CN101979686A - Tin resource recycling method for tin oxide-containing waste - Google Patents
Tin resource recycling method for tin oxide-containing waste Download PDFInfo
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- CN101979686A CN101979686A CN2010105058227A CN201010505822A CN101979686A CN 101979686 A CN101979686 A CN 101979686A CN 2010105058227 A CN2010105058227 A CN 2010105058227A CN 201010505822 A CN201010505822 A CN 201010505822A CN 101979686 A CN101979686 A CN 101979686A
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- stannic oxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a tin resource recycling method for tin oxide-containing waste. Raw materials to be treated by the method are mainly grinding waste materials and defective electrode products in the process of producing tin oxide electrodes, and the waste materials always contain higher-grade tin, and are subjected to crushing pretreatment, mixing with a carbon reducer, vacuum thermal reduction, and tin ingot casting so as to recycle the tin resource from the tin oxide-containing waste. The method effectively treats the tin oxide-containing waste continuously produced in the process of producing the tin oxide electrodes, fully recycles the secondary tin resource to realize regeneration and recycling of the tin resource, and has the characteristics of simple and feasible process, short flow, low investment, high efficiency, no pollution and the like.
Description
Technical field
The present invention relates to a kind of secondary tin resource recoverying and utilizing method that contains the stannic oxide industrial solid castoff, belong to the non-ferrous metal secondary resource and reclaim field and vacuum metallurgy field.
Background technology
Tindioxide (SnO2) electrode is widely used in the melting and the aluminum electrolysis industry of high-grade opticglass, is particularly useful for flint class glass, barium flint, barium crown, and the melting of dense crown etc., and glass is not produced pollution.In the stannic oxide electrode production process, want output to contain the very high waste material of tindioxide inevitably; comprise grinding material, electrode defect ware etc.; these waste materials are carried out recycling effectively; to economize on resources, protect the society and the ecological benefits of aspects such as environment simultaneously in addition for titanium dioxide electrode production unit brings certain economic benefits.
General recovery method for this class waste material mainly comprises: reverberatory smelting method, electric furnace reduction smelting process, wet chemistry method etc., throughput and bigger equipment input that these methods or requirement are bigger, in process of production because of using the nitrose chemical to have higher environmental risk and potential safety hazard, for stannic oxide electrode manufacturer, it is all not too suitable to use these class methods to carry out the recycling of stanniferous waste material.
Summary of the invention
The objective of the invention is to contain the tindioxide waste material for output in the recycling electrode production, solve general stanniferous method for treatment of waste material and do not fit into the problem that electrode production producer adopts, provide a kind of stanniferous waste resource recovery that is adapted to the clean and effective of electrode production producer use to utilize method.
A kind of tin resource recoverying and utilizing method that contains the stannic oxide waste provided by the invention comprises the steps:
(1) industrial solid castoff that contains stannic oxide is pulverized pre-treatment;
(2) carbonaceous reductant that present method is selected to use carries out pulverization process;
(3) carbonaceous reductant that contains gained in stannic oxide waste and the step (2) with gained in the step (1) mixes in proportion;
(4) mixture that contains stannic oxide waste and carbonaceous reductant of gained in the step (3) is packed into heat-resisting reactor;
(5) the heat-resisting reactor after will feeding is sent into the vacuum reducing stove and is implemented the material vacuum thermal reduction, and the reduction process temperature is controlled at 1150 ℃, finishes up to reduction, naturally cools to 300 ℃;
(6) tin slab is taken out and be cast into to vacuum reducing gained metal tin liquor in the step (5).
Pulverization process equipment is hammer mill in the above-mentioned steps (1), and the industrial solid castoff that contains stannic oxide is handled granularity less than 200 orders.
Carbonaceous reductant in the above-mentioned steps (2) is the high-quality charcoal, and pulverization process equipment is hammer mill, and the charcoal granularity is less than 2mm.
Carbonaceous reductant is to contain 20% of stannic oxide waste material weight in the above-mentioned steps (3).
Heat-resisting reactor in the above-mentioned steps (4) uses the graphite clay crucible.
Vacuum reducing stove in the above-mentioned steps (5) adopts the metallic heating body heating, pumping equipment is selected rotary-vane vaccum pump for use, the reduction process temperature is controlled to be 1150 ℃, recovery time is according to the feeding quantity adjustment, vacuum tightness is with the reduction reaction process generation respective change of material, and the carbon dioxide packing class reactant gases of generation is through extracting emptying out by vacuum pump after the filter treatment.
Require furnace temperature to naturally cool to 300 ℃ before taking out the metal tin liquor in the above-mentioned steps (6), take out the metal tin liquor again and in swage, pour into the metal tin slab behind the taking-up crucible surface scum silica frost earlier.
Beneficial effect of the present invention:
Stanniferous waste resource recovery provided by the invention utilizes method to be specially adapted to electrode production producer and selects for use, has significant advantage with respect to general tin waste material recovery method: flow process is short, and is pollution-free, invests little.The metallic tin quality height that obtains in the resource utilization process, can further produce superfine tin dioxide powder for electrode production is personal, also can sell at a premium prices to relevant unit, produce favorable economic benefit, realize the waste material zero release in the stannic oxide electrode production process simultaneously, have higher environment and social benefit.
Description of drawings
Fig. 1 is that the tin resource of stanniferous industrial solid castoff of the present invention utilizes the method process flow diagram.
Embodiment
Embodiment 1
1. take by weighing 1.2 kilograms of spent cathodes powder fragmentations that contain stannic oxide, use hammer mill, granularity 200 orders.
2. take by weighing 240 gram wood charcoal powders, pulverization process equipment is hammer mill, charcoal granularity 2mm.
3. the spent cathodes powder and the wood charcoal powder that will contain stannic oxide mix.
4. compound is packed in the graphite clay crucible, the plumbago crucible after will feeding then moves in the vacuum oven, covers the vacuum bell.
5. heat up and vacuumize, be warming up to 1150 ℃ through three and a half hours.
6. constant temperature, constant temperature time two hours, vacuum tightness is a process that slowly descends in the thermostatic process.
7. cooling stops heating, stops vacuum pump again after allowing temperature drop to 900 ℃ naturally, drops to 300 ℃ until temperature.
8. taking-up tin liquor is slowly filled air and is destroyed vacuum to normal pressure, opens bell, takes out plumbago crucible, draws together scum silica frost, pours the metal tin liquor into metal mold, and the metal tin slab is taken out in the cooling back, weighs to obtain 550 gram metallic tins.
Embodiment 2
1. take by weighing 1.2 kilograms and contain the fragmentation of tindioxide abrasive dust waste material, use hammer mill, granularity 200 orders.
2. take by weighing 240 gram wood charcoal powders, pulverization process equipment is hammer mill, charcoal granularity 2mm.
3. will contain tindioxide abrasive dust waste material and wood charcoal powder mixes.
4. compound is packed in the graphite clay crucible, the plumbago crucible after will feeding then moves in the vacuum oven, covers the vacuum bell.
5. heat up and vacuumize, be warming up to 1150 ℃ through three and a half hours.
6. constant temperature, constant temperature time two hours, vacuum tightness is a process that slowly descends in the thermostatic process.
7. cooling stops heating, stops vacuum pump again after allowing temperature drop to 900 ℃ naturally, drops to 300 ℃ until temperature.
8. taking-up tin liquor is slowly filled air and is destroyed vacuum to normal pressure, opens bell, takes out plumbago crucible, draws together scum silica frost, pours the metal tin liquor into metal mold, and the metal tin slab is taken out in the cooling back, weighs to obtain 520 gram metallic tins.
Claims (7)
1. tin resource recoverying and utilizing method that contains the stannic oxide waste, its special card comprises the steps:
(1) industrial solid castoff that contains stannic oxide is pulverized pre-treatment;
(2) carbonaceous reductant that present method is selected to use carries out pulverization process;
(3) carbonaceous reductant that contains gained in stannic oxide waste and the step (2) with gained in the step (1) mixes in proportion;
(4) mixture that contains stannic oxide waste and carbonaceous reductant of gained in the step (3) is packed into heat-resisting reactor;
(5) the heat-resisting reactor after will feeding is sent into the vacuum reducing stove and is implemented the material vacuum thermal reduction, and the reduction process temperature is controlled at 1150 ℃, finishes up to reduction, naturally cools to 300 ℃;
(6) tin slab is taken out and be cast into to vacuum reducing gained metal tin liquor in the step (5).
2. method according to claim 1 is characterized in that: pulverization process equipment is hammer mill in the above-mentioned steps (1), and the industrial solid castoff that contains stannic oxide is handled granularity less than 200 orders.
3. method according to claim 1 is characterized in that: the carbonaceous reductant in the above-mentioned steps (2) is the high-quality charcoal, and pulverization process equipment is hammer mill, and the charcoal granularity is less than 2mm.
4. method according to claim 1 is characterized in that: carbonaceous reductant is to contain 20% of stannic oxide waste material weight in the above-mentioned steps (3).
5. method according to claim 1 is characterized in that: the heat-resisting reactor in the above-mentioned steps (4) uses the graphite clay crucible.
6. method according to claim 1, it is characterized in that: the vacuum reducing stove in the above-mentioned steps (5) adopts the metallic heating body heating, vacuum apparatus uses rotary-vane vaccum pump, the reduction process temperature is controlled to be 1150 ℃, and the carbon dioxide packing class reactant gases of generation is through extracting emptying out by vacuum pump after the filter treatment.
7. method according to claim 1 is characterized in that: take out metal tin liquor forehearth temperature in the above-mentioned steps (6) and naturally cool to 300 ℃, take out the metal tin liquor again and pour into the metal tin slab in swage behind the taking-up crucible surface scum silica frost earlier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105058227A CN101979686A (en) | 2010-10-12 | 2010-10-12 | Tin resource recycling method for tin oxide-containing waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105058227A CN101979686A (en) | 2010-10-12 | 2010-10-12 | Tin resource recycling method for tin oxide-containing waste |
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| CN101979686A true CN101979686A (en) | 2011-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105058227A Pending CN101979686A (en) | 2010-10-12 | 2010-10-12 | Tin resource recycling method for tin oxide-containing waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255297A (en) * | 2013-05-22 | 2013-08-21 | 中南大学 | Treatment method of tin anode slurry |
| CN103643048A (en) * | 2013-11-27 | 2014-03-19 | 山东理工大学 | Comprehensive utilization method of zinc slag |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108534A (en) * | 1985-11-18 | 1986-09-03 | 鞍山市冶炼厂 | Extraction process of tin from copper-smelting sludge |
| CN101824540A (en) * | 2009-12-10 | 2010-09-08 | 佛山市邦普镍钴技术有限公司 | Method for separating and reclaiming metal nickel and tin from waste materials containing nickel and tin |
-
2010
- 2010-10-12 CN CN2010105058227A patent/CN101979686A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108534A (en) * | 1985-11-18 | 1986-09-03 | 鞍山市冶炼厂 | Extraction process of tin from copper-smelting sludge |
| CN101824540A (en) * | 2009-12-10 | 2010-09-08 | 佛山市邦普镍钴技术有限公司 | Method for separating and reclaiming metal nickel and tin from waste materials containing nickel and tin |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255297A (en) * | 2013-05-22 | 2013-08-21 | 中南大学 | Treatment method of tin anode slurry |
| CN103643048A (en) * | 2013-11-27 | 2014-03-19 | 山东理工大学 | Comprehensive utilization method of zinc slag |
| CN103643048B (en) * | 2013-11-27 | 2015-10-07 | 山东理工大学 | Comprehensive utilization method of zinc slag |
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Application publication date: 20110223 |