CN101643326B - Device and method for post treatment of slag mud - Google Patents
Device and method for post treatment of slag mud Download PDFInfo
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- CN101643326B CN101643326B CN2008101458505A CN200810145850A CN101643326B CN 101643326 B CN101643326 B CN 101643326B CN 2008101458505 A CN2008101458505 A CN 2008101458505A CN 200810145850 A CN200810145850 A CN 200810145850A CN 101643326 B CN101643326 B CN 101643326B
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Abstract
The invention relates to a device and a method for post treatment of slag mud. The device for the post treatment of the slag mud is arranged at an output rear end of a sand washing machine screening slag with a size of less than 8mm; the output rear end of the sand washing machine is connected with water level difference-controlling equipment and a strong pump and provided with a mud-water separator connected with the output end of the strong pump through a pipeline, a water tank connected with the mud-water separator through a pipeline and a drying bed; and the mud-water separator is inside provided with a partition wall that divides the inside of the mud-water separator into a front part and a rear part. The method for processing the slag mud rear section comprises the following steps of: transportation operation, mud and water separation operation and water storage continuous operation. The device and the method can achieve the effect of completely recycling slag mud.
Description
Technical field
The present invention relates to a kind of slag mud back segment treatment unit and method thereof, particularly relate to a kind of water washing type after-treatment device and method that is applied to the copper smelter slag work program, can avoid dust from flying, and avoid lime to influence soil and underground water source, and further refinement, and can be with the slag mud back segment treatment unit and the method thereof of the complete recycling of slag.
Background technology
The complete copper smelter slag post-processing technology of one cover can be divided into quadravalence section program, include the copper smelter slag preprocessor, the copper smelter slag work program, copper smelter slag health program and residual aluminium work program, but might not four programs all possess in slag aftertreatment industry, but accepted or rejected operation according to its demand out of the ordinary, wherein, the copper smelter slag work program, mainly be through fragmentation with slag, magnetic separation, the screening supervisor, and can magneticly elect the residual steel of iron-holder more than 55%, so that carry out precision work or directly supply with sintering oven, blast furnace, converter or electric-arc furnace steelmaking use, and the specification slag is except can be used as the flux of smelting iron and steel, outside cement raw material or the soil improvement agent, also can be used as road engineering material.
Please cooperate consult shown in Figure 5, it is the existing treatment of slag flow process of commonly using, at first, slag drops down onto in the crusher 41 via raw material recovering hopper 40, and via selecting the residual steel that wherein contains iron with magnetic separator 42 again after smashing, this residual steel can be used as the steelmaking feed of Steel Plant, and remaining slag is again through sorting 43 operations, and select the road gradating material 44 of each grade, to be provided as the road engineering purposes.
Above-mentioned slag is just when making steel the furnace high-temperature taking-up, for making its cooling watering cooling earlier, causing slag and lime powder to stick together mixes, and if all it can't be separated with methods such as traditional magnetic separation or sortings, in the time of can causing sorting more on the contrary, because slag and lime powder be moisture to be sticked together and clogs Screening Network, cause the operation puzzlement and influence operating efficiency, and the bad and effectively widespread use of its product quality.
Again, in the steelmaking process, must add multiple auxiliary material in the steel melting furnace, wherein be doped with a large amount of unslaked limes (Wingdale), also contain a large amount of lime powders in the middle of causing slag, and pH value circle of lime belongs to highly basic between 10-11, the existing treatment process of commonly using not only can't be separated lime powder, more make lime powder and gradating material at different levels be mixed, and gradating material apply to road engineering mostly, because of containing the large quantities of lime powder and can't reaching CNS (road slag) standard, can only be as sidewalk backfill purposes, can to promote purposes more extensive if lime is isolated its value, and aforesaid method can't be really with the complete recycling of slag, and real symbolic animal of the birth year is when unfortunately.
Please cooperate consult shown in Figure 6, it is another kind of treatment of slag, wherein, slag drops down onto in the dryer 51 via raw material recovering hopper 50 earlier, and the moisture content that is absorbed when slag cooled off is dried fully, thereafter select the residual steel that wherein contains iron with magnetic separator 53 more again after crusher 52 smashes, last hearthstone goes out the gradating material 55 of each grade again through sorting 54.
Above-mentioned processing mode is earlier with the slag oven dry, thus can be divided into the gradating material of more multiple grade during its sorting, and do not have slag and lime powder sticks together and clog the puzzlement of Screening Network, but can derive following problem:
1. cost of equipment height: owing to after the slag oven dry, can cause lime dust to fly upward polluted air, except drying plant, also anti-control equipment precipitron 56 is polluted in installing in addition, and significantly improves equipment cost.
2. operating efficiency is low: because this kind treatment process must be dried the gradating material that just can sub-elect the expection kind fully, so its when baking procedure, one time inlet amount can not be too many, otherwise can cause flow process stagnate to block, and have a strong impact on operating efficiency.
3. atmospheric pollution: pollute anti-system dust-collecting equipment even if the existing treatment process of commonly using is provided with, also airborne micronic dust can only be reduced in the standard value, can't completely cut off the dust from flying problem fully.
4. maintenance cost height: except whole group cost of equipment, it is all quite high to pollute the cost that anti-control equipment and drying plant keep in repair in the future, maintain, operate and consume, and its failure rate height, the many maintenance costs of more extra increase.
For this reason, the contriver is especially at the problems referred to above, and that engineering participation goes out is a kind of as No. 481673 water washing type treatment of slag of TaiWan, China patent announcement numbering, it is to screen with water-washing method, and can overcome the problem that above-mentioned prior art produces, only, this case is filtered with water-washing method and is shaked out, and the muddy water of washing sand flows in the settling tank and is settled out fines, if can further improve processing procedure again, make it can further handle out the finer meticulous material of grade, promptly more can meet the modern industry demand, and design problem to be solved for the present invention.
This shows that above-mentioned existing slag mud treatment unit and method thereof obviously still have inconvenience and defective, and demand urgently further being improved in product structure, manufacture method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product and method do not have appropriate structure and method to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of new slag mud back segment treatment unit and method thereof, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing slag mud treatment unit and method thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and expertise, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of new slag mud back segment, can improve general existing slag mud treatment unit and method thereof, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcome the defective that existing slag mud treatment unit and method thereof exist, and provide a kind of novel slag mud back segment treatment unit and method thereof, technical problem to be solved is to make it with the complete recycling of slag mud, and can further handle out the slag mud back segment treatment unit and the method thereof of meticulous material.
The object of the invention to solve the technical problems realizes by the following technical solutions.Slag mud back segment treatment unit according to the present invention's proposition, it is arranged at processing through the sand washer output rear end of screening for the following specification slag of 8mm, it is established a control water level difference of height equipment and connects a powerful group Pu in sand washer output back termination, and be provided with one and be connected in the mud and water separating equipment of powerful group Pu exit end with pipeline, and be provided with one and connect the water reservoir of mud and water separating equipment with pipeline, and has a bed of drying, one division wall is set in this mud and water separating equipment, makes this mud and water separating equipment inside be divided into front and rear.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid slag mud back segment treatment unit, the pipeline water intake end place of wherein said connection mud and water separating equipment and water reservoir is provided with a lift pipe fitting.
The object of the invention to solve the technical problems also realizes by the following technical solutions.According to the slag mud rear section treating method that the present invention proposes, it may further comprise the steps: carry operation, extract the muddy water that contains the following size slag of fines level after the washing screening out with brute force group Pu; The mud-water separation operation, described muddy water is imported in the mud and water separating equipment, make in the muddy water fines (below the 100mesh with front and back two-stage class settling means, being that each square cun has 100 and multiply by 100 to equal 10000 mesh following) slag is deposited in this mud and water separating equipment front, and make meticulous material in the muddy water (more than the 300mesh, promptly each square cun has 300 and multiply by 300 and equal 90000 more than the mesh) slag fall to the mud and water separating equipment rear;
Retaining is worked continuously, and makes by keeping in the water importing water reservoir behind the precipitation removal slag, in order to the circulation recycling;
The slag drying will be taken out sedimentary fines in position and meticulous material size slag before and after the mud and water separating equipment, be transferred to dry the bed place and dry.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows:
For achieving the above object, the invention provides a kind of slag mud back segment treatment unit and be arranged at processing through the sand washer output rear end of screening for the following specification slag of 8mm, sand washer output back termination is established a control water level difference of height equipment and is connected a powerful group Pu, pipeline rear side at brute force group Pu output terminal is provided with a mud and water separating equipment, make via sand washer, magnetic separator processing shake out and iron after high density muddy water can deliver to mud and water separating equipment by control water level difference of height equipment and the Pu pressurization of powerful group, division wall is set one in this mud and water separating equipment, make and be divided into front and rear in the pond, and one lift pipe fitting is set at the rear end, and connect a water reservoir with pipeline, and be provided with one and dry berth in the mud and water separating equipment periphery in lift pipe fitting rear end.
In addition, for achieving the above object, the present invention also provides a kind of slag mud rear section treating method, and it carries out the back segment treatment step for slag, comprising: carrying operation, is to extract out via leading portion with brute force group Pu to handle and enter muddy water in the sand washer; The mud-water separation operation, the muddy water high pressure is injected mud and water separating equipment carry out sedimentation, the control flow velocity, the collision space bar produces reactive force, form whirlpool, utilize its proportion difference to make muddy water be separated into fines gradually, and frivolous material along with entering, the floating super-interval wall of muddy water is settled out meticulous material in the rear via the front; Retaining is worked continuously, and by the lift pipe fitting water is injected water reservoir via the surperficial clear liquor of mud-water separation operation, and cycle applications in the washing sieve extension set of leading portion processing is carried back at control group Pu.
By technique scheme, slag mud back segment of the present invention has following advantage and beneficial effect at least:
1, avoid micronic dust to fly upward: when falling in the washing sieve extension set via the raw material recovering hopper owing to slag, sprinkler system in the washing sieve extension set can be earlier with the lime powder flush away, no matter so be course of conveying between each flow process backward, or smash and the magnetic separation process in, all do not have the problem that lime dust flies upward and produce.
2, slag recycling fully: when falling in the washing sieve extension set via the raw material recovering hopper owing to its slag, sprinkler system in the washing sieve extension set can be earlier with the lime powder flush away, and through the mud-water separation program, make those line Dusts be precipitated as fines, with as raw materials such as cement, fertilizer, and increase the kind of specification slag.
3, do not influence soil and groundwater quality: when falling in the washing sieve extension set via the raw material recovering hopper owing to its slag, sprinkler system in the washing sieve extension set can be earlier with the lime powder flush away, so that lime powder is separated fully as cement raw material, so its gradating materials that apply to road engineering at different levels can pass through CNS (road slag) standard, as green product, be widely used in public work.
4, utilize position before and after the mud-water separation settling tank, dry handling procedures such as bed and water reservoir, make fines can further handle out meticulous material, and finer industrialization classification demand can be provided, selected for use so that the dealer to be provided, cut down finished cost.
5, invention by this, after the following specification slag of 8mm is cleaned via sand washer, its muddy water can help the Pu to squeeze in the mud and water separating equipment via brute force, muddy water is introduced into carry out the initial gross separation operation in the equipment front and produces fines, and make frivolous material float the super-interval wall along with muddy water, continue the sedimentation operation in the rear and enter, make it can in the rear, be settled out meticulous material, used to industry so that suitable raw material to be provided.
In sum, the invention relates to a kind of slag mud back segment treatment unit and method thereof, wherein, slag mud back segment treatment unit has the brute force group Pu that control water level difference of height equipment connects sand washer, and continue a mud and water separating equipment is set, one division wall is set in this equipment, make inside be divided into front and rear, it connects water reservoir to recycle-water through the lift line device again via after handling, and have a mud and dry bed, and treatment process of the present invention, then be for screen the left next following slag of 8mm in back via washing sieve extension set and magnetic separator, shake out through the sand washer processing, the muddy water of all the other high densitys, the control water level is delivered in the mud and water separating equipment by brute force group Pu, by preceding half device control flow rate, collision internal interval wall produces reactive force, produce vortex and make the fines rapid subsidence, residence time prolongs naturally, all the other flow into later half equipment through division wall and obtain finer meticulous material, simultaneously surperficial clear liquor is passed through the lift pipe fitting, import cycling and reutilization in the water reservoir, can obtain the raw material of high purity (fully not iron content) by this method, provide and make silicic acid fertilizer and soil improvement agent and cement raw material hearthstone powder or the like ..., can be used to provide the dealer to exempt to grind.
The present invention has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure, method or function, obvious improvement is arranged technically, and produced handy and practical effect, and more existing slag mud treatment unit and method thereof have the outstanding multinomial effect of enhancement, thereby being suitable for practicality more, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technique means of the present invention, and can be implemented according to the content of specification sheets, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is that slag mud back segment treatment unit of the present invention is applied to the synoptic diagram in the slag handling system.
Fig. 2 apparatus of the present invention brute force is helped Pu, device for separating mud and water, is dried on bed and the water reservoir and look synoptic diagram.
Fig. 3 is the sectional view that the powerful group of apparatus of the present invention Pu is provided with position and settling tank.
Fig. 4 is the flow chart of steps of the inventive method.
Fig. 5 is the schematic flow sheet of the existing method of commonly using.
Fig. 6 is the schematic flow sheet of the another kind of existing method of commonly using.
10: raw material receiving section 11: the washing sieve extension set
12: magnetic separator 13: crusher
14: magnetic separator 15: the secondary raw material recovering hopper
16: burrstone mill 17: magnetic separator
18: magnetic separator 19: magnetic separator
20: magnetic separator 21: sand washer
22: powerful group Pu 220: control water level difference of height equipment
221: pipeline 23: mud and water separating equipment
231: front 232: division wall
233: rear 24: water reservoir
25: dry bed 26: pipeline
261: lift pipe fitting 30: magnetic separator
31: group Pu 40: raw material recovering hopper
41: crusher 42: magnetic separator
43: sorting 44: gradating material
50: raw material recovering hopper 51: dryer
52: crusher 53: magnetic separator
54: sorting 55: gradating material
56: precipitron
Embodiment
Reach technique means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of slag mud back segment, structure, method, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technique means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Please cooperate and consult Fig. 1, Fig. 2 and shown in Figure 3, wherein, slag mud back segment treatment unit of the present invention is to be arranged at processing through the sand washer 21 output rear ends of screening for the following specification slag of 8mm, wherein:
The height of described division wall 232 is lower than mud and water separating equipment 23 wall height on every side, makes the muddy water that enters mud and water separating equipment 23 fronts 231 be separated into fines gradually, and frivolous thing can float super-interval wall 232 and enter continuation sedimentation operation in the rear 233.
See also shown in Figure 1, be to disclose the slag handling system layout diagram of slag back segment treatment unit of the present invention in conjunction with the combination of slag leading portion treatment unit, wherein for the leading portion treatment scheme of slag, be slag to be dropped down onto on the washing sieve extension set 11 via raw material recovering hopper 10 to send water to washing sieve extension set to wash earlier by water reservoir 24 control group Pus 31, the washing screening chance filters out more than the 30mm, 12-30mm, 8-12mm and 8mm are with inferior four kinds of specification slags, these four kinds of specification slags are more respectively through magnetic separator 12,18,19,20 select wherein ferruginous residual steel, the above specification slag of 30mm must smash fragmentation process through crusher 13 again and wash because of slag, so can dust from flying, and select wherein ferruginous residual steel through magnetic separator 14 again, and fall into via secondary raw material recovering hopper 15 again that burrstone mill 16 grinds and magnetic separator 17 magneticly elects ferruginous residual steel, all the other slags then are circulated to raw material recovering hopper 10 and handle once.
Again, being provided with in the washing sieve extension set 11 can be to the water spray system of slag watering, and the following specification slag of 8mm is delivered to sand washer 21 after magnetic separator 20 magnetic separation, utilizes water-washing method to filter sand in the water outlet, and magnetic separator 30 carries out magnetic concentration working to it, and selects the residual steel that wherein contains iron.
And deliver in the sand washer 21 after the sand in the washing water outlet through the slag that screening becomes the following specification of 8mm when slag, this sand can be used as lays the leveling of pavement brick fine sand, bituminous concrete aggregate and pipeline backfill sand ... Deng.
As for carrying out subsequent disposal by slag mud back segment treatment unit of the present invention and slag mud rear section treating method through the muddy water that contains the following fines size of 8mm slag after the washing screening, cooperation is consulted shown in Figure 4, and its step of slag rear section treating method of the present invention comprises:
Carrying operation, is to extract out with brute force group Pu 22 to enter the muddy water that contains the following size slag of fines level (the following size slag of this fines level is lime) in the sand washer 21 via the leading portion treatment scheme
The mud-water separation operation, described muddy water high pressure is imported in the mud and water separating equipment 23, make in the muddy water fines (below the 100mesh with front and back two-stage fractionation precipitation means, being that each square cun has 100 and multiply by 100 to equal 10000 mesh following) the size slag falls to mud and water separating equipment 23 fronts 231, and make meticulous material size in the muddy water (more than the 300mesh, promptly each square cun has 300 and multiply by 300 and equal 90000 more than the mesh) slag fall in the rear 233 of mud and water separating equipment 23 through division wall 232;
Retaining is worked continuously, and makes by keeping in the water importing water reservoir 24 behind the precipitation removal slag, in order to the circulation recycling.
Above-mentioned conveying operation is to extract out via leading portion with brute force group Pu 22 to handle and enter muddy water in the sand washer 21;
Above-mentioned mud-water separation operation, be muddy water to be imported carry out sedimentation in the mud and water separating equipment 23, make in the muddy water that imports front 231 than heavy substance, can suffer division wall 232 blocks earlier and circle round in front 231, and be settled out fines gradually, this fines promptly can be used as lime, fertilizer, the soil improvement raw material, and, frivolous material is then crossed division wall 232 along with muddy water and is entered in the rear 233 and continues the sedimentation operation and be settled out meticulous material (can be used as cement or hearthstone powder raw material), sedimentary fines, meticulous material can dig out and be delivered to and dry bed 25 places and dry for other industrial application, saves the attrition process cost.
Above-mentioned retaining is worked continuously, be will be via the clarifying water in mud-water separation operation rear surface, import in the water reservoir 24 through pipeline 26 with lift pipe fitting 261, and the connection setting at a gang of Pu 31 is set, and water is delivered in the set washing sieve extension set 11 of front end with 31 runnings of group Pu.
Described mud and water separating equipment 23 is provided with a lift pipe fitting 261 with the pipeline 26 water intake end places of water reservoir 24, makes sedimentary meticulous material when digging out operation, can cooperate the entry height of adjusting lift pipe fitting 261.
In the above-mentioned slag mud rear section treating method, squeeze into via brute force group Pu 22 high pressure that preliminary sedimentation goes out fines in the front 231 of mud and water separating equipment 23, and, frivolous material enters with the floating super-interval wall 232 of muddy water and is settled out in the rear 233 after the meticulous material, promptly can dig out meticulous material or fines by excavator, and meticulous material or fines delivered to dry bed 25 places and dry, its via the mud-water separation operation after, surface water is promptly imported in the water reservoirs 24 through pipeline 26 by lift pipe fitting 261, and water can be transported to sprinkler system in the washing sieve extension set 11 via group's Pu 31 ends and washes slag and utilize thereafter.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (3)
1. slag mud back segment treatment unit, it is arranged at processing through the sand washer output rear end of screening for the following specification slag of 8mm, it is characterized in that:
It is established a control water level difference of height equipment and connects a powerful group Pu in sand washer output back termination, and be provided with one and be connected in the mud and water separating equipment of powerful group Pu exit end with pipeline, and be provided with one and connect the water reservoir of mud and water separating equipment with pipeline, and has a bed of drying, one division wall is set in this mud and water separating equipment, makes this mud and water separating equipment inside be divided into front and rear.
2. slag mud back segment treatment unit according to claim 1 is characterized in that the pipeline water intake end place of wherein said connection mud and water separating equipment and water reservoir is provided with a lift pipe fitting.
3. slag mud rear section treating method, its feature may further comprise the steps in it:
Carry operation, extract the muddy water that after the washing screening, contains the following size slag of fines level out with brute force group Pu;
The mud-water separation operation imports described muddy water in the mud and water separating equipment, makes with front and back two-stage class settling means that the fines slag is deposited in this mud and water separating equipment front in the muddy water, and makes that meticulous material slag falls to the mud and water separating equipment rear in the muddy water;
Retaining is worked continuously, and makes by keeping in the water importing water reservoir behind the precipitation removal slag, in order to the circulation recycling;
The slag drying will be taken out sedimentary fines in position and meticulous material size slag before and after the mud and water separating equipment, be transferred to dry the bed place and dry.
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| CN2008101458505A CN101643326B (en) | 2008-08-07 | 2008-08-07 | Device and method for post treatment of slag mud |
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| CN101643326B true CN101643326B (en) | 2011-12-14 |
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| CN106032331A (en) * | 2015-03-16 | 2016-10-19 | 大地亮环保服务有限公司 | Method for producing liquid fertilizer containing secondary trace elements by water washing treatment of blast furnace slag |
| CN110835915B (en) * | 2019-11-26 | 2020-09-29 | 中国十七冶集团有限公司 | Construction method for backfilling frame foundation by adopting slurry separation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097469A (en) * | 1993-07-14 | 1995-01-18 | 保罗.沃思有限公司 | Granulating method and device |
| CN1769498A (en) * | 2004-11-05 | 2006-05-10 | 马鞍山钢铁股份有限公司 | Blast furnace cinder water quenching processing unit |
| CN101223290A (en) * | 2005-04-11 | 2008-07-16 | 西门子Vai金属科技有限公司 | Method and installation for slag granulation |
-
2008
- 2008-08-07 CN CN2008101458505A patent/CN101643326B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097469A (en) * | 1993-07-14 | 1995-01-18 | 保罗.沃思有限公司 | Granulating method and device |
| CN1769498A (en) * | 2004-11-05 | 2006-05-10 | 马鞍山钢铁股份有限公司 | Blast furnace cinder water quenching processing unit |
| CN101223290A (en) * | 2005-04-11 | 2008-07-16 | 西门子Vai金属科技有限公司 | Method and installation for slag granulation |
Non-Patent Citations (1)
| Title |
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| JP昭54-126692A 1979.10.02 |
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