CN111153511A - Aeration disc and preparation method thereof - Google Patents

Aeration disc and preparation method thereof Download PDF

Info

Publication number
CN111153511A
CN111153511A CN201911365263.1A CN201911365263A CN111153511A CN 111153511 A CN111153511 A CN 111153511A CN 201911365263 A CN201911365263 A CN 201911365263A CN 111153511 A CN111153511 A CN 111153511A
Authority
CN
China
Prior art keywords
aeration disc
curing agent
curing
silica sand
microwave
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
CN201911365263.1A
Other languages
Chinese (zh)
Inventor
秦升益
李张飞
蔡小蓓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renchuang Eco Technology Co ltd
Original Assignee
Renchuang Eco 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 Renchuang Eco Technology Co ltd filed Critical Renchuang Eco Technology Co ltd
Priority to CN201911365263.1A priority Critical patent/CN111153511A/en
Publication of CN111153511A publication Critical patent/CN111153511A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/22—O2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Epoxy Resins (AREA)

Abstract

The invention relates to the field of water treatment, in particular to an aeration disc and a preparation method thereof. The preparation method of the aeration disc provided by the invention comprises the step of carrying out microwave curing on the crude blank of the aeration disc, wherein the microwave curing temperature is 80-150 ℃, and the microwave curing time is 3-20 minutes. According to the preparation method of the aeration disc, the microwave curing is carried out on the rough blank of the aeration disc under the conditions that the microwave curing temperature is 80-150 ℃ and the microwave curing time is 3-20 minutes, so that the internal temperature and the external temperature of the aeration disc are basically consistent, the compressive strength of the aeration disc is obviously improved, and meanwhile, compared with the oven curing, the curing time is greatly shortened, and the production efficiency is greatly improved.

Description

Aeration disc and preparation method thereof
Technical Field
The invention relates to the field of water treatment, in particular to an aeration disc and a preparation method thereof.
Background
The aeration disc, also called as gas-liquid mixer, is a tool for increasing the oxygen content of sewage in the water treatment process, and is widely applied to the biochemical treatment process of industrial sewage and urban domestic sewage. With the development of industry and people's living standard, industrial sewage and urban domestic sewage become important factors of water body pollution, and especially industrial sewage seriously threatens the safety and health of human beings. In order to make the discharged water of sewage reach the relevant national discharge standard or be recycled as regenerated water resource, many companies put a great amount of scientific research efforts on the processing and recycling process equipment of the wastewater, in particular to an aeration disc of sewage biochemical treatment equipment.
The aeration disc that uses among the prior art is mainly micropore aeration disc, and this kind of aeration disc structure is complicated, and the cost of manufacture is high, and compressive strength is lower, the ability of blocking water is relatively poor, and the gas-liquid mixing ability of aeration disc is poor simultaneously, leads to biochemical medium lifting capacity weak, has seriously influenced biochemical medium's throughput and sewage purification effect, in addition, because the aeration disc is in the sewage for a long time, the micropore is easy to be blockked up in the effluent water sump to can seriously influence aeration equipment's life and result of use. Meanwhile, in the existing preparation method of the aeration disc, the oven is mostly adopted to cure the rough blank of the aeration disc, the curing time is long, and the improvement on the compressive strength of the aeration disc is limited.
Disclosure of Invention
The invention aims to overcome the defects that the curing time is long and the improvement on the compressive strength of an aeration disc is limited when an oven is used for curing the aeration disc blank in the existing preparation method of the aeration disc, thereby providing the aeration disc and the preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the preparation method of the aeration disc comprises the step of carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 80-150 ℃, and the microwave curing time is 3-20 minutes.
Further, the microwave curing temperature is 100-140 ℃, and the microwave curing time is 3-15 minutes.
Further, the method also comprises a step of preparing the aeration disc rough blank, and the step of preparing the aeration disc rough blank comprises the following steps:
1) mixing a binder and a curing agent to obtain a first mixed material;
2) adding the first mixed material into silica sand, and stirring to obtain a second mixed material;
3) and adding the second mixed material into a mold, and unloading the pressure after pressurizing and pressing to obtain the aeration disc rough blank.
Further, the pressure of the pressure pressing is 2000-4000N/cm2And the time for pressing is 0.5-5 min.
Further, the dosage of the binder, the curing agent and the silica sand is as follows: the usage amount of the binder is 1-30 parts by weight and the usage amount of the curing agent is 0.1-4 parts by weight relative to 100 parts by weight of silica sand;
preferably, the usage amounts of the binder, the curing agent and the silica sand are as follows: the usage of the binder is 6-24 parts by weight and the usage of the curing agent is 0.15-2 parts by weight relative to 100 parts by weight of silica sand.
The present invention is not particularly limited in the kind of the binder, and various binders capable of binding silica sand together can be used in the present invention to achieve the object of the present invention. Preferably, the binder is selected from one or more of epoxy resin, modified epoxy resin, polyvinylidene fluoride resin, water glass, acrylic resin, modified acrylic resin, polyurethane resin and portland cement.
The kind of the curing agent is not particularly limited in the present invention, and preferably, the curing agent is one or more selected from the group consisting of an amine-type curing agent, an acid anhydride-type curing agent, aluminum polyphosphate, sodium fluorosilicate and urotropine.
Further, the binder is modified acrylic resin and/or modified epoxy resin;
the curing agent is an amine curing agent and/or an anhydride curing agent;
preferably, the amine-type curing agent is at least one selected from the group consisting of ethylenediamine, trimethylhexamethylenediamine, hexamethylenetetramine, diethyltriamine, hydroxymethylethylenediamine, hydroxyethylethylenediamine, dihydroxyethylethylenediamine, hydroxyethyldiethylenetriamine, dihydroxyethyldiethylenetriamine, hydroxyethylethylenediamine, cyanoethylethylenediamine, dicyanoethylethylenediamine, dicyanoethylhexamethylenediamine, dicyandiamide, cyclohexanediamine, menthanediamine, aminoethylpiperazine, isophoronediamine, and diaminocyclohexane; the acid anhydride type curing agent is at least one selected from methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, succinic anhydride and adipic anhydride.
Further, the adhesive is bisphenol A type modified epoxy resin, the epoxy value of the bisphenol A type modified epoxy resin is 0.09-0.55mol/100g, and the weight average molecular weight is 500-10000;
the curing agent is an amine curing agent.
Preferably, the epoxy value of the bisphenol A type modified epoxy resin is 0.3 to 0.55mol/100 g.
Preferably, the bisphenol A type modified epoxy resin has a weight average molecular weight of 800-5000. In the present invention, when the binder is a modified epoxy resin, the curing agent is preferably the above amine-type curing agent.
In the invention, the silica sand can be various conventional silica sands, preferably, the silica sand is selected from at least one of aeolian sand, river sand and sea sand, and the particle diameter of the silica sand is 0.02-2 mm; the particle diameter of the preferred silica sand is 0.02-1 mm.
The invention provides an aeration disc which is manufactured by adopting the method.
The aeration disc in the present invention may be prepared by a conventional method, for example, mixing silica sand, a binder and a curing agent according to the present invention, and then molding the mixture. The thickness of the aeration disc is not particularly limited in the present invention, and those skilled in the art can secondarily determine the thickness according to the thickness of the aeration disc in practical use.
The invention has the beneficial effects that:
1) according to the preparation method of the aeration disc, the microwave curing is carried out on the rough blank of the aeration disc under the conditions that the microwave curing temperature is 80-150 ℃ and the microwave curing time is 3-20 minutes, so that the internal temperature and the external temperature of the aeration disc are basically consistent, the compressive strength of the aeration disc is obviously improved, and meanwhile, compared with the oven curing, the curing time is greatly shortened, and the production efficiency is greatly improved.
2) The preparation method of the aeration disc provided by the invention further comprises the step of curing the microwave at the temperature of 100 ℃ and 140 ℃ for 3-15 minutes. Under the specific microwave curing condition, the compressive strength of the aeration disc is further improved.
3) The preparation method of the aeration disc provided by the invention further comprises the step of preparing an aeration disc blank, wherein a first mixed material obtained by mixing a binder and a curing agent is added into silica sand, and then the silica sand is mixed with a second mixed materialAnd pressurizing in the die to obtain an aeration disc rough blank which is adaptive to microwave curing and is more favorable for improving the compressive strength of the aeration disc. Preferably, the pressure of the pressure pressing is 2000-4000N/cm2And the time for pressing is 0.5-5 min. The coarse blank of the aeration disc prepared under the specific pressurizing condition has uniform texture, is beneficial to microwave curing to ensure that the internal and external temperatures are consistent, and further improves the compressive strength of the aeration disc.
4) The preparation method of the aeration disc provided by the invention further comprises the following steps of: the usage amount of the binder is 1-30 parts by weight and the usage amount of the curing agent is 0.1-4 parts by weight relative to 100 parts by weight of silica sand; preferably, the usage amounts of the binder, the curing agent and the silica sand are as follows: the usage of the binder is 6-24 parts by weight and the usage of the curing agent is 0.15-2 parts by weight relative to 100 parts by weight of silica sand. According to a great deal of research, the prepared aeration disc rough blank is more suitable for microwave curing under the condition of the specific dosage, so that the compression strength of the aeration disc is improved, and meanwhile, the production cost cannot be greatly increased.
5) The preparation method of the aeration disc provided by the invention is further characterized in that the binder is selected from one or more of epoxy resin, modified epoxy resin, polyvinylidene fluoride resin, water glass, acrylic resin, modified acrylic resin, polyurethane resin and silicate cement; the curing agent is selected from one or more of amine curing agent, anhydride curing agent, aluminum polyphosphate, sodium fluosilicate and urotropine. The inventor finds that under the action of the specific binder and the curing agent, the silica sand is matched with the specific binder and the curing agent to prepare an aeration disc blank, the obtained aeration disc blank is cured under the specific microwave curing condition of the invention, so that the compressive strength of the aeration disc can be further improved, and meanwhile, the inventor finds that the specific binder and the curing agent are matched with the silica sand to prepare the aeration disc blank which has excellent water resistance after being cured by microwave, and the aeration effect is good.
5) The preparation method of the aeration disc provided by the invention is further characterized in that the adhesive is bisphenol A type modified epoxy resin, the epoxy value of the bisphenol A type modified epoxy resin is 0.09-0.55mol/100g, and the weight average molecular weight is 500-10000; the curing agent is an amine curing agent. The inventor finds that the specific bisphenol A modified epoxy resin is matched with the amine curing agent and the silica sand to prepare the aeration disc blank which can be better matched with a microwave curing process, and the inventor finds that under the specific curing temperature condition, the bisphenol A modified epoxy resin has a strong heat effect in a microwave field, can realize rapid temperature rise, is matched with the amine curing agent and the silica sand to obtain the resin with high collision and condensation probability among active groups, has a short molecular chain of uncured or low-curing-degree resin, and becomes a spatial network structure along with the growth of the molecular chain of the resin, so that the curing efficiency and the compressive strength of the aeration disc blank are greatly improved, and the curing time is greatly shortened. Tests show that under the conditions that the microwave curing temperature is 100-.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
In the following examples of the present invention, the bisphenol a-type modified epoxy resin was purchased from zibo sha chemical trade ltd; the modified acrylic resin is purchased from Beijing Kinjui applied chemical products Co.Ltd; the hydraulic machine with the model number of YAW4605 is purchased from Shanghai New Miss measuring instruments manufacturing Co., Ltd; the oven was purchased from Zhongshan Kaixuan vacuum technology engineering Co.
Example 1:
the embodiment provides a preparation method of an aeration disc, which comprises the following steps:
1) adding 0.8kg of ethylenediamine to 5kg of bisphenol A type modified epoxy resin (epoxy value of 0.09-0.14mol/100g, weight average molecular weight 500) to obtain a cement solution (first mixed material);
2) adding the glue solution into 100kg of silica sand with the particle diameter of 0.06mm, and uniformly stirring and mixing to obtain a second mixed material;
3) adding the second mixed material into a steel mould, and pressing the second mixed material under pressure at 20 ℃ by using a hydraulic press with the model of YAW4605, wherein the pressure of the pressure pressing is 3000N/cm2The time of the pressurization pressing is 1min, and then the pressure is relieved to obtain the aeration disc rough blank;
4) and carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 130 ℃, the microwave curing time is 8 minutes, and removing the mold after microwave curing to obtain the aeration disc.
Example 2:
the embodiment provides a preparation method of an aeration disc, which comprises the following steps:
1) adding 1kg of hydroxymethyl ethylenediamine into 7kg of bisphenol A type modified epoxy resin (epoxy value of 0.09-0.14mol/100g, weight average molecular weight of 500) to obtain a glue solution (first mixed material);
2) adding the glue solution into 100kg of silica sand with the particle diameter of 1.2mm, and uniformly stirring and mixing to obtain a second mixed material;
3) adding the second mixed material into a steel mould, and pressing the second mixed material under pressure at 20 ℃ by using a hydraulic press with the model of YAW4605, wherein the pressure of the pressure pressing is 3000N/cm2The time of the pressurization pressing is 1min, and then the pressure is relieved to obtain the aeration disc rough blank;
4) and carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 140 ℃, the microwave curing time is 3 minutes, and removing the mold after microwave curing to obtain the aeration disc.
Example 3:
the embodiment provides a preparation method of an aeration disc, which comprises the following steps:
1) adding 2kg of hydroxyethyl ethylenediamine into 1kg of modified acrylic resin to obtain a glue solution (a first mixed material);
2) adding the glue solution into 100kg of river sand with the particle diameter of 1.2mm, and uniformly stirring and mixing to obtain a second mixed material;
3) adding the second mixed material into a steel mould, and pressing the second mixed material at 20 ℃ by using a hydraulic press with the model of YAW4605, wherein the pressure of the pressing is 2000N/cm2The time of the pressurization pressing is 5min, and then the pressure is relieved to obtain the aeration disc rough blank;
4) and carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 80 ℃, the microwave curing time is 20 minutes, and removing the mold after microwave curing to obtain the aeration disc.
Example 4:
the embodiment provides a preparation method of an aeration disc, which comprises the following steps:
1) adding 0.1kg of hydroxymethyl ethylenediamine into 24kg of modified acrylic resin to obtain a glue solution (a first mixed material);
2) adding the glue solution into 100kg of river sand with the particle diameter of 1mm, and uniformly stirring and mixing to obtain a second mixed material;
3) adding the second mixed material into a steel mould, and pressing the second mixed material under the pressure of 4000N/cm at 20 ℃ by using a hydraulic press with the model of YAW46052The time of the pressure pressing is 0.5min, and then the pressure is removed to obtain the aeration disc rough blank;
4) and carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 150 ℃, the microwave curing time is 3 minutes, and removing the mold after microwave curing to obtain the aeration disc.
Example 5:
the embodiment provides a preparation method of an aeration disc, which comprises the following steps:
1) adding 0.15kg of hydroxymethyl ethylenediamine into 30kg of bisphenol A type modified epoxy resin (epoxy value of 0.09-0.3mol/100g, weight average molecular weight of 2000) to obtain a glue solution (first mixed material);
2) adding the glue solution into 100kg of silica sand with the particle diameter of 2mm, and uniformly stirring and mixing to obtain a second mixed material;
3) adding the second mixed material into a steel mould, and pressing the second mixed material at 20 ℃ by using a hydraulic press with the model of YAW4605, wherein the pressure of the pressing is 3500N/cm2The time of the pressure pressing is 2min, and then the pressure is relieved to obtain the aeration disc rough blank;
4) and carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 100 ℃, the microwave curing time is 8 minutes, and removing the mold after microwave curing to obtain the aeration disc.
Example 6:
the embodiment provides a preparation method of an aeration disc, which comprises the following steps:
1) adding 4kg of hydroxymethyl ethylenediamine into 6kg of bisphenol A type modified epoxy resin (epoxy value of 0.3-0.55mol/100g, weight average molecular weight of 10000) to obtain a glue solution (first mixed material);
2) adding the glue solution into 100kg of silica sand with the particle diameter of 0.02mm, and uniformly stirring and mixing to obtain a second mixed material;
3) adding the second mixed material into a steel mould, and pressing the second mixed material at 20 ℃ by using a hydraulic press with the model of YAW4605, wherein the pressure of the pressing is 2500N/cm2The time of the pressurization pressing is 3min, and then the pressure is relieved to obtain the aeration disc rough blank;
4) and carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 140 ℃, the microwave curing time is 5 minutes, and removing the mold after microwave curing to obtain the aeration disc.
Comparative example 1:
the comparative example provides a preparation method of an aeration disc, compared with example 1, the preparation method only comprises the steps of curing the aeration disc rough blank obtained in the step 3) in a curing oven at the curing temperature of 130 ℃ for 8 hours, and removing a mold after curing to obtain the aeration disc.
Comparative example 2:
this comparative example provides a method for preparing an aeration disc, which differs from example 1 only in that: the microwave curing temperature was 70 ℃.
Comparative example 3:
this comparative example provides a method for preparing an aeration disc, which differs from example 1 only in that: the addition amount of the bisphenol A type modified epoxy resin is 0.5 kg.
Performance testing
The aeration disks obtained in the above examples and comparative examples were subjected to tests for compressive strength and water-blocking property. The results are shown in Table 1. The compression strength of the aeration disc is determined according to a method specified by JC/T945-2005, the water blocking height of the aeration disc is determined according to a fluid pressure method, namely the aeration disc is placed on a cylindrical glass tube with the height of 10 cm, glass tubes with the same size and different heights of 1-4 m are connected on the aeration disc, a device is used for fixing the joint, water is continuously injected into the glass tubes with the same size until the water seepage phenomenon occurs on one surface of the aeration disc close to the cylindrical glass tube, the water injection is stopped, and the water injecting height in the glass tubes with the same size is detected according to the size marked on the glass tubes with the same size, namely the water blocking height of the aeration disc.
TABLE 1 compression strength and water blocking height of aeration disks obtained in examples and comparative examples
Figure BDA0002338251080000071
Figure BDA0002338251080000081
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. The preparation method of the aeration disc is characterized by comprising the step of carrying out microwave curing on the aeration disc rough blank, wherein the microwave curing temperature is 80-150 ℃, and the microwave curing time is 3-20 minutes.
2. The method for preparing an aeration disc according to claim 1, wherein the microwave curing temperature is 100 ℃ and 140 ℃, and the microwave curing time is 3-15 minutes.
3. The method of producing an aerated plate according to claim 1 or 2, further comprising a step of producing an aerated plate blank, the step of producing an aerated plate blank comprising:
1) mixing a binder and a curing agent to obtain a first mixed material;
2) adding the first mixed material into silica sand, and stirring to obtain a second mixed material;
3) and adding the second mixed material into a mold, and unloading the pressure after pressurizing and pressing to obtain the aeration disc rough blank.
4. The method as claimed in claim 3, wherein the pressure of the pressurized pressing is 2000-4000N/cm2And the time for pressing is 0.5-5 min.
5. The method for preparing the aeration disc according to the claim 3 or 4, wherein the adhesive, the curing agent and the silica sand are used in the following amounts: the usage amount of the binder is 1-30 parts by weight and the usage amount of the curing agent is 0.1-4 parts by weight relative to 100 parts by weight of silica sand;
preferably, the usage amounts of the binder, the curing agent and the silica sand are as follows: the usage of the binder is 6-24 parts by weight and the usage of the curing agent is 0.15-2 parts by weight relative to 100 parts by weight of silica sand.
6. The method for preparing an aeration disc according to claim 5, wherein the binder is selected from one or more of epoxy resin, modified epoxy resin, polyvinylidene fluoride resin, water glass, acrylic resin, modified acrylic resin, polyurethane resin and silicate cement;
the curing agent is selected from one or more of amine curing agent, anhydride curing agent, aluminum polyphosphate, sodium fluosilicate and urotropine.
7. The method for preparing the aeration disc according to claim 6, wherein the adhesive is a modified acrylic resin and/or a modified epoxy resin;
the curing agent is an amine curing agent and/or an anhydride curing agent;
preferably, the amine-type curing agent is at least one selected from the group consisting of ethylenediamine, trimethylhexamethylenediamine, hexamethylenetetramine, diethyltriamine, hydroxymethylethylenediamine, hydroxyethylethylenediamine, dihydroxyethylethylenediamine, hydroxyethyldiethylenetriamine, dihydroxyethyldiethylenetriamine, hydroxyethylethylenediamine, cyanoethylethylenediamine, dicyanoethylethylenediamine, dicyanoethylhexamethylenediamine, dicyandiamide, cyclohexanediamine, menthanediamine, aminoethylpiperazine, isophoronediamine, and diaminocyclohexane; the acid anhydride type curing agent is at least one selected from methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, succinic anhydride and adipic anhydride.
8. The method for preparing the aeration disc according to any one of claims 3 to 7, wherein the adhesive is bisphenol A type modified epoxy resin, the epoxy value of the bisphenol A type modified epoxy resin is 0.09 to 0.55mol/100g, and the weight average molecular weight is 500-10000;
the curing agent is an amine curing agent.
9. The method for preparing an aeration disc according to any one of claims 3 to 8, wherein the silica sand is at least one selected from aeolian sand, river sand and sea sand, and the silica sand has a particle diameter of 0.02 to 2 mm; the particle diameter of the preferred silica sand is 0.02-1 mm.
10. An aeration disc, characterized in that it is produced by the method according to any one of claims 1 to 9.
CN201911365263.1A 2019-12-26 2019-12-26 Aeration disc and preparation method thereof Pending CN111153511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911365263.1A CN111153511A (en) 2019-12-26 2019-12-26 Aeration disc and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911365263.1A CN111153511A (en) 2019-12-26 2019-12-26 Aeration disc and preparation method thereof

Publications (1)

Publication Number Publication Date
CN111153511A true CN111153511A (en) 2020-05-15

Family

ID=70558171

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911365263.1A Pending CN111153511A (en) 2019-12-26 2019-12-26 Aeration disc and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111153511A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022187962A1 (en) * 2021-03-10 2022-09-15 12279479 Canada Inc. Pervious concrete composition and mineral membrane having same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531158A (en) * 2010-12-29 2012-07-04 北京仁创科技集团有限公司 Aerating apparatus
CN102555044A (en) * 2010-12-30 2012-07-11 北京仁创铸造有限公司 Method for preparing sand-base water-permeable brick
US20140054217A1 (en) * 2012-08-23 2014-02-27 Ticona Llc Wastewater aeration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531158A (en) * 2010-12-29 2012-07-04 北京仁创科技集团有限公司 Aerating apparatus
CN102555044A (en) * 2010-12-30 2012-07-11 北京仁创铸造有限公司 Method for preparing sand-base water-permeable brick
US20140054217A1 (en) * 2012-08-23 2014-02-27 Ticona Llc Wastewater aeration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022187962A1 (en) * 2021-03-10 2022-09-15 12279479 Canada Inc. Pervious concrete composition and mineral membrane having same

Similar Documents

Publication Publication Date Title
CN109851298B (en) Electromagnetic shielding cement board and semi-dry method preparation process thereof
CN115259784B (en) Method for preparing cement-based building material based on cooperation of steel slag vulcanization and carbonization
CN111153511A (en) Aeration disc and preparation method thereof
CN102034560B (en) Method for solidifying radioactive waste resin cement
TW200623492A (en) Separator material for solid polymer fuel cell and process for producing the same
CN111217566A (en) Method for preparing high-temperature-resistant concrete building block by using carbon dioxide
CN108358585A (en) A kind of thermal insulation material and preparation method thereof
CN109896825B (en) Steel slag composite basic magnesium cement building material and preparation method thereof
CN108585722B (en) Cement-based curing material for curing waste liquid containing high-concentration boric acid nuclei and curing method thereof
US6699412B2 (en) Compression-molded silicon carbide structures
CN103160074B (en) Utilization method of waste residue in treatment of phenolic resin production wastewater
CN115368058A (en) Preparation method and application of artificial stone
CN115716748A (en) Graphite tube modified by resin glassy carbon
CN112500111B (en) Method for preparing phosphorus-removing biological filter material by using autoclaved aerated concrete block waste
CN1044881C (en) Artificial straw board and its manufacturing technology
CN102765901B (en) High-performance hydrofluoric acid-resistance artificial functional composite plate and preparation method thereof
CN102516481B (en) Method for preparing sand-coated phenolic resin
CN118026641B (en) Tailing-based artificial aggregate and preparation method thereof
CN116924747B (en) Foaming particle suitable for natural water body water treatment, preparation method and application
CN116352857A (en) Method for prolonging service life of rubber sleeve of forming die of continuous casting three-piece product
CN114890749B (en) Electrolytic manganese slag and waste clay brick double-doped baking-free brick and preparation method thereof
CN101693619A (en) Method for preparing high-imitation stone sculpture by utilizing stone powder
JPS6190087A (en) Manufacture of isotropic spherical fuel or absorbing elementfor high-temperature reactor
CN110451929B (en) Cement-based porous filter material prepared from waste circuit board nonmetal powder and preparation method
CN1274623C (en) Steel slag marble and its preparing method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200515

RJ01 Rejection of invention patent application after publication