CN107311189A - Mixed attapulgite and wet purification method thereof - Google Patents
Mixed attapulgite and wet purification method thereof Download PDFInfo
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- CN107311189A CN107311189A CN201710469131.8A CN201710469131A CN107311189A CN 107311189 A CN107311189 A CN 107311189A CN 201710469131 A CN201710469131 A CN 201710469131A CN 107311189 A CN107311189 A CN 107311189A
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- attapulgite
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 229960000892 attapulgite Drugs 0.000 title claims abstract description 33
- 229910052625 palygorskite Inorganic materials 0.000 title claims abstract description 33
- 238000000746 purification Methods 0.000 title claims abstract description 29
- 239000004927 clay Substances 0.000 claims abstract description 56
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 48
- 230000018044 dehydration Effects 0.000 claims description 31
- 238000006297 dehydration reaction Methods 0.000 claims description 31
- 102000002322 Egg Proteins Human genes 0.000 claims description 30
- 108010000912 Egg Proteins Proteins 0.000 claims description 30
- 210000003278 egg shell Anatomy 0.000 claims description 30
- 239000002002 slurry Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000012634 fragment Substances 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 15
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 13
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 13
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 13
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 238000007873 sieving Methods 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000002734 clay mineral Substances 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000003672 processing method Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000012364 cultivation method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Materials Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Dispersion Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
The invention relates to the technical field of wet separation of nonmetallic minerals, in particular to a mixed attapulgite and a wet purification method thereof. Aiming at the defects of low dispersion efficiency, poor natural settling separation or screening purification effect and long operation time in the existing purification method of the attapulgite clay minerals, the invention provides a purification and processing method suitable for large-scale industrial production of attapulgite clay. The method is particularly suitable for the purification process of the attapulgite clay ore with the kansu Linze and the guining, the scale of the kansu attapulgite is large, the reserve volume is large, but the overall grade of the ore is lower than that of the attapulgite ore produced in Su Wan area, the mass fraction is about 20-30%, the purification difficulty is high, and the yield of the common purification process is low. The scheme can effectively improve the purification rate of the attapulgite clay ore in Su Ling and Hui Ning.
Description
Technical field
The present invention relates to the wet separation technical field of nonmetallic mineral, and in particular to a kind of Mixed Concave convex rod and its wet method
Method of purification.
Background technology
Concave-convex clay rod (referred to as recessed soil) is the clay mineral of zeopan containing Shuifu County of a kind of layer of chain structure.Recessed soil
It is individual in farming and animal husbandry, building materials, oil, metallurgy, food etc. more than 10 because of its special fibre structure, excellent absorption and decoloration performance
Field extensive application.
400,000,000 tons of Gansu Attapulgite Clay stone clay ore reserves is verified, prospective reserves then reaches 1,000,000,000 tons, and external has verified
Only 40,000,000 tons of gross reserves.Gansu be the maximum area of whole world Concave-convex clay rod resource reserve, the only reserves of Linze county just
It is 10 times of other countries' gross reserves.
Concave-convex clay rod is a kind of fibrous clay mineral, wherein it has been mingled with many impure minerals, these impurity ore deposits
Material is mixed in its flocculent structure.Recessed soil purification can be divided to two classes from processing method angle at present, and one is dry purification, and dry method is carried
Flat cost is low, but purity is low, and larger to recessed native fiber destruction；Another is wet purification, purity up to more than 95%, but
Because separation of solid and liquid is difficult, high energy consumption and cost is higher, it is difficult to promote.There is presently no a kind of well suitable for Gansu Attapulgite Clay
Industrialized production purifying technique.
The content of the invention
It is an object of the invention to provide a kind of purifying technique suitable for Gansu Attapulgite Clay in high yield, pass through the purification
Technique reduces production cost, improves yield, realizes the high-purity recessed soil of industrialized production.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of Mixed Concave convex rod, compares composition by following weight：2-3 parts of concave convex rod, 1-2 parts of eggshell fragments.
Composition is compared by following weight：2 parts of concave convex rod, 2 parts of eggshell fragments.
The eggshell fragments are crushed, and eggshell fragments and eggshell powder are mixed into eggshell powder.
A kind of wet-process purification method of Mixed Concave convex rod, comprises the following steps：
A, slurrying
Concave convex rod is pressed into liquid-solid ratio 100:1 is added to the water, and dispersant sodium pyrophosphate is added in mixed liquor, and sodium pyrophosphate addition is
Concave convex rod weight 0.5-2%, 1h slurrying, static 2-4h are stirred with 600r/min；
B, primary dewatering
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
C, once it is acidified
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
D, second dehydration
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
E, after-souring
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
F, dehydration washing
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds, clear water slurrying is added simultaneously
Centrifuge, clear water is washed 3-5 times repeatedly；
G, drying
Slurries are taken out and are placed in dryer, temperature control is in 105 DEG C of drying.
Also include
H, attrition grinding
The concave convex rod of drying is crushed, ground after crushing；
I, sieving
Purifying attapulgite is made in attapulgite sieving after grinding.
The mesh of step I sieve mesh 200.
The present invention profitable effect be：
For currently having low dispersion efficiency present in the method for purification of attapulgite clay mineral, natural subsidence sorting or sieving
The shortcoming of refining effect difference and activity duration length, the present invention proposes that one kind is suitable for large-scale industrial production Concave-convex clay rod
Purification and processing method.
1st, present invention is especially suited for ecosystem in Linze, Gansu, China, peaceful one purifying technique with Attapulgite Clay Minerals of meeting, Gansu Attapulgite Clay
Scale is big, and reserves are big, but the overall grade of ore is low compared with the Attapulgite Clay Minerals that Su-Wan area is produced, and mass fraction is about 20%~
30%, purification difficulty is big, and common purifying technique yield is relatively low.This programme can effectively lift respectful Linze, the peaceful band concave convex rod of meeting
The purification rate of clay pit.
2nd, the present invention overcomes the separation of solid and liquid of conventional wet purification difficult, by normal using repeatedly dehydration and acidification technique
Centrifugation apparatus can easily carry out separation of solid and liquid operation, and the nano concave earth of gained is reunited less, good dispersion, cost are relatively low.
3rd, sodium pyrophosphate is a kind of good surfactant in present invention process, can efficiently promote collapsing for recessed soil particle
Solution, while with the infiltration of moisture, substantially arriving at recessed native various hole surface of internal cavity, further promoting recessed native intragranular disintegration
With the dissociation of brilliant beam.
4th, the technique has the advantages that treating capacity is big, production efficiency is high, easy to maintenance, production cost is low, is particularly suitable for criticizing
Quantify production.
5th, the effect of the recessed mud acid of present invention process is mainly manifested in two aspects：On the one hand it is the solution of mineral aggregation
It is poly-；On the other hand it is the displacement to cation, plays a part of dredging duct and increase mineral specific surface area.Acidization can be solved
In terms of being interpreted as three below：1. under acidification, recessed native fibre bundle is dissociated, and increases its surface area, and edge is octahedra
Cation is separated out, with Mg2+Based on precipitation；2. part octahedral layer is dissolved, and increases its structure microchannel, room O2-With H+Knot
Silanol is synthesized, unreacted silicate component is shielded, the fibre-like morphology processes are maintained with A13+、Fe3+Separate out
Based on；3. with octahedral further dissolving, octahedral layer is collapsed, so that micropore is reduced sharply, Si-O tetrahedral layers can be rolled over
Folded and contraction, generates SiO2。
6th, qualified refined product is easily made in present invention process.A kind of wet purification process suitable for Gansu Attapulgite Clay
Obtained product quality is stable, and purifying attapulgite stable content is between 88%~95% in product.Purify attapulgite energy
Enough meet fine chemistry industry, medicine, cosmetic and health products, food and drink processing and high molecule nano composite material preparation field to height
The specific demand of performance functional stuffing.
7th, eggshell produces waste as life, for acid soil regulation, can effectively lift soil pH, can be used for soil
Earth is adjusted.And powdered egg has passivation to heavy metal in soil, there is good repair to acid heavy metal contaminated soil.
Eggshell fragments and eggshell powder are mixed into eggshell powder, and eggshell powder plays lifting lifting soil pH and heavy metal-passivated work
With eggshell fragments have differential of the arc shape to form independent support in local space, and improve the gas permeability of soil effectively prevents hardened simultaneously.
Embodiment
A kind of wet-process purification method of Mixed Concave convex rod, it is characterised in that comprise the following steps：
A, slurrying
Concave convex rod is pressed into liquid-solid ratio 100:1 is added to the water, and dispersant sodium pyrophosphate is added in mixed liquor, and sodium pyrophosphate addition is
Concave convex rod weight 0.5-2%, 1h slurrying, static 2-4h are stirred with 600r/min；
B, primary dewatering
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
C, once it is acidified
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
D, second dehydration
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
E, after-souring
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
F, dehydration washing
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds, clear water slurrying is added simultaneously
Centrifuge, clear water is washed 3-5 times repeatedly；
G, drying
Slurries are taken out and are placed in dryer, temperature control is in 105 DEG C of drying.
Also include
H, attrition grinding
The concave convex rod of drying is crushed, ground after crushing；
I, sieving
Purifying attapulgite is made in attapulgite sieving after grinding.
The mesh of step I sieve mesh 200.
A kind of Mixed Concave convex rod, compares composition by following weight：2-3 parts of concave convex rod, 1-2 parts of eggshell fragments.
Composition is compared by following weight：2 parts of concave convex rod, 2 parts of eggshell fragments.
The eggshell fragments are crushed, and eggshell fragments and eggshell powder are mixed into eggshell powder.
Describe present invention process in detail below in conjunction with specific implementation process, present invention process schematic implementation and
Illustrate to explain present invention process, but be not intended as the restriction to present invention process.
Embodiment 1
A kind of wet-process purification method of Mixed Concave convex rod, comprises the following steps：
A, slurrying
Concave convex rod is pressed into liquid-solid ratio 100:1 is added to the water, and dispersant sodium pyrophosphate is added in mixed liquor, and sodium pyrophosphate addition is
Concave convex rod weight 0.5%, 1h slurrying, static 2h are stirred with 600r/min；
B, primary dewatering
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
C, once it is acidified
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
D, second dehydration
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
E, after-souring
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
F, dehydration washing
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds, clear water slurrying is added simultaneously
Centrifuge, clear water is washed 3 times repeatedly；
G, drying
Slurries are taken out and are placed in dryer, temperature control is in 105 DEG C of drying.Purify attapulgite content 88%.
Embodiment 2
A kind of wet-process purification method of Mixed Concave convex rod, it is characterised in that comprise the following steps：
A, slurrying
Concave convex rod is pressed into liquid-solid ratio 100:1 is added to the water, and dispersant sodium pyrophosphate is added in mixed liquor, and sodium pyrophosphate addition is
Concave convex rod weight 2%, 1h slurrying, static 4h are stirred with 600r/min；
B, primary dewatering
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
C, once it is acidified
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
D, second dehydration
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
E, after-souring
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
F, dehydration washing
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds, clear water slurrying is added simultaneously
Centrifuge, clear water is washed 5 times repeatedly；
G, drying
Slurries are taken out and are placed in dryer, temperature control is in 105 DEG C of drying.
H, attrition grinding
The concave convex rod of drying is crushed, ground after crushing；
I, sieving
Purifying attapulgite, the mesh of sieve mesh 200 is made in attapulgite sieving after grinding.Purify attapulgite stable content
90%
Embodiment 3
A kind of wet-process purification method of Mixed Concave convex rod, it is characterised in that comprise the following steps：
A, slurrying
Concave convex rod is pressed into liquid-solid ratio 100:1 is added to the water, and dispersant sodium pyrophosphate is added in mixed liquor, and sodium pyrophosphate addition is
Concave convex rod weight 1%, 1h slurrying, static 3h are stirred with 600r/min；
B, primary dewatering
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
C, once it is acidified
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
D, second dehydration
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
E, after-souring
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
F, dehydration washing
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds, clear water slurrying is added simultaneously
Centrifuge, clear water is washed 4 times repeatedly；
G, drying
Slurries are taken out and are placed in dryer, temperature control is in 105 DEG C of drying；
H, attrition grinding
The concave convex rod of drying is crushed, ground after crushing；
I, sieving
Purifying attapulgite, the mesh of sieve mesh 200 is made in attapulgite sieving after grinding.Purify attapulgite stable content
93%
Contrast test
The purifying attapulgite of embodiment 1 to 3 can be mixed with eggshell fragments, be configured by following proportioning：2 parts of concave convex rod, eggshell
2 parts of fragment.The eggshell fragments are crushed, and eggshell fragments and eggshell powder are mixed into eggshell powder.Separate on same plot
Go out 4 pieces of ecological region planting rapes, 40 seeds are sowed in every piece of region, and 4 pieces of regions are cultivated using identical fertilizer and water, its
In 3 pieces of regions apply embodiment 1-3 concave convex rod as soil conditioner, by following table it can be seen that using embodiment 1-3 oil
Dish growing way is significantly better than traditional cultivation method, is highlighted while the purifying attapulgite of the administration high-purity of embodiment 3 is better.
| Using formula | 0-60 days plant situations | 60-90 days plant situations | 90-150 days plant situations | |
| Region 1 | Embodiment 1 | Bloom 29 | Average height 49cm | Average height 99cm |
| Region 2 | Embodiment 2 | Bloom 27 | Average height 52cm | Average height 95cm |
| Region 3 | Embodiment 3 | Bloom 32 | Average height 60cm | Average height 105cm |
| Region 4 | Nothing | Bloom 22 | Average height 42cm | Average height 86cm |
Claims (6)
1. a kind of Mixed Concave convex rod, it is characterised in that composition is compared by following weight：2-3 parts of concave convex rod, eggshell fragments 1-2
Part.
2. a kind of Mixed Concave convex rod according to claim 1, it is characterised in that composition is compared by following weight：Concave convex rod 2
Part, 2 parts of eggshell fragments.
3. a kind of Mixed Concave convex rod according to claim 1 or claim 2, it is characterised in that the eggshell fragments are crushed, eggshell
Fragment and eggshell powder are mixed into eggshell powder.
4. the wet-process purification method of a kind of Mixed Concave convex rod according to claim 1 or 2, it is characterised in that including following step
Suddenly：
A, slurrying
Concave convex rod is pressed into liquid-solid ratio 100:1 is added to the water, and dispersant sodium pyrophosphate is added in mixed liquor, and sodium pyrophosphate addition is
Concave convex rod weight 0.5-2%, 1h slurrying, static 2-4h are stirred with 600r/min；
B, primary dewatering
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
C, once it is acidified
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
D, second dehydration
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds；
E, after-souring
The hydrochloric acid of mass concentration 4% is added in Concave-convex clay rod, Concave-convex clay rod is mixed with hydrochloric acid by solid-to-liquid ratio 1: 5, with
600r/min stirs 2h slurrying；
F, dehydration washing
Slurries are sent into screw centrifuge, Concave-convex clay rod is obtained with the dehydration of 1800r/min rotating speeds, clear water slurrying is added simultaneously
Centrifuge, clear water is washed 3-5 times repeatedly；
G, drying
Slurries are taken out and are placed in dryer, temperature control is in 105 DEG C of drying.
5. the wet-process purification method of a kind of Mixed Concave convex rod according to claim 4, it is characterised in that also include
H, attrition grinding
The concave convex rod of drying is crushed, ground after crushing；
I, sieving
Purifying attapulgite is made in attapulgite sieving after grinding.
6. a kind of wet-process purification method of Mixed Concave convex rod according to claim 5, it is characterised in that the step I screen clothes
The mesh of mesh 200.
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| CN110078086A (en) * | 2019-06-04 | 2019-08-02 | 南京信息工程大学 | A kind of purification of low-grade red attapulgite stone clay and decoloring process |
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