CN113546748A - Machine-made sand flotation and magnetic separation combined mica removing process - Google Patents
Machine-made sand flotation and magnetic separation combined mica removing process Download PDFInfo
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- CN113546748A CN113546748A CN202110812314.1A CN202110812314A CN113546748A CN 113546748 A CN113546748 A CN 113546748A CN 202110812314 A CN202110812314 A CN 202110812314A CN 113546748 A CN113546748 A CN 113546748A
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- 238000000034 method Methods 0.000 title claims abstract description 89
- 239000004576 sand Substances 0.000 title claims abstract description 81
- 238000005188 flotation Methods 0.000 title claims abstract description 74
- 229910052618 mica group Inorganic materials 0.000 title claims abstract description 59
- 239000010445 mica Substances 0.000 title claims abstract description 56
- 238000007885 magnetic separation Methods 0.000 title claims abstract description 50
- 238000005406 washing Methods 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 3
- 239000006148 magnetic separator Substances 0.000 claims description 28
- 239000002351 wastewater Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 10
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000002562 thickening agent Substances 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 6
- 238000010907 mechanical stirring Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000003607 modifier Substances 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- -1 ether amine Chemical class 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 2
- 244000060011 Cocos nucifera Species 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 239000008394 flocculating agent Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000006227 byproduct Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 75
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
-
- 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
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a flotation and magnetic separation combined mica removing process for machine-made sand, which relates to the field of sand production and comprises a slurry mixing procedure, a flotation procedure, a magnetic separation procedure, a sand washing procedure, a concentration procedure and a filtering procedure. Compared with the prior art, the invention has the beneficial effects that: the invention adopts a wet process, and compared with the traditional dry process, the invention has the advantages of no dust and environmental friendliness; the invention adopts a combined process of magnetic separation and flotation, and is suitable for various micas in the sand; the present invention can obtain mica as side product for other use.
Description
Technical Field
The invention relates to the field of sandstone production, in particular to a flotation and magnetic separation combined mica removing process for machine-made sand.
Background
With the development of economic society, the basic construction plays an important role in the development of economy in China, particularly in key projects, the requirement on gravels is higher and higher, mica is a harmful component of sand used for the key projects, the requirement (not more than 2%) of the construction sand in the national standard GBT14684-2011 on the content of the mica is better for the key projects, and the lower the content of the mica is, the better the content of the mica is. The traditional technology adopts an air force method to remove mica, but a large amount of dust is discharged in the process of removing mica by the air force method, so that environmental dust pollution is easily caused. In addition, it is difficult to achieve a desired separation effect by only one method for sand containing biotite and muscovite. Therefore, different methods for removing mica need to be combined to reduce the mica content in the sand, so as to improve the quality of the sand for key engineering.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a machine-made sand flotation and magnetic separation combined mica removing process which has the advantages of good mica removing effect and high production efficiency.
The purpose of the invention is achieved by the following technical scheme: a machine-made sand flotation and magnetic separation combined mica removing process comprises the following steps:
step one, a size mixing procedure: fully mixing the raw material sand with water, and adding a regulator, an inhibitor and a collector to obtain a mixed product a;
step two, a flotation process: performing flotation on the product a obtained in the step one through flotation equipment to obtain a product b positioned in a foam layer of the flotation equipment and a product c positioned in a slurry layer of the flotation equipment;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two through magnetic separation equipment to obtain a product d adsorbed by the magnetic separation equipment and a product e not adsorbed by the magnetic separation equipment;
step four, a sand washing procedure: washing sand of the product d obtained in the step three through sand washing equipment to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two through concentration and dehydration equipment to obtain concentrated ore pulp h and wastewater i;
step six, a filtering process: and D, filtering the concentrated ore pulp h obtained in the step five through a filtering device to obtain mica j and wastewater k.
As a further technical scheme, the water content percentage of the product a in the step one is 45-85% by weight.
According to a further technical scheme, the modifier in the first step is one or two of sodium carbonate and lime, and 50-2000 g of the modifier is added to each ton of dry ore.
According to a further technical scheme, in the step one, the inhibitor is one or more of sodium hexametaphosphate, carboxymethyl cellulose, water glass and starch, and 150-3000 g of the inhibitor is added to each ton of dry ore.
According to a further technical scheme, in the first step, the collecting agent is one or more of dodecylamine, octadecylamine, cocoanut oil amine, ether amine and sodium oleate, and 10-500 g of the collecting agent is added to each ton of dry ore.
As a further technical scheme, in the second step, the flotation equipment is one or more of a mechanical stirring type flotation machine, an inflatable type flotation machine and an inflatable stirring type flotation machine.
As a further technical scheme, in the third step, the magnetic separation equipment is one or more of a wet-type cylinder magnetic separator, a wet-type disc magnetic separator, a flat-plate magnetic separator and a vertical-ring high-gradient magnetic separator; the magnetic field intensity of the magnetic separator is 3000-15000 Gs.
As a further technical scheme, the sand washing equipment in the fourth step is one or more of a sand washing machine, a sieve, a hydrocyclone and a spiral classifier.
As a further technical scheme, in the step five, the concentration and dehydration equipment is one or two of a thickener and a concentration tank; and adding 2-50 g of flocculating agent per ton in the fifth step according to the weight of the solid; the concentrated ore pulp h contains water with the mass percent not more than 55%.
As a further technical scheme, the filtering equipment in the sixth step is one or two of a filter press, a spiral hill type vacuum filter, a belt type vacuum filter and a ceramic filter.
The invention has the beneficial effects that:
1. the invention adopts a wet process, and compared with the traditional dry process, the invention has the advantages of no dust and environmental friendliness;
2. the invention adopts a combined process of magnetic separation and flotation, and is suitable for various micas in the sand;
3. the present invention can obtain mica as side product for other use.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example 1: a machine-made sand flotation and magnetic separation combined mica removing process comprises the following steps:
step one, a size mixing procedure: fully mixing the raw material sand with water, and adding 800g of sodium carbonate, 600g of sodium hexametaphosphate, 30g of dodecylamine and 60g of sodium oleate into each ton of dry ore to obtain a mixed product a, wherein the water content of the product a is 56% by weight;
step two, a flotation process: performing flotation on the product a obtained in the step one through a mechanical stirring type flotation machine to obtain a product b positioned in a foam layer of the flotation machine and a product c positioned in a pulp layer of the flotation machine;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two by a wet type drum magnetic separator with the magnetic field intensity of 6500Gs to obtain a product d adsorbed by the magnetic separator and a product e not adsorbed by the magnetic separator;
step four, a sand washing procedure: washing sand of the product d obtained in the step three by a wheel type sand washer to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two by a thickener, and adding 28g of flocculant into each ton of the product c according to the weight of solid during concentration; obtaining concentrated ore pulp h and waste water i with the water mass fraction of 47%;
step six, a filtering process: and (4) filtering the concentrated ore pulp h obtained in the fifth step by using a spiral hill type vacuum filter to obtain mica j and wastewater k.
This example can reduce the weight percent of mica in the raw sand from 2.9% to 0.29%.
Example 2: a machine-made sand flotation and magnetic separation combined mica removing process comprises the following steps:
step one, a size mixing procedure: fully mixing the raw material sand with water, and adding 100g of sodium carbonate, 600g of CMC, 30g of ether amine and 90g of sodium oleate into each ton of dry ore to obtain a mixed product a, wherein the water content of the product a is 61 percent by weight;
step two, a flotation process: performing flotation on the product a obtained in the step one through an inflatable flotation machine to obtain a product b positioned in a foam layer of the flotation machine and a product c positioned in a pulp layer of the flotation machine;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two by a wet type cylinder magnetic separator with the magnetic field intensity of 7000Gs to obtain a product d adsorbed by the magnetic separator and a product e not adsorbed by the magnetic separator;
step four, a sand washing procedure: washing sand of the product d obtained in the step three by a wheel type sand washer to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two by a thickener, and adding 25g of flocculant into each ton of the product c according to the weight of solid during concentration; obtaining concentrated ore pulp h with water content of 52% and waste water i;
step six, a filtering process: and (4) filtering the concentrated ore pulp h obtained in the fifth step by using a spiral hill type vacuum filter to obtain mica j and wastewater k.
This example can reduce the weight percent of mica in the raw sand from 2.6% to 0.11%.
Example 3: a machine-made sand flotation and magnetic separation combined mica removing process comprises the following steps:
step one, a size mixing procedure: fully mixing the raw material sand with water, and adding 500g of lime, 500g of sodium hexametaphosphate, 70g of dodecylamine and 50g of sodium oleate into each ton of dry ore to obtain a mixed product a, wherein the water content of the product a is 62% by weight;
step two, a flotation process: performing flotation on the product a obtained in the step one through an air agitation type flotation machine to obtain a product b positioned in a foam layer of the flotation machine and a product c positioned in a pulp layer of the flotation machine;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two by a wet drum magnetic separator with the magnetic field intensity of 8000Gs to obtain a product d adsorbed by the magnetic separator and a product e not adsorbed by the magnetic separator;
step four, a sand washing procedure: washing sand of the product d obtained in the step three by a wheel type sand washer to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two by a thickener, and adding 35g of flocculant into each ton of the product c according to the weight of solid during concentration; obtaining concentrated ore pulp h with water content of 44% and waste water i;
step six, a filtering process: and (4) filtering the concentrated ore pulp h obtained in the fifth step through a belt type vacuum filter to obtain mica j and wastewater k.
This example can reduce the weight percent of mica in the raw material-containing sand from 1.6% to 0.06%.
Example 4: a machine-made sand flotation and magnetic separation combined mica removing process comprises the following steps:
step one, a size mixing procedure: fully mixing the raw material sand with water, and adding 1200g of sodium carbonate, 1000g of water glass, 100g of octadecylamine and 80g of sodium oleate into each ton of dry ore to obtain a mixed product a, wherein the water content of the product a is 65 percent by weight;
step two, a flotation process: performing flotation on the product a obtained in the step one through a mechanical stirring type flotation machine to obtain a product b positioned in a foam layer of the flotation machine and a product c positioned in a pulp layer of the flotation machine;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two by a wet drum magnetic separator with the magnetic field intensity of 4500Gs to obtain a product d adsorbed by the magnetic separator and a product e not adsorbed by the magnetic separator;
step four, a sand washing procedure: washing sand of the product d obtained in the step three by a wheel type sand washer to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two by a thickener, and adding 40g of flocculant into each ton of the product c according to the weight of solid during concentration; obtaining concentrated ore pulp h and waste water i with the water content of 50 percent by mass;
step six, a filtering process: and (4) filtering the concentrated ore pulp h obtained in the fifth step by using a spiral hill type vacuum filter to obtain mica j and wastewater k.
This example can reduce the weight percent of mica in the raw sand from 2.3% to 0.12%.
Example 5: a machine-made sand flotation and magnetic separation combined mica removing process comprises the following steps:
step one, a size mixing procedure: fully mixing the raw material sand with water, and adding 1000g of sodium carbonate, 500g of starch, 120g of dodecylamine and 75g of sodium oleate into each ton of dry ore to obtain a mixed product a, wherein the water content of the product a is 63 percent by weight;
step two, a flotation process: performing flotation on the product a obtained in the step one through a mechanical stirring type flotation machine to obtain a product b positioned in a foam layer of the flotation machine and a product c positioned in a pulp layer of the flotation machine;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two by a wet type cylinder magnetic separator with the magnetic field intensity of 6000Gs to obtain a product d adsorbed by the magnetic separator and a product e not adsorbed by the magnetic separator;
step four, a sand washing procedure: washing sand of the product d obtained in the step three by a wheel type sand washer to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two by a thickener, and adding 35g of flocculant into each ton of the product c according to the weight of solid during concentration; obtaining concentrated ore pulp h with water content of 44% and waste water i;
step six, a filtering process: and (4) filtering the concentrated ore pulp h obtained in the fifth step through a ceramic vacuum filter to obtain mica j and wastewater k.
This example can reduce the mica weight percentage in the raw material-containing sand from 1.8% to 0.05%.
Example 6: a machine-made sand flotation and magnetic separation combined mica removing process comprises the following steps:
step one, a size mixing procedure: fully mixing raw material sand with water, and adding 750g of sodium carbonate, 1500g of water glass, 150g of dodecylamine and 220g of sodium oleate into each ton of dry ore to obtain a mixed product a, wherein the water content of the product a is 59 percent by weight;
step two, a flotation process: performing flotation on the product a obtained in the step one through an inflatable flotation machine to obtain a product b positioned in a foam layer of the flotation machine and a product c positioned in a pulp layer of the flotation machine;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two by a wet type cylinder magnetic separator with the magnetic field intensity of 11000Gs to obtain a product d adsorbed by the magnetic separator and a product e not adsorbed by the magnetic separator;
step four, a sand washing procedure: washing sand of the product d obtained in the step three by a spiral classifier to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two by a thickener, and adding 43g of flocculant per ton of solid weight during concentration; obtaining concentrated ore pulp h with water content of 40% and waste water i;
step six, a filtering process: and (4) filtering the concentrated ore pulp h obtained in the fifth step through a belt type vacuum filter to obtain mica j and wastewater k.
This example can reduce the weight percent of mica in the raw sand from 2.7% to 0.19%.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts a wet process, and compared with the traditional dry process, the invention has the advantages of no dust and environmental friendliness;
2. the invention adopts a combined process of magnetic separation and flotation, and is suitable for various micas in the sand;
3. the present invention can obtain mica as side product for other use.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (10)
1. A machine-made sand flotation and magnetic separation combined mica removing process is characterized in that: the method comprises the following steps:
step one, a size mixing procedure: fully mixing the raw material sand with water, and adding a regulator, an inhibitor and a collector to obtain a mixed product a;
step two, a flotation process: performing flotation on the product a obtained in the step one through flotation equipment to obtain a product b positioned in a foam layer of the flotation equipment and a product c positioned in a slurry layer of the flotation equipment;
step three, a magnetic separation process: carrying out magnetic separation on the product b obtained in the step two through magnetic separation equipment to obtain a product d adsorbed by the magnetic separation equipment and a product e not adsorbed by the magnetic separation equipment;
step four, a sand washing procedure: washing sand of the product d obtained in the step three through sand washing equipment to obtain sand f and waste water g after mica removal;
step five, a concentration process: concentrating the product c obtained in the step two through concentration and dehydration equipment to obtain concentrated ore pulp h and wastewater i;
step six, a filtering process: and D, filtering the concentrated ore pulp h obtained in the step five through a filtering device to obtain mica j and wastewater k.
2. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: the water content of the product a in the first step is 45-85% by weight.
3. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: in the first step, the modifier is one or two of sodium carbonate and lime, and 50-2000 g of the modifier is added to each ton of dry ore.
4. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: in the first step, the inhibitor is one or more of sodium hexametaphosphate, carboxymethyl cellulose, water glass and starch, and 150-3000 g of the inhibitor is added to each ton of dry ore.
5. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: in the first step, the collecting agent is one or more of dodecylamine, octadecylamine, cocoanut amine, ether amine and sodium oleate, and 10-500 g of the collecting agent is added to each ton of dry ore.
6. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: and in the second step, the flotation equipment is one or more of a mechanical stirring type flotation machine, an inflatable flotation machine and an inflatable stirring type flotation machine.
7. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: in the third step, the magnetic separation equipment is one or more of a wet-type cylindrical magnetic separator, a wet-type disc magnetic separator, a flat magnetic separator and a vertical ring high-gradient magnetic separator; the magnetic field intensity of the magnetic separator is 3000-15000 Gs.
8. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: and in the fourth step, the sand washing equipment is one or more of a sand washing machine, a sieve, a hydrocyclone and a spiral classifier.
9. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: in the fifth step, the concentration dehydration equipment is one or two of a thickener and a concentration tank; and adding 2-50 g of flocculating agent per ton in the fifth step according to the weight of the solid; the concentrated ore pulp h contains water with the mass percent not more than 55%.
10. The machine-made sand flotation and magnetic separation combined mica removal process as claimed in claim 1, which is characterized in that: in the sixth step, the filtering equipment is one or two of a filter press, a disk mountain type vacuum filter, a belt type vacuum filter and a ceramic filter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116037295A (en) * | 2023-02-14 | 2023-05-02 | 中国电建集团成都勘测设计研究院有限公司 | Method for removing mica in machine-made sand by wet method |
Citations (15)
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