CN109382191A - Slag micro powder equipment - Google Patents

Slag micro powder equipment Download PDF

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Publication number
CN109382191A
CN109382191A CN201710690465.8A CN201710690465A CN109382191A CN 109382191 A CN109382191 A CN 109382191A CN 201710690465 A CN201710690465 A CN 201710690465A CN 109382191 A CN109382191 A CN 109382191A
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CN
China
Prior art keywords
connect
ball mill
elevator
ultra
micro powder
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Withdrawn
Application number
CN201710690465.8A
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Chinese (zh)
Inventor
杨镜湖
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Individual
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Individual
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Priority to CN201710690465.8A priority Critical patent/CN109382191A/en
Publication of CN109382191A publication Critical patent/CN109382191A/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00Crushing or disintegrating by reciprocating members
    • B02C1/02Jaw crushers or pulverisers
    • B02C1/04Jaw crushers or pulverisers with single-acting jaws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/10Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00Disintegrating plant with or without drying of the material

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

The present invention relates to slag micro powder equipment, belong to disintegrating apparatus technical field;The pulverizer is connect with crusher;The pulverizer is connect with the bottom of elevator one;The top of the elevator one is connect with feed bin one;The bottom of the feed bin one is equipped with frequency conversion feeding device;The frequency conversion feeding device is connect with ultra-fine ball mill;The tail portion of the ultra-fine ball mill is connect with elevator two;The side of elevator two is arranged in the feed bin two;The bottom of the feed bin two is connect with classifying equipoment;The top of the classifying equipoment is connect with cyclone collector;The lower section of the classifying equipoment is connect with feed back screw;The other end of the feed back screw is connect with ultra-fine ball mill;Easy to operate, flexibility is good, and stability is high, can the processing of midway return, the quality of processing discharging can be improved, and not will cause the waste of material, all automation processing, reduces human cost.

Description

Slag micro powder equipment
Technical field
The present invention relates to slag micro powder equipment, belong to disintegrating apparatus technical field.
Background technique
Disintegrating apparatus is the general name of crushing mechanism and grinding machine.The two usually arranges the size of material granularity to make rough area Point: content Zhan total withdrawal rate 50% or more person of the granularity greater than 3 millimeters is known as crushing mechanism in discharge;Content less than 3 millimeters accounts for 50% or more person of total withdrawal rate is then known as grinding machine.Sometimes grinding machine is also known as milling machinery, this is the narrow of disintegrating apparatus Adopted connotation.Comminution process is carried out to solid material using mechanical force, is allowed to become the machinery of fritter, fine powder or powder.Utilize powder Broken mechanical the characteristics of carrying out comminution process is that the dosage of big energy consumption, wear-resistant material and abrasive media is more, and dust is serious and makes an uproar Sound is big etc..
It is earliest animal power mill of B.C. fourth century by public defeated class's invention using the milling machinery of continuous crushing movement, it is another Kind is that roller is ground using the milling machinery of continuous crushing movement, its appearance period, which is later than, grinds.Christian era two, China shut out after death Pre- etc. have developed on the basis of foot-operated treadle-operated tilt hammer for hulling rice and animal power are ground turns company by company's machine water-powered trip-hammer of motive power, two water mills of company, water of waterpower Mill etc., reaches a new high production efficiency.These are mechanical in addition to for cereal processing, extend also to unclassified stores On comminution process.
The milling machinery in modern age is created in succession after the dynamic power machines such as steam engine and motor are gradually improved and promoted Out.There is within 1806 the kibbler roll driven with steam engine;1858, the Bu Laike in the U.S. invented fractured rock Jaw crusher;The U.S. in 1878 has developed the gyratory crusher with continuous crushing movement, and production efficiency is higher than between work It has a rest the jaw crusher of crushing action;1895, the lower impact crusher of William's invention energy consumption in the U.S..
At the same time, there has also been corresponding development, initial stage in 19th century widely used ball mill occurs for grinding machine; On the basis of ball mill, the uniform rod mill of marker size is developed within 1870;It formulates out again within 1908 and does not have to abrasive media Autogenous tumbling mill.30~fifties of twentieth century, the U.S. and Germany develop the vertical shaft types such as roller bowl coal pulverizer, roller disk coal pulverizer in succession Medium-speed pulverizer.The appearance of these milling machineries, the effect of substantially increasing comminution process.But due to the powder of various materials Broken characteristic is mutually variant, and different industries are also different from each other to the granularity requirements of product.
Steel slag is mainly made of the oxide of calcium, iron, silicon, magnesium and a small amount of aluminium, manganese, phosphorus etc..Main mineral facies are silicic acid Tricalcium, dicalcium silicate, monticellite, calcium and magnesium rhodonite, calcium aluminoferrite and silicon, magnesium, iron, manganese, phosphorus oxide formed Solid solution, also contain a small amount of free calcium oxide and metallic iron, fluor-apatite etc..Some areas are because of ore titaniferous and vanadium, steel Also slightly contain these ingredients in slag.The content of various composition is because of the steel-making type of furnace, steel grade and every furnace steel smelting stage in steel slag Difference has biggish difference.Since the ingredient fluctuation of steel slag is larger, extremely unstable, slowly fail practical application.For example, The aggregate that concrete is made of steel slag, concrete can play drum, explosion after a period of time.
Steel slag is formed at 1500~1700 DEG C of temperature, is in a liquid state under high temperature, in bulk after Slow cooling, generally deeply Ash, dark brown.Sometimes it is converted into hydroxide because contained free calcium, magnesium oxide are reacted with water or moisture, causes clinker volume It expands and fragmentation;Sometimes because that contained a large amount of dicalcium silicates are changed into γ type by β type (at about 675 DEG C) in cooling procedure is broken It splits.It, can quenching granulating such as with suitable quantity of water treatment liquid steel slag.
Early in the twentieth century begin one's study the utilization of steel slag, but since its ingredient fluctuates larger, slowly fails actually to answer With.The beginning of the seventies, the U.S. first the 17000000 tons of steel slags discharged every year all of.Currently, the republicanism of federation, Germany State, the steel slag overwhelming majority have been utilized.Britain, French utilization rate of steel slag are 60% or so, and Japan is 50% or so, China It is 10% or so.
The passing method that world many countries handle steel slag is hot application method, i.e., sprinkles liquid steel slag into special Treatment stations, Thickness of slag layer hereinafter, spraying suitable water promotees its cooling, is then crushed, is sieved, magnetic separation at 30 centimetres, wherein golden to recycle Belong to, clinker is then comprehensively utilized.
At home, temporarily there are no matched complete set of equipments to handle steel slag, and some is substantially setting for large-scale segmented It is standby, a large amount of manual operations are needed in treatment process, risk is high, and inefficiency.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of structure is simple, design rationally, make With convenient slag micro powder equipment.
To achieve the above object, the technical solution adopted by the present invention is that: it include crusher, pulverizer, elevator one, material Storehouse one, frequency conversion feeding device, ultra-fine ball mill, elevator two, feed bin two, classifying equipoment, cyclone collector, pulse dust collector, Air-introduced machine, air compressor and feed back screw;The pulverizer is connect with crusher;The pulverizer and elevator One bottom connection;The top of the elevator one is connect with feed bin one;The bottom of the feed bin one is fed equipped with frequency conversion Device;The frequency conversion feeding device is connect with ultra-fine ball mill;The tail portion of the ultra-fine ball mill is connect with elevator two; The side of elevator two is arranged in the feed bin two;The bottom of the feed bin two is connect with classifying equipoment;The classification The top of equipment is connect with cyclone collector;The lower section of the classifying equipoment is connect with feed back screw;The feed back The other end of screw is connect with ultra-fine ball mill;The cyclone collector is connect with pulse dust collector;The pulse The side of deduster is connect with air-introduced machine;The other side of the pulse dust collector is connect with air compressor.
Preferably, the crusher is jaw crusher;The crusher includes rack, pressing plate, side plate, lining Plate, mandrel, dynamic jaw, drift, eccentric shaft, connecting rod, belt wheel, thrust board support, forward thrust plate and rear thrust plate, pull rod, spring;Institute The top for the rack stated is equipped with pressing plate;Side plate is equipped between the rack and liner plate;The top of the liner plate is equipped with the heart Axis;The outer wall of the mandrel is equipped with dynamic jaw;The lower section of the dynamic jaw is equipped with drift;The two sides pair of the thrust board support Claim to be equipped with forward thrust plate and rear thrust plate;The top of the thrust board support is equipped with eccentric shaft;The outside of the eccentric shaft Equipped with several connecting rods;The outer wall of the eccentric shaft is equipped with belt wheel;The belt wheel and dynamic jaw cooperate;The thrust plate The bottom of support is equipped with pull rod;The tail end of the pull rod is equipped with spring.
Preferably, the ultra-fine ball mill is twin-tub ball mill, the diameter of interior bucket is the 1/3-1/2 of outer barrel diameter; And interior bucket is opposite with the direction of rotation of outer barrel.
Preferably, the ultra-fine ball mill is two-part ball mill, the last period is big ball ball mill, latter Duan Wei little Ball ball mill;Either the last period is bead ball mill, and latter section is mixing and ball milling machine.
Preferably, the bottom of the cyclone collector is equipped with ash releasing tube;Valve is equipped at the ash releasing tube;It is described Ash discharge nozzle be equipped with filter screen.
Preferably, setting in the pulse dust collector, there are two dust settling pockets;And it is set at the top of the pulse dust collector There is impulse electromagnetic valve.
Preferably, the bottom of the feed back screw be equipped with weighing device, feed back screw be it is collapsible, on Half collects feed back, and lower half, which weighs and sees feed back off, eats heart processing.
Preferably, the bottom of the classifying equipoment is equipped with discharging control valve door, the discharging control valve door top Equipped with filter device, the filter device is plug-in type multiple filtration web plate, convenient for disassembly and assembly, is conducive to cleaning.
Preferably, the conveyer belt inside the elevator one is equipped with hopper.
Preferably, the side at two top of elevator one and elevator is equipped with driving device;The driving Device is motor.
Preferably, the inlet of the ultra-fine ball mill is equipped with interface change-over device, for switching frequency conversion charging dress It sets, the connector of feed back screw.
When operation of the present invention, big steel slag is crushed by crusher, then is crushed again by pulverizer, passes through elevator One will smashed material be sent into feed bin one in, by stirring after enter frequency conversion feeding device, afterwards enter ultra-fine ball mill in into Row grinding, the material after grinding are sent into feed bin two by elevator two, are sent into grader after collecting, and grader will close The material of lattice is sent into cyclone collector;Underproof material is sent into ultra-fine ball mill by feed back screw and is added again Work;Material after pulse dust removal by discharging in cyclone collector.
After adopting the above structure, the invention has the following beneficial effects: slag micro powder equipment of the present invention, structure design are closed Reason, easy to operate, flexibility is good, and stability is high, can the processing of midway return, the quality of processing discharging can be improved, and will not make At the waste of material, all automation processing reduces human cost, while can avoid the fault of manual operation bring, process Change, the process equipment of integral type is conducive to improve processing efficiency, the present invention has structure simple, setting rationally, low manufacture cost The advantages that.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.
Fig. 1 is schematic diagram of the invention;
Fig. 2 is the schematic diagram of crusher in the present invention;
Description of symbols:
Crusher 1, pulverizer 2, elevator 1, feed bin 1, frequency conversion feeding device 5, ultra-fine ball mill 6, elevator 27, material Storehouse 28, classifying equipoment 9, cyclone collector 10, pulse dust collector 11, air-introduced machine 12, air compressor 13, feed back screw 14, rack 101, pressing plate 102, side plate 103, liner plate 104, mandrel 105, dynamic jaw 106, drift 107, eccentric shaft 108, connecting rod 109, belt wheel 110, thrust board support 111, forward thrust plate 112, rear thrust plate 113, pull rod 114, spring 115.
Specific embodiment
The present invention will be further described below with reference to the drawings.
Referring to as depicted in figs. 1 and 2, present embodiment includes crusher 1, pulverizer 2, elevator 1, feed bin one 4, frequency conversion feeding device 5, ultra-fine ball mill 6, elevator 27, feed bin 28, classifying equipoment 9, cyclone collector 10, pulse dust removal Device 11, air-introduced machine 12, air compressor 13 and feed back screw 14;The pulverizer 2 is connect with crusher 1;Described Pulverizer 2 is connect with the bottom of elevator 1;The top of the elevator 1 is connect with feed bin 1;The feed bin 1 Bottom be equipped with frequency conversion feeding device 5;The frequency conversion feeding device 5 is connect with ultra-fine ball mill 6;The ultra-fine ball mill 6 tail portion is connect with elevator 27;The side of elevator 27 is arranged in the feed bin 28;The bottom of the feed bin 28 It is connect with classifying equipoment 9;The top of the classifying equipoment 9 is connect with cyclone collector 10;The lower section of the classifying equipoment 9 It is connect with feed back screw 14;The other end of the feed back screw 14 is connect with ultra-fine ball mill 6;The whirlwind Collector 10 is connect with pulse dust collector 11;The side of the pulse dust collector 11 is connect with air-introduced machine 12;The pulse The other side of deduster 11 is connect with air compressor 13.
Further, the crusher 1 is jaw crusher;The crusher 1 includes rack 101, pressing plate 102, side Liner plate 103, liner plate 104, mandrel 105, dynamic jaw 106, drift 107, eccentric shaft 108, connecting rod 109, belt wheel 110, thrust board support 111, forward thrust plate 112 and rear thrust plate 113, pull rod 114, spring 116;The top of the rack 101 is equipped with pressing plate 102; Side plate 103 is equipped between the rack 101 and liner plate 104;The top of the liner plate 104 is equipped with mandrel 105;Described The outer wall of mandrel 105 is equipped with dynamic jaw 106;The lower section of the dynamic jaw 106 is equipped with drift 107;The thrust board support 111 Two sides are symmetrically arranged with forward thrust plate 112 and rear thrust plate 113;The top of the thrust board support 111 is equipped with eccentric shaft 108; The outside of the eccentric shaft 108 is equipped with several connecting rods 109;The outer wall of the eccentric shaft 108 is equipped with belt wheel 110;Described Belt wheel 110 and dynamic jaw 106 cooperate;The bottom of the thrust board support 111 is equipped with pull rod 114;The pull rod 114 Tail end is equipped with spring 115.
Wherein, the ultra-fine ball mill 6 is twin-tub ball mill, and the diameter of interior bucket is the 1/3-1/2 of outer barrel diameter;And it is interior Bucket is opposite with the direction of rotation of outer barrel;The ultra-fine ball mill 6 is two-part ball mill, and the last period is big ball ball mill, after One section is bead ball mill;Either the last period is bead ball mill, and latter section is mixing and ball milling machine;The cyclone collector 10 bottom is equipped with ash releasing tube;Valve is equipped at the ash releasing tube;The ash discharge nozzle is equipped with filter screen;The pulse Dust settling pocket there are two being set in deduster 11;And the top of the pulse dust collector 11 is equipped with impulse electromagnetic valve;The feed back The bottom of screw 14 is equipped with weighing device, and feed back screw 14 is collapsible, the upper half collection feed back, lower half weighing And it sees feed back off and eats heart processing;The bottom of the classifying equipoment 9 is equipped with discharging control valve door, the discharging control valve Door top is equipped with filter device, and the filter device is plug-in type multiple filtration web plate, convenient for disassembly and assembly, is conducive to cleaning;It is described Elevator 1 inside conveyer belt be equipped with hopper;The side at 27 top of elevator 1 and elevator is equipped with Driving device;The driving device is motor;The inlet of the ultra-fine ball mill 6 is equipped with interface change-over device, is used for Switch the connector of frequency conversion feeding device 5, feed back screw 14.
When present embodiment operates, big steel slag is crushed by crusher, then is crushed again by pulverizer, is led to It crosses elevator one smashed material is sent into feed bin one, frequency conversion feeding device is entered after stirring, enter ultra-fine ball afterwards It being ground in grinding machine, the material after grinding is sent into feed bin two by elevator two, it is sent into grader after collecting, point Qualified material is sent into cyclone collector by grade machine;Underproof material is sent into ultra-fine ball mill by feed back screw In re-work;Material after pulse dust removal by discharging in cyclone collector.
After adopting the above structure, present embodiment has the beneficial effect that slag micro powder described in specific embodiment is set Standby, reasonable in design, easy to operate, flexibility is good, and stability is high, can the processing of midway return, processing discharging can be improved Quality, and not will cause the waste of material, all automation processing reduces human cost, while can avoid manual operation band Come fault, procedure, integral type process equipment be conducive to improve processing efficiency, the present invention have structure it is simple, setting close The advantages that reason, low manufacture cost.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention, It is intended to be within the scope of the claims of the invention.

Claims (10)

1. slag micro powder equipment, it is characterised in that: it includes crusher, pulverizer, elevator one, feed bin one, frequency conversion charging dress It sets, the compression of ultra-fine ball mill, elevator two, feed bin two, classifying equipoment, cyclone collector, pulse dust collector, air-introduced machine, air Machine and feed back screw;The pulverizer is connect with crusher;The pulverizer is connect with the bottom of elevator one;Institute The top for the elevator one stated is connect with feed bin one;The bottom of the feed bin one is equipped with frequency conversion feeding device;The frequency conversion Feeding device is connect with ultra-fine ball mill;The tail portion of the ultra-fine ball mill is connect with elevator two;The feed bin two is set It sets in the side of elevator two;The bottom of the feed bin two is connect with classifying equipoment;The top of the classifying equipoment and rotation The connection of wind collector;The lower section of the classifying equipoment is connect with feed back screw;The feed back screw it is another End is connect with ultra-fine ball mill;The cyclone collector is connect with pulse dust collector;The side of the pulse dust collector with Air-introduced machine connection;The other side of the pulse dust collector is connect with air compressor.
2. slag micro powder equipment according to claim 1, it is characterised in that: the crusher is jaw crusher;Institute The crusher stated includes rack, pressing plate, side plate, liner plate, mandrel, dynamic jaw, drift, eccentric shaft, connecting rod, belt wheel, thrust plate branch Seat, forward thrust plate and rear thrust plate, pull rod, spring;The top of the rack is equipped with pressing plate;Between the rack and liner plate Equipped with side plate;The top of the liner plate is equipped with mandrel;The outer wall of the mandrel is equipped with dynamic jaw;The lower section of the dynamic jaw Equipped with drift;The two sides of the thrust board support are symmetrically arranged with forward thrust plate and rear thrust plate;The thrust board support Top is equipped with eccentric shaft;The outside of the eccentric shaft is equipped with several connecting rods;The outer wall of the eccentric shaft is equipped with belt wheel;It is described Belt wheel and dynamic jaw cooperate;The bottom of the thrust board support is equipped with pull rod;The tail end of the pull rod is equipped with spring.
3. slag micro powder equipment according to claim 1, it is characterised in that: the ultra-fine ball mill is twin-tub ball milling Machine, the diameter of interior bucket are the 1/3-1/2 of outer barrel diameter;And interior bucket is opposite with the direction of rotation of outer barrel.
4. slag micro powder equipment according to claim 1, it is characterised in that: the ultra-fine ball mill is two-part ball milling Machine, the last period are big ball ball mill, and latter section is bead ball mill;Either the last period is bead ball mill, and latter section is mixed Close ball mill.
5. slag micro powder equipment according to claim 1, it is characterised in that: the bottom of the cyclone collector is equipped with row Ash pipe;Valve is equipped at the ash releasing tube;The ash discharge nozzle is equipped with filter screen.
6. slag micro powder equipment according to claim 1, it is characterised in that: removed there are two being set in the pulse dust collector Dirt bag;And the top of the pulse dust collector is equipped with impulse electromagnetic valve.
7. slag micro powder equipment according to claim 1, it is characterised in that: the bottom of the feed back screw is equipped with Weighing device, feed back screw be it is collapsible, the upper half collects feed back, and lower half, which weighs and sees feed back off and eat heart, to be added Work.
8. slag micro powder equipment according to claim 1, it is characterised in that: the bottom of the classifying equipoment is equipped with discharging Control valve, the discharging control valve door top are equipped with filter device, and the filter device is plug-in type multiple filtration net Plate.
9. slag micro powder equipment according to claim 1, it is characterised in that: on the conveyer belt inside the elevator one Equipped with hopper.
10. slag micro powder equipment according to claim 1, it is characterised in that: the inlet of the ultra-fine ball mill is set There is interface change-over device.
CN201710690465.8A 2017-08-14 2017-08-14 Slag micro powder equipment Withdrawn CN109382191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710690465.8A CN109382191A (en) 2017-08-14 2017-08-14 Slag micro powder equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710690465.8A CN109382191A (en) 2017-08-14 2017-08-14 Slag micro powder equipment

Publications (1)

Publication Number Publication Date
CN109382191A true CN109382191A (en) 2019-02-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710690465.8A Withdrawn CN109382191A (en) 2017-08-14 2017-08-14 Slag micro powder equipment

Country Status (1)

Country Link
CN (1) CN109382191A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111804391A (en) * 2020-06-24 2020-10-23 程雅雯 Special gravel manufacturing device for sand prevention and thin production of heavy oil well
EP4219017A1 (en) * 2022-01-28 2023-08-02 EcoUp Oyj Method of pulverizing waste material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111804391A (en) * 2020-06-24 2020-10-23 程雅雯 Special gravel manufacturing device for sand prevention and thin production of heavy oil well
EP4219017A1 (en) * 2022-01-28 2023-08-02 EcoUp Oyj Method of pulverizing waste material

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Application publication date: 20190226

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