CN101065505A - Abrasive material made of atomized slag, manufacturing facility and method for the same - Google Patents
Abrasive material made of atomized slag, manufacturing facility and method for the same Download PDFInfo
- Publication number
- CN101065505A CN101065505A CNA2005800401082A CN200580040108A CN101065505A CN 101065505 A CN101065505 A CN 101065505A CN A2005800401082 A CNA2005800401082 A CN A2005800401082A CN 200580040108 A CN200580040108 A CN 200580040108A CN 101065505 A CN101065505 A CN 101065505A
- Authority
- CN
- China
- Prior art keywords
- slag
- abrasive material
- abrasive
- gas
- ball
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
- C09K3/1427—Abrasive particles per se obtained by division of a mass agglomerated by melting, at least partially, e.g. with a binder
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Details (AREA)
Abstract
The present invention relates to slag balls for an abrasive material, and a facility and method for manufacturing the same.More specifically, the present invention relates to slag balls which can be utilized as an abrasive material for blast cleaning and are prepared by atomizing waste steel-making slag (converter slag or electric furnace slag) remaining after steel-making from steel making processes in iron mills. The above object can be accomplished by the provision of an abrasive material prepared by atomizing converter or electric furnace slag, and having a particle diameter of 0.1 to 2.0 mm and Mohs hardness of 6.5 to 8.0. The abrasive material prepared by special processing of melted steel-making slag in accordance with the present invention and manufacturing method thereof provide various advantages such as no need for a breaking step as needed in conventional methods using slag, high hardness, improved surface roughness of the workpiece to be abraded due to uniform particle size, easy recovery and re-usability due to magnetism, and remarkably reduced generation of dust.
Description
Technical field
The equipment and the method that the present invention relates to be used for the slag ball of abrasive material and be used to make this slag ball.More particularly, the present invention relates to the slag ball, described slag ball can be with the abrasive material that acts on shot blasting, and prepares by efflorescence depleted copper smelter slag (converter slag or electric-furnace slag), this depleted copper smelter slag in iron work after steelmaking process steel-making remnants.
Background technology
Shot blasting refers to surface-conditioning, comprises by means of by with hard abrasive, and for example the collision particulate kinetic energy that produced to the surface of sand or steel ball high-velocity jet is denuded working face or removed aging paint or scale from working face.
According to spray regime, shot blasting is divided into 1 substantially) utilize the F.D. of high-pressure air, 2) utilize water and the abrasive material wet blast(ing) (being also referred to as liquid honing) that is liquid phase, 3) utilize the centrifugal air blast of the centrifugal force of swiveling wheel rapidly, with 4) the vacuum air blast, this vacuum drums bellows chamber is drawn together abrasive blasting, simultaneously by utilizing vacuum to reclaim abrasive material and dust.
According to the material that constitutes abrasive material, the current abrasive material that is utilized in shot blasting can be categorized into: the metal abrasives and the non-metallic abrasive that is used for sandblasting that are used for shot peening.
As the shot-peening abrasive in the above-mentioned abrasive material, for example shot (Korean Patent Registration No.10-0420127) has been proposed, steel ball (the open No.1983-0001153 of Korean Patent), shape control shot (the open No.2001-0020307 of Korean Patent), rare earth metal (the open No.2003-0048032 of Korean Patent), cerium Base Metal (the open No.2004-0002949 of Korean Patent), α aluminum metal (the open No.1997-0707253 of Korean Patent), steel sand, the steel line of cut, SUS ball, SUS line of cut and aluminium line of cut.
Compare with non-metallic abrasive, metal abrasives advantageously presents good wearing quality and abrasion efficient.But, metal abrasives has some shortcomings, for example obviously expensive production unit cost, be that production unit cost is higher 10 to 70 times than non-metallic abrasive, and need special facture to be suitable for the sandblast machine of the characteristic of respective material, thereby the scope of using and using of metal abrasives is narrowed down, and limited the use in the abrasion product that needs special surface to handle.
On the other hand, as non-metallic abrasive, garnet (the open No.2004-0050607 of Korean Patent) has been proposed, silicon carbide (the open No.1999-0007593 of Korean Patent), multi-usage sand (the open No.2000-0060632 of Korean Patent), plastic material (the open No.1980-0001577 of Korean Patent), sand blasting-used sand, copper (Cu) slag, lapis amiridis, granulated glass sphere, porcelain bead, powder emery and silicon carbide (SiC).
But, in non-metallic abrasive, the mineral abrasive that from natural mineral, extracts, for example sand blasting-used sand exists for example loss of natural resources and the problem of environmental disruption, thereby has limited the use of non-metallic abrasive.Similarly, other abrasive material has for example restriction of the expensive and high production cost of raw material.
In order to overcome and the resource acquisition relative restrictions, the open No.2003-0080207 of Korean Patent proposes: utilize the method for copper slag as abrasive.This technology is quite inspirer and likely from the viewpoint of refuse recirculation, but since for example the corrodibility of the high unit price of product, little hardness, workpiece poor roughness, copper slag after shot peening, after shot peening, produce a large amount of dust and can not reuse, so the copper slag does not almost arouse attention as the application of abrasive.
Thereby, in order to overcome the shortcoming that conventional abrasives had that is used for shot blasting, has the demand that the following abrasive material that requires is satisfied in development in the art: 1) enough hardness, 2) workpiece high roughness after shot peening, 3) enough stability is not so that cause the corrosion of workpiece, 4) when shot peening not because the dust that splits and produced of abrasive material, 5) can use repeatedly and 6) can form by waste material, so that make environmental damage and destroy minimum.
Summary of the invention
Technical problem
Therefore, consider that the problems referred to above have made the present invention, and the purpose of this invention is to provide a kind of non-metallic abrasive and the equipment and the method that are used to make this non-metallic abrasive, this non-metallic abrasive has enough hardness and roughness, thereby has the abrasion efficient that to compare with metal abrasives, can not cause the corrosion of workpiece, can not produce dust and reusable.
Another object of the present invention provides a kind of non-metallic abrasive and is used to make the equipment and the method for this non-metallic abrasive, and this non-metallic abrasive is by utilizing waste steel slag manufacturing, thereby helps environment protection significantly.
Another purpose of the present invention provides a kind of abrasive material with single-size size, and this abrasive material can easily be used in any sandblast apparatus.
Technical solution
According to an aspect of the present invention, above-mentioned and other purpose can realize that this abrasive material prepares by efflorescence converter slag or electric-furnace slag by a kind of abrasive material is provided, and has 0.1 to 2.0mm particle diameter and 6.5 to 8.0 Mohs' hardness.
At this, converter slag or electric-furnace slag preferably comprise the CaO of 14-63wt%, the Fe of 22-45wt%
2O
3, 10-20wt% SiO
2, 6-10wt% MgO, less than the FeO of 3wt%, less than the Al of 5.5wt%
2O
3Other unavoidable impurities with surplus.
Abrasive material preferably have represent as following equation, the uniformity coefficient less than 1.3:
Uniformity coefficient (UC)=P
60/ P
10
P wherein
60The size of mesh opening that the sample of expression 60% has passed through, and P
10The size of mesh opening that the sample of expression 10% has passed through.
Abrasive material is effective at 0.4 to 2.0mm particle diameter.
According to a further aspect of the invention, a kind of equipment that is used to make abrasive material is provided, comprise the inder pot that is used to hold and discharge the slag of fusing, be used for of short duration storage from the slag of the fusing of inder pot discharge and the funnel of this slag of discharge, with be used for the gas jet of jet flow stream forward, make the slag of the described fusing of discharging from described funnel under the kinetic energy effect of gas, to spray and to carry.
Preferably, this equipment also comprises the cooling fence that is used for injection water or steam, so that the slag that cooling is fed forward by the gas that sprays from gas jet.
Preferably, this equipment also comprises conveyance and particle size screening plant, and this conveyance is used to shift the slag that is transferred, and this particle size screening plant is used for slag is classified into the required particle size of abrasive material.
Effectively, the gas injection nozzle of making this equipment is the double-stage nozzle that is made of nozzle up and down.
According to another aspect of the invention, a kind of method of making abrasive material is provided, may further comprise the steps: the slag of discharging fusing; By high velocity gas stream the pulverized slag of discharging is changed into fine; Fine with pulverizing is cooled to solid slag ball; With refrigerative slag ball is filtered into abrasive material with particle size of 0.1 to 2.0mm.
Beneficial effect
According to the present invention, the abrasive material and this abrasive material manufacture method that obtain provide various advantages by the special processing of the copper smelter slag of fusing, for example do not need as in the traditional method of using slag, need the same interrupt step, high hardness, because the caused surfaceness of waiting to denude the raising of workpiece of homogeneous granules size, owing to caused easy recovery of magnetic and reusability with reduce the generation of dust significantly.
In addition, according to the present invention, because the useless copper smelter slag of industry can be changed into can be as material abrasive material recirculation, environmental sound, so following advantage also is provided, for example: saving is used for the required overhead cost of slag treatment in the ironmaking course of processing, make environmental pollution drop to minimum, relax the deficiency of land reclamation etc.
Description of drawings
In conjunction with the accompanying drawings,, will more be expressly understood above and other objects of the present invention, feature and other advantage by following detailed description, wherein:
Fig. 1 is the equipment that is used to make according to abrasive material of the present invention.
Embodiment
Now the present invention will be described in more detail.
Abrasive material according to the present invention is prepared by efflorescence converter slag or electric-furnace slag, and this slag has the following ingredients of listing as in the following form 1 usually, but according to the kind of prepared steel, composition has some differences.
Form 1
| Composition | CaO | Fe 2O 3 | SiO 2 | MgO | FeO | Al 2O 3 |
| Content (wt%) | 14-63 | 22-45 | 10-20 | 6-10 | ≤3 | ≤5.5 |
Slag ball with this composition can comprise different types of compound phase, for example 2CaOFe therein
2O
3, 3CaOFe
2O
3, MgOAl
2O
3And 3CaOSiO
2This compound phase normally stable and present high rigidity.
In particular, at compound phase MgOAl in mutually
2O
3Be the highly stable phase that is called as spinel, thereby and help to improve the hardness of slag ball widely.Therefore, the slag ball of Li Yonging presents very high hardness value in the present invention, i.e. 6.5 to 8.0 Mohs' hardness and 500 to 700 Vickers' hardness.Therefore, the slag ball is being ejected under the workpiece situation of being noted, because the high rigidity of slag ball,, for example is being present in the rust on the workpiece surface or films so can denude the surface of workpiece or can easily remove impurity.
When blowing to the slag ball on the workpiece, according to the size of slag ball, the uneven size of slag ball causes the uneven size of the deflation vestige of workpiece, thereby causes the roughness of non-constant.In addition, also may there be limitation in the heterogeneity of slag ball particle size in the use of air-blast device, thereby and needs the homogeneous granules size.
Therefore, because lower uniformity coefficient applies uniform abrasive effect, so need have as following equation 1 uniformity coefficients represented, less than 1.3 as the slag ball of abrasive material of the present invention:
Uniformity coefficient (UC)=P
60/ P
10(equation 1)
P wherein
60The size of mesh opening that the sample of expression 60% has passed through, and P
10The size of mesh opening that the sample of expression 10% has passed through.If all sample has identical particle size, then this uniformity coefficient equals 1.
In addition, in the collision that obtains under the suitable kinetic energy between workpiece and the slag ball, the slag ball preferably has 3.2 to 4.0g/cm
3Density and 0.1 to 2.0mm diameter.More preferably, the diameter Distribution of slag ball 0.4 and 2.0mm between so that realize more regular abrasive surfaces.
Prepare to satisfy the slag ball 1 of above-mentioned requirements) have high hardness; 2) do not comprise a large amount of dust and do not have friability; cause not producing substantially dust; 3) thus can use repeatedly; 4) because the homogeneous granules diameter; so can improve the roughness and 5 of workpiece) form by waste material, thus be favourable from the environment protection viewpoint.
After this, will equipment and the method that be used to make the slag abrasive be described with reference to figure 1.
As can seeing from Fig. 1, the slag of the fusing of discharging from converter or electric furnace is accommodated in the inder pot 1, and this inder pot 1 is for holding the container of slag.Then, the slag 2 that is contained in the fusing in the inder pot 1 is introduced into funnel 3, this funnel 3 flows the slag of fusing evenly and simultaneously to be used to the constant flow rate of the slag of keeping fusing, and the slag that is used to make fusing toppling over side and can fall with unfolded state largo at funnel 3.
In order to control flowing of slag, make slag in funnel 3, sufficiently to stop and can discharge reposefully simultaneously, the exit angle of the relief outlet of funnel 3 is preferably with respect to becoming 10 to 60 ° under the horizontal alignment.
Discharge and the slag that falls has dropped on the inlet zone of the gas that comes out from nozzle ejection or gas/water mixture, then with gas or the collision of gas/water mixture from funnel 3.The double-stage nozzle that the nozzle that is used for jet flow stream or gas/water mixture preferably is made of nozzle 4 and 5 up and down.Upper spray nozzle 4 is used for the kinetic energy by means of jet flow stream or gas/water mixture, and the pulverized slag of the fusing that falls is broken into fine, and fine that will obtain simultaneously is transported to stack up yard position (pilingyard site).And down nozzle 5 is used to assist upper spray nozzle 4, thereby will be not be transported to the stack up yard position by the gas that ejects from upper spray nozzle 4 or gas/water mixture and the pulverized slag that falls is broken into final size, simultaneously the slag of pulverizing is transported to this stack up yard position.
Since to the gas injection angle of double-stage nozzle widely with thorough research, present inventor confirms: gas jet is mounted to being effective with respect to 0 to 45 ° angle jet flow stream on the horizontal alignment for the size control of slag ball and their steady conveying.Therefore, this double-stage nozzle preferably is mounted respectively the angle jet flow stream with 0 to 45 °.
In addition, the gas that ejects from double-stage nozzle sprays with 100 to 1050mmAg pressure of blast, so that effectively control the particle size of slag ball and their steady conveying.
Can also comprise jet of water nozzle (not shown) in the both sides of double-stage nozzle.The jet of water nozzle by supply with the water of the mixture of the gas that ejects from double-stage nozzle, and quenching atomizing slag drips.
By the medium transport of the injection stream of gas or gas/water mixture in the process of stack up yard position, slag drips 6 by cooling fence 7 zones, wherein water or steam come out from this area spray.Slag drips 6 also be cooled fence 7 and quenches and be cured into the slag ball that is suitable for use as abrasive material.
These slag balls of solidified drop to the stack up yard position in course of conveying.The slag ball that falls is by conveyance, for example chapelet 8 or travelling belt and be transported to screen cloth 9, and at these screen cloth 9 places, the slag ball is hanked by finishing screen and is had slag abrasive as the desired particle size of the present invention.
Be used for pattern of the present invention
After the converter refining process, the slag of discharging from converter is accommodated in the inder pot, utilizes waggon then and is transported to treatment zone.
The inder pot of carrying by overhead crane moved to once more funnel directly over, and be tilted suitable angle, thereby the slag of fusing be discharged in the funnel.The velocity of discharge of slag of fusing is set in the scope between 1000 to 1500kg/min.In order to keep the constant velocity of discharge, this inder pot is inclined to the remaining quality that makes according to slag, and it is precipitous that the pitch angle of inder pot becomes gradually.
The angle of the relief outlet of funnel is with respect to being fixed on 30 ° under the horizontal alignment.The gas injection angle of double-stage nozzle is with respect to being separately fixed at 24 ° (for upper spray nozzles) and 30 ° (for following nozzle) on the horizontal alignment.
At this, inoperation jet of water nozzle, thereby jet flow stream only.The cooling fence is installed in apart from the distance of the front end 10 to 15m of jet of water nozzle, and the slag of being opened by gas dispersion and carrying that makes it possible to quench drips.
Utilize payloader and chapelet at stack up yard position refrigerative slag ball and be transported to screen cloth.This screen cloth is used to screen the slag ball with 0.4 to 2.0mm particle size, and these slag balls are used as abrasive material then.
On inspection, obtain the uniformity coefficient (UC) of abrasive material, UC is 1.22, and corresponding to the preferable range of UC, the preferable range of this UC is used for using in the present invention.
In addition, X-ray diffraction (XRD) analytical results of abrasive material shows: abrasive material does not comprise free lime substantially.Therefore, do not proved not because hydration, though with the prolongation storage condition of water under caused abrasive material difference.
In addition, in order to determine whether abrasive material causes water or soil pollution, has carried out the heavy metal leaching test.The result is shown in the form 2.
Form 2
| Be subjected to prescribed material | Pb | Cu | As | Hg | Cd | Cr | CN |
| Acceptable level (ppm) | Less than 3.0 | Less than 3.0 | Less than 1.5 | Less than 0.005 | Less than 0.3 | Less than 1.5 | Less than 1.0 |
| Test-results (ppm) | Do not detect | Do not detect | Do not detect | Do not detect | Do not detect | Do not detect | Do not detect |
As can seeing, can not leach heavy metal according to abrasive material of the present invention from form 2.
Following form 3 illustrate according between abrasive material of the present invention and the traditional abrasive material on characteristic relatively result.
Form 3
| Project | Of the present invention | The copper slag | Silica sand | Garnet | Granulated glass sphere | Steel ball |
| True specific gravity | 3.54 | 3.65 | 2.62 | 4.20 | 2.60 | 7.20 |
| Mohs' hardness | 7.5 | 6.5 | 5.5 | 7.5 | 5.0 | 8.5 |
| Rockwell hardness (HRC) | 43 | 37 | 30 | 40 | 28 | 50 |
| Roughness (quality) | Very good | Well | Moderate | Well | Moderate | Very good |
| The unit cost of product (per ton) | 3 | 6 | 4.5 | 35 | 20 | 100 |
| Reusability | 2-3 time | Not reproducible use | Not reproducible use | 3-4 time | Not reproducible use | 10-12 time |
| Equipment improvement | Easily | Easily | Easily | Easily | Moderate | Difficulty |
| The waste material classification | Common | Special | Special | Special | Special | Special |
*Production unit cost (per ton): the cost of steel ball that will be the most expensive is taken as 100
As shown in Table 3, slag ball according to the present invention has the steel ball of being lower than (about 7.2g/cm
3) true specific gravity (3.54g/cm
3), but can find out because the natural sand that is widely used as the shot-peening material has 2.62 true specific gravity, so slag ball of the present invention has the good characteristic as abrasive material.In addition, slag ball of the present invention is compared with steel ball and do not present significant difference on hardness, and makes the roughness of workpiece after deflation similar to the level of steel ball.In addition, as can seeing from form 2, slag ball of the present invention can not leach deleterious heavy metal, thereby can be easily as common waste recovery.In addition, steel ball or shot-peening can not carry out shot blasting by the sandblast apparatus that adopts sand, and utilize the equipment improvement of the many parts of steel ball shot peening needs of sandblast apparatus.But the slag abrasive material of Shi Yonging is not subjected to the restriction of shotblast unit substantially in the present invention.
In particular, when with in sandblasting, use equally but expensive garnet when comparing, the good characteristic of this slag abrasive material is tangible.Compare with garnet, the slag ball has low slightly proportion, but has high hardness, thereby causes the extraordinary surfaceness of the workpiece handled.
Abrasive for various projections utilizes shotblast unit, and assessment is according to the wearing character of abrasive size.
For this reason, sand, slag abrasive material and steel ball are classified into 0.1 to 0.4mm, 0.4 to 1.0mm and 1.0 to 2.0mm size-grade distribution respectively, and they are used for assessment.In this experiment, use the air cloudburst test equipment of making by the applicant (model ASP-20).Utilize this equipment, with the 1000g corresponding abrasive with the jet length of 30cm, be ejected into respectively on the same corrosive steel plate with 70 to 80m/sec jet velocity simultaneously.Thereby the result who measures is shown in the form 4.
The result shows: for all three kinds of abrasives, expression is better than in smaller particles in bigger particle by the surfaceness of corresponding abrasive abrasive degree.In addition, on inspection, according to the surfaceness of the kind of abrasive, surfaceness is steel ball, slag abrasive material and sand from being up to minimum order.Therefore, can find out that slag abrasive material according to the present invention is more effective than the sand of tradition use, and have the grinding effect that to compare with the grinding effect of steel ball.
Form 4
| Project | Particle size distribution (mm) | Surfaceness () | Abrasion area (m 2/hr) | Dust (the mg/m that produces 3) |
| Sand-1 | 0.1-0.4 | 35 | 9.0 | 250 |
| Sand-2 | 0.4-1.0 | 50 | 5.0 | 350 |
| Sand-3 | 1.0-2.0 | 70 | 2.0 | 460 |
| Slag abrasive-1 | 0.1-0.4 | 60 | 13 | 85 |
| Slag abrasive-2 | 0.4-1.0 | 80 | 8.0 | 110 |
| Slag abrasive-3 | 1.0-2.0 | 145 | 3.5 | 145 |
| Steel ball-1 | 0.1-0.4 | 75 | 19 | 13 |
| Steel ball-2 | 0.4-1.0 | 90 | 11 | 15 |
| Steel ball-3 | 1.0-2.0 | 220 | 5.0 | 20 |
In addition, prove that the wear area in smaller particles is obviously greater than the wear area in larger particles for three kinds of all abrasives.In wear area, also there are differences, and the slag abrasive material presents bigger wear area than the sand with same size according to the abrasive kind.
In particular, the dust that produces in wear process is the pollution substance that can influence workers ' health strongly.Therefore, there is dust monitor to be installed in, produces to measure dust apart from 5m place, shot blasting working space.As a result, sand is by the dust of the remarkable quantity that produces that splits in the collision of wearing surface, thereby produces a large amount of dust, and with the sand facies with same size relatively, the slag abrasive material with higher hardness shows and has reduced by 1/3 dust.
Therefore, along with the size change of projection abrasive material is big, surfaceness uprises, and processing area diminishes and the generation of dust becomes big.For wearing and tearing efficient, compare with sand facies, the slag abrasive material has better result.
Although for illustrative purpose has disclosed the preferred embodiments of the present invention, those skilled in the art will recognize that to have various modification, interpolation and replacement, and can not depart from as the disclosed scope and spirit of the present invention of claims.
Claims (9)
1. abrasive material of being prepared by atomizing converter slag or electric-furnace slag, this abrasive material have 0.1 to 2.0mm particle diameter and 6.5 to 8.0 Mohs' hardness.
2. abrasive material as claimed in claim 1, wherein said converter slag or electric-furnace slag comprise the CaO of 14-63wt%, the Fe of 22-45wt%
2O
3, 10-20wt% SiO
2, 6-10wt% MgO, less than the FeO of 3wt%, less than the Al of 5.5wt%
2O
3Other unavoidable impurities with surplus.
3. abrasive material as claimed in claim 1, wherein said abrasive material have as following equation 1 uniformity coefficients expression, less than 1.3:
Uniformity coefficient (UC)=P
60/ P
10(equation 1)
P wherein
60The size of mesh opening that the sample of expression 60% has passed through, and P
10The size of mesh opening that the sample of expression 10% has passed through.
4. abrasive material as claimed in claim 1, wherein said abrasive material has 0.4 to 2.0mm particle diameter.
5. equipment that is used to make by the made abrasive material of atomized slag comprises:
Inder pot, this inder pot are used to hold and discharge the slag of fusing;
Funnel, this funnel are used for storing momently slag and this slag of discharge from the described fusing of described inder pot discharge; With
Gas jet, this gas jet is used for jet flow stream forward, makes the slag of the described fusing of discharging from described funnel can be under the kinetic energy effect of gas injected and carry.
6. equipment as claimed in claim 5 also comprises:
The cooling fence, this cooling fence is used for injection water or steam, so that the described slag that cooling is fed forward by the gas that sprays from described gas jet.
7. equipment as claimed in claim 5 also comprises:
Conveyance, this conveyance are used to shift the described slag that is transferred; With
Particle size screening plant, this particle size screening plant are used for described slag is classified into the required particle size of described abrasive material.
8. equipment as claimed in claim 5, wherein said gas jet are the double-stage nozzle that is made of upper and lower nozzle.
9. method that is used to make the abrasive material of being made by atomized slag may further comprise the steps:
Discharge the slag of fusing;
By high velocity gas stream, the pulverized slag of described discharge is changed into fine;
Fine with described pulverizing is cooled to solid slag ball; With
Described refrigerative slag ball is filtered into abrasive material with particle size of 0.1 to 2.0mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20040096074 | 2004-11-23 | ||
| KR1020040096074 | 2004-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101065505A true CN101065505A (en) | 2007-10-31 |
Family
ID=36793264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800401082A Pending CN101065505A (en) | 2004-11-23 | 2005-10-06 | Abrasive material made of atomized slag, manufacturing facility and method for the same |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101194277B1 (en) |
| CN (1) | CN101065505A (en) |
| TW (1) | TWI390025B (en) |
| WO (1) | WO2006085712A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298551B (en) * | 2008-06-13 | 2011-11-16 | 中冶宝钢技术服务有限公司 | Preparation of steel slag derusting abrasive medium |
| CN103707204A (en) * | 2013-12-10 | 2014-04-09 | 安徽工业大学 | Method for sandblasting surface of workpiece by utilizing steelmaking converter slag |
| CN104141027A (en) * | 2014-07-25 | 2014-11-12 | 马钢(集团)控股有限公司 | Method for comprehensively utilizing air quenched slag of steel converter |
| CN104384176A (en) * | 2014-11-19 | 2015-03-04 | 晋江市冠兴建材有限责任公司 | Environment-friendly coal slag recovering and treating system |
| CN113046025A (en) * | 2021-03-31 | 2021-06-29 | 成渝钒钛科技有限公司 | High-titanium blast furnace slag nonmetal abrasive and preparation method thereof |
| CN115044349A (en) * | 2022-04-18 | 2022-09-13 | 江汉大学 | Non-metal abrasive for jet cleaning and preparation method thereof |
| CN115584239A (en) * | 2022-09-29 | 2023-01-10 | 浙江申联环保集团有限公司 | Method for producing non-metal abrasive by using industrial waste residues |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090193849A1 (en) * | 2006-06-14 | 2009-08-06 | Ecomaister Co., Ltd. | Method for stabilizing slag and novel materials produced thereby |
| KR101014400B1 (en) * | 2006-06-14 | 2011-02-15 | 주식회사 에코마이스터 | A method for stabilizing slag and novel materials produced thereby |
| KR101355460B1 (en) * | 2011-12-27 | 2014-01-29 | 주식회사 에코마이스터 | Silicon manganese slag ball and method for the same |
| KR101379452B1 (en) * | 2012-06-28 | 2014-04-04 | 주식회사 에코마이스터 | An atomizing apparatus of reducing slag for secondary refining furnace of steel manufacturing process |
| KR101379453B1 (en) * | 2012-06-28 | 2014-03-31 | 주식회사 에코마이스터 | Method for Controlling Particle Size of reduction slag ball for control an angle of inclination |
| WO2014061950A1 (en) * | 2012-10-19 | 2014-04-24 | 주식회사 에코마이스터 | Steelmaking slag atomizing system using waste heat |
| KR20140065562A (en) * | 2012-11-16 | 2014-05-30 | 주식회사 에코마이스터 | Method for stabilizing of dephosphorization slag generated by reduction dephosphorization process of carbon steel and mangan and stainless steel |
| CN105670563B (en) * | 2016-01-07 | 2018-06-12 | 上海亚都塑料有限公司 | A kind of preparation method of high wear-resistant corrosion-resistant composite grinding material |
| ES2615157B2 (en) * | 2017-03-16 | 2017-10-04 | Endesa Generacion, S.A. | ABRASIVE PRODUCT PREPARATION PROCEDURE |
| US20220332994A1 (en) * | 2021-04-14 | 2022-10-20 | Harsco Technologies LLC | Demetallized slag for abrasives and/or roofing granules and related methods |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337085A (en) * | 1980-09-30 | 1982-06-29 | Kennecott Corporation | Recovery of precious metals from spent alumina-containing catalysts |
| US5496392A (en) * | 1990-12-21 | 1996-03-05 | Enviroscience | Method of recycling industrial waste |
| US5273566A (en) * | 1993-01-26 | 1993-12-28 | International Environmelting Corporation | Process for producing an environmentally acceptable abrasive product from hazardous wastes |
| US5549059A (en) * | 1994-08-26 | 1996-08-27 | Minergy Corp. | Converting paper mill sludge or the like |
| JP3793261B2 (en) * | 1995-10-18 | 2006-07-05 | Ｊｆｅマテリアル株式会社 | Sharpening material manufacturing method and apparatus |
| KR19980084280A (en) * | 1997-05-22 | 1998-12-05 | 오옥수 | Cement based on steelmaking slag |
| JP3720622B2 (en) * | 1999-04-09 | 2005-11-30 | 株式会社星野産商 | Granules for shot blasting |
| KR20010046369A (en) * | 1999-11-12 | 2001-06-15 | 이구택 | Improvement Method of Consistency of Fresh-Concrete |
| WO2001088206A1 (en) * | 2000-05-19 | 2001-11-22 | Oksoo Oh | Method for recovering useful metal from slag generated in steel-making process while treating the slag |
-
2005
- 2005-05-06 KR KR1020050038101A patent/KR101194277B1/en active IP Right Review Request
- 2005-10-06 WO PCT/KR2005/003295 patent/WO2006085712A1/en active Application Filing
- 2005-10-06 CN CNA2005800401082A patent/CN101065505A/en active Pending
- 2005-10-28 TW TW94137769A patent/TWI390025B/en active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298551B (en) * | 2008-06-13 | 2011-11-16 | 中冶宝钢技术服务有限公司 | Preparation of steel slag derusting abrasive medium |
| CN103707204A (en) * | 2013-12-10 | 2014-04-09 | 安徽工业大学 | Method for sandblasting surface of workpiece by utilizing steelmaking converter slag |
| CN103707204B (en) * | 2013-12-10 | 2016-04-13 | 安徽工业大学 | A kind of Copper converter smelting slag that utilizes carries out the method for blasting treatment to surface of the work |
| CN104141027A (en) * | 2014-07-25 | 2014-11-12 | 马钢(集团)控股有限公司 | Method for comprehensively utilizing air quenched slag of steel converter |
| CN104141027B (en) * | 2014-07-25 | 2016-08-17 | 马钢(集团)控股有限公司 | A kind of method comprehensively utilizing steelmaking converter wind quenching slag |
| CN104384176A (en) * | 2014-11-19 | 2015-03-04 | 晋江市冠兴建材有限责任公司 | Environment-friendly coal slag recovering and treating system |
| CN113046025A (en) * | 2021-03-31 | 2021-06-29 | 成渝钒钛科技有限公司 | High-titanium blast furnace slag nonmetal abrasive and preparation method thereof |
| CN115044349A (en) * | 2022-04-18 | 2022-09-13 | 江汉大学 | Non-metal abrasive for jet cleaning and preparation method thereof |
| CN115584239A (en) * | 2022-09-29 | 2023-01-10 | 浙江申联环保集团有限公司 | Method for producing non-metal abrasive by using industrial waste residues |
| CN115584239B (en) * | 2022-09-29 | 2024-03-26 | 浙江申联环保集团有限公司 | Method for producing nonmetallic abrasive by utilizing industrial waste residues |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006085712A1 (en) | 2006-08-17 |
| KR101194277B1 (en) | 2012-10-29 |
| TW200621962A (en) | 2006-07-01 |
| KR20060057497A (en) | 2006-05-26 |
| TWI390025B (en) | 2013-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101065505A (en) | Abrasive material made of atomized slag, manufacturing facility and method for the same | |
| WO2008026404A1 (en) | Steel pipe internal-surface blasting apparatus, method of blasting steel pipe internal-surface and process for manufacturing steel pipe excelling in internal-surface surface property | |
| CN102791429B (en) | Blasting agent and blasting method | |
| CN201046415Y (en) | Apparatus for separating and recycling granulating slag iron | |
| CN1014996B (en) | Metal-making apparatus involving smelting reduction of metallic oxides | |
| CN110747302A (en) | Steel slag wind quenching device and steel slag granulating method | |
| CN101927422B (en) | Manufacture technology of steel wire cut pill | |
| CN110721977B (en) | Method for directly preparing active iron powder by utilizing slag generated by smelting reduction furnace | |
| US3150467A (en) | Hydraulic surface treating process and equipment | |
| CN211134301U (en) | White corundum abrasive material cylinder deironing equipment | |
| KR100536507B1 (en) | Abrasive, method and device for manufacturing abrasive | |
| JPS63207563A (en) | Grinding/polishing/cleaning method for die by electric discharge machine | |
| WO2013046854A1 (en) | Blasting device and blasting method | |
| KR20070105017A (en) | The method of abrasives manufacture using molten steel slag and the abrasives manufactured thereof | |
| JP5565826B2 (en) | Abrasive for blasting and method for producing the same | |
| CN108161753A (en) | The shot blasting method of surface of steel plate | |
| US3257759A (en) | Process for surface altering | |
| KR101406666B1 (en) | Apparatus for manufacturing slag bead and method for removing scale on hot rolled steel strip | |
| CN108374557A (en) | A kind of aluminum alloy pattern plate recoverying and utilizing method | |
| Tang et al. | Cleaning IF molten steel with dispersed in-situ heterophases induced by the composite sphere explosive reaction in RH ladles | |
| CN106041750A (en) | Vertical type shot blasting machine for conducting polishing and powder spraying on ship anchor chain | |
| JP3746962B2 (en) | Abrasive material and polishing method using the abrasive material | |
| JP4012344B2 (en) | Method for producing blast furnace slag fine aggregate | |
| KR20220022270A (en) | Abrasive material worked sludge | |
| KR101015805B1 (en) | Manufacturing method for the abrasive material |
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 |