CN108817312B - A kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates - Google Patents
A kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates Download PDFInfo
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- CN108817312B CN108817312B CN201810596230.7A CN201810596230A CN108817312B CN 108817312 B CN108817312 B CN 108817312B CN 201810596230 A CN201810596230 A CN 201810596230A CN 108817312 B CN108817312 B CN 108817312B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
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- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to die casting core material technical fields, specifically disclose a kind of mechanical regeneration method of inorganic overlay film hygrometric state antiquated sand of silicates, the following steps are included: (1) is broken by silicate antiquated sand, screening, by broken antiquated sand size controlling less than 4 mesh, water content control is being lower than 1.5 ‰；(2) processing of milling is carried out to the antiquated sand after screening, adds sand speed control in 15-50Kg/s, revolving speed is controlled in 50-200r/min, time 30-90s；(3) multistage scouring is carried out to antiquated sand；(4) it will be mixed to form water sand body with cleaning solution after antiquated sand dust removal of pneumatic separation, water sand body be ultrasonically treated, the processing time is 10-30min；(5) antiquated sand is separated with waste liquid, dries antiquated sand；(6) antiquated sand mill and multistage scouring, grinding time 10-60s, scouring series are 3-9 grades；Using the regeneration method of application scheme to silicates antiquated sand regeneration treatment after, antiquated sand is reusable, reduce antiquated sand discharge amount, reduce the wasting of resources.
Description
Technical field
The invention belongs to die casting core material technical field more particularly to a kind of inorganic overlay film hygrometric state of silicates are useless
The mechanical regeneration method of sand.
Background technique
Silicate is from a wealth of sources, cheap, non-toxic and tasteless as a kind of inorganic chemistry binder, is widely used at present
In casting industry.Compared with organic resin binder, silicate binder is generated without toxic gas in application process, in ring
Guarantor's standard increasingly strict today, silicates molding sand are considered as the most possible molding sand type for realizing Green foundry.But
Silicates molding sand there are problems that being difficult to regeneration, lead to a large amount of discharges of silicate antiquated sand, this not only brings to environment
Serious pollution, also results in the great wasting of resources.
Summary of the invention
The purpose of the present invention is to provide a kind of mechanical regeneration methods of the inorganic overlay film hygrometric state antiquated sand of silicates, can make silicon
Barbiturates antiquated sand is reused after regeneration, is reduced antiquated sand discharge amount to reach, is reduced the environment protecting of the wasting of resources.
In order to achieve the above object, a kind of base case of the invention are as follows: machine of the inorganic overlay film hygrometric state antiquated sand of silicates
Tool regeneration method, comprising the following steps:
(1) silicate antiquated sand is crushed after magnetic separation, sieved, it is aqueous by broken antiquated sand size controlling less than 4 mesh
Amount control is being lower than 1.5 ‰；
(2) it to treated that antiquated sand carries out processing of milling through step (1), mills and is carried out using three balance wheel grinding mills, add sand
Speed control is controlled in 15-50Kg/s, the revolving speed for processing of milling in 50-200r/min, grinding time 30-90s；Mill processes are logical
Inlet air, ventilation quantity are controlled in 0-10000m3Between/min, and ventilation quantity is greater than 0m3/min；
(3) multistage scouring is carried out to through step (2) treated antiquated sand, cleans series 3-12 grade, scrub process adds sand
Amount is 30-140Kg/min, and the revolving speed of scrub process is controlled in 1000-3000r/min；
(4) it will be mixed to form water sand body, antiquated sand with cleaning solution after the antiquated sand dust removal of pneumatic separation after cleaning in step (3)
Mass parts ratio with cleaning solution is antiquated sand: cleaning solution=1:1-2 is ultrasonically treated water sand body, and the processing time is 10-
30min；
(5) antiquated sand after the ultrasonic treatment in the step (4) is separated with waste liquid, antiquated sand, which enters roaster, dries, waste liquid into
Enter processing pond recycling；
(6) antiquated sand after drying in step (5) mill and multistage scouring, grinding time 10-60s are cleaned
Series is 3-9 grades；
(7) finished bin will be sent into after the sand dust removal of pneumatic separation after cleaning in step (6).
The beneficial effect of this base case is:
1. realizing the regeneration of the inorganic overlay film hygrometric state antiquated sand of silicates, water consumption is few, and waste water can be through simply heavy
It is recycled after drop processing；Reclaimed sand recovery utilization rate is up to 90%, is much higher than common regeneration method, and treatment effect is preferable,
It is suitble to industrial mass production, reclaimed sand can do precoated sand, resin sand etc. instead of fresh sand completely or partially and use.
2, water content in antiquated sand is excessively high to be unfavorable for removing adhesive film, and water content control is being lower than 1.5 ‰, the effect milled
More preferably.The fine powder of sand grain surface remaining silicate and adherency is removed by milling, control partial size can more effectively mill, blow
Wind is conducive to sandy mobile, grind each sand can sufficiently.By the state modulator in treatment process of milling upper
It states while the residual adhesive film of antiquated sand can be made sufficiently to be milled in range, avoids sand grains itself by excessive grinding.
3, antiquated sand is ultrasonically treated, on the one hand can destroys the suction-operated of silicate and sand grain surface, on the other hand
Crack silicate surfaces, bubble pierces crackle, reaches sand grain surface, is detached from silicate by vibration, guarantees silicic acid
The regenerated effect of the inorganic antiquated sand of salt.
Further, in the step (2), add sand speed control in 20-30Kg/s, the revolving speed for processing of milling is controlled in 80-
160r/min, grinding time 40-60s；Mill processes are passed through wind, and ventilation quantity is controlled in 1000-6000m3/min.Applicant passes through
Test of many times discovery, within the above range by the state modulator milled, the effect of antiquated sand reclaiming is preferable.
Further, in the step (3), series 3-9 grades is cleaned, the sand feeding amount of scrub process is 35-100Kg/min, is wiped
The revolving speed for washing processing is controlled in 1000-2000r/min.Applicant has found by test of many times, by the state modulator of scouring upper
It states in range, the effect of antiquated sand reclaiming is preferable.
Further, cleaning solution is acid solution in the step (4).
Further, the acid solution is oxalic acid.Strong acid can in simultaneously with remaining silicate subtract in oxalic acid conduct
Few corrosion to equipment.
Further, the drying temperature in the step (5) is 100-500 DEG C, time 30-120min.The purpose of drying
It is to reduce moisture in antiquated sand, so that the adhesive film on antiquated sand surface is become brittleness from toughness, while making the different material in adhesive film film
There is different expansion behaviors, convenient for removing the adhesive film.
Further, the scouring of antiquated sand uses regeneration swaging machine in the step (3).
Further, Spiral sand-water separator is selected in the separation of the antiquated sand in the step (5) and waste liquid.
Further, the three balance wheel grinding mills used in the step (2) include cylinder of milling, and are equipped with the cylinder that will mill in cylinder of milling
It is divided into the demarcation plate of grinding house and gas chamber, grinding house is located at the top of demarcation plate, and demarcation plate is equipped with multiple blast caps；Grinding house
Top be equipped with plus sand mouth and exhaust outlet；It mills and is rotatably connected to transmission shaft in cylinder, connecting rod, connecting rod are fixed on transmission shaft
On be fixed between demarcation plate formed angle scraper plate；It is fixed with drive rod on transmission shaft, is rotatably connected to position on drive rod
Abrasive wheel above scraper plate, grinding take turns between the inner wall of cylinder of milling that there are the distances of 0.2-1cm.
When transmission shaft rotates, abrasive wheel, scraper plate rotate by center of rotation of transmission shaft, can will divide when scraper plate rotates
Sand grains on partition scoops up, to upthrow, and as the air-flow being passed through jumps in grinding house, part sand impinging is in cylinder of milling
Wall, part sand grains fall in abrasive wheel between cylinder of milling in gap, and part sand grains falls in behind the surface of abrasive wheel and be ground wheel
It throws away, collision and friction effect between sand grains and sand grains, between sand grains and cylinder of milling between sand grains and abrasive wheel can remove
The fine powder of sand grain surface remaining silicate and adherency.Abrasive wheel can occur certainly while being rotated centered on transmission shaft
Turn, abrasive wheel mills to antiquated sand, rubbing, can effectively wipe the adhesive film on antiquated sand surface, and improve sand grains roundness.It is grinding
During emery wheel revolution and rotation, abrasive wheel can push forward antiquated sand, and under the action of abrasive wheel, antiquated sand also can be to upthrow
It rises.It is milled using this three balance wheel grinding mill to antiquated sand, mechanicals efforts of the antiquated sand by stereoscopic three-dimensional, milling efficiency is very
Significantly, it can effectively remove the adhesive film on antiquated sand surface and improve the roundness of sand grains.
Further, connecting rod is equipped with three, and three connecting rods are circumferentially uniformly distributed along transmission shaft；Drive rod is equipped with three,
Three drive rods are circumferentially uniformly distributed along transmission shaft.
Detailed description of the invention
Fig. 1 is the main view of the three balance wheel grinding mills used in the embodiment of the present invention；
Fig. 2 is the top view in Fig. 1.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description 1-2 includes: mill cylinder 10, gas chamber 11, grinding house 12 plus sand mouth 13, air draft
Mouth 14, demarcation plate 20, blast cap 21, connecting rod 30, scraper plate 31, transmission shaft 40, drive rod 50, abrasive wheel 51.
Embodiment 1
A kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates, comprising the following steps:
(1) silicate antiquated sand is crushed after magnetic separation, sieved, it is aqueous by broken antiquated sand size controlling less than 4 mesh
Amount control is being lower than 1 ‰；
(2) it to treated that antiquated sand carries out processing of milling through step (1), mills and is carried out using three balance wheel grinding mills, add sand
Speed control is controlled in 25Kg/s, the revolving speed for processing of milling in 100r/min, grinding time 60s；Mill processes are passed through wind, ventilation
Amount control is in 3000m3/min；
(3) it selects regeneration swaging machine to carry out multistage scouring to through step (2) treated antiquated sand, cleans 6 grades of series, clean
The sand feeding amount of processing is 40Kg/min, and the revolving speed of scrub process is controlled in 1300r/min；
(4) it will be mixed to form water sand body, antiquated sand with cleaning solution after the antiquated sand dust removal of pneumatic separation after cleaning in step (3)
Be antiquated sand with the mass parts ratio of cleaning solution: cleaning solution=1:1.2 is ultrasonically treated water sand body, and the processing time is
30min；Cleaning solution used is oxalic acid；
(5) Spiral sand-water separator is selected to separate antiquated sand of the step after ultrasonic treatment in rapid (4) with waste liquid, antiquated sand enters
Roaster drying, drying temperature are 300-400 DEG C, time 60min；Waste liquid enters processing pond recycling；
(6) antiquated sand after drying in step (5) mill and multistage scouring, grinding time 40s clean series
It is 6 grades；
(7) finished bin will be sent into after the sand dust removal of pneumatic separation after cleaning in step (6).
Three balance wheel grinding mills used in step (2) include cylinder 10 of milling, and the cylinder 10 that will mill is fixed in cylinder 10 of milling and is separated
For the demarcation plate 20 of grinding house 12 and gas chamber 11, grinding house 12 is located at the top of demarcation plate 20, and demarcation plate 20 is equipped with multiple wind
Cap 21, the gas being passed through toward gas chamber 11 can be entered in grinding house 12 by blast cap 21.The top of grinding house 12 is equipped with plus sand mouth
13 and exhaust outlet 14, the side wall of grinding house 12 be provided with sand export.Mill 10 bottom of cylinder center at be rotatably connected to across separation
Plate 20 and the transmission shaft 40 being located in grinding house 12 are fixed with three on transmission shaft 40 along the circumferential equally distributed company of transmission shaft 40
Extension bar 30 is fixed with the scraper plate 31 that lower end is contacted with demarcation plate 20 in connecting rod 30, and scraper plate 31 is obliquely installed, and scraper plate 31 and separates
The angle of 30-60 degree is formed between plate 20, forms 50 degree of angle between scraper plate 31 and demarcation plate 20 in the present embodiment.Transmission
Three are fixed on axis 40 to be rotatably connected to along the circumferential equally distributed drive rod 50 of transmission shaft 40, drive rod 50 positioned at scraper plate
The abrasive wheel 51 of 31 tops, there are the distance of 0.2-1cm, preferably 0.2-0.6cm between the inner wall of abrasive wheel 51 to cylinder 10 of milling,
And in the present embodiment, there are the distances of 0.5cm between the inner wall of abrasive wheel 51 to cylinder 10 of milling.
When milling to antiquated sand, transmission shaft 40 is made to rotate, the speed control of rotation is in 50-200r/min (this reality
Apply in example and control velocity of rotation in 100r/min), toward adding sand mouth 13 that antiquated sand to be milled is added, add sand speed control in 15-
50Kg/s (in the present embodiment will plus sand speed control in 25Kg/s), be passed through wind toward gas chamber 11, ventilation quantity is controlled in 3000m3/
Min, the wind being passed through can be entered in grinding house 12 by blast cap 21.When transmission shaft 40 rotates, abrasive wheel 51, scraper plate are driven first
31 are rotated with transmission shaft 40 for center of rotation, and scraper plate 31 can scoop up the sand grains on demarcation plate 20 when rotating, to upthrow,
As air-flow jumps in grinding house 12, part sand impinging in the inner wall of cylinder 10 of milling, part sand grains fall in abrasive wheel 51 with
Mill between cylinder 10 in gap, part sand grains falls in behind the surface of abrasive wheel 51 and is ground wheel 51 and throws away, sand grains and sand grains it
Between, the collision between sand grains and cylinder 10 of milling between sand grains and abrasive wheel 51 and friction effect, sand grain surface residual can be removed
Silicate and adherency fine powder.Since sand grains can be filled between abrasive wheel 51 and cylinder 10 of milling, under the action of frictional force,
Rotation can occur while rotating centered on transmission shaft 40 for abrasive wheel 51, and abrasive wheel 51 mills to antiquated sand, rubbing,
The adhesive film on antiquated sand surface can be effectively wiped, and improve sand grains roundness.During the revolution of abrasive wheel 51 and rotation, grind
Emery wheel 51 can push forward antiquated sand, and under the action of abrasive wheel 51, antiquated sand can also be thrown upwards.In this process, it is passed through
Gas is other than applying upward active force to antiquated sand, moreover it is possible to take away the dust generated during rubbing of milling, dust finally can
It is discharged together from exhaust outlet 14 with gas.
Embodiment 2
A kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates, comprising the following steps:
(1) silicate antiquated sand is crushed after magnetic separation, sieved, it is aqueous by broken antiquated sand size controlling less than 6 mesh
Amount control is being lower than 1 ‰；
(2) it to treated that antiquated sand carries out processing of milling through step (1), mills and is carried out using three balance wheel grinding mills, add sand
Speed
Control is controlled in 28Kg/s, the revolving speed for processing of milling in 140r/min, grinding time 60s；Mill processes are passed through wind,
Ventilation quantity is controlled in 4000m3/min；
(3) it selects regeneration swaging machine to carry out multistage scouring to through step (2) treated antiquated sand, cleans 9 grades of series, clean
The sand feeding amount of processing is 50Kg/min, and the revolving speed of scrub process is controlled in 1600r/min；
(4) it will be mixed to form water sand body, antiquated sand with cleaning solution after the antiquated sand dust removal of pneumatic separation after cleaning in step (3)
Be antiquated sand with the mass parts ratio of cleaning solution: cleaning solution=1:1.5 is ultrasonically treated water sand body, and the processing time is
30min；Cleaning solution used is oxalic acid；
(5) Spiral sand-water separator is selected to separate antiquated sand of the step after ultrasonic treatment in rapid (4) with waste liquid, antiquated sand enters
Roaster drying, drying temperature are 320-380 DEG C, time 60min；Waste liquid enters processing pond recycling；
(6) antiquated sand after drying in step (5) mill and multistage scouring, grinding time 40s clean series
It is 6 grades；
(7) finished bin will be sent into after the sand dust removal of pneumatic separation after cleaning in step (6).
Embodiment 3
A kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates, comprising the following steps:
(1) silicate antiquated sand is crushed after magnetic separation, sieved, it is aqueous by broken antiquated sand size controlling less than 6 mesh
Amount control is being lower than 1 ‰；
(2) it to treated that antiquated sand carries out processing of milling through step (1), mills and is carried out using three balance wheel grinding mills, add sand
Speed
Control is controlled in 35Kg/s, the revolving speed for processing of milling in 160r/min, grinding time 68s；Mill processes are passed through wind,
Ventilation quantity is controlled in 6000m3/min；
(3) it selects regeneration swaging machine to carry out multistage scouring to through step (2) treated antiquated sand, cleans 6 grades of series, clean
The sand feeding amount of processing is 70Kg/min, and the revolving speed of scrub process is controlled in 2000r/min；
(4) it will be mixed to form water sand body, antiquated sand with cleaning solution after the antiquated sand dust removal of pneumatic separation after cleaning in step (3)
Be antiquated sand with the mass parts ratio of cleaning solution: cleaning solution=1:1.6 is ultrasonically treated water sand body, and the processing time is
30min；Cleaning solution used is oxalic acid；
(5) Spiral sand-water separator is selected to separate antiquated sand of the step after ultrasonic treatment in rapid (4) with waste liquid, antiquated sand enters
Roaster drying, drying temperature are 300-400 DEG C, time 60min；Waste liquid enters processing pond recycling；
(6) antiquated sand after drying in step (5) mill and multistage scouring, grinding time 40s clean series
It is 8 grades；
(7) finished bin will be sent into after the sand dust removal of pneumatic separation after cleaning in step (6).
Respectively to through embodiment 1-3 treated reclaimed sand and without the inorganic overlay film of silicates of any working process
The sour consumption value of sand hygrometric state antiquated sand, clay content, pH value are detected, and table 1 is obtained:
Table 1
Analyze conclusion:
According to the data of table 1 it is found that the inorganic precoated sand hygrometric state of silicates handled by the present patent application technical solution
Antiquated sand, sour consumption value, clay content, pH value are useless well below the inorganic precoated sand hygrometric state of silicates without any working process
Sand, the use standard after capable of meeting the inorganic precoated sand hygrometric state antiquated sand regeneration of silicates, can put into and reuse, be effectively reduced
Cost.
Claims (10)
1. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates, it is characterised in that: the following steps are included:
(1) silicate antiquated sand is crushed after magnetic separation, sieved, by broken antiquated sand size controlling less than 4 mesh, water content control
System is being lower than 1.5 ‰；
(2) it to treated that antiquated sand carries out processing of milling through step (1), mills and is carried out using three balance wheel grinding mills, add sand speed
Control is controlled in 15-50Kg/s, the revolving speed for processing of milling in 50-200r/min, grinding time 30-90s；Mill processes are passed through
Wind, ventilation quantity are controlled in 0-10000m3Between/min, and ventilation quantity is greater than 0m3/min；
(3) multistage scouring is carried out to through step (2) treated antiquated sand, cleans series 3-12 grades, the sand feeding amount of scrub process is
The revolving speed of 30-140Kg/min, scrub process are controlled in 1000-3000r/min；
(4) it be mixed to form water sand body with cleaning solution after the antiquated sand dust removal of pneumatic separation after cleaning in the step (3), antiquated sand and clear
The mass parts ratio of washing lotion is antiquated sand: cleaning solution=1:1-2 is ultrasonically treated water sand body, and the processing time is 10-30min；
(5) antiquated sand after ultrasonic treatment in step (4) is separated with waste liquid, antiquated sand enters roaster drying, and waste liquid enters place
Pond is managed to be recycled；
(6) antiquated sand after drying in step (5) mill and multistage scouring, grinding time 10-60s clean series
It is 3-9 grades；
(7) finished bin will be sent into after the sand dust removal of pneumatic separation after cleaning in step (6).
2. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 1, feature exist
In: in the step (2), add sand speed control in 20-30Kg/s, the revolving speed for processing of milling is controlled in 80-160r/min, milled
Time 40-60s；Mill processes are passed through wind, and ventilation quantity is controlled in 1000-6000m3/min。
3. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 1, feature exist
In: in the step (3), series 3-9 grades is cleaned, the sand feeding amount of scrub process is 35-100Kg/min, the revolving speed of scrub process
Control is in 1000-2000r/min.
4. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 1, feature exist
In: cleaning solution is acid solution in the step (4).
5. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 4, feature exist
In: the acid solution is oxalic acid.
6. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 1, feature exist
In: the drying temperature in the step (5) is 100-500 DEG C, time 30-120min.
7. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 1, feature exist
In: the scouring of antiquated sand is using regeneration swaging machine in the step (3).
8. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 1, feature exist
In: Spiral sand-water separator is selected in the separation of antiquated sand and waste liquid in the step (5).
9. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 1, feature exist
In: the three balance wheel grinding mills used in the step (2) include cylinder of milling, and are equipped with the cylinder that will mill in cylinder of milling and are divided into grinding house
With the demarcation plate of gas chamber, grinding house is located at the top of demarcation plate, and demarcation plate is equipped with multiple blast caps；The top of grinding house, which is equipped with, to be added
Sand mouth and exhaust outlet；Mill and be rotatably connected to transmission shaft in cylinder, connecting rod is fixed on transmission shaft, be fixed in connecting rod with point
The scraper plate of angle is formed between partition；It is fixed with drive rod on transmission shaft, is rotatably connected to above scraper plate on drive rod
Abrasive wheel, grinding take turns between the inner wall of cylinder of milling that there are the distances of 0.2-1cm.
10. a kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates according to claim 9, feature exist
In: connecting rod is equipped with three, and three connecting rods are circumferentially uniformly distributed along transmission shaft；Drive rod is equipped with three, three drive rod edges
Transmission shaft is circumferentially uniformly distributed.
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| CN109226668A (en) * | 2018-11-21 | 2019-01-18 | 合肥仁创铸造材料有限公司 | A kind of inorganic sand regeneration method |
| CN110899614B (en) * | 2019-11-14 | 2021-03-30 | 安徽省繁昌县皖南阀门铸造有限公司 | A waste sand recycling device |
| CN111468673B (en) * | 2020-04-24 | 2021-06-25 | 南阳仁创砂业科技有限公司 | Regeneration method of used foundry sand |
| CN111702126A (en) * | 2020-07-08 | 2020-09-25 | 南阳仁创砂业科技有限公司 | Inorganic binder used sand mechanical wet regeneration device and method |
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| CN102078915A (en) * | 2009-11-27 | 2011-06-01 | 天津市澳康建筑装饰工程有限责任公司 | Used water glass sand regeneration method |
| KR101173053B1 (en) * | 2010-06-30 | 2012-08-13 | 현대자동차주식회사 | Separation system for binder of waste molding sand using ultrasonic |
| CN102000764A (en) * | 2010-12-17 | 2011-04-06 | 重庆长江造型材料（集团）有限公司 | Chemical regeneration method in casting waste sand disposing process |
| CN103240386B (en) * | 2012-02-01 | 2015-06-03 | 重庆汇亚通铸造材料有限公司 | Milling regeneration method of used water glass sands |
| CN105728641B (en) * | 2016-03-01 | 2018-03-13 | 潍柴动力股份有限公司 | Cast wet type mixing regenerating used method |
| CN105945216A (en) * | 2016-05-26 | 2016-09-21 | 合肥市田源精铸有限公司 | Waste sand core regeneration treatment method of precoated sand |
| CN107983907A (en) * | 2017-11-28 | 2018-05-04 | 合肥仁创铸造材料有限公司 | The method of recycling cast waste sand |
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