CN103936048B - A kind of recoverying and utilizing method of flyash acidity extraction aluminum oxide technology sewage - Google Patents
A kind of recoverying and utilizing method of flyash acidity extraction aluminum oxide technology sewage Download PDFInfo
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- CN103936048B CN103936048B CN201310018071.XA CN201310018071A CN103936048B CN 103936048 B CN103936048 B CN 103936048B CN 201310018071 A CN201310018071 A CN 201310018071A CN 103936048 B CN103936048 B CN 103936048B
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Abstract
The invention discloses a kind of recoverying and utilizing method of flyash acidity extraction aluminum oxide technology sewage, the sewage utilizing the waste steel slag treated coal ash acidity extraction aluminum oxide of discharging in steelmaking process to produce, reclaim wherein aluminum oxide and ferric oxide, and consumption acids solution, the combined recovery belonged to containing aluminium spent acid and solid waste utilizes technical field.First waste steel slag joins in sewage with certain solid-liquid ratio by the method; Service temperature is 50-100 DEG C, and the reaction times is 1-3h; The hydrogen recovery produced in reaction, for providing thermal source for reaction; Solid-liquid separation, associating removal of impurities, crystallization, calcining, obtain aluminum oxide and ferric oxide solid; The filter residue of solid-liquid separation can be doped in waste steel slag, and doping ratio is 1-10:1(waste steel slag: filter residue), realize recycle.The present invention utilizes the waste steel slag treated coal ash acidity extraction aluminum oxide technology sewage of discharging in steelmaking process, and the treatment of wastes with processes of wastes against one another, achieves combined governance and the resource reclaim of liquid-solid waste.
Description
Technical field
The invention belongs to a kind of recoverying and utilizing method of flyash acidity extraction aluminum oxide technology sewage, particularly the combined recovery of sewage and solid waste utilizes technical field.
Background technology
China is the maximum country of thermal power generation in the world, and be also the maximum country of flyash quantity discharged, in recent years, China's electric power industry development is rapid, and thermoelectricity generating total amount also increases sharply, and thus, the quantity discharged of flyash is also increasing year by year.
Owing to containing higher Al in flyash
2o
3, content generally can reach 20% ~ 40%, reaches as high as more than 50%, and bauxite can be replaced to become a kind of well alumina resource, and the technology therefore extracting aluminum oxide from flyash is got more and more pay close attention to and research.The method of China's treated coal ash mainly contains pickling process, alkali fusion.Wherein pickling process is comparatively flexible relative to alkali fusion, and secondary residual is less, and easily realizes silicon and aluminium in flyash, being thoroughly separated of iron, and becomes the hot fields that flyash extracts aluminum oxide research.But produce a large amount of containing aluminic acid liquid in acidity extraction alumina process, if directly discharge not only can cause the waste of resource, also can cause very large destruction to environment.
Waste steel slag discharges to obtain waste residue in Steel-making project, and its output accounts for the 15-20% of coarse steel slag output.Current China often produces nearly 200,000,000 tons of steel per year, and slag output about 8,300 ten thousand tons, stores up more than 200,000,000 ton, untreated slag in addition for many years, take up an area nearly 300,000,000 mu.Storing up of slag, not only takies a large amount of arable land, simultaneously contaminate environment, so best outlet is exactly the comprehensive utilization of exploitation slag, turns waste into wealth.
Literature search shows, does not still openly utilize waste steel slag to carry out the recoverying and utilizing method of treated coal ash acidity extraction aluminum oxide technology sewage at present.
Summary of the invention
Object of the present invention is just for above-mentioned the deficiencies in the prior art, provides a kind of recoverying and utilizing method of flyash acidity extraction aluminum oxide technology sewage.
The present invention is the sewage utilizing the waste steel slag treated coal ash acidity extraction aluminum oxide of discharging in steelmaking process to produce, and reclaims wherein aluminum oxide and ferric oxide, and consumption acids solution.Its key is in the treatment of wastes with processes of wastes against one another, and what not only produce in solution flyash acidity extraction alumina process contains aluminium spent acid, has fully utilized the waste steel slag produced in steelmaking process simultaneously, has extracted wherein rich in natural resources, reduced environmental pollution.
The technology of the present invention solution is: flyash acidity extraction aluminum oxide technology wastewater ocean disposal method is achieved through the following technical solutions:
The waste steel slag of discharging in steelmaking process is joined flyash acidity extraction aluminum oxide produces containing in aluminium sewage, reacting by heating, in waste steel slag the acid-respons in oxide compound and sewage, generate corresponding vitriol and hydrogen, collect hydrogen for reaction and heat is provided.Through solid-liquid separation, associating removal of impurities, crystallization, calcining and other processes after reaction terminates, obtain aluminum oxide and ferric oxide.Filter residue after solid-liquid separation is doped in waste steel slag by a certain percentage, makes full use of, and reduces the discharge of solid waste.
The steps include: that (1) raw material prepares: in flyash acidity extraction aluminum oxide technology sewage, aluminium ion concentration is at 0.1-0.3 mol/L, and sulfuric acid concentration is 1-20%; (2) take liquid-solid ratio as 20-5:1(sewage and waste steel slag ratio take mL:g as benchmark) waste steel slag is joined in sewage, stir, join in reactor; (3) at temperature of reaction is 50-100 DEG C, 1-3 h is reacted; And collect the gas of reaction generation, gas is used for for reaction provides thermal source; (4) reacted solution is carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; There is Tai-Ace S 150 to be known technology with the corresponding oxide that is separated and is converted into of ferric sulfate, be not repeated; Filter the filter residue obtained to be entrained in by a certain percentage in waste steel slag, doping ratio is 1-10:1(waste steel slag: filter residue) recycle.
Embodiment
Be described in further detail below in conjunction with actual example:
Example one, (1) raw material prepare: in flyash acidity extraction aluminum oxide technology sewage, aluminium ion concentration is at 0.13 mol/L, and sulfuric acid concentration is 6.7%; (2) get above-mentioned sewage 100mL, waste steel slag 5g, waste steel slag is joined in sewage, stir, join in reactor; (3) at temperature of reaction is 60 DEG C, 1h is reacted; (4) reacted solution is carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; There is Tai-Ace S 150 to be known technology with the corresponding oxide that is separated and is converted into of ferric sulfate, be not repeated.Under this condition, in sewage, sulfuric acid concentration drops to less than 0.5%, and the rate of recovery of aluminium reaches 85.0%, and the rate of recovery of iron reaches 82.9%.
Example two, (1) raw material prepare: in flyash acidity extraction aluminum oxide technology sewage, aluminium ion concentration is at 0.21 mol/L, and sulfuric acid concentration is 11.4%; (2) get above-mentioned sewage 100mL, waste steel slag 10g, waste steel slag is joined in sewage, stir, join in reactor; (3) at temperature of reaction is 70 DEG C, 1.5 h are reacted; (4) reacted solution is carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; There is Tai-Ace S 150 to be known technology with the corresponding oxide that is separated and is converted into of ferric sulfate, be not repeated.Under this condition, in sewage, sulfuric acid concentration drops to less than 0.5%, and the rate of recovery of aluminium reaches 86.3%, and the rate of recovery of iron reaches 84.1%.
Example three, (1) raw material prepare: in flyash acidity extraction aluminum oxide technology sewage, aluminium ion concentration is at 0.27 mol/L, and sulfuric acid concentration is 16.3%; (2) get above-mentioned sewage 100mL, waste steel slag 15g, waste steel slag is joined in sewage, stir, join in reactor; (3) at temperature of reaction is 90 DEG C, 2.5 h are reacted; (4) reacted solution is carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; There is Tai-Ace S 150 to be known technology with the corresponding oxide that is separated and is converted into of ferric sulfate, be not repeated.Under this condition, in sewage, sulfuric acid concentration drops to less than 0.5%, and the rate of recovery of aluminium reaches 90.4%, and the rate of recovery of iron reaches 87.3%.
Example four, (1) raw material prepare: in flyash acidity extraction aluminum oxide technology sewage, aluminium ion concentration is at 0.27 mol/L, and sulfuric acid concentration is 6.8%; (2) get above-mentioned sewage 100mL, waste steel slag 15g, waste steel slag is joined in sewage, stir, join in reactor; (3) at temperature of reaction is 70 DEG C, 2h is reacted; (4) reacted solution is carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; There is Tai-Ace S 150 to be known technology with the corresponding oxide that is separated and is converted into of ferric sulfate, be not repeated.Under this condition, in sewage, sulfuric acid concentration drops to less than 0.5%, and the rate of recovery of aluminium reaches 89.1%, and the rate of recovery of iron reaches 84.2%.
Example five, (1) raw material prepare: in flyash acidity extraction aluminum oxide technology sewage, aluminium ion concentration is at 0.13 mol/L, and sulfuric acid concentration is 6.7%; Be doped in waste steel slag by the filter residue in example three, doping ratio is 5:1(waste steel slag: filter residue); (2) get above-mentioned sewage 100mL, the mixing slag 5g of waste steel slag and filter residue, joins in sewage by the mixing slag of waste steel slag and filter residue, stirs, join in reactor; (3) at temperature of reaction is 60 DEG C, 1 h is reacted; (4) reacted solution is carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; There is Tai-Ace S 150 to be known technology with the corresponding oxide that is separated and is converted into of ferric sulfate, be not repeated.Under this condition, in sewage, sulfuric acid concentration drops to less than 0.5%, and the rate of recovery of aluminium reaches 84.5%, and the rate of recovery of iron reaches 81.9%.
Example six, (1) raw material prepare: in flyash acidity extraction aluminum oxide technology sewage, aluminium ion concentration is at 0.13 mol/L, and sulfuric acid concentration is 6.7%; Be doped in waste steel slag by the filter residue in example three, doping ratio is 1:1(waste steel slag: filter residue); (2) get above-mentioned sewage 100mL, the mixing slag 5g of waste steel slag and filter residue, joins in sewage by the mixing slag of waste steel slag and filter residue, stirs, join in reactor; (3) at temperature of reaction is 60 DEG C, 1h is reacted; (4) reacted solution is carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; There is Tai-Ace S 150 to be known technology with the corresponding oxide that is separated and is converted into of ferric sulfate, be not repeated.Under this condition, in sewage, sulfuric acid concentration drops to less than 1%, and the rate of recovery of aluminium reaches 82.4%, and the rate of recovery of iron reaches 80.1%.
Claims (1)
1. a flyash acidity extraction aluminum oxide technology wastewater ocean disposal method, is characterized in that, the sewage utilizing the waste steel slag treated coal ash acidity extraction aluminum oxide of discharging in steelmaking process to produce, reclaims wherein aluminum oxide and ferric oxide, and consumption acids solution,
This wastewater ocean disposal method comprises the following steps:
Step one, be 20-5:1 with liquid-solid ratio, namely sewage and waste steel slag ratio take mL:g as benchmark, are joined by waste steel slag in sewage, stir, and join in reactor, and described reactor is with airway and gas extractor; In sewage, aluminium ion concentration is at 0.1-0.3 mol/L, and sulfuric acid concentration is 1-20%, for subsequent use;
Step 2, by material in reactor in step one under temperature of reaction is 50-100 DEG C of condition, the reaction times is 1-3, wherein the hydrogen that produces in reaction is carried out collection and is used for for whole reaction provides thermal source;
Step 3, solution reacted in step 2 carried out filter, associating removal of impurities, crystallization, obtain Tai-Ace S 150 and ferrum sulfuricum oxydatum solutum; Being separated Tai-Ace S 150 and ferric sulfate and being converted into corresponding oxide; Wherein, filter the filter residue obtained, be entrained in waste steel slag with waste steel slag according to 1: 1-10 ratio, carry out recycle.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105753026B (en) * | 2016-04-11 | 2018-05-04 | 北京世纪地和控股有限公司 | A kind of method for recycling aluminium oxide from flyash with sulfuric acid |
| CN106379947A (en) * | 2016-08-31 | 2017-02-08 | 江苏荣生电子有限公司 | Technology for extracting ferric sulfate in waste acid liquor from corrosion of electrode foils |
| CN109336147B (en) * | 2018-10-25 | 2021-01-12 | 昆明理工大学 | Method for producing alumina by using industrial solid waste rich in alumina |
| CN109835930A (en) * | 2019-02-19 | 2019-06-04 | 昆明理工大学 | A kind of production method of aluminium oxide |
| CN113332965B (en) * | 2021-07-12 | 2022-11-18 | 新疆大学 | Magnetic fly ash @ PDMS sponge material for oil-water separation and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672821A (en) * | 2005-04-08 | 2005-09-28 | 张彭成 | Compound treating method of waste industrial sulfuric acid and flyash |
| CN102101688A (en) * | 2010-12-23 | 2011-06-22 | 内蒙古昶泰资源循环再生利用科技开发有限责任公司 | Technological method for producing industrial aluminum sulfate by using coal ash and comprehensively utilizing coal ash |
| CN102241410A (en) * | 2010-05-14 | 2011-11-16 | 东北大学 | Ecological synthetic utilization method of fly ash |
| CN102502735A (en) * | 2011-11-03 | 2012-06-20 | 沈阳铝镁设计研究院有限公司 | Method for producing alumina by using pulverized fuel ash |
| CN102690010A (en) * | 2011-03-24 | 2012-09-26 | 镇江市丹徒区江南热镀锌有限公司 | Resource integrated utilization and treatment method of hydrochloric acid pickling waste liquid |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672821A (en) * | 2005-04-08 | 2005-09-28 | 张彭成 | Compound treating method of waste industrial sulfuric acid and flyash |
| CN102241410A (en) * | 2010-05-14 | 2011-11-16 | 东北大学 | Ecological synthetic utilization method of fly ash |
| CN102101688A (en) * | 2010-12-23 | 2011-06-22 | 内蒙古昶泰资源循环再生利用科技开发有限责任公司 | Technological method for producing industrial aluminum sulfate by using coal ash and comprehensively utilizing coal ash |
| CN102690010A (en) * | 2011-03-24 | 2012-09-26 | 镇江市丹徒区江南热镀锌有限公司 | Resource integrated utilization and treatment method of hydrochloric acid pickling waste liquid |
| CN102502735A (en) * | 2011-11-03 | 2012-06-20 | 沈阳铝镁设计研究院有限公司 | Method for producing alumina by using pulverized fuel ash |
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