CN104114969A - Device for manufacturing solidified slag, device for manufacturing coarse aggregate for concrete, method for manufacturing solidified slag, and method for manufacturing coarse aggregate for concrete - Google Patents

Device for manufacturing solidified slag, device for manufacturing coarse aggregate for concrete, method for manufacturing solidified slag, and method for manufacturing coarse aggregate for concrete Download PDF

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Publication number
CN104114969A
CN104114969A CN201380009214.9A CN201380009214A CN104114969A CN 104114969 A CN104114969 A CN 104114969A CN 201380009214 A CN201380009214 A CN 201380009214A CN 104114969 A CN104114969 A CN 104114969A
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CN
China
Prior art keywords
slag
mold
solidify
reversion
manufacturing installation
Prior art date
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Granted
Application number
CN201380009214.9A
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Chinese (zh)
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CN104114969B (en
Inventor
荻尾勇树
当房博幸
田惠太
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JFE Steel Corp
JFE Engineering Corp
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NKK Corp
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Publication of CN104114969A publication Critical patent/CN104114969A/en
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Publication of CN104114969B publication Critical patent/CN104114969B/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B3/00General features in the manufacture of pig-iron
    • C21B3/04Recovery of by-products, e.g. slag
    • C21B3/06Treatment of liquid slag
    • C21B3/08Cooling slag
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/14Waste materials; Refuse from metallurgical processes
    • C04B18/141Slags
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B5/00Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  slag 
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02Cooling
    • F27D15/0206Cooling with means to convey the charge
    • F27D15/0273Cooling with means to convey the charge on a rotary hearth
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/02Physical or chemical treatment of slags
    • C21B2400/022Methods of cooling or quenching molten slag
    • C21B2400/026Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/04Specific shape of slag after cooling
    • C21B2400/044Briquettes or moulded bodies other than sheets
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

This device 1 for manufacturing solidified slag has a plurality of metallic molds 5, each having a recess 5a into which molten slag 3 is poured, and manufactures solidified slag 18 by solidifying the molten slag 3 that has been poured into the recesses 5a. The device 1 is provided with a circulating mechanism 7 that causes the plurality of metallic molds 5 to circulate horizontally in a state in which the plurality of metallic molds 5 are brought close together and supported. The circulating mechanism 7 is provided with the following in order in the circulation direction: an air-cooled movement portion 9 that moves the metallic molds 5, in which the molten slag 3 has been poured into and retained in the recesses 5a, in the direction of circulation, and subjects the molten slag 3 held in the recesses 5a to air-cooling, solidifying the molten slag 3; an inverting discharge portion 11 that inverts the metallic molds 5 so that the recesses 5a face downwards, and discharges solidified slag 18; an inverted movement portion 13 that moves the inverted metallic molds 5in the inverted state; and a reinverting portion 15 that reinverts the inverted metallic molds 5 so that the recesses 5a face upwards.

Description

Solidify the manufacturing installation of slag manufacturing installation, the reinforcement of concrete coarse aggregate, the manufacture method of solidifying slag manufacture method and the reinforcement of concrete coarse aggregate
Technical field
The slag (being called molten slag below) that the present invention relates to make molten condition solidifies and the solidifying slag manufacturing installation, possess the above-mentioned manufacturing installation that solidifies the reinforcement of concrete coarse aggregate of slag manufacturing installation, use the above-mentioned manufacture method of solidifying slag manufacture method and the reinforcement of concrete coarse aggregate of solidifying slag manufacturing installation of slag (be called below and solidify slag) of manufacturing curdled appearance.
Background technology
For the molten slag producing in the refining procedure etc. of metal is solidified, be widely used and the cooling water of high pressure is sprayed onto to molten slag carries out the method for quenching or molten slag is positioned over to dry pit or slag field and in atmosphere, carries out the method for Slow cooling.
When molten slag is carried out to quenching, spray the cooling water of a large amount of high pressure, thereby to form the particle diameter with a large amount of pores be that sand shape below 5mm solidifies slag (so-called water granulated slag).On the other hand, molten slag is watered while carrying out Slow cooling to ground, thickness is several meters, and its fragmentation is made to the block slag (so-called slow cooling slag) that solidifies.
In recent years, along with solidifying the recycling of slag, realized replacement gravel etc. and will solidify slag being applied to the reinforcement of concrete coarse aggregate.In order to solidify slag, be applied to the reinforcement of concrete coarse aggregate, need to reduce pore in slag, the maximum of slag particle diameter is adjusted to 20mm left and right.Therefore, water granulated slag because pore is many and particle diameter is little, therefore cannot be applied to the reinforcement of concrete coarse aggregate in present stage; On the other hand, for slow cooling slag, the piece that is of a size of several meters is crushed to the chronic of 20mm left and right, efficiency is not high.
Therefore, few and be easy to broken solidify slag as the reinforcement of concrete coarse aggregate in order to obtain pore, the technology that the less mold of various uses solidifies molten slag has been proposed.While slag being solidified among little mold, can easily obtain the size that is greater than water granulated slag and is less than slow cooling slag, compare and can shorten the broken time with slow cooling slag, can easily obtain the desired slag that solidifies of 20mm left and right.
As solidify the device of slag with this little mold manufacture, for example, there is the continuous solidification device of disclosed slag in patent documentation 1.
In patent documentation 1 in the continuous solidification device of disclosed slag, 2 above metal molds processed are moved in a certain direction with loop connecting and with linearity, make it to solidify simultaneously to pouring into molten slag in mold, from mold, slag is solidified in discharge continuously.
In addition, as solidify another example of slag with little mold manufacture, for example, there is the treating apparatus of the iron metallurgical slag of recording in patent documentation 2.In the treating apparatus of the iron metallurgical slag of patent documentation 2, use turntable, make the casting plane in each casting container maintain all the time horizontal level, make casting container continuous horizontal on the track of curve move simultaneously, around multi-turn, each circle solidifies a small amount of slag, by repeatedly around carrying out a large amount of slags of lamination (referring to the 2nd page of hurdle, upper right of patent documentation 2).
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2003-207281 communique
Patent documentation 2: Japanese kokai publication sho 53-32828 communique
Summary of the invention
The problem that invention will solve
In the continuous solidification device of the slag described in patent documentation 1, with 2 of loop connectings with trussell, to a distolateral mold that is arranged in ring-type, pour into after molten slag, make it traveling priority to the other end of ring-type, thereby make mold reversion will solidify slag from mold at above-mentioned other end place, discharge, mold traveling priority in inverted status is returned above-mentioned one distolateral.
Above-mentioned, thisly with ring-type, connect linearly in 2 devices with trussell, the stroke of advancing and the stroke returning are identical length, therefore to pouring into molten slag in mold and making it time of mobile (stroke of advancing) and discharge is solidified slag and to move time of mold (stroke returning) with empty state identical.To pouring into molten slag in mold and making it the mobile time, be to make molten slag solidify the needed time, therefore will take this time to decide connection number and the translational speed of mold as benchmark.Therefore, the traveling time after mold reversion can produce waste.
In the treating apparatus of the iron metallurgical slag described in patent documentation 2, all the time with level, move casting container (mold), this device in order to make slag rapid solidification, reduce at every turn around time the thickness of cast layer, make casting container around the cast layer that repeatedly carrys out lamination multilayer, thereby obtain the cast layer of desired thickness.Therefore, except discharge reaches the piece slag of desired thickness, the recess that need to make casting container with state upward all the time repeatedly around during move horizontally, and in order to make to inject cast layer rapid solidification after slag and from blow air or steam on slag.In addition, cooling without any record for casting container, it is believed that: from casting container, discharge after piece slag, casting container keeps this state and the slag of casting.
Therefore,, if adopt the method and apparatus of patent documentation 2, exist and repeatedly around expending time in, be difficult to obtain efficiently the problem of coagulated mass slag.In addition, in patent documentation 2, to slag blow air or steam, so in slag, easily produce pore.
It should be noted that, need to carry out repeatedly around, during this period, casting container is not forced coolingly completely, thereby therefore often there is casting container, because the heat of high-temperature slag is out of shape, cause the problem that device can not continuous rotation.Further, as shown in the 1st figure of patent documentation 2, make the piece slag solidifying tilt and discharge from casting container to the footpath direction around direction, therefore center of gravity is with respect to around off-centring, easily make the whole disequilibrium of whirligig, be difficult to stably obtain coagulated mass slag, become problem.
The present invention completes in order to solve problem as above, the object of the present invention is to provide a kind of slag manufacturing installation that solidifies, and it can obtain the few and easy slag that solidifies that utilizes the broken particle diameter that is adjusted into 20mm left and right of pore efficiently.
In addition, the object of the present invention is to provide and possess the above-mentioned manufacturing installation that solidifies the reinforcement of concrete coarse aggregate of slag manufacturing installation, use the above-mentioned manufacture method of solidifying slag manufacture method and the reinforcement of concrete coarse aggregate of solidifying slag manufacturing installation.
For the means of dealing with problems
(1) a kind of slag manufacturing installation that solidifies, this solidifies slag manufacturing installation and has 2 above metal molds, this mold has the depressed part that can pour into molten slag, thereby described device be by make to pour into the molten slag of above-mentioned depressed part solidify manufacture solidify slag solidify slag manufacturing installation, wherein, this solidify slag manufacturing installation possess make above-mentioned 2 with trussell under the state that approaches and support along continuous straight runs around mobile around travel mechanism, above-mentioned possess around direction successively around travel mechanism edge: air-cooled moving part, this air-cooled moving part makes above-mentioned mold along moving around direction the molten slag pouring into is remained under the state in above-mentioned depressed part, the molten slag keeping in above-mentioned depressed part is carried out to air-cooled making it to be solidified, reversion discharge portion, this reversion discharge portion makes above-mentioned mold reverse according to above-mentioned depressed part mode downward, thereby will solidify slag, discharges, reversion moving part, this reversion moving part moves the above-mentioned mold after reversion under the state that keeps reversion, inversion portion again, this again inversion portion the above-mentioned mold in inverted status is reversed towards the mode of top again according to above-mentioned depressed part.
(2) as described in above-mentioned (1), solidify slag manufacturing installation, wherein, the shared length (angle) of above-mentioned air-cooled moving part surpasses 1/2 (180 degree) of the above-mentioned surround orbit overall length around travel mechanism (full angle 360 degree) and is less than 3/4 (270 degree).
(3) as described in above-mentioned (1) or (2), solidify slag manufacturing installation, wherein, thereby above-mentioned reversion discharge portion is by making above-mentioned mold towards around direction rotation, above-mentioned mold being reversed.
(4) as described in any one in above-mentioned (1)~(3), solidify slag manufacturing installation, wherein, above-mentioned reversion moving part possesses to the upper and lower surface of the above-mentioned mold of inverted status and sprays cooling medium and carry out cooling cooling device.
(5) as described in above-mentioned (4), solidify slag manufacturing installation, wherein, above-mentioned cooling device is that 300 ℃ of following modes are carried out cooling to above-mentioned mold according to the surface temperature that makes the above-mentioned mold back side.
(6) manufacturing installation for the reinforcement of concrete coarse aggregate, it possess in above-mentioned (1)~(5) described in any one solidify slag manufacturing installation, to utilize above-mentioned solidify the manufacture of slag manufacturing installation solidify that slag carries out broken impact grinding device and to utilizing above-mentioned impact grinding device to carry out the grading plant that slag carries out classification that solidifies after fragmentation.
(7) a kind of slag manufacture method of solidifying; its be use in above-mentioned (1)~(5) described in any one solidify slag manufacturing installation manufacture solidify slag solidify slag manufacture method; wherein; in the above-mentioned depressed part of above-mentioned mold, pour into molten slag; make the above-mentioned mold that pours into molten slag in above-mentioned depressed part around movement; simultaneously to pour into the molten slag of above-mentioned depressed part, carry out air-cooled, thereby the tabular slag that solidifies that is frozen into the thickness of 20mm~40mm is discharged in the reversion of above-mentioned mold.
(8) manufacture method for the reinforcement of concrete coarse aggregate, wherein, above-mentioned to utilizing (7) described slag that solidifies that solidifies the manufacture of slag manufacture method carries out fragmentation, and the slag that solidifies after fragmentation is classified into 5mm~20mm.
Invention effect
According to the present invention, a kind of slag manufacturing installation that solidifies can be provided, this solidify slag manufacturing installation can efficiently obtain pore few and easily by fragmentation be adjusted into 20mm left and right particle diameter solidify slag.
In addition, according to the present invention, can provide to possess the above-mentioned manufacturing installation that solidifies the reinforcement of concrete coarse aggregate of slag manufacturing installation, use the above-mentioned manufacture method of solidifying slag manufacture method and the reinforcement of concrete coarse aggregate of solidifying slag manufacturing installation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that schematically shows the integral body formation of solidifying slag manufacturing installation of an embodiment of the invention.
Fig. 2 is the key diagram of the mold that solidifies slag manufacturing installation of an embodiment of the invention.
The key diagram of Fig. 3 for the configuration of solidifying each portion around travel mechanism in slag manufacturing installation of an embodiment of the invention is described.
The specific embodiment
The slag manufacturing installation 1 (referring to Fig. 1) that solidifies of an embodiment of the invention has 2 above metal molds 5, this mold 5 has the depressed part 5a (Fig. 2 reference) that can pour into molten slag 3, this device be by make to pour into the molten slag 3 of depressed part 5a solidify to manufacture solidify slag 18 solidify slag manufacturing installation, wherein, this solidify slag manufacturing installation possess make 2 with trussell 5 under the state that approaches and support along continuous straight runs around mobile around travel mechanism 7.
Around travel mechanism 7 edges, around direction, possess successively: air-cooled moving part 9, this air-cooled moving part 9 makes mold 5 along moving around direction the molten slag pouring into 3 is remained under the state in depressed part 5a, to remaining on molten slag 3 in depressed part 5a, carry out air-cooled making it and solidify; Reversion discharge portion 11, thus this reversion discharge portion 11 makes mold 5 reverse and will solidify slag 18 discharges according to depressed part 5a mode downward; Reversion moving part 13, this reversion moving part 13 moves the mold 5 after reversion under the state that keeps reversion; Inversion portion 15 again, this again inversion portion 15 mold 5 in inverted status is reversed towards the mode of top again according to depressed part 5a, can possess the moving part 17 that again reverses as required, the mold 5 after this moving part 17 that again reverses makes again to reverse moves to the position that pours into molten slag 3.
Slag manufacturing installation 1 is solidified in utilization, during rounding, pours into molten slag 3 and manufactures and solidify slag, thereby carry out around carrying out continuously the operation in each week in depressed part 5a in mold 5 is solidifying slag manufacturing installation 1.
It should be noted that, solidify in slag manufacturing installation 1 chute 20 can be set, make to be easy to pour into molten slag 3 in mold 5.
Below, describe each in detail and form.
< mold >
Mold 5 has the depressed part 5a at the shallow end that pours into molten slag 3.More particularly, as shown in Figure 2, mold 5 is advisable to have the metal container made of the depressed part 5a that is roughly trapezoidal shape.As shown in Figure 1, the mold 5 of present embodiment is according to making 2 modes that form circumference with trussell 5 in abutting connection with configuration.Therefore,, in order being configured efficiently with circle-shaped, to form and take the approximate trapezoid that limit portion that the limit portion of outer circumferential side is the inner circumferential side of going to the bottom, take is upper base.
Therefore it should be noted that, in this example, with circle-shaped configuration mold 5, make the shape of mold 5 take and overlook as approximate trapezoid, as long as but be set as carrying out the effectively shape of configuration corresponding to the shape of surround orbit.For example, if surround orbit is rectangular shape, mold 5 is preferably rectangle.
The inwall of mold 5 can have the end of from upward the inclined plane 5b of inclination laterally.This is to be easy to make to solidify the slag demoulding when making mold 5 reversion.
In addition, the anti-slag position 5c that drops can be set in mold 5, this anti-slag position 5c that drops falls into the gap (referring to Fig. 2) of the mold 5 of adjacency for prevent molten slag 3 when pouring into molten slag 3.
The material of mold 5 consists of the metal of casting the excellent heat resistances such as steel or stainless steel.In addition, the thickness of mold 5 is advisable with for example 40mm left and right.When the thickness of mold 5 is too thin, easily the heat because of high temperature furnace slag is out of shape, and can cause obstacle to transmitting, and is therefore preferably at least more than 20mm; Otherwise when too thick, weight increases and likely transmission and reversion is caused to obstacle, thereby is preferably below 80mm.
It should be noted that, as described below, in the time of solidifying slag as the reinforcement of concrete coarse aggregate, the thickness that solidifies slag is preferably 20mm~40mm.In order to manufacture the slag that solidifies of this concreting thickness, the degree of depth of the depressed part 5a of mold 5 is preferably 60mm~200mm left and right of 3~5 times of left and right of concreting thickness.If have the degree of depth of 3~5 times of left and right of concreting thickness, even in the situation that the flow of molten slag changes, molten slag can not overflow from mold yet.
< is around the > of travel mechanism
Around travel mechanism 7 with approach state according to 2 of circle-shaped supports with trussell 5 and make it around movement.To being not particularly limited for supporting the supporting mechanism of mold 5, for example can axial region and wheel be set in outer circumferential side and the inner circumferential side of mold 5, above-mentioned wheel supporting, on the guide rail along extending around direction, is made to rotation of wheel by driving mechanism with specific speed.
For for travel mechanism 7, the interval of rounding in mold 5 is solidifying slag manufacturing installation 1, as shown in figures 1 and 3, along possess successively air-cooled moving part 9, reversion discharge portion 11, reversion moving part 13, inversion portion 15, the moving part of reversion again 17 as required again around direction.
Describe the each several part around travel mechanism 7 below in detail.
The air-cooled moving part > of < < >
Air-cooled moving part 9 is under the state in depressed part 5a, to make mold 5 along around direction moves, molten slag 3 being carried out to the air-cooled position that makes it to solidify the molten slag pouring into 3 is remained on.
In air-cooled moving part 9, the molten slag 3 pouring into is by air-cooled and reach specific curdled appearance and need the time, and present embodiment around travel mechanism 7, make mold 5 in the horizontal direction around movement, thereby do not have to make the such restriction of air-cooled moving part 9 as solidifying for molten slag around mobile half stroke as take the linear situation that connects mold 5 of ring-type.
Therefore, also can around the length allocation beyond direction length, give air-cooled moving part 9 by reversion discharge portion 11 each portions such as grade that continue with air-cooled moving part 9 are needed.Thus, can make around not producing ineffective time in stroke.
It should be noted that, in air-cooled moving part 9, to slag watering, carry out when cooling, be frozen into Porous and cause curing slag intensity to decline, therefore forbid watering.
In addition, the shared length (angle) of air-cooled moving part 9 is advisable to surpass 1/2 (180 degree) of ratio shared in surround orbit overall length (full angle 360 degree) and to be less than 3/4 (270 degree).
< < reversion discharge portion > >
Reversion discharge portion 11 is mold 5 is reversed according to depressed part 5a mode downward and will to utilize the position that slag 18 is discharged of solidifying that air-cooled moving part 9 solidifies.
As shown in Figure 1, reversion is after discharge portion 11 is configured in air-cooled moving part 9, hold the discharged groove that solidifies slag 18 19 be arranged on around the below of mold 5.
For the mechanism of mold 5 reversions is not particularly limited, for example can as above-mentioned around as described in the explanation of travel mechanism 7, when mold 5 axles being supported on guide rail via wheel, in the mode that can rotate, support, and, in air-cooled moving part 9, set in advance and keep the attitude of mold 5 to make the non-rotary maintaining part of mold 5, then guide portion can be set, this guide portion guides the attitude reversion that makes mold 5 when mold 5 arrives reversion discharge portion 11.
It should be noted that, as shown in Figure 1, thereby the reverse directions of mold 5 is preferably towards the direction around direction rotation reversion.Thereby if make mold 5 to reversing around direction rotation, there are the following problems: for example, as the situation that mold 5 is tilted to the footpath direction around direction of patent documentation 2, center of gravity is with respect to cause the whole disequilibrium of whirligig around misalignment.The rotation around direction of mold 5 can be any in turning clockwise or turning counterclockwise.
< < reversion moving part > >
Reversion moving part 13 is to make reversion in reversion discharge portion 11 and discharge the mold 5 solidify after the slag position to keep the state of reversion to move.As shown in Figure 1, in reversion moving part 13, preferably arrange from upside and the downside of mold 5 and spray cooling medium and mold 5 is carried out to cooling cooling device 21.
Specifically, can use nozzle etc., from upside and downside, cooling water, water smoke or refrigerating gas are sprayed onto to the mold 5 reversion, but for efficient and cooling at short notice, to spray cooling water from upper and lower both sides, carry out quenching and be advisable.
In the present embodiment, carry out coolingly making mold 5 reversion in the situation that of making depressed part 5a downward, thereby cooling water drops naturally, in the inside of mold 5, do not have the residual of water.Therefore, there is not following problems: as remaining the situation of cooling water in mold 5, again in the mold after reversion again while pouring into molten slag, in the slag solidifying, produce a large amount of pores and cannot be used as the reinforcement of concrete coarse aggregate.In addition, cause that the dangerous problem of steam blast also disappears completely, can manufacture safely the high-quality slag 18 that solidifies.
It should be noted that, by from upside and downside, this two carries out cooling in the face of mold 5, than only shortening cool time from one-sided carry out cooling, the reversion moving part 13 that therefore can shorten cooling mold shared length in always around length, thereby can correspondingly increase the length of the air-cooled moving part 9 solidifying for slag, can make the length of air-cooled moving part 9 surpass 1/2 of surround orbit overall length.
As mentioned above, the length of air-cooled moving part 9 need to be guaranteed for making molten slag 3 be solidified as the time of specific state, therefore need specific length, but the length that can reduce each position beyond length-specific around the ratio in length, thereby can make device integral miniaturization.From this meaning, consider, from the cooling mold 5 of upper and lower surface, contribute to very much the miniaturization of device integral body.
In addition, by from the cooling mold 5 of upper and lower surface, cooling mold 5 equably, thereby also have and can prevent from making the such excellent effect of mold 5 distortion because of the cooling thermal contraction causing.The distortion of mold 5 is for around mobile or reversion, to carry out aspect these actions be major issue stable, thereby the abundant cooling of mold 5 is the key that this device turns round.
It should be noted that, preferably from upside and this two sides of downside, carry out the cooling of mold 5 as described above, but only do not get rid of in the present invention from upside or only from downside, carry out one-sided cooling.
< < is inversion portion > > again
Again inversion portion 15 be make the mold in inverted status 5 after mobile in reversion moving part 13 according to depressed part 5a towards above the mode position of again reversing.After inversion portion 15 is preferably arranged on reversion moving part 13 again and in the depressed part 5a of mold 5 not after the state of residual cooling water.
That is, as shown in Figure 1, preferably by cooling device 21, undertaken cooling after, the mobile specific range that only reverses, reverses afterwards again.Its reason be because, mobile specific range only reverses after cooling, in reversion movement, when cooling, a part for residual moisture naturally drops from mold 5 thus, and a part is evaporated owing to discharging the residual heat that solidifies the mold 5 after slag of high temperature, thereby removes moisture completely.
It should be noted that, for the mechanism that mold 5 is reversed again, be not particularly limited, can adopt for example same with above-mentioned reversion discharge portion 11 mechanism.In addition, as shown in Figure 1, thereby be also preferably made as with the discharge portion 11 of reversing similarly towards again reversing around direction rotation for the reverse directions again of mold 5.In addition, mold 5 along the rotation around direction can in turning clockwise or turning counterclockwise any.
The < < moving part > > that again reverses
The moving part 17 that again reverses is to make the mold 5 again reversing move to the local position that pours into molten slag 3.
It should be noted that, if at once pour into molten slag 3 after mold 5 being reversed again in inversion portion 15 again, also the moving part 17 that again reverses can be set.
The example that slag manufacturing installation 1 is manufactured the method for solidifying slag of solidifying for by present embodiment as constructed as above, describes in the lump with the action of solidifying slag manufacturing installation 1.
Make around travel mechanism 7 with specific speed rotation, molten slag flow into position to around mold 5 in pour into molten slag 3, the mold 5 pouring into after molten slag 3 moves in air-cooled moving part 9, and molten slag 3 is carried out air-cooled and forms and solidify slag.
Thereby mold 5 court in reversion discharge portion 11 that arrives reversion discharge portion 11, around direction rotation reversion, solidifies slag 18 and is discharged to groove 19.The mold 5 that discharge is solidified after slag 18 moves in reversion moving part 13 with inverted status, in above-mentioned mobile way, by cooling device 21, is undertaken cooling.
Mold 5 by reversion moving part 13 inversion portion again 15 towards around direction rotation again reversion make depressed part 5a towards above.At once, after mobile or in the moving part 17 that again reversing after reversion again, again utilize slag inflow portion to pour into molten slag 3 in the mold 5 of reversion again.
As mentioned above, in the present embodiment, solidify slag manufacturing installation 1 possess make 2 with trussell 5 under the state that approaches and support along continuous straight runs around mobile around travel mechanism 7, around travel mechanism 7, possess: air-cooled moving part 9,9 pairs of molten slags of this air-cooled moving part 3 carry out air-cooled making it and solidify; Reversion discharge portion 11, thus this reversion discharge portion 11 makes mold 5 reverse and will solidify slag 18 discharges according to depressed part 5a mode downward; Reversion moving part 13, this reversion moving part 13 moves the mold 5 after reversion under the state that keeps reversion; Inversion portion 15 again, this again inversion portion 15 make the mold 5 in inverted status again reverse and make depressed part 5a towards top.Thus, the necessary length of the air-cooled stroke solidifying due to slag unlike connect linearly the past case of mold with ring-type is restricted the overall circumference of device, can be by the necessary length of giving air-cooled moving part 9 around the length allocation outside direction length of reversion discharge portion 11 each such as grade that continue with air-cooled moving part 9, around not producing ineffective time in stroke.
In addition, in the present embodiment, in reversion moving part 13, from upper and lower surface, to mold 5, carry out cooling, thereby cooling mold 5 effectively, the length that can shorten thus reversion moving part 13, its result can shorten around length, thereby can make device overall compact.
It should be noted that, in order to manufacture 1 of JIS A5011 the reinforcement of concrete slag aggregate-: the aggregate of the particle size range of specific blast-furnace slag coarse aggregate 2005 in blast-furnace slag aggregate, the concreting thickness that preferably makes slag is 20mm~40mm.
Concreting thickness is less than in the situation of 20mm, and the size distribution after fragmentation becomes particulate, is not easy to meet standard.
On the other hand, if concreting thickness surpasses 40mm, water absorption rate increases and easily surpasses 1.5%; And needs repeatedly brokenly in order to make concreting thickness be that 20mm is following, be less than the particulate increase of 5mm and productivity ratio easily declines, thereby become problem.As described below, the water absorption rate as coarse aggregate is preferably below 1%.
It should be noted that, in the above-described embodiment, to solidifying slag manufacturing installation 1, be illustrated, if use impact grinding device and the grading plants such as impact crusher or hammer mill, form on the whole the manufacturing installation of the reinforcement of concrete coarse aggregate, described impact grinding device is for pulverizing solidified the tabular slag that solidifies of slag manufacturing installation 1 manufacture by this, and described grading plant will be for utilizing the slag that solidifies of impact grinding device fragmentation to be classified as the 20mm~5mm that can be used as the reinforcement of concrete coarse aggregate.
It should be noted that, in above-mentioned embodiment, show as shown in Figure 1 to make around direction be clockwise example, but in the present invention, around direction, be not limited to this, also can be according to air-cooled moving part, reversion discharge portion, reversion moving part, the order of inversion portion, the moving part that again reverses is as required for counterclockwise again.
In addition, around shape can not be also circle-shaped, can be such as ellipse, rectangle etc.
Embodiment
The action effect that slag manufacturing installation 1 brings that solidifies for present embodiment, describes based on specific embodiment.
In the present embodiment, mold 5 is for overlooking the cast steel system that is trapezoidal shape, and its thickness is that the upper base minor face of 45mm, trapezoidal external diameter is that the length of the minor face of going to the bottom of 0.7m, trapezoidal external diameter is that the height of 1.0m, trapezoidal external diameter is 2.7m.In addition, the degree of depth of the depressed part 5a of mold 5 is 100mm.
Identical around travel mechanism 7 with shown in Fig. 1 is 14 ms/min around the transfer rate transmitting at mold center.
Slag flows in position, and the blast-furnace slag of the molten conditions more than making 1360 ℃ and below 1410 ℃ is according to approximately 2 tons of/minute inflow molds 5.
The mold 5 pouring into after molten slag 3 transmits approximately 120 seconds { 2/3 (240 degree) that the length of air-cooled moving part is complete cycle } in air-cooled moving part 9, by air-cooled, molten slag 3 is made and is solidified slag.
In reversion discharge portion 11, as illustrated in embodiment, thereby usining the back shaft of mold 5 reverses mold 5 as axial rotary around direction rotation, makes to solidify slag 18 and drops and be expelled to groove 19.Make to discharge the mold 5 solidifying after slag 18 and keep inverted status to move in reversion moving part 13, at the position that is provided with cooling device 21, from upper and lower surface, spray cooling water and carry out quenching.
After solidifying slag and discharging, the mold in inverted status 5 is soon the condition of high temperature over 300 ℃ with solidifying the surface that slag 18 contact, but by spraying cooling water under the state keeping reversion, can be by the surface temperature quenching to 200 of mold 5 ℃ following temperature.
The depressed part 5a that cooled mold 5 keeps molds 5 transmits in reversion moving part 13 towards the state of below, and during this, a residual moisture part naturally drops from mold 5 during water-cooled, a part of residual heat due to mold 5 evaporates, thereby be completely removed.
It should be noted that, the temperature of mold makes slag reversion reach maximum temperature before dropping at once, if but now utilize the surface temperature at the mold back side that radiation thermometer measures (upper surface of the mold of reversion, be the reverse side of mold) over 300 ℃, yield strength declines and makes mold 5 distortion sometimes, thereby expectation is, increase watering amount, watering time and the temperature range of decrease of utilizing cooling water to spray the mold obtaining is increased, the surface temperature at the back side of the mold 5 before the mold that makes to be thus about to reverse is below 300 ℃.
Then, the mold 5 of inverted status passes through again inversion portion 15 and again reverses, and again returns to original depressed part 5a towards the state of top.Afterwards, in the mold returning, again pour into molten slag.For a slag pot, repeatedly 5 enclose above operation, process continuously 30 tons of molten slags.
The slag dropping mold from reversion, from groove 19 reclaims, is measured to concreting thickness, is 20mm~30mm, and average thickness is 25mm.
The situation that forms several meters of thickness with enforcement in the past molten slag 3 is watered to ground is compared, and also makes cooling velocity increase even air-cooled, solidifies slag 18 for the few and fine and close crystalline of pore.
As above, utilize and to solidify slag manufacturing installation 1, can be efficiently and obtain continuously air vent content extremely low, fine and close and high-quality solidify slag 18.
Then,, for the slag that solidifies of so manufacturing is made to the reinforcement of concrete coarse aggregate, use impact crusher to carry out fragmentation to tabular 10 tons, the slag that solidifies.And the slag of the sieve that utilizes 20mm, 5mm after to fragmentation carried out classification.Thus, can manufacture the reinforcement of concrete coarse aggregate of 20mm~5mm.
The water absorption rate of measuring the coarse aggregate of manufacturing, result is 0.9%, is significantly less than as 3%~4% of the water absorption rate of blast-furnace slag coarse aggregate in the past, has obtained the water absorption rate equal with natural aggregate.
It should be noted that, the water absorption rate as coarse aggregate, is preferably below 1%.
Symbol description
1 solidifies slag manufacturing installation
3 molten slags
5 molds
5a depressed part
5b inclined plane
The anti-slag of the 5c position of dropping
7 around travel mechanism
9 air-cooled moving parts
11 reversion discharge portions
13 reversion moving parts
15 inversion portions again
17 moving parts that again reverse
18 solidify slag
19 grooves
20 chutes
21 cooling devices

Claims (8)

1. one kind solidifies slag manufacturing installation, this solidifies slag manufacturing installation and has 2 above metal molds, this mold has the depressed part that can pour into molten slag, thereby described device be by make to pour into the molten slag of described depressed part solidify manufacture solidify slag solidify slag manufacturing installation, wherein, this solidify slag manufacturing installation possess make described 2 with trussell under the state that approaches and support along continuous straight runs around mobile around travel mechanism, described around travel mechanism along possessing successively around direction:
Air-cooled moving part, this air-cooled moving part makes described mold along moving around direction the molten slag pouring into is remained under the state in described depressed part, the molten slag keeping is carried out to air-cooled making it solidify in described depressed part;
Reversion discharge portion, this reversion discharge portion makes described mold reverse according to described depressed part mode downward, thereby will solidify slag, discharges;
Reversion moving part, this reversion moving part moves the described mold after reversion under the state that keeps reversion; With
Inversion portion again, this again inversion portion the described mold in inverted status is reversed towards the mode of top again according to described depressed part.
2. the slag manufacturing installation that solidifies as claimed in claim 1, wherein, the shared length of described air-cooled moving part surpass the described surround orbit overall length around travel mechanism 1/2 and be less than 3/4, the shared angle of described air-cooled moving part surpasses 180 degree of described full angle 360 degree around travel mechanism and is less than 270 degree.
3. the slag manufacturing installation that solidifies as claimed in claim 1 or 2, wherein, thereby described reversion discharge portion is by making described mold towards around direction rotation, described mold being reversed.
4. as described in any one in claim 1~3, solidify slag manufacturing installation, wherein, described reversion moving part possesses to the upper and lower surface of the described mold of inverted status and sprays cooling medium and carry out cooling cooling device.
5. the slag manufacturing installation that solidifies as claimed in claim 4, wherein, described cooling device is that 300 ℃ of following modes are carried out cooling to described mold according to the surface temperature that makes the described mold back side.
6. a manufacturing installation for the reinforcement of concrete coarse aggregate, it possess in claim 1~5 described in any one solidify slag manufacturing installation, to solidify described in utilizing the manufacture of slag manufacturing installation solidify that slag carries out broken impact grinding device and to utilizing described impact grinding device to carry out the grading plant that slag carries out classification that solidifies after fragmentation.
7. one kind solidifies slag manufacture method; its be right to use require in 1~5 described in any one solidify slag manufacturing installation manufacture solidify slag solidify slag manufacture method; wherein; in the described depressed part of described mold, pour into molten slag; make the described mold that pours into molten slag in described depressed part around movement; simultaneously to pour into the molten slag of described depressed part, carry out air-cooled, thereby the tabular slag that solidifies that is frozen into the thickness of 20mm~40mm is discharged in the reversion of described mold.
8. a manufacture method for the reinforcement of concrete coarse aggregate, wherein, to utilizing the slag that solidifies that solidifies the manufacture of slag manufacture method described in claim 7 to carry out fragmentation, is classified into 5mm~20mm by the slag that solidifies after fragmentation.
CN201380009214.9A 2012-02-17 2013-02-13 Solidify slag manufacturing installation, the reinforcement of concrete coarse aggregate manufacturing installation, solidify the manufacture method of slag manufacture method and the reinforcement of concrete coarse aggregate Active CN104114969B (en)

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