CN103114204B - Method for recovering tungsten-base alloy waste - Google Patents
Method for recovering tungsten-base alloy waste Download PDFInfo
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- CN103114204B CN103114204B CN201310057884.XA CN201310057884A CN103114204B CN 103114204 B CN103114204 B CN 103114204B CN 201310057884 A CN201310057884 A CN 201310057884A CN 103114204 B CN103114204 B CN 103114204B
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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 reclaiming tungsten-base alloy waste.
Background technology
Tungsten is Nonrenewable resources, and the exploitation through for many years makes its reserves sharply decline, and be therefore the existing tungsten resource of protection, improve its utilization ratio, recycling tungsten seems particularly important.Usually, reclaiming tungsten-bast alloy has liquid-bath absorption method, hydrometallurgical and oxidation reduction process three kinds, and wherein, liquid-bath absorption method temperature is high, energy consumption is large, complex process, cost recovery are high; Hydrometallurgical technique is also quite complicated and easily cause serious pollution to environment; Only have that oxidation reduction process technique is simple, economic and reliable.Tungsten-base alloy waste after recovery is generally used for steel enterprise and produces 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 object of this invention is to provide a kind of method that can improve tungsten-base alloy waste utilization ratio, directly tungsten-base alloy waste be changed into high-quality tungstenalloy powder.
Technical scheme: the method for recovery tungsten-base alloy waste of the present invention, comprises the following steps:
Reclaim a method for tungsten-base alloy waste, it is characterized in that, comprise the following steps:
(1) pre-treatment tungsten-base alloy waste;
(2) pretreated tungsten-base alloy waste carries out oxidizing reaction: pretreated tungsten-base alloy waste to be contained in waste tray and to 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 control in-furnace temperature, tungsten-base alloy waste 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, controls in-furnace temperature, makes the oxide compound of tungsten-base alloy waste, in recovery furnace, reduction reaction occur.
Wherein, described step (1) is generally clean and break process tungsten-base alloy waste, 5-10%HCL and 5%NaOH can be adopted to clean tungsten-base alloy waste.Described step (2) oxidizing reaction temperature is 600-1100 DEG C, and preferred oxidizing temperature is 700-900 DEG C.Described step (2) reaction terminates rear auto stove-door and opens, and discharging detects, and selects grade product, and then the mode of grade product according to step (2) is sent in stove.Described step (3) reduction reaction temperature is 630-1200 DEG C, and preferred reduction temperature is 700-1000 DEG C.After described step (3) reaction terminates, the product after reduction reaction adds alloying element and makes tungstenalloy powder.Described alloying element is iron or nickel.
Beneficial effect: compared with prior art, its advantage is that tungsten-base alloy waste changes into high-quality tungstenalloy powder by redox reaction in specific equipment in the present invention, can be directly used in and produce High Performance W alloy, thus realizes resource and effectively recycle; This equipment adopts five band temperature controls simultaneously, semi-automatic mode charging, and automatic adjusting air inflow quantity, has carried out automatic control to the processing parameter affecting quality product, ensure that the quality of producing product.
Accompanying drawing explanation
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, be arranged in parallel four road waste tray guide rail, up and down each twice in body of heater 1, corresponds to stove inner orbit position and be provided with carrier pipe 2 outside the two ends of body of heater 1, at carrier pipe 2 external parcel water jacket 9, water jacket on discharge end carrier pipe 2 is the temperature in order to reduce discharging, so that collection material detects, the water jacket on feed end carrier pipe is to reduce the temperature of giving vent to anger.The mouth of pipe of carrier pipe 2 is provided with auto stove-door 3, and this auto stove-door 3 controls its opening and closing by hydraulic efficiency plant, outside the auto stove-door 3 of feed end, set gradually the feeding platform 4 corresponding with carrier pipe 2 position and puopulsion unit 5, and this puopulsion unit 5 is for promoting mainly oil cylinder.Elder generation is artificial to be loaded waste tray by tungsten-base alloy waste and is placed on feeding platform 4, restart machine, promote mainly oil cylinder waste tray to be pushed into transfer lime 2, be provided with in body of heater 1 and control sensor 16, for controlling waste material temperature of reaction, making waste material, at air atmosphere 600 ~ 1100 DEG C, tungsten base high-specific-gravity alloy waste material is oxidized to oxide compound, outfeed platforms 6 is set outside the auto stove-door 3 of discharge end, for artificially collecting the tungsten-base alloy waste through peroxidation, then detect.The carrier pipe 2 of discharge end is provided with inlet mouth 8, inlet mouth 8 connection traffic controller 13, for controlling the air input of hydrogen, the waste material through peroxidation is placed in feeding platform again, enter body of heater 1, at hydrogen atmosphere 630 ~ 1200 DEG C, high-density alloy waste material can be reduced into high-density alloy powder.The carrier pipe 2 of feed end is provided with air outlet 7, and mist collection bucket 10 is connected on the carrier pipe 2 of this end, and cooling channel 11 and explosionproof hole 12 are set on this mist collection bucket 10, air outlet 7 is all connected hydrogen pipeline with inlet mouth 8, the outer side of body of heater 1 is provided with gas recovery pipe 14, and on this pipe, circuit balancing valve 15 is installed, generally, equilibrium valve cuts out; Open before fire door, first open equilibrium valve, when oven door opening, hydrogen directly passes through in gas recovery pipe, then returns hydrogen pipeline, and does not pass through in body of heater, and when making oven door opening, stove internal gas pressure reduces, thus ensure that the safety of operator.
Embodiment 1: first, adopts 5%HCL and 5%NaOH to clean tungsten-base alloy waste by waste disposal frustillatum; Secondly, the pallet that tungsten-base alloy waste 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 control in-furnace temperature 600 DEG C, waste material, in recovery furnace, oxidizing reaction occurs, and tungsten-base alloy waste is oxidized to oxide compound; Reaction terminates rear auto stove-door 3 and opens, discharging; Then detect product, the qualified product of detection is placed on feeding platform 4 again, is advanced carrier pipe 2 by puopulsion unit 5, first pass into nitrogen in stove simultaneously, then pass into reducing gas hydrogen, there is reduction reaction in waste material in recovery furnace, temperature controls at 630 DEG C, and reaction terminates rear discharging and detects; Product after reduction reaction adds the alloying element such as iron, nickel and makes tungstenalloy powder.
Embodiment 2 is substantially identical with embodiment 1 step, and its difference is: HCL concentration is 10%, and oxidizing reaction temperature is 1100 DEG C, and reduction reaction temperature is 1200 DEG C.
Embodiment 3 is substantially identical with embodiment 1 step, and its difference is: HCL concentration is 7%, and oxidizing reaction temperature is 700 DEG C, and reduction reaction temperature is 700 DEG C.
Embodiment 4 is substantially identical with embodiment 1 step, and its difference is: oxidizing reaction temperature is 900 DEG C, and reduction reaction temperature is 1000 DEG C.
Embodiment 5 is substantially identical with embodiment 1 step, and its difference is: oxidizing reaction temperature is 800 DEG C, and reduction reaction temperature is 900 DEG C.
Claims (7)
1. reclaim a method for tungsten-base alloy waste, it is characterized in that, comprise the following steps:
(1) pre-treatment tungsten-base alloy waste;
(2) oxidizing reaction is carried out in recovery furnace, this recovery furnace comprises body of heater (1), be arranged in parallel in body of heater (1) four road waste tray guide rails, each twice up and down, outside the two ends of body of heater (1), correspond to stove inner orbit position be provided with carrier pipe (2), at carrier pipe (2) external parcel water jacket (9), the mouth of pipe of carrier pipe (2) is provided with auto stove-door (3), this auto stove-door (3) controls its opening and closing by hydraulic efficiency plant, the feeding platform (4) corresponding with carrier pipe (2) position and puopulsion unit (5) is set gradually outside the auto stove-door (3) of feed end, pretreated tungsten-base alloy waste is loaded waste tray and is placed on feeding platform (4), start the machine, auto stove-door (3) is opened, waste tray pushes into carrier pipe (2) by puopulsion unit (5), auto stove-door (3) is closed, the control sensor (16) for controlling waste material temperature of reaction is provided with in body of heater (1), waste material is made in air atmosphere tungsten-base alloy waste to be oxidized to oxide compound, outside the auto stove-door (3) of discharge end, outfeed platforms (6) is set, reaction terminates rear auto stove-door (3) and opens, artificially collect the tungsten-base alloy waste through peroxidation, then detect and select grade product, again grade product is sent in stove according to the mode of this step,
(3) reduction reaction: the carrier pipe (2) of discharge end is provided with inlet mouth (8), inlet mouth (8) connects the flow director (13) of the air input for controlling hydrogen, tungsten-base alloy waste through peroxidation is placed in feeding platform again, enter body of heater (1), tungsten-base alloy waste can be reduced into high-density alloy powder in a hydrogen atmosphere; The carrier pipe (2) of feed end is provided with air outlet (7), and above connect mist collection bucket (10) at the carrier pipe (2) of this end, and cooling channel (11) and explosionproof hole (12) are set on this mist collection bucket (10), air outlet (7) is all connected hydrogen pipeline with inlet mouth (8), body of heater (1) outer side is provided with gas recovery pipe (14), and on this pipe, install circuit balancing valve (15).
2. a kind of method reclaiming tungsten-base alloy waste according to claim 1, is characterized in that: described step (1) is cleaned and break process tungsten-base alloy waste.
3. a kind of method reclaiming tungsten-base alloy waste according to claim 2, is characterized in that: adopt 5-10%HCL and 5%NaOH to clean tungsten-base alloy waste.
4. a kind of method reclaiming tungsten-base alloy waste according to claim 1, is characterized in that: described step (2) oxidizing reaction temperature is 600-700 or 1100 DEG C.
5. a kind of method reclaiming tungsten-base alloy waste according to claim 1, is characterized in that: described step (3) reduction reaction temperature is 630-700 or 1000-1200 DEG C.
6. a kind of method reclaiming tungsten-base alloy waste according to claim 1, is characterized in that: after described step (3) reaction terminates, and the product after reduction reaction adds alloying element and makes tungstenalloy powder.
7. a kind of method reclaiming tungsten-base alloy waste according to claim 6, is characterized in that: described alloying element is iron or nickel.
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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 true CN103114204B (en) | 2015-05-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106191920B (en) * | 2016-08-13 | 2018-04-17 | 福达合金材料股份有限公司 | A kind of method that silver tungsten waste recovery recycles |
| 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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| 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 |
| CN102268557A (en) * | 2011-08-02 | 2011-12-07 | 云南锡业集团（控股）有限责任公司 | One-step oxidizing smelting, retailoring and slag fuming volatilization method for lead sulphide concentrate |
| CN202660886U (en) * | 2012-04-15 | 2013-01-09 | 徐文进 | Muffle furnace special for tungsten-molybdenum alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011083376A1 (en) * | 2010-01-08 | 2011-07-14 | Jayakannan Arumugavelu | A process for recycling of tungsten carbide alloy |
| 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 |
| CN102808085B (en) * | 2012-05-14 | 2013-10-16 | 北京工业大学 | Industrial method for recycling waste wolfram carbide-cobalt (WC-Co) hard alloy |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102268557A (en) * | 2011-08-02 | 2011-12-07 | 云南锡业集团（控股）有限责任公司 | One-step oxidizing smelting, retailoring and slag fuming volatilization method for lead sulphide concentrate |
| CN202660886U (en) * | 2012-04-15 | 2013-01-09 | 徐文进 | Muffle furnace special for tungsten-molybdenum alloy |
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