CN101862810A - Cast used sand and slag recycling equipment - Google Patents

Cast used sand and slag recycling equipment Download PDF

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Publication number
CN101862810A
CN101862810A CN201010192813A CN201010192813A CN101862810A CN 101862810 A CN101862810 A CN 101862810A CN 201010192813 A CN201010192813 A CN 201010192813A CN 201010192813 A CN201010192813 A CN 201010192813A CN 101862810 A CN101862810 A CN 101862810A
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CN
China
Prior art keywords
sand
slag
bucket elevator
cast
screening plant
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.)
Granted
Application number
CN201010192813A
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Chinese (zh)
Other versions
CN101862810B (en
Inventor
周道宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI XINNING EQUIPMENT CO., LTD.
Original Assignee
ANHUI NINGGUO XINNING INDUSTRIAL Co Ltd
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Priority to CN2010101928137A priority Critical patent/CN101862810B/en
Publication of CN101862810A publication Critical patent/CN101862810A/en
Application granted granted Critical
Publication of CN101862810B publication Critical patent/CN101862810B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C5/00Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/06Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18Drum screens
    • B07B1/22Revolving drums
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals

Abstract

The invention discloses cast used sand and slag recycling equipment, which is provided with a feeding device (1), a screening device (2), a reclaimed sand recycling device (13), an iron slag recycling device (11) and a dust collector (3). The screening device (2), the reclaimed sand recycling device (13) and the iron slag recycling device (11) are sealed by the same cover; and the cover is communicated with the dust collector (3) through a dedusting wind guide pipeline(9). The technical scheme has the advantages of realizing automation of waste sand and slag treatment, reducing the labor intensity of workers, realizing full recovery and recycle of multiple kinds of waste sand and slag, reducing cost, saving energy, fully utilizing resources, reducing or avoiding the discharge of dust pollutants, fully ensuring to reduce or control dust pollution on atmospheric environment, along with high production efficiency.

Description

A kind of cast used sand, slag recycling equipment
Technical field
The invention belongs to the hot worked technical field of engineering material, relate to metal material casting technique equipment, more particularly, the present invention relates to a kind of cast used sand, slag recycling equipment.
Background technology
At present, the casting industry is developed rapidly, and relevant resource such as moulding sand etc. are more and more nervous or short; Human environment protection consciousness generally improves, and there is serious dust pollution in the working environment of casting industry old sand or slag treatment.
The subject matter that the processing of waste and old sand exists in the casting industry is at present:
Old sand, the slag that quite a few foundry enterprise produces only done artificial simple sorting.The slag iron content generally reaches about 5%~20% in the slag, shape, differs in size, and mixes sulfide, slag iron etc. in the slag, and profile is irregular to be covered with brambles, burr more, manually can only clean bulk or the slag surface tiny, can't thoroughly clean.Manually clean the back still have 3% in the slag~the slag flowing molten iron of nearly 20% (minority even surpass 20%) loses landfill; Though and old sand also still has 2% to nearly 10% slag flowing molten iron mistake through manually cleaning, directly cause the resource loss waste.The artificial treatment dust is big, and environmental pollution is serious.It is not high that the man-day cleans benefit, and day output is about 2 tons.And the reclaimed sand that obtains like this, ash content is not handled effectively, its difficult quality guarantee.
Part enterprise has taked semi-automatic equipment to carry out waste and old sand, slag treatment in order to reduce the wasting of resources, though slag iron can reclaim well, labor strength is big, and produced simultaneously dust is bigger, causes increasing environmental pollution.
Through patent and technical literature retrieval, the present domestic relevant special equipment that also do not have can be realized the sorting efficiently of slag iron, old sand, can reduce or reduce the discharging of dust pollution thing again.
Summary of the invention
Problem to be solved by this invention provides a kind of cast used sand, slag recycling equipment, its objective is the abundant recycling that realizes cast used sand and slag, and reduces the pollution to environment.
To achieve these goals, the technical scheme taked of the present invention is:
This cast used sand provided by the present invention, slag recycling equipment, described recycling equipment are provided with feeding device, screening plant, reclaimed sand retracting device, slag iron charge retracting device, dust arrester; Described screening plant, reclaimed sand retracting device, slag iron charge retracting device are sealed by same cover body, and described cover body is communicated with described dust arrester by dedusting air inducing pipeline.
The present invention also further provides following detailed technical scheme for realizing goal of the invention better, has demonstrated fully novelty of the present invention and creativeness.
1, the structure of above-mentioned cast used sand, slag recycling equipment is as follows:
Described feeding device is a bucket elevator, and bucket elevator charging aperture and bucket elevator discharging opening are located at the below and the top of described bucket elevator respectively;
The sieve nest of described screening plant is that cross section is polygonal pyramid, and the side of described pyramid is a mesh structure; Described pyramid is horizontal setting, and the bus of its foot is for being horizontally disposed with;
Described bucket elevator discharging opening is communicated with the big end opening of described pyramid;
The below of described screening plant is the reclaimed sand retracting device, and described reclaimed sand retracting device is established sand storage, and described sand storage is up big and down small bucket-shaped, and its end opening is the outlet of stock's sand;
The guide-tube structure that described slag iron charge retracting device tilts, the small end open communication of the upper port of described guide-tube structure and described pyramid.
2, improve the technical measures of old sand and slag crushing effect:
Sieve nest inside at described screening plant is provided with broken tup; Perhaps the crushing grinding body is set in the sieve nest inside of described screening plant.
3, the structure of dust arrester:
Described dust arrester is the negative pressure sack cleaner that is driven by the deduster air-introduced machine.
4, the structure of described bucket elevator:
Described bucket elevator upper/lower terminal respectively is provided with rotating shaft, the upper end rotating shaft drives defeated material belt by bucket elevator motor and reducing gear, defeated material belt is by the belt pulley transmission in upper end and the lower end rotating shaft, a plurality of little hoppers have been fixedly mounted on the described defeated material belt, defeated material belt is realized the vertical transport that makes progress fast of material by described small powder bucket in continual operation process.
5, the anti-dust pollution structure of bucket elevator:
The outside of described bucket elevator is the cover body of sealing.
6, the sieve nest structure of screening plant:
Described screening plant is a hexagonal reel, and promptly the cross section of the sieve nest of described screening plant is a regular hexagon.
The present invention adopts technique scheme, compared with prior art, has the following advantages:
Realized the automation of waste and old sand and slag treatment, both alleviated working strength of workers, improved working environment, protection workers'health, and production efficiency height; Realize the abundant recovery of various waste and old sand and slag, utilize again, reducing cost, energy savings, resource is fully used; Low by reclaimed sand epigranular, ash after the dust removal process, caking property is also low, has fully ensured the quality of reclaimed sand; And the evenly broken slag of process is the desirable feedstock of construction material, and the bushel iron material also obtains recycling, and resource is made full use of, and can not influence environment because of the stacking of slag, has further protected environment; Utilize dust arrester to receive, be collected in the dust that produces in the waste and old sand processing procedure fully, reduce or avoid the discharging of dust pollution thing, can fully guarantee to reduce or control the pollution of dust atmospheric environment.Therefore, technical scheme of the present invention has outstanding substantive distinguishing features, and obtains significant technological progress, has the value of promotion and application on industry.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are briefly explained:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the side schematic view of structure shown in Figure 1.
Be labeled as among the figure:
1, feeding device, 2, screening plant, 3, dust arrester, 4, bucket elevator charging aperture, 5, the bucket elevator discharging opening, 6, the bucket elevator motor, 7, hexagonal reel motor, 8, deduster air-introduced machine, 9, dedusting air inducing pipeline, 10, the outlet of deduster dust, 11, slag iron charge retracting device, 12, stock's sand outlet, 13, the reclaimed sand retracting device, 14, the deduster ventilating opening.
The specific embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and operation principle, the manufacturing process of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present invention, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
The of the present invention structure expressed as Fig. 1, Fig. 2, the present invention is a kind of cast used sand, slag recycling equipment, being widely used in common gray iron, the casting of cast steel class and wear-resistant medium production, is the old sand of its casting generation, the special equipment that slag recycles, utilizes.
In order to solve the problem that exists at the described present known technology of this specification background technology part and to overcome its defective, realize the abundant recycling of cast used sand and slag, and reduce goal of the invention that the technical scheme that the present invention takes is to the pollution of environment:
As depicted in figs. 1 and 2, this cast used sand provided by the present invention, slag recycling equipment, described recycling equipment are provided with feeding device 1, screening plant 2, reclaimed sand retracting device 13, slag iron charge retracting device 11, dust arrester 3; Described screening plant 2, reclaimed sand retracting device 13, slag iron charge retracting device 11 are sealed by same cover body, and described cover body is communicated with described dust arrester 3 by dedusting air inducing pipeline 9.
The effect of described feeding device 1 is to realize that old sand, slag are to screening plant 2 feeds; The effect of described screening plant 2 is that sand separates with block, and by reclaimed sand retracting device 13 and slag iron charge retracting device 11 it is reclaimed respectively; The effect of described dust arrester 3 is that the dust in old sand, the slag is absorbed.
The said equipment of the present invention is in order to solve dedusting, the production overall process prevents the problem of dust diffusion, taked totally enclosed structure, promptly under the effect of 8 air draughts of deduster air-introduced machine, deduster ventilating opening 14 air circulation, dust enters in the dust arrester 3 by dedusting air inducing pipeline 9 respectively, is absorbed by the cloth bag in the dust arrester 3 and concentrates, handles.
The present invention has realized utilizing after the processing, sorting of old sand, slag again, reducing cost, to economize on resources.Low by reclaimed sand epigranular, ash after the dust removal process, caking property is also low, has fully ensured the quality of reclaimed sand.And be the ideal material of building brick by the slag of even fragmentation, precious resources is made full use of, can not handle and cause trouble, thereby further help environmental protection because of the stacking of slag.
The present invention adopts technique scheme, and the productivity effect height has been avoided environmental pollution, has protected workers'health; Resource is fully used, and reduces production costs.
Be detailed description below to cast used sand, slag recycling equipment structure:
As depicted in figs. 1 and 2, feeding device 1 of the present invention is a bucket elevator, and bucket elevator charging aperture 4 and bucket elevator discharging opening 5 are located at the below and the top of described bucket elevator respectively;
The sieve nest of described screening plant 2 is that cross section is polygonal pyramid, and the side of described pyramid is a mesh structure;
Described pyramid is horizontal setting, and the bus of its foot is for being horizontally disposed with;
Described bucket elevator discharging opening 5 is communicated with the big end opening of described pyramid;
The below of described screening plant is a reclaimed sand retracting device 13, and described reclaimed sand retracting device 13 is established sand storage, and described sand storage is up big and down small bucket-shaped, and its end opening is stock's sand outlet 12;
The guide-tube structure that described slag iron charge retracting device 11 tilts, the small end open communication of the upper port of described guide-tube structure and described pyramid.
More than the effect of each part be:
Old sand enters little hopper by the bucket elevator charging aperture 4 in the bucket elevator, is delivered to bucket elevator discharging opening 5 and is transported in the screening plant 2.Utilize bucket elevator to realize even, quick feed, realize that old sand, slag enter in the sieve nest of screening plant 2 continuously; The oral area setting and the ground level of bucket elevator charging aperture 4 are about the same, and handled easily workman or Transport Machinery input to bucket elevator with Foundry Production with cast used sand or the slag crossed.
The sieve nest of screening plant 2 constantly rotates, because the sieve nest of described screening plant 2 is the structure of many ribs, more helps the fragmentation of block object.
Old sand, slag be through evenly broken, and by entering reclaimed sand retracting device 13 behind the screen cloth, i.e. sand storage top, by the sand storage screen cloth effectively with iron charge and sand and dust separation.Described sand storage screen cloth also should be obliquely installed, and its incline direction is that the material of the bulk of sifting out is discharged from slag iron charge retracting device 11.
The effect of described sand storage is the roughing sand of producing being used to once more after storage is handled.The monnolithic case of described sand storage as requested, the desirable regular polygon in upper end, cylindrical etc., described sand storage lower end is a funnel-form, is beneficial to load and transport with haulage vehicle.
The dust that produces in the above-mentioned course of work is siphoned away by dust arrester 3, has reached the effect of sorting and dedusting, and working efficiency also improves greatly.So this equipment of the present invention is suitable for the sorting process of slag etc. equally.Treatment facility production capacity of the present invention is: the disposal ability of slag reaches more than 3 tons/hour; The disposal ability of old sand reaches more than 5 tons/hour.
Above-mentioned dust arrester 3 fully receives the dust in the feed of collecting waste and old sand, fragmentation, sorting, the storage work of treatment overall process, has avoided the pollution to environment of the dust that produces in the production process.
In order to strengthen to the old sand of bulk and the breaking capacity of slag, improve crushing effect, the present invention is provided with broken tup in the sieve nest inside of above-mentioned screening plant 2; Perhaps the crushing grinding body is set in the sieve nest inside of described screening plant 2.
The structure of dust arrester 3 and effect:
Dust arrester 3 of the present invention is the negative pressure sack cleaners that driven by deduster air-introduced machine 8.The negative pressure sack cleaner is evacuated to the dust suction cloth bag from the gas that dedusting air inducing pipeline 9 will contain dust, and the clean gas after the filtration is discharged to the atmosphere from deduster ventilating opening 14; Dust collection is concentrated from deduster dust outlet 10 and to be discharged after after a while.
The monnolithic case of above-described negative pressure sack cleaner as requested, regular polygon, cylindrical etc. can be taked in its upper end, the deduster dust outlet 10 of described negative pressure sack cleaner lower end is a funnel-form, to help the shipment of haulage vehicle.
The structure of bucket elevator of the present invention is:
The above bucket elevator upper/lower terminal respectively is provided with rotating shaft, the upper end rotating shaft drives defeated material belt by bucket elevator motor 6 and reducing gear, defeated material belt is by the belt pulley transmission in upper end and the lower end rotating shaft, a plurality of little hoppers have been fixedly mounted on the described defeated material belt, defeated material belt is realized the vertical transport that makes progress fast of material by described small powder bucket in continual operation process.
In order to strengthen protection to environment, prevent the diffusion of dust, the outside of bucket elevator of the present invention is the cover body of sealing.
The described bucket elevator that is used for feed, its monnolithic case are vertical structure, and its cross section is square, upper end side bucket elevator discharging opening 5, and the lower end charging aperture of corresponding side bucket elevator with the upper end 4 is realized autofeed.Described bucket elevator feed-type is vertical feeding;
Screening plant 2 of the present invention is a hexagonal reel, and the cross section of the sieve nest of promptly described screening plant 2 is a regular hexagon.The monnolithic case that is described hexagonal reel is a hexagonal awl staving.Described hexagonal reel drives rotation by hexagonal reel motor 7.
When old sand after bucket elevator discharging opening 5 enters hexagonal reel in the rotation, the sieve nest of rotation drives the old sand motion, is equipped with suitable broken tup or crushing grinding body, has realized the pulverizing of block old sand.Again because the hexagonal reel wall with screen cloth, old sand is through after pulverizing, and enters sand storage after sieving by screen cloth.Described hexagonal reel integral body realizes evenly broken completely independently; Realized the classified and separated of slag iron.
In addition, the hexagonal reel profile is a hexagonal frustum staving, and charging aperture is at big end, and along with the discharging opening of sieve wall guiding small end, iron charge is concentrated and reclaimed like this in the sieve chamber for iron charge and other block in the rotation.
Described hexagonal reel is in rotary course, and old sand passes through rolling, collision realizes fragmentation, and the product after the fragmentation enters the concentrated storage of sand storage by the sieve screen apertures of hexagonal reel, manually unloads sand, utilizes from stock's sand outlet 12; The slag iron charge that leftover pieces are delivered to slag iron charge retracting device 11 by the hexagonal reel discharging opening exports, and is recycled at last.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.

Claims (7)

1. a cast used sand, slag recycling equipment, it is characterized in that: described recycling equipment is provided with feeding device (1), screening plant (2), reclaimed sand retracting device (13), slag iron charge retracting device (11), dust arrester (3); Described screening plant (2), reclaimed sand retracting device (13), slag iron charge retracting device (11) are sealed by same cover body, and described cover body is communicated with described dust arrester (3) by dedusting air inducing pipeline (9).
2. according to the described cast used sand of claim 1, slag recycling equipment, it is characterized in that: described feeding device (1) is a bucket elevator, and bucket elevator charging aperture (4) and bucket elevator discharging opening (5) are located at the below and the top of described bucket elevator respectively; The sieve nest of described screening plant (2) is that cross section is polygonal pyramid, and the side of described pyramid is a mesh structure; Described pyramid is horizontal setting, and the bus of its foot is for being horizontally disposed with; Described bucket elevator discharging opening (5) is communicated with the big end opening of described pyramid; The below of described screening plant is reclaimed sand retracting device (13), and described reclaimed sand retracting device (13) is established sand storage, and described sand storage is up big and down small bucket-shaped, and its end opening is stock's sand outlet (12); The guide-tube structure that described slag iron charge retracting device (11) tilts, the small end open communication of the upper port of described guide-tube structure and described pyramid.
3. according to the described cast used sand of claim 2, slag recycling equipment, it is characterized in that: the sieve nest inside at described screening plant (2) is provided with broken tup; Perhaps the crushing grinding body is set in the sieve nest inside of described screening plant (2).
4. according to claim 1 or 2 or 3 described cast used sands, slag recycling equipment, it is characterized in that: described dust arrester (3) is the negative pressure sack cleaner that is driven by deduster air-introduced machine (8).
5. according to claim 2 or 3 described cast used sands, slag recycling equipment, it is characterized in that: the structure of described bucket elevator is: described bucket elevator upper/lower terminal respectively is provided with rotating shaft, the upper end rotating shaft drives defeated material belt by bucket elevator motor (6) and reducing gear, defeated material belt is by the belt pulley transmission in upper end and the lower end rotating shaft, a plurality of little hoppers have been fixedly mounted on the described defeated material belt, defeated material belt is realized the vertical transport that makes progress fast of material by described small powder bucket in continual operation process.
6. according to the described cast used sand of claim 5, slag recycling equipment, it is characterized in that: the outside of described bucket elevator is the cover body of sealing.
7. according to claim 2 or 3 described cast used sands, slag recycling equipment, it is characterized in that: described screening plant (2) is a hexagonal reel, and the cross section of the sieve nest of promptly described screening plant (2) is a regular hexagon.
CN2010101928137A 2010-06-07 2010-06-07 Cast used sand and slag recycling equipment Active CN101862810B (en)

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Application Number Priority Date Filing Date Title
CN2010101928137A CN101862810B (en) 2010-06-07 2010-06-07 Cast used sand and slag recycling equipment

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CN101862810A true CN101862810A (en) 2010-10-20
CN101862810B CN101862810B (en) 2012-11-21

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102009122A (en) * 2010-12-09 2011-04-13 柳州市奥凯工程机械有限公司 Waste foundry sand regenerating process method
CN105149504A (en) * 2015-09-30 2015-12-16 金刚新材料股份有限公司 Production line of precision casting sand
CN111672849A (en) * 2020-05-27 2020-09-18 四川蓝鼎新材料有限公司 Gypsum powder dust automatic processing device
CN111688016A (en) * 2020-05-27 2020-09-22 四川蓝鼎新材料有限公司 Integrated production facility of gypsum board gives sound insulation

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Publication number Priority date Publication date Assignee Title
CN1030374A (en) * 1987-07-03 1989-01-18 久保田铁工株式会社 Casting sand recycling device
CN2843660Y (en) * 2005-08-09 2006-12-06 秦皇岛市宇田科技有限公司 Hot investment casting molding sand recycling equipment
CN201082457Y (en) * 2007-09-25 2008-07-09 齐齐哈尔轨道交通装备有限责任公司 Flask shaker
WO2009043838A1 (en) * 2007-09-29 2009-04-09 Kuenkel-Wagner Prozesstechnologie Gmbh Selection of a used sand stream occurring after casting production and device therefor
CN201271730Y (en) * 2008-09-24 2009-07-15 刘则斌 Lost foam casting apparatus
CN201684884U (en) * 2010-06-07 2010-12-29 安徽省宁国新宁实业有限公司 Foundry sand and furnace slag recovering treatment equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1030374A (en) * 1987-07-03 1989-01-18 久保田铁工株式会社 Casting sand recycling device
CN2843660Y (en) * 2005-08-09 2006-12-06 秦皇岛市宇田科技有限公司 Hot investment casting molding sand recycling equipment
CN201082457Y (en) * 2007-09-25 2008-07-09 齐齐哈尔轨道交通装备有限责任公司 Flask shaker
WO2009043838A1 (en) * 2007-09-29 2009-04-09 Kuenkel-Wagner Prozesstechnologie Gmbh Selection of a used sand stream occurring after casting production and device therefor
CN201271730Y (en) * 2008-09-24 2009-07-15 刘则斌 Lost foam casting apparatus
CN201684884U (en) * 2010-06-07 2010-12-29 安徽省宁国新宁实业有限公司 Foundry sand and furnace slag recovering treatment equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102009122A (en) * 2010-12-09 2011-04-13 柳州市奥凯工程机械有限公司 Waste foundry sand regenerating process method
CN102009122B (en) * 2010-12-09 2013-01-23 柳州市奥凯工程机械有限公司 Waste foundry sand regenerating process method
CN105149504A (en) * 2015-09-30 2015-12-16 金刚新材料股份有限公司 Production line of precision casting sand
CN105149504B (en) * 2015-09-30 2017-05-10 金刚新材料股份有限公司 Production line of precision casting sand
CN111672849A (en) * 2020-05-27 2020-09-18 四川蓝鼎新材料有限公司 Gypsum powder dust automatic processing device
CN111688016A (en) * 2020-05-27 2020-09-22 四川蓝鼎新材料有限公司 Integrated production facility of gypsum board gives sound insulation
CN111672849B (en) * 2020-05-27 2021-08-17 四川蓝鼎新材料有限公司 Gypsum powder dust automatic processing device
CN111688016B (en) * 2020-05-27 2021-09-03 四川蓝鼎新材料有限公司 Integrated production facility of gypsum board gives sound insulation

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Application publication date: 20101020

Assignee: Anhui Ningguo Xining Industry Co., Ltd.

Assignor: Anhui Ningguo Xinning Industrial Co., Ltd.

Contract record no.: 2014340000022

Denomination of invention: Cast used sand and slag recycling equipment

Granted publication date: 20121121

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