CN109772578B - Treatment process for comprehensive utilization of kaolin tailings - Google Patents
Treatment process for comprehensive utilization of kaolin tailings Download PDFInfo
- Publication number
- CN109772578B CN109772578B CN201910080953.6A CN201910080953A CN109772578B CN 109772578 B CN109772578 B CN 109772578B CN 201910080953 A CN201910080953 A CN 201910080953A CN 109772578 B CN109772578 B CN 109772578B
- Authority
- CN
- China
- Prior art keywords
- magnetic separation
- granularity
- sand
- fine sand
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000008569 process Effects 0.000 title claims abstract description 51
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000005995 Aluminium silicate Substances 0.000 title claims abstract description 42
- 235000012211 aluminium silicate Nutrition 0.000 title claims abstract description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 242
- 239000004576 sand Substances 0.000 claims abstract description 210
- 238000007885 magnetic separation Methods 0.000 claims abstract description 133
- 238000005201 scrubbing Methods 0.000 claims abstract description 100
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000000498 ball milling Methods 0.000 claims abstract description 30
- 238000012216 screening Methods 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 239000006004 Quartz sand Substances 0.000 claims abstract description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 66
- 239000002002 slurry Substances 0.000 claims description 41
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 33
- 230000000737 periodic effect Effects 0.000 claims description 25
- 239000006148 magnetic separator Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 24
- 238000000746 purification Methods 0.000 claims description 20
- 239000000377 silicon dioxide Substances 0.000 claims description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 18
- 229910052681 coesite Inorganic materials 0.000 claims description 18
- 229910052593 corundum Inorganic materials 0.000 claims description 18
- 229910052906 cristobalite Inorganic materials 0.000 claims description 18
- 229910052682 stishovite Inorganic materials 0.000 claims description 18
- 229910052905 tridymite Inorganic materials 0.000 claims description 18
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 18
- 239000003814 drug Substances 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 12
- 238000011068 loading method Methods 0.000 claims description 12
- 238000009991 scouring Methods 0.000 claims description 8
- 239000005357 flat glass Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000005304 optical glass Substances 0.000 claims description 4
- 239000006059 cover glass Substances 0.000 claims description 3
- 241000764238 Isis Species 0.000 claims 1
- 239000011707 mineral Substances 0.000 abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 12
- 238000007873 sieving Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 21
- 238000004458 analytical method Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000000630 rising effect Effects 0.000 description 10
- 239000012141 concentrate Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000010453 quartz Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 239000010433 feldspar Substances 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses a process for comprehensively utilizing kaolin tailings, which takes the kaolin tailings as raw ore, and screens coarse sand with the granularity of more than 3.2mm to obtain fine sand with the granularity of less than or equal to 3.2 mm; sieving fine sand with granularity less than or equal to 3.2mmRespectively obtaining first coarse sand with the granularity of 0.6-3.2mm and first fine sand with the granularity of less than 0.6 mm; scrubbing, primary magnetic separation, secondary magnetic separation and classification are carried out on first fine sand with the granularity of less than 0.6mm to obtain Fe with the granularity of 0.1-0.6mm2O3A first product in an amount of greater than 60ppm and less than or equal to 100 ppm; the first coarse sand with the granularity of 0.6-3.2mm is subjected to ball milling, screening, first-stage magnetic separation, second-stage magnetic separation and classification to obtain a first-class product with the granularity of 0.1-0.6 mm. The kaolin tailing comprehensive utilization treatment process is used for purifying fine sand with the granularity of less than or equal to 3.2mm so as to remove Fe to a greater extent2O3The method can be used for separating sand which can be used as materials such as low-iron quartz sand or ceramic glaze and the like, and the utilization rate of kaolin tailings and the quality and performance of recovered minerals are improved.
Description
Technical Field
The invention relates to the technical field of comprehensive utilization of kaolin tailings, in particular to a comprehensive utilization treatment process of kaolin tailings.
Background
Kaolin is an important non-metallic mineral resource, has good physical and chemical properties such as plasticity, fire resistance and the like, has wide application, is mainly used for papermaking, ceramics and refractory materials, is used for coating, rubber filler, enamel glaze and white cement raw materials, and is used for industrial departments such as plastics, paint, pigment, grinding wheel, pencil, daily cosmetics, soap, pesticide, medicine, textile, petroleum, chemical industry, building materials, national defense and the like in a small amount; the kaolin tailings contain components such as quartz, feldspar, mica kaolinite and the like, wherein the quartz, the feldspar and the mica can be used as raw materials in industries such as glass or ceramics.
In the existing kaolin tailing utilization technology, methods for preparing quartz sand for glass production by using kaolin tailing, preparing raw materials for ultra-white glass by using kaolin tailing and recovering mica, feldspar and quartz sand from kaolin tailing are provided, but the methods all have a problem: the chemical composition analysis of different size fractions of mineral aggregates in the kaolin tailings is not carried out, and the targeted extraction and preparation of the mineral aggregates of different size fractions containing different chemical compositions are not carried out, so that the utilization rate of kaolin tailing resources is still not high; according to the component analysis results, the samples with the particle size larger than 3.2mm in the kaolin tailings contain more variegated minerals and Fe contained in the variegated minerals2O3The content of the impurities is higher, the hardness of the impurities is high,the ore grinding efficiency is affected, so the required ore dressing conditions are severer, and the traditional process directly carries out ore dressing purification and recovery on the raw tailings under the condition that the kaolin tailings are not effectively screened, so the recovered raw materials have poor quality and low comprehensive performance and cannot be used as preparation raw materials of better products; therefore, the reasonable utilization of the kaolin tailings is a problem which needs to be solved urgently in the kaolin processing industry.
Disclosure of Invention
The invention aims to overcome the defects or problems in the background art and provides a kaolin tailing comprehensive utilization treatment process, which is used for purifying fine sand with smaller particle size fraction and granularity of less than or equal to 3.2mm so as to remove Fe with higher content in coarse sand with larger particle size fraction2O3The separated ore sand product can be used as low-iron quartz sand, sand for ultra-white glass or ceramic glaze and sand for glass fiber, so that the effective utilization rate of the kaolin tailings can be improved, and the quality and performance of recovered minerals can be improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a process for comprehensively utilizing kaolin tailings comprises the steps of taking the kaolin tailings as raw ores, and screening coarse sand with the granularity of more than 3.2mm to obtain fine sand with the granularity of less than or equal to 3.2 mm; screening the fine sand with the granularity of less than or equal to 3.2mm to respectively obtain first coarse sand with the granularity of 0.6-3.2mm and first fine sand with the granularity of less than 0.6 mm; subjecting first fine sand with the particle size of less than 0.6mm to medium-free scrubbing by scrubbing equipment, sequentially subjecting the first fine sand to sequential magnetic separation by first-stage magnetic separation equipment and second-stage magnetic separation equipment to finally obtain first magnetic separation overflow slurry, grading the first magnetic separation overflow slurry by grading equipment to obtain first graded coarse sand with the particle size of 0.1-0.6mm and first graded fine sand with the particle size of less than 0.1mm, wherein the obtained first graded coarse sand with the particle size of 0.1-0.6mm is Fe2O3A first product in an amount of greater than 60ppm and less than or equal to 100 ppm; ball-milling and screening the obtained first coarse sand with the granularity of 0.6-3.2mm in sequenceAfter separation, obtaining second fine sand with the granularity of less than or equal to 0.6mm, carrying out magnetic separation on the second fine sand sequentially through a first-stage magnetic separation device and a second-stage magnetic separation device to finally obtain second magnetic separation overflow slurry, and grading the obtained second magnetic separation overflow slurry through a grading device to obtain second graded coarse sand with the granularity of 0.1-0.6mm and second graded fine sand with the granularity of less than 0.1 mm; the obtained second-grade coarse sand with the granularity of 0.1-0.6mm is Fe2O3Is greater than 60ppm and less than or equal to 100 ppm.
Further, the first type product is used as low-iron quartz sand or sand for ultra-white glass, wherein the yield of the first type product formed by the first grading coarse sand relative to raw ore is 47.73-47.99%, and the first type product contains 99.16-99.28% of SiO20.28-0.29% of Al2O3And 0.009-0.0095% Fe2O3(ii) a The first type of product consisting of the second classified grit has a yield of 32.19 to 32.68% relative to the raw ore and contains 99.2 to 99.59% of SiO20.22-0.32% of Al2O3And 0.0085-0.0090% Fe2O3。
Further, the first graded fine sand and the second graded fine sand are used as ceramic glaze or sand for glass fiber; wherein the yield of the first-grade fine sand relative to the raw ore is 1.03-1.26%, and the first-grade fine sand contains 96.36-96.48% of SiO20.68-0.71% of Al2O3And 0.012-0.016% Fe2O3(ii) a The yield of the second-grade fine sand relative to the raw ore is 3.93-4.15%, and the second-grade fine sand contains 99.38-96.5% of SiO20.23-0.26% of Al2O3And 0.026- -0.029% Fe2O3。
Further, the scrubbing equipment is a scrubbing machine, the concentration of the ore pulp during scrubbing is 50-60%, and the scrubbing time is 5-6 min.
Further, the first-stage magnetic separation equipment and the second-stage magnetic separation equipment for carrying out magnetic separation on the first fine sand and the second fine sand are both periodic high-gradient magnetic separators; the magnetic field intensity of the two sections of magnetic separation equipment is at least 5000 multiplied by 80 A.m-1(ii) a Two of the two-stage magnetic separation equipmentThe magnetic field strength is at least 10000 × 80 A.m-1。
Further, the first coarse sand with the granularity of 0.6-3.2mm is subjected to ball milling by a conical ball mill, the ball loading amount is 10-11Kg, and the ball milling time is 4.5-5 min.
Further, the first type of products formed by the second graded coarse sand are subjected to medium scrubbing by scrubbing equipment and then are subjected to medicine removal to obtain Fe2O3A second type of product in an amount of greater than 30ppm and less than or equal to 60 ppm.
Further, the second type product is used as cover glass or sand for photothermal glass, and the yield of the second type product relative to raw ore is 30.54-30.62%, and the second type product contains 99.53-99.75% of SiO20.084-0.088% of Al2O3And 0.0049-0.0052% Fe2O3。
Further, the scrubbing device for scrubbing with media is double-layer impeller scrubbing; the added medium is sulfuric acid, and the dosage of the sulfuric acid is 73.6-74.4 Kg.t-1The scrubbing time is 18-22 min; the scrubbing rotation speed is 1800 plus 2000 r.min-1(ii) a The concentration of the ore pulp during scrubbing is 50-60%, and the scrubbing time is 28-32 min.
Further, deeply purifying a first class product consisting of the second graded coarse sand, and then removing the medicine to obtain Fe2O3A third type of product having a content of 30ppm or less.
Furthermore, the third product is used as sand for optical glass and solar light guide plate glass, the yield of the third product relative to raw ore is 31.96-32.06%, and the third product contains more than 99.9% of SiO20.076-0.087% of Al2O3And 0.0025 to 0.0027% Fe2O3。
Further, the concentration of ore pulp when the second graded coarse sand is subjected to deep purification is 48-50%, the purification medium is sulfuric acid, and the dosage of the sulfuric acid is 500 Kg.t-1The time for deep purification is more than 1.5 h.
Further, after the coarse sand with the granularity of more than 3.2mm is screened out, the coarse sand with the granularity of less than or equal to that obtained by ball milling and screening in sequence0.6mm of third fine sand, carrying out magnetic separation on the third fine sand sequentially through a first-stage magnetic separation device and a second-stage magnetic separation device to finally obtain third magnetic separation overflow slurry, stripping the obtained third magnetic separation overflow slurry through an ultrasonic process, and screening through a screening device to obtain Fe with the granularity of 0.074-0.6mm2O3A second type of product in an amount of greater than 30ppm and less than or equal to 60 ppm.
Further, the frequency of the ultrasonic process is at least 19722Hz, and the treatment time is 10-12 min; the equipment for ball-milling the coarse sand with the granularity of more than 3.2mm in sequence is a conical ball mill, the ball loading amount of the conical ball mill is 10-11Kg, and the ball-milling time is 4.5-5 min; the first-stage magnetic separation equipment and the second-stage magnetic separation equipment for magnetically separating the third fine sand are both periodic high-gradient magnetic separators; the magnetic field intensity of the first section of magnetic separation equipment is at least 5000 multiplied by 80 A.m-1(ii) a The magnetic field intensity of the two-section magnetic separation equipment is at least 10000 multiplied by 80 A.m-1。
As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:
1. in the technical scheme, coarse sand with the granularity of more than 3.2mm in kaolin tailings is screened out, so that Fe can be greatly reduced2O3The content of the mineral is used for effectively improving the ore grinding efficiency and ensuring the quality of the concentrate after ore dressing and purification; respectively carrying out corresponding purification and classification on first coarse sand with the granularity of 0.6-3.2mm and first fine sand with the granularity of less than 0.6mm to obtain first-grade coarse sand and second-grade coarse sand as well as first-grade fine sand and second-grade fine sand, wherein Fe is contained in the components of the first-grade coarse sand and the second-grade coarse sand2O3The content of (A) is more than 60ppm and not more than 100ppm, and therefore, the sand can be used as low-iron quartz sand or sand for ultra-white glass; the first graded fine sand and the second graded fine sand have good quality, can be used as ceramic glaze or sand for glass fiber, and have higher effective utilization rate and stronger pertinence of selected minerals, thereby effectively improving the quality of prepared products.
2. The scrubbing equipment for scrubbing the first fine sand without medium is a scrubbing machine which can break up kaolin tailings in advance so as to protect the kaolin tailingsThe subsequent grading removal effect of the ore pulp is proved, and the Fe is improved to a certain extent2O3The removal degree of the fine sand effectively improves the quality of the fine sand.
3. One section magnetic separation equipment and two-stage process magnetic separation equipment all adopt periodic high gradient magnet separator, compare with conventional magnetic separation equipment, under the prerequisite of guaranteeing to reach required magnetic separation effect, can save the electric energy effectively, reduction in production cost, first fine sand and the different magnetic separation of second fine sand process twice magnetic field intensity, the magnetic separation effect is better, guarantees that the final mineral that obtains has higher purity to satisfy its application demand.
4. The first coarse sand is ball-milled by a conical ball mill, and the ball loading amount and the ball milling time are controlled to a certain extent, so that the first coarse sand particles and a ball medium rotating at a high speed can be strongly sheared and rubbed, and the material with the coarse fraction of 0.6mm-3.2mm is ball-milled to the qualified fraction.
5. Scrubbing a first class product consisting of second-grade coarse sand by a scrubbing device with a medium and then removing the medicine to obtain Fe2O3A second type product having a content of more than 30ppm and not more than 60ppm, a high yield of the second type product with respect to the raw ore, and Fe contained therein2O3The content is low, so that the kaolin sand can be used as cover plate glass or sand for photothermal glass, and the utilization rate of kaolin tailings is further improved by a simple process.
6. The second-grade coarse sand is scrubbed by the medium, so that the dip-dyed iron on the quartz surface in the second-grade coarse sand reacts with the scrubbing medium to improve the purification degree and reduce Fe in the obtained second-class product2O3To ensure that the second type of product can meet the corresponding index requirements.
7. In the process of scrubbing the second-grade coarse sand with the medium, the scrubbing strength can be improved by increasing the scrubbing rotating speed and the number of the scrubbing impellers, so that the removal effect of the dip-dyed iron on the surfaces of the kaolin and the quartz is better, and the scrubbing rotating speed and the number of the scrubbing impellers are too low, so that the second-class product cannot meet the index requirement.
8. Will be formed byThe first kind of product formed by the second grading coarse sand is depots after deep purification, and Fe can be obtained2O3A third type product with a content of less than or equal to 30ppm, a higher yield of the third type product with respect to the raw ore, and containing Fe2O3The content can reach an extremely low degree, so the obtained third product can be used as raw material sand for products with higher requirements on quality, such as optical glass, solar light guide plate glass and the like, thereby further improving the utilization rate of kaolin tailings and avoiding the waste of resources due to the excessive production of single products.
9. When the second-grade coarse sand is subjected to deep purification, the longer the deep purification time is, and the Fe in the third-class product is obtained2O3The lower the content of (A), however, the longer the time for deep purification, the higher the production cost.
10. The second magnetic separation overflow slurry after the third fine sand is subjected to magnetic separation is stripped through an ultrasonic process, so that a product with a fine particle size can be obtained, and kaolin and dip-dyed iron on the surface of stripped quartz particles can be removed, so that Fe with the particle size of 0.074-0.6mm can be directly obtained by the third fine sand after the first-stage magnetic separation, the second-stage magnetic separation and the classification through the ultrasonic process2O3The content of the second product is more than 30ppm and less than or equal to 60ppm, the process is simple, and the purification effect is good.
11. The longer the ultrasonic treatment time is, the better the kaolin stripping and iron dip dyeing effects are, and the treatment time process is not favorable for controlling the production cost.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the described embodiments are presently preferred embodiments of the invention and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the claims and the specification of the present invention, unless otherwise specifically limited, the terms "first", "second", or "third", etc., are used for distinguishing between different objects and not for describing a particular order.
In the claims and specification of the present invention, the terms "including", "comprising" and "having", and variations thereof, are intended to be inclusive or non-exclusive.
The kaolin tailing comprehensive utilization treatment process provided by the embodiment of the invention takes the kaolin tailing as raw ore and comprises the following specific implementation steps:
preparation of the first type of product:
1) screening coarse sand with the granularity of more than 3.2mm by a screen mesh to obtain fine sand with the undersize granularity of less than or equal to 3.2 mm; sieving fine sand with the granularity of less than or equal to 3.2mm by a sieve to obtain first coarse sand with the granularity of 0.6-3.2mm on the sieve and first fine sand with the granularity of less than 0.6mm below the sieve; performing medium-free scrubbing on the first fine sand with the granularity of less than 0.6mm by using a scrubbing machine, wherein the concentration of ore pulp during scrubbing is 50-60%, and the scrubbing time is 5-6 min; then, sequentially carrying out magnetic separation on the scrubbed slurry through a first-stage magnetic separation device and a second-stage magnetic separation device in sequence to finally obtain first magnetic separation overflow slurry, grading the first magnetic separation overflow slurry through a grading device to obtain first graded coarse sand with the granularity of 0.1-0.6mm and first graded fine sand with the granularity of less than 0.1mm, wherein the obtained first graded coarse sand with the granularity of 0.1-0.6mm is Fe2O3A first product in an amount of greater than 60ppm and less than or equal to 100 ppm;
wherein, the first-stage magnetic separation equipment and the second-stage magnetic separation equipment are SSS-I type periodic high gradient magnetic separators, and the magnetic field intensity of the first-stage magnetic separation equipment is at least 5000 multiplied by 80 A.m-1(ii) a The magnetic field intensity of the two-stage magnetic separation equipment is at least 10000 multiplied by 80 A.m-1(ii) a The grading equipment is a phi 125 hydraulic classifier, and the rising water quantity is 200 L.h-1。
2) Sequentially ball-milling and screening the obtained first coarse sand with the granularity of 0.6-3.2mm to obtain second fine sand with the granularity of less than or equal to 0.6mm, sequentially performing magnetic separation on the second fine sand by a first-stage magnetic separation device and a second-stage magnetic separation device to finally obtain second magnetic separation overflow slurry, and performing classification on the obtained second magnetic separation overflow slurry by a classification deviceGrading and obtaining second-grade coarse sand with the granularity of 0.1-0.6mm and second-grade fine sand with the granularity of less than 0.1 mm; the obtained second-grade coarse sand with the granularity of 0.1-0.6mm is Fe2O3Is greater than 60ppm and less than or equal to 100 ppm.
Wherein, the ball milling equipment is an XMQ-phi 240 multiplied by 90 conical ball mill, the ball loading is 10 to 11Kg, the ball milling time is 4.5 to 5min, and the ball ratio (big: medium: small) is 5:4: 1; the first-stage magnetic separation equipment and the second-stage magnetic separation equipment are SSS-I type periodic high-gradient magnetic separators, and the magnetic field intensity of the first-stage magnetic separation equipment is at least 5000 multiplied by 80 A.m-1(ii) a The magnetic field intensity of the two-stage magnetic separation equipment is at least 10000 multiplied by 80 A.m-1(ii) a The grading equipment is a phi 125 hydraulic classifier, and the rising water quantity is 200 L.h-1。
The obtained first product is used as low-iron quartz sand or sand for ultra-white glass, wherein the yield of the first product formed by the first grading coarse sand relative to raw ore is 47.73-47.99%, and the first product contains 99.16-99.28% of SiO20.28-0.29% of Al2O3And 0.009-0.0095% Fe2O3(ii) a The first type of product consisting of the second classified grit has a yield of 32.19 to 32.68% relative to the raw ore and contains 99.2 to 99.59% of SiO20.22-0.32% of Al2O3And 0.0085-0.0090% Fe2O3。
The first graded fine sand and the second graded fine sand can be used as ceramic glaze or sand for glass fiber; wherein the yield of the first-grade fine sand relative to the raw ore is 1.03-1.26%, and the first-grade fine sand contains 96.36-96.48% of SiO20.68-0.71% of Al2O3And 0.012-0.016% Fe2O3(ii) a The yield of the second-grade fine sand relative to the raw ore is 3.93-4.15%, and the second-grade fine sand contains 99.38-96.5% of SiO20.23-0.26% of Al2O3And 0.026- -0.029% Fe2O3。
Preparation of a second type of product:
1) scrubbing the first product composed of the second graded coarse sand with medium by scrubbing equipment, and removing the medicine to obtain the final productFe2O3A second type of product in an amount of greater than 30ppm and less than or equal to 60 ppm.
When the single-layer impeller is adopted as the scrubbing equipment, a catcher HK-1 or HK-2 is added to carry out acid flotation in the scrubbing procedure of the second-level coarse sand.
Preferably, in this embodiment, the scrubbing device for performing media scrubbing is a double-impeller scrub; the added medium is sulfuric acid, and the dosage of the sulfuric acid is 54.5-55.5 Kg.t-1The scrubbing time is 18-22 min; the scrubbing rotation speed is 1800 plus 2000 r.min-1(ii) a The concentration of the ore pulp during scrubbing is 50-60%, and the scrubbing time is 18-22 min.
The obtained second product is used as cover glass or sand for photothermal glass, and has a yield of 30.54-30.62% relative to raw ore and contains 99.53-99.75% of SiO20.084-0.088% of Al2O3And 0.0049-0.0052% Fe2O3。
2) Sequentially ball-milling and screening the coarse sand with the granularity of more than 3.2mm to obtain third fine sand with the granularity of less than or equal to 0.6mm, sequentially performing magnetic separation on the third fine sand by a first-stage magnetic separation device and a second-stage magnetic separation device to finally obtain third magnetic separation overflow slurry, stripping the obtained third magnetic separation overflow slurry by an ultrasonic process, and screening by a screening device to obtain Fe with the granularity of 0.074-0.6mm2O3A second type of product in an amount of greater than 30ppm and less than or equal to 60 ppm.
Wherein the frequency of the ultrasonic process is at least 19722Hz, and the processing time is 10-12 min; the equipment for sequentially ball-milling the coarse sand with the granularity of more than 3.2mm is an XMQ-phi 240X 90 conical ball mill, the ball loading amount is 10-11Kg, the ball milling time is 4.5-5min, and the ball ratio (large: medium: small) is 5:4: 1; the first-stage magnetic separation equipment and the second-stage magnetic separation equipment are SSS-I type periodic high-gradient magnetic separators, and the magnetic field intensity of the first-stage magnetic separation equipment is at least 5000 multiplied by 80 A.m-1(ii) a The magnetic field intensity of the two-stage magnetic separation equipment is at least 10000 multiplied by 80 A.m-1(ii) a The grading equipment is phi 125 hydraulic powerStage machine with water lifting amount of 200 L.h-1。
Preparation of a third type of product:
deeply purifying the first-class product consisting of the second-grade coarse sand, and then removing the medicine to obtain Fe2O3A third type of product having a content of 30ppm or less.
Wherein, the concentration of the ore pulp when the second-grade coarse sand is deeply purified is 48-50 percent, the purifying medium is sulfuric acid, and the dosage of the sulfuric acid is 500 Kg.t-1The time for deep purification is more than 1.5 h.
The obtained third product can be used as sand for optical glass and solar light guide plate glass, has a yield of 31.96-32.06% relative to raw ore, and contains more than 99.9% of SiO20.076-0.087% of Al2O3And 0.0025 to 0.0027% Fe2O3。
The present invention will be described in further detail with reference to the following examples and comparative examples, which are given for the purpose of illustration and are not intended to limit the scope of the present invention.
Example 1
Screening coarse sand with the granularity of more than 3.2mm by a screen mesh to obtain fine sand with the undersize granularity of less than or equal to 3.2 mm; sieving fine sand with the granularity of less than or equal to 3.2mm by a sieve to obtain first coarse sand with the granularity of 0.6-3.2mm on the sieve and first fine sand with the granularity of less than 0.6mm below the sieve; performing medium-free scrubbing on the first fine sand with the granularity of less than 0.6mm by using a scrubbing machine, wherein the concentration of ore pulp in the scrubbing process is 50%, and the scrubbing time is 5 min; the slurry after scrubbing is sequentially passed through a magnetic field intensity of 5000 × 80A · m-1SSS-I type periodic high gradient magnetic separator and magnetic field intensity of 10000 multiplied by 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain first magnetic separation overflow slurry, and classifying the first magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1，So as to obtain a first type of product with the granularity of 0.1-0.6mm and first graded fine sand with the granularity of less than 0.1 mm; the obtained first product sample is numbered XMC-11, the chemical composition of whichThe results of the analyses are shown in Table 1; the chemical composition analysis results of the first-stage magnetic separation tailings and the second-stage magnetic separation tailings are shown in table 2.
Chemical composition analysis of magnetic separation concentrates of samples of Table 1-0.6mm
TABLE 2-0.6 mm sample analysis of chemical composition of magnetic separation tailings
Therefore, the index of the magnetic separation tailings in the first section is poor, and the magnetic separation tailings can be considered to be used for building backfill so as to reduce the tailings treatment cost; the two-stage magnetic separation tailings have good quality and can meet the requirements of the siliceous raw materials for common float glass.
Example 2
Screening coarse sand with the granularity of more than 3.2mm by a screen mesh to obtain fine sand with the undersize granularity of less than or equal to 3.2 mm; sieving fine sand with the granularity of less than or equal to 3.2mm by a sieve to obtain first coarse sand with the granularity of 0.6-3.2mm on the sieve and first fine sand with the granularity of less than 0.6mm below the sieve; performing medium-free scrubbing on the first fine sand with the granularity of less than 0.6mm by using a scrubbing machine, wherein the concentration of ore pulp during scrubbing is 60%, and the scrubbing time is 6 min; the slurry after scrubbing is sequentially passed through a magnetic field intensity of 5000 × 80A · m-1SSS-I type periodic high gradient magnetic separator and magnetic field intensity of 10000 multiplied by 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain first magnetic separation overflow slurry, and classifying the first magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1To obtain a first type of product with the granularity of 0.1-0.6mm and first graded fine sand with the granularity of less than 0.1 mm; the first product sample obtained was numbered XMC-12.
Example 3
Passing the obtained first grit with a particle size of 0.6-3.2mm through XMQ-phi 240X 90 conical spheresBall milling by a mill, wherein the ball loading is 11Kg, the ball milling time is 4.5min, and the ball ratio (large: medium: small) is 5:4: 1; sieving with a sieve to obtain second fine sand with particle size of 0.6mm or less, and sequentially passing the second fine sand through magnetic field strength of 5000 × 80A · m-1SSS-I type periodic high gradient magnetic separator and magnetic field intensity of 10000 multiplied by 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain second magnetic separation overflow slurry, and grading the second magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1So as to obtain a first class of products with the granularity of 0.1-0.6mm and second graded fine sand with the granularity of less than 0.1 mm; the obtained first product sample is numbered XMC-13, and the chemical component analysis result is shown in Table 3; the results of analyzing the chemical components of the first-stage magnetic separation tailings and the second-stage magnetic separation tailings are shown in table 4.
Chemical composition analysis of magnetic separation concentrates of samples 3-3.2-0.6 mm in table
Chemical composition analysis of magnetic separation tailings of samples with sizes of 4-3.2-0.6 mm in table
Therefore, the index of the magnetic separation tailings in the first section is poor, and the magnetic separation tailings can be considered to be used for building backfill so as to reduce the tailings treatment cost; the two-stage magnetic separation tailings have good quality and can meet the requirements of the sand for common float glass or the silica powder raw material for low-grade ceramic glaze.
Example 4
Ball-milling the obtained first coarse sand with the granularity of 0.6-3.2mm by an XMQ-phi 240X 90 conical ball mill, wherein the ball loading is 10Kg, the ball-milling time is 5min, and the ball ratio (large: medium: small) is 5:4: 1; sieving with a sieve to obtain second fine sand with particle size of 0.6mm or less, and sequentially passing the second fine sand through magnetic field strength of 5000 × 80A · m-1SSS-I type periodic high gradient magnetic separator and magnetic field intensity of 10000 multiplied by 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain second magnetic separation overflow slurry, and grading the second magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1So as to obtain a first class of products with the granularity of 0.1-0.6mm and second graded fine sand with the granularity of less than 0.1 mm; the first type of product sample obtained was numbered XMC-14.
Example 5
Scrubbing the first product composed of the second graded coarse sand with a scrubbing machine with a double-layer impeller by using a medium, wherein the scrubbing medium is sulfuric acid, and the dosage of the sulfuric acid is 55.2 Kg.t-1The scrubbing time is 20 min; the scrubbing rotation speed is 2000 r.min-1(ii) a The concentration of the ore pulp in scrubbing is 50%; scrubbing, removing liquid medicine (sulfuric acid) to obtain Fe2O3A second type of product having a content of more than 30ppm and not more than 60 ppm; the second type product obtained was designated as XMC-21, and the results of chemical component analysis thereof are shown in Table 5.
Chemical composition analysis of scrub-washed concentrate of samples of 5-3.2-0.6 mm in Table
Example 6
Scrubbing a first product composed of second-grade coarse sand with a scrubbing machine with a double-layer impeller by using a medium, wherein the scrubbing medium is sulfuric acid, and the dosage of the sulfuric acid is 55 Kg.t-1The scrubbing time is 22 min; the scrubbing rotation speed is 1800 r.min-1(ii) a The concentration of the ore pulp during scrubbing is 60%, and the scrubbing time is 30 min; scrubbing, removing liquid medicine (sulfuric acid) to obtain Fe2O3A second type of product having a content of more than 30ppm and not more than 60 ppm; the obtained second type product sample is numbered XMC-22.
Example 7
The coarse sand with the granularity of more than 3.2mm is milled by an XMQ-phi 240 multiplied by 90 conical ball mill and then is loaded11Kg, ball milling time of 4.5min, ball ratio (big: medium: small) of 5:4: 1; sieving with a sieve to obtain third fine sand with particle size of 0.6mm or less, and sequentially passing the third fine sand with magnetic field strength of 5000 × 80A · m-1SSS-I type periodic high gradient magnetic separator and magnetic field intensity of 10000 multiplied by 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain third magnetic separation overflow slurry, stripping the obtained third magnetic separation overflow slurry by an ultrasonic process, wherein the frequency of the ultrasonic process is at least 19722Hz, the treatment time is 12min, and then sieving by a screen to obtain Fe with the granularity of 0.074-0.6mm2O3A second type of product having a content of more than 30ppm and not more than 60 ppm; the obtained second type product sample was numbered XMC-23.
Example 8
The first class product formed by the second grading coarse sand is deeply purified by adding medium sulfuric acid, and then the Fe is obtained after the liquid medicine (sulfuric acid) is removed2O3The third kind product with the content less than or equal to 30ppm has the ore pulp concentration of 50 percent and the dosage of the sulfuric acid of 500 Kg.t-1The deep purification time is 1.5 h; the third type product obtained was designated as XMC-31 and the chemical composition analysis thereof is shown in Table 6.
Chemical composition analysis of deeply purified fine sand of samples of 6-3.2-0.6 mm in Table
Example 9
The first class product formed by the second grading coarse sand is deeply purified by adding medium sulfuric acid, and then the Fe is obtained after the liquid medicine (sulfuric acid) is removed2O3The third kind product with the content less than or equal to 30ppm has the ore pulp concentration of 48 percent and the dosage of the sulfuric acid of 520 Kg.t-1The deep purification time is 2 hours; the obtained third product sample is numbered XMC-32.
The chemical index results of the various types of products obtained in the above examples are shown in table 7:
chemical index results of each product after beneficiation of samples of 7-3.2-0.6 mm and-0.6 mm in table
Comparative example 1
Ball-milling the full-size kaolin tailings by an XMQ-phi 240X 90 conical ball mill, wherein the ball loading is 10Kg, the ball milling time is 5min, and the ball ratio (large: medium: small) is 5:4: 1; sieving with a sieve to obtain fourth fine sand with particle size of 0.6mm or less, and sequentially passing the fourth fine sand with magnetic field strength of 5000 × 80A · m-1SSS-I type periodic high gradient magnetic separator and magnetic field intensity of 10000X 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain first magnetic separation overflow slurry, and grading the obtained second magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1So as to obtain third grade coarse sand with the granularity of 0.1-0.6mm and third grade fine sand with the granularity of less than 0.1 mm.
Scrubbing the third graded coarse sand with a scrubbing machine with a double-layer impeller by using a medium, wherein the scrubbing medium is sulfuric acid, and the dosage of the sulfuric acid is 73.6 Kg.t-1The scrubbing time is 30 min; the scrubbing rotation speed is 2000 r.min-1(ii) a The concentration of the ore pulp during scrubbing is 50%, and the scrubbing time is 28 min; and removing the liquid medicine (sulfuric acid) after scrubbing to obtain a full-size magnetic separation product which is numbered as XMC-1'.
Comparative example 2
Screening coarse sand with the granularity of more than 3.2mm by a screen mesh to obtain fine sand with the undersize granularity of less than or equal to 3.2 mm; sieving fine sand with the granularity of less than or equal to 3.2mm by a sieve to obtain first coarse sand with the granularity of 0.6-3.2mm on the sieve and first fine sand with the granularity of less than 0.6mm below the sieve; performing medium-free scrubbing on the first fine sand with the granularity of less than 0.6mm by using a scrubbing machine, wherein the concentration of ore pulp in the scrubbing process is 50%, and the scrubbing time is 10 min; the slurry after scrubbing is sequentially processed by magnetic field intensity5000×80A·m-1SSS-I type periodic high gradient magnetic separator and magnetic field intensity of 10000 multiplied by 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain first magnetic separation overflow slurry, and classifying the first magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1，So as to obtain a first type of product with the granularity of 0.1-0.6mm and first graded fine sand with the granularity of less than 0.1 mm; the first type of product sample obtained was numbered XMC-2'.
Comparative example 3
Ball-milling the obtained first coarse sand with the granularity of 0.6-3.2mm by an XMQ-phi 240X 90 conical ball mill, wherein the ball loading is 10Kg, the ball-milling time is 5min, and the ball ratio (large: medium: small) is 5:4: 1; sieving with a sieve to obtain second fine sand with particle size of 0.6mm or less, and passing the second fine sand through magnetic field with intensity of 5000 × 80A · m-1Carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain second magnetic separation overflow slurry, and grading the second magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1And obtaining a first product with the granularity of 0.1-0.6mm and a second graded fine sand with the granularity of less than 0.1mm, wherein the obtained first product is XMC-3'.
Comparative example 4
Ball-milling the obtained first coarse sand with the granularity of 0.6-3.2mm by an XMQ-phi 240X 90 conical ball mill, wherein the ball loading is 10Kg, the ball-milling time is 5min, and the ball ratio (large: medium: small) is 5:4: 1; sieving with a sieve to obtain second fine sand with particle size of 0.6mm or less, and sequentially passing the second fine sand through magnetic field strength of 5000 × 80A · m-1The SSS-I type periodic high-gradient magnetic separator has the magnetic field intensity of 12000 multiplied by 80 A.m-1Sequentially carrying out magnetic separation by an SSS-I type periodic high-gradient magnetic separator to finally obtain second magnetic separation overflow slurry, and grading the second magnetic separation overflow slurry by a phi 125 hydraulic classifier, wherein the water rising amount of the phi 125 hydraulic classifier is 200 L.h-1To obtain a first class of product with a particle size of 0.1-0.6mm and a second graded fine sand with a particle size of less than 0.1mmThe first type of product sample of (1) is XMC-4'.
Comparative example 5
Scrubbing the first product composed of the second graded coarse sand with a scrubbing machine with a double-layer impeller by using a medium, wherein the scrubbing medium is sulfuric acid, and the dosage of the sulfuric acid is 73.6 Kg.t-1The scrubbing time is 20 min; the scrubbing rotation speed is 2000 r.min-1(ii) a The concentration of the ore pulp in scrubbing is 50%; scrubbing, removing liquid medicine (sulfuric acid) to obtain Fe2O3Is greater than 30ppm and less than or equal to 60ppm, and the obtained first product sample number is XMC-5'.
Comparative example 6
The first class product formed by the second grading coarse sand is deeply purified by adding medium sulfuric acid, and then the Fe is obtained after the liquid medicine (sulfuric acid) is removed2O3The third kind product with the content less than or equal to 30ppm has the ore pulp concentration of 50 percent and the dosage of the sulfuric acid of 500 Kg.t-1The deep purification time is 1 h; the third type of product sample obtained was numbered XMC-6'.
The chemical index results of the various types of products obtained in the above examples are shown in table 8:
table 8 results of chemical indexes of each product after beneficiation of comparative example
From the observation of the results of the chemical indexes in tables 7 and 8, it can be seen from the comparison of comparative example 1, example 5 and example 6 that, under the same conditions, when the kaolin tailing of the whole size fraction is directly used for mineral separation, the second type of product is difficult to obtain due to the fact that Fe in the mineral particles of the +3.2mm size fraction in the raw ore of the kaolin tailing of the whole size fraction2O3The content of (2) is high, the sample quality is poor, and the hardness of the variegated minerals is high, so that the ore grinding efficiency is influenced.
As is clear from comparison of comparative example 2 and example 1, the prolongation of the scouring treatment time is effective for reducing Fe in the concentrate2O3The content effect of the (B) is not great, so the index requirement and the beneficiation cost are comprehensively considered, and the scrubbing time is only 5-6 min.
From the comparison between comparative example 3 and example 4, it can be seen that the magnetic separation operation is effective for reducing Fe in the concentrate2O3The content of (A) has an obvious effect.
As can be seen from comparison between comparative example 4 and example 4, when the magnetic field intensity of the two-stage magnetic separation exceeds 10000X 80 A.m-1While, with the increase of the magnetic field intensity, Fe of the obtained concentrate2O3The content of (b) is decreased.
As can be seen by comparing comparative example 5 with example 5, the amount of scouring media used exceeds 55.2 Kg. t under the same scouring conditions-1During the process, the concentration of hydrogen ions is gradually increased along with the continuous increase of the consumption of the scrubbing medium, so that the reaction capability of quartz surface dip-dyed iron and the acid scrubbing medium is promoted, and Fe in the concentrate sand2O3The content of (A) is gradually reduced, but the reduction effect is not obvious, so that the dosage of the scouring medium is preferably 55-55.2Kg & t by comprehensively considering the index requirement and the beneficiation cost-1。
As is clear from comparison of comparative example 6 and example 8, the extension of the deep purification time further reduces Fe in the concentrate2O3The content of (A) has a certain effect.
By combining the above analysis, the technical scheme disclosed by the invention solves all the technical problems listed in the specification, and realizes the corresponding technical effects.
The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the invention or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the invention.
Claims (14)
1. A process for comprehensively utilizing kaolin tailings is characterized by comprising the following steps: taking kaolin tailings as raw ore, and screening coarse sand with the granularity of more than 3.2mm to obtain fine sand with the granularity of less than or equal to 3.2 mm; screening the fine sand with the granularity of less than or equal to 3.2mm to respectively obtain first coarse sand with the granularity of 0.6-3.2mm and first fine sand with the granularity of less than 0.6 mm;
subjecting first fine sand with the particle size of less than 0.6mm to medium-free scrubbing by scrubbing equipment, sequentially subjecting the first fine sand to sequential magnetic separation by first-stage magnetic separation equipment and second-stage magnetic separation equipment to finally obtain first magnetic separation overflow slurry, grading the first magnetic separation overflow slurry by grading equipment to obtain first graded coarse sand with the particle size of 0.1-0.6mm and first graded fine sand with the particle size of less than 0.1mm, wherein the obtained first graded coarse sand with the particle size of 0.1-0.6mm is Fe2O3A first product in an amount of greater than 60ppm and less than or equal to 100 ppm;
sequentially carrying out ball milling and screening on the obtained first coarse sand with the granularity of 0.6-3.2mm to obtain second fine sand with the granularity of less than or equal to 0.6mm, sequentially carrying out magnetic separation on the second fine sand through a first-stage magnetic separation device and a second-stage magnetic separation device to finally obtain second magnetic separation overflow slurry, and grading the obtained second magnetic separation overflow slurry through a grading device to obtain second graded coarse sand with the granularity of 0.1-0.6mm and second graded fine sand with the granularity of less than 0.1 mm; the obtained second-grade coarse sand with the granularity of 0.1-0.6mm is Fe2O3Is greater than 60ppm and less than or equal to 100 ppm.
2. The process of claim 1, wherein the process comprises the following steps: the first product is used as low-iron quartz sand or sand for ultra-white glass, wherein the yield of the first product formed by the first grading coarse sand relative to raw ore is 47.73-47.99%, and the first product contains 99.16-99.28% of SiO20.28-0.29% of Al2O3And 0.009-0.0095% Fe2O3(ii) a The first type of product consisting of the second classified grit has a yield of 32.19 to 32.68% relative to the raw ore and contains 99.2 to 99.59% of SiO20.22-0.32% of Al2O3And 0.0085-0.0090% Fe2O3。
3. The comprehensive utilization treatment process for the kaolin tailings as claimed in claim 1 or 2, which is characterized in that: the first graded fine sand and the second graded fine sand are used as ceramic glaze or sand for glass fiber; wherein the yield of the first-grade fine sand relative to the raw ore is 1.03-1.26%, and the first-grade fine sand contains 96.36-96.48% of SiO20.68-0.71% of Al2O3And 0.012-0.016% Fe2O3(ii) a The yield of the second-grade fine sand relative to the raw ore is 3.93-4.15%, and the second-grade fine sand contains 99.38-96.5% of SiO20.23-0.26% of Al2O3And 0.026-0.029% Fe2O3。
4. The process of claim 1, wherein the process comprises the following steps: the scouring equipment is a scouring machine, the concentration of ore pulp in the scouring process is 50-60%, and the scouring time is 5-6 min.
5. The process of claim 1, wherein the process comprises the following steps: the first-stage magnetic separation equipment and the second-stage magnetic separation equipment for carrying out magnetic separation on the first fine sand and the second fine sand are both periodic high-gradient magnetic separators; the magnetic field intensity of the two sections of magnetic separation equipment is at least 5000 multiplied by 80 A.m-1(ii) a The magnetic field intensity of the two sections of magnetic separation equipment is at least 10000 multiplied by 80 A.m-1。
6. The process of claim 1, wherein the process comprises the following steps: and ball-milling the first coarse sand with the granularity of 0.6-3.2mm by adopting a conical ball mill, wherein the ball loading amount is 10-11Kg, and the ball-milling time is 4.5-5 min.
7. The process of claim 1, wherein the process comprises the following steps: subjecting the first product composed of the second graded coarse sand to medium scrubbing by scrubbing equipment and removing the medicine to obtainFe2O3A second type of product in an amount of greater than 30ppm and less than or equal to 60 ppm.
8. The process of claim 7, wherein the process comprises the following steps: the second product is used as cover glass or sand for photothermal glass, the yield of the second product relative to raw ore is 30.54-30.62%, and the second product contains 99.53-99.75% of SiO20.084-0.088% of Al2O3And 0.0049-0.0052% Fe2O3。
9. The comprehensive utilization treatment process for kaolin tailings as set forth in claim 7 or 8, which is characterized in that: the scrubbing equipment for scrubbing with media is double-layer impeller scrubbing; the added medium is sulfuric acid, and the dosage of the sulfuric acid is 54.5-55.5 Kg.t-1The scrubbing time is 18-22 min; the scrubbing rotation speed is 1800 plus 2000 r.min-1(ii) a The concentration of the ore pulp during scrubbing is 50-60%.
10. The process of claim 1, wherein the process comprises the following steps: deeply purifying the first-class product consisting of the second-grade coarse sand, and then removing the medicine to obtain Fe2O3A third type of product having a content of 30ppm or less.
11. The process of claim 10, wherein the process comprises the following steps: the third product is used as sand for optical glass and solar light guide plate glass, the yield of the third product relative to raw ore is 31.96-32.06%, and the third product contains more than 99.9% of SiO20.076-0.087% of Al2O3And 0.0025 to 0.0027% Fe2O3。
12. The process of claim 10, wherein the process comprises the following steps: the ore pulp concentration of the second-grade coarse sand during deep purification is 48-50%, the purification medium is sulfuric acid, and the dosage of the sulfuric acid isIs 500 Kg.t-1The time for deep purification is more than 1.5 h.
13. The process of claim 1, wherein the process comprises the following steps: sequentially ball-milling and screening the coarse sand with the granularity of more than 3.2mm to obtain third fine sand with the granularity of less than or equal to 0.6mm, sequentially performing magnetic separation on the third fine sand by a first-stage magnetic separation device and a second-stage magnetic separation device to finally obtain third magnetic separation overflow slurry, stripping the obtained third magnetic separation overflow slurry by an ultrasonic process, and screening by a screening device to obtain Fe with the granularity of 0.074-0.6mm2O3A second type of product in an amount of greater than 30ppm and less than or equal to 60 ppm.
14. The process of claim 13, wherein the process comprises the following steps: the frequency of the ultrasonic process is at least 19722Hz, and the processing time is 10-12 min; the equipment for ball-milling the coarse sand with the granularity of more than 3.2mm in sequence is a conical ball mill, the ball loading amount of the conical ball mill is 10-11Kg, and the ball-milling time is 4.5-5 min; the first-stage magnetic separation equipment and the second-stage magnetic separation equipment for magnetically separating the third fine sand are both periodic high-gradient magnetic separators; the magnetic field intensity of the first section of magnetic separation equipment is at least 5000 multiplied by 80 A.m-1(ii) a The magnetic field intensity of the two-section magnetic separation equipment is at least 10000 multiplied by 80 A.m-1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080953.6A CN109772578B (en) | 2019-01-28 | 2019-01-28 | Treatment process for comprehensive utilization of kaolin tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080953.6A CN109772578B (en) | 2019-01-28 | 2019-01-28 | Treatment process for comprehensive utilization of kaolin tailings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109772578A CN109772578A (en) | 2019-05-21 |
| CN109772578B true CN109772578B (en) | 2021-05-07 |
Family
ID=66502646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910080953.6A Active CN109772578B (en) | 2019-01-28 | 2019-01-28 | Treatment process for comprehensive utilization of kaolin tailings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109772578B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201791B (en) * | 2019-06-06 | 2021-03-12 | 山东华特磁电科技股份有限公司 | Comprehensive utilization method of sandy kaolin tailings containing tourmaline, muscovite and quartz sand |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5522924A (en) * | 1995-03-17 | 1996-06-04 | Ecc International Inc. | Method for producing high brightness low abrasion calcined kaolin pigment |
| CN100571877C (en) * | 2006-01-25 | 2009-12-23 | 中国长城铝业公司 | High-iron bauxite ferro-aluminum comprehensive utilization of separation method |
| CN101126125A (en) * | 2007-07-12 | 2008-02-20 | 中国铝业股份有限公司 | Comprehensive utilization method for bauxite dressing tailings |
| CN102357400A (en) * | 2011-07-29 | 2012-02-22 | 合浦沪天高岭土有限责任公司 | Method for processing low-grade kaolinite ore |
| CN107042154A (en) * | 2017-06-15 | 2017-08-15 | 长沙矿冶研究院有限责任公司 | A kind of wet method processing technology of sandy kaoline |
| CN107511251B (en) * | 2017-09-08 | 2019-07-19 | 蚌埠玻璃工业设计研究院 | A method of recycling mica and feldspar and quartz sand from Kaolin Tailings |
| CN108238781B (en) * | 2018-02-01 | 2020-10-13 | 厦门欣意盛新材料科技有限公司 | Method for removing iron from kaolin |
-
2019
- 2019-01-28 CN CN201910080953.6A patent/CN109772578B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109772578A (en) | 2019-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101870474B (en) | Method for preparing quartz sand concentrate by mineral separation of desert aeolian sand | |
| CN109046746A (en) | Low-grade quartz sand purifying technique | |
| CN110201791B (en) | Comprehensive utilization method of sandy kaolin tailings containing tourmaline, muscovite and quartz sand | |
| CN101885489B (en) | Method for preparing feldspar powder concentrate by mineral separation of aeolian sand in desert | |
| CN111921695B (en) | Method for comprehensively recovering multiple valuable minerals in bauxite | |
| CN109894256B (en) | Iron-extracting impurity-reducing mineral separation method for low-grade iron ore powder | |
| Liu et al. | Removing iron by magnetic separation from a potash feldspar ore | |
| CN109772578B (en) | Treatment process for comprehensive utilization of kaolin tailings | |
| CN109248778A (en) | Rectorite removal of impurities purification ore-dressing technique, ore-sorting system, rectorite concentrate and its application | |
| CN110526578A (en) | A method of photovoltaic glass silica sand is produced using quartzy glutenite | |
| CN105057088A (en) | Method for recycling quartz and feldspar mixtures from gold flotation tailings | |
| CN110976069A (en) | Harmless purification method of deep sea phase sedimentary type quartz sand | |
| CN1522957A (en) | Production method for ultra-fine silicon micronized quartz powder | |
| CN107127046A (en) | A kind of rutile chats comprehensive utilization process | |
| KR100857725B1 (en) | Purification method for limestone | |
| CN105127003A (en) | Method for recycling single quartz and feldspar from gold flotation tailings | |
| CN105944826B (en) | A method of enrichment ilmenite | |
| CN105964401B (en) | Mineral separation process for high-iron nepheline ore | |
| CN114849903A (en) | Mineral separation process for efficiently extracting silica micropowder from quartz tailing powder | |
| CN102773149A (en) | Dressing and purification method of powder quartz | |
| CN115301400B (en) | System and method for beneficiation of ultrafine ilmenite | |
| CN111644265B (en) | Process for recycling sericite from gold tailings | |
| CN114588998B (en) | Comprehensive utilization method of peganite containing tantalum-niobium, cassiterite, feldspar and spodumene | |
| CN112871434B (en) | Method for sorting nano sepiolite | |
| JP4096097B2 (en) | How to remove chlorine in red mud |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 361100 First Floor Workshop, No. 681 Xinmin Avenue, Tong'an District, Xiamen City, Fujian Province Applicant after: Xiamen xinyisheng New Material Technology Co.,Ltd. Address before: 361100 First Floor Workshop, No. 681 Xinmin Avenue, Tong'an District, Xiamen City, Fujian Province Applicant before: XIAMEN XINYISHENG NONMETAL MATERIAL SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A comprehensive utilization and treatment process of Kaolin Tailings Effective date of registration: 20220328 Granted publication date: 20210507 Pledgee: Xiamen SME Financing Guarantee Co.,Ltd. Pledgor: Xiamen xinyisheng New Material Technology Co.,Ltd. Registration number: Y2022110000068 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 361000 workshop, 1st floor, No.1, 681 Xinmin Avenue, Tong'an District, Xiamen City, Fujian Province Patentee after: Xiamen Xinyisheng New Material Technology Co.,Ltd. Address before: 361100 Workshop on the first floor, No. 1, No. 681, Xinmin Avenue, Tong'an District, Xiamen City, Fujian Province Patentee before: Xiamen xinyisheng New Material Technology Co.,Ltd. |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230512 Granted publication date: 20210507 Pledgee: Xiamen SME Financing Guarantee Co.,Ltd. Pledgor: Xiamen xinyisheng New Material Technology Co.,Ltd. Registration number: Y2022110000068 |