CN110016563A - A kind of method of pyrocarbon vat black tungsten slag higher value application - Google Patents

A kind of method of pyrocarbon vat black tungsten slag higher value application Download PDF

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Publication number
CN110016563A
CN110016563A CN201910331091.XA CN201910331091A CN110016563A CN 110016563 A CN110016563 A CN 110016563A CN 201910331091 A CN201910331091 A CN 201910331091A CN 110016563 A CN110016563 A CN 110016563A
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slag
pyrocarbon
tungsten slag
alloy
black tungsten
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CN110016563B (en
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王旭
赵宝军
焦芸芬
郭超
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Jiangxi University of Science and Technology
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Jiangxi University of Science and Technology
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/002—Use of waste materials, e.g. slags
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B30/00—Obtaining antimony, arsenic or bismuth
    • C22B30/06—Obtaining bismuth
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1218—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/20—Obtaining niobium, tantalum or vanadium
    • C22B34/24—Obtaining niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/36—Obtaining tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B47/00—Obtaining manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working 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
    • C22B7/001—Dry processes
    • 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
    • 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
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The present invention relates to black tungsten Slag treatment technology, the method for specifically a kind of pyrocarbon vat black tungsten slag higher value application.The present invention is the following steps are included: (1) matches raw material；(2) compression moulding-pre-burning；(3) pyrocarbon restores；(4) collection of products.The black tungsten slag of soda boiling is carried out resource utilization using pyrocarbon restoring method by the present invention, and product alloy is W-Fe-Mn- (Nb, Ti, Bi), slag system CaO-SiO2- Al2O3,The energy consumption and cost problem of black tungsten Slag treatment are well solved, and environmental-friendly.Pyrocarbon reduction treatment tungsten slag makes every effort to restore tungsten slag under high temperature low energy consumption, efficiently separates valuable metal and intermediate alloy is made, secondary slag makes tungsten slag obtain higher value application and non-hazardousization processing as raw material prepared by glass, cement.

Description

A kind of method of pyrocarbon vat black tungsten slag higher value application
Technical field
The present invention relates to black tungsten Slag treatment technology, the method for specifically a kind of pyrocarbon vat black tungsten slag higher value application.
Background technique
China is that tungsten ore resource gross reserves accounts for the 56% of the world, and yield also occupies the first in the world, and accounting reaches generation within 2017 The 83% of boundary's total amount.Currently, prevailing technology is the transition of alkali leaching-purification-ammonium salt during China tungsten metallurgical production APT. Insoluble matter is referred to as tungsten slag during alkali leaching, comprising: (white tungsten fine ore leaches for black tungsten slag (wolframite leached mud), white tungsten slag Slag), black and white tungsten mixing slag (black and white tungsten bulk concentrate leached mud).China is incremented by every year with nearly 80,000 tons of amount at present, is contained in tungsten slag The valuable elements such as tungsten, manganese, iron, niobium, titanium, yttrium, zirconium, bismuth, tin, the metals such as tungsten therein, iron, manganese, which have, potential extracts value. Therefore, as tungsten production and tungsten Slag treatment big country, wherein valuable metal resource is of great significance higher value application.
Summary of the invention
It is an object of the present invention to provide a kind of method of pyrocarbon vat black tungsten slag higher value application, it be by pyrocarbon also Main valuable metal in the former black tungsten slag of onestep extraction.
A kind of technical solution of the present invention: method of pyrocarbon vat black tungsten slag higher value application, comprising the following steps:
(1) raw material is matched:
To be dehydrated black tungsten slag, graphite, anhydrous sodium metasilicate (Na2SiO3) it is raw material, mass percentage proportion in raw material: de- The black tungsten slag of water accounts for 80~85%, and graphite is 10~13%, anhydrous Na2SiO3Account for 2~10%；
(2) compression moulding-pre-burning:
Raw material in step (1) is sufficiently mixed, compression moulding under the conditions of pressure 5MPa~10MPa；In nitrogen protection, Pre-burning 1h is activated under the conditions of 600~800 DEG C of temperature；
(3) pyrocarbon restores:
To step (2) pre-burning product, reductase 12~3h at nitrogen protection, 1300~1500 DEG C of temperature；
(4) collection of products:
Liquid alloy and secondary slag separation (prior art) after step (3) are restored, wherein alloy cast ingot, secondary slag are empty Cold collection (prior art).
Main control condition and foundation:
1, guarantee that material composition sufficiently activates, increases the condition of reaction surface: being pressed under the conditions of pressure 5MPa~10MPa Type；Pre-burning 1h is activated under the conditions of nitrogen protection, 600~800 DEG C of temperature；
2, guarantee molding-pre-burning product sufficiently restore, the condition that slag gold efficiently separates: nitrogen protection, temperature 1300~ Reductase 12~3h at 1500 DEG C；
The black tungsten slag of soda boiling is carried out resource utilization using pyrocarbon restoring method by the present invention, and product alloy is mainly W- Fe-Mn- (Nb, Ti, Bi), slag system are mainly CaO-SiO2- Al2O3, well solved black tungsten Slag treatment energy consumption and at This problem, and it is environmental-friendly.Pyrocarbon reduction treatment tungsten slag makes every effort to restore tungsten slag under high temperature low energy consumption, efficiently separates valuable gold Category is made intermediate alloy, secondary slag as glass, cement preparation raw material and make tungsten slag obtain higher value application and non-hazardous Change processing.
Specific embodiment
Embodiment 1: black tungsten slag (mass percent 81%), graphite (mass percent 11%), anhydrous Na are dehydrated2SiO3(matter Amount percentage 8%) it is sufficiently mixed, compression moulding under the conditions of pressure 7Mpa activates under the conditions of nitrogen protection, 650 DEG C of temperature Pre-burning 1h；At 1350 DEG C of temperature, nitrogen protection condition reductase 12 .5h；Liquid alloy and the separation of secondary slag after reduction, alloy cast ingot, Secondary slag is through air-cooled collection.Alloy is mainly W-Fe-Mn- (Nb, Ti, Bi), and slag system is mainly CaO-SiO2- Al2O3。
Embodiment 2: black tungsten slag (mass percent 82%), graphite (mass percent 11.5%), anhydrous Na are dehydrated2SiO3 (mass percent 6.5%) is sufficiently mixed, compression moulding under the conditions of pressure 8Mpa, under the conditions of nitrogen protection, 700 DEG C of temperature Activate pre-burning 1h；At 1400 DEG C of temperature, nitrogen protection condition restores 3h；Liquid alloy and the separation of secondary slag, alloy casting after reduction Ingot, secondary slag is through air-cooled collection.Alloy is mainly W-Fe-Mn- (Nb, Ti, Bi), and slag system is mainly CaO-SiO2? Al2O3。
Embodiment 3: black tungsten slag (mass percent 83%), graphite (mass percent 12%), anhydrous Na are dehydrated2SiO3(matter Amount percentage 5%) it is sufficiently mixed, compression moulding under the conditions of pressure 9Mpa activates under the conditions of nitrogen protection, 750 DEG C of temperature Pre-burning 1h；At 1450 DEG C of temperature, nitrogen protection condition restores 3h；Liquid alloy and the separation of secondary slag after reduction, alloy cast ingot, two Secondary slag is through air-cooled collection.Alloy is mainly W-Fe-Mn- (Nb, Ti, Bi), and slag system is mainly CaO-SiO2- Al2O3。
Embodiment 4: black tungsten slag (mass percent 84%), graphite (mass percent 12.5%), anhydrous Na are dehydrated2SiO3 (mass percent 3.5%) is sufficiently mixed, compression moulding under the conditions of pressure 6Mpa, under the conditions of nitrogen protection, 750 DEG C of temperature Activate pre-burning 1h；At 1450 DEG C of temperature, nitrogen protection condition reductase 12 .5h；Liquid alloy and the separation of secondary slag, alloy after reduction Ingot casting, secondary slag is through air-cooled collection.Alloy is mainly W-Fe-Mn- (Nb, Ti, Bi), and slag system is mainly CaO-SiO2? Al2O3。
Embodiment 5: black tungsten slag (mass percent 85%), graphite (mass percent 13%), anhydrous Na are dehydrated2SiO3(matter Amount percentage 2%) it is sufficiently mixed, compression moulding under the conditions of pressure 10Mpa activates under the conditions of nitrogen protection, 800 DEG C of temperature Pre-burning 1h；At 1500 DEG C of temperature, nitrogen protection condition restores 3h；Liquid alloy and the separation of secondary slag after reduction, alloy cast ingot, two Secondary slag is through air-cooled collection.Alloy is mainly W-Fe-Mn- (Nb, Ti, Bi), and slag system is mainly CaO-SiO2- Al2O3。
Embodiment 6: black tungsten slag (mass percent 80%), graphite (mass percent 10%), anhydrous Na are dehydrated2SiO3(matter Amount percentage 10%) it is sufficiently mixed, compression moulding under the conditions of pressure 5Mpa activates under the conditions of nitrogen protection, 600 DEG C of temperature Pre-burning 1h；At 1300 DEG C of temperature, nitrogen protection condition reductase 12 h；Liquid alloy and the separation of secondary slag after reduction, alloy cast ingot, two Secondary slag is through air-cooled collection.Alloy is mainly W-Fe-Mn- (Nb, Ti, Bi), and slag system is mainly CaO-SiO2- Al2O3。

Claims (2)

1. a kind of method of pyrocarbon vat black tungsten slag higher value application, characterized in that the following steps are included:
(1) raw material is matched:
To be dehydrated black tungsten slag, graphite, anhydrous sodium metasilicate as raw material, mass percentage is matched in raw material: being dehydrated black tungsten slag and accounts for 80 ~85%, graphite is 10~13%, anhydrous Na2SiO3Account for 2~10%；
(2) compression moulding-pre-burning:
Raw material in step (1) is sufficiently mixed, compression moulding under the conditions of pressure 5MPa~10MPa；In nitrogen protection, temperature Pre-burning 1h is activated under the conditions of 600~800 DEG C；
(3) pyrocarbon restores:
To step (2) pre-burning product, reductase 12~3h at nitrogen protection, 1300~1500 DEG C of temperature；
(4) collection of products:
By after step (3) reduction liquid alloy and the separation of secondary slag, wherein alloy cast ingot, alloy be W-Fe-Mn- (Nb, Ti,Bi)；Secondary slag is through air-cooled collection, slag system CaO-SiO2- Al2O3。
2. the method for a kind of pyrocarbon vat black tungsten slag higher value application according to claim 1, it is characterized in that: by quality Percentage is respectively 81%, 11%, the 8% black tungsten slag of dehydration, graphite, anhydrous Na2SiO3It is sufficiently mixed, in pressure 7Mpa condition Lower compression moulding activates pre-burning 1h under the conditions of nitrogen protection, 650 DEG C of temperature；At 1350 DEG C of temperature, nitrogen protection condition is restored 2.5h；Liquid alloy and the separation of secondary slag, alloy cast ingot, alloy are W-Fe-Mn- (Nb, Ti, Bi) after reduction；Secondary slag warp Air-cooled collection, slag system CaO-SiO2- Al2O3。
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110656273A (en) * 2019-09-29 2020-01-07 中色（宁夏）东方集团有限公司 Method for preparing ferrotungsten alloy by carbon reduction
CN112322914A (en) * 2020-11-05 2021-02-05 江西理工大学 Method for modifying and extracting rare earth elements in scheelite slag-sintered red mud system
CN112593098A (en) * 2020-11-25 2021-04-02 中南大学 Method for extracting tungsten from tungsten-containing raw material by using hydrous sodium silicate
CN113999978A (en) * 2021-11-04 2022-02-01 江西钨业控股集团有限公司 Method for recovering valuable metal from tungsten slag
CN114317989A (en) * 2021-12-28 2022-04-12 厦门大学 Method for recovering valuable metals in waste tungsten slag

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RU2020175C1 (en) * 1992-03-19 1994-09-30 Алексей Федорович Вишкарев Process for recovering tungsten, scandium, iron and manganese from tungsten-containing raw material
CN103305707A (en) * 2013-06-25 2013-09-18 湖南柿竹园有色金属有限责任公司 Method for smelting bismuth-molybdenum or bismuth-tungsten concentrates
CN103614545A (en) * 2013-11-22 2014-03-05 中南大学 Method for treating low-grade tungsten concentrate and tungsten slag
CN107164644A (en) * 2017-06-01 2017-09-15 青岛聚鑫园工贸有限公司 A kind of method that efficient process tungsten waste produces coarse tungsten powder
CN108384960A (en) * 2018-03-30 2018-08-10 中南大学 A kind of method of synchronous extraction tungsten slag and tungsten, aluminium, sodium and iron in red mud
CN108796226A (en) * 2018-07-04 2018-11-13 赣州有色冶金研究所 A method of it recycling alkali and soaks tungsten slag

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* Cited by examiner, † Cited by third party
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RU2020175C1 (en) * 1992-03-19 1994-09-30 Алексей Федорович Вишкарев Process for recovering tungsten, scandium, iron and manganese from tungsten-containing raw material
CN103305707A (en) * 2013-06-25 2013-09-18 湖南柿竹园有色金属有限责任公司 Method for smelting bismuth-molybdenum or bismuth-tungsten concentrates
CN103614545A (en) * 2013-11-22 2014-03-05 中南大学 Method for treating low-grade tungsten concentrate and tungsten slag
CN107164644A (en) * 2017-06-01 2017-09-15 青岛聚鑫园工贸有限公司 A kind of method that efficient process tungsten waste produces coarse tungsten powder
CN108384960A (en) * 2018-03-30 2018-08-10 中南大学 A kind of method of synchronous extraction tungsten slag and tungsten, aluminium, sodium and iron in red mud
CN108796226A (en) * 2018-07-04 2018-11-13 赣州有色冶金研究所 A method of it recycling alkali and soaks tungsten slag

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110656273A (en) * 2019-09-29 2020-01-07 中色（宁夏）东方集团有限公司 Method for preparing ferrotungsten alloy by carbon reduction
CN112322914A (en) * 2020-11-05 2021-02-05 江西理工大学 Method for modifying and extracting rare earth elements in scheelite slag-sintered red mud system
CN112593098A (en) * 2020-11-25 2021-04-02 中南大学 Method for extracting tungsten from tungsten-containing raw material by using hydrous sodium silicate
CN112593098B (en) * 2020-11-25 2022-04-26 中南大学 Method for extracting tungsten from tungsten-containing raw material by using hydrous sodium silicate
CN113999978A (en) * 2021-11-04 2022-02-01 江西钨业控股集团有限公司 Method for recovering valuable metal from tungsten slag
CN114317989A (en) * 2021-12-28 2022-04-12 厦门大学 Method for recovering valuable metals in waste tungsten slag
CN114317989B (en) * 2021-12-28 2022-10-14 厦门大学 Method for recovering valuable metals in waste tungsten slag

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