CN103073331A - Method for preparing ceramsite by using Hangjin clay - Google Patents
Method for preparing ceramsite by using Hangjin clay Download PDFInfo
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- CN103073331A CN103073331A CN2013100456749A CN201310045674A CN103073331A CN 103073331 A CN103073331 A CN 103073331A CN 2013100456749 A CN2013100456749 A CN 2013100456749A CN 201310045674 A CN201310045674 A CN 201310045674A CN 103073331 A CN103073331 A CN 103073331A
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- hanggin
- soil
- haydite
- water glass
- soda ash
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- 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
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- Processing Of Solid Wastes (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses ceramsite prepared by using Hangjin clay. The ceramsite comprises the following components in percent by weight of 50-70 percent of Hangjin clay, 15-20 percent of water glass and 10-35 percent of sodium carbonate. The ceramsite is a spherical particle with the particle size of 5-20mm. The invention also discloses a method for preparing the ceramsite. The method has the advantages of simple process, high production efficiency, low manufacture cost and no pollution, and can be used in sewage treatment. A novel method is provided for manufacturing a filler in the sewage treatment.
Description
Technical field
The invention belongs to the environment protection water treatment field, relate to particularly a kind of haydite with the preparation of Hanggin soil.
The invention still further relates to the method for the above-mentioned haydite of preparation.
Background technology
The invention of haydite can trace back to 1885, just develops but be actually with 1918.China is from early 1950s begin one's study production and the application of haydite.Haydite is to utilize industrial residue, waste material or discarded raw mineral materials, shale inferior to make for raw material, and the micropore of haydite inside is vesicular structure, the characteristics such as unit weight is little, intensity is high so that haydite has, resistance to chemical attack.The ceramic grain filter specific surface area is 6-8 times of quartz sand filter media, and porosity is 1.7-2.2 times of quartz sand.
In the last few years, haydite was used widely as filler for waste water biological treatment, and was better to water treatment effect, ammonia nitrogen removal frank reaches as high as more than 90%, process food wastewater with porous ceramic filler, when hydraulic detention time was 30.17h, the COD average removal rate surpassed 87%.At present, the investigator has developed the Novel ceramsite filtrates such as emerging haydite such as enzymatic haydite, spherical light ceramic, nano modification haydite on the basis of conventional haydite both at home and abroad.The enzymatic haydite mainly is to utilize the katalysis of enzyme to strengthen treatment effect; Spherical light ceramic has surface irregularity, the advantages such as density is moderate, intensity is high, rub resistance; The nano modification haydite then is to utilize nanotechnology that filtrate is carried out modification, and there is nanoparticle in this filter material surface, makes it to have stronger processing power.
Summary of the invention
The object of the present invention is to provide a kind of haydite with the preparation of Hanggin soil.
An also purpose of the present invention is to provide a kind of method for preparing above-mentioned haydite.
For achieving the above object, the haydite with the preparation of Hanggin soil provided by the invention by weight percentage, is comprised of the Hanggin soil of 50%-70%, the water glass of 15%-20% and the yellow soda ash of 10%-35%.Wherein, haydite is spherical particle, and particle diameter is 5-20mm.
The method of the above-mentioned haydite of preparation provided by the invention, key step is:
1) soaks Hanggin soil with sulphuric acid soln, Hanggin soil is activated;
2) soil of the Hanggin after will activating, water glass and yellow soda ash are dried respectively, smash to pieces;
3) soil of the Hanggin after will smashing to pieces, water glass and yellow soda ash add entry simultaneously, mix;
4) make spherical particle with double-roller granulator;
5) dry, roasting in the revolution cellar for storing things;
6) be transported in the cooler and cool off;
7) screening.
In the described method, the water that adds in the step 3 is the 15%-25% of solid weight.
In the described method, step 5 drying temperature is 250-500 ℃.
In the described method, step 5 maturing temperature is 700-1000 ℃, and roasting time is 8-12min.
Described method, wherein, keeping particle diameter after step 7 screening is the particle of 5-20mm.
The present invention utilizes Hanggin soil as main raw material, and the haydite of preparation mainly is the filler during as sewage disposal, can reach the absorption water pollutant, reduces the effect of the concentration of pollutent, so that water quality can qualified discharge.
The method for preparing haydite provided by the invention, its manufacturing cost is cheap, and production efficiency is high, and production technique is relatively simple.
Embodiment
The present invention is with the haydite of Hanggin soil preparation, its take weight percent as: the Hanggin soil of 50%-70%, the water glass of 15%-20% and the yellow soda ash of 10%-35% form.Haydite is spherical particle, and its particle diameter is 5-20mm, and preferred particle diameter is 8-15mm.
Preparation method of the present invention may further comprise the steps:
1) soaks Hanggin soil with sulphuric acid soln, Hanggin soil is activated;
2) soil of the Hanggin after will activating, water glass and yellow soda ash are dried respectively, smash to pieces;
3) three kinds of materials after will smashing to pieces are prepared burden, and add simultaneously entry, mix;
4) make spherical particle with double-roller granulator;
5) dry, roasting in the revolution cellar for storing things;
6) be transported in the cooler and cool off;
7) screening.
Wherein, temperature dry in the step 5 is 250-500 ℃, and the time is 20-30min.
Wherein, the temperature of roasting is 700-1000 ℃ in the step 5, and the time is 8-12min.
Wherein, keeping particle diameter after the screening in the step 7 is the particle of 5-20mm.
In the aforesaid method, Hanggin soil is the compound clay pit of the mineralogical compositions such as a kind of polygorskite (attapulgite) that contains rare earth, chlorite, illite.
Water glass used in the present invention mainly is the effect of playing binding agent and pore-forming material.
Yellow soda ash used in the present invention mainly is the effect of playing whipping agent.
Be the method that main raw material prepares haydite below in conjunction with the present invention with Hanggin soil, water glass and yellow soda ash, the present invention is further illustrated.
Embodiment 1
1) with for subsequent use behind the Hanggin soil acid activation, improves the activity of Hanggin soil.
2) soil of the Hanggin after will activating, water glass and yellow soda ash are dried respectively, smash to pieces, cross 150 mesh sieves.
3) add water after the activation Hanggin for preparing in the step 2 soil, water glass and yellow soda ash are mixed in proportion and stir, be prepared into the spherical particle thing that particle diameter is 15mm with tablets press, for the preparation of the per-cent of the raw material of haydite be: Hanggin soil 60%; Water glass 12%; Yellow soda ash 10; Sulfuric acid 3%; Water 15%.
4) the spherical particle thing for preparing in the step 3 is dry, temperature is 400 ℃, time 25min; Then roasting, temperature are 900 ℃, time 9min; In cooler, cool off at last 30min.
5 sieve the product in the step 4, and particle diameter keeps at the particle of 5-20mm, is prepared haydite.
Embodiment 2
1) with for subsequent use behind the Hanggin soil acid activation, improves the activity of Hanggin soil.
2) soil of the Hanggin after will activating, water glass and yellow soda ash are dried respectively, smash to pieces, cross 180 mesh sieves.
3) add water after the activation Hanggin for preparing in the step 2 soil, water glass and yellow soda ash are mixed in proportion and stir, be prepared into the spherical particle thing that particle diameter is 10mm with tablets press, for the preparation of the per-cent of the raw material of haydite be: Hanggin soil 55%; Water glass 14%; Yellow soda ash 10; Sulfuric acid 3%; Water 18%.
4) the spherical particle thing for preparing in the step 3 is dry, temperature is 300 ℃, time 30min; Then roasting, temperature are 850 ℃, time 11min; In cooler, cool off at last 30min.
5) product in the step 4 is sieved, particle diameter keeps at the particle of 5-20mm, is prepared haydite.
Embodiment 3
1) with for subsequent use behind the Hanggin soil acid activation, improves the activity of Hanggin soil.
2) soil of the Hanggin after will activating, water glass and yellow soda ash are dried respectively, smash to pieces, cross 120 mesh sieves.
3) add water after the activation Hanggin for preparing in the step 2 soil, water glass and yellow soda ash are mixed in proportion and stir, be prepared into the spherical particle thing that particle diameter is 15mm with tablets press, for the preparation of the per-cent of the raw material of haydite be: Hanggin soil 50%; Water glass 16%; Yellow soda ash 9; Sulfuric acid 2%; Water 23%.
4) the spherical particle thing for preparing in the step 3 is dry, temperature is 500 ℃, time 20min; Then roasting, temperature are 1000 ℃, time 8min; In cooler, cool off at last 30min.
5) product in the step 4 is sieved, particle diameter keeps at the particle of 5-20mm, is prepared haydite.
The haydite of embodiment 3 preparations is used for sewage disposal, and the various pollutent starting point concentrations of sewage are: BOD60mg/L, COD156mg/L, TP12mg/L, TN43mg/L, SS60mg/L is after the haydite processing, the various Pollutant levels of sewage are BOD9mg/L, COD48mg/L, TP0.8mg/L, TN13mg/L, SS8mg/L, one-level A standard in the municipal sewage plant is satisfied in water outlet.
Claims (7)
1. the haydite with the preparation of Hanggin soil by weight percentage, is comprised of the Hanggin soil of 50%-70%, the water glass of 15%-20% and the yellow soda ash of 10%-35%.
2. haydite according to claim 1, wherein, haydite is spherical particle, particle diameter is 5-20mm.
3. method for preparing the described haydite of claim 1, key step is:
1) soaks Hanggin soil with sulphuric acid soln, Hanggin soil is activated;
2) soil of the Hanggin after will activating, water glass and yellow soda ash are dried respectively, smash to pieces;
3) soil of the Hanggin after will smashing to pieces, water glass and yellow soda ash add entry simultaneously, mix;
4) make spherical particle with double-roller granulator;
5) dry, roasting in the revolution cellar for storing things;
6) be transported in the cooler and cool off;
7) screening.
4. according to claim 3 described methods, wherein, the water that adds in the step 3 is the 15%-25% of solid weight.
5. method according to claim 3, wherein, step 5 drying temperature is 250-500 ℃.
6. method according to claim 3, wherein, step 5 maturing temperature is 700-1000 ℃, roasting time is 8-12min.
7. method according to claim 3, wherein, keeping particle diameter after step 7 screening is the particle of 5-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100456749A CN103073331A (en) | 2013-02-05 | 2013-02-05 | Method for preparing ceramsite by using Hangjin clay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100456749A CN103073331A (en) | 2013-02-05 | 2013-02-05 | Method for preparing ceramsite by using Hangjin clay |
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| CN103073331A true CN103073331A (en) | 2013-05-01 |
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| CN2013100456749A Pending CN103073331A (en) | 2013-02-05 | 2013-02-05 | Method for preparing ceramsite by using Hangjin clay |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093071A (en) * | 2010-11-30 | 2011-06-15 | 中国环境科学研究院 | Method for preparing ceramic particles through modification of urban heavily polluted river dredged sediment |
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2013
- 2013-02-05 CN CN2013100456749A patent/CN103073331A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093071A (en) * | 2010-11-30 | 2011-06-15 | 中国环境科学研究院 | Method for preparing ceramic particles through modification of urban heavily polluted river dredged sediment |
Non-Patent Citations (1)
| Title |
|---|
| 郭向利: "改性粘土矿物制备印染废水脱色陶粒及机理研究", 《中国优秀硕士学位论文全文数据库 工程科技第I辑》 * |
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Application publication date: 20130501 |