CN111250259B - Titanium selection process of olivine-containing vanadium titano-magnetite - Google Patents
Titanium selection process of olivine-containing vanadium titano-magnetite Download PDFInfo
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- CN111250259B CN111250259B CN202010243602.5A CN202010243602A CN111250259B CN 111250259 B CN111250259 B CN 111250259B CN 202010243602 A CN202010243602 A CN 202010243602A CN 111250259 B CN111250259 B CN 111250259B
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000010936 titanium Substances 0.000 title claims abstract description 69
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 48
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 40
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052609 olivine Inorganic materials 0.000 title claims abstract description 35
- 239000010450 olivine Substances 0.000 title claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 182
- 239000012141 concentrate Substances 0.000 claims abstract description 108
- 229910052742 iron Inorganic materials 0.000 claims abstract description 91
- 238000000926 separation method Methods 0.000 claims abstract description 90
- 230000002000 scavenging effect Effects 0.000 claims abstract description 60
- 230000005484 gravity Effects 0.000 claims abstract description 47
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000005188 flotation Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000011593 sulfur Substances 0.000 claims abstract description 27
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 27
- 239000010419 fine particle Substances 0.000 claims abstract description 15
- 238000012216 screening Methods 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- VRRFSFYSLSPWQY-UHFFFAOYSA-N sulfanylidenecobalt Chemical compound [Co]=S VRRFSFYSLSPWQY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 17
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 10
- 239000011707 mineral Substances 0.000 abstract description 10
- 230000002452 interceptive effect Effects 0.000 abstract description 4
- 230000005389 magnetism Effects 0.000 description 11
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 10
- 229910052611 pyroxene Inorganic materials 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 238000007885 magnetic separation Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910001919 chlorite Inorganic materials 0.000 description 2
- 229910052619 chlorite group Inorganic materials 0.000 description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 2
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052642 spodumene Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a titanium selection process of olivine-containing vanadium titano-magnetite, which comprises the following steps: strongly magnetic tailing discarding of the first-stage iron ore tailings; removing iron from the concentrate by strong magnetic tailing discarding by weak magnetic; fine screening and grading the weak magnetic iron-removing tailings; coarse grain reselection of materials on the sieve; coarse grain gravity concentration concentrate sulfur floating; processing the sulfur-bearing concentrate into a sulfur-cobalt concentrate, drying the sulfur-bearing tailings, and then electrically separating to obtain electrically separated titanium concentrate; separating slag from the second-stage iron tailings and/or the third-stage iron tailings; removing iron from the slag-separated fine particles for one section; performing primary strong magnetic rough separation on the first-stage deironing tailings; first-stage strong magnetic roughing tailings and first-stage strong magnetic scavenging; fine grain reselection is carried out on the first section of strong magnetic scavenging concentrate and the first section of strong magnetic roughing concentrate together; fine grain gravity concentration concentrate secondary iron removal; returning the second-stage iron-removed concentrate to the iron separation process, and performing second-stage strong magnetic tailing discarding on the second-stage iron-removed tailings; and (4) feeding the two-stage strong magnetic tailing-discarding concentrate into a sulfur-floating titanium-floating system to finally obtain the flotation titanium concentrate. The titanium separation process can effectively remove interfering minerals, improve the grade of raw flotation ores, reduce the production cost of titanium separation and improve the recovery rate of titanium separation.
Description
Technical Field
The invention relates to the field of a titanium selection process for vanadium titano-magnetite, in particular to a titanium selection process for vanadium titano-magnetite containing olivine.
Background
The vanadium-titanium magnetite ore can be classified into six types of natural type, pyroxene type, olivine type, and pyroxene type. At present, the vanadium titano-magnetite beneficiation generally adopts a principle flow of 'first iron separation and then titanium separation', wherein the iron separation generally adopts a multi-stage grinding stage separation flow such as two-stage, three-stage or even four-stage, and the titanium separation of iron tailings generally adopts a 'two-stage strong magnetism + flotation' flow shown in fig. 1.
The titanium selection process of 'two-stage strong magnetism + flotation' in the prior art is more suitable for vanadium titano-magnetite of natural type, pyroxene type and pyroxene type, but is not suitable for vanadium titano-magnetite of olivine type, pyroxene type and pyroxene type. Mainly because the ilmenite in the three types of vanadium-titanium magnetite has fine and uneven embedded particle size, and the interference minerals such as olivine, chlorite, and spodumene with high content which are similar to the magnetism and the conductivity of the ilmenite, the interference minerals are difficult to remove in large quantity during the strong magnetic and electric separation, so that the flotation raw ore grade is low, the quality of the electrically separated titanium concentrate is poor, and the problems of high titanium separation production cost, low titanium separation recovery rate and the like are finally caused.
Therefore, how to effectively reduce the cost of titanium separation and improve the recovery rate of ilmenite is a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a titanium separation process of olivine-containing vanadium titano-magnetite, which is used for reducing the titanium separation cost and improving the recovery rate of ilmenite.
In order to achieve the purpose, the invention provides the following technical scheme:
a titanium selection process of olivine-containing vanadium titano-magnetite comprises the following steps:
carrying out strong magnetic tailing discarding on the first-stage iron ore tailings;
carrying out weak magnetic iron removal on the strong magnetic tailing discarding concentrate;
returning the weak magnetic iron removal concentrate to the iron separation process, and carrying out fine screening and grading on the weak magnetic iron removal tailings;
coarse grain gravity separation is carried out on the oversize material classified by the fine sieve;
carrying out sulfur flotation on the coarse grain gravity concentrate;
carrying out deep processing on the sulfur-bearing concentrate in a sulfur-cobalt production line to obtain a sulfur-cobalt concentrate, drying the sulfur-bearing tailings and then carrying out electric separation to obtain an electric separation titanium concentrate;
separating slag from the second-stage iron tailings and/or the third-stage iron tailings;
carrying out first-stage iron removal on the slag-separated fine particles;
returning the first-stage deironing concentrate to the iron separation process, and performing first-stage strong magnetic roughing on the first-stage deironing tailings;
carrying out primary strong magnetic scavenging on the primary strong magnetic roughing tailings;
carrying out fine grain reselection on the first section of strong magnetic scavenging concentrate and the first section of strong magnetic roughing concentrate together;
performing secondary iron removal on the fine-grained gravity concentrate;
returning the second-stage iron-removed concentrate to the iron separation process, and performing second-stage strong magnetic tailing discarding on the second-stage iron-removed tailings;
the second-stage strong magnetic tailing-discarding concentrate enters a sulfur-floating titanium-floating system to finally obtain a flotation titanium concentrate;
and merging the strong magnetic tailing discarding, the coarse grain gravity tailings, the electric tailings, the coarse slag separation, the first-stage strong magnetic scavenging tailings, the fine grain gravity tailings and the second-stage strong magnetic tailing discarding into the tailings.
Preferably, before the second-stage iron removal of the fine-grained gravity concentrate, the method further comprises the following steps:
grading the fine gravity concentrate, and repeatedly grinding and grading the coarse material of the fine gravity concentrate;
and performing secondary iron removal on the fine concentrate by gravity separation of the fine particles.
Preferably, the two-section strong magnetic tailing discarding comprises two-section strong magnetic rough separation and two-section strong magnetic scavenging;
performing second-stage strong magnetic rough separation on the second-stage deironing tailings; carrying out second-stage strong magnetic scavenging on the second-stage strong magnetic roughing tailings; the second-stage strong magnetic roughing concentrate and the second-stage strong magnetic scavenging concentrate enter a sulfur-floating titanium-floating system together; and collecting the two-stage strong magnetic scavenging tailings into tailings for treatment.
Preferably, before the second-stage strong magnetic rough concentration enters the sulfur and titanium floating system, the method further comprises the following steps:
carrying out second-stage strong magnetic concentration on the second-stage strong magnetic rough concentration ore; carrying out second-stage strong magnetic scavenging on the second-stage strong magnetic roughing tailings and the second-stage strong magnetic fine tailings; and (4) feeding the two-stage strong magnetic concentration concentrate into a sulfur and titanium floating system.
Preferably, the method further comprises the following steps: and carrying out the primary strong magnetic roughing process on the undersize materials classified by the fine sieve and the primary deironing tailings together.
Preferably, the method further comprises the following steps:
and grinding and grading the coarse gravity middlings and the electric separation middlings, repeatedly grinding and grading the graded coarse materials, and feeding the finally obtained graded fine materials and the slag-separating fine particles into the first stage of iron removal process.
Preferably, the strong magnetic tailing discarding comprises strong magnetic roughing and strong magnetic scavenging;
performing strong magnetic roughing on the first-stage iron tailings; carrying out strong magnetic scavenging on the strong magnetic roughing tailings; the strong magnetic roughing concentrate and the strong magnetic scavenging concentrate are jointly subjected to the weak magnetic iron removal process; and (4) merging the strong magnetic scavenging tailings into tailings for treatment.
Preferably, the strong magnetic tailing discarding comprises inner-cylinder type permanent magnetic strong magnetic rough separation and vertical ring pulsating high-gradient strong magnetic scavenging.
Preferably, the strong magnetic rough separation magnetic field intensity is 5000-10000 oersted, and the strong magnetic sweeping magnetic field intensity is 3000-8000 oersted; the size of a fine screening and grading sieve pore is 0.045-0.25 mm; the grinding classification fineness of the two middlings is preferably 60 to 100 percent of-0.074 mm; the magnetic field intensity of the first-section strong magnetic roughing is 5000-10000 oersted, and the magnetic field intensity of the first-section strong magnetic scavenging is 3000-8000 oersted; the magnetic field intensity of the two-stage strong magnetic rough concentration is 5000-10000 oersted, the magnetic field intensity of the two-stage strong magnetic scavenging is 3000-8000 oersted, and the magnetic field intensity of the two-stage strong magnetic fine concentration is 4000-9000 oersted.
The invention provides a titanium selection process of olivine-containing vanadium titano-magnetite, which comprises the following steps: carrying out strong magnetic tailing discarding on the first-stage iron ore tailings; carrying out weak magnetic iron removal on the strong magnetic tailing discarding concentrate; returning the weak magnetic iron removal concentrate to the iron separation process, and carrying out fine screening and grading on the weak magnetic iron removal tailings; coarse grain gravity separation is carried out on the oversize material classified by the fine sieve; carrying out sulfur flotation on the coarse grain gravity concentrate; carrying out deep processing on the sulfur-bearing concentrate in a sulfur-cobalt production line to obtain a sulfur-cobalt concentrate, drying the sulfur-bearing tailings and then carrying out electric separation to obtain an electric separation titanium concentrate; separating slag from the second-stage iron tailings and/or the third-stage iron tailings; carrying out first-stage iron removal on the slag-separated fine particles; returning the first-stage deironing concentrate to the iron separation process, and performing first-stage strong magnetic roughing on the first-stage deironing tailings; carrying out primary strong magnetic scavenging on the primary strong magnetic roughing tailings; carrying out fine grain reselection on the first section of strong magnetic scavenging concentrate and the first section of strong magnetic roughing concentrate together; performing secondary iron removal on the fine-grained gravity concentrate; returning the second-stage iron-removed concentrate to the iron separation process, and performing second-stage strong magnetic tailing discarding on the second-stage iron-removed tailings; the second-stage strong magnetic tailing-discarding concentrate enters a sulfur-floating titanium-floating system to finally obtain a flotation titanium concentrate; according to the process for separating the titanium from the olivine-containing vanadium titano-magnetite, provided by the invention, the strong magnetic discarding tailings, the coarse grain gravity tailings, the electric separation tailings, the slag separation coarse grains, the first-stage strong magnetic scavenging tailings, the fine grain gravity tailings and the second-stage strong magnetic discarding tailings are merged into the tailings, the first-stage iron tailings are subjected to strong magnetic discarding, and the weak magnetic iron-removed tailings are subjected to fine screening and grading, so that the interfering minerals can be effectively removed, the grade of the raw flotation ore is improved, the production cost of titanium separation is finally reduced, and the recovery rate of titanium separation is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a process for selecting titanium from olivine-containing vanadium titano-magnetite according to the present invention;
FIG. 2 is a flow chart of a specific embodiment of the process for selecting titanium from olivine-containing vanadium titano-magnetite according to the present invention.
Detailed Description
The core of the invention is to provide a titanium separation process of olivine-containing vanadium titano-magnetite, which is used for reducing the titanium separation cost and improving the recovery rate of ilmenite.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, fig. 1 is a flow chart illustrating a process for selecting titanium from olivine-containing vanadium titano-magnetite according to the present invention; FIG. 2 is a flow chart of a specific embodiment of the process for selecting titanium from olivine-containing vanadium titano-magnetite according to the present invention.
In this embodiment, the process for selecting titanium from the olivine-containing vanadium titano-magnetite comprises the following steps:
step S1: carrying out strong magnetic tailing discarding on the first-stage iron ore tailings;
step S2: carrying out weak magnetic iron removal on the strong magnetic tailing discarding concentrate;
step S3: returning the weak magnetic iron removal concentrate to the iron separation process, and carrying out fine screening and grading on the weak magnetic iron removal tailings;
step S4: coarse grain gravity separation is carried out on the oversize material classified by the fine sieve;
step S5: carrying out sulfur flotation on the coarse grain gravity concentrate;
step S6: feeding the sulfur flotation concentrate into a sulfur and cobalt production line, drying the sulfur flotation tailings, and then electrically separating to obtain electrically separated titanium concentrate;
step S7: separating slag from the second-stage iron tailings and/or the third-stage iron tailings;
step S8: carrying out first-stage iron removal on the slag-separated fine particles;
step S9: returning the first-stage deironing concentrate to the iron separation process, and performing first-stage strong magnetic roughing on the first-stage deironing tailings;
step S10: carrying out primary strong magnetic scavenging on the primary strong magnetic roughing tailings;
step S11: carrying out fine grain reselection on the first section of strong magnetic scavenging concentrate and the first section of strong magnetic roughing concentrate together;
step S12: performing secondary iron removal on the fine-grained gravity concentrate;
step S13: returning the second-stage iron-removed concentrate to the iron separation process, and performing second-stage strong magnetic tailing discarding on the second-stage iron-removed tailings;
step S14: the second-stage strong magnetic tailing-discarding concentrate enters a sulfur-floating titanium-floating system to finally obtain a flotation titanium concentrate;
step S15: and merging the strong magnetic tailing discarding, the coarse grain gravity tailings, the electric tailings, the coarse slag separation, the first-stage strong magnetic scavenging tailings, the fine grain gravity tailings and the second-stage strong magnetic tailing discarding into the tailings.
The titanium selection process of the olivine-containing vanadium titano-magnetite is preferably applied to the olivine-containing vanadium titano-magnetite, and the process is adopted to carry out efficient ilmenite recovery on the olivine-containing vanadium titano-magnetite so as to obtain TiO2The electro-flotation titanium concentrate with relatively coarse granularity and the flotation titanium concentrate with relatively fine granularity are about 47 percent in grade. By adopting the process to carry out titanium separation on the olivine-containing vanadium titano-magnetite, the titanium separation cost can be reduced, the recovery rate of ilmenite is improved, and the electrically separated titanium concentrate with the granularity more suitable for producing sulfuric acid method titanium dioxide and acid-soluble high titanium slag is obtained, so that the economic and social benefits are obvious, and the purpose of efficiently recovering ilmenite in the olivine-containing vanadium titano-magnetite is achieved.
On the basis of the above embodiments, before performing secondary iron removal on the fine gravity concentrate, the method further includes:
grading the fine grain gravity concentration, and repeatedly grinding and grading the coarse fine grain gravity concentration;
and performing secondary iron removal on the fine concentrate by gravity separation of the fine particles.
On the basis of the above embodiments, the two-stage strong magnetic tailing removal comprises two-stage strong magnetic roughing and two-stage strong magnetic scavenging;
performing second-stage strong magnetic rough separation on the second-stage deironing tailings; carrying out second-stage strong magnetic scavenging on the second-stage strong magnetic roughing tailings; the second-stage strong magnetic roughing concentrate and the second-stage strong magnetic scavenging concentrate enter a sulfur-floating titanium-floating system together; and collecting the two-stage strong magnetic scavenging tailings into tailings for treatment.
On the basis of each embodiment, before the second-stage strong magnetic rough concentration enters the sulfur and titanium floating system, the method further comprises the following steps:
carrying out second-stage strong magnetic concentration on the second-stage strong magnetic rough concentration ore; carrying out second-stage strong magnetic scavenging on the second-stage strong magnetic roughing tailings and the second-stage strong magnetic fine tailings; and (4) feeding the two-stage strong magnetic concentration concentrate into a sulfur and titanium floating system.
In addition to the above embodiments, the present invention further includes: and (3) carrying out a primary strong magnetic roughing process on the undersize materials classified by the fine sieve and the primary deironing tailings.
In addition to the above embodiments, the present invention further includes:
and grinding and grading the coarse gravity middlings and the electric separation middlings, repeatedly grinding and grading the graded coarse materials, and performing a first-stage iron removal process on the finally obtained graded fine materials and the slag-separating fine particles.
On the basis of the above embodiments, the strong magnetic tailing removal comprises strong magnetic roughing and strong magnetic scavenging;
performing strong magnetic roughing on the first-stage iron tailings; carrying out strong magnetic scavenging on the strong magnetic roughing tailings; performing a weak magnetic iron removal process on the strong magnetic roughing concentrate and the strong magnetic scavenging concentrate together; and (4) merging the strong magnetic scavenging tailings into tailings for treatment.
On the basis of the above embodiments, the strong magnetic tailing discarding comprises inner-cylinder type permanent magnetic strong magnetic rough separation and vertical-ring pulsating high-gradient strong magnetic scavenging.
Compared with the existing titanium separation process of the vanadium titano-magnetite, the process has the advantages that the first-stage iron separation tailings are directly subjected to combined strong magnetic tailing discarding, tailings discarded are subjected to weak magnetic iron removal and then are classified by a fine sieve, materials on the sieve classified by the fine sieve are subjected to coarse grain reselection to effectively remove interfering minerals, reselected concentrates are subjected to electric separation after desulfurization and drying to obtain electrically separated titanium concentrates with relatively coarse granularity, the production cost is reduced, and the social benefit is obvious; undersize materials subjected to fine screening and classification and fine materials obtained by mixing, grinding and classifying gravity middlings and electric separation middlings enter a fine titanium separation process, so that the recovery rate of ilmenite is improved; the fine particle titanium separation process sets fine particle gravity separation and combined two-stage strong magnetism, so that interference minerals are effectively removed, the grade and recovery rate of the two-stage strong magnetic concentrate are improved, and conditions are created for reducing the dosage of a medicament and improving the recovery rate of flotation in the next step of flotation.
In one specific embodiment, the titanium selection process of the olivine-containing vanadium titano-magnetite comprises the following steps:
carrying out strong magnetic tailing discarding on a first-stage iron tailings of the vanadium titano-magnetite, wherein the strong magnetic tailing discarding comprises inner-cylinder permanent magnetic strong magnetic roughing and vertical-ring pulsating high-gradient strong magnetic scavenging (the strong magnetic scavenging is set to further recover fine-grade minerals in the strong magnetic roughing tailings, so that the strong magnetic separation recovery rate is improved); performing weak magnetic iron removal on the strong magnetic concentrate in the first section, returning the weak magnetic iron removal concentrate to the iron separation process, and performing fine screening and grading on the weak magnetic iron removal tailings; carrying out coarse grain gravity separation on the oversize material after fine screening and classification; carrying out sulfur flotation on the coarse-grained gravity concentrate, and carrying out deep processing on the sulfur-bearing concentrate into sulfur-bearing cobalt concentrate in a sulfur-bearing cobalt production line; and drying the sulfur flotation tailings and then carrying out electric separation to obtain the electric separation titanium concentrate. Separating slag from the second-stage iron tailings of the vanadium titano-magnetite or the mixture of the second-stage iron tailings and the third-stage iron tailings, mixing the separated slag fine fraction with fine-grained materials obtained by mixing, grinding and grading the first-stage iron tailings of the vanadium titano-magnetite for reselecting middlings and electrically selecting middlings, and performing first-stage iron removal, wherein the first-stage iron removal concentrate returns to the iron selection process; mixing the first-stage deironing tailings and materials below a first-stage iron separation tailings fine screening and grading sieve of the vanadium titano-magnetite, and then carrying out first-stage strong magnetism, wherein the first-stage strong magnetism comprises first-stage strong magnetism rough separation and first-stage strong magnetism scavenging (the first-stage strong magnetism scavenging is set to further recover fine-grained minerals in the first-stage strong magnetism rough separation tailings, so that the recovery rate of the first-stage strong magnetism separation is improved); the first-stage strong magnetic concentrate enters a fine grain gravity concentration system, the fine grain gravity concentrate is subjected to secondary iron removal after being subjected to grading grinding, the second-stage iron-removed concentrate returns to the iron separation process, the second-stage iron-removed tailings are subjected to secondary strong magnetic separation, the secondary strong magnetic separation comprises secondary strong magnetic rough separation, secondary strong magnetic scavenging and even secondary strong magnetic fine separation, and the secondary strong magnetic concentrate enters a sulfur-flotation titanium-flotation system to finally obtain flotation titanium concentrate.
Preferably, in order to achieve the best treatment effect of the process, the specific parameters of the main operation are as follows: the strong magnetic roughing is preferably carried out at the magnetic field intensity of 5000-10000 oersted, and the strong magnetic scavenging is preferably carried out at the magnetic field intensity of 3000-8000 oersted; the size of a fine screening and grading sieve pore is 0.045-0.25 mm; the grinding classification fineness of the two middlings is preferably 60 to 100 percent of-0.074 mm; the optimal magnetic field intensity of the first-stage strong magnetic roughing is 5000-10000 oersted, and the optimal magnetic field intensity of the first-stage strong magnetic scavenging is 3000-8000 oersted; the magnetic field intensity of the two-stage strong magnetic roughing is preferably 5000-10000 oersted, the magnetic field intensity of the two-stage strong magnetic scavenging is preferably 3000-8000 oersted, and the magnetic field intensity of the two-stage strong magnetic cleaning is preferably 4000-9000 oersted.
Compared with the prior art, the titanium separation process of the olivine-containing vanadium titano-magnetite provided by the embodiment has the following improvement points and beneficial effects as shown by a dotted line box in fig. 2:
1. one section of iron ore tailings is directly treated by combined strong magnetic discarding of inner-cylinder type permanent magnetic strong magnetic roughing and vertical ring pulsating high-gradient strong magnetic scavenging, so that the advantage combination that the material to be selected by the inner-cylinder type permanent magnetic strong magnetic equipment does not need to be separated from the coarse material and removed from the iron and the advantage that the recovery rate of fine-grained material is high by the vertical ring pulsating high-gradient strong magnetic equipment is realized;
2. a fine screening and grading operation is arranged between the weak magnetic iron removal and the coarse grain gravity separation of the first section of iron ore tailings, so that the granularity and uniformity of materials in subsequent operation are ensured, particularly, the coarse grain gravity separation and the electric separation operation are ensured to have better sorting effect, and the grade of the tailings is controlled to be lower;
3. the coarse-grained gravity middlings and the electric separation middlings are mixed, further ground and graded, and enter a fine-grained titanium separation process, so that the monomer dissociation degree of the two middlings is increased, and the recovery rate of ilmenite is improved;
4. fine particle reselection is arranged, so that interfering minerals such as olivine, chlorite, titanophite and the like which affect titanium separation can be effectively removed, and the fine particle reselection can select re-selection equipment such as a grooved spiral concentrator, a centrifugal concentrator, a slime cradle and a suspended vibration conical surface concentrator according to the granularity and the specific gravity of the minerals, can be a multi-section operation combination of rough selection, scavenging and fine selection of single re-selection equipment, and also can be a multi-section operation combination of rough selection, scavenging and fine selection of two or more kinds of re-selection equipment;
5. the two-stage strong magnetic is provided with the combination of two-stage strong magnetic rough separation, two-stage strong magnetic scavenging and even two-stage strong magnetic fine separation, so that the grade and the recovery rate of the two-stage strong magnetic concentrate can be improved according to the material properties and the production requirements, and conditions are created for reducing the dosage of a medicament and improving the recovery rate of the flotation in the next step.
The titanium selection process of the olivine-containing vanadium titano-magnetite provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are merely provided to assist in understanding the process and its core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A titanium selection process of olivine-containing vanadium titano-magnetite is characterized by comprising the following steps:
carrying out strong magnetic tailing discarding on the first-stage iron ore tailings;
carrying out weak magnetic iron removal on the strong magnetic tailing discarding concentrate;
returning the weak magnetic iron removal concentrate to the iron separation process, and carrying out fine screening and grading on the weak magnetic iron removal tailings;
coarse grain gravity separation is carried out on the oversize material classified by the fine sieve;
carrying out sulfur flotation on the coarse grain gravity concentrate;
carrying out deep processing on the sulfur-bearing concentrate in a sulfur-cobalt production line to obtain a sulfur-cobalt concentrate, drying the sulfur-bearing tailings and then carrying out electric separation to obtain an electric separation titanium concentrate;
separating slag from the second-stage iron tailings and/or the third-stage iron tailings;
carrying out first-stage iron removal on the slag-separated fine particles;
returning the first-stage deironing concentrate to the iron separation process, and performing first-stage strong magnetic roughing on the first-stage deironing tailings;
carrying out primary strong magnetic scavenging on the primary strong magnetic roughing tailings;
carrying out fine grain reselection on the first section of strong magnetic scavenging concentrate and the first section of strong magnetic roughing concentrate together;
performing secondary iron removal on the fine-grained gravity concentrate;
returning the second-stage iron-removed concentrate to the iron separation process, and performing second-stage strong magnetic tailing discarding on the second-stage iron-removed tailings;
the second-stage strong magnetic tailing-discarding concentrate enters a sulfur-floating titanium-floating system to finally obtain a flotation titanium concentrate;
and merging the strong magnetic tailing discarding, the coarse grain gravity tailings, the electric tailings, the coarse slag separation, the first-stage strong magnetic scavenging tailings, the fine grain gravity tailings and the second-stage strong magnetic tailing discarding into the tailings.
2. The process of titanizing the olivine-containing vanadium titano-magnetite according to claim 1, wherein prior to the secondary iron removal of the fine gravity concentrate, it further comprises:
grading the fine gravity concentrate, and repeatedly grinding and grading the coarse material of the fine gravity concentrate;
and performing secondary iron removal on the fine concentrate by gravity separation of the fine particles.
3. The process for selecting titanium from the olivine-containing vanadium titano-magnetite according to claim 1, wherein the secondary strong magnetic tailing comprises secondary strong magnetic roughing and secondary strong magnetic scavenging;
performing second-stage strong magnetic rough separation on the second-stage deironing tailings; carrying out second-stage strong magnetic scavenging on the second-stage strong magnetic roughing tailings; the second-stage strong magnetic roughing concentrate and the second-stage strong magnetic scavenging concentrate enter a sulfur-floating titanium-floating system together; and collecting the two-stage strong magnetic scavenging tailings into tailings for treatment.
4. The process for separating titanium from olivine-containing vanadium titano-magnetite according to claim 3, characterized in that before the second stage of strong magnetic rougher concentrate enters the sulfur and titanium flotation system, it further comprises:
carrying out second-stage strong magnetic concentration on the second-stage strong magnetic rough concentration ore; carrying out second-stage strong magnetic scavenging on the second-stage strong magnetic roughing tailings and the second-stage strong magnetic fine tailings; and (4) feeding the two-stage strong magnetic concentration concentrate into a sulfur and titanium floating system.
5. The process of titanizing the olivine-containing vanadium titano-magnetite according to any one of claims 1 to 4, characterized by further comprising: and carrying out the primary strong magnetic roughing process on the undersize materials classified by the fine sieve and the primary deironing tailings together.
6. The process of titanizing the olivine-containing vanadium titano-magnetite according to any one of claims 1 to 4, characterized by further comprising:
and grinding and grading the coarse gravity middlings and the electric separation middlings, repeatedly grinding and grading the graded coarse materials, and feeding the finally obtained graded fine materials and the slag-separating fine particles into the first stage of iron removal process.
7. The process for the separation of titanium from olivine-containing vanadium titano-magnetite according to any one of claims 1 to 4, characterized in that the strong magnetic tailing comprises strong magnetic roughing and strong magnetic scavenging;
performing strong magnetic roughing on the first-stage iron tailings; carrying out strong magnetic scavenging on the strong magnetic roughing tailings; the strong magnetic roughing concentrate and the strong magnetic scavenging concentrate are jointly subjected to the weak magnetic iron removal process; and (4) merging the strong magnetic scavenging tailings into tailings for treatment.
8. The process of selecting titanium from olivine-containing vanadium titano-magnetite according to claim 7, characterized in that the strong magnetic tailing comprises inner cylinder type permanent magnetic strong magnetic roughing and vertical ring pulsating high gradient strong magnetic scavenging.
9. The process for separating titanium from olivine-containing vanadium titano-magnetite according to claim 7, wherein the strong magnetic roughing magnetic field strength is 5000-10000 oersted, the strong magnetic sweeping magnetic field strength is 3000-8000 oersted; the size of a fine screening and grading sieve pore is 0.045-0.25 mm; the grinding classification fineness of the two middlings is preferably 60 to 100 percent of-0.074 mm; the magnetic field intensity of the first-section strong magnetic roughing is 5000-10000 oersted, and the magnetic field intensity of the first-section strong magnetic scavenging is 3000-8000 oersted; the magnetic field intensity of the two-stage strong magnetic rough concentration is 5000-10000 oersted, the magnetic field intensity of the two-stage strong magnetic scavenging is 3000-8000 oersted, and the magnetic field intensity of the two-stage strong magnetic fine concentration is 4000-9000 oersted.
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| CN112156889B (en) * | 2020-09-23 | 2022-05-24 | 攀钢集团矿业有限公司 | Beneficiation method for pyroxene type ilmenite |
| CN112474057B (en) * | 2020-11-09 | 2022-08-05 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for desulfurizing sulfur-containing vanadium-titanium-iron ore concentrate and recovering sulfur-cobalt ore concentrate |
| CN113908976A (en) * | 2021-10-12 | 2022-01-11 | 攀钢集团矿业有限公司 | Iron and titanium selecting method for vanadium-titanium magnetite ore waste |
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| CN114505172B (en) * | 2022-01-12 | 2024-03-22 | 长沙矿冶研究院有限责任公司 | Technological method for recycling ilmenite from seashore placer |
| CN115155798B (en) * | 2022-08-02 | 2023-11-17 | 承德宝通矿业有限公司 | Comprehensive recycling process of ultra-lean vanadium titano-magnetite iron tailings |
| CN115921128A (en) * | 2023-01-05 | 2023-04-07 | 鞍钢集团矿业有限公司 | Ore grinding-weak magnetic strong magnetic-coarse grain gravity separation regrinding and fine grain reverse flotation process |
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