CN105396371A - Purifying and extruding attapulgite ceramisite filter material - Google Patents

Purifying and extruding attapulgite ceramisite filter material Download PDF

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Publication number
CN105396371A
CN105396371A CN201510798292.2A CN201510798292A CN105396371A CN 105396371 A CN105396371 A CN 105396371A CN 201510798292 A CN201510798292 A CN 201510798292A CN 105396371 A CN105396371 A CN 105396371A
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CN
China
Prior art keywords
concave
attapulgite
clay rod
extruding
water
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.)
Pending
Application number
CN201510798292.2A
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Chinese (zh)
Inventor
任珺
陶玲
赵乾程
关正义
闫洁
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Lanzhou Kunlun Environmental Protection Technology Co Ltd
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Lanzhou Kunlun Environmental Protection Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lanzhou Kunlun Environmental Protection Technology Co Ltd filed Critical Lanzhou Kunlun Environmental Protection Technology Co Ltd
Priority to CN201510798292.2A priority Critical patent/CN105396371A/en
Publication of CN105396371A publication Critical patent/CN105396371A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/06—Inorganic material, e.g. asbestos fibres, glass beads or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0208—Single-component fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/11—Clays

Abstract

The invention relates to ceramic filtration materials, in particular to a purifying and extruding attapulgite ceramisite filter material. A method for preparing the extruding ceramisite filter material by performing wet purification on attapulgite clay lies in that after purification, attapulgite clay is stirred, uniformly blended, kneaded, extruded for shaping, and is further dried and roasted to obtain the finished product. The purifying and extruding attapulgite ceramisite filter material provided by the invention can efficiently adsorb and purify pollutants in the water, and can also be used for efficiently removing harmful gases such as NOx, VOCs, NH3, H2S and SO2, and the advantages of high mechanical strength, small air resistance, high air porosity, large specific surface area, high adsorption capacity, good stability, low cost, reusability and reproducibility can be achieved.

Description

A kind of purification extrusion pressing type concave convex stick ceramic grain filter
Technical field
The present invention relates to ceramic filter material, particularly a kind of purification extrusion pressing type concave convex stick ceramic grain filter.
Background technology
A kind of natural non-metallic clay mineral that it is essential mineral composition that attapulgite refers to attapulgite (attapulgite), is mineralogically under the jurisdiction of sepiolite group.Natural attapulgite also exists certain mineralogy limitation.Symbiosis containing significant proportion in mineral, accompanying impurities, impurity is based on montmorillonite, containing a small amount of illite and illite/smectite mixed layer mineral, (dolomite is main to common carbonate mineral, a small amount of calcite) and the Si oxide (quartz, crystallite opal, amorphous opal etc.) of various form, apatite, pyrolusite, allochite, magnetic iron ore etc. also containing trace.Features of Attapulgite Minerals forms along with the different excursion of ore type is very large.The existence of these impurity weakens the physical and chemical performance of attapulgite entirety, thus the colloidality of attapulgite, adsorptivity etc. are greatly affected in commercial Application.
Do not have a kind of concave convex rod water treatment filter material to promote the use of at present, Attapulgite ceramic ceramic filter material has wide market.Play increasing effect in raising adsorption efficiency, reduction absorption cost and saving source side face, become very rising new material.
Summary of the invention
The invention provides a kind of low cost, long-life, not easily form secondary pollution and the purification extrusion pressing type concave convex stick ceramic grain filter that can reuse.
The technical scheme that the present invention solves the employing of its technical problem is:
A kind of purification extrusion pressing type concave convex stick ceramic grain filter, comprises the steps:
A, process of selecting materials
Concave-convex clay rod, through airing, makes the moisture content of Concave-convex clay rod be down to 30%-45%;
B, slurrying
Concave-convex clay rod stirs under being added to the water normal temperature, and solid-liquid weight ratio is 1:20, fully stirs 15min slurrying;
C, shearing, dispersion
Dispersant is added in slurries, dispersant is Sodium Polyacrylate, calgon or sodium pyrophosphate, dispersant addition is the 0.1-3% of Concave-convex clay rod weight, suspension is formed after stirring 15min, this suspension is put in high-speed shearing machine, carries out shearing dispersion, through centrifuge process, get upper strata dewatering slurries after centrifugal dry, obtain high-purity attapulgite powder;
D, acid activation
With high-purity attapulgite powder for raw material, high-purity attapulgite powder, water and sulfuric acid are prepared by weight, high-purity attapulgite powder 45-65 part, water 35-50 part, mass fraction 98% sulfuric acid 0.5-2 part, mass fraction 98% sulfuric acid is diluted in water, be sprayed on Concave-convex clay rod after sulfuric acid dilution, after stirring, stack 24-48h;
E, rubbing, extruding
The high-purity attapulgite powder of acidification prepares extruded granule by extruder, under low pressure 3-5MPa, keep 1-10 minute, continuously extruding and molding under high pressure 10-40MPa;
F, roasting
Extruded granule, through 450-550 DEG C of roasting 1-2h, naturally cools to normal temperature after pellet dehydrating and curing and obtains finished product.
The long 50mm-200mm of shaped granule size, wide 50mm-200mm, high 50mm-1000mm in described step e.
Beneficial effect of the present invention is:
The present invention take Concave-convex clay rod as raw material, adopt wet purification process, stir through high shear force and add appropriate dispersant, remove most of impurity, again through acid activation, stir and evenly mix, rubbing, then extruded by extruder, through drying, broken, sieve, high-temperature roasting activation, obtain water treatment ceramsite filter.
In order to improve the quality of attapulgite to meet industrial needs, usually before use purifying pre-treatment is carried out to it, the object that pre-treatment carried out to attapulgite raw ore mainly in order to improve attapulgite content, improve that it is dispersed, remove shale impurity dredging crystals hole, be convenient to improve process further.The visible attapulgite soil mineral naturally existed often need just to obtain highly purified attapulgite soil through purifying and are conducive to further exploitation.
Utilize attapulgite crystal fibre elongated, internal gutter is many, and it is excellent that specific area has greatly and therefrom
Adsorption selection character, and be widely used in the fields such as chemical industry, agricultural, food, medical science, environmental protection.Just be widely used at present the wastewater treatment of sewage disposal particularly tannery of printing and dyeing mill, treated sewage can reach discharging standards.The toxic larger organic matters such as process oleyl amine can also be removed while decolouring.Attapulgite also has certain ion-exchange capacity, so can be used for administering the heavy-metal pollutions such as cadmium, lead, strontium.
Produce by rationally preparing burden and controlling firing process the ceramic grain filter adapting to require in BAF, each side is better than traditional filtrates such as quartz sand.Concave convex stick ceramic grain filter overcomes general ceramics filling surface knot glaze, shortcoming that open porosity is low.Containing a large amount of impurity in attapulgite tcrude ore, the existence of impurity directly affects the serviceability of attapulgite, attapulgite just can be made to have higher absorption property through purifying.
The method utilizing wet purification Concave-convex clay rod to prepare extrusion pressing type ceramic filter material provided by the invention, will after Concave-convex clay rod be purified, and through stirring and evenly mixing, rubbing, extruded, then obtains finished product through ageing, oven dry and calcining process.Efficient adsorption cleaning can be carried out to pollutant in water body, can also be applied to NOx, VOCs, NH 3, H 2s and SO 2efficiently remove Deng pernicious gas, have that mechanical strength is high, vapour lock is little simultaneously, the advantage such as porosity and specific area is large, adsorption capacity large, good stability, the low renewable repeated use of cost.
Detailed description of the invention
A kind of purification extrusion pressing type concave convex stick ceramic grain filter, comprises the steps:
A, process of selecting materials
Concave-convex clay rod, through airing, makes the moisture content of Concave-convex clay rod be down to 30%-45%;
B, slurrying
Concave-convex clay rod stirs under being added to the water normal temperature, and solid-liquid weight ratio is 1:20, fully stirs 15min slurrying;
C, shearing, dispersion
Dispersant is added in slurries, dispersant is Sodium Polyacrylate, calgon or sodium pyrophosphate, dispersant addition is the 0.1-3% of Concave-convex clay rod weight, suspension is formed after stirring 15min, this suspension is put in high-speed shearing machine, carries out shearing dispersion, through centrifuge process, get upper strata dewatering slurries after centrifugal dry, obtain high-purity attapulgite powder;
D, acid activation
With high-purity attapulgite powder for raw material, high-purity attapulgite powder, water and sulfuric acid are prepared by weight, high-purity attapulgite powder 45-65 part, water 35-50 part, mass fraction 98% sulfuric acid 0.5-2 part, mass fraction 98% sulfuric acid is diluted in water, be sprayed on Concave-convex clay rod after sulfuric acid dilution, after stirring, stack 24-48h;
E, rubbing, extruding
The high-purity attapulgite powder of acidification prepares extruded granule by extruder, under low pressure 3-5MPa, keep 1-10 minute, continuously extruding and molding under high pressure 10-40MPa;
F, roasting
Extruded granule, through 450-550 DEG C of roasting 1-2h, naturally cools to normal temperature after pellet dehydrating and curing and obtains finished product.
The long 50mm-200mm of shaped granule size, wide 50mm-200mm, high 50mm-1000mm in described step e.
Embodiment 1
A kind of purification extrusion pressing type concave convex stick ceramic grain filter, comprises the steps:
A, process of selecting materials
Concave-convex clay rod, through airing, makes the moisture content of Concave-convex clay rod be down to 30%-45%;
B, slurrying
Concave-convex clay rod stirs under being added to the water normal temperature, and solid-liquid weight ratio is 1:20, fully stirs 15min slurrying;
C, shearing, dispersion
Dispersant is added in slurries, dispersant is Sodium Polyacrylate, calgon or sodium pyrophosphate, dispersant addition is 0.1% of Concave-convex clay rod weight, suspension is formed after stirring 15min, this suspension is put in high-speed shearing machine, carries out shearing dispersion, through centrifuge process, get upper strata dewatering slurries after centrifugal dry, obtain high-purity attapulgite powder;
D, acid activation
With high-purity attapulgite powder for raw material, high-purity attapulgite powder, water and sulfuric acid are prepared by weight, high-purity attapulgite powder 45 parts, 35 parts, water, 0.5 part, mass fraction 98% sulfuric acid, mass fraction 98% sulfuric acid is diluted in water, be sprayed on Concave-convex clay rod after sulfuric acid dilution, after stirring, stack 24h;
E, rubbing, extruding
The high-purity attapulgite powder of acidification prepares extruded granule by extruder, keeps 1 minute, continuously extruding and molding under high pressure 10-40MPa under low pressure 3-5MPa; The long 50mm-200mm of shaped granule size, wide 50mm-200mm, high 50mm-1000mm;
F, roasting
Extruded granule, through 450 DEG C of roasting 1h, naturally cools to normal temperature after pellet dehydrating and curing and obtains finished product.
Embodiment 2
A kind of purification extrusion pressing type concave convex stick ceramic grain filter, comprises the steps:
A, process of selecting materials
Concave-convex clay rod, through airing, makes the moisture content of Concave-convex clay rod be down to 30%-45%;
B, slurrying
Concave-convex clay rod stirs under being added to the water normal temperature, and solid-liquid weight ratio is 1:20, fully stirs 15min slurrying;
C, shearing, dispersion
Dispersant is added in slurries, dispersant is Sodium Polyacrylate, calgon or sodium pyrophosphate, dispersant addition is 2% of Concave-convex clay rod weight, suspension is formed after stirring 15min, this suspension is put in high-speed shearing machine, carries out shearing dispersion, through centrifuge process, get upper strata dewatering slurries after centrifugal dry, obtain high-purity attapulgite powder;
D, acid activation
With high-purity attapulgite powder for raw material, high-purity attapulgite powder, water and sulfuric acid are prepared by weight, high-purity attapulgite powder 50 parts, 40 parts, water, 1 part, mass fraction 98% sulfuric acid, mass fraction 98% sulfuric acid is diluted in water, be sprayed on Concave-convex clay rod after sulfuric acid dilution, after stirring, stack 48h;
E, rubbing, extruding
The high-purity attapulgite powder of acidification prepares extruded granule by extruder, keeps 5 minutes, continuously extruding and molding under high pressure 10-40MPa under low pressure 3-5MPa; The long 50mm-200mm of shaped granule size, wide 50mm-200mm, high 50mm-1000mm;
F, roasting
Extruded granule, through 550 DEG C of roasting 2h, naturally cools to normal temperature after pellet dehydrating and curing and obtains finished product.
Embodiment 3
A kind of purification extrusion pressing type concave convex stick ceramic grain filter, comprises the steps:
A, process of selecting materials
Concave-convex clay rod, through airing, makes the moisture content of Concave-convex clay rod be down to 30%-45%;
B, slurrying
Concave-convex clay rod stirs under being added to the water normal temperature, and solid-liquid weight ratio is 1:20, fully stirs 15min slurrying;
C, shearing, dispersion
Dispersant is added in slurries, dispersant is Sodium Polyacrylate, calgon or sodium pyrophosphate, dispersant addition is 3% of Concave-convex clay rod weight, suspension is formed after stirring 15min, this suspension is put in high-speed shearing machine, carries out shearing dispersion, through centrifuge process, get upper strata dewatering slurries after centrifugal dry, obtain high-purity attapulgite powder;
D, acid activation
With high-purity attapulgite powder for raw material, high-purity attapulgite powder, water and sulfuric acid are prepared by weight, high-purity attapulgite powder 65 parts, 50 parts, water, 2 parts, mass fraction 98% sulfuric acid, mass fraction 98% sulfuric acid is diluted in water, be sprayed on Concave-convex clay rod after sulfuric acid dilution, after stirring, stack 48h;
E, rubbing, extruding
The high-purity attapulgite powder of acidification prepares extruded granule by extruder, keeps 10 minutes, continuously extruding and molding under high pressure 10-40MPa under low pressure 3-5MPa; The long 50mm-200mm of shaped granule size, wide 50mm-200mm, high 50mm-1000mm;
F, roasting
Extruded granule, through 550 DEG C of roasting 2h, naturally cools to normal temperature after pellet dehydrating and curing and obtains finished product.
Carried out detecting by the finished product of embodiment 1-3 and add up concrete data, technical parameter is as shown in table 1, is all met the standard of filtering element for treating water by the known above-described embodiment of table 1.Efficient adsorption cleaning can be carried out to pollutant in water body, can also be applied to NOx, VOCs, NH 3, H 2s and SO 2efficiently remove Deng pernicious gas, have that mechanical strength is high, vapour lock is little simultaneously, the advantage such as porosity and specific area is large, adsorption capacity large, good stability, the low renewable repeated use of cost.
Table 1.

Claims (2)

1. a purification extrusion pressing type concave convex stick ceramic grain filter, is characterized in that comprising the steps:
A, process of selecting materials
Concave-convex clay rod, through airing, makes the moisture content of Concave-convex clay rod be down to 30%-45%;
B, slurrying
Concave-convex clay rod stirs under being added to the water normal temperature, and solid-liquid weight ratio is 1:20, fully stirs 15min slurrying;
C, shearing, dispersion
Dispersant is added in slurries, dispersant is Sodium Polyacrylate, calgon or sodium pyrophosphate, dispersant addition is the 0.1-3% of Concave-convex clay rod weight, suspension is formed after stirring 15min, this suspension is put in high-speed shearing machine, carries out shearing dispersion, through centrifuge process, get upper strata dewatering slurries after centrifugal dry, obtain high-purity attapulgite powder;
D, acid activation
With high-purity attapulgite powder for raw material, high-purity attapulgite powder, water and sulfuric acid are prepared by weight, high-purity attapulgite powder 45-65 part, water 35-50 part, mass fraction 98% sulfuric acid 0.5-2 part, mass fraction 98% sulfuric acid is diluted in water, be sprayed on Concave-convex clay rod after sulfuric acid dilution, after stirring, stack 24-48h;
E, rubbing, extruding
The high-purity attapulgite powder of acidification prepares extruded granule by extruder, under low pressure 3-5MPa, keep 1-10 minute, continuously extruding and molding under high pressure 10-40MPa;
F, roasting
Extruded granule, through 450-550 DEG C of roasting 1-2h, naturally cools to normal temperature after pellet dehydrating and curing and obtains finished product.
2. a kind of purification extrusion pressing type concave convex stick ceramic grain filter according to claim 1, is characterized in that the long 50mm-200mm of shaped granule size, wide 50mm-200mm, high 50mm-1000mm in described step e.
CN201510798292.2A 2015-11-19 2015-11-19 Purifying and extruding attapulgite ceramisite filter material Pending CN105396371A (en)

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Application Number Priority Date Filing Date Title
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CN105396371A true CN105396371A (en) 2016-03-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106905055A (en) * 2017-04-11 2017-06-30 安徽博硕科技有限公司 A kind of gardening concave convex rod Nutrition Soil and preparation method thereof
CN107311189A (en) * 2017-06-20 2017-11-03 兰州坤仑环保科技有限公司 A kind of Mixed Concave convex rod and its wet-process purification method
CN108744714A (en) * 2018-07-06 2018-11-06 兰州坤仑环保科技有限公司 A kind of concave convex stick ceramic grain filter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1792429A (en) * 2005-11-01 2006-06-28 南京大学 Method for preparing high-purity attapulgite
CN101230210A (en) * 2007-12-28 2008-07-30 河北工业大学 Method for preparing organic modified silicate mineral clay
CN101711973A (en) * 2008-10-07 2010-05-26 齐齐哈尔大学 Preparation method of modified attapulgite particle retention and filtration aid
CN102247807A (en) * 2011-05-17 2011-11-23 江苏麦阁吸附剂有限公司 Preparation method and usage of modified attapulgite adsorption material
CN102531083A (en) * 2010-12-10 2012-07-04 北京师范大学 Method for treating aureomycin waste water with iron-modified attapulgite adsorbent
EP2752239A1 (en) * 2011-08-31 2014-07-09 Shanghai World-Prospect Chemtech Co. Ltd. Inorganic non-metal mineral composite material carrying titanium dioxide layer, and preparation process and use thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1792429A (en) * 2005-11-01 2006-06-28 南京大学 Method for preparing high-purity attapulgite
CN101230210A (en) * 2007-12-28 2008-07-30 河北工业大学 Method for preparing organic modified silicate mineral clay
CN101711973A (en) * 2008-10-07 2010-05-26 齐齐哈尔大学 Preparation method of modified attapulgite particle retention and filtration aid
CN102531083A (en) * 2010-12-10 2012-07-04 北京师范大学 Method for treating aureomycin waste water with iron-modified attapulgite adsorbent
CN102247807A (en) * 2011-05-17 2011-11-23 江苏麦阁吸附剂有限公司 Preparation method and usage of modified attapulgite adsorption material
EP2752239A1 (en) * 2011-08-31 2014-07-09 Shanghai World-Prospect Chemtech Co. Ltd. Inorganic non-metal mineral composite material carrying titanium dioxide layer, and preparation process and use thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106905055A (en) * 2017-04-11 2017-06-30 安徽博硕科技有限公司 A kind of gardening concave convex rod Nutrition Soil and preparation method thereof
CN107311189A (en) * 2017-06-20 2017-11-03 兰州坤仑环保科技有限公司 A kind of Mixed Concave convex rod and its wet-process purification method
CN108744714A (en) * 2018-07-06 2018-11-06 兰州坤仑环保科技有限公司 A kind of concave convex stick ceramic grain filter

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Application publication date: 20160316