CN112774626A - Ceramic filter particle capable of being regenerated by microwave, preparation method and regeneration method thereof - Google Patents

Ceramic filter particle capable of being regenerated by microwave, preparation method and regeneration method thereof Download PDF

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CN112774626A
CN112774626A CN202011513612.2A CN202011513612A CN112774626A CN 112774626 A CN112774626 A CN 112774626A CN 202011513612 A CN202011513612 A CN 202011513612A CN 112774626 A CN112774626 A CN 112774626A
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powder
parts
ceramic filter
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particle
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CN112774626B (en
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席宗隆
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Wuhu Yidao Precision Machinery Co ltd
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Shanghai Sumate Environmental Protection Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28016—Particle form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
    • 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

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Abstract

The invention discloses a ceramic filter particle capable of being regenerated by microwave, a preparation method and a regeneration method thereof, wherein the ceramic filter particle capable of being regenerated by microwave comprises the following raw material components: 20-25 parts of aluminum oxide powder, 20-25 parts of high-purity silicon dioxide powder, 15-20 parts of coal activated carbon powder, 5-10 parts of zeolite powder, 5-10 parts of industrial-grade kaolin powder, 5 parts of industrial-grade anhydrous lithium chloride powder, 5 parts of monocrystalline silicon powder, 8-14 parts of sodium silicate solution, 35-40 parts of water and 0.3-0.8 part of physical foaming agent, wherein the percentages are parts by mass. The ceramic filter particles of the invention have light density, good adsorption effect and high strength, and can be regenerated under the microwave irradiation condition.

Description

Ceramic filter particle capable of being regenerated by microwave, preparation method and regeneration method thereof
Technical Field
The invention relates to a ceramic filter particle capable of being regenerated by microwave, a preparation method and a regeneration method thereof, belonging to the field of regenerated filter materials.
Background
The water treatment mode comprises physical treatment, chemical treatment and biological treatment. Chemical treatment inevitably causes secondary pollution, and biological treatment is high in cost, while physical treatment is a safer treatment mode.
The polluted water source is treated by the adsorption of the filter material as one of the physical treatment modes, and the application is wide. The ceramic particle filter material has high strength and good adsorption capacity, is a filter material with ideal treatment effect, is mostly disposable at present, has high use cost, and is generally only used in the field of high-end water purification, such as public landscape fountain, advanced fish tank culture water purification, drinking direct drinking water purification and the like.
Disclosure of Invention
The invention provides a ceramic filter particle capable of being regenerated by microwave, a preparation method and a regeneration method thereof.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a microwave-regenerable ceramic filter particle comprising the raw material components of: 20-25 parts of aluminum oxide powder, 20-25 parts of high-purity silicon dioxide powder, 15-20 parts of coal activated carbon powder, 5-10 parts of zeolite powder, 5-10 parts of industrial-grade kaolin powder, 5 parts of industrial-grade anhydrous lithium chloride powder, 5 parts of monocrystalline silicon powder, 8-14 parts of sodium silicate solution, 35-40 parts of water and 0.3-0.8 part of physical foaming agent, wherein the percentages are parts by mass.
The purity of the high-purity silica powder was 99.9%. In this application, the percentages are by mass unless otherwise specified.
The applicant has found that the above-mentioned alumina powder and high-purity silica powder act as a main aggregate to reinforce the main structure in the granule; the coal-based activated carbon powder, the zeolite powder and the industrial-grade kaolin powder are used as adsorption materials, the adsorption effect is realized in the particles, the adsorption capacity of the ceramic particles is enhanced, micro cavities are formed by adopting a physical foaming technology during the preparation of the ceramic particles, and the adsorption capacity is further optimized by matching with the adsorption materials; the industrial-grade anhydrous lithium chloride powder and the monocrystalline silicon powder are microwave excitation materials, and the ceramic particles are heated and released heat rapidly under the microwave condition; water and sodium silicate solution are used as adhesives, and a physical foaming agent is used for foaming and foaming to improve the adsorption capacity of the ceramic particles; through the synergistic promotion of the materials, the light, high-porosity and high-adsorption granular material is obtained, and can be pyrolyzed and regenerated under the microwave irradiation condition.
In order to further improve the porosity and structural strength of the filter material, the fineness of the aluminum oxide powder is preferably 150-200 meshes; the fineness of the high-purity silicon dioxide powder is 600-800 meshes; the fineness of the coal activated carbon powder is 150-200 meshes; the fineness of the zeolite powder is 400-600 meshes; the fineness of the technical grade kaolin powder was 4000.
The adsorption iodine value of the ceramic filter particles capable of being regenerated by microwave is 600-700 mg/g. The iodine value of the adsorbent is equivalent to that of coconut shell honeycomb activated carbon.
The compressive strength of the ceramic filter particles capable of being regenerated by microwave is more than 4.5 MPa. Can meet the strength without damage in the transportation and replacement process.
The preparation method of the ceramic filter particles capable of being regenerated by microwaves comprises the following steps:
1) putting a sodium silicate solution, water and a physical foaming agent into a foaming machine for liquid foaming;
2) adding alumina powder, high-purity silicon dioxide powder, coal activated carbon powder, zeolite powder, industrial kaolin powder, industrial anhydrous lithium chloride powder and monocrystalline silicon powder into the material obtained in the step 1), and stirring and foaming to form foaming slurry;
3) pouring the foaming slurry obtained in the step 2) into a particle mould, then baking the particle mould for 2-6 minutes under the condition of microwave irradiation,
4) taking out the particles in the particle mold in the step 3), and preserving the heat for 5-8 hours in an environment of 40-50 ℃;
5) calcining the particles obtained in the step 4) to obtain the ceramic filter particles capable of being regenerated by microwaves.
The comprehensive density of the raw materials is 1100kg/m3About, the material density of the microwave regenerated ceramic filter particles prepared by the preparation process is 400-450kg/m3The bulk density is 300-350kg/m3. In the filter material industry, density is relatively intuitive data, and low density indicates that particles have a porous structure and are easier to adsorb.
In the step 2), the mixture is stirred and foamed for about 5 minutes.
In the step 3), the granulating particle size of the granulator is adjustable, and the three specifications of 10mm,20mm and 30mm are preferred in the application.
In the step 3), the particles in the particle die are baked for 2-6 minutes under the condition of microwave irradiation, so that early solidification can be completed, and the principle is that the sodium silicate solution can be hardened and solidified for 2-6 minutes under the condition of microwave, so that the ceramic particles have the strength of being taken out of the die and conveyed; the preferable microwave irradiation temperature is 40-50 ℃.
In order to further ensure the structural strength of the ceramic filter particles, in step 5), the calcination is: and (3) heating to 800 +/-30 ℃ for 25-35 minutes, preserving the heat for 50 minutes, then cooling to 40-50 ℃ from 800 +/-330 ℃ for 35-45 minutes, and discharging to obtain the ceramic filter particles capable of being regenerated by microwaves.
The regeneration method of the ceramic filter particles capable of microwave regeneration pyrolyzes for 6-8 hours under the microwave irradiation condition of 800-900 ℃.
The prior art is referred to in the art for techniques not mentioned in the present invention.
The ceramic filter particles capable of being regenerated by microwaves can be placed into a microwave high-temperature pyrolysis furnace to be subjected to high-temperature regeneration activation at the temperature of 900 ℃ (hearth temperature) through 800 plus materials after the ceramic particles are adsorbed and saturated, microwave excitation materials are uniformly mixed in the composite ceramic particles, the self heat release of the ceramic particles reaches 1000 ℃ under the microwave condition, heat radiation from inside to outside is formed, organic matters adsorbed in the particles are easier to evaporate and release, the activity of the particle materials is recovered, the composite ceramic particles can be recycled, the use cost of the ceramic particles can be well reduced, the water purification cost is further reduced, and meanwhile, the heat release of the particles greatly improves the heat efficiency of the activation furnace, so that the use cost of the ceramic particles is greatly reduced; the filter material and the microwave filter tank are used simultaneously, and can be directly activated and regenerated for recycling in the microwave filter tank without taking out the filter material and putting the filter material in the microwave filter tank again, so that the filter material saves labor, is easy to operate and is suitable for civil use; can be used for small-scale residential buildings without public water and pollution discharge, such as landscapes, mountainous areas, sea villas, residential accommodations, convention centers and the like; the requirement of domestic water purification and recycling can be met by matching with microwave pyrolysis equipment, and the purified water body can be used for landscape fountain, greening irrigation, cleaning and flushing and the like.
Drawings
FIG. 1 is a graph showing the appearance of microwave-regenerable ceramic filter particles obtained in example 1;
FIG. 2 is a schematic structural diagram of a water purification tank in an embodiment;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
in the figure, 1 is a shell, 2 is an inner cavity, 3 is a microwave emission source, 4 is a microwave waveguide, 5 is a water inlet pipe, 6 is a water outlet pipe, 7 is a gas outlet pipe, 8 is a filter element, and 9 is an aluminum silicate asbestos layer.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
In each case, the alumina powder was obtained from friction materials factory, Yaobao, Changzhou, with a fineness of 150-; high purity silicon dioxide powder purchased from quartz technology ltd, great, port, clouds, fineness 600-; the coal activated carbon powder is purchased from Jinjiang water purification materials Co., Ltd, of the consolidated city, and the fineness is 150-; zeolite powder, purchased from commercial Limited, Lehua, Changzhou city, fineness 400-; technical-grade kaolin powder, purchased from Xing birch kaolin GmbH, Qingshui river county, with a fineness of 4000 meshes; commercial grade anhydrous lithium chloride powder, available from Nanjing Sitobao trade, Inc.; single crystal silicon powder, available from kunshan xu crystal photovoltaic materials ltd; the sodium silicate solution is purchased from Jiangsu Kangxiang practical group, the modulus is 3.4, and the mass concentration is 28 percent; physical blowing agents, available from nicotiana saidi re ltd, SAIDY/saidi, HF 30;
example 1
A microwave-regenerable ceramic filter particle comprises the following raw material components: 22 parts of alumina powder, 23 parts of high-purity silicon dioxide powder, 18 parts of coal activated carbon powder, 8 parts of zeolite powder, 7 parts of industrial-grade kaolin powder, 5 parts of industrial-grade anhydrous lithium chloride powder, 5 parts of monocrystalline silicon powder, 12 parts of sodium silicate solution, 38 parts of water and 0.5 part of physical foaming agent, wherein the percentages are parts by mass.
Example 2
A microwave-regenerable ceramic filter particle comprises the following raw material components: 25 parts of alumina powder, 20 parts of high-purity silicon dioxide powder, 20 parts of coal activated carbon powder, 5 parts of zeolite powder, 10 parts of industrial-grade kaolin powder, 5 parts of industrial-grade anhydrous lithium chloride powder, 5 parts of monocrystalline silicon powder, 10 parts of sodium silicate solution, 40 parts of water and 0.5 part of physical foaming agent, wherein the percentages are parts by mass.
In each of the above examples, the method for preparing the ceramic filter particles capable of being regenerated by microwave includes the following steps:
1) putting a sodium silicate solution, water and a physical foaming agent into a foaming machine for liquid foaming;
2) adding alumina powder, high-purity silicon dioxide powder, coal activated carbon powder, zeolite powder, industrial kaolin powder, industrial anhydrous lithium chloride powder and monocrystalline silicon powder into the material obtained in the step 1), and stirring and foaming for about 5 minutes to form foaming slurry;
3) pouring the foaming slurry obtained in the step 2) into a particle mould, then baking the particle mould for 5 minutes at 45 ℃ under the condition of microwave irradiation,
4) taking out the particles in the particle mould in the step 3), and preserving the heat for 5-8 hours at the temperature of 40 ℃;
5) calcining the particles obtained in the step 4), wherein the calcining conditions are as follows: and (3) heating to 800 ℃ for 30 minutes, maintaining the temperature at 800 ℃ for 50 minutes, then cooling to 40-50 ℃ from 800 ℃ for 40 minutes, and discharging to obtain the ceramic filter particles capable of being regenerated by microwaves, wherein the filter material with a gap structure is formed as shown in figure 1.
Respectively adjusting particle molds, and respectively preparing the ceramic filter particles with the particle diameters of 10mm,20mm and 30mm from the examples 1-2, wherein the ceramic filter particles can be regenerated by microwaves; the density of each granular material is tested to be 400-450kg/m3The bulk density is 300-350kg/m3The particles are low-density particles, which shows that the particles have a porous structure and are easy to adsorb; the iodine value of each particle is 600-700mg/g, and the adsorption capacity of the particles is equal to that of the coconut shell beesIodine adsorption value of the pit activated carbon is equivalent; the porosity of each particle reaches 40%, and the compressive strength is more than 4.5MPa, so that the strength which cannot be damaged in the transportation and replacement process can be met; pyrolyzing the ceramic filter particles which are saturated in adsorption and can be regenerated by microwave for 8 hours under the microwave irradiation condition of 800-900 ℃, and recovering the adsorption effect by more than 91.2 percent.
As shown in fig. 2-3, a water purification tank for a small-scale microwave renewable filter material for civil use comprises a shell, an inner cavity, a microwave emission source (samsung OM75P (11) water-cooled magnetrons, 1 kw/piece), a microwave waveguide, a water inlet pipe, a water outlet pipe and a gas outlet pipe; the inner cavity is arranged at the inner side of the shell, the inner cavity and the shell are coaxially arranged, the cross sections of the inner cavity and the shell are regular hexagons, and the density of 0.4-0.5t/m is filled between the inner cavity and the shell3An aluminum silicate asbestos layer (available from galleries pioneer insulation limited); a reproducible filter element (prepared in example 1) is arranged in the inner cavity; the microwave emission source is arranged on the side wall of the shell, one end of the microwave waveguide is communicated with the inner cavity, and the other end of the microwave waveguide is connected with the microwave emission source; one end of each of the water inlet pipe, the water outlet pipe and the air outlet pipe is communicated with the inner cavity, the other end of each of the water inlet pipe, the water outlet pipe and the air outlet pipe penetrates out of the shell, the water inlet pipe and the water outlet pipe are respectively arranged at the upper end and the lower end of the inner cavity, and the air outlet pipe.
The side surfaces of the shell correspond to the side surfaces of the inner cavity one by one, and the side surfaces of the shell are parallel to the side surfaces of the inner cavity corresponding to the side surfaces of the shell; the three groups of wave emission sources are respectively arranged on three side surfaces of the shell, and the three side surfaces provided with the wave emission sources are not adjacent; each group of wave emission sources has four wave emission sources, and the total number of the wave emission sources is 12; the microwave waveguide is made of 310S stainless steel; the filter element in the inner cavity is a ceramic filter element, the ceramic granules used by the ceramic filter element are graded ceramic granules, the graded ceramic granules comprise 20% of ceramic granules with the grain diameter of 10mm, 20% of ceramic granules with the grain diameter of 20mm and 60% of ceramic granules with the grain diameter of 30mm, and the ceramic granules are prepared by the method of example 1; the inner cavity is made of 310S stainless steel, and the shell is made of 304 stainless steel. The radius of the circumcircle of the inner cavity is 400mm, and the radius of the circumcircle of the outer shell is 650 mm. The device has the advantages of 1800mm total height, 1300mm total width, 1150mm total length, small occupied area, small size, flexibility and convenient carrying, can be used for small-scale residential buildings without public water and sewage discharge, such as landscape, mountain areas, seaside villas, residential accommodations, convention centers and the like, and the purified water body is used for landscape fountains, greening irrigation, cleaning and flushing and the like.
When in use, the water to be treated is conveyed by the power pump, enters the inner cavity through the water inlet pipe, is filtered by the filter element in the inner cavity, and is discharged from the water outlet pipe after reaching the standard (reaching the industrial water standard), and the water after being purified can be used for landscape fountain, greening irrigation, clean flushing and the like; when the water body discharged by the water outlet pipe does not reach the standard, stopping water inflow, starting a microwave emission source, and pyrolyzing pollutants on the filter element by using energy generated by microwave emission to achieve an activation effect; then starting water inflow again, continuing the treatment, and circulating the steps. The water purification amount is 1.5-2 tons per day, the requirement of small civil facilities can be met, the regeneration and activation are carried out for 30-40 days continuously, the activation time is 8 hours each time, only all microwave emission sources are needed to be started, the operation is simple and convenient, the filtration and the activation are integrated, the in-situ water purification and in-situ activation are realized, and the disassembly and the assembly are not needed during the activation, and the operation is simple and convenient; no need of adding medicament and biological bacteria, low cost and no secondary pollution.

Claims (10)

1. A microwave-regenerable ceramic filter particle, comprising: the raw material components comprise: 20-25 parts of aluminum oxide powder, 20-25 parts of high-purity silicon dioxide powder, 15-20 parts of coal activated carbon powder, 5-10 parts of zeolite powder, 5-10 parts of industrial-grade kaolin powder, 5 parts of industrial-grade anhydrous lithium chloride powder, 5 parts of monocrystalline silicon powder, 8-14 parts of sodium silicate solution, 35-40 parts of water and 0.3-0.8 part of physical foaming agent, wherein the percentages are parts by mass.
2. The microwaveable ceramic filter particle of claim 1, wherein: the fineness of the alumina powder is 150-200 meshes; the fineness of the high-purity silicon dioxide powder is 600-800 meshes.
3. The microwavable ceramic filter particle of claim 1 or 2, wherein: the fineness of the coal activated carbon powder is 150-200 meshes; the fineness of the zeolite powder is 400-600 meshes; the fineness of the technical grade kaolin powder was 4000.
4. The microwavable ceramic filter particle of claim 1 or 2, wherein: the material density is 400-450kg/m3Bulk density of 300-350kg/m3。
5. The microwavable ceramic filter particle of claim 1 or 2, wherein: the adsorption iodine value is 600-700 mg/g.
6. The microwavable ceramic filter particle of claim 1 or 2, wherein: the compressive strength is more than 4.5 MPa.
7. The method of making microwaveable ceramic filter particles of any one of claims 1 to 6, wherein: the method comprises the following steps:
1) putting a sodium silicate solution, water and a physical foaming agent into a foaming machine for liquid foaming;
2) adding alumina powder, high-purity silicon dioxide powder, coal activated carbon powder, zeolite powder, industrial kaolin powder, industrial anhydrous lithium chloride powder and monocrystalline silicon powder into the material obtained in the step 1), and stirring and foaming to form foaming slurry;
3) pouring the foaming slurry obtained in the step 2) into a particle mould, then baking the particle mould for 2-6 minutes under the condition of microwave irradiation,
4) taking out the particles in the particle mold in the step 3), and preserving heat for 5-8 hours at the temperature of 40-50 ℃;
5) calcining the particles obtained in the step 4) to obtain the ceramic filter particles capable of being regenerated by microwaves.
8. The method according to claim 7, wherein the microwave irradiation temperature in step 3) is 40-50 ℃.
9. The method of claim 7, wherein in step 5) the calcination is: and (3) heating to 800 +/-30 ℃ for 25-35 minutes, preserving the heat for 50 minutes, then cooling to 40-50 ℃ from 800 +/-330 ℃ for 35-45 minutes, and discharging to obtain the ceramic filter particles capable of being regenerated by microwaves.
10. The method of regenerating a microwaveable ceramic filter particle of any one of claims 1 to 6, wherein: and pyrolyzing for 6-8 h under the microwave irradiation condition at the temperature of 800-.
CN202011513612.2A 2020-12-21 2020-12-21 Ceramic filter particle capable of being regenerated by microwaves, preparation method thereof and regeneration method thereof Active CN112774626B (en)

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CN104692780A (en) * 2015-03-12 2015-06-10 夏嵩 Microwave oxygen-free heating material and preparation method thereof
US20180043329A1 (en) * 2015-07-07 2018-02-15 Carbonxt, Inc. High mechanical strength sorbent product, system, and method for controlling multiple pollutants from process gas
CN108402312A (en) * 2018-03-08 2018-08-17 卢亮 A kind of feeder acidulant coating method
CN109248650A (en) * 2018-09-26 2019-01-22 芜湖市鹏磊新材料有限公司 A kind of bentonite processing method increasing organic matter absorption property
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