CN108796226A - A method of it recycling alkali and soaks tungsten slag - Google Patents

A method of it recycling alkali and soaks tungsten slag Download PDF

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Publication number
CN108796226A
CN108796226A CN201810726170.6A CN201810726170A CN108796226A CN 108796226 A CN108796226 A CN 108796226A CN 201810726170 A CN201810726170 A CN 201810726170A CN 108796226 A CN108796226 A CN 108796226A
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slag
tungsten
reduction
heavy metal
present
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CN108796226B (en
Inventor
张金祥
洪侃
文小强
管建红
李忠岐
普建
欧阳希
周新华
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Ganzhou Nonferrous Metallurgy Research Institute Co.,Ltd.
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GANZHOU NONFERROUS METALLURGICAL INSTITUTE
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001Dry processes
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B13/00Obtaining lead
    • C22B13/02Obtaining lead by dry processes
    • C22B13/025Recovery from waste materials
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B30/00Obtaining antimony, arsenic or bismuth
    • C22B30/04Obtaining arsenic
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B43/00Obtaining mercury
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/04Making ferrous alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The present invention provides a kind of method that recycling alkali soaks tungsten slag, the present invention carries out pre-burning reduction after mixing alkali leaching tungsten slag with reducing agent, is collected simultaneously the heavy metal of volatilization, obtains primary slag and heavy metal alloy;The heavy metal alloy is a variety of in As, Pb and Hg;Smelting reduction is carried out after obtained primary slag is mixed with slag former obtains secondary slag and ferroalloy.Acid is not used in the method for the present invention, reduces pollution;Obtained ferroalloy can be directly used for potassium steel or the intermediate alloy of other special steels uses;Content of beary metal in the secondary slag generated after tungsten slag secondary reduction is less than 100ppm, reaches national environmental standard, can stack naturally, or for fields such as road construction, mine filling and devitrified glasses.

Description

A method of it recycling alkali and soaks tungsten slag
Technical field
The present invention relates to metallurgical technology field, more particularly to a kind of method recycling alkali leaching tungsten slag.
Background technology
There is tungsten ore resource most abundant in the world in China, while being also the big producer of ammonium paratungstate (APT), and APT gives birth to A large amount of solid waste, the tungsten slag mainly generated after tungsten concentrate soda boiling are generated during production.Due to the normal association of tungsten concentrate some Heavy metal (such as As, Pb, Hg), these heavy metals eventually enter into tungsten slag.Since tungsten smelting process changes mineral physics knot The chemical form of structure and certain components, and it is mixed into CO3 2-、PO4 3-、F-Plasma, make tungsten slag composition and each side's surface properties compared with For complexity, it is difficult to be recycled again with physical upgrading method to cause tungsten slag.Utilize traditional wet method, pyrogenic process or wet method-pyrogenic process etc. Technology recycling wherein valuable metal when the problems such as that there are cost recovery is high, deficiency in economic performance, so as to cause the comprehensive utilization of tungsten slag Rate is very low.And a large amount of tungsten slags do not only take up a large amount of soils by unordered stacking, water system, soil and air are caused seriously to pollute and Harm;Also make a large amount of valuable metal resource that cannot efficiently use, causes waste and the stream of tungsten and other valuable metal resources It loses.According to statistics, the generation coefficient of tungsten slag is about 0.8, i.e., often production 1t tungsten primary product (sodium tungstate, APT) will generate the left sides 0.8t Right tungsten slag, there are about 60,000 tons of tungsten slag mucks to deposit every year in the whole nation, and decades produce the cumulative tungsten slag more than million tons and do not make to locate Reason.Therefore, the comprehensive reutilization of research tungsten slag is of great significance.
Chinese patent CN103290224A discloses a kind of recovery process of valuable metal in tungsten slag, by tungsten slag and 15%~ It is molten that 25% hydrochloric acid boils acid, and NaF is added, sodium nitrate after the completion of reaction, filters to get filtrate;Then filtrate is extracted Crystallization obtains APT;Alkali soluble is carried out to filter residue, Ta, Nb, Sn valuable metal are directly recycled in press filtration.Although the method can synthetical recovery portion Divide valuable metal, but fails to solve the heavy metal pollution problem of the dangerous wastes element such as As, Pb, Hg in tungsten slag.
Invention content
In view of this, present invention aims at provide a kind of method for recycling alkali and soaking tungsten slag, side provided by the invention Method can be in synthetical recovery tungsten slag a variety of valuable metal elements, and solve the heavy metal pollution problem of As, Pb and Hg in tungsten slag.
The present invention provides a kind of methods that recycling alkali soaks tungsten slag, include the following steps:
1) pre-burning reduction is carried out after mixing alkali leaching tungsten slag with reducing agent, is collected simultaneously the heavy metal of volatilization, is obtained primary Slag and heavy metal alloy;The heavy metal alloy is a variety of in As, Pb and Hg;
2) smelting reduction is carried out after mixing the primary slag that step 1) obtains with slag former obtains secondary slag and ferroalloy.
Preferably, the reducing agent in the step 1) includes carbon, ferrosilicon, ferromanganese, calcium carbide, silico-calcium, magnesium, aluminium or rare earth gold Belong to.
Preferably, the mass ratio of the alkali leaching tungsten slag and reducing agent in the step 1) is 3~30:1.
Preferably, the temperature of step 1) the pre-burning reduction is 500~1200 DEG C, and the time of the pre-burning reduction is 0.1 ~3h.
Preferably, in the step 2) slag former include one kind in calcium oxide, aluminium oxide, calcium hydroxide and dolomite or It is several.
Preferably, the mass ratio of the primary slag in the step 2) and slag former is 3~50:1.
Preferably, the temperature of smelting reduction is 1400~1600 DEG C in the step 2), time of smelting reduction is 0.5~ 5h。
Preferably, the content of As, Pb and Hg are respectively lower than 100ppm in secondary slag in told step 2).
Preferably, ferroalloy is made of the element of following mass percentage in the step 2):
Manganese 5~30%
The total content 1~5% of tungsten and niobium
Remaining is iron.
Advantageous effects:The present invention provides a kind of method that recycling alkali soaks tungsten slag, alkali is soaked tungsten slag by the present invention Pre-burning reduction is carried out after being mixed with reducing agent, is collected simultaneously the heavy metal of volatilization, is obtained primary slag and heavy metal alloy;It is described heavy Metal alloy is a variety of in As, Pb and Hg;Smelting reduction is carried out after primary slag is mixed with slag former obtains secondary slag and iron Alloy.The present invention uses pre-burning reducing process, recycles heavy metal element As, Pb and Hg in tungsten slag, and it is dirty to solve tungsten residue heavy metal Dye problem, while can tentatively restore iron oxide and tungsten oxide in tungsten slag;Using smelting reducing process, after pre-burning can be restored Valuable metal element smelting reduction in tungsten slag is ferroalloy, and promotes reduction and the slag gold point of tungsten slag by adding slag former From.Acid is not used in the present invention, reduces pollution;And obtained ferroalloy has higher purity, and contain more manganese (5 ~30%) and a small amount of tungsten and niobium (1~5%), the intermediate alloy that can be directly used for potassium steel or other special steels use, With higher economic value;Content of beary metal in the secondary slag generated after tungsten slag secondary reduction is less than 100ppm, reaches state Family's environmental protection standard, can stack naturally, or for fields such as road construction, mine filling and devitrified glasses.
Specific implementation mode
The present invention provides a kind of methods that recycling alkali soaks tungsten slag, include the following steps:
1) pre-burning reduction is carried out after mixing alkali leaching tungsten slag with reducing agent, is collected simultaneously the heavy metal of volatilization, is obtained primary Slag and heavy metal alloy;The heavy metal alloy is a variety of in As, Pb and Hg;
2) smelting reduction is carried out after mixing the primary slag that step 1) obtains with slag former, obtains secondary slag and ferroalloy.
The present invention carries out pre-burning reduction after mixing alkali leaching tungsten slag with reducing agent, is collected simultaneously the heavy metal of volatilization, obtains Primary slag and heavy metal alloy;The heavy metal alloy is a variety of in As, Pb and Hg.
In the present invention, the alkali leaching tungsten slag is preferably the tungsten generated after tungsten concentrate soda boiling in ammonium paratungstate generating process Slag.
In the present invention, the reducing agent preferably includes carbon, ferrosilicon, ferromanganese, calcium carbide, silico-calcium, magnesium, aluminium or rare earth gold Belong to.
In the present invention, the mass ratio of the alkali leaching tungsten slag and reducing agent is preferably 3~30:1, more preferably 10~25: 1, most preferably 15~20:1.
The method that the present invention mixes alkali leaching tungsten slag with reducing agent is not particularly limited, and selects those skilled in the art known Mixed method.In the present invention, it is preferred to which the method using ball milling is mixed.
The present invention is not particularly limited the granularity after ball milling, selects granularity well known to those skilled in the art.
The present invention is not particularly limited the method for ball milling, selects method well known to those skilled in the art.
In the present invention, the temperature of the pre-burning reduction is preferably 500~1200 DEG C, more preferably 800~1000 DEG C, institute The time for stating pre-burning reduction is preferably 0.1~3h, more preferably 0.5~2.5h, most preferably 1.5~2h.The present invention preferably from Room temperature is to pre-burning reduction temperature, and the heating rate is preferably 5~30 DEG C/min, more preferably 10~30 DEG C/min, most Preferably 20~30 DEG C/min.
The present invention uses pre-burning reducing process, recycles heavy metal element As, Pb and Hg in tungsten slag, solves tungsten residue heavy metal Pollution problem, while can tentatively restore iron oxide and tungsten oxide in tungsten slag.
The device that the present invention restores pre-burning is not particularly limited, and selects device well known to those skilled in the art, In the present invention, it is preferred to using tunnel atmosphere furnace.
In the present invention, it is preferred to condense the heavy metal of volatilization to obtain heavy metal alloy.
In the present invention, the temperature of the condensation is preferably 0~200 DEG C, more preferably 5~50 DEG C.
In the present invention, the heavy metal alloy can be used as producing the raw material of arsenic, lead, mercury elemental metals.
In the present invention, the alkali leaching tungsten slag preferably carries out drying and processing before pre-burning restores.
In the present invention, the temperature of the drying and processing is preferably 80~300 DEG C, more preferably 100~200 DEG C;It is described The time of drying and processing is preferably 2~12h, more preferably 4~8h.
The present invention is not particularly limited the method for drying and processing, selects furnace drying method well known to those skilled in the art i.e. Can, it is preferably carried out by way of baking oven or flame baking in the present invention.
The present invention removes the low-melting impurities such as moisture and the greasy filth in tungsten slag by drying and processing.
After obtaining primary slag, the present invention carries out smelting reduction after mixing obtained primary slag with slag former, obtains secondary Slag and ferroalloy.
In the present invention, the slag former preferably include one kind in calcium oxide, aluminium oxide, calcium hydroxide and dolomite or It is several, more preferably calcium oxide and aluminium oxide.In the present invention, when slag former is two or more mixture, the present invention couple The proportioning of each slag former is not particularly limited in mixture, is mixed with arbitrary proportion.
In the present invention, the mass ratio of the primary slag and slag former is preferably 3~50:1, more preferably 10~40:1, Most preferably 20~30:1.
The method that the present invention mixes primary slag with slag former is not particularly limited, and is selected well known to those skilled in the art Mixed method.In the present invention, it is preferred to be mixed with the method for ball milling.
The present invention is not particularly limited the granularity after the ball milling, selects granularity well known to those skilled in the art i.e. It can.
The present invention is not particularly limited the method for ball milling, selects method well known to those skilled in the art.
The present invention promotes the reduction of tungsten slag to be detached with slag gold by adding slag former.
In the present invention, the temperature of the smelting reduction is preferably 1400~1600 DEG C, more preferably 1450~1550 DEG C; The time of the smelting reduction is preferably 0.5~5h, more preferably 1~4h, most preferably 2~3h.Heating rate is preferably 1~ 30 DEG C/min, more preferably 5~15 DEG C/min
The present invention is not particularly limited the device of smelting reduction, selects device well known to those skilled in the art. The present invention is preferably vacuum induction melting furnace.
In the present invention, the content of As, Pb and Hg are independently preferably less than 100ppm in the secondary slag, more preferably Less than 80ppm.
In the present invention, the secondary slag, which can directly be stacked, is either used for road construction, mine filling or devitrified glass Equal fields.
In the present invention, the ferroalloy alloy is preferably made of the element of following mass percentage:
Manganese 5~30%
The total content 1~5% of tungsten and niobium
Remaining is iron.
The ferroalloy that the present invention obtains can be directly used for potassium steel or the intermediate alloy of other special steels uses.
In the present invention, after the smelting reduction, furnace cooling or cast of coming out of the stove preferably is carried out to high temperature reduction reaction solution, obtained Ferroalloy and secondary slag.
The present invention is not particularly limited the concrete operations of furnace cooling and cast of coming out of the stove, and selects art technology arbitrarily well known Operation.
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention Content is not limited solely to the following examples.
Embodiment 1
Tungsten slag derives from domestic ammonium paratungstate (APT) manufacturing enterprise
Dry tungsten slag 200g, carbon dust 30g, calcium oxide 15g, aluminium oxide 10g are weighed, ball milling mixing is placed on alumina crucible In, pre-burning reduction is carried out in tunnel atmosphere furnace.Pre-burning reducing process is:900 DEG C of heat preservations 0.5 of low-temperature zone first in continuous tunnel furnace Hour, As, Pb, Hg heavy metal of low-temperature zone reduction volatilization in collection obtain heavy metal alloy by condensation;Subsequently enter high temperature 1450 DEG C of heat preservation 1h of section, carry out the reaction of tungsten slag smelting reduction and the separation of slag gold, subsequent furnace cooling are cooled to room temperature, come out of the stove, and obtain Ferroalloy productor and secondary slag.By being weighed to ferroalloy and composition detection, the results are shown in Table 1, as shown in Table 1, Iron yield reaches 96.78%, and manganese yield reaches 61.96%, and tungsten yield reaches 71.85%, Nb yields and reaches 73.21, which closes Gold can be used for preparing the intermediate alloy raw material of steel alloy.Toxicity characteristic leaching procedure is carried out to secondary slag, as a result reaches national environmental protection mark It is accurate.
Each component content table of comparisons in front and back tungsten slag is restored in 1 embodiment 1 of table
Embodiment 2
Dry tungsten slag 1000g is weighed, carbon dust 150g, ball milling mixing is subsequently placed in alumina crucible, in box atmosphere furnace Carry out pre-burning reduction.Reducing process is:860 DEG C keep the temperature 1 hour, then furnace cooling.Reduction process leads to nitrogen protection, in atmosphere The exhaust outlet of stove collects As, Pb, Hg heavy metal of reduction process volatilization by condensation, obtains heavy metal alloy.Also by atmosphere furnace Primary slag after original takes out, and adds slag former calcium oxide 70g, aluminium oxide 50g, after ball milling mixing, briquet.Then 5 Smelting reduction is carried out in feather weight vacuum induction melting furnace, melting kettle uses high purity graphite crucible, smelting temperature control to exist 1500 DEG C~1550 DEG C, melting 5min is kept the temperature, subsequent tapping casting obtains ferroalloy ingot casting and secondary slag.By to ferroalloy It is weighed and composition detection, the results are shown in Table 2, and as shown in Table 2, iron yield reaches 95.72%, and manganese yield reaches 68.33%, tungsten yield reaches 73.48%, Nb yields and reaches 70.56, which can be used for preparing the intermediate alloy of steel alloy Raw material.Toxicity characteristic leaching procedure is carried out to secondary slag, as a result reaches national environmental standard.
Each component content table of comparisons in front and back tungsten slag is restored in 2 embodiment 2 of table
Embodiment 3
Dry tungsten slag 500g is weighed, carbon dust 80g is weighed, ball milling mixing is subsequently placed in alumina crucible, in box atmosphere furnace Middle progress pre-burning reduction.Reducing process is:900 DEG C keep the temperature 0.5 hour, then furnace cooling.Reduction process leads to nitrogen protection, The exhaust outlet of atmosphere furnace collects As, Pb, Hg heavy metal of reduction process volatilization by condensation, obtains heavy metal alloy.By atmosphere Primary slag after stove reduction takes out, and adds slag former calcium oxide 40g, aluminium oxide 25g, after ball milling mixing, briquet.Then The smelting reduction in vacuum carbon tube furnace.Reducing process is:1550 DEG C heat preservation 1.5h, carry out tungsten slag final stage reduction reaction with And the separation of slag gold, subsequent furnace cooling are cooled to room temperature, come out of the stove, and obtain ferroalloy productor and secondary slag.By claiming to ferroalloy Weight and composition detection, the results are shown in Table 3, and as shown in Table 3, iron yield reaches 98.25%, and manganese yield reaches 67.18%, tungsten Yield reaches 73.47%, Nb yields and reaches 80.22%, which can be used for preparing the intermediate raw material of steel alloy.To secondary slag Toxicity characteristic leaching procedure is carried out, national environmental standard is as a result reached.
Each component content table of comparisons in front and back tungsten slag is restored in 3 embodiment 3 of table
Embodiment 4
Dry tungsten slag 500g is weighed, carbon dust 30g is weighed, ball milling mixing is subsequently placed in alumina crucible, in box atmosphere furnace Middle progress pre-burning reduction.Reducing process is:1200 DEG C keep the temperature 0.1 hour, then furnace cooling.Reduction process leads to nitrogen protection, As, Pb, Hg heavy metal that reduction process is volatilized are collected by condensation in the exhaust outlet of atmosphere furnace, obtain heavy metal alloy.By gas Primary slag after the reduction of atmosphere stove takes out, and adds reducing agent silicon calcium powder 80g and slag former calcium hydroxide 30g, after ball milling mixing, pressure Block is made.The then smelting reduction in vacuum carbon tube furnace.Reducing process is:1600 DEG C of heat preservation 0.5h, carry out the last rank of tungsten slag Section reduction reaction and the separation of slag gold, subsequent furnace cooling are cooled to room temperature, come out of the stove, and obtain ferroalloy productor and secondary slag.By right Ferroalloy is weighed and composition detection, and the results are shown in Table 5, and as shown in Table 5, iron yield reaches 97.28%, and manganese yield reaches To 66.39%, tungsten yield reaches 73.29%, Nb yields and reaches 77.73%, which can be used for preparing the centre of steel alloy Raw material.Toxicity characteristic leaching procedure is carried out to secondary slag, as a result reaches national environmental standard.
Each component content table of comparisons in front and back tungsten slag is restored in 4 embodiment 4 of table
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (9)

1. a kind of method recycling alkali leaching tungsten slag, includes the following steps:
1) pre-burning reduction is carried out after mixing alkali leaching tungsten slag with reducing agent, it is in pre-burning reduction process that the heavy metal of volatilization is cold It is solidifying, obtain primary slag and heavy metal alloy;The heavy metal alloy is a variety of in As, Pb and Hg;
2) smelting reduction is carried out after mixing the primary slag that step 1) obtains with slag former, obtains secondary slag and ferroalloy.
2. according to the method described in claim 1, it is characterized in that, the reducing agent in the step 1) includes carbon, ferrosilicon, manganese Iron, calcium carbide, silico-calcium, magnesium, aluminium or rare earth metal.
3. method according to claim 1 or 2, which is characterized in that alkali in the step 1) leaching tungsten slag and reducing agent Mass ratio is 3~30:1.
4. according to the method described in claim 1, it is characterized in that, the step 1) pre-burning reduction temperature be 500~ 1200 DEG C, the time of the pre-burning reduction is 0.1~3h.
5. according to the method described in claim 1, it is characterized in that, in the step 2) slag former include calcium oxide, aluminium oxide, One or more of calcium hydroxide and dolomite.
6. method according to claim 1 or 5, which is characterized in that the quality of primary slag and slag former in the step 2) Than being 3~50:1.
7. according to the method described in claim 1, it is characterized in that, in the step 2) smelting reduction temperature be 1400~ 1600 DEG C, the time of smelting reduction is 0.5~5h.
8. according to the method described in claim 1, it is characterized in that, the content of As, Pb and Hg are only in the secondary slag of the step 2) On the spot it is less than 100ppm.
9. according to the method described in claim 1, it is characterized in that, ferroalloy is by following mass percentage in the step 2) Element composition:
Manganese 5~30%
The total content 1~5% of tungsten and niobium
Remaining is iron.
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CN109881016A (en) * 2019-04-24 2019-06-14 江西理工大学 The method that a kind of disposition of soda boiling tungsten slag harmlessness and valuable metal extract
CN110016563A (en) * 2019-04-24 2019-07-16 江西理工大学 A kind of method of pyrocarbon vat black tungsten slag higher value application
CN110066146A (en) * 2019-04-23 2019-07-30 南昌大学 The recycling of tungsten slag and reuse method
CN111057855A (en) * 2019-12-24 2020-04-24 南昌大学 Tungsten smelting slag alloying and microcrystallization synchronous treatment method
CN111440953A (en) * 2020-05-25 2020-07-24 赣州有色冶金研究所 Method for synergistically recycling tungsten slag and multi-element iron-rich slag
CN111826529A (en) * 2020-06-28 2020-10-27 河南豫光金铅股份有限公司 Separation smelting method of high-arsenic high-lead copper alloy

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CN105586491A (en) * 2016-01-18 2016-05-18 重庆科技学院 Comprehensive recycling method for waste hard alloy

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CN102108449A (en) * 2009-12-29 2011-06-29 厦门紫金矿冶技术有限公司 Method for preprocessing scheelite and preparing ferro-tungsten
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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN110066146A (en) * 2019-04-23 2019-07-30 南昌大学 The recycling of tungsten slag and reuse method
CN109881016A (en) * 2019-04-24 2019-06-14 江西理工大学 The method that a kind of disposition of soda boiling tungsten slag harmlessness and valuable metal extract
CN110016563A (en) * 2019-04-24 2019-07-16 江西理工大学 A kind of method of pyrocarbon vat black tungsten slag higher value application
CN110016563B (en) * 2019-04-24 2020-11-06 江西理工大学 High-value utilization method of high-temperature carbon reduction black tungsten slag
CN109881016B (en) * 2019-04-24 2021-07-09 江西理工大学 Method for harmless treatment of alkali-boiled tungsten residues and extraction of valuable metals
CN111057855A (en) * 2019-12-24 2020-04-24 南昌大学 Tungsten smelting slag alloying and microcrystallization synchronous treatment method
CN111440953A (en) * 2020-05-25 2020-07-24 赣州有色冶金研究所 Method for synergistically recycling tungsten slag and multi-element iron-rich slag
CN111826529A (en) * 2020-06-28 2020-10-27 河南豫光金铅股份有限公司 Separation smelting method of high-arsenic high-lead copper alloy
CN111826529B (en) * 2020-06-28 2021-10-22 河南豫光金铅股份有限公司 Separation smelting method of high-arsenic high-lead copper alloy

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