CN114478083A - Method for preparing silicon fertilizer from coarse slag of gasification furnace - Google Patents
Method for preparing silicon fertilizer from coarse slag of gasification furnace Download PDFInfo
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- CN114478083A CN114478083A CN202210144796.2A CN202210144796A CN114478083A CN 114478083 A CN114478083 A CN 114478083A CN 202210144796 A CN202210144796 A CN 202210144796A CN 114478083 A CN114478083 A CN 114478083A
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- slag
- silicon fertilizer
- preparing
- coarse slag
- silicon
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- 239000002893 slag Substances 0.000 title claims abstract description 85
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 75
- 239000010703 silicon Substances 0.000 title claims abstract description 75
- 239000003337 fertilizer Substances 0.000 title claims abstract description 62
- 238000002309 gasification Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 39
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 45
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000006184 cosolvent Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000003213 activating effect Effects 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 18
- 239000000126 substance Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 10
- 239000003921 oil Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 239000006012 monoammonium phosphate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D5/00—Fertilisers containing magnesium
Abstract
The invention relates to the technical field of preparation of silicon fertilizers, in particular to a method for preparing a silicon fertilizer from coarse slag of a gasification furnace. The method comprises the following steps: (1) performing dealuminization pretreatment on the coarse slag and a sodium hydroxide solution, and filtering to obtain dealuminized slag; (2) washing the dealuminized slag obtained in the step (1) with water, and drying; (3) and (3) mixing the dealuminized slag dried in the step (2) with an activating agent and a cosolvent to obtain a mixture, roasting the mixture, and cooling to obtain the silicon fertilizer. The content of effective silicon in the silicon fertilizer prepared by the method is more than 20 percent, and the silicon fertilizer meets the national standard; compared with the traditional chemical synthesis method for preparing the silicon fertilizer, the method has the advantages that the roasting temperature is reduced, the energy consumption is reduced, and the production cost of the silicon fertilizer is reduced; the drying time duration in the reaction process is relatively shortened; and the method can better solve the problem of recycling and reusing the coarse slag of the gasification furnace in the coal chemical industry, provides a new method for treating the coarse slag of the gasification furnace for enterprises, and increases the income.
Description
Technical Field
The invention relates to the technical field of preparation of silicon fertilizers, in particular to a method for preparing a silicon fertilizer from coarse slag of a gasification furnace.
Background
The characteristics of rich coal, poor oil and less gas in China enable coal to still serve as main energy in China for a long time in the future, and in order to maintain national energy safety and meet the requirement of environmental protection, the coal-to-oil technology is taken as one of important means for clean utilization of coal, and the coal-to-oil technology is greatly valued and developed, but the technology is also the source of important waste residue generation. According to statistics, millions of tons of ash residues are generated in the process of indirect oil production by coal, mainly from coal gasification slag and boiler ash residues, and account for about 95% and 5% of the total produced slag. Therefore, the research on the reduction and resource utilization technology of the coal gasification slag is the key point for realizing the reduction of the coal gasification slag treatment cost of coal gasification and coal indirect oil production enterprises and achieving both economic benefit and environmental protection benefit.
The gasified slag comprises coarse slag and fine slag, the coarse slag is slurried coal particles, the coarse slag is melted, chilled, condensed and the like under the high-temperature and high-pressure condition of the gasification furnace, and water-containing slag discharged from a slag discharge lock hopper at the bottom of the gasification furnace, the residual carbon amount fluctuates greatly along with coal types, gasification furnace types and gasification furnace operating conditions, generally ranges from 10% to 30%, the particle size is intensively distributed between 16 meshes and 4 meshes, and the generated amount accounts for about 80% of the discharge amount of the gasified slag. At present, the effective treatment degree of the coarse slag of the gasification furnace is not high, the coarse slag is mainly treated by stacking or landfill, not only occupies the land, but also generates dust, and if the anti-seepage measure is not in place, the coarse slag of the gasification furnace can pollute the water body and the soil. The resource utilization of the coarse slag of the gasification furnace is a problem which is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to provide a method for preparing a silicon fertilizer from gasifier coarse slag, which can better solve the problems of recycling and reusing of the gasifier coarse slag in the coal chemical industry, provide a new method for treating the gasifier coarse slag for enterprises, and increase the income.
The invention provides a method for preparing a silicon fertilizer from coarse slag of a gasification furnace, which comprises the following steps:
(1) performing dealuminization pretreatment on the coarse slag and a sodium hydroxide solution, and filtering to obtain dealuminized slag;
(2) washing the dealuminized slag obtained in the step (1) with water, and drying;
(3) and (3) mixing the dealuminized slag dried in the step (2) with an activating agent and a cosolvent to obtain a mixture, roasting the mixture, and cooling to obtain the silicon fertilizer.
Preferably, the temperature of the dealumination pretreatment in the step (1) is 100-200 ℃.
Preferably, the time of the dealumination pretreatment in the step (1) is 0.5 to 2 hours.
Preferably, the drying temperature in the step (2) is 120 ℃ to 150 ℃.
Preferably, the drying time in the step (2) is 8 to 9 hours.
Preferably, the activator in step (3) is at least one of calcium oxide, magnesium oxide and phosphorus-containing compound. More preferably, the magnesium oxide can improve the effective silicon content in the silicon fertilizer and reduce the application amount of the conditioner.
Preferably, the cosolvent in the step (3) is at least one of sodium hydroxide, sodium bicarbonate, sodium carbonate and potassium hydroxide. More preferably sodium hydroxide, the sodium hydroxide is more easily combined with impurities in the raw materials to form slag and separated from metals so as to achieve the aim of smelting or refining, and insoluble substances are changed into soluble substances for analysis.
Preferably, the calcination temperature in the step (3) is 980 ℃ to 990 ℃.
Preferably, the calcination time in the step (3) is 1 to 2.5 hours.
Preferably, the mass ratio of the dealuminized slag dried in the step (3), the activating agent and the cosolvent is 5:1:5-5:1: 10.
Compared with the prior art, the invention has the following advantages:
(1) according to the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace, the effective silicon content in the prepared silicon fertilizer is more than 20%, and the silicon fertilizer meets the national standard.
(2) Compared with the traditional chemical synthesis method for preparing the silicon fertilizer, the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace provided by the invention has the advantages that the roasting temperature is reduced, the energy consumption is reduced, and the production cost of the silicon fertilizer is reduced; the drying time duration in the reaction process is relatively shortened; and the method can better solve the problems of recycling and reusing the coarse slag of the gasification furnace in the coal chemical industry, provides a new method for treating the coarse slag of the gasification furnace for enterprises, and increases the income.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms also include the plural forms unless the context clearly dictates otherwise, and further, it is understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method for preparing a silicon fertilizer from coarse slag of a gasification furnace comprises the following steps:
the coarse slag of the gasification furnace is the coarse slag generated by a coal chemical gasification furnace;
(1) firstly, fully mixing 400mL of 15 mass percent sodium hydroxide solution with 100g of dried gasifier coarse slag, performing dealuminization pretreatment, reacting in an oil bath kettle at 150 ℃ for 1 hour, taking out the mixed solution, and filtering to obtain dealuminized slag;
(2) washing the dealuminized slag with water for multiple times, and then drying in an oven at the drying temperature of 120 ℃ for 8 hours;
(3) uniformly mixing 50g of dealuminized slag, 10g of magnesium oxide and 50g of sodium hydroxide, putting the mixture into a crucible, then putting the crucible into a muffle furnace for roasting, and after roasting for 1 hour at 980 ℃, cooling the temperature to room temperature to obtain a silicon fertilizer; and (4) analyzing the effective silicon of the silicon fertilizer according to the NY/T797-2004 standard of Ministry of agriculture, wherein the effective content of the silicon fertilizer is 28 percent through tests, and the silicon fertilizer meets the requirements of NY/T797-2004.
Example 2
The coarse slag of the gasification furnace is the coarse slag generated by a coal chemical gasification furnace;
a method for preparing a silicon fertilizer from coarse slag of a gasification furnace comprises the following steps:
(1) firstly, fully mixing 400mL of 15 mass percent sodium hydroxide solution with 100g of dried gasifier coarse slag, performing dealumination pretreatment, reacting in a 100 ℃ oil bath kettle for 2 hours, taking out the mixed solution, and filtering to obtain dealumination slag;
(2) washing the dealuminized slag with water for multiple times, and then drying in an oven at the drying temperature of 120 ℃ for 8 hours;
(3) uniformly mixing 50g of dealuminized slag, 10g of calcium oxide and 50g of sodium bicarbonate, putting the mixture into a crucible, then putting the crucible into a muffle furnace for roasting, and after roasting for 1 hour at 980 ℃, cooling the temperature to room temperature to obtain a silicon fertilizer; the effective silicon of the silicon fertilizer is analyzed according to the standard NY/T797-2004 of Ministry of agriculture, and the test shows that the effective content of the silicon fertilizer is 26 percent and meets the requirement of NY/T797-2004.
Example 3
The coarse slag of the gasification furnace is the coarse slag generated by a coal chemical gasification furnace;
a method for preparing a silicon fertilizer from coarse slag of a gasification furnace comprises the following steps:
(1) firstly, fully mixing 400mL of 15 mass percent sodium hydroxide solution with 100g of dried gasifier coarse slag, performing dealumination pretreatment, reacting in an oil bath kettle at 200 ℃ for 0.5 hour, taking out the mixed solution, and filtering to obtain dealumination slag;
(2) washing the dealuminized slag with water for multiple times, and then drying in an oven at the drying temperature of 120 ℃ for 8 hours;
(3) uniformly mixing 50g of dealuminized slag, 10g of magnesium oxide and 100g of sodium hydroxide, putting the mixture into a crucible, then putting the crucible into a muffle furnace for roasting, and after roasting for 2 hours at 980 ℃, cooling the temperature to room temperature to obtain a silicon fertilizer; the effective silicon of the silicon fertilizer is analyzed according to the standard NY/T797-2004 of Ministry of agriculture, and the test shows that the effective content of the silicon fertilizer is 26 percent and meets the requirement of NY/T797-2004.
Example 4
The coarse slag of the gasification furnace is the coarse slag generated by a coal chemical gasification furnace;
the technical scheme of the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is basically the same as that of the embodiment 1, and the difference is that: replacing the calcium oxide in the step (3) with magnesium oxide. Through tests, the effective silicon content of the obtained silicon fertilizer is 27%.
Example 5
The technical scheme of the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is basically the same as that of the embodiment 1, and the difference is that: replacing sodium hydroxide in the step (3) with sodium bicarbonate. Through tests, the effective silicon content of the obtained silicon fertilizer is 26%.
Example 6
The technical scheme of the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is basically the same as that of the embodiment 1, and the difference is that: 50g of sodium hydroxide in step (3) was replaced by a mixture of 25g of sodium bicarbonate and 25g of sodium carbonate. Through tests, the effective silicon content of the obtained silicon fertilizer is 24%.
Example 7
The technical scheme of the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is basically the same as that of the embodiment 1, and the difference is that: 10g of magnesium oxide in step (3) was replaced by a mixture of 5g of calcium oxide and 5g of monoammonium phosphate. Through tests, the effective silicon content of the obtained silicon fertilizer is 25%.
Comparative example 1
The technical scheme of the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is basically the same as that of the embodiment 1, and the difference is that: the calcination temperature in step (3) is 800 ℃. And (4) carrying out silicon fertilizer effective silicon analysis according to the NY/T797-2004 standard of Ministry of agriculture, and testing to obtain the silicon fertilizer with the effective content of 18 percent, which does not meet the requirement of NY/T797-2004.
Comparative example 2
The technical scheme of the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is basically the same as that of the embodiment 1, and the difference is that: and (4) replacing the cosolvent sodium hydroxide in the step (3) with potassium carbonate. And (3) carrying out silicon fertilizer effective silicon analysis according to the NY/T797-2004 standard of Ministry of agriculture, and testing to obtain the silicon fertilizer with the effective content of 16 percent, which does not meet the requirement of NY/T797-2004.
Comparative example 3
The technical scheme of the method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is basically the same as that of the embodiment 1, and the difference is that: replacing the activator magnesium oxide in the step (3) with magnesium hydroxide. And (3) carrying out silicon fertilizer effective silicon analysis according to the NY/T797-2004 standard of Ministry of agriculture, and testing to obtain the silicon fertilizer with the effective content of 13 percent, which does not meet the requirement of NY/T797-2004.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The method for preparing the silicon fertilizer from the coarse slag of the gasification furnace is characterized by comprising the following steps of:
(1) performing dealuminization pretreatment on the coarse slag and a sodium hydroxide solution, and filtering to obtain dealuminized slag;
(2) washing the dealuminized slag obtained in the step (1) with water, and drying;
(3) and (3) mixing the dealuminized slag dried in the step (2) with an activating agent and a cosolvent to obtain a mixture, roasting the mixture, and cooling to obtain the silicon fertilizer.
2. The method for preparing the silicon fertilizer from the gasifier coarse slag according to claim 1, wherein the temperature of the dealumination pretreatment in the step (1) is 100-200 ℃.
3. The method for preparing the silicon fertilizer by using the gasifier coarse slag as claimed in claim 2, wherein the time of the dealumination pretreatment in the step (1) is 0.5-2 hours.
4. The method for preparing the silicon fertilizer from the gasifier coarse slag according to claim 1, wherein the drying temperature in the step (2) is 120-150 ℃.
5. The method for preparing the silicon fertilizer by using the gasifier coarse slag as claimed in claim 4, wherein the drying time in the step (2) is 8-9 hours.
6. The method for preparing the silicon fertilizer from the gasifier coarse slag according to claim 1, wherein the activating agent in the step (3) is at least one of calcium oxide, magnesium oxide and phosphorus-containing compounds.
7. The method for preparing the silicon fertilizer from the gasifier coarse slag according to claim 1, wherein the cosolvent in the step (3) is at least one of sodium hydroxide, sodium bicarbonate, sodium carbonate and potassium hydroxide.
8. The method for preparing the silicon fertilizer from the gasifier coarse slag according to claim 1, wherein the roasting temperature in the step (3) is 980-990 ℃.
9. The method for preparing the silicon fertilizer from the gasifier coarse slag according to claim 8, wherein the roasting time in the step (3) is 1-2.5 hours.
10. The method for preparing the silicon fertilizer from the gasifier coarse slag according to claim 1, wherein the mass ratio of the dried dealuminized slag, the activating agent and the cosolvent in the step (3) is 5:1:5-5:1: 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210144796.2A CN114478083A (en) | 2022-02-17 | 2022-02-17 | Method for preparing silicon fertilizer from coarse slag of gasification furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210144796.2A CN114478083A (en) | 2022-02-17 | 2022-02-17 | Method for preparing silicon fertilizer from coarse slag of gasification furnace |
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| CN114478083A true CN114478083A (en) | 2022-05-13 |
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| CN202210144796.2A Pending CN114478083A (en) | 2022-02-17 | 2022-02-17 | Method for preparing silicon fertilizer from coarse slag of gasification furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611684A (en) * | 2022-10-31 | 2023-01-17 | 陕西科技大学 | Method for preparing silicon fertilizer by using gasified slag |
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| CN111807878A (en) * | 2020-06-12 | 2020-10-23 | 成都新柯力化工科技有限公司 | Method for rapidly preparing dealuminized silicon fertilizer from fly ash |
| CN111943730A (en) * | 2020-07-14 | 2020-11-17 | 卢建军 | Preparation process of high-doped fly ash potassium-rich silicon fertilizer |
-
2022
- 2022-02-17 CN CN202210144796.2A patent/CN114478083A/en active Pending
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| US20080286383A1 (en) * | 2004-02-13 | 2008-11-20 | Garry Robert Nunn | Soluble Biogenic Silica and Application Using Same |
| CN101591197A (en) * | 2008-05-26 | 2009-12-02 | 同方环境股份有限公司 | A kind of method of utilizing pre-desiliconizing with high alumina fly ash to prepare calcium silicate fertilizer |
| CN101671202A (en) * | 2009-06-17 | 2010-03-17 | 阜新沃田肥业有限责任公司 | Silicon fertilizer and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115611684A (en) * | 2022-10-31 | 2023-01-17 | 陕西科技大学 | Method for preparing silicon fertilizer by using gasified slag |
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Inventor after: Tang Weikun Inventor after: Xu Zixin Inventor after: Nie Feng Inventor after: Li Jun Inventor after: Su Riguga Inventor after: Bao Feng Inventor after: Han Lihui Inventor before: Tang Weikun Inventor before: Xu Zixin Inventor before: Nie Feng Inventor before: Li Jun Inventor before: Su Riguga Inventor before: Bao Feng Inventor before: Han Lihui |
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Application publication date: 20220513 |