CN1263875C - Method for recovering tin from tin plating, dipping and welding and apparatus thereof - Google Patents
Method for recovering tin from tin plating, dipping and welding and apparatus thereof Download PDFInfo
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- CN1263875C CN1263875C CNB011054131A CN01105413A CN1263875C CN 1263875 C CN1263875 C CN 1263875C CN B011054131 A CNB011054131 A CN B011054131A CN 01105413 A CN01105413 A CN 01105413A CN 1263875 C CN1263875 C CN 1263875C
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Abstract
The present invention relates to a method for recovering tin from metallic scraps of tinning, wicking and soldering. The present invention is characterized in that the method comprises the procedures that 1, liquid is heated to high temperature which is higher than a tin melting point (232 DEG C); 2, the tin attaching metallic scraps are put in the high temperature liquid and are soaked for more than 10 min; 3, the tin molten by the high temperature liquid is separated from the metallic scraps by a high temperature liquid spray technique and a centrifugal separating technique; 4, the tin is deposited, discharged and cooled, and then the tin products are obtained. The present invention has the advantages of simple device, easy control, no environmental pollution and good economic benefit.
Description
Technical field
The present invention is relevant with tin, particularly a kind of method and device thereof that reclaims tin from the metallic scrap of zinc-plated, wicking and scolding tin.
Background technology
Tin is rich in ductility because its fusing point only is 232 degree Celsius, and solidity to corrosion is good, therefore often go up zinc-plated, tinfoil, tin-tube, welding etc. for iron plate and be extensive use of, tin is a kind of very important strategic material, especially concerning non-product tinnily, reclaim tin and more seem very important.
The method that at present relevant tin reclaims is as follows:
1. pickling method
To soak with the metallic scrap of tin and be dissolved in the hydrochloric acid, and tin will be dissolved in generate SnCl in the hydrochloric acid
2(tin protochloride) solution adds aluminium again in solution or zinc is replaced, and produces spongy chemical tin and aluminum chloride or zinc chloride.
Wherein this aluminum chloride or zinc chloride promptly become the waste water that easily causes public hazards, and related industries cost of investment and problems such as the treatment facility of waste water and personnel then are that the quite thorny bundle of industry is disturbed the fact.
And the spongy chemical tin that is produced after the above-mentioned displacement, must reheat to handle and remove moisture content and make tin, the smog gas that is evaporated in this heat-treatment process will cause atmospheric pollution again.
So technology and process that above-mentioned useless tin refines are not only loaded down with trivial details, and extremely bother, there is not the economic benefit of recovery.
2. electrolytic process
This method is through the electrolytic tank electrolysis processing treatment with recovery metallic scrap, tin appended on the metallic scrap is decomposed, form on the negative electrode of spongiform chemical tin attached to electrolyzer, the chemical tin of nonmetal tin is taken out, and heating evaporation removal moisture content, heat fused is made tin slab.
Employed electrolytic solution is hydrochloric acid or caustic soda in this kind treatment process, also easily cause public hazards, and the electrochemical equivalent of processing treatment is through about 2.214 grams of actual tests/1 ampere hour, that is electrolysis go out the tin of 2.214 grams must power consumption ampere hours, so the electrochemical machining treating processes is than power consumption, consuming time.
In addition, electrochemical machining equipment price costliness, and also because electrolytic solution has corrodibility, the structure deteriorate rate is fast.
All this all recovery economic benefits of the relevant tin of metallic scrap that causes are unclear, and more difficult attraction industry is invested the recovery of these tin.
Summary of the invention
The objective of the invention is to propose method and device thereof that a kind of metallic scrap from zinc-plated, wicking and scolding tin reclaims tin, this method and device have the structure letter, control easy characteristics, make the recovery of tin also have the better economic interests for this reason.
The object of the present invention is achieved like this: a kind ofly reclaim the method for tin from the metallic scrap of zinc-plated, wicking or scolding tin, it is characterized in that the step of this method has:
(1) with liquid heat to high-temp liquid with the fusing point that is higher than tin;
(2) metallic scrap that will be attached with tin places said high-temp liquid to soak more than 10 minutes;
(3) spray towards metallic scrap being separated with metallic scrap by the tin that high-temp liquid melts by high-temp liquid with centrifugal separation technique;
(4) tin precipitation, discharging, cooling back obtain tin.
Said liquid is kerosene;
The temperature that said high-temp liquid soaks or the spray gold-attempt belongs in the waste material process should keep perseverance to be higher than the fusing point (232 ℃) of tin;
Implement the device of the method for above-mentioned recovery tin, it is characterized in that this device is by storage tank, whizzer, well heater, pump, transfer lime and recovery tube constitute, the bottom of said storage tank is funnel shaped, its end is provided with bleed valve, well heater can be to the liquid heat in the storage tank, liquid in the storage tank can be pumped to the concentrator bowl that is in the elevated whizzer by pump by transfer lime, said whizzer is by container, engine and concentrator bowl are formed, said container external parcel lagging material, container bottom is provided with outlet, and enter storage tank by the top of storage tank by valve and recovery tube, pass the bottom center of container the rotating shaft sealing of concentrator bowl and link to each other with engine by transmission rig;
Said engine is an electric motor;
Said well heater is an electric heater.
Description of drawings
The invention will be further described below in conjunction with embodiment and accompanying drawing thereof.
Fig. 1 is the schematic representation of apparatus that the tin method is reclaimed in enforcement of the present invention.
Among the figure:
1-storage tank 11-periscope hole
12-bleed valve 2-transfer lime
21-pump 3-whizzer
31-container 32-engine
33-recovery tube 34-concentrator bowl
35-outlet 36-valve
37-rotating shaft 38-transmission rig
The 4-well heater
Embodiment
See also shown in Figure 1, the present invention is from zinc-plated, the metallic scrap of wicking and scolding tin reclaims the method and the device thereof of tin, be the storage tank 1 and the well heater 4 (as: electricradiator) of utilization one carrying liquid (hot coal oil), with about liquid heat 280 degree extremely Celsius, can make recovery tin non-sclerous in storage tank 1, the high-temp liquid of storage tank 1 (hot coal oil) is then pumped to whizzer 3 through transfer lime 2 with pump 21, make the metallic scrap in the concentrator bowl 34 of inserting whizzer 3 in advance soaked by high-temp liquid (hot coal oil) 10 to 15 minutes, because of the outside of the container 31 of whizzer 3 is a lagging material, so the temperature perseverance that can effectively continue the maintenance high-temp liquid is higher than the fusing point of tin (232 degree Celsius), makes attached to the tin on the metal and melts.
After immersion treatment, pass through transmission rig 38 by engine 32, rotating shaft 37 drives concentrator bowl 34 rotations of whizzer 3, and cooperate transfer lime 2 continuous spray feed high-temp liquids and the Xi Chong of metallic scrap surface melting is removed, and throw away concentrator bowl 34 in the lump with high-temp liquid, enter in the container 31, open valve 36, tin is by outlet 35, valve 36 is led back the high-temp liquid storage tank 1 from recovery tube 33, because the proportion 7.3 of tin is greater than the proportion 0.85 of liquid (hot coal oil), so sweep away being deposited in the storage tank 1 of tin nature of recovery, through the set periscope hole 11 in storage tank 1 appropriate location inspect and the breakdown of bottom drain valve 12 is controlled, give off tin after the recovery by the bottom, can make tin slab or other tinwork.
After for some time is handled in centrifugation, stop the input of high-temp liquid and the rotation of whizzer 3, after metallic scrap after splendid attire handled is sling from concentrator bowl 34 and is poured over the predetermined position, in concentrator bowl 34, insert the metallic scrap of another batch desire recovery tin again, handling procedures such as immersion, the spray that repeats above-mentioned high-temp liquid medium dashed, centrifugation, precipitation recovery can be in regular turn by the tin in the recovery metallic scrap of criticizing.
The situation of experiment is as follows:
When storage tank 1 Heating temperature is 270 ℃～290 ℃, temperature is 240 ℃～260 ℃ in the container 31, metallic scrap soaks more than 10 minutes, the high-temp liquid spray is 300～500 meters/minute towards speed, flow be the 400-500 liter/minute, the rotating speed of concentrator bowl 34 is 900～1000 rev/mins, can handle a collection of metallic scrap in about 30 minutes, each about 300～500 liters of the metallic scrap of processing.This shows that method and apparatus of the present invention is practicable.
In sum, the recovery method of tin of the present invention has following advantages as can be known:
1. equipment is simplified, and cost of investment is low, and the recovery economic benefit of tin is higher.
2. simple to operation, tin reclaims rapidly.
3. can effectively reclaim tin, prevent the waste of tin in the scrap metal.
4. processing is processed institute and must the time be saved more than ten times than electrolysis.
5. in the process, the generation of the public hazards such as no waste water, waste gas.
Claims (5)
1. one kind is reclaimed the method for tin from the metallic scrap of zinc-plated, wicking and scolding tin, it is characterized in that the step of this method has:
(1) kerosene is heated to high-temp liquid with 232 ℃ of fusing points that are higher than tin;
(2) metallic scrap that will be attached with tin places said high temperature kerosene to soak more than 10 minutes;
(3) spray towards metallic scrap being separated with metallic scrap by the tin that high temperature kerosene melts by high-temp liquid with centrifugal separation technique;
(4) tin precipitation, discharging, cooling back obtain tin.
2. the method for recovery tin according to claim 1 is characterized in that said high-temp liquid soaks or the spray gold-attempt belongs to temperature in the waste material process and should keep perseverance to be higher than 232 ℃ of the fusing points of tin.
3. implement the device of the method for claim 1 or 2 described recovery tin, it is characterized in that this device is by storage tank (1), whizzer (3), well heater (4), pump (21), transfer lime (2) and recovery tube (33) constitute, the bottom of said storage tank (1) is funnel shaped, its end is provided with bleed valve (12), well heater (4) can be to the liquid heat in the storage tank (1), liquid in the storage tank (1) can be pumped to the concentrator bowl that is in elevated whizzer (3) (34) by pump (21) by transfer lime (2), said whizzer (3) is by container (31), engine (32) and concentrator bowl (34) are formed, said container (31) external parcel lagging material, container (31) bottom is provided with outlet (35), and entering storage tank (1) by the top of storage tank (1) by valve (36) and recovery tube (33), the rotating shaft (37) of concentrator bowl (34) is passed the bottom center of container (31) hermetically and is linked to each other with engine (32) by transmission rig (38).
4. the device of recovery tin according to claim 3 is characterized in that said engine (32) is an electric motor.
5. the device of recovery tin according to claim 3 is characterized in that said well heater (4) is an electric heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011054131A CN1263875C (en) | 2001-02-23 | 2001-02-23 | Method for recovering tin from tin plating, dipping and welding and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011054131A CN1263875C (en) | 2001-02-23 | 2001-02-23 | Method for recovering tin from tin plating, dipping and welding and apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1372014A CN1372014A (en) | 2002-10-02 |
| CN1263875C true CN1263875C (en) | 2006-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011054131A Expired - Fee Related CN1263875C (en) | 2001-02-23 | 2001-02-23 | Method for recovering tin from tin plating, dipping and welding and apparatus thereof |
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| Country | Link |
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| CN (1) | CN1263875C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100467634C (en) * | 2007-06-13 | 2009-03-11 | 汤盛文 | Method for recovering tin from tin-plating wastes and special heating turnace thereof |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086490B (en) * | 2009-12-08 | 2012-09-05 | 亚旭电子科技(江苏)有限公司 | Method for separating tin slag |
| CN101937742B (en) * | 2010-09-10 | 2012-05-09 | 北京科技大学 | Method and device for separating and recovering metallic copper and tin in tinplating copper |
| CN102002594B (en) * | 2010-12-17 | 2012-09-19 | 赖小洪 | Method for recycling tin |
| CN102676824B (en) * | 2011-11-15 | 2014-06-18 | 王应龙 | Electronic pin copper-tin-iron separation device and electronic pin copper-tin-iron separation method |
| US20140217157A1 (en) * | 2013-02-07 | 2014-08-07 | Greene Lyon Group, Inc. | Removal of electronic chips and other components from printed wire boards using liquid heat media |
| CN105567971B (en) * | 2014-10-06 | 2018-04-13 | 上海奇谋能源技术开发有限公司 | The technique that Physical separates copper and scolding tin mixture |
| CN104328286A (en) * | 2014-11-12 | 2015-02-04 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | Method for extracting pure tin from tinning waste slag |
| RU2600156C2 (en) * | 2014-11-12 | 2016-10-20 | Денис Александрович Втулкин | Method of extracting tin-lead solders from scrap electronic printed circuit boards and device therefor |
| CN106702159B (en) * | 2015-07-29 | 2018-11-27 | 上海奇谋能源技术开发有限公司 | A kind of method separating copper and scolding tin mixture and the device for realizing this method |
| CN106683800B (en) * | 2017-01-04 | 2018-09-07 | 重庆龙健金属制造有限公司 | A kind of recycling processing method of useless tin-coated copper rice |
| CN108746645B (en) * | 2017-01-04 | 2021-05-25 | 浙江虎哥环境有限公司 | Resource recovery method |
| CN106898438B (en) * | 2017-01-04 | 2019-03-12 | 滑县恒琢信息科技有限公司 | A kind of recovery method as resource of useless tinned wire |
| CN107716514B (en) * | 2017-10-30 | 2024-03-08 | 仁新设备制造（四川）有限公司 | De-tin equipment for circuit board components |
| WO2024144673A1 (en) * | 2022-12-27 | 2024-07-04 | Toscelik Profil Ve Sac Endustrisi Anonim Sirketi | A method for recovering metallic tin from tin containing wastes formed in the tin plating process |
| CN118086675A (en) * | 2023-12-29 | 2024-05-28 | 耒阳市焱鑫有色金属有限公司 | Method for separating copper and tin from copper-tin heavy sand |
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2001
- 2001-02-23 CN CNB011054131A patent/CN1263875C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100467634C (en) * | 2007-06-13 | 2009-03-11 | 汤盛文 | Method for recovering tin from tin-plating wastes and special heating turnace thereof |
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| Publication number | Publication date |
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| CN1372014A (en) | 2002-10-02 |
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