CN110813518A - Beneficiation method for complex ore containing magnetite - Google Patents
Beneficiation method for complex ore containing magnetite Download PDFInfo
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- CN110813518A CN110813518A CN201911097443.6A CN201911097443A CN110813518A CN 110813518 A CN110813518 A CN 110813518A CN 201911097443 A CN201911097443 A CN 201911097443A CN 110813518 A CN110813518 A CN 110813518A
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- feeding
- hydrocyclone
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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
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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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
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
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Abstract
The invention relates to a beneficiation method for complex ores containing magnetite, and belongs to the technical field of mixed ore beneficiation. The method comprises the steps of grinding raw ores in stages, grading the coarse ore and the fine ore, reselecting settled sand in the coarse ore and the fine ore to obtain concentrate and tailings, and carrying out magnetic separation, grinding and grading, elutriation and concentration on overflow in the coarse ore and the fine ore to obtain the concentrate and the tailings. According to the invention, the anion reverse flotation process flow is replaced by the weak magnetism, ore grinding, grading and elutriation and concentration process flow, so that the ore property can be better adapted, the capital investment cost and the construction floor area of the high-efficiency thickener before strong magnetism, the high-efficiency thickener before flotation and the high-efficiency thickener before filtration are reduced, the separation cost is reduced, the pollution of flotation reagents such as sodium hydroxide, starch, collecting agent, calcium oxide and sulfuric acid to the environment is avoided, and meanwhile, the magnetic separation process is simple to operate and convenient for workers to operate, so that good social benefit and economic benefit are realized.
Description
Technical Field
The invention relates to the technical field of mixed ore sorting, in particular to a complex ore beneficiation method containing magnetite.
Background
At present, the requirement of the country for environmental protection is higher and higher, and enterprises actively seek a more environmental-friendly production mode to reduce environmental pollution, the beneficiation process of the mixed ore containing a large amount of magnetite in the Anshan type hematite beneficiation adopts the processes of stage grinding, coarse and fine grading, gravity separation, strong magnetism and anion reverse flotation for beneficiation, the process improves the pertinence in the beneficiation process, and can obtain higher beneficiation indexes; however, various agents such as sodium hydroxide, starch, collecting agent, calcium oxide and the like are needed to be used in the flotation process, the effect of the agents on environmental pollution is very complex, and harm is directly generated, for example, the collecting agent has strong pungent smell and can directly generate harm to human bodies; although the agents such as sodium hydroxide, sulfuric acid and the like are nontoxic, the agents are corrosive and may enter the natural environment in a dissolved state to cause environmental pollution, in the actual production, along with the gradual deepening of the mining depth of a stope, the mined ores are gradually transited from surface oxidized ores to deep primary ores, the amount of the oxidized ores is gradually reduced, the amount of the primary ores is gradually increased, the ores are gradually transited to mixed ores containing a large amount of magnetite in hematite, because the ore grade and the ferrous content are both improved, the ore feeding amount in the original 'stage grinding, coarse and fine grading, gravity separation-strong magnetic-anion reverse flotation beneficiation process flow' is increased, the using amount of flotation reagents is increased, the operation cost is higher, the method has adverse effects on the maximization of the enterprise realization benefit, and various flotation reagents can cause pollution to the environment, thereby seriously damaging the production environment.
Disclosure of Invention
The invention provides a beneficiation method for complex ores containing magnetite, which aims to solve the problems of high beneficiation cost and environmental pollution existing at present.
The technical scheme adopted by the invention is as follows: comprises the following steps:
feeding ores stored in an ore grinding bin into a first ball mill through a belt conveyor;
(II) feeding ore discharged by the first ball mill into a first hydrocyclone for classification;
thirdly, returning settled sand classified by the first hydrocyclone to the first ball mill to form closed circuit grinding, and classifying the thickness of overflow classified by the first hydrocyclone through the second hydrocyclone;
fourthly, the settled sand graded by the second hydrocyclone is fed into a roughing spiral chute for roughing; the overflow of the second hydrocyclone is fed into a first weak magnetic separator;
(V) feeding the concentrate selected by the roughing spiral chute into a fine-concentration spiral chute, and feeding the tailings selected by the roughing spiral chute into a scavenging spiral chute;
feeding the tailings selected by the first low-intensity magnetic separator into a second thickener, concentrating to obtain final tailings, regrinding the concentrate selected by the first low-intensity magnetic separator through a third ball mill, feeding the concentrate into a first high-frequency vibrating screen for grading, and feeding the product below the screen of the first high-frequency vibrating screen into a fourth hydrocyclone;
feeding the concentrate selected by the scavenging spiral chute into a fine selection spiral chute, feeding the middlings selected by the scavenging spiral chute into a third hydrocyclone, and feeding the tailings selected by the scavenging spiral chute into a second low-intensity magnetic separator;
seventhly, returning middlings selected by the fine selection spiral chute to the fine selection spiral chute, feeding tailings selected by the fine selection spiral chute to a third hydrocyclone, and grading concentrates selected by the fine selection spiral chute through a second high-frequency vibrating screen;
(eighthly), feeding products on a screen of the second high-frequency vibrating screen into a third hydrocyclone, concentrating products under the screen of the second high-frequency vibrating screen by using a first thickener, feeding the concentrated products into a filtering workshop, and filtering the concentrated products by using a disc type vacuum filter to obtain final concentrate; feeding the concentrate selected by the second low-intensity magnetic separator into a third hydrocyclone, and feeding the tailings selected by the second low-intensity magnetic separator into a medium magnetic separator after deslagging;
(ninth), feeding the concentrate selected by the medium magnetic separator into a third hydrocyclone, feeding the tailings selected by the medium magnetic separator into a second thickener, and concentrating to obtain final tailings;
feeding settled sand of the fourth hydrocyclone into an elutriation machine, feeding concentrate of the elutriation machine and concentrated gravity concentrate into a disc type vacuum filter together for filtering, and filtering to obtain final concentrate;
(ten) feeding settled sand of the third hydrocyclone into the second ball mill, and merging the ore discharge of the second ball mill and the overflow of the third hydrocyclone into the second hydrocyclone;
feeding the overflow of the elutriation machine, the overflow of the fourth hydrocyclone and the oversize product of the first high-frequency vibrating screen into a concentration magnetic separator, feeding the concentrate of the concentration magnetic separator into a third ball mill for regrinding, feeding the tailings of the concentration magnetic separator into a second concentrator, and concentrating to obtain the final tailings.
The invention has the advantages that: the anion reverse flotation process flow is replaced by the weak magnetism, ore grinding, grading and elutriation and concentration process flow, so that the ore property can be better adapted, the capital investment cost and the construction floor area of the high-efficiency thickener before strong magnetism, the high-efficiency thickener before flotation and the high-efficiency thickener before filtration are reduced, the separation cost is reduced, the pollution of flotation agents such as sodium hydroxide, starch, collecting agents, calcium oxide, sulfuric acid and the like to the environment is avoided, and better social benefit and economic benefit are obtained.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to fig. 1 of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Comprises the following steps:
feeding ores stored in an ore grinding bin into a first ball mill through a belt conveyor;
(II) feeding ore discharged by the first ball mill into a first hydrocyclone for classification;
thirdly, returning settled sand classified by the first hydrocyclone to the first ball mill to form closed circuit grinding, and classifying the thickness of overflow classified by the first hydrocyclone through the second hydrocyclone;
fourthly, the settled sand graded by the second hydrocyclone is fed into a roughing spiral chute for roughing; the overflow of the second hydrocyclone is fed into a first weak magnetic separator;
(V) feeding the concentrate selected by the roughing spiral chute into a fine-concentration spiral chute, and feeding the tailings selected by the roughing spiral chute into a scavenging spiral chute;
feeding the tailings selected by the first low-intensity magnetic separator into a second thickener, concentrating to obtain final tailings, regrinding the concentrate selected by the first low-intensity magnetic separator through a third ball mill, feeding the concentrate into a first high-frequency vibrating screen for grading, and feeding the product below the screen of the first high-frequency vibrating screen into a fourth hydrocyclone;
feeding the concentrate selected by the scavenging spiral chute into a fine selection spiral chute, feeding the middlings selected by the scavenging spiral chute into a third hydrocyclone, and feeding the tailings selected by the scavenging spiral chute into a second low-intensity magnetic separator;
seventhly, returning middlings selected by the fine selection spiral chute to the fine selection spiral chute, feeding tailings selected by the fine selection spiral chute to a third hydrocyclone, and grading concentrates selected by the fine selection spiral chute through a second high-frequency vibrating screen;
(eighthly), feeding products on a screen of the second high-frequency vibrating screen into a third hydrocyclone, concentrating products under the screen of the second high-frequency vibrating screen by using a first thickener, feeding the concentrated products into a filtering workshop, and filtering the concentrated products by using a disc type vacuum filter to obtain final concentrate; feeding the concentrate selected by the second low-intensity magnetic separator into a third hydrocyclone, and feeding the tailings selected by the second low-intensity magnetic separator into a medium magnetic separator after deslagging;
(ninth), feeding the concentrate selected by the medium magnetic separator into a third hydrocyclone, feeding the tailings selected by the medium magnetic separator into a second thickener, and concentrating to obtain final tailings;
feeding settled sand of the fourth hydrocyclone into an elutriation machine, feeding concentrate of the elutriation machine and concentrated gravity concentrate into a disc type vacuum filter together for filtering, and filtering to obtain final concentrate;
(ten) feeding settled sand of the third hydrocyclone into the second ball mill, and merging the ore discharge of the second ball mill and the overflow of the third hydrocyclone into the second hydrocyclone;
feeding the overflow of the elutriation machine, the overflow of the fourth hydrocyclone and the oversize product of the first high-frequency vibrating screen into a concentration magnetic separator, feeding the concentrate of the concentration magnetic separator into a third ball mill for regrinding, feeding the tailings of the concentration magnetic separator into a second concentrator, and concentrating to obtain the final tailings.
According to the invention, the anion reverse flotation process flow is replaced by the weak magnetism, ore grinding, grading and elutriation and concentration process flow, so that the ore property can be better adapted, the capital investment cost and the construction floor area of the high-efficiency thickener before strong magnetism, the high-efficiency thickener before flotation and the high-efficiency thickener before filtration are reduced, the separation cost is reduced, the pollution of flotation reagents such as sodium hydroxide, starch, collecting agent, calcium oxide and sulfuric acid to the environment is avoided, and meanwhile, the magnetic separation process is simple to operate and convenient for workers to operate, so that good social benefit and economic benefit are realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A complex ore beneficiation method containing magnetite is characterized by comprising the following steps:
feeding ores stored in an ore grinding bin into a first ball mill through a belt conveyor;
(II) feeding ore discharged by the first ball mill into a first hydrocyclone for classification;
thirdly, returning settled sand classified by the first hydrocyclone to the first ball mill to form closed circuit grinding, and classifying the thickness of overflow classified by the first hydrocyclone through the second hydrocyclone;
fourthly, the settled sand graded by the second hydrocyclone is fed into a roughing spiral chute for roughing; the overflow of the second hydrocyclone is fed into a first weak magnetic separator;
(V) feeding the concentrate selected by the roughing spiral chute into a fine-concentration spiral chute, and feeding the tailings selected by the roughing spiral chute into a scavenging spiral chute;
feeding the tailings selected by the first low-intensity magnetic separator into a second thickener, concentrating to obtain final tailings, regrinding the concentrate selected by the first low-intensity magnetic separator through a third ball mill, feeding the concentrate into a first high-frequency vibrating screen for grading, and feeding the product below the screen of the first high-frequency vibrating screen into a fourth hydrocyclone;
feeding the concentrate selected by the scavenging spiral chute into a fine selection spiral chute, feeding the middlings selected by the scavenging spiral chute into a third hydrocyclone, and feeding the tailings selected by the scavenging spiral chute into a second low-intensity magnetic separator;
seventhly, returning middlings selected by the fine selection spiral chute to the fine selection spiral chute, feeding tailings selected by the fine selection spiral chute to a third hydrocyclone, and grading concentrates selected by the fine selection spiral chute through a second high-frequency vibrating screen;
(eighthly), feeding products on a screen of the second high-frequency vibrating screen into a third hydrocyclone, concentrating products under the screen of the second high-frequency vibrating screen by using a first thickener, feeding the concentrated products into a filtering workshop, and filtering the concentrated products by using a disc type vacuum filter to obtain final concentrate; feeding the concentrate selected by the second low-intensity magnetic separator into a third hydrocyclone, and feeding the tailings selected by the second low-intensity magnetic separator into a medium magnetic separator after deslagging;
(ninth), feeding the concentrate selected by the medium magnetic separator into a third hydrocyclone, feeding the tailings selected by the medium magnetic separator into a second thickener, and concentrating to obtain final tailings;
feeding settled sand of the fourth hydrocyclone into an elutriation machine, feeding concentrate of the elutriation machine and concentrated gravity concentrate into a disc type vacuum filter together for filtering, and filtering to obtain final concentrate;
(ten) feeding settled sand of the third hydrocyclone into the second ball mill, and merging the ore discharge of the second ball mill and the overflow of the third hydrocyclone into the second hydrocyclone;
feeding the overflow of the elutriation machine, the overflow of the fourth hydrocyclone and the oversize product of the first high-frequency vibrating screen into a concentration magnetic separator, feeding the concentrate of the concentration magnetic separator into a third ball mill for regrinding, feeding the tailings of the concentration magnetic separator into a second concentrator, and concentrating to obtain the final tailings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911097443.6A CN110813518A (en) | 2019-11-11 | 2019-11-11 | Beneficiation method for complex ore containing magnetite |
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| CN201911097443.6A CN110813518A (en) | 2019-11-11 | 2019-11-11 | Beneficiation method for complex ore containing magnetite |
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| CN201911097443.6A Withdrawn CN110813518A (en) | 2019-11-11 | 2019-11-11 | Beneficiation method for complex ore containing magnetite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716126A (en) * | 2022-03-29 | 2022-07-08 | 黄道驰 | Environment-friendly purification comprehensive utilization and mineral recovery process for sand making tailings |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580029A (en) * | 2018-08-01 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore beneficiation technique |
| CN108714482A (en) * | 2018-06-15 | 2018-10-30 | 王海霞 | Rhombohedral iron ore beneficiation technics |
| CN108816497A (en) * | 2018-06-15 | 2018-11-16 | 魏建民 | Magnetite beneficiation process |
| CN109046753A (en) * | 2018-08-31 | 2018-12-21 | 中冶北方（大连）工程技术有限公司 | A kind of high mud viscosity earth's surface is red, magnetic mixing iron ore beneficiation technique |
| CN109675712A (en) * | 2019-01-08 | 2019-04-26 | 中冶北方（大连）工程技术有限公司 | A kind of processing high-sulfur is red-ore-dressing technique of magnetic compound iron ore |
-
2019
- 2019-11-11 CN CN201911097443.6A patent/CN110813518A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714482A (en) * | 2018-06-15 | 2018-10-30 | 王海霞 | Rhombohedral iron ore beneficiation technics |
| CN108816497A (en) * | 2018-06-15 | 2018-11-16 | 魏建民 | Magnetite beneficiation process |
| CN108580029A (en) * | 2018-08-01 | 2018-09-28 | 中冶北方（大连）工程技术有限公司 | A kind of red magnetic mixing iron ore beneficiation technique |
| CN109046753A (en) * | 2018-08-31 | 2018-12-21 | 中冶北方（大连）工程技术有限公司 | A kind of high mud viscosity earth's surface is red, magnetic mixing iron ore beneficiation technique |
| CN109675712A (en) * | 2019-01-08 | 2019-04-26 | 中冶北方（大连）工程技术有限公司 | A kind of processing high-sulfur is red-ore-dressing technique of magnetic compound iron ore |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716126A (en) * | 2022-03-29 | 2022-07-08 | 黄道驰 | Environment-friendly purification comprehensive utilization and mineral recovery process for sand making tailings |
| CN114716126B (en) * | 2022-03-29 | 2023-09-29 | 黄道驰 | Environment-friendly purification comprehensive utilization and mineral recovery process for sand making tail mud |
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Application publication date: 20200221 |