CN106379903A - Technology for preparing refined diatomite - Google Patents
Technology for preparing refined diatomite Download PDFInfo
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- CN106379903A CN106379903A CN201610765098.9A CN201610765098A CN106379903A CN 106379903 A CN106379903 A CN 106379903A CN 201610765098 A CN201610765098 A CN 201610765098A CN 106379903 A CN106379903 A CN 106379903A
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- kieselguhr
- slip
- diatomite
- diatomaceous
- mine tailing
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- 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
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
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- 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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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a technology for preparing refined diatomite. The technology comprises 1, stirring to disperse raw ore of diatomite to obtain diatomite slurry, 2, filtering the diatomite slurry through a sieve, 3, adding a dispersant into the diatomite slurry and carrying out powerful dispersion to obtain dilute diatomite slurry, 4, putting the dilute diatomite slurry into a sedimentation basin, carrying out standing settlement, removing upper mine tailing, carrying out wastewater treatment on the upper mine tailing and through the above processes, treating the diatomite subjected to dispersion settlement in the lower layer twice or more, and 5, removing iron in the diatomite through a magnet separator and carrying out drying to obtain refined diatomite. The method has high efficiency and no pollution. The refined diatomite comprises greater than or equal to 88% of SiO2, less than or equal to 1% of Fe2O3 and less than or equal to 5% of Al2O3, satisfies diatomite food-grade requirements and can be used in more fields. After settlement of the upper mine tailing waste water through a flocculating agent, a supernatant is collected and is used for dispersion settlement so that cyclic utilization is realized.
Description
Technical field
The invention belongs to the technical field of kieselguhr separation and purification is and in particular to one kind prepares finely diatomaceous technique side
Method.
Background technology
Kieselguhr has its extensive purposes in commercial production, and especially high-grade fine kieselguhr is a kind of important
Industrial chemicals, food grade kieselguhr sinterable one-tenth filter aid, for the solid-liquid separation of the industries such as medicated beer, pharmacy, sugaring；Purity is more
High kieselguhr can be used as the carrier of catalyst, and the kieselguhr of different grades also acts as plastics, coating, paint and feedstuff etc. and fills out
Material.The kieselguhr mineral resources very abundant in the whole nation, is mainly used as filter aid and insulation material, but due to most kieselguhr
Resource grade is relatively low, and institute is few for preparing functional stuffing and adsorbing material.Kieselguhr is as the master of heat-insulating calcium silicate product
Want siliceous raw material to be that diatom has the advantages that microcellular structure, surface area are big, active high, but have more in low-grade kieselguhr
Clay, the impurity such as Organic substance, the formation to the tobermorite crystal of calcium silicates has inhibition therefore, for improve diatom
The purity of soil has very big using value, improves diatomaceous purifying technique, and reducing production cost has profound significance.Existing
Preparation finely diatomaceous technique mainly have the acid-hatching of young eggs, scouring method, roasting method, from rotation method, dry gravitational stratification method, hot flotation
The method of purification of the main flows such as ore deposit method has that energy consumption is big, environmental pollution is serious, the low shortcoming of efficiency.The present invention provide a kind of efficiently,
Pollution-free, efficiency high preparation finely diatomaceous process.
Content of the invention
In place of the present invention is directed to the deficiencies in the prior art, provides and a kind of efficient, pollution-free, efficiency high prepare fine diatom
The process of soil.After diatomite original ore is disperseed by strong stirring, first remove the impurity ore in sand form compared with coarse grain footpath with screen cloth, then plus
Enter suitable dispersant so that diatom is separated with impurity such as clays, isolate diatom by special settling apparatus, isolate
Diatom removes magnetic impurity with magnetic separator after multiple dispersing and settling technique, and finally drying is sieved and obtained terra silicea purificata, system
The terra silicea purificata SiO obtaining2% >=88%, Fe2O3%≤1%, Al2O3%≤5%, reaches the requirement of kieselguhr food stage, can
For many-sided.In addition, to the waste water of upper strata mine tailing after flocculant sedimentation, its supernatant is taken to be reused for point
Dissipate sedimentation, realize recycling, to zero environmental.
In order to solve above-mentioned technical problem, adopt the following technical scheme that：
One kind prepares finely diatomaceous process, comprises the following steps：
(1) weigh diatomite original ore, diatomite original ore is obtained after dispersed with stirring kieselguhr slip.
(2) with sieve, kieselguhr slip is filtered, kieselguhr slip is diluted processing while filtering, removes
Remove the impurity ore in sand form in coarse grain footpath.
(3) the kieselguhr slip having diluted in filtration adds dispersant to carry out high force dispersion, makes the diatom body and clay warp
Depart from after fully dispersed, obtain kieselguhr thin liquid pulp.
(4) kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, standing sedimentation time control 6～
8h, then removes upper strata mine tailing, and carries out wastewater treatment to upper strata mine tailing, on the kieselguhr that lower floor is dispersed through settling is carried out again
State operation twice and more than.
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator repeatedly removing ferrum, improves diatomaceous silicon content,
Then it is dried drying, sorting obtains terra silicea purificata.
Further, in step (1), prepared kieselguhr pulp density is 5%～20%.
Further, in step (2), the mesh number of sieve is 300.
Further, in step (3), dispersant is Disodium oxalate. or sodium phosphate, and the consumption of dispersant is kieselguhr slip
1%～3%.
Further, in step (3), during dispersant carries out high force dispersion, first heat is carried out to kieselguhr slip
Boil or ultrasonic coupling high force dispersion, and dilute sodium hydroxide and phosphoric acid,diluted salt are added in kieselguhr slip, adjust kieselguhr
The PH of slip is 9～10 it is ensured that dispersibility.When initial stage dispersant is added in kieselguhr slip, overall solution is in strong basicity, no
Beneficial to the dispersion of the diatom body and clay, therefore dilute sodium hydroxide and phosphoric acid,diluted salt are added in kieselguhr slip, adjust silicon
The PH of diatomaceous earth slip is 9～10, is not only advantageous to accelerate the dispersion efficiency of the diatom body and clay, and adds dilute sodium hydroxide
New impurity can't be introduced with phosphoric acid,diluted salt, be easy to again reclaim dispersant Disodium oxalate. or sodium phosphate, make dispersant permissible
Preferably secondary utilization, meets the requirement for environmental protection for the current people.
Further, in step (3), the kieselguhr thin liquid pulp concentration obtaining is less than 5%.
Further, in step (4), the water lev el control of sedimentation tank is in 80～100cm.
Further, in step (4), upper strata mine tailing carries out the concrete grammar of wastewater treatment：Wadding is added in the mine tailing of upper strata
Solidifying agent, carries out flocculating sedimentation, the supernatant that reuse flocculating sedimentation is crossed to the clay impurity in the mine tailing of upper strata, is reused for step
(3) and step (4) dispersing and settling.
Further, flocculant is polyaluminium sulfate and PAM cation, and the concentration of polyaluminium sulfate is 1 ‰, PAM cation
Concentration be 0.33 ‰.
Further, in step (5), the magnetic field intensity of magnetic separator is 10000-16000 oersted, and the poly- magnetic of magnetic separator is situated between
Matter is expanded metal lath.
Due to adopting technique scheme, have the advantages that：
The present invention prepares finely diatomaceous process for one kind, and diatomite original ore is divided by the method by strong stirring
After dissipating, first remove the impurity ore in sand form compared with coarse grain footpath with screen cloth, add suitable dispersant so that diatom is divided with impurity such as clays
From isolating diatom by special settling apparatus, the diatom isolated is removed with magnetic separator after multiple dispersing and settling technique
Remove magnetic impurity, finally dry and sieve and obtain terra silicea purificata, prepared terra silicea purificata SiO2% >=88%, Fe2O3%≤
1%, Al2O3%≤5%, reaches the requirement of kieselguhr food stage, can be used for many-sided.In addition, upper strata mine tailing is given up
Water, after flocculant sedimentation, takes its supernatant to be reused for dispersing and settling, realizes recycling, to zero environmental.
When initial stage dispersant is added in kieselguhr slip, overall solution is in strong basicity, is unfavorable for the diatom body and clay
Dispersion, therefore dilute sodium hydroxide and phosphoric acid,diluted salt are added in kieselguhr slip, the PH adjusting kieselguhr slip is 9～
10, it is not only advantageous to accelerate the dispersion efficiency of the diatom body and clay, and add dilute sodium hydroxide and the phosphoric acid,diluted salt can't
Introduce new impurity, be easy to again reclaim dispersant Disodium oxalate. or sodium phosphate, make dispersant can preferably secondary utilization, symbol
Be fated the requirement for environmental protection for the moderns.
The method carries out wastewater treatment to upper strata mine tailing, with flocculant, the clay impurity in the mine tailing of upper strata is carried out flocculation heavy
Fall, and the supernatant that reuse flocculating sedimentation is crossed, for dispersing and settling.By the reasonable consumption controlling flocculant, flocculating sedimentation
The supernatant crossed can be preferably applied to dispersing and settling.If flocculant usage very little, does not have the effect of flocculation；If
Flocculant usage is excessive, then, when the supernatant is back to dispersing and settling, its power of influence is much larger than the effect of dispersant, by impurity etc.
Float has all carried out flocculating sedimentation, and has not had the effect of dispersing and settling.Precipitum through flocculating can dry making
Building brick, refractory brick, accomplish twice laid, environmental protection.
Specific embodiment
One kind prepares finely diatomaceous process, comprises the following steps：
(1) weigh diatomite original ore, diatomite original ore is obtained after dispersed with stirring kieselguhr slip, prepared diatom
Native pulp density is 5%～20%.
(2) with sieve, kieselguhr slip is filtered, the mesh number of sieve is 300, to diatom earth material while filtering
Slurry is diluted processing, and is conducive to filtering out heavy sand, effectively removes the impurity ore in sand form in coarse grain footpath.
(3) carry out high force dispersion filtering kieselguhr slip addition dispersant dilute, dispersant for Disodium oxalate. or
Sodium phosphate, the consumption of dispersant is the 1%～3% of kieselguhr slip.During dispersant carries out high force dispersion, first to silicon
Diatomaceous earth slip carries out heat and boils or ultrasonic coupling high force dispersion, and sodium hydroxide and phosphate are added in kieselguhr slip,
The PH adjusting kieselguhr slip is 9～10 it is ensured that dispersibility.The diatom body and clay pass through above-mentioned fully dispersed rear disengaging,
Obtain kieselguhr thin liquid pulp, the kieselguhr thin liquid pulp concentration obtaining is less than 5%.Initial stage dispersant is added in kieselguhr slip
When, overall solution is in strong basicity, is unfavorable for the dispersion of the diatom body and clay, therefore dilute sodium hydroxide is added with phosphoric acid,diluted salt
To in kieselguhr slip, the PH adjusting kieselguhr slip is 9～10, is not only advantageous to accelerate the dispersion effect of the diatom body and clay
Rate, and add dilute sodium hydroxide and phosphoric acid,diluted salt can't introduce new impurity, be easy to again to reclaim dispersant Disodium oxalate. or
Person's sodium phosphate, make dispersant can preferably secondary utilization, meet the requirement for environmental protection for the current people.
(4) kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, the water lev el control of sedimentation tank 80～
100cm, standing sedimentation time control, in 6～8h, then removes upper strata mine tailing, and carries out wastewater treatment, lower floor to upper strata mine tailing
The kieselguhr being dispersed through settling carry out again aforesaid operations twice and more than.Upper strata mine tailing carries out the concrete grammar of wastewater treatment：
Add flocculant in the mine tailing of upper strata, flocculating sedimentation is carried out to the clay impurity in the mine tailing of upper strata, it is upper that reuse flocculating sedimentation is crossed
Layer clear liquid, is reused for step (3) and the dispersing and settling of step (4).Flocculant is polyaluminium sulfate and PAM cation, polymerization
The concentration of aluminum sulfate is the concentration of 1 ‰, PAM cation is 0.33 ‰.
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator repeatedly removing ferrum, diatomaceous containing is improved with this
The magnetic field intensity of silicon amount, wherein magnetic separator is 10000-16000 oersted, and the magnetic matrix of magnetic separator is expanded metal lath, Ran Houjin
Row is dried dries, and sorting obtains terra silicea purificata.The method carries out wastewater treatment to upper strata mine tailing, with flocculant by upper strata mine tailing
In clay impurity carry out flocculating sedimentation, and the supernatant that reuse flocculating sedimentation is crossed, for dispersing and settling.Controlled by reasonable
The consumption of flocculant, the supernatant that flocculating sedimentation is crossed can be preferably applied to dispersing and settling.If flocculant usage is very little,
Do not have the effect of flocculation；If flocculant usage is excessive, when the supernatant is back to dispersing and settling, its power of influence is much larger than
The effect of dispersant, the float such as impurity has all been carried out flocculating sedimentation, and has not had the effect of dispersing and settling.Through flocculating
Precipitum can dry making building brick, refractory brick, accomplish twice laid, environmental protection.
After diatomite original ore is disperseed by the method by strong stirring, first remove the impurity ore in sand form compared with coarse grain footpath with screen cloth,
Add suitable dispersant so that diatom is separated with impurity such as clays, isolate diatom by special settling apparatus, separate
The diatom going out removes magnetic impurity with magnetic separator after multiple dispersing and settling technique, and finally drying sieves obtains refined diatom
Soil, prepared terra silicea purificata SiO2% >=88%, Fe2O3%≤1%, Al2O3%≤5%, reaches wanting of kieselguhr food stage
Ask, can be used for many-sided.In addition, to the waste water of upper strata mine tailing after flocculant sedimentation, take its supernatant again
For dispersing and settling, realize recycling, to zero environmental.The specific performance parameter index of the terra silicea purificata obtaining is as follows
Shown in table 1：
Performance indications
With reference to embodiment, the present invention is described in further detail：
Embodiment 1
(1) weigh diatomite original ore 100g, put into and separate in beaker, add 1900g water, diatomite original ore is passed through to stir
Kieselguhr slip is obtained after mixing dispersion.
(2) with sieve, kieselguhr slip is filtered, the mesh number of sieve is 300, to diatom earth material while filtering
Slurry is diluted processing, and is conducive to filtering out heavy sand, effectively removes the impurity ore in sand form in coarse grain footpath.
(3) the kieselguhr slip having diluted in filtration adds dispersant to carry out high force dispersion, and dispersant is Disodium oxalate., dispersion
The consumption of agent is the 3% of kieselguhr slip.During dispersant carries out high force dispersion, first heat is carried out to kieselguhr slip and boil
High force dispersion, and sodium hydroxide is added in kieselguhr slip, the PH adjusting kieselguhr slip is 9.5 it is ensured that dispersibility.Silicon
The algae body and clay pass through above-mentioned fully dispersed rear disengaging, obtain kieselguhr thin liquid pulp, the kieselguhr thin liquid pulp concentration obtaining
For 4%.
(4) kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, the water lev el control of sedimentation tank exists
80cm, standing sedimentation time control, in 6h, then removes upper strata mine tailing, and upper strata mine tailing is carried out with wastewater treatment, and lower floor is through dividing
Dissipate the kieselguhr settling and carry out aforesaid operations twice again.
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator repeatedly removing ferrum, diatomaceous containing is improved with this
The magnetic field intensity of silicon amount, wherein magnetic separator is 10000 oersteds, and the magnetic matrix of magnetic separator is expanded metal lath, is then dried
Dry, sorting obtains terra silicea purificata, the performance indications of the terra silicea purificata obtaining：SiO2For 89.1%, Fe2O3For 0.8%,
Al2O3% is 3.4%, and remaining content is 6.7%.
Embodiment 2
(1) weigh diatomite original ore 100g, put into and separate in beaker, add 400g water, diatomite original ore is passed through to stir
Kieselguhr slip is obtained after mixing dispersion.
(2) with sieve, kieselguhr slip is filtered, the mesh number of sieve is 300, to diatom earth material while filtering
Slurry is diluted processing, and is conducive to filtering out heavy sand, effectively removes the impurity ore in sand form in coarse grain footpath.
(3) the kieselguhr slip having diluted in filtration adds dispersant to carry out high force dispersion, and dispersant is sodium phosphate, dispersion
The consumption of agent is the 1% of kieselguhr slip.During dispersant carries out high force dispersion, first heat is carried out to kieselguhr slip and boil
High force dispersion, and phosphate is added in kieselguhr slip, the PH adjusting kieselguhr slip is 10 it is ensured that dispersibility.Diatom
The body and clay pass through above-mentioned fully dispersed rear disengaging, obtain kieselguhr thin liquid pulp, the kieselguhr thin liquid pulp concentration obtaining is
4.8%.
(4) kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, the water lev el control of sedimentation tank exists
100cm, standing sedimentation time control, in 8h, then removes upper strata mine tailing, and upper strata mine tailing is carried out with wastewater treatment, and lower floor is through dividing
Dissipate the kieselguhr that settled and carry out aforesaid operations three times again.
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator repeatedly removing ferrum, diatomaceous containing is improved with this
The magnetic field intensity of silicon amount, wherein magnetic separator is 16000 oersteds, and the magnetic matrix of magnetic separator is expanded metal lath, is then dried
Dry, sorting obtains terra silicea purificata, the performance indications of the terra silicea purificata obtaining：SiO2For 90.1%, Fe2O3For 0.5%,
Al2O3% is 4.4%, and remaining content is 5%.
Embodiment 3
(1) weigh diatomite original ore 100g, put into and separate in beaker, add 900g water, diatomite original ore is passed through to stir
Kieselguhr slip is obtained after mixing dispersion.
(2) with sieve, kieselguhr slip is filtered, the mesh number of sieve is 300, to diatom earth material while filtering
Slurry is diluted processing, and is conducive to filtering out heavy sand, effectively removes the impurity ore in sand form in coarse grain footpath.
(3) the kieselguhr slip having diluted in filtration adds dispersant to carry out high force dispersion, and dispersant is sodium phosphate, dispersion
The consumption of agent is the 1.5% of kieselguhr slip.During dispersant carries out high force dispersion, first heat is carried out to kieselguhr slip
Boil high force dispersion, and phosphate is added in kieselguhr slip, the PH adjusting kieselguhr slip is 9 it is ensured that dispersibility.Diatom
The body and clay pass through above-mentioned fully dispersed rear disengaging, obtain kieselguhr thin liquid pulp, the kieselguhr thin liquid pulp concentration obtaining is
3.9%.
(4) kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, the water lev el control of sedimentation tank exists
100cm, standing sedimentation time control, in 7h, then removes upper strata mine tailing, and upper strata mine tailing is carried out with wastewater treatment, and lower floor is through dividing
Dissipate the kieselguhr that settled and carry out aforesaid operations four times again.
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator repeatedly removing ferrum, diatomaceous containing is improved with this
The magnetic field intensity of silicon amount, wherein magnetic separator is 13000 oersteds, and the magnetic matrix of magnetic separator is expanded metal lath, is then dried
Dry, sorting obtains terra silicea purificata, the performance indications of the terra silicea purificata obtaining：SiO2For 88.5%, Fe2O3For 0.9%,
Al2O3% is 2.4%, and remaining content is 8.2%.
Embodiment 4
(1) weigh diatomite original ore 100g, put into and separate in beaker, add 1500g water, diatomite original ore is passed through to stir
Kieselguhr slip is obtained after mixing dispersion.
(2) with sieve, kieselguhr slip is filtered, the mesh number of sieve is 300, to diatom earth material while filtering
Slurry is diluted processing, and is conducive to filtering out heavy sand, effectively removes the impurity ore in sand form in coarse grain footpath.
(3) the kieselguhr slip having diluted in filtration adds dispersant to carry out high force dispersion, and dispersant is Disodium oxalate., dispersion
The consumption of agent is the 2.5% of kieselguhr slip.During dispersant carries out high force dispersion, first heat is carried out to kieselguhr slip
Boil high force dispersion, and sodium hydroxide is added in kieselguhr slip, the PH adjusting kieselguhr slip is 9.4 it is ensured that dispersibility.
The diatom body and clay pass through above-mentioned fully dispersed rear disengaging, obtain kieselguhr thin liquid pulp, the kieselguhr thin liquid pulp obtaining is dense
Spend for 2.4%.
(4) kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, the water lev el control of sedimentation tank exists
85cm, standing sedimentation time control, in 7.5h, then removes upper strata mine tailing, and upper strata mine tailing is carried out with wastewater treatment, lower floor's warp
The kieselguhr that dispersing and settling is crossed carries out aforesaid operations three times again.
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator repeatedly removing ferrum, diatomaceous containing is improved with this
The magnetic field intensity of silicon amount, wherein magnetic separator is 14000 oersteds, and the magnetic matrix of magnetic separator is expanded metal lath, is then dried
Dry, sorting obtains terra silicea purificata, the performance indications of the terra silicea purificata obtaining：SiO2For 92.7%, Fe2O3For 0.6%,
Al2O3% is 3.9%, and remaining content is 2.8%.
Embodiment 5
(1) weigh diatomite original ore 100g, put into and separate in beaker, add 1200g water, diatomite original ore is passed through to stir
Kieselguhr slip is obtained after mixing dispersion.
(2) with sieve, kieselguhr slip is filtered, the mesh number of sieve is 300, to diatom earth material while filtering
Slurry is diluted processing, and is conducive to filtering out heavy sand, effectively removes the impurity ore in sand form in coarse grain footpath.
(3) the kieselguhr slip having diluted in filtration adds dispersant to carry out high force dispersion, and dispersant is Disodium oxalate., dispersion
The consumption of agent is the 1.8% of kieselguhr slip.During dispersant carries out high force dispersion, first heat is carried out to kieselguhr slip
Boil high force dispersion, and sodium hydroxide is added in kieselguhr slip, the PH adjusting kieselguhr slip is 10 it is ensured that dispersibility.
The diatom body and clay pass through above-mentioned fully dispersed rear disengaging, obtain kieselguhr thin liquid pulp, the kieselguhr thin liquid pulp obtaining is dense
Spend for 4.4%.
(4) kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, the water lev el control of sedimentation tank exists
95cm, standing sedimentation time control, in 6.5h, then removes upper strata mine tailing, and upper strata mine tailing is carried out with wastewater treatment, lower floor's warp
The kieselguhr that dispersing and settling is crossed carries out aforesaid operations five times again.
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator repeatedly removing ferrum, diatomaceous containing is improved with this
The magnetic field intensity of silicon amount, wherein magnetic separator is 15000 oersteds, and the magnetic matrix of magnetic separator is expanded metal lath, is then dried
Dry, sorting obtains terra silicea purificata, the performance indications of the terra silicea purificata obtaining：SiO2For 94.7%, Fe2O3For 0.5%,
Al2O3% is 3.8%, and remaining content is 1%.
These are only the specific embodiment of the present invention, but the technical characteristic of the present invention is not limited thereto.Any with this
Based on bright, for solving essentially identical technical problem, realize essentially identical technique effect, done ground simple change, etc.
With replacement or modification etc., all it is covered by among protection scope of the present invention.
Claims (10)
1. one kind prepare finely diatomaceous process it is characterised in that comprising the following steps：
(1) weigh diatomite original ore, described diatomite original ore is obtained kieselguhr slip after dispersed with stirring；
(2) with sieve, described kieselguhr slip is filtered, described kieselguhr slip is diluted locating while filtering
Reason, removes the impurity ore in sand form in coarse grain footpath；
(3) the described kieselguhr slip having diluted in filtration adds dispersant to carry out high force dispersion, makes the diatom body and clay warp
Depart from after fully dispersed, obtain kieselguhr thin liquid pulp；
(4) described kieselguhr thin liquid pulp is first placed in sedimentation tank, carries out standing sedimentation, standing sedimentation time control 6～
8h, then removes upper strata mine tailing, and carries out wastewater treatment to upper strata mine tailing, on the kieselguhr that lower floor is dispersed through settling is carried out again
State operation twice and more than；
(5) kieselguhr after above-mentioned dispersing and settling is first carried out with magnetic separator except ferrum, improve diatomaceous silicon content, then carry out
It is dried and dries, sorting obtains terra silicea purificata.
2. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(1), in, prepared kieselguhr pulp density is 5%～20%.
3. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(2), in, the mesh number of described sieve is 300.
4. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(3) in, described dispersant is Disodium oxalate. or sodium phosphate, and the consumption of described dispersant is the 1%～3% of kieselguhr slip.
5. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(3) in, during described dispersant carries out high force dispersion, first heat is carried out to described kieselguhr slip and boil or ultrasonic coupling
High force dispersion, and sodium hydroxide and phosphate are added in described kieselguhr slip, the PH adjusting described kieselguhr slip is 9
～10 it is ensured that dispersibility.
6. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(3), in, the kieselguhr thin liquid pulp concentration obtaining is less than 5%.
7. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(4), in, the water lev el control of described sedimentation tank is in 80～100cm.
8. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(4), in, described upper strata mine tailing carries out the concrete grammar of wastewater treatment：Add flocculant in the mine tailing of upper strata, in the mine tailing of upper strata
Clay impurity carry out flocculating sedimentation, the supernatant that reuse flocculating sedimentation is crossed, be reused for step (3) and step (4) point
Dissipate sedimentation.
9. one kind according to claim 8 prepare finely diatomaceous process it is characterised in that：Described flocculant is
Polyaluminium sulfate and PAM cation, the concentration of described polyaluminium sulfate is 1 ‰, and the concentration of described PAM cation is 0.33 ‰.
10. one kind according to claim 1 prepare finely diatomaceous process it is characterised in that：In described step
(5) in, the magnetic field intensity of described magnetic separator is 10000-16000 oersted, and the magnetic matrix of described magnetic separator is expanded metal lath.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610765098.9A CN106379903B (en) | 2016-08-30 | 2016-08-30 | A kind of process preparing fine diatomite |
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| CN201610765098.9A CN106379903B (en) | 2016-08-30 | 2016-08-30 | A kind of process preparing fine diatomite |
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| CN106379903A true CN106379903A (en) | 2017-02-08 |
| CN106379903B CN106379903B (en) | 2019-01-25 |
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| CN201610765098.9A Active CN106379903B (en) | 2016-08-30 | 2016-08-30 | A kind of process preparing fine diatomite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107140648A (en) * | 2017-07-04 | 2017-09-08 | 合肥品冠环保科技有限责任公司 | A kind of smart diatomaceous preparation method |
| CN110092386A (en) * | 2019-05-07 | 2019-08-06 | 西北师范大学 | A kind of method of purification of attapulgite clay |
| CN114735712A (en) * | 2022-04-25 | 2022-07-12 | 吉林省临江天元催化剂有限公司 | Method for purifying diatomite |
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| JP3321602B2 (en) * | 2000-02-15 | 2002-09-03 | 独立行政法人産業技術総合研究所 | Selective lithium separating agent and method for producing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107140648A (en) * | 2017-07-04 | 2017-09-08 | 合肥品冠环保科技有限责任公司 | A kind of smart diatomaceous preparation method |
| CN107140648B (en) * | 2017-07-04 | 2019-04-12 | 合肥品冠环保科技有限责任公司 | A kind of preparation method of essence diatomite |
| CN110092386A (en) * | 2019-05-07 | 2019-08-06 | 西北师范大学 | A kind of method of purification of attapulgite clay |
| CN114735712A (en) * | 2022-04-25 | 2022-07-12 | 吉林省临江天元催化剂有限公司 | Method for purifying diatomite |
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| CN106379903B (en) | 2019-01-25 |
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