CN101503202A - Technique for hydro-thermal synthesis of high purity zeolite and fly ash zeolite adsorbing agent from fly ash - Google Patents
Technique for hydro-thermal synthesis of high purity zeolite and fly ash zeolite adsorbing agent from fly ash Download PDFInfo
- Publication number
- CN101503202A CN101503202A CNA2009100210850A CN200910021085A CN101503202A CN 101503202 A CN101503202 A CN 101503202A CN A2009100210850 A CNA2009100210850 A CN A2009100210850A CN 200910021085 A CN200910021085 A CN 200910021085A CN 101503202 A CN101503202 A CN 101503202A
- Authority
- CN
- China
- Prior art keywords
- zeolite
- flyash
- fly ash
- high purity
- hydro
- 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
Links
Abstract
The invention provides a process for hydrothermally synthesizing fly ash into a highly-pure zeolite and a fly ash zeolite adsorbent, which comprises the following steps: adding alkali solution into fly ash, obtaining solution containing silicon elements and aluminum elements under the hydrothermal condition, adding a certain amount of base soluble Al2O3 or SiO2 in the solution containing the silicon elements and the aluminum elements, and then preparing the highly-pure zeolite after hydrothermal reaction is carried out for a certain time; and adding the fly ash or the fly ash which is not dissolved under the hydrothermal condition into sodium hydroxide or sodium carbonate to be mixed uniformly (be calcined at a certain temperature), carrying out the hydrothermal condition, and then obtaining the fly ash zeolite adsorbent. The invention has simple process; the purity of the prepared highly-pure zeolite can achieve above 90 percent; and the prepared fly ash zeolite adsorbent has stronger adsorption capacity for heavy metal ions or organic wastewater.
Description
Technical field
The invention belongs to flyash reutilization technology field, be specifically related to a kind of technology flyash hydro-thermal synthesis of high purity zeolite and coal ash zeolite sorbent material.
Background technology
Flyash is the solid waste of fuel-burning power plant discharging, and China's flyash quantity discharged is annual to surpass 100,000,000 tons, and whole world quantity discharged every year is 5,000,000,000 tons.In the flyash of discharging, the flyash less than 1/2 is used for low value-added application such as manufacture of cement, coalpit fillings, civil engineering work, remainingly then builds the stacking of grey dam, and the utilization of fly ash rate is lower.
With flyash synthetic zeolite (abbreviation coal ash zeolite) is an approach of flyash high value added utilization.Zeolite is a paracrystalline silico-aluminate microporous crystalline body, and zeolite is most widely used sorbent material and catalyzer.Flyash synthetic zeolite has better adsorption capability and catalytic capability.
The alkaline solution hydrothermal method is under hydrothermal condition flyash and alkaline solution reaction to be generated zeolite.Somerset[Talanta, 2004,64:109-114] etc. human flyash be raw material, studied different proportionings of each composition in the alkaline solution, the influence that zeolite is formed.They react 72h under 85 ℃ of hydrothermal conditions, synthesized Na-A zeolite and X zeolite.Hui[Microporous and Mesoporous Materials, 2006,88:145-151], Tanaka[Fuel, 2006,85:1329-1334] etc. the people sial that flyash has been dissolved in the alkaline solution is filtered out, synthesized pure 4A zeolite.
The alkali fusion hydrothermal method is that flyash and alkali are blended in high temperature (more than 700 ℃) fusion, makes crystallization phases change silicon soluble in water and the sodium salt of aluminium (improving the utilization of coal ash rate) into, generates the zeolite product under hydrothermal condition.People such as Molina [Minerals Engineering, 2004,7:167-173] have studied the influence of the hydrothermal temperature of system after add-on, fusion time and the fusion of NaOH to zeolite synthesis.The result shows that the amount of NaOH not only influences the resultant quantity of zeolite, also influences the type of zeolite.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of technology simply, not influence the resultant quantity of zeolite, do not influence the technology with flyash hydro-thermal synthesis of high purity zeolite and coal ash zeolite sorbent material of the type of zeolite, to prepare the coal ash zeolite sorbent material of high zeolite of purity and strong adsorptive power yet.
Principle of the present invention: in flyash, add alkaline solution, under hydrothermal condition, obtain containing the solution of element silicon and aluminium element, but in the solution that contains aluminium and silicon, add a certain amount of caustic solubility Al
2O
3Or SiO
2, the hydro-thermal reaction certain hour prepares high purity zeolite.With flyash or under hydrothermal condition undissolved flyash, add sodium hydroxide or yellow soda ash and mix (or in certain temperature calcining back), hydro-thermal reaction obtains the coal ash zeolite sorbent material.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of technology with flyash hydro-thermal synthesis of high purity zeolite and coal ash zeolite sorbent material is characterized in that technological process is:
(1) with shredder flyash is ground to form the flyash that granularity is 0.1-80 μ m;
(2) flyash after grinding in the step (1) is joined in the plastic containers that alkaline solution is housed, the volume ratio of alkaline solution and flyash is 1: 2-20, described alkaline solution is that concentration is the sodium hydroxide solution of 1-3mol/L, be under 30-100 ℃ the condition hydro-thermal 1-3 days at hydrothermal temperature, with 200-500 purpose screen filtration, obtain containing the solution of element silicon and aluminium element and not molten flyash;
(3) in the solution that contains element silicon and aluminium element of (2) preparation, add the Al that is dissolved in alkaline solution
2O
3Or SiO
2, make solution system Si/Al than for the 0.8-1.2 that needs preparation zeolite Si/Al ratio doubly, be under 30-100 ℃ the condition hydro-thermal 1-6 days at hydrothermal temperature, obtain purity at the high purity zeolite 90% or more, separation alkaline solution and high purity zeolite, alkaline solution recycle;
(4) flyash that not molten flyash oven dry that step (2) is obtained or step (1) obtain adds sodium hydroxide or yellow soda ash and the particle diameter Al at 0.1-40 μ m
2O
3Or SiO
2Mix, make reaction system Si/Al than for the 0.8-1.2 that needs preparation zeolite Si/Al ratio doubly, grind or behind calcining 1-3h under the temperature 200-500 ℃ condition, add the alkaline solution behind the synthetic high purity zeolite in the step (3), be under 30-100 ℃ the condition hydro-thermal 1-3 days at hydrothermal temperature, obtain the coal ash zeolite sorbent material, separation of fine coal ash zeolite adsorbents and alkaline solution, alkaline solution recycle, the add-on of sodium hydroxide or yellow soda ash be element silicon and aluminium element total moles in the flyash 0.5-2 doubly.
Shredder is oscillating mill or star lapping machine described in the above-mentioned steps (1).
High purity zeolite described in the above-mentioned steps (3) is A type zeolite, y-type zeolite, X type zeolite, P type zeolite or ZSM-5 zeolite.
Contain one or more zeolites in A type zeolite, y-type zeolite, X type zeolite, P type zeolite and the ZSM-5 zeolite described in the above-mentioned steps (4) in the coal ash zeolite sorbent material, zeolite content is the 40%-90% of coal ash zeolite adsorbent weight.
The present invention compared with prior art has the following advantages: technology of the present invention is simple, and the high purity zeolite purity of preparation can reach more than 90%, and the coal ash zeolite ABSORBENTS ABSORPTION metal ion or the organic waste water of preparation have stronger adsorptive power.
Below by embodiment the present invention is described in further detail.
Embodiment
Embodiment 1
It is the particle of particle diameter less than 80 μ m that flyash is ground with oscillating mill, get the flyash after 50g grinds, after the NaOH solution (concentration is 2mol/L) that adds 100mL stirs, in the Plastic Bottle of the 200mL that packs into, put into temperature and be 80 ℃ water-bath, carry out hydro-thermal reaction, during hydro-thermal 36h, with the concentration of Si element and Al element in the chemical analysis method measurement solution, 300 eye mesh screens filter, obtain containing the solution of Si element and Al element, according to the molten Al of stoichiometric equation adding theobromine of P type zeolite
2O
3, behind the ageing 36h, under 80 ℃ of hydrothermal conditions, crystallization 3 days, 500 eye mesh screens filter, and it is P type zeolite that solid is detected with XRD, after the Na ion concentration in the solution after the filtration detects with Atomic Absorption Spectroscopy AAS, reusable edible.
Embodiment 2
It is the particle of particle diameter less than 80 μ m that flyash is ground with star lapping machine, gets the flyash after 10g grinds, and adding particle diameter is the Al of 40 μ m
2O
3Put into nickel crucible (Si:Al:Na=1:1:1 mol ratio) with solid NaOH, after mixing, in 300 ℃ retort furnace, be incubated 1h, take out and grind, the Plastic Bottle of the 100mL that packs into, add the alkaline solution 50mL that embodiment 1 filters out, at 80 ℃ of hydro-thermal 5h, 500 eye mesh screens filter, and solid is the coal ash zeolite sorbent material, after Na ion concentration in the solution after the filtration detects with Atomic Absorption Spectroscopy AAS, reusable edible.
Embodiment 3
Get the not molten flyash oven dry of 20g embodiment 1, adding particle diameter is the Al of 40 μ m
2O
3Put into nickel crucible (Si:Al:Na=1:1:1 mol ratio) with solid NaOH, after mixing, in 300 ℃ retort furnace, be incubated 1h, take out and grind, pack into the Plastic Bottle of 100mL, add the alkaline solution 50mL that embodiment 1 synthetic zeolite after-filtration goes out, after mixing, at 80 ℃ of hydro-thermal 24h, 500 eye mesh screens filter, solid is the coal ash zeolite sorbent material, after the Na ion concentration in the solution after the filtration detects with Atomic Absorption Spectroscopy AAS, and reusable edible.
Embodiment 4
It is the particle of particle diameter less than 80 μ m that flyash is ground with oscillating mill, gets the flyash after 20g grinds, and the NaOH solution (concentration is 2mol/L) and the particle diameter that add 50mL are the SiO of 20 μ m
2(Si:Al:Na=32:1:20 mol ratio) is after mixing, at 80 ℃ of hydro-thermal 48h, 500 eye mesh screens filter, solid is the coal ash zeolite sorbent material that contains the ZSM-5 zeolite, after the Na ion concentration in the solution after the filtration detects with Atomic Absorption Spectroscopy AAS, and reusable edible.
Claims (4)
1. technology with flyash hydro-thermal synthesis of high purity zeolite and coal ash zeolite sorbent material is characterized in that technological process is:
(1) with shredder flyash is ground to form the flyash that granularity is 0.1-80 μ m;
(2) flyash after grinding in the step (1) is joined in the plastic containers that alkaline solution is housed, the volume ratio of alkaline solution and flyash is 1: 2-20, described alkaline solution is that concentration is the sodium hydroxide solution of 1-3mol/L, be under 30-100 ℃ the condition hydro-thermal 1-3 days at hydrothermal temperature, with 200-500 purpose screen filtration, obtain containing the solution of element silicon and aluminium element and not molten flyash;
(3) in the solution that contains element silicon and aluminium element of (2) preparation, add the Al that is dissolved in alkaline solution
2O
3Or SiO
2, make Si/Al in the solution system than for the 0.8-1.2 that needs preparation zeolite Si/Al ratio doubly, be under 30-100 ℃ the condition hydro-thermal 1-6 days at hydrothermal temperature, obtain purity at the high purity zeolite 90% or more, separation alkaline solution and high purity zeolite, alkaline solution recycle;
(4) flyash that not molten flyash oven dry that step (2) is obtained or step (1) obtain adds sodium hydroxide or yellow soda ash and the particle diameter Al at 0.1-40 μ m
2O
3Or SiO
2Mix, make reaction system Si/Al than for the 0.8-1.2 that needs preparation zeolite Si/Al ratio doubly, at shredder grinding 1-10h or behind calcining 1-3h under the temperature 200-500 ℃ condition, add the alkaline solution behind the synthetic high purity zeolite in the step (3), be under 30-100 ℃ the condition hydro-thermal 1-3 days at hydrothermal temperature, obtain the coal ash zeolite sorbent material, separation of fine coal ash zeolite adsorbents and alkaline solution, alkaline solution recycle, the add-on of sodium hydroxide or yellow soda ash be element silicon and aluminium element total moles in the flyash 0.5-2 doubly.
2. the technology with flyash hydro-thermal synthesis of high purity zeolite and coal ash zeolite sorbent material according to claim 1 is characterized in that, shredder is oscillating mill or star lapping machine described in step (1) and the step (4).
3. the technology with flyash hydro-thermal synthesis of high purity zeolite and coal ash zeolite sorbent material according to claim 1 is characterized in that, high purity zeolite described in the step (3) is A type zeolite, y-type zeolite, X type zeolite, P type zeolite or ZSM-5 zeolite.
4. the technology with flyash hydro-thermal synthesis of high purity zeolite and coal ash zeolite sorbent material according to claim 1, it is characterized in that, contain one or more zeolites in A type zeolite, y-type zeolite, X type zeolite, P type zeolite and the ZSM-5 zeolite described in the step (4) in the coal ash zeolite sorbent material, zeolite content is the 40%-90% of coal ash zeolite adsorbent weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100210850A CN101503202A (en) | 2009-02-11 | 2009-02-11 | Technique for hydro-thermal synthesis of high purity zeolite and fly ash zeolite adsorbing agent from fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100210850A CN101503202A (en) | 2009-02-11 | 2009-02-11 | Technique for hydro-thermal synthesis of high purity zeolite and fly ash zeolite adsorbing agent from fly ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101503202A true CN101503202A (en) | 2009-08-12 |
Family
ID=40975592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100210850A Pending CN101503202A (en) | 2009-02-11 | 2009-02-11 | Technique for hydro-thermal synthesis of high purity zeolite and fly ash zeolite adsorbing agent from fly ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101503202A (en) |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811703A (en) * | 2010-04-20 | 2010-08-25 | 亚细亚（福建）环保有限公司 | A type zeolite and preparation method thereof |
| CN102091593A (en) * | 2010-12-07 | 2011-06-15 | 浙江大学 | Preparation method of functionalized fly ash and zeolite composite particles |
| CN102452664A (en) * | 2010-10-29 | 2012-05-16 | 国立云林科技大学 | Preparation method of structure-enhanced silver/copper antibacterial zeolite and product prepared from structure-enhanced silver/copper antibacterial zeolite |
| CN103011743A (en) * | 2012-12-06 | 2013-04-03 | 陕西理工学院 | Preparation process of natrolite inorganic artificial stone |
| CN104843729A (en) * | 2015-05-04 | 2015-08-19 | 华中科技大学 | Zeolite preparation process at normal temperature and pressure and application thereof |
| CN104984979A (en) * | 2015-06-23 | 2015-10-21 | 上海环境卫生工程设计院 | Method for stabilizing incineration fly ash by means of chemical coating |
| TWI505989B (en) * | 2013-06-03 | 2015-11-01 | Univ Nat Cheng Kung | A method for preparation of zeolite |
| CN105036150A (en) * | 2015-06-26 | 2015-11-11 | 中国矿业大学(北京) | Artificial zeolite prepared directionally by utilizing industrial solid waste and preparation method and application thereof |
| CN106348380A (en) * | 2016-09-08 | 2017-01-25 | 北京神雾环境能源科技集团股份有限公司 | Method for preparing water purifying agent by using carbide furnace gas dust |
| CN106495181A (en) * | 2016-10-26 | 2017-03-15 | 天津大学 | A kind of method that flyash synthesizes y-type zeolite |
| CN106622250A (en) * | 2016-10-31 | 2017-05-10 | 宁波诺丁汉新材料研究院有限公司 | Application of coal ash serving as pyrolysis catalyst and coal ash catalytic performance test method |
| CN106745042A (en) * | 2016-12-01 | 2017-05-31 | 神华集团有限责任公司 | Flyash acid system residue of aluminum-extracted prepares the method and the Application way of flyash of 4A types molecular sieve and the type molecular sieves of ZSM 5 |
| CN106824053A (en) * | 2017-04-06 | 2017-06-13 | 东北大学 | A kind of preparation method of the fly ash-based adsorbent of efficient absorption dyestuff |
| CN106865565A (en) * | 2017-03-26 | 2017-06-20 | 天津大学 | A kind of flyash synthesizes the method for X-type zeolite |
| CN107159091A (en) * | 2017-07-27 | 2017-09-15 | 同济大学 | A kind of high-performance heavy-metal adsorption material of calcic silicon and preparation method thereof |
| CN107324357A (en) * | 2017-08-15 | 2017-11-07 | 中国神华能源股份有限公司 | The method and the molecular sieves of ZSM 5 of the molecular sieves of ZSM 5 are prepared by raw material of white clay |
| CN108201876A (en) * | 2018-02-12 | 2018-06-26 | 东北石油大学 | A kind of method that NaP molecular sieves adsorb zinc ion for depth |
| CN108359273A (en) * | 2018-01-29 | 2018-08-03 | 南昌航空大学 | A method of improving marble powder whiteness |
| CN108393065A (en) * | 2018-03-06 | 2018-08-14 | 江苏开放大学（江苏城市职业学院） | A kind of fly ash float Compound Heavy Metals sorbing material and its application |
| CN108946754A (en) * | 2017-05-24 | 2018-12-07 | 神华集团有限责任公司 | SBA-15 mesopore molecular sieve and preparation method and application and flyash produce the method for aluminium oxide and SBA-15 mesopore molecular sieve |
| CN109304138A (en) * | 2018-11-06 | 2019-02-05 | 深圳市长隆科技有限公司 | A kind of aluminium calcium powder reaction slag prepares heavy metal absorbent and its regeneration method |
| CN109534357A (en) * | 2018-12-27 | 2019-03-29 | 中国神华能源股份有限公司 | A kind of Y type molecular sieve prepared using white clay as raw material and its method |
| CN109879295A (en) * | 2019-04-25 | 2019-06-14 | 太原理工大学 | A kind of ZSM-5 molecular sieve |
| CN110040743A (en) * | 2019-04-25 | 2019-07-23 | 太原理工大学 | A kind of coal ash for manufacturing for SSZ-13 molecular sieve method |
| CN112195029A (en) * | 2020-10-28 | 2021-01-08 | 东北大学 | Method and device for preparing soil conditioner by using coal ash synthetic zeolite to treat wastewater |
| CN112237902A (en) * | 2020-10-30 | 2021-01-19 | 长安大学 | Surface zeolite adsorbent and preparation method and application thereof |
| CN113403082A (en) * | 2021-04-27 | 2021-09-17 | 武汉纺织大学 | Conditioner for repairing acid soil pollution and acid soil pollution repairing method |
| CN113694897A (en) * | 2021-08-27 | 2021-11-26 | 陕西科技大学 | Fly ash-based layered adsorption material, and preparation method and application thereof |
| CN113996142A (en) * | 2021-09-08 | 2022-02-01 | 中国大唐集团科学技术研究总院有限公司华东电力试验研究院 | System and method for manufacturing zeolite and capturing carbon dioxide in flue gas by using fly ash |
| CN115869908A (en) * | 2022-12-09 | 2023-03-31 | 山西大学 | Method for preparing adsorption-catalysis functional material from coal gasification ash |
-
2009
- 2009-02-11 CN CNA2009100210850A patent/CN101503202A/en active Pending
Cited By (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811703A (en) * | 2010-04-20 | 2010-08-25 | 亚细亚（福建）环保有限公司 | A type zeolite and preparation method thereof |
| CN102452664A (en) * | 2010-10-29 | 2012-05-16 | 国立云林科技大学 | Preparation method of structure-enhanced silver/copper antibacterial zeolite and product prepared from structure-enhanced silver/copper antibacterial zeolite |
| CN102091593A (en) * | 2010-12-07 | 2011-06-15 | 浙江大学 | Preparation method of functionalized fly ash and zeolite composite particles |
| CN102091593B (en) * | 2010-12-07 | 2012-12-26 | 浙江大学 | Preparation method of functionalized fly ash and zeolite composite particles |
| CN103011743A (en) * | 2012-12-06 | 2013-04-03 | 陕西理工学院 | Preparation process of natrolite inorganic artificial stone |
| TWI505989B (en) * | 2013-06-03 | 2015-11-01 | Univ Nat Cheng Kung | A method for preparation of zeolite |
| CN104843729B (en) * | 2015-05-04 | 2017-08-01 | 华中科技大学 | Process and its application of zeolite are prepared under a kind of normal temperature and pressure |
| CN104843729A (en) * | 2015-05-04 | 2015-08-19 | 华中科技大学 | Zeolite preparation process at normal temperature and pressure and application thereof |
| CN104984979B (en) * | 2015-06-23 | 2018-03-20 | 上海环境卫生工程设计院 | A kind of method using chemistry cladding combustion stability flying dust |
| CN104984979A (en) * | 2015-06-23 | 2015-10-21 | 上海环境卫生工程设计院 | Method for stabilizing incineration fly ash by means of chemical coating |
| CN105036150A (en) * | 2015-06-26 | 2015-11-11 | 中国矿业大学(北京) | Artificial zeolite prepared directionally by utilizing industrial solid waste and preparation method and application thereof |
| CN106348380A (en) * | 2016-09-08 | 2017-01-25 | 北京神雾环境能源科技集团股份有限公司 | Method for preparing water purifying agent by using carbide furnace gas dust |
| CN106495181A (en) * | 2016-10-26 | 2017-03-15 | 天津大学 | A kind of method that flyash synthesizes y-type zeolite |
| CN106622250B (en) * | 2016-10-31 | 2019-04-09 | 宁波诺丁汉新材料研究院有限公司 | Coal ash is as the purposes of pyrolysis catalysts and the method for coal ash catalytic performance test |
| CN106622250A (en) * | 2016-10-31 | 2017-05-10 | 宁波诺丁汉新材料研究院有限公司 | Application of coal ash serving as pyrolysis catalyst and coal ash catalytic performance test method |
| CN106745042A (en) * | 2016-12-01 | 2017-05-31 | 神华集团有限责任公司 | Flyash acid system residue of aluminum-extracted prepares the method and the Application way of flyash of 4A types molecular sieve and the type molecular sieves of ZSM 5 |
| CN106745042B (en) * | 2016-12-01 | 2018-11-20 | 神华集团有限责任公司 | Flyash acid system residue of aluminum-extracted prepares the method for 4A type molecular sieve and type ZSM 5 molecular sieve and the utilization method of flyash |
| CN106865565A (en) * | 2017-03-26 | 2017-06-20 | 天津大学 | A kind of flyash synthesizes the method for X-type zeolite |
| CN106824053A (en) * | 2017-04-06 | 2017-06-13 | 东北大学 | A kind of preparation method of the fly ash-based adsorbent of efficient absorption dyestuff |
| CN108946754B (en) * | 2017-05-24 | 2021-02-26 | 神华集团有限责任公司 | SBA-15 mesoporous molecular sieve, preparation method and application thereof, and method for producing alumina and SBA-15 mesoporous molecular sieve from fly ash |
| CN108946754A (en) * | 2017-05-24 | 2018-12-07 | 神华集团有限责任公司 | SBA-15 mesopore molecular sieve and preparation method and application and flyash produce the method for aluminium oxide and SBA-15 mesopore molecular sieve |
| CN107159091A (en) * | 2017-07-27 | 2017-09-15 | 同济大学 | A kind of high-performance heavy-metal adsorption material of calcic silicon and preparation method thereof |
| CN107324357A (en) * | 2017-08-15 | 2017-11-07 | 中国神华能源股份有限公司 | The method and the molecular sieves of ZSM 5 of the molecular sieves of ZSM 5 are prepared by raw material of white clay |
| CN107324357B (en) * | 2017-08-15 | 2020-02-04 | 中国神华能源股份有限公司 | Method for preparing ZSM-5 molecular sieve by using white mud as raw material and ZSM-5 molecular sieve |
| CN108359273A (en) * | 2018-01-29 | 2018-08-03 | 南昌航空大学 | A method of improving marble powder whiteness |
| CN108201876A (en) * | 2018-02-12 | 2018-06-26 | 东北石油大学 | A kind of method that NaP molecular sieves adsorb zinc ion for depth |
| CN108201876B (en) * | 2018-02-12 | 2020-11-13 | 东北石油大学 | Method for deeply adsorbing zinc ions by using NaP molecular sieve |
| CN108393065A (en) * | 2018-03-06 | 2018-08-14 | 江苏开放大学（江苏城市职业学院） | A kind of fly ash float Compound Heavy Metals sorbing material and its application |
| CN109304138A (en) * | 2018-11-06 | 2019-02-05 | 深圳市长隆科技有限公司 | A kind of aluminium calcium powder reaction slag prepares heavy metal absorbent and its regeneration method |
| CN109304138B (en) * | 2018-11-06 | 2021-07-27 | 深圳市长隆科技有限公司 | Method for preparing heavy metal adsorbent from aluminum calcium powder reaction slag and regenerating heavy metal adsorbent |
| CN109534357A (en) * | 2018-12-27 | 2019-03-29 | 中国神华能源股份有限公司 | A kind of Y type molecular sieve prepared using white clay as raw material and its method |
| CN110040743A (en) * | 2019-04-25 | 2019-07-23 | 太原理工大学 | A kind of coal ash for manufacturing for SSZ-13 molecular sieve method |
| CN109879295A (en) * | 2019-04-25 | 2019-06-14 | 太原理工大学 | A kind of ZSM-5 molecular sieve |
| CN112195029A (en) * | 2020-10-28 | 2021-01-08 | 东北大学 | Method and device for preparing soil conditioner by using coal ash synthetic zeolite to treat wastewater |
| CN112237902A (en) * | 2020-10-30 | 2021-01-19 | 长安大学 | Surface zeolite adsorbent and preparation method and application thereof |
| CN113403082A (en) * | 2021-04-27 | 2021-09-17 | 武汉纺织大学 | Conditioner for repairing acid soil pollution and acid soil pollution repairing method |
| CN113694897A (en) * | 2021-08-27 | 2021-11-26 | 陕西科技大学 | Fly ash-based layered adsorption material, and preparation method and application thereof |
| CN113694897B (en) * | 2021-08-27 | 2023-12-26 | 陕西科技大学 | Fly ash-based layered adsorption material and preparation method and application thereof |
| CN113996142A (en) * | 2021-09-08 | 2022-02-01 | 中国大唐集团科学技术研究总院有限公司华东电力试验研究院 | System and method for manufacturing zeolite and capturing carbon dioxide in flue gas by using fly ash |
| CN115869908A (en) * | 2022-12-09 | 2023-03-31 | 山西大学 | Method for preparing adsorption-catalysis functional material from coal gasification ash |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101503202A (en) | Technique for hydro-thermal synthesis of high purity zeolite and fly ash zeolite adsorbing agent from fly ash | |
| Ameh et al. | Influence of aluminium source on the crystal structure and framework coordination of Al and Si in fly ash-based zeolite NaA | |
| Yoldi et al. | Zeolite synthesis from industrial wastes | |
| Yuan et al. | Synthesis and adsorption performance of ultra-low silica-to-alumina ratio and hierarchical porous ZSM-5 zeolites prepared from coal gasification fine slag | |
| CN101624191B (en) | Method for preparing 13 X molecular sieve by using lithium slag as raw materials | |
| Li et al. | Hydrothermal synthesis of zeolites-calcium silicate hydrate composite from coal fly ash with co-activation of Ca (OH) 2-NaOH for aqueous heavy metals removal | |
| CN104291349A (en) | Method for preparing P type molecular sieve by using coal ash as raw material | |
| CN104254493A (en) | Aluminum silicate and method for producing same | |
| KR102227515B1 (en) | Zeolite and manufaturing method of the same | |
| CN102963908A (en) | Method for preparing ZSM-5 molecular sieve without template agent | |
| CN106745027B (en) | A kind of method of flyash synthesis analcime | |
| CN107428549B (en) | Process for producing beta-zeolite | |
| AU2020102183A4 (en) | Preparation of zeolite 4a from tailings and method for treatment of pb-containing wastewater | |
| Flores et al. | Synthesis of potassium zeolite from rice husk ash as a silicon source | |
| Ismael | Synthesis and characterization of zeolite X obtained from kaolin for adsorption of Zn (II) | |
| CN103769045B (en) | A kind of preparation method of fly ash base high-performance adsorbing material | |
| CN104773740A (en) | Method for synchronously preparing type-A zeolite and white carbon black with fly ash | |
| CN109928406B (en) | Analcime and its synthesis method | |
| Ruen-ngam et al. | Zeolite formation from coal fly ash and its adsorption potential | |
| Wu et al. | Changes of mineralogical–chemical composition, cation exchange capacity, and phosphate immobilization capacity during the hydrothermal conversion process of coal fly ash into zeolite | |
| Cheng et al. | NaP1 zeolite synthesized via effective extraction of Si and Al from red mud for methylene blue adsorption | |
| KR102316889B1 (en) | Manufaturing method of zeolite using lithium residue | |
| Ameh et al. | Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid | |
| CN101214973A (en) | Method for preparing high whiteness A-type zeolite from coal gangue | |
| Santasnachok et al. | The utility of rice husk ash from biomass power plant: synthesis of Na-A and Na-X zeolites using the two step method hydrothermal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090812 |