CN101284668A - Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash - Google Patents

Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash Download PDF

Info

Publication number
CN101284668A
CN101284668A CNA2007100653667A CN200710065366A CN101284668A CN 101284668 A CN101284668 A CN 101284668A CN A2007100653667 A CNA2007100653667 A CN A2007100653667A CN 200710065366 A CN200710065366 A CN 200710065366A CN 101284668 A CN101284668 A CN 101284668A
Authority
CN
China
Prior art keywords
carbon
solution
sodium
desiliconization
sodium aluminate
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.)
Granted
Application number
CNA2007100653667A
Other languages
Chinese (zh)
Other versions
CN101284668B (en
Inventor
孙俊民
姚强
张战军
张晓云
刘刚
曹慧芳
王彦武
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.)
TONGFANG ENVIRONMENT CO Ltd
Tsinghua University
Original Assignee
TONGFANG ENVIRONMENT CO Ltd
Tsinghua University
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 TONGFANG ENVIRONMENT CO Ltd, Tsinghua University filed Critical TONGFANG ENVIRONMENT CO Ltd
Priority to CN2007100653667A priority Critical patent/CN101284668B/en
Publication of CN101284668A publication Critical patent/CN101284668A/en
Application granted granted Critical
Publication of CN101284668B publication Critical patent/CN101284668B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

A method for extracting silicon dioxide, alumina and gallium oxide from high-alumina fly ash relates to the technology fields of environmental mineralogy and material, chemical industry and metallurgy. The method comprises the main steps as follows: causing the high-alumina fly ash to react with a sodium hydroxide solution; filtering the solution; introducing CO2 to the filtrate for full gelation; cleaning, purifying, drying, grinding and calcining the silica gel after gel filtration to obtain finished white carbon black; adding limestone and a sodium carbonate solution into the filter mass after the reaction and the filtration of the high-alumina fly ash and the sodium hydroxide solution; ball-grinding the mixture into raw slurry; dissolving out the clinker obtained by baking the raw slurry; deep-desiliconizing the filtrate to obtain a sodium aluminate extraction liquid; filtrating the sodium aluminate extraction liquid after subjecting the sodium aluminate extraction liquid to carbon dioxide decomposition; baking the aluminum hydroxide after washing the filter mass to form the aluminum hydroxide product; and extracting the gallium oxide from the carbon dioxide decomposition mother solution and desiliconized solution. The method has the advantages of cheap raw materials, simple operating procedures, low investment, low production cost, low energy consumption and less slag.

Description

A kind of method of from aluminous fly-ash, extracting silicon-dioxide, aluminum oxide and gallium oxide
Technical field
The present invention relates to environmental mineral and material, chemical industry and metallurgical technology field, particularly a kind of method of from aluminous fly-ash, extracting silicon-dioxide, aluminum oxide and gallium oxide.
Background technology
Along with the continuous increase of country to the metallurgical-grade aluminum oxide demand, and the minimizing day by day of China's bauxite reserves, the aluminum-containing mineral resource such as flyash, the coal gangue etc. that utilize mankind's activity to produce, replace natural bauxite to produce Industrial products such as aluminum oxide, and the recycling economy industrial chain of formation coal-electric power-metallurgy, paid more and more attention.Chinese patent of the prior art, " a kind of method of utilizing fly-ash Preparation aluminum and coproducing cement grog " of the patent No. 03131079.6 and two patents of invention of " utilizing the method for flyash and Wingdale combination producing aluminum oxide and cement " of the patent No. 200410090949.1 all relate to from flyash to be produced aluminum oxide and produces cement.The flyash of these two technology adds materials and is Wingdale, because the addition of Wingdale is bigger, cause energy consumption and become the quantity of slag higher, and other resource in the aluminous fly-ash does not make full use of.
White carbon black, i.e. hydrated SiO 2, a kind of white powder amorphous hydrated silica as a kind of important fine inorganic Chemicals, has extensive use in every field such as rubber, plastics, agricultural chemicals, paint, pharmacy, papermaking, household chemicalss.Chinese patent of the prior art, the patent No. is that the raw material that 93111642.2 patent of invention " is utilized coal ash to produce the method for carbon black and white carbon black " to adopt also is a flyash, but flyash need pass through flotation, drying, classification, levigate, homogenizing is handled the back and prepared white carbon black.Complex manufacturing, and material consumption is bigger, and production cost is also higher.
The purposes of gallium is very extensive, is mainly used in electronic industry, and the demand of the annual gallium in the whole world is 100 tons, and 80 tons of actual output less thaies, so the extraction of gallium also has good marketable value.Still find no at present the patented technology of from flyash, extracting gallium oxide.
Summary of the invention
In order to overcome the deficiency that above-mentioned prior art exists, purpose of the present invention provides a kind of method of extracting silicon-dioxide, aluminum oxide and gallium oxide from aluminous fly-ash.The cost of material that this method is used is cheap, operation steps simple, less investment, production cost is low, energy consumption is low, the quantity of slag is few.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows:
A kind of method of from aluminous fly-ash, extracting silicon-dioxide, aluminum oxide and gallium oxide, its key step is:
A) aluminous fly-ash and sodium hydroxide solution generate the filtrate and the desiliconization flyash filter cake of preparation white carbon black at autoclave internal reaction after-filtration.
B) in filtrate, feed CO 2Gas reacts, and when pH value drops to 13, stops ventilation.Filtrate leaving standstill removed post precipitation, under equality of temperature, continue in filtrate, to feed CO 2Up to the abundant gel of filtrate.
C) to gel solution hybrid filtering, the sodium carbonate solution after the filtration is desiliconization mother liquor and silica gel.By with the desiliconization mother liquor in Na 2O is that 1: 1 mol ratio adds milk of lime and carries out causticization, replenishes solid caustic soda after the NaOH solution concentration that causticization forms and returns step a) and recycle as sodium hydroxide solution.
D) add dilute hydrochloric acid in silica gel, with reacting liquid filtering, and water cleans silica gel behind the stirring reaction.With clean silica gel after the removal of impurities dry, grind, calcine the finished product white carbon black.
E) in filter cake, add thin Wingdale and, mixture is ground into charge pulp at the ball mill endosphere through spissated sodium carbonate solution.
F) charge pulp is sent into rotary kiln baking, reclaim the CO that roasting produces with solvent method 2, CO 2Be used to prepare the refine carbon branch of liquid of white carbon black and sodium aluminate after concentrating.
G) the grog water stripping of charge pulp roasting generation, filtrate is crude liquor of sodium aluminate, filter cake is the silico-calcium slag.
H) with two sections desiliconization methods to the crude liquor of sodium aluminate deep desilication, obtain the sodium aluminate liquid of refining.
I) sodium aluminate is refined liquid divides carbon branch in the tower group at carbon.
J) carbon divides after-filtration, is aluminium hydroxide after the filter cake washing, forms alumina product through roasting.Washings is joined step I) carbon mother liquid in mix, concentrate and additional solid sodium carbonate returns step e) and recycles.
K) carbon mother liquid and desiliconization Recycling Mother Solution become rich Ga solution after using repeatedly, adopt carbon fractional precipitation-dissolution of sodium hydroxide method to make the further enrichment of gallium oxide, adopt resin adsorption method therefrom to extract gallium oxide then.
In aforesaid method, described with the part silicon-dioxide in the sodium hydroxide solution extraction aluminous fly-ash, the concentration of sodium hydroxide solution is 15-30%, the mass ratio of sodium hydroxide and aluminous fly-ash is 0.3-0.8: 1, temperature of reaction is 90-150 ℃, reaction times is 2-4 hour, SiO in the desiliconization filtrate 2Concentration be 50-80g/l, Si/Al is 40-50.
In aforesaid method, describedly in desiliconization filtrate, feed CO 2The temperature of reaction of carrying out gel is 40-70 ℃, and the pH value of impurity A l precipitate and separate is controlled at 13, and except that the Si/Al in the solution behind the Al is 70-80, the pH value of final gel is 10-12.
In aforesaid method, behind the described hi-sil, the dilute hydrochloric acid concentration when with dilute hydrochloric acid the yellow soda ash that is mingled with in the silica gel being removed and washing with water is 15-20%, and the volume of dilute hydrochloric acid and the weight ratio of aluminous fly-ash are 0.02-0.08m 3: 1 ton, temperature of reaction is 50-75 ℃, and the reaction times is 1-2 hour.
In aforesaid method, the bake out temperature after the described silica gel removal of impurities is 80-105 ℃, and calcining temperature is 450-750 ℃, and calcination time is 1-3 hour.
In aforesaid method, the aluminous fly-ash after the described desiliconization, the Wingdale after pulverizing, the charge pulp water ratio that sodium carbonate solution mixes with water and ball milling is made is 30-40%, and Al/Si is than being 2.0-2.5, and the calcium saturation ratio is 0.75-1, and the sodium saturation ratio is 0.90-1.4.
In aforesaid method, described charge pulp is 950-1150 ℃ in the temperature range of revolution roasting in kilns, and the grog index is: Al/Si is than 2.0-2.4, and the calcium saturation ratio is 0.70-1, and the sodium saturation ratio is 0.85-1.35.
In aforesaid method, the leaching condition of the grog that described stripping sinters is: water/clinker quality is than being 1.7-2.5: 1, and the stripping temperature range is 55-75 ℃, the time is 5-30 minute.After stripping finishes, enter separation system and carry out solid-liquid separation, the crude liquor of sodium aluminate after the separation enters the carbon operation break-down, and solid-state silico-calcium slag is produced cement and other building material made with desulfurized gesso of flue gas after washing.
In aforesaid method, the index of described stripping crude liquor of sodium aluminate is: Al 2O 3Concentration is 100-150g/l, and causticity is than being 1.05-1.25; Al/Si is 90-120.
In aforesaid method, describedly the sodium aluminate coarsening solution is carried out deep desilication carry out in two stages in reactor, fs adds the Bayer process red mud of 15-20g/l 150-170 ℃ of desiliconization 2-4 hour of pressurizeing down, subordinate phase is carried out degree of depth silica removal for the sodium aluminate after the first desiliconization is added milk of lime, the add-on of CaO is the 4-6 gram in every liter of sodium aluminate solution, 90-95 ℃ of silica removal temperature, reaction times 1.5-2 hour, the Al/Si that sodium aluminate is refined in the liquid behind the degree of depth silica removal surpassed 1000.
In aforesaid method, feed CO described the branch at carbon in sodium aluminate is refined liquid in the tower group 2The temperature that carbon divides is 75 ℃, and it is 10.5 that carbon divides the pH value of terminal point control.
In aforesaid method, describedly adopt carbon fractional precipitation-dissolution of sodium hydroxide method to make the method for the further enrichment of gallium oxide be to carbon mother liquid and desiliconization mother liquor: carbon branch temperature is 70 ℃ for the first time, and the terminal point pH value is controlled at 10.5-11; Carry out the carbon branch second time after filtering out aluminum hydroxide precipitation, carbon branch temperature is 50-60 ℃, and the terminal point pH value is controlled at 8, solution is separated out post precipitation and liquid phase separation, with NaOH solution precipitation is carried out stripping, 80-90 ℃ of stripping temperature, NaOH concentration is 15-20%, and dissolution time is 1-3 hour; Dissolution fluid carries out carbon branch for the third time, and carbon divides condition with for the second time identical, treats after precipitation is separated out precipitated phase to be separated and dissolve once more with NaOH.
Compare with existing limestone sintering method, characteristics of the present invention are:
1,1 ton of aluminum oxide of every production needs the overburnt material total mass for the treatment of of preparation to reduce more than 1/3.
2, under the constant condition of soaking time, the maturing temperature of raw material reduces about 250 ℃.
3, the one-tenth quantity of slag of aluminum oxide per ton reduces 70-80%.
4, sodium aluminate is easy to stripping in the grog, and leaching condition is spacious, Al in the dissolution fluid 2O 3Concentration bring up to 120-140g/l by the 20-30g/l of limestone sintering method, and causticity is than being reduced to 1.1-1.2 by 1.7, this just makes the easier deep desilication that carries out of this solution handle.
5, Al 2O 3Extraction yield can improve about 5%.
6, for the flyash that is rich in gallium oxide, from recycle to a certain degree carbon mother liquid and sodium hydroxide solution extract gallium oxide.
7, in whole process of production, CO in the conversion between sodium hydroxide and the yellow soda ash, the kiln gas 2Recycling organic and reasonably combine, both reduced the circulation of material, saved cost, also simplified production link, reduced the shared space of material.
Use the inventive method can make the alumina product that meets standard GB 8178-87 and People's Republic of China's non-ferrous metal industry aluminum oxide standard (YS/T 274-1998), and the white carbon black product that meets standard GB 10517-89, can produce building material product and extract the silico-calcium slag that aluminum oxide produced, demonstrate fully the Scientific Outlook on Development of making the best use of everything.
The present invention will be further described below in conjunction with accompanying drawing.
Description of drawings
Accompanying drawing is technological process of production figure of the present invention.
Embodiment
Referring to accompanying drawing, the method steps when the present invention uses is:
A) with 15% sodium hydroxide solution and aluminous fly-ash under 120 ℃ at 3 hours after-filtration of autoclave internal reaction, filtrate is as the raw material of preparation white carbon black, and filter cake is desiliconization flyash.
B) under 70 ℃ condition, in filtrate, feed CO 2React, when pH value drops to 13, stop ventilation.After filtrate is left standstill 30 minutes, the precipitation that produces is removed, under equality of temperature, continue logical CO in filtrate 2Up to the abundant gel of solution.C) mixed system of gel and solution is filtered, the sodium carbonate solution after the filtration is the desiliconization mother liquor, by with the desiliconization mother liquor in Na 2O is that 1: 1 mol ratio adds milk of lime 95 ℃ of following causticizations.Replenishing the small amount of solid caustic soda after the NaOH solution concentration that causticization forms returns step a) and recycles.
D) filter cake is the silica gel that contains a small amount of yellow soda ash, and the ratio of joining 60 kilograms of dilute hydrochloric acid in aluminous fly-ash per ton adds 20% dilute hydrochloric acid in silica gel, reacting liquid filtering is fallen after 1 hour at 60 ℃ of following stirring reactions, and water fully cleans silica gel.Silica gel after the removal of impurities is in 105 ℃ of oven dry down, pulverizing, and calcining was exactly the finished product white carbon black in two hours under 550 ℃.
E) with the aluminous fly-ash after the desiliconization, levigated Wingdale, preceding batch carbon mother liquid sodium carbonate solution and water are mixed in proportion, flyash: Wingdale: the mass ratio of yellow soda ash is 1: 0.55: 0.61, the water ratio of mixed system is 35%, and mixed system abundant ball milling in ball mill is made charge pulp.
F) charge pulp is pressed into rotary kiln baking, roasting condition is: be incubated 1 hour down at 980 ℃.And reclaim the CO that roasting produces with industrial sophisticated solvent method 2, be used to prepare the refine carbon branch of liquid of white carbon black and sodium aluminate after concentrating.
G) after grog burnt till, water was to the stripping of roasting grog, and leaching condition is: 65 ℃ of temperature, and 25 minutes time, the mass ratio of water and grog is 2: 1; Filtrate is crude liquor of sodium aluminate, and filter cake is the silico-calcium slag.
H) with two sections desiliconization methods crude liquor of sodium aluminate is carried out deep desilication, obtain the sodium aluminate liquid of refining, the desiliconization condition is: first desiliconization, and every liter of crude liquor of sodium aluminate adds sodium white residue 15 grams, 150 ℃ of desiliconization temperature, desiliconization time 3 hours, with sodium white residue precipitate and separate, add milk of lime then and carry out the desiliconization second time after the first desiliconization, the desiliconization condition is that the CaO addition of every liter of solution is 6 grams, the desiliconization temperature is 95 ℃, 2 hours reaction times.
I) liquid of refining of the sodium aluminate after the desiliconization divides carbon branch in the tower group at carbon, and carbon branch condition is; Carbon branch temperature is 80 ℃, and the terminal point pH value is 10.
J) carbon filters after dividing end, filter cake carries out roasting through the aluminium hydroxide after the washing by industrial sophisticated scheme and forms alumina product, washing lotion joins in the carbon mother liquid, it is concentrated to concentration about 25% after, replenish a spot of solid sodium carbonate and return step e) and recycle.
K) carbon mother liquid and desiliconization Recycling Mother Solution use after certain number of times, become rich Ga solution, can adopt three carbon fractional precipitation-dissolution of sodium hydroxide methods to make the further enrichment of gallium oxide in succession, adopt resin adsorption method therefrom to extract gallium oxide then.Carbon branch temperature is 70 ℃ for the first time, the terminal point pH value is controlled at 11, carry out the carbon branch second time after filtering out aluminum hydroxide precipitation, carbon branch temperature is 60 ℃, and the terminal point pH value is controlled at 8, solution is separated out after the precipitation, with liquid phase separation, with NaOH solution precipitation is carried out stripping then, 90 ℃ of stripping temperature, NaOH concentration is 10%, and dissolution time is 2 hours.Dissolution fluid is carried out carbon branch for the third time, and carbon divides condition with for the second time identical, treats after precipitation is separated out precipitated phase to be separated and dissolve once more with NaOH, adopts industrial resin adsorption method commonly used to extract gallium oxide in the solution then.

Claims (12)

1, a kind of method of from aluminous fly-ash, extracting silicon-dioxide, aluminum oxide and gallium oxide, its key step is:
A) aluminous fly-ash and sodium hydroxide solution generate the filtrate and the desiliconization flyash filter cake of preparation white carbon black at autoclave internal reaction after-filtration;
B) in filtrate, feed CO 2Gas reacts, and when pH value drops to 13, stops ventilation, and filtrate leaving standstill removed post precipitation, continues to feed in filtrate CO under equality of temperature 2Up to the abundant gel of filtrate;
C) to gel solution hybrid filtering, the sodium carbonate solution after the filtration is desiliconization mother liquor and silica gel, by with the desiliconization mother liquor in Na 2O is that 1: 1 mol ratio adds milk of lime and carries out causticization, replenishes solid caustic soda after the NaOH solution concentration that causticization forms and returns step a) and recycle as sodium hydroxide solution;
D) add dilute hydrochloric acid in silica gel, with reacting liquid filtering, and water cleans silica gel behind the stirring reaction, with clean silica gel after the removal of impurities dry, grind, calcine the finished product white carbon black;
E) in filter cake, add thin Wingdale and, mixture is ground into charge pulp at the ball mill endosphere through spissated sodium carbonate solution;
F) charge pulp is sent into rotary kiln baking, reclaim the CO that roasting produces with solvent method 2, CO 2Be used to prepare the refine carbon branch of liquid of white carbon black and sodium aluminate after concentrating;
G) the grog water stripping of charge pulp roasting generation, filtrate is crude liquor of sodium aluminate, filter cake is the silico-calcium slag;
H) with two sections desiliconization methods to the crude liquor of sodium aluminate deep desilication, obtain the sodium aluminate liquid of refining;
I) sodium aluminate is refined liquid divides carbon branch in the tower group at carbon;
J) carbon divides after-filtration, is aluminium hydroxide after the filter cake washing, forms alumina product through roasting, and washings is joined step I) carbon mother liquid in mix, concentrate and additional solid sodium carbonate returns step e) and recycles;
K) carbon mother liquid and desiliconization Recycling Mother Solution become rich Ga solution after using repeatedly, adopt carbon fractional precipitation-dissolution of sodium hydroxide method to make the further enrichment of gallium oxide, adopt resin adsorption method therefrom to extract gallium oxide then.
2, method according to claim 1, it is characterized in that, described with the part silicon-dioxide in the sodium hydroxide solution extraction aluminous fly-ash, the concentration of sodium hydroxide solution is 15-30%, the mass ratio of sodium hydroxide and aluminous fly-ash is 0.3-0.8: 1, temperature of reaction is 90-150 ℃, and the reaction times is 2-4 hour, SiO in the desiliconization filtrate 2Concentration be 50-80g/l, Si/Al is 40-50.
3, method according to claim 1 and 2 is characterized in that, describedly feeds CO in desiliconization filtrate 2The temperature of reaction of carrying out gel is 40-70 ℃, and the pH value of impurity A l precipitate and separate is controlled at 13, and except that the Si/Al in the solution behind the Al is 70-80, the pH value of final gel is 10-12.
4, method according to claim 3, it is characterized in that, behind the described hi-sil, the dilute hydrochloric acid concentration when with dilute hydrochloric acid the yellow soda ash that is mingled with in the silica gel being removed and washing with water is 15-20%, and the volume of dilute hydrochloric acid and the weight ratio of aluminous fly-ash are 0.02-0.08m 3: 1 ton, temperature of reaction is 50-75 ℃, and the reaction times is 1-2 hour.
5, method according to claim 4 is characterized in that, the bake out temperature after the described silica gel removal of impurities is 80-105 ℃, and calcining temperature is 450-750 ℃, and calcination time is 1-3 hour.
6, method according to claim 1 and 2, it is characterized in that, aluminous fly-ash after the described desiliconization, Wingdale after pulverizing, the charge pulp water ratio that sodium carbonate solution mixes with water and ball milling is made is 30-40%, Al/Si is than being 2.0-2.5, and the calcium saturation ratio is 0.75-1, and the sodium saturation ratio is 0.90-1.4.
7, method according to claim 6 is characterized in that, described charge pulp is 950-1150 ℃ in the temperature range of revolution roasting in kilns, and the grog index is: Al/Si is than 2.0-2.4, and the calcium saturation ratio is 0.70-1, and the sodium saturation ratio is 0.85-1.35.
8, method according to claim 7 is characterized in that, the leaching condition of the grog that described stripping sinters is: water/clinker quality is than being 1.7-2.5: 1, and the stripping temperature range is 55-75 ℃, the time is 5-30 minute; After stripping finishes, enter separation system and carry out solid-liquid separation, the crude liquor of sodium aluminate after the separation enters the carbon operation break-down, and solid-state silico-calcium slag is produced cement and other building material made with desulfurized gesso of flue gas after washing.
9, method according to claim 8 is characterized in that, the index of described stripping crude liquor of sodium aluminate is: Al 2O 3Concentration is 100-150g/l, and causticity is than being 1.05-1.25; Al/Si is 90-120.
10, method according to claim 9, it is characterized in that, describedly the sodium aluminate coarsening solution is carried out deep desilication carry out in two stages in reactor, fs adds the Bayer process red mud of 15-20g/l 150-170 ℃ of desiliconization 2-4 hour of pressurizeing down, subordinate phase is carried out degree of depth silica removal for the sodium aluminate after the first desiliconization is added milk of lime, the add-on of CaO is the 4-6 gram in every liter of sodium aluminate solution, 90-95 ℃ of silica removal temperature, reaction times 1.5-2 hour, the Al/Si that sodium aluminate is refined in the liquid behind the degree of depth silica removal surpassed 1000.
11, method according to claim 10 is characterized in that, feed CO described the branch at carbon in sodium aluminate is refined liquid in the tower group 2The temperature that carbon divides is 75 ℃, and it is 10.5 that carbon divides the pH value of terminal point control.
12, method according to claim 10, it is characterized in that, describedly adopt carbon fractional precipitation-dissolution of sodium hydroxide method to make the method for the further enrichment of gallium oxide be to carbon mother liquid and desiliconization mother liquor: carbon branch temperature is 70 ℃ for the first time, and the terminal point pH value is controlled at 10.5-11; Carry out the carbon branch second time after filtering out aluminum hydroxide precipitation, carbon branch temperature is 50-60 ℃, and the terminal point pH value is controlled at 8, solution is separated out post precipitation and liquid phase separation, with NaOH solution precipitation is carried out stripping, 80-90 ℃ of stripping temperature, NaOH concentration is 15-20%, and dissolution time is 1-3 hour; Dissolution fluid carries out carbon branch for the third time, and carbon divides condition with for the second time identical, treats after precipitation is separated out precipitated phase to be separated and dissolve once more with NaOH.
CN2007100653667A 2007-04-12 2007-04-12 Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash Active CN101284668B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007100653667A CN101284668B (en) 2007-04-12 2007-04-12 Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007100653667A CN101284668B (en) 2007-04-12 2007-04-12 Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash

Publications (2)

Publication Number Publication Date
CN101284668A true CN101284668A (en) 2008-10-15
CN101284668B CN101284668B (en) 2010-08-04

Family

ID=40057115

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2007100653667A Active CN101284668B (en) 2007-04-12 2007-04-12 Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash

Country Status (1)

Country Link
CN (1) CN101284668B (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966999A (en) * 2010-11-11 2011-02-09 中国地质大学(北京) Method for extracting aluminum oxide and white carbon black through two-step alkaline leaching method by adopting high-alumina fly ash
CN102249253A (en) * 2011-01-06 2011-11-23 内蒙古大唐国际再生资源开发有限公司 Method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash
CN102249247A (en) * 2011-06-05 2011-11-23 况东华 Circulatory production process for superfine silicon dioxide
CN102328931A (en) * 2011-06-30 2012-01-25 中煤平朔煤业有限责任公司 Method for continuously producing white carbon black by utilizing low-concentration sodium silicate solution
CN101792161B (en) * 2010-01-18 2013-01-16 马昱昭 Method for extracting high purity alumina and silica gel from fly ash in coal-fired power plants
CN102897810A (en) * 2012-11-06 2013-01-30 大唐国际发电股份有限公司 Method for producing aluminum oxide by using fly ash
CN102923742A (en) * 2012-11-19 2013-02-13 河北工程大学 Method for comprehensively extracting aluminum and lithium from coal ash
DE112011101461T5 (en) 2010-04-27 2013-02-28 China Shenhua Energy Company Limited Method for extracting gallium from fly ash
DE112011101460T5 (en) 2010-04-27 2013-02-28 China Shenhua Energy Company Limited Method for extracting gallium from fly ash
CN103058239A (en) * 2013-01-30 2013-04-24 山西大学 Method of extracting aluminum oxide and white carbon black from pulverized fuel ash
CN103060573A (en) * 2012-12-06 2013-04-24 中南大学 Comprehensive recovery technology of valuable components in corundum smelting smoke ash containing gallium and potassium
CN103074498A (en) * 2012-12-31 2013-05-01 西部矿业集团有限公司 Method for acid-leaching gallium from coal ash through microwave heating
CN103332711A (en) * 2013-05-17 2013-10-02 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Deep desilicication method of high-alumina fly ash
CN103819086A (en) * 2012-11-16 2014-05-28 神华集团有限责任公司 Method for preparing soda-lime silicate glass basic recipe, and method for extracting aluminum from pulverized fuel ash and co-producing glass
CN103849897A (en) * 2014-02-28 2014-06-11 云南云铝涌鑫铝业有限公司 Method of preparing metal aluminum
CN104043639A (en) * 2014-06-27 2014-09-17 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Production method of desiliconized coal ash
CN105039773A (en) * 2015-09-02 2015-11-11 程礼华 Production device and process of graphene alloy materials prepared from high-alumina fly ash
CN105174292A (en) * 2014-06-06 2015-12-23 神华集团有限责任公司 Fly ash predesilication method, predesilication reaction method, predesilication slurry separation method and fly ash aluminum-extracting method
CN105621429A (en) * 2016-04-08 2016-06-01 东北电力大学 Fly ash pressurized alkali-dissolution desilication treatment method
US9517965B2 (en) 2012-11-27 2016-12-13 National Institute Of Clean-And-Low-Carbon Energy Method for preparing a soda-lime-silica glass basic formulation and a method for extracting aluminum from coal ash for co-production of glass
CN106542542A (en) * 2015-09-16 2017-03-29 神华集团有限责任公司 A kind of 13X zeolite molecular sieves and its preparation method and application
CN107522214A (en) * 2017-08-11 2017-12-29 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Utilize the method and system of flyash production aluminium hydroxide
CN108658109A (en) * 2018-07-03 2018-10-16 贵州大学 A kind of technique recycling aluminium using ardealite and coal ash for manufacturing for pulverized fuel ash cement
CN110272299A (en) * 2018-03-15 2019-09-24 国家能源投资集团有限责任公司 Coal ash for manufacturing for siliceous fertilizer method
CN113045341A (en) * 2019-12-26 2021-06-29 国家能源投资集团有限责任公司 Method for preparing alkali-free silicon fertilizer from silicon-containing acid treatment solution and alkali-free silicon fertilizer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100457628C (en) * 2006-06-02 2009-02-04 李禹� Method of extracting aluminium oxide from fly ash and simultaneously producing white carbon black

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792161B (en) * 2010-01-18 2013-01-16 马昱昭 Method for extracting high purity alumina and silica gel from fly ash in coal-fired power plants
DE112011101461T5 (en) 2010-04-27 2013-02-28 China Shenhua Energy Company Limited Method for extracting gallium from fly ash
US8728296B2 (en) 2010-04-27 2014-05-20 China Shenhua Energy Company Limited Method for extracting gallium from fly ash
DE112011101460T5 (en) 2010-04-27 2013-02-28 China Shenhua Energy Company Limited Method for extracting gallium from fly ash
CN101966999A (en) * 2010-11-11 2011-02-09 中国地质大学(北京) Method for extracting aluminum oxide and white carbon black through two-step alkaline leaching method by adopting high-alumina fly ash
CN101966999B (en) * 2010-11-11 2012-11-21 中国地质大学(北京) Method for extracting aluminum oxide and white carbon black through two-step alkaline leaching method by adopting high-alumina fly ash
CN102249253A (en) * 2011-01-06 2011-11-23 内蒙古大唐国际再生资源开发有限公司 Method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash
CN102249253B (en) * 2011-01-06 2013-05-01 内蒙古大唐国际再生资源开发有限公司 Method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash
US9139445B2 (en) 2011-05-11 2015-09-22 Inner Mongolia Datang International Recycling Resource Development Co., Ltd. Method for co-producing alumina and activated calcium silicate from high-alumina fly ash
WO2012151767A1 (en) * 2011-05-11 2012-11-15 内蒙古大唐国际再生资源开发有限公司 Method for preparing alumina from high alumina fly ash and co-producing active calcium silicate
CN102249247A (en) * 2011-06-05 2011-11-23 况东华 Circulatory production process for superfine silicon dioxide
CN102328931B (en) * 2011-06-30 2012-11-21 中煤平朔煤业有限责任公司 Method for continuously producing white carbon black by utilizing low-concentration sodium silicate solution
CN102328931A (en) * 2011-06-30 2012-01-25 中煤平朔煤业有限责任公司 Method for continuously producing white carbon black by utilizing low-concentration sodium silicate solution
CN102897810A (en) * 2012-11-06 2013-01-30 大唐国际发电股份有限公司 Method for producing aluminum oxide by using fly ash
CN102897810B (en) * 2012-11-06 2015-04-22 大唐国际发电股份有限公司 Method for producing aluminum oxide by using fly ash
CN103819086B (en) * 2012-11-16 2016-12-21 神华集团有限责任公司 A kind of method preparing soda lime glass basic recipe and the method for aluminum-extracted pulverized fuel ash coproduction glass
CN103819086A (en) * 2012-11-16 2014-05-28 神华集团有限责任公司 Method for preparing soda-lime silicate glass basic recipe, and method for extracting aluminum from pulverized fuel ash and co-producing glass
CN102923742B (en) * 2012-11-19 2014-07-09 河北工程大学 Method for comprehensively extracting aluminum and lithium from coal ash
CN102923742A (en) * 2012-11-19 2013-02-13 河北工程大学 Method for comprehensively extracting aluminum and lithium from coal ash
US9517965B2 (en) 2012-11-27 2016-12-13 National Institute Of Clean-And-Low-Carbon Energy Method for preparing a soda-lime-silica glass basic formulation and a method for extracting aluminum from coal ash for co-production of glass
CN103060573A (en) * 2012-12-06 2013-04-24 中南大学 Comprehensive recovery technology of valuable components in corundum smelting smoke ash containing gallium and potassium
CN103060573B (en) * 2012-12-06 2014-07-09 中南大学 Comprehensive recovery technology of valuable components in corundum smelting smoke ash containing gallium and potassium
CN103074498B (en) * 2012-12-31 2016-10-19 西部矿业股份有限公司 With microwave heating from the method for flyash Ore Leaching gallium
CN103074498A (en) * 2012-12-31 2013-05-01 西部矿业集团有限公司 Method for acid-leaching gallium from coal ash through microwave heating
CN103058239B (en) * 2013-01-30 2014-10-08 山西大学 Method of extracting aluminum oxide and white carbon black from pulverized fuel ash
CN103058239A (en) * 2013-01-30 2013-04-24 山西大学 Method of extracting aluminum oxide and white carbon black from pulverized fuel ash
CN103332711A (en) * 2013-05-17 2013-10-02 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Deep desilicication method of high-alumina fly ash
CN103849897A (en) * 2014-02-28 2014-06-11 云南云铝涌鑫铝业有限公司 Method of preparing metal aluminum
CN103849897B (en) * 2014-02-28 2016-06-01 云南云铝涌鑫铝业有限公司 Prepare the method for metallic aluminium
CN105174292B (en) * 2014-06-06 2018-01-26 神华集团有限责任公司 Flyash method for desilication and pre-desiliconizing reaction method and pre-desiliconizing slurries separation method and aluminum-extracted pulverized fuel ash method
CN105174292A (en) * 2014-06-06 2015-12-23 神华集团有限责任公司 Fly ash predesilication method, predesilication reaction method, predesilication slurry separation method and fly ash aluminum-extracting method
CN104043639B (en) * 2014-06-27 2016-08-17 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 A kind of production method of desiliconization flyash
CN104043639A (en) * 2014-06-27 2014-09-17 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Production method of desiliconized coal ash
CN105039773A (en) * 2015-09-02 2015-11-11 程礼华 Production device and process of graphene alloy materials prepared from high-alumina fly ash
CN105039773B (en) * 2015-09-02 2017-01-11 程礼华 Production device and process of graphene alloy materials prepared from high-alumina fly ash
CN106542542A (en) * 2015-09-16 2017-03-29 神华集团有限责任公司 A kind of 13X zeolite molecular sieves and its preparation method and application
CN106542542B (en) * 2015-09-16 2019-02-15 神华集团有限责任公司 A kind of 13X zeolite molecular sieve and its preparation method and application
CN105621429A (en) * 2016-04-08 2016-06-01 东北电力大学 Fly ash pressurized alkali-dissolution desilication treatment method
CN107522214A (en) * 2017-08-11 2017-12-29 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Utilize the method and system of flyash production aluminium hydroxide
CN107522214B (en) * 2017-08-11 2019-05-10 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Utilize the method and system of flyash production aluminium hydroxide
CN110272299A (en) * 2018-03-15 2019-09-24 国家能源投资集团有限责任公司 Coal ash for manufacturing for siliceous fertilizer method
CN108658109A (en) * 2018-07-03 2018-10-16 贵州大学 A kind of technique recycling aluminium using ardealite and coal ash for manufacturing for pulverized fuel ash cement
CN113045341A (en) * 2019-12-26 2021-06-29 国家能源投资集团有限责任公司 Method for preparing alkali-free silicon fertilizer from silicon-containing acid treatment solution and alkali-free silicon fertilizer

Also Published As

Publication number Publication date
CN101284668B (en) 2010-08-04

Similar Documents

Publication Publication Date Title
CN101284668B (en) Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash
CN102249253B (en) Method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash
CN100542961C (en) A kind of technology of processing bauxite to produce hydroted alumina with sodium hydroxide molten salt growth method
CN101306426B (en) Method for extracting iron washed ore from fly ash or slag
CN102424391B (en) Method for comprehensive utilization of aluminum-containing material
CN101913632B (en) Method for extracting aluminum oxide, monox and ferric oxide from gangue combustion ashes
CN102351226B (en) Method for producing aluminum oxide from fly ash
CN102627305B (en) Method using alkaline process to extract alumina in coal ash
CN101306826B (en) Process for extracting metallurgy-level aluminum oxide from fly ash or slag
CN103145161B (en) Method for preparing pseudo-boehmite co-preparation white carbon black by coal gangue
CN102225778A (en) Method for production of alumina, joint product of cement and joint product of 4A zeolite molecular sieve with high aluminum fly ash
CN101993256B (en) Method for preparing agricultural potassium sulfate from potassium-rich rock
CN101941725A (en) Method for extracting aluminum oxide from coal gangue and co-producing active calcium silicate
CN101838006B (en) Novel method for separating strontium carbonate waste slag acid leaching slurry
CN101306926B (en) Process for abstracting floating air ball from fly ash or slag
CN101306819B (en) Process for abstracting white carbon black from fly ash or slag
CN103130254A (en) Method for producing aluminum oxide by using alkaline method
CN105800653A (en) Method for extracting aluminum oxide from fly ash on basis of soda-lime sintering process
CN101913633B (en) Extraction technology of alumina and potassium sulfate from alunite by using hot-pressing leaching process
CN103395793A (en) Method for preparing aluminum oxide and white carbon black by utilizing oil shale ash
CN103408050B (en) Method of efficient extraction of aluminum, iron, and titanium in coal gangue
CN102126735B (en) Method for extracting tschermigite from coal gangue or stone coal
CN101870484B (en) Process for producing aluminium hydroxide and cement by utilizing fly ash
CN101913615A (en) Method for improving alumina silica ratio of low-grade bauxite
CN102115813B (en) Comprehensive utilization method for low-grade magnesite

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant