharged with the semi-finished product discharging opening of the whole grinding vertical of cement half is re-fed into ball milling after mixing；The air outlet of the whole grinding vertical of cement half connects dust-precipitator by pipeline, and fines enters warehouse for finished product after dust-precipitator is collected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202243.2A CN105709883A (en) | 2016-04-05 | 2016-04-05 | Cement semi-final powder milling vertical milling and ball milling combination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202243.2A CN105709883A (en) | 2016-04-05 | 2016-04-05 | Cement semi-final powder milling vertical milling and ball milling combination system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105709883A true CN105709883A (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610202243.2A Pending CN105709883A (en) | 2016-04-05 | 2016-04-05 | Cement semi-final powder milling vertical milling and ball milling combination system |
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| CN (1) | CN105709883A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040405A (en) * | 2016-07-26 | 2016-10-26 | 新乡市长城机械有限公司 | Pre-grinding vertical mill united semi-finish grinding system with built-in powder concentrator |
| CN106269160A (en) * | 2016-08-26 | 2017-01-04 | 孟玲 | A kind of powder processing system with deferrization functional |
| CN107469944A (en) * | 2017-09-25 | 2017-12-15 | 桂林鸿程矿山设备制造有限责任公司 | Raymond machine fine powder, coarse powder and sand are integrally machined system |
| CN108160292A (en) * | 2017-12-28 | 2018-06-15 | 宜宾市天顺建材集团股份有限公司 | A kind of grinding device and grinding method |
| CN111841767A (en) * | 2019-04-24 | 2020-10-30 | 合肥中亚建材装备有限责任公司 | A new type of vertical grinding powder separator |
| CN112108255A (en) * | 2020-10-13 | 2020-12-22 | 南京凯盛国际工程有限公司 | Vertical grinding sand making system with shaping function |
| CN113426530A (en) * | 2021-07-07 | 2021-09-24 | 郑州沃特节能科技股份有限公司 | Device and method for preparing superfine composite micro powder |
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| JP2004188368A (en) * | 2002-12-13 | 2004-07-08 | Ube Machinery Corporation Ltd | Grinding method |
| CN102179285A (en) * | 2011-03-02 | 2011-09-14 | 江苏羚羊水泥工程技术有限公司 | Single-compartment ball mill type cement vertical mill grinding device |
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| CN104984911A (en) * | 2015-07-28 | 2015-10-21 | 江苏羚羊水泥工程技术有限公司 | Rotor type powder concentrator |
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| CN105797833A (en) * | 2016-05-10 | 2016-07-27 | 江苏新业重工股份有限公司 | Phosphorous slag pulverizing system |
| CN205550427U (en) * | 2016-04-05 | 2016-09-07 | 江苏羚羊水泥工程技术有限公司 | Half whole grinding of cement grinds and ball -milling combination system immediately |
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| JP2004188368A (en) * | 2002-12-13 | 2004-07-08 | Ube Machinery Corporation Ltd | Grinding method |
| CN102179285A (en) * | 2011-03-02 | 2011-09-14 | 江苏羚羊水泥工程技术有限公司 | Single-compartment ball mill type cement vertical mill grinding device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040405A (en) * | 2016-07-26 | 2016-10-26 | 新乡市长城机械有限公司 | Pre-grinding vertical mill united semi-finish grinding system with built-in powder concentrator |
| CN106269160A (en) * | 2016-08-26 | 2017-01-04 | 孟玲 | A kind of powder processing system with deferrization functional |
| CN107469944A (en) * | 2017-09-25 | 2017-12-15 | 桂林鸿程矿山设备制造有限责任公司 | Raymond machine fine powder, coarse powder and sand are integrally machined system |
| CN108160292A (en) * | 2017-12-28 | 2018-06-15 | 宜宾市天顺建材集团股份有限公司 | A kind of grinding device and grinding method |
| CN111841767A (en) * | 2019-04-24 | 2020-10-30 | 合肥中亚建材装备有限责任公司 | A new type of vertical grinding powder separator |
| CN112108255A (en) * | 2020-10-13 | 2020-12-22 | 南京凯盛国际工程有限公司 | Vertical grinding sand making system with shaping function |
| CN112108255B (en) * | 2020-10-13 | 2024-04-12 | 中材国际智能科技有限公司 | Vertical mill sand making system with shaping function |
| CN113426530A (en) * | 2021-07-07 | 2021-09-24 | 郑州沃特节能科技股份有限公司 | Device and method for preparing superfine composite micro powder |
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