CN111118290B - Method for recovering vanadium-containing substances in vanadium mud - Google Patents

Method for recovering vanadium-containing substances in vanadium mud Download PDF

Info

Publication number
CN111118290B
CN111118290B CN201911183501.7A CN201911183501A CN111118290B CN 111118290 B CN111118290 B CN 111118290B CN 201911183501 A CN201911183501 A CN 201911183501A CN 111118290 B CN111118290 B CN 111118290B
Authority
CN
China
Prior art keywords
vanadium
mud
mixture
rotary kiln
roasting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201911183501.7A
Other languages
Chinese (zh)
Other versions
CN111118290A (en
Inventor
沈国军
梁亚军
尤金玉
秦永峰
张红勇
张艳艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HBIS Co Ltd Chengde Branch
Original Assignee
HBIS Co Ltd Chengde Branch
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HBIS Co Ltd Chengde Branch filed Critical HBIS Co Ltd Chengde Branch
Priority to CN201911183501.7A priority Critical patent/CN111118290B/en
Publication of CN111118290A publication Critical patent/CN111118290A/en
Application granted granted Critical
Publication of CN111118290B publication Critical patent/CN111118290B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C22B7/006—Wet 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting 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
    • C22B34/22—Obtaining vanadium
    • 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
    • C22B7/04—Working-up slag
    • 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

Landscapes

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

Abstract

The invention relates to a method for recovering vanadium-containing substances in vanadium mud, belonging to the technical field of recycling vanadium-containing solid waste resources, and the method comprises the following steps: (1) uniformly mixing vanadium mud and secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade in the mixture is 2.00-3.50%, the vanadium grade in the vanadium mud is 3.66-4.86%, and the vanadium grade in the secondary slag is 1.00-1.50%; (2) the mixture is sent to a rotary kiln for roasting, and in the roasting process of the rotary kiln, the temperature of a preheating zone is 200-300 ℃, the temperature of a burning zone is 780-830 ℃, and the temperature of a cooling zone is 330-430 ℃; (3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residues. The invention provides a new recycling channel for secondary roasting of vanadium-containing solid wastes, and the recovery rate of vanadium is more than or equal to 94 percent.

Description

Method for recovering vanadium-containing substances in vanadium mud
Technical Field
The invention belongs to the technical field of recycling vanadium-containing solid waste resources, and particularly relates to a method for recycling vanadium-containing substances in vanadium mud.
Background
Vanadium mud is solid waste generated in the production process of vanadium oxide, and contains a large amount of fine ammonium vanadate particles and partially incompletely-reacted materials, the vanadium mud is extruded into a cake through a plate frame in the traditional treatment mode and sold in a solid waste form, the vanadium-containing materials cannot be recovered in the vanadium mud in the treatment mode, resource waste is caused, meanwhile, a large amount of solid waste is accumulated in a factory building, the production is seriously influenced, and the environment-friendly situation of open-air stacking is very serious. With the improvement of the awareness of environmental protection and energy conservation of people, the treatment and recycling of solid wastes become more and more important, and vanadium mud contains heavy metals such as V and the like, belongs to dangerous solid wastes, has great harm and also contains a large amount of unrecovered vanadium compounds. At present, no good treatment method for vanadium mud exists, harmful substances are contained in the vanadium mud, the environment is polluted, a large amount of unconverted insoluble vanadium compounds and a small amount of soluble vanadium compounds are wasted in the traditional treatment mode, whether the solid waste can be recycled becomes a key bottleneck for restricting the energy expansion of vanadium products, and the problem to be solved urgently in the industry is solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for recovering vanadium-containing substances in vanadium mud, which can solve the problems that the existing vanadium mud is not easy to treat, causes environmental pollution, cannot comprehensively utilize resources and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method for recovering vanadium-containing substances in vanadium sludge, which comprises the following steps:
(1) uniformly mixing the vanadium mud and the secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade in the mixture is 2.0-3.5%, and the proportion of the vanadium mud and the secondary slag in the mixture is determined by the following formula:
Mmud/MSlag=（VMixing of-VSlag）/（VMud- VMixing of）
Wherein M isMudIs the mass of vanadium mud, MSlagIs the secondary slag mass, VMixing ofIs the vanadium grade, V, of the mixtureSlagIs the vanadium grade of the secondary slag, VMudThe vanadium grade of the vanadium mud is obtained;
(2) the mixture is sent into a rotary kiln for roasting, the temperature of a preheating zone is 200-300 ℃ in the rotary kiln roasting process, the preheating zone accounts for 1/4-1/3 of the length of the rotary kiln, and the roasting time at the stage is 1-1.7 h; the temperature of the firing zone is 780-830 ℃, which accounts for 7/15-11/20 of the length of the rotary kiln, and the firing time at this stage is 1.9-2.8 h; the temperature of the cooling zone is 330-430 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at this stage is 0.8-1 h; the mixture reacts in a rotary kiln for 4-5 h;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residues.
The grade of vanadium in the vanadium mud obtained in the step (1) is 3.66-4.86%.
The secondary slag in the step (1) is the residue obtained after roasting and washing the primary slag in the production process of vanadium oxide, and the grade of vanadium in the secondary slag is 1.00-1.50%.
In the step (1), the passing rate of the secondary slag with the granularity of 120 meshes is more than or equal to 80 percent, and the passing rate of the vanadium mud with the granularity of 120 meshes is more than or equal to 20 percent.
In the rotary kiln roasting process in the step (2), the oxygen content of roasting atmosphere is 10-16%.
The recovery rate of vanadium element in the vanadium mud is more than or equal to 94 percent.
In the rotary kiln roasting process, in the process of generating soluble vanadium from insoluble vanadium, the vanadium extraction raw material is from vanadium titano-magnetite, so that vanadium mostly exists in the form of vanadium spinel, and the reaction equation is as follows:
2FeO(FeV)2O3+2O2=FeV2O3+2Fe2O3+V2O5
Na2CO3+V2O5=2NaVO3+CO2
the invention relates to a resource recycling process of solid waste vanadium mud, which is characterized in that vanadium mud and secondary slag are uniformly mixed according to a certain proportion, and insoluble vanadium in the mixed materials is generated into soluble vanadium through roasting in a rotary kiln and oxidation-reduction reaction. In the process, insoluble vanadium compounds in the vanadium mud are used as reactants, the addition of the vanadium mud improves the vanadium-containing grade of the secondary slag, and the reaction balance is moved to the right, so that the conversion rate is improved. And moreover, the vanadium mud particles are larger than the secondary slag particles, so that the reactants are fully contacted in the process of loosening the materials, and the conversion rate is improved.
The addition of industrial salt to the secondary slag can loosen the material, but chloride ions can corrode equipment in the sewage treatment stage. The vanadium mud contains partial particles larger than the secondary slag, and the vanadium mud is added into the secondary slag instead of industrial salt, so that the problem that the secondary slag does not contain additives to loosen materials is solved while the vanadium mud is recycled. The filling coefficient of the original secondary slag added with salt is 0.5-1% (mass ratio), the proportion of large particles in the vanadium mud is about 0.2%, and the filling coefficient of the secondary slag added with salt can be reached when the proportion of the vanadium mud and the secondary slag is 0.38, so that the minimum adding amount of the vanadium mud is defined. According to research, when the vanadium grade of the mixture reaches more than 3.5%, the content of the ball material of the material in the kiln is too high, and the soluble vanadium in the ball material in the leaching process is not easy to leach, so that the leaching of the next working procedure is greatly influenced, and the maximum adding proportion of the vanadium mud is defined to be 1.84.
The roasted material is washed to extract soluble vanadium converted from vanadium mud and the soluble vanadium contained in the vanadium mud again, so that harmful substances are fully removed, the vanadium is fully recovered, the environment is protected, the resource waste is reduced, and the economic benefit is improved.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: 1. the invention provides a new channel for recycling vanadium-containing waste vanadium mud through secondary roasting, and realizes efficient utilization and clean production of vanadium resources. 2. The production process can be put into use on the basis of the original process equipment, and new equipment is not required to be added. 3. The vanadium mud is used for replacing industrial salt, the cost is reduced, and the recovery rate of vanadium is up to more than 94%.
The method of the invention is referred to as vanadium-titanium material (2007 metallurgy industry publishers).
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The method for recovering vanadium-containing substances in vanadium sludge comprises the following steps:
(1) uniformly mixing the impurity-removed vanadium mud and secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is 2.00 percent, the total content of vanadium elements is 20kg, and the proportion M of the vanadium mud to the secondary slag in the mixtureMud/MSlagIs 0.35; the vanadium grade in the vanadium mud is 4.86 percent, and the 120-mesh sieve passing rate is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.00 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) feeding the mixture into a rotary kiln for roasting, wherein in the rotary kiln roasting process, the oxygen content of the roasting atmosphere is 16%, the temperature of a preheating zone is 200 ℃, 1/3 which accounts for the length of the rotary kiln, and the roasting time at the stage is 1.3 h; the temperature of the burning zone is 780 ℃, which accounts for 7/15 the length of the rotary kiln, and the burning time at this stage is 1.9 h; the temperature of the cooling zone is 330 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at the stage is 0.8 h; the mixture reacts in a rotary kiln for 4 hours; making insoluble vanadium in the vanadium to generate soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 18.8kg, and the recovery rate of the vanadium is 94%.
Example 2
(1) Uniformly mixing the impurity-removed vanadium mud and secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is 2.30 percent, the total content of vanadium elements is 23kg, and the proportion M of the vanadium mud to the secondary slag in the mixtureMud/MSlagIs 0.45; the vanadium grade in the vanadium mud is 4.50 percent, and the 120-mesh sieve passing rate is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.30 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) feeding the mixture into a rotary kiln for roasting, wherein in the rotary kiln roasting process, the oxygen content of the roasting atmosphere is 15.6%, the temperature of a preheating zone is 210 ℃, 1/3 which accounts for the length of the rotary kiln, and the roasting time at the stage is 1.5 h; the temperature of the burning zone is 790 ℃, which accounts for 7/15 the length of the rotary kiln, and the burning time at this stage is 2.1 h; the temperature of the cooling zone is 340 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at the stage is 0.9 h; the mixture reacts in a rotary kiln for 4.5 hours, so that insoluble vanadium in the mixture generates soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 21.7kg, and the recovery rate of the vanadium is 94.5%.
Example 3
(1) Uniformly mixing the impurity-removed vanadium mud and the secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is
2.70 percent, the total content of vanadium element is 27kg, and the proportion M of vanadium mud and secondary slag in the mixtureMud/MSlagIs 1; the vanadium grade in the vanadium mud is 3.90 percent, and the 120-mesh sieve passing rate is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.50 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) the mixture is sent into a rotary kiln for roasting, and the oxygen content of the roasting atmosphere in the roasting process of the rotary kiln
15.1 percent, the temperature of a preheating zone is 220 ℃, which accounts for 3/10 percent of the length of the rotary kiln, and the roasting time at this stage is 1.3 hours; the temperature of the burning zone is 800 ℃, which accounts for 1/2 the length of the rotary kiln, and the burning time at this stage is 2.1 h; the temperature of the cooling zone is 350 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at the stage is 0.9 h; the mixture reacts in a rotary kiln for 4.3 hours, so that insoluble vanadium in the mixture generates soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 25.7kg, and the recovery rate of the vanadium is 95%.
Example 4
(1) Uniformly mixing the impurity-removed vanadium mud and the secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is
3.10 percent, the total content of vanadium element is 31kg, and the proportion M of vanadium mud and secondary slag in the mixtureMud/MSlagIs 1.42; the vanadium grade in the vanadium mud is 4.50 percent, and the 120-mesh sieve passing rate is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.10 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) the mixture is sent into a rotary kiln for roasting, and the oxygen content of the roasting atmosphere in the roasting process of the rotary kiln is
15 percent, the temperature of a preheating zone is 230 ℃, which accounts for 8/25 of the length of the rotary kiln, and the roasting time at the stage is 1.4 h; the temperature of the burning zone is 800 ℃, which accounts for 12/25 the length of the rotary kiln, and the burning time at this stage is 2.2 h; the temperature of the cooling zone is 360 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at this stage is 0.9 h; the mixture reacts in a rotary kiln for 4.5 hours, so that insoluble vanadium in the mixture generates soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 29.6kg, and the recovery rate of the vanadium is 95.5%.
Example 5
(1) Uniformly mixing the impurity-removed vanadium mud and the secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is
3.30 percent, the total content of vanadium element is 33 kg, and the proportion M of vanadium mud and secondary slag in the mixtureMud/MSlagIs 1.1; the vanadium grade in the vanadium mud is 4.30 percent, and the 120-mesh sieve passing rate is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.20 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) feeding the mixture into a rotary kiln for roasting, wherein in the rotary kiln roasting process, the oxygen content of the roasting atmosphere is 14.5%, the temperature of a preheating zone is 240 ℃, 7/25 which accounts for the length of the rotary kiln, and the roasting time at the stage is 1 h; the temperature of the burning zone is 810 ℃, which accounts for 13/25 the length of the rotary kiln, and the burning time at this stage is 2.1 h; the temperature of the cooling zone is 370 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at this stage is 0.8 h; the mixture reacts in a rotary kiln for 4 hours, so that insoluble vanadium in the mixture generates soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 31.7kg, and the recovery rate of the vanadium is 96%.
Example 6
(1) Uniformly mixing the impurity-removed vanadium mud and the secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is
3.50 percent, the total content of vanadium element is 35kg, and the proportion M of vanadium mud and secondary slag in the mixtureMud/MSlagIs 0.85; the vanadium grade in the vanadium mud is 3.80 percent, and the 120-mesh sieve passing rate is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.40 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) feeding the mixture into a rotary kiln for roasting, wherein in the rotary kiln roasting process, the oxygen content of the roasting atmosphere is 14.1%, the temperature of a preheating zone is 250 ℃, 8/25 which accounts for the length of the rotary kiln, and the roasting time at the stage is 1.6 h; the temperature of the burning zone is 830 ℃, which accounts for 12/25 the length of the rotary kiln, and the burning time at this stage is 2.5 h; the temperature of the cooling zone is 380 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at this stage is 0.9 h; the mixture is placed in a rotary kiln for 5 hours, so that insoluble vanadium in the mixture can generate soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 33.3kg, and the recovery rate of the vanadium is 95%.
Example 7
(1) Uniformly mixing the impurity-removed vanadium mud and secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is 2.50%, the total content of vanadium elements is 25kg, and the proportion M of the vanadium mud to the secondary slag in the mixtureMud/MSlagIs 1.29; the vanadium grade in the vanadium mud is 3.66 percent, and the passing rate of a 120-mesh sieve with the granularity is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.00 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) feeding the mixture into a rotary kiln for roasting, wherein in the rotary kiln roasting process, the oxygen content of the roasting atmosphere is 10%, the temperature of a preheating zone is 270 ℃, 1/3 which accounts for the length of the rotary kiln, and the roasting time at the stage is 1.7 h; the burning zone temperature is 825 ℃, which accounts for 7/15 the length of the rotary kiln, and the burning time at this stage is 1.9 h; the temperature of the cooling zone is 390 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at this stage is 0.8 h; the mixture reacts for 4 hours in a rotary kiln, so that insoluble vanadium in the mixture generates soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 26.2kg, and the recovery rate of the vanadium is 95.5%.
Example 8
(1) Uniformly mixing the impurity-removed vanadium mud and secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade of the mixture is 3.00 percent, the total content of vanadium elements is 30kg, and the proportion M of the vanadium mud to the secondary slag in the mixtureMud/MSlagIs 2; the vanadium grade in the vanadium mud is 4.05 percent, and the 120-mesh sieve passing rate is more than or equal to 70 percent; the grade of vanadium in the secondary slag is 1.03 percent, and the passing rate of a 120-mesh sieve is more than or equal to 80 percent;
(2) feeding the mixture into a rotary kiln for roasting, wherein in the rotary kiln roasting process, the oxygen content of the roasting atmosphere is 11%, the temperature of a preheating zone is 300 ℃, 1/4 which accounts for the length of the rotary kiln, and the roasting time at the stage is 1.2 h; the temperature of the burning zone is 830 ℃, which accounts for 11/20 the length of the rotary kiln, and the burning time at this stage is 2.8 h; the temperature of the cooling zone is 430 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at this stage is 1 h; the mixture reacts for 5 hours in a rotary kiln, so that insoluble vanadium in the mixture generates soluble vanadium;
(3) and washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue.
Through detection, the total content of vanadium in the soluble vanadium solution is 28.2kg, and the recovery rate of the vanadium is 94%.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.

Claims (3)

1. The method for recovering vanadium-containing substances in vanadium mud is characterized by comprising the following steps:
(1) uniformly mixing the vanadium mud and the secondary slag according to a proportion to obtain a mixture, wherein the vanadium grade in the mixture is 2.00-3.50%, and the proportion of the vanadium mud and the secondary slag in the mixture is determined by the following formula:
Mmud/MSlag=（VMixing of-VSlag）/（VMud- VMixing of）
Wherein M isMudIs the mass of vanadium mud, MSlagIs the secondary slag mass, VMixing ofIs the vanadium grade, V, of the mixtureSlagIs the vanadium grade of the secondary slag, VMudThe vanadium grade of the vanadium mud is obtained;
(2) the mixture is sent into a rotary kiln for roasting, the temperature of a preheating zone is 200-300 ℃ in the rotary kiln roasting process, the preheating zone accounts for 1/4-1/3 of the length of the rotary kiln, and the roasting time at the stage is 1-1.7 h; the temperature of the firing zone is 780-830 ℃, which accounts for 7/15-11/20 of the length of the rotary kiln, and the firing time at this stage is 1.9-2.8 h; the temperature of the cooling zone is 330-430 ℃, which accounts for 1/5 the length of the rotary kiln, and the roasting time at this stage is 0.8-1 h; the mixture reacts in a rotary kiln for 4-5 h;
(3) washing and extracting the roasted mixture with water, and filtering to obtain a soluble vanadium solution and filter residue;
the grade of vanadium in the vanadium mud obtained in the step (1) is 3.66-4.86%;
the recovery rate of vanadium element in the vanadium mud is more than or equal to 94 percent;
and (3) in the rotary kiln roasting step in the step (2), the oxygen content in the roasting atmosphere is 10-16%.
2. The method for recovering vanadium-containing substances in vanadium sludge according to claim 1, characterized in that the secondary slag in the step (1) is residue after roasting and washing primary slag in a vanadium oxide production process, and the grade of vanadium in the secondary slag is 1.00-1.50%.
3. The method for recovering vanadium-containing substances in vanadium sludge as claimed in claim 1, wherein the secondary slag particle size in step (1) is 120-mesh passing rate not less than 80%, and the vanadium sludge particle size is 120-mesh passing rate not less than 20%.
CN201911183501.7A 2019-11-27 2019-11-27 Method for recovering vanadium-containing substances in vanadium mud Active CN111118290B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911183501.7A CN111118290B (en) 2019-11-27 2019-11-27 Method for recovering vanadium-containing substances in vanadium mud

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911183501.7A CN111118290B (en) 2019-11-27 2019-11-27 Method for recovering vanadium-containing substances in vanadium mud

Publications (2)

Publication Number Publication Date
CN111118290A CN111118290A (en) 2020-05-08
CN111118290B true CN111118290B (en) 2022-01-25

Family

ID=70496820

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911183501.7A Active CN111118290B (en) 2019-11-27 2019-11-27 Method for recovering vanadium-containing substances in vanadium mud

Country Status (1)

Country Link
CN (1) CN111118290B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105331822A (en) * 2015-11-26 2016-02-17 河北钢铁股份有限公司承德分公司 Method for recycling vanadium in waste containing vanadium
CN106011493A (en) * 2016-07-21 2016-10-12 河北钢铁股份有限公司承德分公司 Roasting method of low-grade vanadium slags
CN109825723A (en) * 2019-03-07 2019-05-31 河钢股份有限公司承德分公司 A method of utilizing alkaline tailings depth vanadium extraction
CN110106344A (en) * 2019-06-24 2019-08-09 攀钢集团研究院有限公司 Vanadium slag carbonating leaches cleaning extraction vanadium method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194941B (en) * 1986-09-10 1990-04-04 Uralsky Inst Chernykh Metall Process for recovering vanadium values
RU2080401C1 (en) * 1995-07-20 1997-05-27 Акционерное общество открытого типа "Ванадий-Тулачермет" Method of extracting vanadium from converter slag

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105331822A (en) * 2015-11-26 2016-02-17 河北钢铁股份有限公司承德分公司 Method for recycling vanadium in waste containing vanadium
CN106011493A (en) * 2016-07-21 2016-10-12 河北钢铁股份有限公司承德分公司 Roasting method of low-grade vanadium slags
CN109825723A (en) * 2019-03-07 2019-05-31 河钢股份有限公司承德分公司 A method of utilizing alkaline tailings depth vanadium extraction
CN110106344A (en) * 2019-06-24 2019-08-09 攀钢集团研究院有限公司 Vanadium slag carbonating leaches cleaning extraction vanadium method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"一次尾渣与钒泥提钒尾渣混合焙烧提钒研究";周冰晶等;《云南化工》;20180731;第45卷(第7期);第48-49页 *
"钒化工冶金固废资源化清洁利用";李兰杰等;《过程工程学报》;20190630;第19卷;第99-108页 *

Also Published As

Publication number Publication date
CN111118290A (en) 2020-05-08

Similar Documents

Publication Publication Date Title
CN111041200B (en) Method for leaching vanadium, titanium and chromium from vanadium, titanium and chromium raw materials by organic acid through hydrothermal method
CN103025900B (en) A kind of method extracting metallic element from ferro-aluminum Ore, titanium iron ore and residue
CN111167830A (en) Comprehensive treatment and utilization process of secondary aluminum ash
CN110172538B (en) Efficient red mud resource utilization system and process
CN110482503A (en) A kind of method of Quadratic aluminum dust comprehensive utilization of resources
CN109439894A (en) A method of utilizing iron, aluminium in waste resource recycling red mud
CN112725629A (en) Preparation method for extracting nonferrous metal and reduced iron from steel slag
CN113308602A (en) Method for utilizing titanium tetrachloride dust collecting slag
CN112158874A (en) Blast furnace cloth bag ash resource utilization process method
CN114182103A (en) Method for resource utilization of aluminum ash and household garbage incineration fly ash through cooperative treatment
CN109439889B (en) Method for resource utilization of sodium vanadate
CN108892179B (en) Method for green treatment of titanium tetrachloride dust collecting slag
CN105218064B (en) It is a kind of using red mud As polluted soil as the non-burning brick of main material
CN111118290B (en) Method for recovering vanadium-containing substances in vanadium mud
CN111394569A (en) Roasting method for producing vanadium pentoxide
CN109402386B (en) Composite additive for promoting recovery of iron and aluminum in red mud and preparation and use methods thereof
CN109207736B (en) Method for producing ferrochromium alloy and aluminum oxide by using chromium-containing aluminum mud and red mud
CN115679096A (en) Process method for recycling carbon slag and red mud by cooperative treatment
CN115353146A (en) Treatment method of titanium tetrachloride dust collection slag
CN114558440B (en) High-efficiency zinc extraction coupling pulp flue gas desulfurization carbon fixation process by high-chlorine zinc gray ammonia-ammonium sulfate method
CN114480859B (en) Method for utilizing all components of red mud and iron ore sintering dust in cooperation
CN107200488B (en) Method for producing fluoroaluminate cement by using carbon waste of aluminum electrolytic cell in dry-process rotary kiln plant
CN115583655A (en) Method for fractional extraction, utilization and conversion of high-calcium and high-iron gasification furnace slag elements
CN114032396A (en) Method for treating aluminum ash by low-temperature harmless wet method
CN113005285B (en) Process for producing brown corundum by using red mud

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant