CN114887758A - Magnetic iron ore stage grinding and selecting process with sand setting and tailing throwing functions - Google Patents
Magnetic iron ore stage grinding and selecting process with sand setting and tailing throwing functions Download PDFInfo
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- CN114887758A CN114887758A CN202210443484.1A CN202210443484A CN114887758A CN 114887758 A CN114887758 A CN 114887758A CN 202210443484 A CN202210443484 A CN 202210443484A CN 114887758 A CN114887758 A CN 114887758A
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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
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
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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
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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Abstract
The invention relates to a magnetite ore stage grinding and selecting process with sand setting and tailing discarding, which is characterized in that magnetite ore with the grade of 37-32% and the granularity of-12 mm is fed into a stage grinding stage magnetic selection process, the process is characterized in that first-stage grading sand setting is fed into a first-stage magnetic selector for sorting, tailings are discarded, concentrate returns to a first-stage ball mill to form first-stage semi-closed grinding and grading operation, first-stage grading overflow magnetic selection and tailing discarding are carried out, and concentrate is fed into a second-stage stirring mill; the two-stage grading settled sand is fed into a three-stage magnetic separator for sorting, tailings are thrown, concentrate returns to a two-stage stirring mill to form two-stage semi-closed circuit grinding grading operation, and the two-stage grading overflow product is subjected to three-stage continuous magnetic sorting to obtain the final concentrate with the grade of 65-70% and the recovery rate of 85-90%, and the method has the advantages that: 1) the yield of the first-stage graded sand setting tailings is abandoned by more than 5 percent, and the treatment capacity of a first-stage grinding machine is improved; 2) the yield of the two-stage grading sand setting tailings is abandoned by more than 10 percent, and the treatment capacity of a two-stage grinding machine is improved.
Description
Technical Field
The invention belongs to the technical field of mineral processing, and particularly relates to a magnetite stage grinding and selecting process with sand setting and tailing throwing functions.
Background
The grinding is the most important link in the mineral processing technology, and the function of the grinding is to provide proper feeding granularity for subsequent sorting operation and to judge whether the grinding product is qualified or whether the useful minerals are fully dissociated by monomers. At present, the grinding operation in the magnetite grinding and sorting process mainly adopts closed circuit grinding grading operation, and in the closed circuit grinding grading operation, all the graded sand setting products are returned to the ball mill for regrinding. Actual production data shows that a lot of gangue minerals dissociated by monomers exist in the graded sand setting product, so that an obvious problem exists in magnetite closed circuit grinding grading operation, namely, the gangue dissociated by monomers in the graded sand setting product is completely returned to a grinding machine for regrinding, on one hand, the increase of the circulating load of the ball mill is caused, the processing capacity of the grinding machine is reduced, on the other hand, the grinding efficiency is influenced, unnecessary energy consumption is increased, and the principle that tailings can be thrown and thrown early is not met. Therefore, if the gangue minerals dissociated from the monomers in the closed-circuit magnetite grinding classification operation can be removed in advance through separation and are not returned to the mill for regrinding, the circulating load of the ball mill can be effectively reduced, the new ore feeding treatment capacity of the ore grinding system is increased, energy is saved, consumption is reduced, and the purposes of yield improvement and efficiency improvement of enterprises are finally achieved.
Disclosure of Invention
The invention aims to provide a magnetite stage grinding and selecting process with sand setting and tailing discarding functions, so that coarse grain tailing discarding can be realized in time, energy is saved, consumption is reduced, the cyclic load of a grinding machine is reduced, and the treatment capacity and the grinding efficiency of the grinding machine are improved.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a magnetite ore stage grinding and selecting process with sand setting and tailing throwing functions, which comprises the following steps of:
step 1, feeding raw ores with the grade of 27% -32% and the granularity of-12 mm into a first-stage ball mill for grinding, and feeding discharged ores of the first-stage ball mill into a first-stage cyclone for classification to obtain a first-stage classification overflow product with the content of-200 meshes of 50% -65% and a first-stage classification sand setting product with the content of-200 meshes of 30% -45%, and the process is characterized by further comprising the following steps of:
step 2, feeding the first-stage graded sand setting product into a first-stage magnetic separator for sorting, discarding tailings of the first-stage magnetic separator, and returning concentrate of the first-stage magnetic separator to the first-stage ball mill to form semi-closed-circuit ore grinding of first-stage ore grinding grading operation;
step 3, feeding the first-stage graded overflow product into a second-stage magnetic separator for sorting, discarding tailings of the second-stage magnetic separator, and taking concentrate of the second-stage magnetic separator as ore feeding for second-stage ore grinding and grading operation;
step 4, feeding the concentrate of the second-stage magnetic separator into a second-stage stirring mill for grinding, and feeding the ore discharged from the second-stage stirring mill into a second-stage cyclone for grading to obtain a second-stage graded overflow product with-200 meshes of 80-95% and a second-stage graded settled sand product with-200 meshes of 45-65%;
step 5, feeding the two-stage graded sand setting product into a three-stage magnetic separator for separation, discarding tailings of the three-stage magnetic separator, and returning concentrate of the three-stage magnetic separator to the two-stage stirring mill to form semi-closed-circuit ore grinding of two-stage ore grinding grading operation;
and 6, feeding the two-stage graded overflow product into a four-stage magnetic separator for separation, feeding concentrate of the four-stage magnetic separator into a five-stage magnetic separator for separation, feeding concentrate of the five-stage magnetic separator into a six-stage magnetic separator for separation, wherein the concentrate of the six-stage magnetic separator is final concentrate, the grade of the final concentrate is 65-70%, the recovery rate is 85-90%, and the yield is 30-40%.
And 7, combining the first-section magnetic separator tailings, the second-section magnetic separator tailings, the third-section magnetic separator tailings, the fourth-section magnetic separator tailings, the fifth-section magnetic separator tailings and the sixth-section magnetic separator tailings into final tailings, wherein the grade of the final tailings is 7-11%, the recovery rate is 10-15%, and the yield is 60-70%.
Further, the magnetite raw ore contains chemical elements and the mass fractions of the elements are as follows: TFe 25% -32%, SiO 2 28%~32%，Al 2 O 3 0.6-1.0% of CaO, 4-6% of CaO, 0.7-1.0% of MgO, 0.05-0.08% of S, 0.01-0.04% of P, and the balance of oxygen and other impurity components.
Further, the stirring mill adopts ceramic balls as ore grinding media, the ore grinding mode is wet grinding, and the ratio of the material balls to the material balls is 0.5-0.9: 1, the medium filling rate is 60-90%, the edge linear velocity of the stirrer is 3-6 m/s, and the ore grinding concentration is 50-80%.
Furthermore, the first-stage magnetic separation equipment adopts a cylindrical magnetic separator, and the magnetic field intensity is 800 Oe-1500 Oe. The two-section magnetic separation equipment adopts a cylindrical magnetic separator, and the magnetic field intensity is 1500 Oe-2500 Oe. The three-section magnetic separation magnetic field intensity is 1500 Oe-2500 Oe, the four-section magnetic separation magnetic field intensity is 2000 Oe-2800 Oe, the five-section magnetic field intensity is 1200 Oe-2000 Oe, and the six-section magnetic field intensity is 600 Oe-1200 Oe.
Compared with the prior art, the invention has the advantages that:
1) the magnetite ore stage grinding and selecting process with the function of sand setting and tailing discarding can discard a section of graded sand setting qualified tailings with the yield of more than 5 percent, reduce the sand setting return amount of a section of hydrocyclone, reduce the circulating load of a section of ball mill and improve the processing capacity of a section of grinding;
2) the magnetite ore stage grinding and selecting process with the function of sand setting and tailing discarding can discard the qualified tailings with the yield of two-stage grading sand setting of more than 10 percent, reduce the sand setting return amount of a two-stage hydrocyclone, reduce the cyclic load of a two-stage stirring mill and improve the processing capacity of two-stage grinding;
3) the stirring mill is adopted to replace a fine grinding ball mill, so that the energy consumption can be obviously reduced, and the power consumption of ore grinding is saved by more than 30%;
4) the abrasion degree of the ceramic balls in the stirring mill is less than that of the steel balls in the ball mill, and the ball consumption cost is saved by over 50 percent.
Drawings
FIG. 1 is a mass flow chart of the magnetite stage grinding process with sand setting and tailing discarding in the first embodiment.
FIG. 2 is a mass flow chart of the magnetite stage grinding process with sand setting and tailing discarding in example two.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the drawings.
Example one
As shown in figure 1, the magnetite stage grinding and dressing process with sand setting and tailing throwing functions comprises the following steps:
step 1, feeding raw ores with the grade of 28.36% and the granularity of-12 mm into a first-stage ball mill for grinding, and feeding discharged ores of the first-stage ball mill into a first-stage cyclone for classification to obtain a first-stage classified overflow product with the content of-200 meshes of 53.49% and a first-stage classified sand setting product with the content of-200 meshes of 38.45%, wherein the process also comprises the following steps:
and 2, feeding the first-stage graded sand setting product into a first-stage magnetic separator for separation, discarding tailings of the first-stage magnetic separator, wherein the grade of the first-stage magnetic tailings is 6.04%, and the yield is 6.64%. The concentrate of the first-stage magnetic separator returns to the first-stage ball mill to form semi-closed-circuit ore grinding of the first-stage ore grinding classification operation;
and 3, feeding the first-stage graded overflow product into a second-stage magnetic separator for separation, discarding tailings of the second-stage magnetic separator, wherein the grade of the tailings of the second-stage magnetic separator is 1.58%, and the yield is 26.54%. The concentrate of the second-stage magnetic separator is used as the ore feeding for the second-stage ore grinding grading operation;
step 4, feeding the concentrate of the second-stage magnetic separator into a second-stage stirring mill for grinding, and feeding the ore discharged from the second-stage stirring mill into a second-stage cyclone for grading to obtain a second-stage graded overflow product with-200 meshes of 84.12% and a second-stage graded settled sand product with-200 meshes of 63.78%;
and 5, feeding the two-stage grading settled sand product into a three-stage magnetic separator for separation, discarding tailings of the three-stage magnetic separator, wherein the grade of the tailings of the three-stage magnetic separator is 5.70%, and the yield is 18.25%. Concentrate of the three-section magnetic separator returns to the two-section stirring mill to form semi-closed-circuit ore grinding of the two-section ore grinding classification operation;
step 6, feeding the second-stage graded overflow product into a four-stage magnetic separator for separation, feeding concentrate of the four-stage magnetic separator into a five-stage magnetic separator for separation, feeding concentrate of the five-stage magnetic separator into a six-stage magnetic separator for separation, wherein the concentrate of the six-stage magnetic separator is final concentrate, the grade of the final concentrate is 68.71%, the recovery rate is 88.25%, and the yield is 33.69%;
and 7, combining the first-section magnetic separator tailings, the second-section magnetic separator tailings, the third-section magnetic separator tailings, the fourth-section magnetic separator tailings, the fifth-section magnetic separator tailings and the sixth-section magnetic separator tailings into final tailings, wherein the grade of the final tailings is 7.86%, and the recovery rate is 11.75%. The yield was 66.31%.
Wherein the concentration of the stirring grinding is 50%, the volume filling rate of the stirring grinding is 80%, the ratio of material to ball is 0.8, the added grinding medium is ceramic ball, and the linear speed of the edge grinding edge of the stirring grinding is 3 m/s. The magnetic field intensity of the first-stage magnetic separator is 1500Oe, and the magnetic field intensity of the second-stage magnetic separator is 2000 Oe. The magnetic field intensity of the three-section magnetic separator is 2200Oe, the magnetic field intensity of the four-section magnetic separator is 2400Oe, the magnetic field intensity of the five-section magnetic separator is 1800Oe, and the magnetic field intensity of the six-section magnetic separator is 1000 Oe.
Example two
As shown in fig. 2, the magnetite stage grinding process with sand setting and tailing throwing in example 1 is adopted, and the grinding and magnetic separation method is completely the same as that in example 1, and the difference is that:
(1) the total iron grade of the raw ore is 31.13 percent,
(2) the content of the first-stage graded overflow product-200 meshes is 55.57%, and the content of the second-stage graded overflow product-200 meshes is 86.33%. Finally, the TFe grade in the magnetic concentrate is 69.11%, the recovery rate is 88.09%, and the yield is 36.10%. The grade of the final tailings is 9.67%, the recovery rate is 11.91%, and the yield is 63.90%.
Claims (4)
1. A magnetite ore stage grinding and separating process with sand setting and tailing throwing functions comprises the following steps:
step 1, feeding raw ores with the grade of 27% -32% and the granularity of-12 mm into a first-stage ball mill for grinding, and feeding discharged ores of the first-stage ball mill into a first-stage cyclone for classification to obtain a first-stage classification overflow product with the content of-200 meshes of 50% -65% and a first-stage classification sand setting product with the content of-200 meshes of 30% -45%, and the process is characterized by further comprising the following steps of:
step 2, feeding the first-stage graded sand setting product into a first-stage magnetic separator for sorting, discarding tailings of the first-stage magnetic separator, and returning concentrate of the first-stage magnetic separator to the first-stage ball mill to form semi-closed-circuit ore grinding of first-stage ore grinding grading operation;
step 3, feeding the first-stage graded overflow product into a second-stage magnetic separator for sorting, discarding tailings of the second-stage magnetic separator, and taking concentrate of the second-stage magnetic separator as ore feeding for second-stage ore grinding and grading operation;
step 4, feeding the concentrate of the second-stage magnetic separator into a second-stage stirring mill for grinding, and feeding the discharged ore of the second-stage stirring mill into a second-stage cyclone for grading to obtain a second-stage graded overflow product with 80-95% of-200 meshes and a second-stage graded settled sand product with 45-65% of-200 meshes;
step 5, feeding the two-stage graded sand setting product into a three-stage magnetic separator for separation, discarding tailings of the three-stage magnetic separator, and returning concentrate of the three-stage magnetic separator to the two-stage stirring mill to form semi-closed-circuit ore grinding of two-stage ore grinding grading operation;
step 6, feeding the two-stage graded overflow product into a four-stage magnetic separator for separation, feeding concentrate of the four-stage magnetic separator into a five-stage magnetic separator for separation, feeding concentrate of the five-stage magnetic separator into a six-stage magnetic separator for separation, wherein the concentrate of the six-stage magnetic separator is final concentrate, the grade of the final concentrate is 65% -70%, the recovery rate is 85% -90%, and the yield is 30% -40%;
and 7, combining the first-section magnetic separator tailings, the second-section magnetic separator tailings, the third-section magnetic separator tailings, the fourth-section magnetic separator tailings, the fifth-section magnetic separator tailings and the sixth-section magnetic separator tailings into final tailings, wherein the grade of the final tailings is 7-11%, the recovery rate is 10-15%, and the yield is 60-70%.
2. The process for the stage grinding and selecting of magnetite ore with sand setting and tailing discarding functions as claimed in claim 1, wherein the magnetite raw ore contains chemical elements and the mass fractions of the elements: 25-32% of TFe, 228-32% of SiO, 30.6-1.0% of Al2O30, 4-6% of CaO, 0.7-1.0% of MgO, 0.05-0.08% of S, 0.01-0.04% of P, and the balance of oxygen and other impurity components.
3. The process for the stage grinding and selecting of magnetite ore with sand setting and tailing discarding functions as claimed in claim 1, wherein the ore grinding medium of the stirring mill is ceramic balls, the ore grinding mode is wet grinding, and the ratio of material balls is 0.5-0.9: 1, the medium filling rate is 60-90%, the edge linear velocity of the stirrer is 3-6 m/s, and the ore grinding concentration is 50-80%.
4. The process for the staged milling separation of magnetite ore with sand setting and tailing discarding functions as claimed in claim 1, wherein the first stage magnetic separation equipment adopts a cylindrical magnetic separator, and the magnetic field intensity is 800 Oe-1500 Oe; the two-section magnetic separation equipment adopts a cylindrical magnetic separator, and the magnetic field intensity is 1500 Oe-2500 Oe; the three-section magnetic separation magnetic field intensity is 1500 Oe-2500 Oe, the four-section magnetic separation magnetic field intensity is 2000 Oe-2800 Oe, the five-section magnetic field intensity is 1200 Oe-2000 Oe, and the six-section magnetic field intensity is 600 Oe-1200 Oe.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101530824A (en) * | 2009-04-14 | 2009-09-16 | 金易通科技（北京）有限公司 | A coal dressing method and system of four-product jigging primary cleaning, secondary head coal small simplified heavy medium reelecting |
| AU2019100569A4 (en) * | 2019-05-29 | 2019-08-01 | Vanadia Pty Ltd | This is an extraction process which maximises resource utilisation by pre-concentrating vanadium oxides from overburden above a metal deposit and from vanadium - bearing iron ore deposits. |
| CN112808447A (en) * | 2021-01-27 | 2021-05-18 | 鞍钢集团矿业设计研究院有限公司 | Grading grinding and selecting process for lean hematite pre-selection coarse-grained concentrate |
| CN113260725A (en) * | 2018-11-14 | 2021-08-13 | 铁桥运营私人有限公司 | Method and apparatus for processing magnetite |
| CN113333158A (en) * | 2021-04-26 | 2021-09-03 | 安徽金日晟矿业有限责任公司 | Flotation-free mineral separation and recovery process for mixed iron ore |
| CN113385299A (en) * | 2021-05-28 | 2021-09-14 | 鞍钢集团矿业有限公司 | Magnetic-gravity-magnetic combined ore dressing process for treating lean magnetite ore |
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2022
- 2022-04-26 CN CN202210443484.1A patent/CN114887758B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101530824A (en) * | 2009-04-14 | 2009-09-16 | 金易通科技（北京）有限公司 | A coal dressing method and system of four-product jigging primary cleaning, secondary head coal small simplified heavy medium reelecting |
| CN113260725A (en) * | 2018-11-14 | 2021-08-13 | 铁桥运营私人有限公司 | Method and apparatus for processing magnetite |
| AU2019100569A4 (en) * | 2019-05-29 | 2019-08-01 | Vanadia Pty Ltd | This is an extraction process which maximises resource utilisation by pre-concentrating vanadium oxides from overburden above a metal deposit and from vanadium - bearing iron ore deposits. |
| CN112808447A (en) * | 2021-01-27 | 2021-05-18 | 鞍钢集团矿业设计研究院有限公司 | Grading grinding and selecting process for lean hematite pre-selection coarse-grained concentrate |
| CN113333158A (en) * | 2021-04-26 | 2021-09-03 | 安徽金日晟矿业有限责任公司 | Flotation-free mineral separation and recovery process for mixed iron ore |
| CN113385299A (en) * | 2021-05-28 | 2021-09-14 | 鞍钢集团矿业有限公司 | Magnetic-gravity-magnetic combined ore dressing process for treating lean magnetite ore |
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