CN114534904A - Beneficiation method for fine-grain embedded garnet ore - Google Patents
Beneficiation method for fine-grain embedded garnet ore Download PDFInfo
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- CN114534904A CN114534904A CN202210104362.XA CN202210104362A CN114534904A CN 114534904 A CN114534904 A CN 114534904A CN 202210104362 A CN202210104362 A CN 202210104362A CN 114534904 A CN114534904 A CN 114534904A
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- 239000002223 garnet Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims abstract description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 15
- 239000011707 mineral Substances 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 8
- 239000012141 concentrate Substances 0.000 claims description 30
- 238000000227 grinding Methods 0.000 claims description 20
- 229910052611 pyroxene Inorganic materials 0.000 claims description 13
- 230000002000 scavenging effect Effects 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 6
- 239000011362 coarse particle Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000004566 building material Substances 0.000 claims description 3
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 claims description 3
- 229910000271 hectorite Inorganic materials 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000003672 processing method Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000003082 abrasive agent Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
Images
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
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- 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
-
- 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
Abstract
The invention discloses a mineral processing method of fine-grained embedded garnet, which relates to the technical field of mineral processing, and comprises the steps of washing 1.5cm of raw ore which is crushed to be qualified by a spiral ore washer, separating the ore from soil, and distinguishing-0.15 mm from +0.15mm, wherein the high-quality garnet is obtained, the content of the garnet is 82%, the recovery rate of the ore is 75%, and the yield is 32%. The whole process flow is simpler, the energy consumption is lower, the production cost is low, the separation index is more stable, useful minerals in the ores are effectively recovered, and the environment is not polluted.
Description
Technical Field
The invention relates to the technical field of mineral processing, in particular to a mineral separation method for fine-grained embedded garnet.
Background
Garnet is chemically inert, high in melting point, good in toughness, insoluble in water, its solubility in acid is only 1%, and it contains essentially no free silicon, and has high physical impact resistance, high hardness, edge sharpness, grinding power and specific gravity, and its ability of recycling, so that it is an ideal multipurpose material for many industrial departments. From as a percolation medium to water jet cutting, grit blasting, etc.
Garnet is being widely used as a natural mineral abrasive, and its yield and consumption amount are greatly different due to the difference of garnet resources and industrial development intensity in countries around the world. The main producing countries are the United states, India, Australia, etc. Since 1978, the world has dominated the amount of mass production, whether yield or tip expense, 50% of which have been used as abrasives. The united states and some other countries and regions are working to develop an environmental protection rule for the forbidden silica abrasives, creating a good understanding of the expansion of the garnet abrasive market.
As grinding grade garnets, there can be subdivided into two categories: sand blasting grade and water blasting grade. Crushing mined or collected garnet into small particles, larger than 60 mesh, commonly used for sand blasting; 20 to 60 mesh garnets for water jet cutting; others are smaller than 20 mesh for polishing glass and lapping. In summary, larger particles are used for rapid processing operations, while smaller particle garnets are used for fine finishing, so a beneficiation process of fine-grained embedded garnet ore has been devised herein in order to solve the above problems.
Disclosure of Invention
The invention aims to provide a beneficiation method for fine-grained embedded garnet ore, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a mineral separation method for fine-grained embedded garnet ore comprises the steps of washing qualified raw ore with the size of-1.5 cm after being crushed by a spiral ore washer, separating ore from soil, distinguishing-0.15 mm from +0.15mm, grinding the raw ore with the size of +0.15mm in a first-stage closed circuit mode, entering a reselection process when the qualified size fraction is-0.15 mm, returning the unqualified size fraction to a rod mill, and grinding the unqualified size fraction to the qualified size fraction.
In a further embodiment, the-0.15 mm raw ore enters a hydrocyclone for graded desliming, +0.1mm enters a gravity separation process, and-0.1 mm directly enters a scavenging process.
In a further embodiment, the obtained qualified fraction product is firstly subjected to two-rough two-fine two-sweep reselection, and two-section rough reselection is carried out to obtain two products of garnet rough concentrate and green pyroxene rough concentrate.
In a further embodiment, garnet rough concentrate enters two-stage concentration, green pyroxene rough concentrate enters two-stage scavenging, the obtained product of concentration is garnet concentrate, and green pyroxene concentrate is obtained by scavenging.
In a further embodiment, the garnet concentrate obtained is filtered, dried and then conveyed to a hot sand warehouse through a conveying belt for buffer storage and temperature reduction, and then the garnet concentrate can wait for the next treatment.
In a further embodiment, the obtained green pyroxene concentrate is dried in the air and used as a building material.
In a further embodiment, the beneficiated return water is recycled back into the process. .
In a further embodiment, the tailing pulp after two-stage scavenging is pumped to a thickener for concentration, tailings with the moisture content of less than 10% of filter paper of the filter are used as a construction backfill material, and return water is returned to the production flow for continuous use.
Preferably, the ore dressing method based on the fine-grained embedded garnet ore comprises the following steps:
a1, crushing to obtain-1.5 cm of raw ore, washing the raw ore by a spiral ore washer, separating the raw ore from soil, and classifying and desliming the raw ore with the particle size of-0.15 mm by a hydrocyclone after washing;
a2, +0.15mm ore is ground and sieved under the condition that the concentration is 60%, and is divided into +0.15mm coarse particles to return to a mill for regrinding, -0.15mm size fraction and graded desliming underflow are size-regulated into ore pulp with the concentration of 30%, and two-coarse and two-fine reselection is carried out (the gravity reselection equipment is a spiral chute);
a3, filtering and dehydrating the garnet product obtained at this time, and conveying the garnet product to a storage yard for temporary storage through a conveying belt; and (3) carrying out ore washing and scavenging on the overflow of the graded desliming and the two coarse tailings by a spiral classifier twice, returning sand to form gravity-separated hectorite, concentrating and filtering an overflow product, and then, carrying out dry discharge on the tailings to be used as building backfill, and returning backwater for recycling.
Compared with the prior art, the invention has the beneficial effects that:
the invention can obtain high-quality garnet with the garnet substance content of 82%, the mineral recovery rate of 75% and the yield of 32%, compared with the prior art, the invention aims at the crushed qualified ore, adopts the method of washing, grading and desliming, grinding, grading and reselecting, firstly adopts the washing and grading and desliming to remove the soil in the ore on the basis of grinding and reselecting, firstly recovers the garnet with fine grain grade, then adopts the grinding and reselecting to separate the garnet mineral from the gangue mineral, and finally filters and discharges the tailings, and the invention has the advantages of simpler overall process flow, lower energy consumption, low production cost, more stable sorting index, effective recovery of useful minerals in the ore and no pollution to the environment.
Drawings
Fig. 1 is a flow chart of the beneficiation process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, the present embodiment provides a beneficiation method for fine-grained embedded garnet ore, which includes that-1.5 cm of raw ore after being crushed to be qualified is washed by a spiral ore washer, the ore is separated from soil, and can be distinguished between-0.15 mm and +0.15mm, at this time, the raw ore with +0.15mm is subjected to a section of closed circuit grinding, the qualified grade with-0.15 mm enters a gravity separation process, and the unqualified grade with +0.5mm returns to a rod mill and is ground to the qualified grade.
In the embodiment, the spiral ore washer has the characteristics of long spiral body, good sealing performance, simple structure, strong processing capacity, convenience in maintenance, and low sand water content and mud content.
The rod mill has the effects of small ore feeding granularity, low energy consumption, low consumption of ore grinding media and low consumption of lining plates, and has the functions of selective grinding, narrow product granularity range, uniform product granularity, less over-crushing phenomenon, high ore grinding efficiency, 60% ore grinding concentration and 50% ore grinding fineness of-100 meshes.
Then the raw ore with the diameter of-0.15 mm enters a hydraulic cyclone for graded desliming, the raw ore with the diameter of +0.1mm enters a gravity separation process, and the raw ore with the diameter of-0.1 mm directly enters a scavenging process.
In this embodiment: the hydrocyclone is a high-efficiency classification and desliming device, and has the advantages of simple structure, small floor area, low price, large treatment capacity and high classification efficiency.
And (3) firstly, carrying out two-coarse two-fine two-sweep gravity separation on the obtained qualified fraction product, and carrying out two-stage rough separation to obtain two products of garnet rough concentrate and green pyroxene rough concentrate.
And carrying out two-stage concentration on the garnet rough concentrate, carrying out two-stage scavenging on the green pyroxene rough concentrate, wherein the obtained product is the garnet concentrate after the concentration, and the green pyroxene concentrate is obtained after the scavenging.
In this embodiment: the spiral chute has the advantages of stable sorting process, easy control, large allowable variation range of ore feeding concentration, high enrichment ratio, high recovery rate, small occupied area, low water consumption, simple structure, no need of power, large treatment capacity and the like, and the spiral classifier has a small installation inclination angle and has the advantages of lengthened groove body, increased ore washing distance, better ore washing effect and lower power consumption.
And filtering and drying the obtained garnet concentrate, and conveying the garnet concentrate to a hot sand warehouse through a conveying belt for caching and cooling, so as to wait for the next treatment.
The obtained green pyroxene concentrate is dried in the air and then used as a building material.
And returning the refined return water to the process for recycling.
Pumping the tailing pulp scavenged in the two sections to a thickener for concentration, using the tailings with the water content of less than 10% of the filter paper of the filter as a building backfill material, and returning the backwater to the production flow for continuous use.
The working principle is as follows: firstly crushing to obtain 1.5cm of raw ore, washing the raw ore by a spiral ore washer, separating the ore from soil, and after washing, classifying and desliming the raw ore with the particle size of-0.15 mm by a hydrocyclone. Grinding and screening the +0.15mm ore under the condition that the concentration is 60 percent, dividing into +0.15mm coarse particles, returning the +0.15mm coarse particles to a grinding machine for regrinding, mixing the-0.15 mm particle fraction and the bottom flow of the graded desliming into ore pulp with the concentration of 30 percent, performing two-coarse two-fine gravity separation (the gravity separation equipment is a spiral chute), filtering and dehydrating the obtained garnet product, and conveying the garnet product to a storage yard for temporary storage through a conveying belt; and (3) carrying out ore washing and scavenging on the overflow of the graded desliming and the two coarse tailings by a spiral classifier twice, returning sand to form gravity-separated hectorite, concentrating and filtering an overflow product, and then, carrying out dry discharge on the tailings to be used as building backfill, and returning backwater for recycling.
By adopting the mode of the production process of 'washing, grinding, screening and grading', the application of washing, checking and screening can reduce the excessive crushing of ores to the maximum extent, and the application of a hydrocyclone can throw mud in the ores in advance to ensure the cleanness of the ores entering the mineral separation process.
TABLE 1 example 1 respective garnet and rutile concentrate grading index/%
By adopting the production process, under the condition that the grade of the raw ore is reduced, the grade of the garnet concentrate is increased by 1.6 percent in the same ratio, the yield is increased by 5.46 percent, and the recovery rate is increased by 10.56 percent in the same ratio; meanwhile, the content of the green pyroxene concentrate is 80 percent, the mineral recovery rate is 80.66 percent, and the yield is 28.55 percent; the whole process flow is simpler, the energy consumption is lower, the production cost is low, the separation index is more stable, useful minerals in the ores are effectively recovered, and the environment is not polluted.
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 (9)
1. A mineral separation method for fine-grained embedded garnet ore comprises the steps of washing qualified raw ore with the size of-1.5 cm after being crushed by a spiral ore washer, separating ore from soil, distinguishing-0.15 mm from +0.15mm, grinding the raw ore with the size of +0.15mm in a first-stage closed circuit mode, entering a reselection process when the qualified size fraction is-0.15 mm, returning the unqualified size fraction to a rod mill, and grinding the unqualified size fraction to the qualified size fraction.
2. The beneficiation method of fine-grained embedded garnet ore according to claim 1, characterized in that: then the raw ore with the diameter of-0.15 mm enters a hydraulic cyclone for graded desliming, the raw ore with the diameter of +0.1mm enters a gravity separation process, and the raw ore with the diameter of-0.1 mm directly enters a scavenging process.
3. The beneficiation method for fine-grained embedded garnet ore according to claim 2, characterized in that: and (3) firstly, carrying out two-coarse two-fine two-sweep gravity separation on the obtained qualified fraction product, and carrying out two-stage rough separation to obtain two products of garnet rough concentrate and green pyroxene rough concentrate.
4. The beneficiation method for fine-grained embedded garnet ore according to claim 3, characterized in that: and carrying out two-stage concentration on the garnet rough concentrate, carrying out two-stage scavenging on the green pyroxene rough concentrate, wherein the obtained product is the garnet concentrate after the concentration, and the green pyroxene concentrate is obtained after the scavenging.
5. The beneficiation method for fine-grained embedded garnet ore according to claim 4, characterized in that: and filtering and drying the obtained garnet concentrate, and conveying the garnet concentrate to a hot sand warehouse through a conveying belt for caching and cooling, so as to wait for the next treatment.
6. The beneficiation method for fine-grained embedded garnet ore according to claim 4, characterized in that: the obtained green pyroxene concentrate is dried in the air and then used as a building material.
7. The beneficiation method for fine-grained embedded garnet ore according to claim 4, characterized in that: and returning the refined return water to the process for recycling.
8. The beneficiation method for fine-grained embedded garnet ore according to claim 4, characterized in that: pumping the tailing pulp scavenged in the two sections to a thickener for concentration, using the tailings with the water content of less than 10% of the filter paper of the filter as a building backfill material, and returning the backwater to the production flow for continuous use.
9. The method for beneficiation of fine-grained embedded garnet ore according to claim 1, characterized by comprising the steps of:
(1) crushing to obtain-1.5 cm of raw ore, washing the raw ore by a spiral ore washer, separating the ore from soil, washing the raw ore to-0.15 mm of raw ore, and classifying and desliming the raw ore by a hydrocyclone;
(2) grinding and screening the +0.15mm ore under the condition that the concentration is 60 percent, dividing the +0.15mm ore into coarse particles, returning the coarse particles to a grinding machine for regrinding, mixing the-0.15 mm particle fraction and the bottom flow of the graded desliming into ore pulp with the concentration of 30 percent, and performing two-coarse two-fine gravity separation (the gravity separation equipment is a spiral chute);
(3) then, the obtained garnet product is filtered, dehydrated and then is transported to a storage yard for temporary storage through a transport belt; and (3) carrying out ore washing and scavenging on the overflow of the graded desliming and the two coarse tailings by a spiral classifier twice, returning sand to form gravity-separated hectorite, concentrating and filtering an overflow product, and then, carrying out dry discharge on the tailings to be used as building backfill, and returning backwater for recycling.
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