CN104843770B - A kind of method that tin mud resource is utilized - Google Patents
A kind of method that tin mud resource is utilized Download PDFInfo
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- CN104843770B CN104843770B CN201510144521.9A CN201510144521A CN104843770B CN 104843770 B CN104843770 B CN 104843770B CN 201510144521 A CN201510144521 A CN 201510144521A CN 104843770 B CN104843770 B CN 104843770B
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Abstract
A kind of method utilized there is provided tin mud resource, methods described include the pretreatment of tin mud, drying no longer change to weight, make tin mud powdered, be calcined at 500 DEG C~1000 DEG C, product of roasting is post-processed, product is finally given, product includes nano-stannic oxide.Recycling treatment is carried out for tin mud using the present invention, resulting nano-stannic oxide product granularity is controllable, and added value is higher, has broad application prospects.In addition, step of the present invention is simple, it is easy to implement, investment operating cost is relatively low, it is easy to popularization and application.
Description
Technical field
The present invention relates to a kind of method that tin mud resource is utilized.
Background technology
In electroplating process or tin ore exploitation etc. during can produce stanniferous solid waste, herein referred to as " tin mud ",
With continuing to develop for industry, produced tin mud is more and more.By taking electrotinning production process as an example, the effective ingredient of tin plating electrolyte
Sn2+It is easy to by the Fe of the oxygen in air, steel plate dissolution3+Etc. oxidizing for Sn4+。Sn4+It can not be utilized, and easily shape
Into SnO2、Sn(OH)4Deng precipitation or with plating solution organic matter formation complex compound, these materials with it is other in a small amount of plating solution
The sediments such as metal impurities form tin mud together.In actual production process, the loss amount of tin element is about 10%.With annual production
It is about 100 tons per annual tin element loss amount exemplified by 200000 tons of insoluble anode electrotinning lines, the wet tin mud of generation
Weight be about 800 tons.If these tin mud resources not utilized, the very big wasting of resources can be caused.
Recycling treatment mainly is carried out to tin mud using following two methods at present.
First method is to add reducing agent with by tin element Restore All contained in tin mud after tin mud is dissolved in acid
For simple substance tin, melting then is carried out to it again, metallic tin is finally obtained.Although this method can obtain metallic tin, it is due to
Impurity content is higher in the metallic tin finally obtained, therefore can not be directly used in if electrotinning etc. is to purity requirement higher
In industrial production.In addition, higher using the equipment investment expense and operating cost of this method.
Another method is to carry out hydrogen reduction by the body refuse block oxidizing roasting of tin mud, then with annealing furnace, obtain metallic tin or
Stannous oxide.Very high using the equipment investment expense and operating cost of this method, general manufacturer does not possess this energy yet
Power, therefore cause the application of this method also less.
In addition, in addition in electrotinning, can also produce tin mud during other plating or tin ore exploitation etc., these tin
Theil indices in mud are more slightly lower than the Theil indices in electrotinning lines, if but it is not recycled, it will also cause very big
The wasting of resources.
Therefore, the method that a kind of feasible and easy to implement tin mud resource is utilized is needed badly.
The content of the invention
It is an object of the invention to provide a kind of method that tin mud resource is utilized.
Another object of the present invention is to provide a kind of method of the higher nano-stannic oxide of the clay standby purity of utilization tin.
It is described according to one embodiment of present invention there is provided a kind of method of the clay standby nano-stannic oxide of utilization tin
Method comprises the following steps：Tin mud is dried, until the weight of tin mud no longer changes, dry tin mud is obtained；Make tin mud powdered, with
Obtain tin mud powder；High-temperature roasting, obtains product of roasting, and product of roasting includes nano-stannic oxide.
According to an aspect of the present invention, after being calcined to tin mud powder, methods described can also include following step
Suddenly：Add acid to wash product of roasting, and rinsed using distilled water to neutrality, drying after separation of solid and liquid.
According to an aspect of the present invention, methods described, which is additionally may included in, to be located in advance to tin mud before the drying of tin mud
The step of reason, pretreatment, includes：Distilled water is added into tin mud and is stirred, then while stirring, peroxidating is added
Hydrogen solution, continues to stir, untill no longer heat release, so that the first mixed solution is obtained, wherein, based on the weight of tin mud, press
10mL/gTin mud~20mL/gTin mudAmount add distilled water, by 0.7mL/gTin mud~1mL/gTin mudAmount it is molten to add hydrogen peroxide
Liquid；Separation of solid and liquid is carried out to the first mixed solution, rinsed with organic matter washing precipitate miscible with water, then with distilled water.
According to an aspect of the present invention, the step of drying tin mud can be performed by being dried at 50 DEG C~100 DEG C.
According to an aspect of the present invention, tin mud powdered can be made while being dried to tin mud.
According to an aspect of the present invention, the step of making dry tin mud powdered can be performed by grinding.
According to an aspect of the present invention, the step of high-temperature roasting can be included tin mud powder at 500 DEG C~1000 DEG C
It is calcined.
According to the present invention it is possible to obtain but be not limited to following beneficial effect：
(1) present invention carries out recycling treatment for tin mud, and resulting nano-stannic oxide product granularity is controllable, adds
Value is higher, has broad application prospects.
(2) step of the present invention is simple, it is easy to implement, and investment operating cost is relatively low, it is easy to popularization and application.
Brief description of the drawings
By the detailed description carried out below in conjunction with the accompanying drawings, above and other objects of the present invention, feature and advantage will
Become more fully apparent, wherein：
Fig. 1 is the flow chart of the clay standby nano-stannic oxide of utilization tin according to one exemplary embodiment of the present invention；
Fig. 2 is the flow chart of the clay standby nano-stannic oxide of utilization tin in accordance with an alternative illustrative embodiment of the present invention；
Fig. 3 is the flow chart of the clay standby nano-stannic oxide of utilization tin in accordance with an alternative illustrative embodiment of the present invention；
Fig. 4 is the clay standby nano-stannic oxide product of utilization tin according to one exemplary embodiment of the present invention
XRD spectrum；
Fig. 5 is the clay standby nano-stannic oxide product of utilization tin according to one exemplary embodiment of the present invention
SEM schemes；
Fig. 6 is the clay standby nano-stannic oxide product of utilization tin in accordance with an alternative illustrative embodiment of the present invention
XRD spectrum；
Fig. 7 is the clay standby nano-stannic oxide product of utilization tin in accordance with an alternative illustrative embodiment of the present invention
SEM schemes.
Embodiment
Hereinafter, the exemplary embodiment of the present invention is more fully described with reference to the accompanying drawings.However, they can be with not
Same form is implemented, and should not be interpreted as limited to embodiments set forth here.On the contrary, thesing embodiments are provided so that the disclosure
It will be thoroughly and complete, and the scope of example embodiment will be fully conveyed to those skilled in the art.
It can be the tin mud produced in electrotinning production process according to the tin mud of the exemplary embodiment of the present invention, also may be used
To be the tin mud that produces during other plating or tin ore exploitation etc..But it is exemplary according to the present invention the invention is not restricted to this
The tin mud of embodiment can be other any suitable tin mud containing tin.
Hereinafter, in order to clearly be described, root is described into as example for the tin mud produced in electrotinning production process
According to the method for the clay standby nano-stannic oxide of the utilization tin of the present invention.
Fig. 1 is the flow chart of the clay standby nano-stannic oxide of utilization tin according to one exemplary embodiment of the present invention.
Fig. 2 is the flow chart of the clay standby nano-stannic oxide of utilization tin in accordance with an alternative illustrative embodiment of the present invention.Fig. 3 is basis
The flow chart of the clay standby nano-stannic oxide of utilization tin of the another exemplary embodiment of the present invention.Hereinafter with reference to Fig. 1 to Fig. 3
Describe the method utilized according to the tin mud resource of the exemplary embodiment of the present invention in detail.
Reference picture 1, the tin mud drum produced in electrotinning production process includes SnO, SnO2、Sn(OH)2、Sn(OH)4、Sn4+With
The complex compound and other metal precipitates of organic matter formation, but the invention is not restricted to this, other contain is also possible that in Xi Nizhong
There are Sn compound or Sn2+With the complex compound of organic matter formation.
According to the exemplary embodiment of the present invention, other metal precipitates can be included in during electrotinning from steel plate
The Fe of dissolution3+The Fe (OH) of formation3, but the invention is not restricted to this, such as Cu (OH) can also be included2、Mg(OH)2、Zn(OH)2
Etc. other metal precipitates.
According to the exemplary embodiment of the present invention, wet tin mud is dried first, dry tin mud is obtained.In the teachings of the present invention
Under, those skilled in the art can dry wet tin mud from suitable equipment, drying temperature and drying time, until wet tin mud
Weight no longer change untill.Specific drying temperature and the water content of drying time and wet tin mud are closely related, can be with office
The drying of any appropriate time is performed at what appropriate temperature, untill the weight of tin mud no longer changes.According to the present invention's
Wet tin mud, can be placed in drying 1h~5h at 50 DEG C~100 DEG C and obtain dry tin mud by exemplary embodiment.For example, can will be wet
Tin mud dries 5h at 50 DEG C and obtains dry tin mud, wet tin mud can be dried into 4.5h at 60 DEG C and obtain dry tin mud, can will be wet
Tin mud dries 4h at 70 DEG C and obtains dry tin mud, and wet tin mud can be dried at 80 DEG C to 3h and obtain dry tin mud, or can be by
Wet tin mud dries 1~2h at 90 DEG C~100 DEG C and obtains dry tin mud.When drying temperature is higher than 100 DEG C, the energy on the one hand can be caused
Waste, on the other hand may result in some of tin mud composition and occur change chemically；When drying temperature is less than 50 DEG C
When, drying time can be caused long, reduce drying efficiency.
Next, making tin mud powdered, to obtain tin mud powder.
Tin mud powdered can be made by grinding dry tin mud, suitable Ginding process can be used to grind dry tin mud
Mill, for example, centrifugation polishing, revolution polishing or vibro-grinding method, as long as tin mud powdered can be made.According to the present invention
Exemplary embodiment, the granularity of tin mud powder is less than or equal to 50 μm, but the invention is not restricted to this, can be according to final
The requirement of the granularity of product or follow-up roasting equipment used, the degree of grinding to dry tin mud are suitably regulated.For example, working as
Follow-up roasting apparatus heating is slower, when sintering temperature is relatively low, and the granularity after dry tin mud grinding can be suitably larger than 50 μm.
According to the exemplary embodiment of the present invention, tin mud powdered can also be made while being dried to tin mud.Example
Such as, when being dried using drying modes such as pneumatic conveying dryings to tin mud, tin mud powdered can be made simultaneously.
Next, tin mud powder is calcined at 500 DEG C~1000 DEG C, so as to obtain product of roasting.According to this hair
Bright exemplary embodiment, roasting time can specifically be determined according to used equipment, without being carried out in addition to it
Restriction.According to one embodiment of present invention, tin mud powder can be calcined 2h at 700 DEG C and obtains product of roasting.According to
Another embodiment of the present invention, can be calcined 1h at 800 DEG C by tin mud powder and obtain product of roasting.In the teachings of the present invention
Under, those skilled in the art can be calcined from suitable device to tin mud powder.
As described above, tin mud drum includes SnO, SnO2、Sn(OH)2、Sn(OH)4、Sn4+With the complex compound of organic matter formation and its
Its metal precipitates.In roasting process, following physically or chemically change can occur for the various materials in tin mud：SnO is in roasting
It can be oxidized by oxygen as tin ash during burning；For Sn (OH)2, Sn (OH)2Generation Sn (OH) can be first oxidized4, then
Sn(OH)4Decompose reaction generation SnO again2, or, Sn (OH)2Can first be decomposed reaction generation SnO, and then SnO is again
It is oxidized generation SnO2；Organic complex can decompose in the process or physics volatilization is so as to be removed；Other metals sink
The shallow lake reaction that can decompose obtains metal oxide and stayed in product of roasting, such as the Fe (OH) in metal precipitates3, point
Solution generates iron oxide and stayed in product of roasting, the Cu (OH) in metal precipitates2, decompose generation cupric oxide and stay in roasting production
In thing.Wherein, Sn (OH)4Decomposition reaction it is as shown in Equation 1.
(formula 1)
According to the exemplary embodiment of the present invention, when sintering temperature is less than 500 DEG C, reaction temperature is insufficient to allow Sn
(OH)4Reaction generation tin ash, or it is insufficient to allow Sn (OH)4Total overall reaction generates tin ash, in addition it is also possible to making portion
Divide organic matter or complex compound to be not reaching to decomposition temperature, lead to not organic matter or complex compound removing；When sintering temperature is higher than
At 1000 DEG C, the waste of the energy can be caused, and can increase the granularity of tin ash.According to the exemplary implementation of the present invention
Example, upon firing between be less than 1h when, Sn (OH) can be caused4Reaction it is insufficient；When being more than 3h between upon firing, the energy can be caused
Waste.However, the invention is not restricted to this, roasting time is also relevant with roasting apparatus, when the roasting apparatus used can be realized
It is uniformly heated tin mud or when heat transfer efficiency is higher, roasting time also can suitably shorten.
The reaction that various materials occur in tin mud as described above, product of roasting includes tin ash.According to this
The exemplary embodiment of invention, the granularity of tin ash can be 5nm~100nm, for example, can be 21nm.But the present invention is not
It is limited to this, the granularity of tin ash can change according to the granularity and sintering temperature of tin mud powder, therefore tin ash
Granularity can reasonably be controlled according to the granularity and sintering temperature of tin mud powder.
According to the exemplary embodiment of the present invention, in product of roasting in addition to including tin ash, it is also possible to including not
Decompose complete Fe (OH)3With Cu (OH)2And Fe2O3With the metal oxide such as CuO.Therefore, tin ash in product of roasting
Purity can be relevant with the impurity in tin mud.
Reference picture 2, according to the exemplary embodiment of the present invention, can also be produced after being calcined to tin mud powder to roasting
Acid is added in thing to be washed to product of roasting, so as to remove the Fe that may be present being mixed in product of roasting in tin mud
(OH)3And Fe2O3And Cu (OH)2With the metal impurities such as CuO., may during addition acid is washed to product of roasting
The reaction of generating polynomial 2, so as to remove Fe (OH)3Impurity, other metal impurities can also pass through acid removing.According to showing for the present invention
The acid of example property embodiment can be the acid of hydrochloric acid and sulfuric acid etc., so as to ionize out H+, remove Fe (OH)3Or Cu(OH)2
Etc. containing OH-Metal impurities and such as Fe2O3And CuO metal impurities.
3H++Fe(OH)3==Fe3++3H2O (formula 2)
It is then possible to be rinsed the product of roasting added after acid to neutrality using distilled water, dry, obtain after separation of solid and liquid
Tin ash.Separation of solid and liquid can be carried out using the method such as centrifuged, but the invention is not restricted to this.
Therefore, the metal impurities in the tin ash obtained according to the embodiment can be removed.
Reference picture 3, according to the exemplary embodiment of the present invention, can also in advance be located before tin mud is dried to tin mud
Reason.It is possible, firstly, to add the distilled water that 10mL/g~20mL/g is calculated as by the weight of tin mud into tin mud, stir, and
While stirring, the hydrogenperoxide steam generator that 0.7mL/g~1mL/g is calculated as by the weight of tin mud is added, continues to stir, until no longer
Untill heat release, the first mixed solution is obtained.According to the present invention exemplary embodiment, add distilled water into tin mud, be in order to
Tin mud is set fully to disperse, so that be conducive to the abundant reaction of material in tin mud, can also when moisture is higher in tin mud
Optionally omit this step.Added into tin mud after hydrogenperoxide steam generator, generating polynomial 3 is understood in tin mud to the reaction of formula 5.
H2O2+ SnO==SnO2+H2O (formula 3)
H2O2+Sn(OH)2==Sn (OH)4(formula 4)
H2O2+Sn2+==SnO2↓+2H2O (formula 5)
Reaction is exothermic reaction above, therefore can be with by whether whether heat release is carried out completely to judge to react.According to
The exemplary embodiment of the present invention, the concentration of hydrogen peroxide can be 10%~35%, but the invention is not restricted to this, as long as peroxide
The oxidisability for changing hydrogen can be by Sn2+It is oxidized to Sn4+, the concentration of hydrogen peroxide can be suitable value.According to the example of the present invention
Property embodiment, the addition of hydrogen peroxide can be 10mL/g~20mL/g, but the invention is not restricted to this, the addition of hydrogen peroxide
Amount can be according to Sn in the concentration and tin mud of hydrogen peroxide2+Content and be adjusted.
In addition, during hydrogen peroxide is added, can also get rid of partial organic substances.
After reaction completely, separation of solid and liquid is carried out to the first mixed solution, such as centrifuge any appropriate can be used
Solid-liquid separating method to the first mixed solution carry out separation of solid and liquid., can be with when carrying out separation of solid and liquid to the first mixed solution
Solid-liquid point is carried out to the first mixed solution using any appropriate solid-liquid separating methods such as centrifugations well known in the art
From.According to the exemplary embodiment of the present invention, the sediment after separation of solid and liquid can be washed with ethanol, solvable to remove
In the organic complex of ethanol.But the invention is not restricted to this, can also use it is other can molten organic matter be made a return journey altogether with distilled water
Except the organic impurities contained in sediment.
Next, with organic matter washing precipitate miscible with water, it is preferable that ethanol washing precipitate can be used.Then
Rinsed with distilled water, the number of times rinsed using distilled water is not particularly limited, untill by sediment rinsed clean.Then,
Each step of the method for preparing nano-stannic oxide shown in Fig. 1 can be performed using the tin mud of the pretreatment more than
Suddenly, each step of the method for preparing nano-stannic oxide or in execution Fig. 2 shown, will not be described here.
, can be according to the impurity component in tin mud and impurity content and desired according to the exemplary embodiment of the present invention
The application scenario of nano-stannic oxide, correspondingly selects the exemplary embodiment shown respectively in Fig. 1, Fig. 2 and Fig. 3 to prepare
Nano-stannic oxide.
According to the exemplary embodiment of the present invention, when the content of other metal impurities is smaller (such as small in addition to tin in tin mud
, can be by the example that is shown in Fig. 1 in 3%), and during requirement relatively low (such as larger than 95%) to nano-stannic oxide purity
Property embodiment prepare nano-stannic oxide, gained nano-stannic oxide can be used as polishing agent, glass polish, colouring agent, common
Ceramic glaze etc.；If preparing nano-stannic oxide using the method for Fig. 2 exemplary embodiment, nano-stannic oxide
Purity can reach more than 98%, and the nano-stannic oxide with the purity can be used for high-end ceramic glaze etc. to purity requirement
Of a relatively high occasion；If preparing nano-stannic oxide, nanometer titanium dioxide using the method for Fig. 3 exemplary embodiment
The purity of tin can reach more than 99%, and the nano-stannic oxide with the purity can be widely used in semiconductor, the sun
In energy battery, gas sensor and optical technology, application prospect is boundless.
The method utilized according to the tin mud resource of the present invention is more fully described below in conjunction with specific example.
Example 1
The wet tin mud 10g filtered out on electrotinning lines is taken, its moisture content is 26%.
First, wet tin mud 3h is dried at 80 DEG C, tin percentage by weight in dry tin mud, dry tin mud is obtained after drying is
62.8%.
Then, dry tin mud is ground to less than 50 μm, obtains tin mud powder.
Next, by tin mud powder at 600 DEG C high-temperature roasting 3h, obtain product of roasting, product of roasting includes nanometer
Tin ash product, the purity of nano-stannic oxide is 95.6%, and grain size is 6nm~7nm.
Fig. 4 shows the clay standby nano-stannic oxide product of utilization tin of the exemplary embodiment according to the present invention
XRD spectrum.Fig. 5 shows the clay standby nano-stannic oxide product of utilization tin of the exemplary embodiment according to the present invention
SEM schemes.
Example 2
The wet tin mud 10g filtered out on electrotinning lines is taken, its moisture content is 21%, wherein, the tin that tin is accounted for after drying
The 61% of cement content.
First, wet tin mud 5h is dried at 60 DEG C, the content that tin in dry tin mud, dry tin mud is obtained after drying is 61%.
Dry tin mud is ground to less than 50 μm, tin mud powder is obtained.
By tin mud powder at 800 DEG C high-temperature roasting 1h, obtain product of roasting, product of roasting includes nano-stannic oxide
Product.
After natural cooling, percent by volume is used for 1:1 hydrochloric acid is washed to product of roasting, and utilizes distilled water drift
It is washed till after neutrality and centrifuges, product of roasting is then dried into 5h at 60 DEG C.
After natural cooling, nano-stannic oxide product is obtained, the grain size of nano-stannic oxide is 24nm, and product purity is
98.3%.
Example 3
The wet tin mud 10g filtered out on electrotinning lines is taken, its moisture content is 21%, wherein, the tin that tin is accounted for after drying
The 57.8% of cement content.
Wet tin mud is put into beaker, the distilled water that 100mL is added into beaker is sufficiently stirred for, disperses tin mud.
The hydrogenperoxide steam generator that 7mL concentration is 30% is added while stirring, continues to stir, until no longer heat release is
Only, the first mixed solution is obtained.
First mixed solution is centrifuged, supernatant is outwelled, sediment is first washed once with ethanol, then using steaming
Distilled water is rinsed five times.
Sediment 3h is dried at 100 DEG C, until the weight of sediment no longer changes, dry tin mud is obtained.
Dry tin mud is ground to less than 50 μm, to obtain tin mud powder.
Tin mud powder is subjected to high-temperature roasting 2h at 1000 DEG C, product of roasting is obtained, product of roasting includes nano-silica
Change tin product.
After natural cooling, product of roasting is washed using the concentrated sulfuric acid, then centrifugation is rinsed to neutrality using distilled water
Separation, then dries 5h by product of roasting at 60 DEG C.
After natural cooling, it is 99% to obtain nano-stannic oxide product purity, and grain size is 47nm.
Fig. 6 shows the clay standby nano-stannic oxide product of utilization tin of the exemplary embodiment according to the present invention
XRD spectrum.Fig. 7 shows the clay standby nano-stannic oxide product of utilization tin of the exemplary embodiment according to the present invention
SEM schemes.
According to the exemplary embodiment of the present invention, nano-stannic oxide is prepared using tin mud, not only tin mud is carried out
Recycling treatment, and because tin ash has broad application prospects and the method for exemplary embodiment of the present is had extensively
Wealthy application prospect.In addition, the granularity of the nano-stannic oxide prepared according to the exemplary embodiment of the present invention can be according to grinding
Parameter when mill and roasting is reasonably controlled.
At present, generally metallic tin is made using discarded tin mud, and cost is higher.In this application, by using discarded
Tin mud prepares nano-stannic oxide, can effectively utilize tin mud, thus prevent tin mud can not recycling and cause money
Source is wasted.
Furthermore it is possible to the applied field of the impurity component and impurity content and desired nano-stannic oxide in tin mud
Close, accordingly select to prepare nano-stannic oxide according to the method for the exemplary embodiment of the present invention.In addition, according to the present invention
Exemplary embodiment method the step of it is simple, it is easy to implement, investment operating cost it is relatively low, it is easy to popularization and application.
Although having show and described some embodiments of the present invention, it will be understood by those skilled in the art that not taking off
, can be to these embodiments in the case of from the principle of the invention and spirit that its scope is limited by claim and its equivalent
Modify.
Claims (6)
1. a kind of method that tin mud resource is utilized, it is characterised in that the described method comprises the following steps：
Tin mud is dried, until the weight of tin mud no longer changes, dry tin mud is obtained；
Make dry tin mud powdered, to obtain tin mud powder, the granularity of the tin mud powder is less than or equal to 50 μm；
High-temperature roasting is carried out to tin mud powder at 500 DEG C~1000 DEG C, obtain tin in product of roasting, product of roasting it is main with
The form of nano-stannic oxide is present.
2. according to the method described in claim 1, it is characterised in that after high-temperature roasting is carried out to tin mud powder, the side
Method is further comprising the steps of：
Add acid to wash product of roasting, and rinsed using distilled water to neutrality, drying after separation of solid and liquid.
3. according to the method described in claim 1, it is characterised in that methods described is additionally included in tin mud is dried before to tin mud
Pre-processed, included the step of pretreatment：
Distilled water is added into tin mud and is stirred, then while stirring, hydrogenperoxide steam generator is added, continues to stir,
Untill no longer heat release, so that the first mixed solution is obtained, wherein, based on the weight of tin mud, by 10mL/gTin mud~20mL/
gTin mudAmount add distilled water, by 0.7mL/gTin mud~1mL/gTin mudAmount add hydrogenperoxide steam generator；
Separation of solid and liquid is carried out to the first mixed solution, rinsed with organic matter washing precipitate miscible with water, then with distilled water.
4. the method according to claim 1 or 3, it is characterised in that performed by being dried at 50 DEG C~100 DEG C by tin
The step of mud is dried.
5. according to the method described in claim 1, it is characterised in that make tin mud powdered while being dried to tin mud.
6. according to the method described in claim 1, it is characterised in that the step of making dry tin mud powdered is performed by grinding.
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| CN116102054A (en) * | 2023-01-08 | 2023-05-12 | 首钢京唐钢铁联合有限责任公司 | Method for extracting tin oxide from electrotinning mud and application thereof |
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|---|---|---|---|---|
| KR101169927B1 (en) * | 2012-02-21 | 2012-08-06 | (주)에이원엔지니어링 | Method for withdraing tin by dry refining from tin sludge |
| CN104032131B (en) * | 2013-06-27 | 2017-01-25 | 中石化上海工程有限公司 | Method for processing high-tin anode slurry |
| CN104163451B (en) * | 2014-07-14 | 2017-01-11 | 赣州瑞德化工有限公司 | Method for producing nano tin-base material |
| CN104131177B (en) * | 2014-07-31 | 2015-10-21 | 河北钢铁股份有限公司 | A kind of method reclaiming zinc-plated refined tin from eleetrotinplate mud |
-
2015
- 2015-03-30 CN CN201510144521.9A patent/CN104843770B/en not_active Expired - Fee Related
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