CN103317084B - A kind of method using antiquated sand recycling equipment to manufacture precoated sand - Google Patents
A kind of method using antiquated sand recycling equipment to manufacture precoated sand Download PDFInfo
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- CN103317084B CN103317084B CN201310273058.9A CN201310273058A CN103317084B CN 103317084 B CN103317084 B CN 103317084B CN 201310273058 A CN201310273058 A CN 201310273058A CN 103317084 B CN103317084 B CN 103317084B
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- sand
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- elevator
- old
- recycling equipment
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- 239000004576 sand Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims abstract description 11
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229960004011 methenamine Drugs 0.000 claims abstract description 11
- 239000006148 magnetic separator Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000010304 firing Methods 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 6
- 239000008116 calcium stearate Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000005011 phenolic resin Substances 0.000 claims abstract description 6
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 6
- 229910000077 silane Inorganic materials 0.000 claims abstract description 6
- 238000009472 formulation Methods 0.000 claims abstract description 4
- 239000008187 granular material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 abstract description 9
- 238000011069 regeneration method Methods 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
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- Processing Of Solid Wastes (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to a kind of using method of antiquated sand recycling equipment, comprise following step: a, antiquated sand add vibrating crushing screening machine and be broken into granule, enter old sand elevator and be delivered to magnetic separator, removing iron charge; Antiquated sand after b, preheating enters hot-method regeneration device and fires; Sand after c, high-temperature firing enters vibratory sieve after cooling bed cooling, then obtains reclaimed sand after fresh sand elevator; D, prepare material according to the following formulation: methenamine solution 1.6 ~ 1.7kg, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg; E, above-mentioned material is sequentially added into stirred tank stirs, obtain precoated sand.The invention has the beneficial effects as follows: simple to operate, old sand recovery utilization rate is high, is easy to promote.
Description
Technical field
The present invention relates to a kind of method using antiquated sand recycling equipment to manufacture precoated sand.
Background technology
China is a big country in foundry, along with the high speed development of national economy, has reached 3,530 ten thousand tons, occupy the umber one of World Casting output to China's foundry goods annual production in 2009.China is again the consumption big country of a Modeling Material, because more than 80% foundry goods is from sand casting, because placer iron during China's moulding is larger, in general, often produce 1 ton of castings and can produce about 1.2 ~ 1.4 tons of antiquated sands, the cast waste sand of annual discharge can reach more than 3,000 ten thousand tons.So a large amount of discharge cast waste sands, will occupy a lot of antiquated sand place.Along with the extensive use of the various organic and inorganic binding agent of China, the harmful components contained in antiquated sand are caused to get more and more, such as, in the antiquated sand of organic resin binding agent residual aldehyde, phenol, benzene, potassium, isocyanide, sulfide etc., the composition that alkali, phenol etc. residual in inorganic binder antiquated sand are harmful.Antiquated sand containing this kind of harmful components, through rain erosion after discharge, its harmful components will pollute rivers and lakes, even pollute life water source.Especially the composition such as isocyanide, phenols contained in the strong basicity of water-glass sand and resin sand, the public hazards caused are even more serious.In recent years, along with the continuous enhancing of people's environmental consciousness, the increasing of Environmental protection law enforcement dynamics, the increase of charges for disposing pollutants, all forces Foundry Works to carry out regeneration to old sand.
Summary of the invention
The technical problem to be solved in the present invention is: based on the problems referred to above, the invention provides a kind of using method of antiquated sand recycling equipment.
The present invention solves the technical scheme that its technical problem adopts: a kind of antiquated sand recycling equipment, comprises the vibrating crushing screening machine, old sand elevator, magnetic separator, hot-method regeneration device, cooling bed, vibratory sieve and the fresh sand elevator that are connected successively.
Further, bucket, screw(-type) feeder in the middle of old sand is provided with between magnetic separator, hot-method regeneration device successively.
Further, hot-method regeneration device comprises sand preheater, air preheater and roaster, and sand preheater, air preheater are connected with roaster respectively, and sand preheater is connected with screw(-type) feeder, roaster is connected with cooling bed, and roaster is also connected with gas generator.
The using method of antiquated sand recycling equipment, comprises following step:
A, antiquated sand add vibrating crushing screening machine and are broken into granule, enter old sand elevator and are delivered to magnetic separator, removing iron charge, and bucket, screw(-type) feeder in the middle of old sand, deliver to sand preheater by the antiquated sand removing iron charge;
In b, air preheater, the air of preheating enters roaster, and the antiquated sand after preheating enters roaster high-temperature firing, and furnace temperature is 600 ~ 800 DEG C;
Sand after c, high-temperature firing enters vibratory sieve after cooling bed cooling, then obtains reclaimed sand after fresh sand elevator;
D, according to the following formulation, prepares material:
Methenamine solution (methenamine: water=1:3) 1.6 ~ 1.7kg, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg;
E, heating stirred tank to 100 ~ 200 DEG C, be sequentially added into above-mentioned material in stirred tank and stir, obtain precoated sand.
The invention has the beneficial effects as follows: simple to operate, old sand recovery utilization rate is high, is easy to promote.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is structural representation of the present invention.
Wherein: 1. vibrating crushing screening machine, 2. old sand elevator, 3. magnetic separator, 4. bucket in the middle of old sand, 5. screw(-type) feeder, 6. hot-method regeneration device, 7. cooling bed, 8. vibratory sieve, 9. fresh sand elevator.
Detailed description of the invention
The invention will be further described in conjunction with specific embodiments now, and following examples are intended to the present invention instead of limitation of the invention further are described.
A kind of antiquated sand recycling equipment as shown in Figure 1, comprises the vibrating crushing screening machine 1, old sand elevator 2, magnetic separator 3, hot-method regeneration device 6, cooling bed 7, vibratory sieve 8 and the fresh sand elevator 9 that are connected successively.
Bucket 4, screw(-type) feeder 5 in the middle of old sand is provided with successively between magnetic separator 3, hot-method regeneration device 6.
Hot-method regeneration device 6 comprises sand preheater, air preheater and roaster, and sand preheater, air preheater are connected with roaster respectively, and sand preheater is connected with screw(-type) feeder 5, and roaster is connected with cooling bed 7, and roaster is also connected with gas generator.
The using method of antiquated sand recycling equipment, comprises following step:
A, antiquated sand add vibrating crushing screening machine 1 and are broken into granule, enter old sand elevator 2 and are delivered to magnetic separator 3, removing iron charge, and bucket 4, screw(-type) feeder 5 in the middle of old sand, deliver to sand preheater by the antiquated sand removing iron charge;
In b, air preheater, the air of preheating enters roaster, and the antiquated sand after preheating enters roaster high-temperature firing, and furnace temperature is 600 ~ 800 DEG C;
Sand after c, high-temperature firing enters vibratory sieve 8 after cooling bed 7 coolings, then obtains reclaimed sand after fresh sand elevator 9;
D, according to the following formulation, prepares material:
Methenamine solution (methenamine: water=1:3) 1.6 ~ 1.7kg, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg;
E, heating stirred tank to 100 ~ 200 DEG C, be sequentially added into above-mentioned material in stirred tank and stir, obtain precoated sand.
Embodiment 1:
Methenamine solution (methenamine: water=1:3) 1.6kg, phenolic resins 2.7kg, calcium stearate 100g, silane 60g, all the other are reclaimed sand, and total amount is 150kg.
The rate of recovery of the antiquated sand obtained according to above-mentioned using method is 85%.
Embodiment 2:
Methenamine solution (methenamine: water=1:3) 1.7kg, phenolic resins 2.8kg, calcium stearate 300g, silane 100g, all the other are reclaimed sand, and total amount is 150kg.
The rate of recovery of the antiquated sand obtained according to above-mentioned using method is 90%.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to right.
Claims (1)
1. use antiquated sand recycling equipment to manufacture a method for precoated sand, comprise following step:
A, antiquated sand add vibrating crushing screening machine and are broken into granule, enter old sand elevator and are delivered to magnetic separator, removing iron charge, and bucket, screw(-type) feeder in the middle of old sand, deliver to sand preheater by the antiquated sand removing iron charge;
In b, air preheater, the air of preheating enters roaster, and the antiquated sand after preheating enters roaster high-temperature firing, and furnace temperature is 600 ~ 800 DEG C;
Sand after c, high-temperature firing enters vibratory sieve after cooling bed cooling, then obtains reclaimed sand after fresh sand elevator;
D, according to the following formulation, prepares material:
Methenamine solution 1.6 ~ 1.7kg, wherein, methenamine: water=1:3, phenolic resins 2.7 ~ 2.8kg, calcium stearate 100 ~ 300g, silane 60 ~ 100g, all the other are reclaimed sand, and total amount is 150kg;
E, heating stirred tank to 100 ~ 200 DEG C, be sequentially added into above-mentioned material in stirred tank and stir, obtain precoated sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310273058.9A CN103317084B (en) | 2013-06-28 | 2013-06-28 | A kind of method using antiquated sand recycling equipment to manufacture precoated sand |
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| CN201310273058.9A CN103317084B (en) | 2013-06-28 | 2013-06-28 | A kind of method using antiquated sand recycling equipment to manufacture precoated sand |
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| CN103317084A CN103317084A (en) | 2013-09-25 |
| CN103317084B true CN103317084B (en) | 2015-08-26 |
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| CN104190854A (en) * | 2014-08-19 | 2014-12-10 | 重庆市大足区和润机械配件有限公司 | Regenerated pre-coated sand and preparation method thereof |
| CN104162630B (en) * | 2014-09-05 | 2017-03-15 | 甘肃永靖昌盛铸钢有限责任公司 | A kind of recycling method of casting discarded molding sand |
| CN104289667B (en) * | 2014-09-15 | 2016-11-23 | 浙江盛豪铸造有限公司 | Molding sand cooling reclamation set |
| CN104493074A (en) * | 2014-12-05 | 2015-04-08 | 牡丹江金缘钩缓制造有限责任公司 | Method for preparing zircon-sand pre-coated sand |
| CN104525852A (en) * | 2014-12-11 | 2015-04-22 | 青岛山上峰铸钢有限公司 | Method for recycling mould sand blank |
| CN104858362B (en) * | 2015-04-30 | 2019-05-24 | 北京仁创科技集团有限公司 | A kind of regeneration technology of cast used sand |
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| CN110935842A (en) * | 2019-10-18 | 2020-03-31 | 贵阳白云合金熔铸厂 | Precoated sand hot rubbing regeneration method and system |
| CN110756727A (en) * | 2019-11-15 | 2020-02-07 | 贵阳白云合金熔铸厂 | Tectorial membrane molding sand regeneration process and system |
| CN112719209A (en) * | 2020-12-24 | 2021-04-30 | 安徽永恒泰环保科技有限公司 | Processing method for recycling resin sand |
| CN113145792A (en) * | 2021-04-29 | 2021-07-23 | 厦门金鑫晶造型材料有限公司 | Preparation process applied to environment-friendly precoated sand of hollow camshaft |
| CN114130948A (en) * | 2021-12-02 | 2022-03-04 | 南通美莱达科技有限公司 | Recycling method of ceramsite waste sand |
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Effective date of registration: 20200420 Address after: 453700 yard of cotton processing plant, Langgongmiao Town, Xinxiang City, Henan Province Patentee after: Jinfeng (Xinxiang) silica sand Co., Ltd Address before: North Park Hill Road 214500 Jingjiang city in Jiangsu province Taizhou City No. 18 Patentee before: JINGJIANG WEIYI INTELLECTUAL PROPERTY SERVICE Co.,Ltd. |