CN103114204A - Method for recovering tungsten-base alloy waste - Google Patents
Method for recovering tungsten-base alloy waste Download PDFInfo
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- CN103114204A CN103114204A CN201310057884XA CN201310057884A CN103114204A CN 103114204 A CN103114204 A CN 103114204A CN 201310057884X A CN201310057884X A CN 201310057884XA CN 201310057884 A CN201310057884 A CN 201310057884A CN 103114204 A CN103114204 A CN 103114204A
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- tungsten
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- bast alloy
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a method for recovering tungsten-base alloy waste, which comprises the following steps: (1) pretreating tungsten-base alloy waste; (2) carrying out oxidation reaction on the pretreated tungsten-base alloy waste in a recovery furnace; and (3) carrying out reduction reaction on the product subjected to oxidation reaction in the recovery furnace. According to the invention, the tungsten-base alloy waste is converted into high-quality tungsten alloy powder by oxidation-reduction reaction in the special equipment, and can be directly used for producing high-performance tungsten alloy, thereby effectively reutilizing resources and enhancing the utilization ratio of the resources.
Description
Technical field
The present invention relates to a kind of method that reclaims the tungsten-bast alloy waste material.
Background technology
Tungsten is Nonrenewable resources, makes its reserves sharply descend through for many years exploitation, therefore for the existing tungsten resource of protection, improves its utilization ratio, and it is particularly important that recycling tungsten seems.Usually, reclaiming tungsten-bast alloy has three kinds of liquid-bath absorption method, hydrometallurgical and oxidation reduction processes, and wherein, liquid-bath absorption method temperature is high, energy consumption large, complex process, cost recovery are high; Hydrometallurgical technique is very complex and easily environment is caused serious pollution also; Only have that oxidation reduction process technique is simple, economic and reliable.Tungsten-bast alloy waste material after recovery generally is used for steel to be looked forward to producing special steel material, and this is the simplest resource recycling, and utilization ratio is not high.
Summary of the invention
Goal of the invention: the purpose of this invention is to provide a kind of method that can improve the tungsten-bast alloy waste utilization rate, directly the tungsten-bast alloy waste material be changed into high-quality tungstenalloy powder.
Technical scheme: the method for recovery tungsten-bast alloy waste material of the present invention comprises the following steps:
A kind of method that reclaims the tungsten-bast alloy waste material is characterized in that, comprises the following steps:
(1) pre-treatment tungsten-bast alloy waste material;
(2) pretreated tungsten-bast alloy waste material carries out oxidizing reaction: be contained in pretreated tungsten-bast alloy waste material in waste tray and be placed on the feeding platform of recovery furnace; Auto stove-door is opened, and waste tray advances carrier pipe by puopulsion unit, and auto stove-door is closed, and controls temperature in stove, and the tungsten-bast alloy waste material is oxidized to oxide compound;
(3) product after oxidizing reaction carries out reduction reaction: first lead to rare gas element in stove, more logical reducing gas, control temperature in stove, make the oxide compound of tungsten-bast alloy waste material that reduction reaction occur in recovery furnace.
Wherein, described step (1) is generally that the tungsten-bast alloy waste material is cleaned and break process, can adopt 5-10%HCL and 5%NaOH to clean the tungsten-bast alloy waste material.Described step (2) oxidizing reaction temperature is 600-1100 ℃, and preferred oxidizing temperature is 700-900 ℃.After described step (2) reaction finishes, auto stove-door is opened, and discharging detects, and selects qualified product, and then qualified product is sent in stove according to the mode of step (2).Described step (3) reduction reaction temperature is 630-1200 ℃, and preferred reduction temperature is 700-1000 ℃.After described step (3) reaction finished, the product after reduction reaction added alloying element and makes the tungstenalloy powder.Described alloying element is iron or nickel.
Beneficial effect: the present invention compared with prior art, its advantage is that the tungsten-bast alloy waste material changes into high-quality tungstenalloy powder by redox reaction in specific equipment, can be directly used in to produce the High Performance W alloy, thereby realize that resource effectively recycles; This equipment adopts five band temperature controls simultaneously, semi-automatic mode charging, and adjusting air inflow quantity, carried out automatic control to the processing parameter that affects quality product automatically, guaranteed to produce the quality of product.
Description of drawings
Fig. 1 is the structural representation of specific equipment of the present invention;
Fig. 2 is the vertical view of specific equipment of the present invention.
Embodiment
As shown in the figure, specific equipment recovery furnace of the present invention comprises body of heater 1, body of heater 1 adopts lagging material to make, the four road waste tray guide rails that be arranged in parallel in body of heater 1, each twice up and down are provided with carrier pipe 2 in the outside, two ends of body of heater 1 corresponding to stove inner orbit position, at carrier pipe 2 external parcel water jackets 9, water jacket on discharge end carrier pipe 2 is in order to reduce the temperature of discharging, so that collection material detects, the water jacket on the feed end carrier pipe is the temperature of giving vent to anger in order to reduce.The mouth of pipe of carrier pipe 2 is provided with auto stove-door 3, and this auto stove-door 3 is controlled it by hydraulic efficiency plant and opened and closed, and sets gradually feeding platform 4 and the puopulsion unit 5 corresponding with carrier pipe 2 positions outside the auto stove-door 3 of feed end, and this puopulsion unit 5 is for promoting mainly oil cylinder.The waste tray of first manually the tungsten-bast alloy waste material being packed into also is placed on feeding platform 4, restart machine, promoting mainly oil cylinder pushes waste tray into transfer lime 2, be provided with in body of heater 1 and control sensor 16, be used for to control the waste material temperature of reaction, make waste material under 600 ~ 1100 ℃ of air atmospheres, the tungsten base high-specific-gravity alloy waste material is oxidized to oxide compound, at the outer discharging platform 6 that arranges of the auto stove-door 3 of discharge end, be used for artificially collecting the tungsten-bast alloy waste material through peroxidation, then detect.The carrier pipe 2 of discharge end is provided with inlet mouth 8, inlet mouth 8 connection traffic controllers 13 be used for to be controlled the air input of hydrogen, again are placed in feeding platform through the waste material of peroxidation, enter body of heater 1, the high-density alloy waste material can be reduced into the high-density alloy powder under 630 ~ 1200 ℃ of hydrogen atmospheres.Be provided with air outlet 7 on the carrier pipe 2 of feed end, and connect mist collection bucket 10 on the carrier pipe 2 of this end, and on this mist collection bucket 10, cooling channel 11 and explosionproof hole 12 are set, are connected with inlet mouth and all connect hydrogen pipeline in air outlet 7, the outer side of body of heater 1 is provided with gas recovery pipe 14, and loop equilibrium valve 15 is installed on this pipe, generally, equilibrium valve cuts out; Before opening fire door, first open equilibrium valve, when oven door opening, hydrogen directly passes through in gas recovery pipe, then returns to hydrogen pipeline, and does not pass through in body of heater, and when making oven door opening, the stove internal gas pressure reduces, thereby has guaranteed operator's safety.
Embodiment 1: at first, adopt 5%HCL and 5%NaOH to clean the tungsten-bast alloy waste material and with the waste disposal frustillatum; Secondly, the pallet that the tungsten-bast alloy waste material is housed is placed on the feeding platform 4 of recovery furnace; Open system, auto stove-door 3 is opened, and waste tray advances carrier pipe 2 by puopulsion unit 5, and auto stove-door 3 is closed, and controls 600 ℃ of the interior temperature of stove, and oxidizing reaction occurs in waste material in recovery furnace, the tungsten-bast alloy waste material is oxidized to oxide compound; After reaction finishes, auto stove-door 3 is opened, discharging; Then detect product, again be placed on feeding platform 4 detecting qualified product, by puopulsion unit 5, it is advanced carrier pipe 2, first pass into nitrogen in stove simultaneously, then pass into reducing gas hydrogen, reduction reaction occurs in waste material in recovery furnace, temperature is controlled at 630 ℃, and after reaction finishes, discharging detects; Product after reduction reaction adds the alloying elements such as iron, nickel and makes the tungstenalloy powder.
Embodiment 5 is basic identical with embodiment 1 step, and its difference is: oxidizing reaction temperature is 800 ℃, and reduction reaction temperature is 900 ℃.
Claims (10)
1. a method that reclaims the tungsten-bast alloy waste material, is characterized in that, comprises the following steps:
(1) pre-treatment tungsten-bast alloy waste material;
(2) oxidizing reaction: be contained in pretreated tungsten-bast alloy waste material in waste tray and be placed on the feeding platform (4) of recovery furnace; Auto stove-door (3) is opened, and waste tray advances carrier pipe (2) by puopulsion unit (5), and auto stove-door (3) is closed, and controls temperature in stove, and the tungsten-bast alloy waste material is oxidized to oxide compound;
(3) reduction reaction: first lead to rare gas element in stove, more logical reducing gas, control temperature in stove, make the oxide compound of tungsten-bast alloy waste material that reduction reaction occur in recovery furnace.
2. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 1, it is characterized in that: described step (1) is cleaned and break process the tungsten-bast alloy waste material.
3. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 2, is characterized in that: adopt 5-10%HCL and 5%NaOH to clean the tungsten-bast alloy waste material.
4. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 1, it is characterized in that: described step (2) oxidizing reaction temperature is 600-1100 ℃.
5. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 4, it is characterized in that: described oxidizing temperature is 700-900 ℃.
6. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 1, it is characterized in that: described step (3) reduction reaction temperature is 630-1200 ℃.
7. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 6, it is characterized in that: described reduction reaction temperature is 700-1000 ℃.
8. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 1, it is characterized in that: after described step (2) reaction finishes, auto stove-door (3) is opened, and discharging detects, select qualified product, and then qualified product is sent in stove according to the mode of step (2).
9. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 1 is characterized in that: after described step (3) reaction finished, the product after reduction reaction added alloying element and makes the tungstenalloy powder.
10. a kind of method that reclaims the tungsten-bast alloy waste material according to claim 9, it is characterized in that: described alloying element is iron or nickel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310057884.XA CN103114204B (en) | 2013-02-22 | 2013-02-22 | Method for recovering tungsten-base alloy waste |
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| CN201310057884.XA CN103114204B (en) | 2013-02-22 | 2013-02-22 | Method for recovering tungsten-base alloy waste |
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| CN103114204B CN103114204B (en) | 2015-05-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191920A (en) * | 2016-08-13 | 2016-12-07 | 福达合金材料股份有限公司 | A kind of method of silver tungsten waste recovery recycling |
| CN109226779A (en) * | 2018-10-09 | 2019-01-18 | 湖南工业大学 | A kind of method tungsten powder waste material removal of impurities and produce high purity tungsten |
| CN111500866A (en) * | 2020-05-07 | 2020-08-07 | 山东威尔斯通钨业有限公司 | Method for recycling tungsten alloy scraps |
| CN112974814A (en) * | 2021-04-25 | 2021-06-18 | 陕西斯瑞新材料股份有限公司 | Method for preparing regenerated copper-tungsten alloy powder |
| CN113477933A (en) * | 2021-07-02 | 2021-10-08 | 西安华力装备科技有限公司 | Process method for preparing fine tungsten alloy powder from waste residues |
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| CN202062084U (en) * | 2011-04-28 | 2011-12-07 | 宇辰新能源材料科技无锡有限公司 | Special hydrogen reduction furnace for preparing high-purity ultra-thin nickel (cobalt) powder |
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| CN1485450A (en) * | 2003-04-11 | 2004-03-31 | 自贡硬质合金有限责任公司 | Method for producing WC-Fe composite powder of ultra fine grain by tungsten alloy scrap |
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| CN202660886U (en) * | 2012-04-15 | 2013-01-09 | 徐文进 | Muffle furnace special for tungsten-molybdenum alloy |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191920A (en) * | 2016-08-13 | 2016-12-07 | 福达合金材料股份有限公司 | A kind of method of silver tungsten waste recovery recycling |
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| CN109226779B (en) * | 2018-10-09 | 2022-02-08 | 湖南工业大学 | Method for removing impurities from tungsten powder waste and producing high-purity tungsten powder |
| CN111500866A (en) * | 2020-05-07 | 2020-08-07 | 山东威尔斯通钨业有限公司 | Method for recycling tungsten alloy scraps |
| CN112974814A (en) * | 2021-04-25 | 2021-06-18 | 陕西斯瑞新材料股份有限公司 | Method for preparing regenerated copper-tungsten alloy powder |
| CN113477933A (en) * | 2021-07-02 | 2021-10-08 | 西安华力装备科技有限公司 | Process method for preparing fine tungsten alloy powder from waste residues |
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| CN103114204B (en) | 2015-05-06 |
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