CN107983907A - The method of recycling cast waste sand - Google Patents
The method of recycling cast waste sand Download PDFInfo
- Publication number
- CN107983907A CN107983907A CN201711215811.3A CN201711215811A CN107983907A CN 107983907 A CN107983907 A CN 107983907A CN 201711215811 A CN201711215811 A CN 201711215811A CN 107983907 A CN107983907 A CN 107983907A
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- Prior art keywords
- sand
- cast waste
- recycling
- fine
- waste sand
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Classifications
-
- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The method of recycling cast waste sand of the present invention belongs to environmental friendly regenerated field, more particularly to a kind of recovery and treatment method of discarded mold material.Its purpose is to provide a kind of process compact and reasonable, the method for recycling cast waste sand easy to operate, regeneration rate is high.The method of recycling cast waste sand of the present invention is crushed including (1) cast waste sand；(2) roast；(3) wet method stirs；(4) mill；(5) selection by winnowing, magnetic separation.The method of the recycling cast waste sand of the present invention stirs heating, wet method, the process of mechanical disruption is more compact and reasonable, and the quality of gained reclaimed sand is higher, and regeneration rate is high, therefore the technique has good technology can performance and applicability；There is no poisonous and hazardous waste gas and wastes to discharge in the method processing procedure of the present invention, realize the standard of zero-emission, realize the purpose of environmental protection.
Description
Technical field
The invention belongs to environmental friendly regenerated field, more particularly to a kind of recovery and treatment method of discarded mold material.
Background technology
Regenerate with the continuous renewal of founding materials, inorganic precoated sand starts to occur.Since inorganic precoated sand has very well
Environmental-protecting performance, greatly reduce the discharge of useless cigarette, exhaust gas that traditional molding sand occurs in use, nothing when casting and using
Machine precoated sand is widely used, and the inorganic precoated sand antiquated sand produced therewith also begins to largely occur.It is inorganic at this stage to cover
Film sand forms solid waste after being mixed with common resin sand, but corresponding regeneration recovering means few people refer to.One
The inorganic precoated sand of kind and organic resin sand combining and regenerating technique are exactly to realize casting inorganic precoated sand and organic resin sand
The regeneration recycling of mixed sand and the function of huge profit.
The regenerated object of antiquated sand is mainly single antiquated sand at this stage, and the antiquated sand of general regeneration recycling mainly has phenolic resin
Sand, clay-bonded sand, modified sodium silicate sand etc..Mix the mixing such as phenol resin sand and tide mould sand, furan resin-sand and cold-box sand
Class sand.The recovery process of antiquated sand is mainly that dry reclamation, thermal reclamation, wet reclamation or a variety of regenerations mix again
Raw body system.
Existing recovery process faces problems with：First, existing inorganic precoated sand and organic resin sand antiquated sand lacks
Effective recovery technology technique, thus inorganic overlay film antiquated sand will become solid waste and can not recycling；Existing time at the same time
Receipts means need to solve there is also problems, and dry reclamation primary recycling effect is poor to be needed to carry out multistage dry reclamation；It is wet
Generating apparatus is huge, complicated again for method, and floor space is larger, high energy consumption；The regeneration object of combining and regenerating at this stage substantially without reference to
To the mixed sand of inorganic precoated sand and organic resin sand.The mixed sand for causing inorganic precoated sand and organic resin sand is faced nothing by this
The poverty-stricken present situation of method regeneration recycling, so as to bring huge financial burden to enterprise, also the resource and environment to China are brought huge
Big pressure.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of process compact and reasonable, casting easy to operate, regeneration rate is high
Antiquated sand regeneration method, the reclaimed sand quality that this method obtains is high, and safety and environmental protection, high financial profit, wherein cast waste sand
For inorganic precoated sand and/or organic resin sand sand core.
The present invention relates to a kind of method of recycling cast waste sand, the described method comprises the following steps：(1) cast waste sand is broken
It is broken；(2) roast；(3) wet method stirs；(4) mill；(5) selection by winnowing, magnetic separation；The cast waste sand is inorganic precoated sand and/or organic
Resin sand sand core.
Preferably, step (6) screening, pack are also carried out after the method step (5).
Preferably, the step (1) carries out according to the following steps：Cast waste sand is broken into fine sand, facilitates access for roasting
Stove.The fine sand being broken into can pass through 3mm × 3mm sieve apertures.
Preferably, the step (2) carries out according to the following steps：By fine sand of the step (1) after broken in 340~360 DEG C of roastings
Burn, remove the inert coating on inorganic precoated sand surface, then roasted at 650 DEG C by the organic matter completely burned in antiquated sand totally, roasting
The burning time is 20~40min.
Preferably, the step (3) carries out according to the following steps：Fine sand after step (2) is roasted, which moves into, to be equipped with
Stir in the stirring pool of the hydrochloric acid solution of 0.28mol/L, on the one hand cool down for sand, in addition neutralize the alkaline matter in sand
Processing, fine sand and waste liquid are separated by grit water separator, and waste liquid is crossed to harmless emission after handling, and the clear water recycled in waste liquid returns
Stirring pool.
Preferably, the step (4) carries out according to the following steps：Fine sand surface after wet method stirs is removed by mechanical disruption
Inert coating, to clear up the residual impurity on reclaimed sand surface.
Preferably, the step (5) carries out according to the following steps：Fine sand after milling is by selection by winnowing by the fine powder in reclaimed sand
Remove, removed the magnetisable material in reclaimed sand by magnetic separation.The following sand content control of 200 mesh exists in fine sand after selection by winnowing
Below 0.5wt%, 140 mesh above sands are controlled in below 3wt%.
Preferably, the step (6) carries out according to the following steps：Different fineness will be pressed by the fine sand after step (5) processing
Screening, pack, it is desirable to which inner bag is moisture-proof plastic bag sealing, and outer bag packs reclaimed sand for woven bag.
The method difference from prior art of recycling cast waste sand of the present invention is the following aspects：
1) technical elements；The technique of the present invention be combining and regenerating technique, and main regeneration object is inorganic precoated sand and organic
The mixing antiquated sand of resin sand.The technique can efficiently make the inert coating on grains of sand surface be loosened or come off with the grains of sand, Neng Gouzhun
True grasp and control calcination temperature and time, make heating, wet method stirring, the process of mechanical disruption more compact and reasonable, institute
It is higher to state the quality of reclaimed sand, regeneration rate is high, therefore the technique has good technology can performance and applicability.
2) in terms of environmental protection；The technique of the present invention can be directed to the inorganic of single organic or inorganic antiquated sand and mixing
Precoated sand and organic resin sand carry out regeneration recycling, avoid the dirt to surrounding environment and soil reclamation after solid waste is stacked
Dye, while reclaiming it also avoid the environmental disruption that is brought to surrounding mineral products during mining.In whole technical process in antiquated sand
Organic matter realizes completely burned, is discharged without poisonous and hazardous waste gas and wastes, realizes the standard of zero-emission, realize environment
The purpose of protection.
3) in terms of economic benefit；Used using some or all of fresh sand that substitutes of reclaimed sand made from the method for the present invention,
The consumption of fresh sand can be substantially reduced, reduces the discharge of waste and old inorganic precoated sand and organic resin antiquated sand, reduces fresh sand
Acquisition expenses and antiquated sand discharge stack expense, save construction of warehouse and occupancy expenses, while reduce foundry enterprise
Production cost.Realize recycling for resource so that antiquated sand regeneration obtains good economic benefit.
4) in terms of protection of resources；The reclaimed sand of the technique productions of the present invention can partly or completely substitute fresh sand to be made again
In Foundry Production, positive effect is played in terms of reducing the consumption of increasingly deficient silica sand resource, then protection of resources.
Brief description of the drawings
Fig. 1 is the process flow chart of the present invention；
Fig. 2 is reclaimed sand made from the method for recycling cast waste sand of the present invention.
Embodiment
The method of the recycling cast waste sand of the present invention is further described by following embodiments and checking test.
Embodiment 1
As shown in Figure 1, the method for the recycling cast waste sand of the present embodiment carries out according to the following steps：
(1) cast waste sand crushes：Inorganic precoated sand and organic resin sand sand core are become into fine sand after broken, easy into
Enter roaster, the fine sand being broken into can pass through 3mm × 3mm sieve apertures.
(2) roast：Fine sand of the step (1) after broken is roasted at 340 DEG C, removes the inert coating on inorganic precoated sand surface,
Then roasted at 650 DEG C by the organic matter completely burned in antiquated sand totally.
(3) wet method stirs：Fine sand after step (2) is roasted moves into the stirring pool of the hydrochloric acid solution equipped with 0.28mol/L
Middle stirring, on the one hand cools down for sand, in addition by the alkaline matter neutralisation treatment in sand, fine sand is separated by grit water separator
And waste liquid, waste liquid is crossed to harmless emission after handling, the clear water recycled in waste liquid returns to stirring pool.
(4) mill：The inert coating on fine sand surface after wet method stirring is removed by mechanical disruption, to clear up reclaimed sand surface
Residual impurity.
(5) selection by winnowing, magnetic separation：Fine sand after milling is removed the fine powder in reclaimed sand by selection by winnowing, will be regenerated by magnetic separation
Magnetisable material in sand removes.The following sand content of 200 mesh is controlled in below 0.5wt%, 140 mesh above sand in fine sand after selection by winnowing
Son control is in below 3wt%.
(6) sieve, pack：Fine sand after step (5) processing is sieved by different fineness, is packed, it is desirable to which inner bag is
Moisture-proof plastic bag sealing, outer bag pack reclaimed sand for woven bag.
Embodiment 2
The operating procedure of the method for the recycling cast waste sand of the present embodiment and the difference of embodiment 1 are：This implementation
Step (1) processing raw material be inorganic precoated sand sand core in example, the temperature that roasting uses in step (2) for 360 DEG C, other operate and
Embodiment 1 is identical.
Embodiment 3
The operating procedure of the method for the recycling cast waste sand of the present embodiment and the difference of embodiment 1 are：This implementation
Step (1) processing raw material be organic resin sand sand core in example, the temperature that roasting uses in step (2) for 350 DEG C, other operate and
Embodiment 1 is identical.
Checking test
From reclaimed sand made from the method that Fig. 2 is recycling cast waste sand of the present invention.To the energy consumption in production technology of the present invention,
Regeneration rate, the quality etc. of reclaimed sand carry out statistic record, and compared with the prior art, acquired results (its as shown in table 1
In, Publication No. CN105328115A (renovation process of cast waste sand hot plasma), openly has been respectively adopted in the prior art
Number for CN106807882A (inorganic precoated sand antiquated sand regeneration helps liquid and antiquated sand renovation process with decomposition), Publication No.
Method in the patent of CN106975726A (recycling cast waste sand method) a kind of, parameters obtained are the average in each method).
The method difference with the prior art of the present invention of table 1
As seen from the above table, the present invention has high processing antiquated sand ability, regeneration efficiency height, reproduction quality is good, regeneration energy consumption is low
The features such as.Simultaneously as it is special to recycle inorganic precoated sand and organic resin sand antiquated sand or single inorganic precoated sand etc. at the same time
Point, can alleviate the environmental protection pressure of foundry enterprise, mitigate the roughing sand buying pressure of foundry enterprise, while be brought for foundry enterprise
Good economic benefit.
Although the foregoing describing the embodiment of the present invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
On the premise of from the principle of the present invention and essence, various changes or modifications can be made to these embodiments, but these are changed
Protection scope of the present invention is each fallen within modification.
Claims (8)
- A kind of 1. method of recycling cast waste sand, it is characterised in that：It the described method comprises the following steps：(1) cast waste sand crushes； (2) roast；(3) wet method stirs；(4) mill；(5) selection by winnowing, magnetic separation；The cast waste sand is inorganic precoated sand and/or organic tree Fat sand sand core.
- 2. the method for recycling cast waste sand according to claim 1, it is characterised in that：After the method step (5) also Carry out step (6) screening, pack.
- 3. the method for recycling cast waste sand according to claim 1, it is characterised in that：The step (1) is according to the following steps Carry out：Cast waste sand is broken into fine sand；The fine sand being broken into can pass through 3mm × 3mm sieve apertures.
- 4. the method for recycling cast waste sand according to claim 3, it is characterised in that：The step (2) is according to the following steps Carry out：Fine sand of the step (1) after broken is roasted at 340~360 DEG C, removes the inert coating on inorganic precoated sand surface, Ran Hou 650 DEG C roast the organic matter completely burned in antiquated sand totally.
- 5. the method for recycling cast waste sand according to claim 4, it is characterised in that：The step (3) is according to the following steps Carry out：Fine sand after step (2) is roasted, which is moved into the stirring pool of the hydrochloric acid solution equipped with 0.28 mol/L, to be stirred, and passes through sand water Separator separates fine sand and waste liquid, and waste liquid is crossed to harmless emission after handling, and the clear water recycled in waste liquid returns to stirring pool.
- 6. the method for recycling cast waste sand according to claim 5, it is characterised in that：The step (4) is according to the following steps Carry out：The inert coating on fine sand surface after wet method stirring is removed by mechanical disruption.
- 7. the method for recycling cast waste sand according to claim 6, it is characterised in that：The step (5) is according to the following steps Carry out：Fine sand after milling is removed the fine powder in reclaimed sand by selection by winnowing, is removed the magnetisable material in reclaimed sand by magnetic separation Remove.
- 8. the method for recycling cast waste sand according to claim 7, it is characterised in that：The step (6) is according to the following steps Carry out：It will be sieved by the fine sand after step (5) processing by different fineness, pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711215811.3A CN107983907A (en) | 2017-11-28 | 2017-11-28 | The method of recycling cast waste sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711215811.3A CN107983907A (en) | 2017-11-28 | 2017-11-28 | The method of recycling cast waste sand |
Publications (1)
| Publication Number | Publication Date |
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| CN107983907A true CN107983907A (en) | 2018-05-04 |
Family
ID=62033716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711215811.3A Pending CN107983907A (en) | 2017-11-28 | 2017-11-28 | The method of recycling cast waste sand |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326231A (en) * | 2018-06-04 | 2018-07-27 | 合肥仁创铸造材料有限公司 | Reduce the antiquated sand regeneration method of reclaimed sand acid consumption value |
| CN108580798A (en) * | 2018-06-11 | 2018-09-28 | 重庆长江造型材料（集团）股份有限公司 | A kind of recoverying and utilizing method of the inorganic overlay film hygrometric state antiquated sand of silicates |
| CN108723286A (en) * | 2018-06-11 | 2018-11-02 | 重庆长江造型材料（集团）股份有限公司 | A kind of regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates |
| CN108817312A (en) * | 2018-06-11 | 2018-11-16 | 重庆长江造型材料（集团）股份有限公司 | A kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates |
| CN108941448A (en) * | 2018-08-14 | 2018-12-07 | 南阳仁创砂业科技有限公司 | Haydite regenerating used method, regeneration ceramsite sand and products thereof |
| CN109158528A (en) * | 2018-09-30 | 2019-01-08 | 合肥仁创铸造材料有限公司 | A kind of regeneration method of inorganic old sand |
| CN109396328A (en) * | 2018-12-17 | 2019-03-01 | 合肥仁创铸造材料有限公司 | A kind of combining and regenerating technique and the inorganic reclaimed sand of inorganic old sand thermal method and wet process |
| CN109822041A (en) * | 2019-03-27 | 2019-05-31 | 烟台通鼎舟汽车零部件有限公司 | A kind of inorganic antiquated sand regeneration method |
| CN110252943A (en) * | 2019-06-12 | 2019-09-20 | 南通凯斯辛普森机械科技有限公司 | Antiquated sand thermal reclamation equipment and antiquated sand thermal reclamation technique |
| CN110814276A (en) * | 2019-12-06 | 2020-02-21 | 马鞍山市绿科环保科技有限公司 | Method for cleaning impurities in casting waste sand |
| CN111347007A (en) * | 2020-03-24 | 2020-06-30 | 盛亚红 | Method for manufacturing casting core by adopting precoated sand process |
| CN111496180A (en) * | 2020-06-17 | 2020-08-07 | 合肥仁创铸造材料有限公司 | Combined regeneration and reuse method for cast aluminum inorganic used sand |
| CN112846070A (en) * | 2020-12-28 | 2021-05-28 | 亚威机械制造(徐州)有限公司 | Precoated sand recycling and regenerating process and equipment |
| CN113134567A (en) * | 2021-04-20 | 2021-07-20 | 柳晶（长春）环保科技有限公司 | Regeneration method of mixed waste sand of inorganic waste sand and green mould waste sand and regenerated sand |
| CN114042860A (en) * | 2021-11-29 | 2022-02-15 | 金耐源(河南)工业科技有限公司 | Low-emission environment-friendly casting mold material recycling process |
| CN114101577A (en) * | 2021-11-24 | 2022-03-01 | 北京仁创砂业铸造材料有限公司 | Regeneration method of casting 3D printing waste sand |
| CN114367631A (en) * | 2021-12-23 | 2022-04-19 | 盐城仁创砂业科技有限公司 | Composite recycling process for solid-liquid waste |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4224438A1 (en) * | 1991-10-19 | 1993-04-22 | Hans Martin Koopmann | Apparatus for regeneration of foundry sand - with individual units coupled together according to sand type etc., for mechanical, thermal, chemical and wet regeneration processes |
| DE102007008104A1 (en) * | 2007-02-19 | 2008-08-21 | Daimler Ag | Process to regenerate sand pre-used in a metal casting process by burning and washing out organic and inorganic residues |
| 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 |
| CN105728641A (en) * | 2016-03-01 | 2016-07-06 | 潍柴动力股份有限公司 | Regeneration method of casting wet type mixed old sand |
| CN106807882A (en) * | 2017-02-06 | 2017-06-09 | 柳州市柳晶科技有限公司 | Inorganic precoated sand antiquated sand regeneration decomposition helps liquid and antiquated sand renovation process |
-
2017
- 2017-11-28 CN CN201711215811.3A patent/CN107983907A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4224438A1 (en) * | 1991-10-19 | 1993-04-22 | Hans Martin Koopmann | Apparatus for regeneration of foundry sand - with individual units coupled together according to sand type etc., for mechanical, thermal, chemical and wet regeneration processes |
| DE102007008104A1 (en) * | 2007-02-19 | 2008-08-21 | Daimler Ag | Process to regenerate sand pre-used in a metal casting process by burning and washing out organic and inorganic residues |
| 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 |
| CN105728641A (en) * | 2016-03-01 | 2016-07-06 | 潍柴动力股份有限公司 | Regeneration method of casting wet type mixed old sand |
| CN106807882A (en) * | 2017-02-06 | 2017-06-09 | 柳州市柳晶科技有限公司 | Inorganic precoated sand antiquated sand regeneration decomposition helps liquid and antiquated sand renovation process |
Non-Patent Citations (1)
| Title |
|---|
| 樊自田等: "《水玻璃砂工艺原理及应用技术》", 31 March 2016, 机械工业出版社 * |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326231A (en) * | 2018-06-04 | 2018-07-27 | 合肥仁创铸造材料有限公司 | Reduce the antiquated sand regeneration method of reclaimed sand acid consumption value |
| CN108580798A (en) * | 2018-06-11 | 2018-09-28 | 重庆长江造型材料（集团）股份有限公司 | A kind of recoverying and utilizing method of the inorganic overlay film hygrometric state antiquated sand of silicates |
| CN108723286A (en) * | 2018-06-11 | 2018-11-02 | 重庆长江造型材料（集团）股份有限公司 | A kind of regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates |
| CN108817312A (en) * | 2018-06-11 | 2018-11-16 | 重庆长江造型材料（集团）股份有限公司 | A kind of mechanical regeneration method of the inorganic overlay film hygrometric state antiquated sand of silicates |
| CN108941448A (en) * | 2018-08-14 | 2018-12-07 | 南阳仁创砂业科技有限公司 | Haydite regenerating used method, regeneration ceramsite sand and products thereof |
| CN109158528A (en) * | 2018-09-30 | 2019-01-08 | 合肥仁创铸造材料有限公司 | A kind of regeneration method of inorganic old sand |
| CN109396328A (en) * | 2018-12-17 | 2019-03-01 | 合肥仁创铸造材料有限公司 | A kind of combining and regenerating technique and the inorganic reclaimed sand of inorganic old sand thermal method and wet process |
| CN109822041A (en) * | 2019-03-27 | 2019-05-31 | 烟台通鼎舟汽车零部件有限公司 | A kind of inorganic antiquated sand regeneration method |
| CN110252943A (en) * | 2019-06-12 | 2019-09-20 | 南通凯斯辛普森机械科技有限公司 | Antiquated sand thermal reclamation equipment and antiquated sand thermal reclamation technique |
| CN110814276A (en) * | 2019-12-06 | 2020-02-21 | 马鞍山市绿科环保科技有限公司 | Method for cleaning impurities in casting waste sand |
| CN111347007A (en) * | 2020-03-24 | 2020-06-30 | 盛亚红 | Method for manufacturing casting core by adopting precoated sand process |
| CN111496180A (en) * | 2020-06-17 | 2020-08-07 | 合肥仁创铸造材料有限公司 | Combined regeneration and reuse method for cast aluminum inorganic used sand |
| CN111496180B (en) * | 2020-06-17 | 2021-08-10 | 合肥仁创铸造材料有限公司 | Combined regeneration and reuse method for cast aluminum inorganic used sand |
| CN112846070A (en) * | 2020-12-28 | 2021-05-28 | 亚威机械制造(徐州)有限公司 | Precoated sand recycling and regenerating process and equipment |
| CN112846070B (en) * | 2020-12-28 | 2022-09-23 | 亚威科技(文昌)有限公司 | Precoated sand recycling and regenerating process and equipment |
| CN113134567A (en) * | 2021-04-20 | 2021-07-20 | 柳晶（长春）环保科技有限公司 | Regeneration method of mixed waste sand of inorganic waste sand and green mould waste sand and regenerated sand |
| CN114101577A (en) * | 2021-11-24 | 2022-03-01 | 北京仁创砂业铸造材料有限公司 | Regeneration method of casting 3D printing waste sand |
| CN114101577B (en) * | 2021-11-24 | 2023-12-29 | 北京仁创砂业铸造材料有限公司 | Regeneration method of casting 3D printing waste sand |
| CN114042860A (en) * | 2021-11-29 | 2022-02-15 | 金耐源(河南)工业科技有限公司 | Low-emission environment-friendly casting mold material recycling process |
| CN114042860B (en) * | 2021-11-29 | 2024-02-09 | 金耐源(河南)工业科技有限公司 | Low-emission environment-friendly casting mold material recycling process |
| CN114367631A (en) * | 2021-12-23 | 2022-04-19 | 盐城仁创砂业科技有限公司 | Composite recycling process for solid-liquid waste |
| CN114367631B (en) * | 2021-12-23 | 2023-04-28 | 盐城仁创砂业科技有限公司 | Composite recycling process for solid-liquid waste |
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