CN107555447A - A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust - Google Patents
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust Download PDFInfo
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- CN107555447A CN107555447A CN201710678051.3A CN201710678051A CN107555447A CN 107555447 A CN107555447 A CN 107555447A CN 201710678051 A CN201710678051 A CN 201710678051A CN 107555447 A CN107555447 A CN 107555447A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust, it is related to a kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust caused by aluminium ash processing procedure.It is characterized in that its process is to add water to be modulated into slurry Quadratic aluminum dust caused by aluminium ash processing procedure, deamination reaction is stirred, the ammonia for reacting generation is absorbed by condensation or water；Reacted slurry carries out solid-liquor separation, and the liquid phase evaporative crystallization of separation obtains chlorate and fluorination salt mixture；The solid phase of separation is used to produce calcium aluminate material.The method of the present invention, can harmless treatment aluminium ash, efficiently reclaim the useful component in aluminium ash, the alternative alumine of innoxious Quadratic aluminum dust is used to prepare aluminic acid calcium product, greatly reduces production cost, and it is simple to reach the purpose technique that aluminium grey " zero-emission " utilizes, it is easy to operate, cost is low, environment friendly and pollution-free, has broad applicability.
Description
Technical field
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust, be related to Quadratic aluminum dust caused by a kind of aluminium ash processing procedure without
The method of evilization comprehensive utilization.
Background technology
Aluminium ash be swum in electrolytic aluminium, the production of casting aluminium and aluminium scrap regenerative process aluminium melt surface not molten field trash,
Additive and with additive occur physics, chemical reaction caused by material.《National Hazard waste register》（2016 editions）By aluminium
Caused just furnace slag during pyrometallurgical smelting, during electrolytic aluminium during caused salt slag, scum silica frost and aluminium pyrometallurgical smelting
Caused inflammability skimming is defined as hazardous waste.
Aluminium ash is a kind of renewable resource, wherein containing 10%~80% aluminium, it is domestic that aluminium ash recovery metallic aluminium is substantially divided
Two methods：Cold treatment absorption method and heat treatment absorption method.Recycled both at home and abroad on aluminium ash and carried out numerous studies application
Work, such as aluminium ash recovery metallic aluminium, the useful salinity of recovery, recovery aluminum oxide, production cement, synthesized polymer aluminium chloride, production palm fibre
Corundum, prepare refractory material, prepare anode protection ring, as desulfurizing agent etc..
At present, aluminium ash recovery metallic aluminium technique and technology relative maturity, Quadratic aluminum dust aluminum content is general after reclaiming metallic aluminium
Below 5%.The main component of the recovered Quadratic aluminum dust for crossing metallic aluminium is Al2O3And AlN, also containing a certain amount of NaCl,
The salts substances such as KCl, fluoride, other metal oxides（Such as SiO2、Fe2O3）And some other compositions.Because aluminium ash reclaims
Metallic aluminium technology maturation, the rate of recovery is high, and almost every electrolytic aluminium and aluminium processing enterprise can all go up aluminium ash recovery metallic aluminium technique, but
Resulting a large amount of Quadratic aluminum dusts are difficult to effectively utilize, and influence the sustainable development of enterprise.
At present, the technology on aluminium ash comprehensive utilization, there are many patented technologies the country.Chinese patent（CN105018739A）
Disclose and aluminum oxide and villaumite, the method for villiaumite, Chinese patent are reclaimed in a kind of ash from aluminium（CN103555955B）Disclose one
The resource utilization method of kind aluminium ash, these methods make recovery metallic aluminium and the Quadratic aluminum dust of removal of impurities finally return that electrolytic cell, by
The aluminium overwhelming majority in aluminium ash is the intact α-Al of lattice2O3, its activity is very poor, and electrolytic process needs to consume very big energy,
So as to cause tank voltage to increase, energy consumption increase, the problems such as electrolytic cell service life shortens.
Chinese patent（CN103274436B）Disclose the method using aluminium ash low temperature smelting production Brown Alundum, Chinese patent
（CN101172635A）The method using aluminium scrap ash production calcium aluminate is disclosed, these methods are to substitute bauxite money using aluminium ash
Source prepares alumina-bearing material, but the hazardous substances such as the nitrogen in aluminium ash and villaumite are not effectively treated and reclaimed.
Chinese patent（CN104261445B）A kind of harmless treatment aluminium ash and the method for preparing sandy alumina are disclosed,
Chinese patent（CN105271327A）Disclose a kind of aluminium ash harmless treatment and the method recycled, Chinese patent
（CN105347361A）A kind of method of aluminium ash comprehensive utilization processing is disclosed, these methods are that the aluminium ash for reclaiming metallic aluminium is entered
Row harmless treatment, then using the aluminum oxide in alkaline sintering method Aluminum ash, there is flow complexity, production cost in these techniques
The problems such as high.
The content of the invention
The purpose of the present invention is aiming at insufficient existing for above-mentioned prior art, there is provided a kind of energy effective recycling is secondary
Useful component in aluminium ash, technique is simple, and cost is low, the method for the free of contamination innoxious comprehensive utilization of Quadratic aluminum dust.
The purpose of the present invention is achieved through the following technical solutions.
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust, it is characterised in that its process is to produce aluminium ash processing procedure
Quadratic aluminum dust add water to be modulated into slurry, be stirred deamination reaction, react generation ammonia pass through condensation or water absorb；Reaction
Slurry afterwards carries out solid-liquor separation, and the liquid phase evaporative crystallization of separation obtains chlorate and fluorination salt mixture；The solid phase of separation is used
In production calcium aluminate material, the including but not limited to material such as preliminary melting type calcium aluminate refining agent and aluminate cement.
The method of the innoxious comprehensive utilization of a kind of Quadratic aluminum dust of the present invention, it is characterised in that its aluminium ash processing procedure produces
Quadratic aluminum dust when adding the water to be modulated into slurry, its slurry solvent and solute weight ratio is 1:1~10:1.
The method of the innoxious comprehensive utilization of a kind of Quadratic aluminum dust of the present invention, it is characterised in that it carries out the temperature of deamination reaction
Spend for 20 DEG C ~ 130 DEG C, the reaction time is 1h ~ 10h.
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust of the present invention, it is characterised in that the liquid phase that its solid-liquor separation goes out
Evaporating temperature is 100 DEG C ~ 200 DEG C.
The method of the innoxious comprehensive utilization of a kind of Quadratic aluminum dust of the present invention, it is characterised in that its solid phase separated is used to give birth to
Produce calcium aluminate material process, be by the solid phase of separation is scrubbed, dehydration, after drying, adding calcium Kiev material, to carry out high-temperature fusion anti-
Ying Hou, then through cooling down, crushing and screen（Or grinding）Handle to obtain the material such as preliminary melting type calcium aluminate refining agent or aluminate cement..
The method of the innoxious comprehensive utilization of a kind of Quadratic aluminum dust of the present invention, it is characterised in that its solid phase separated is used to give birth to
It is that the weight proportion ratio that the solid phase of separation is added to calcium Kiev material is during producing calcium aluminate material:1:0.3~1:3.
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust of the present invention, it is characterised in that its high-temperature fusion reaction temperature
For 1300 DEG C ~ 1600 DEG C, the reaction time is 0.5h ~ 4h.
The present invention a kind of innoxious comprehensive utilization of Quadratic aluminum dust method, it is characterised in that its calcium Kiev material be for
CaO is the material of main component, including is not limited to the high material of the CaO contents such as lime stone, lime, carbide slag.
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust of the present invention, the innoxious place of Quadratic aluminum dust can be realized
Reason, and the useful component in Quadratic aluminum dust is efficiently reclaimed, for nitride resolution ratio more than 92%, the ammoniacal liquor of recovery reaches market
Sell rank；More than 87%, the villaumite and villiaumite crystalline mixture of recovery can be used as casting flux for villaumite and the villiaumite rate of recovery；
The alternative alumine of innoxious Quadratic aluminum dust is used to prepare the calcium aluminates such as preliminary melting type calcium aluminate refining agent and aluminate cement
Product, production cost is greatly reduced, reach the purpose that aluminium grey " zero-emission " utilizes.
The present invention a kind of innoxious comprehensive utilization of Quadratic aluminum dust method, can harmless treatment aluminium ash, efficiently return
The useful component in aluminium ash to be received, substantially reduces the production cost for preparing aluminic acid calcium product, technique is simple, easy to operate, and cost is low,
It is environment friendly and pollution-free, there is broad applicability.
Brief description of the drawings
The process chart of Fig. 1 the inventive method.
Embodiment
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust, to be carried out using conventional method caused by aluminium ash processing procedure
Quadratic aluminum dust is raw material, adds water to be configured to slurry, and deamination reaction, the ammonia of reaction are stirred in the deamination reaction device of sealing
Gas absorbs to obtain ammoniacal liquor by condensation or water, and reacted slurry carries out solid-liquor separation, and the liquid phase evaporative crystallization of solid-liquor separation obtains
To chlorate and fluorination salt mixture；The denitrogenation aluminium ash solid phase washing of separation, it is dehydrated, expects by weight proportion with calcium Kiev after drying
Mix, frit reaction is carried out at high temperature, through cooling down, crushing and screen after having reacted（Or grinding）Handle to obtain pre-melted type aluminium
The materials such as sour calcium refining agent or aluminate cement.
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust of the present invention, the slurry liquid of described Quadratic aluminum dust configuration are consolidated
Than for 1:1~10:1；Described deamination reaction temperature is 20 DEG C ~ 130 DEG C, and the reaction time is 1h ~ 10h；Described solid-liquor separation
The temperature of liquid phase evaporative crystallization is 100 DEG C ~ 200 DEG C；Described denitrogenation aluminium ash expects that ratio by weight ratio is with calcium Kiev：1:
0.3~1:3；Described denitrogenation aluminium ash is 1300 DEG C ~ 1600 DEG C with calcium Kiev material high-temperature fusion reaction temperature, and the reaction time is
0.5h~4h。
A kind of method of the innoxious comprehensive utilization of Quadratic aluminum dust of the present invention, described calcium Kiev material are using CaO to be main
The material of composition, including it is not limited to the high material of the CaO contents such as lime stone, lime, carbide slag.
Technical scheme is described in detail below by specific embodiment.Described embodiment is only
The part of the embodiment of the present invention, based on any conversion made of the present invention, belong to protection scope of the present invention.
Embodiment 1
Using Quadratic aluminum dust caused by grey sieve method processing aluminium ash recovery metallic aluminium is fried, by liquid-solid ratio 1:1 is configured to slurry, close
It is stirred deamination reaction in the deamination reaction device of envelope, 120 DEG C, reaction time 1h of reaction temperature, the ammonia of reaction passes through cold
Solidifying recovery ammoniacal liquor, reacted slurry carry out solid-liquor separation, and evaporative crystallization obtains chlorate to liquid phase at 150 DEG C and fluoride salt mixes
Compound；Separation denitrogenation aluminium ash solid phase washing, dehydration, drying after with calcium oxide powder（CaO content is 96%）, by weight proportion 1:
0.3 dispensing is mixed, and frit reaction 4h is carried out at 1300 DEG C of high temperature, through cooling down, crushing and grinding handles to obtain aluminium after having reacted
Acid salt cement.
The nitride resolution ratio of the present embodiment Quadratic aluminum dust is 93.20%, villaumite and the villiaumite rate of recovery 87.80%, preparation
Aluminate cement main component is：Al2O3:60.54%, CaO:23.92%, SiO2:4.93%, MgO:3.20%, Fe2O3:0.44%,
Other.
Embodiment 2
Using Quadratic aluminum dust caused by kiln process processing aluminium ash recovery metallic aluminium, by liquid-solid ratio 4:1 is configured to slurry, is sealing
Deamination reaction device in be stirred deamination reaction, 20 DEG C of reaction temperature, reaction time 10h, the ammonia of reaction is absorbed with water
Ammoniacal liquor, reacted slurry carry out solid-liquor separation, and liquid phase evaporative crystallization at 120 DEG C obtains chlorate and fluorination salt mixture；
Separation denitrogenation aluminium ash solid phase washing, dehydration, drying after with lime stone（CaO content is 54%）, by weight proportion 1:3 dispensings are mixed
Close, frit reaction 3h is carried out at 1400 DEG C of high temperature, through cooling down, crushing and Screening Treatment obtains preliminary melting type calcium aluminate after having reacted
Refining agent.
The nitride resolution ratio of the present embodiment Quadratic aluminum dust is 92.80%, villaumite and the villiaumite rate of recovery 87.60%, preparation
Preliminary melting type calcium aluminate refining agent main component is：Al2O3:28.05%, CaO:60.97%, SiO2:2.81%, MgO:1.52%,
Fe2O3:0.19%, other.
Embodiment 3
Using Quadratic aluminum dust caused by squeezing cooling method processing aluminium ash recovery metallic aluminium, by liquid-solid ratio 6:1 is configured to slurry, close
It is stirred deamination reaction in the deamination reaction device of envelope, 90 DEG C, reaction time 6h of reaction temperature, the ammonia steam of reaction passes through cold
Solidifying recovery ammoniacal liquor, reacted slurry carry out solid-liquor separation, and evaporative crystallization obtains chlorate to liquid phase at 100 DEG C and fluoride salt mixes
Compound；Separation denitrogenation aluminium ash solid phase washing, dehydration, drying after with carbide slag（CaO content is 62%）, by weight proportion 1:1.4
Dispensing is mixed, and frit reaction 2h is carried out at 1500 DEG C of high temperature, through cooling down, crushing and Screening Treatment obtains pre-melted type after having reacted
Calcium aluminate refining agent.
The nitride resolution ratio of the present embodiment Quadratic aluminum dust is 95.60%, villaumite and the villiaumite rate of recovery 88.90%, preparation
Preliminary melting type calcium aluminate refining agent main component is：Al2O3:38.62%, CaO:44.83%, SiO2:3.78%, MgO:2.10%,
Fe2O3:0.23%, other.
Embodiment 4
Using Quadratic aluminum dust caused by sieve method processing aluminium ash recovery metallic aluminium is ground, by liquid-solid ratio 10:1 is configured to slurry,
Deamination reaction is stirred in the deamination reaction device of sealing, 130 DEG C, reaction time 3h of reaction temperature, the ammonia steam of reaction leads to
Condensation recovery ammoniacal liquor is crossed, reacted slurry carries out solid-liquor separation, and liquid phase evaporative crystallization at 200 DEG C obtains chlorate and fluorination
Salt mixture；Separation denitrogenation aluminium ash solid phase washing, dehydration, drying after with quick lime（CaO content is 92%）, by weight proportion
1:0.5 dispensing is mixed, and frit reaction 0.5h is carried out at 1600 DEG C of high temperature, through cooling down, crushing and grinding is handled after having reacted
To aluminate cement.
The nitride resolution ratio of the present embodiment Quadratic aluminum dust is 96.50%, villaumite and the villiaumite rate of recovery 89.60%, preparation
Aluminate cement main component is：Al2O3:53.51%, CaO:33.20 %, SiO2:5.52%, MgO:2.75%, Fe2O3:0.36%,
Other.
Claims (9)
- A kind of 1. method of the innoxious comprehensive utilization of Quadratic aluminum dust, it is characterised in that its process is by caused by aluminium ash processing procedure Quadratic aluminum dust adds water to be modulated into slurry, is stirred deamination reaction, and the ammonia for reacting generation is absorbed by condensation or water；After reaction Slurry carry out solid-liquor separation, the liquid phase evaporative crystallization of separation obtains chlorate and fluorination salt mixture；The solid phase of separation is used for Produce calcium aluminate material.
- 2. the method for the innoxious comprehensive utilization of a kind of Quadratic aluminum dust according to claim 1, it is characterised in that at its aluminium ash When Quadratic aluminum dust caused by reason process adds the water to be modulated into slurry, its slurry solvent and solute weight ratio is 1:1~10:1.
- 3. the method for the innoxious comprehensive utilization of a kind of Quadratic aluminum dust according to claim 1, it is characterised in that it is taken off The temperature of ammonia reaction is 20 DEG C ~ 130 DEG C, and the reaction time is 1h ~ 10h.
- 4. the method for the innoxious comprehensive utilization of a kind of Quadratic aluminum dust according to claim 1, it is characterised in that its liquid divides admittedly The liquid phase evaporating temperature separated out is 100 DEG C ~ 200 DEG C.
- 5. the method for the innoxious comprehensive utilization of a kind of Quadratic aluminum dust according to claim 1, it is characterised in that what it was separated Solid phase is used to produce calcium aluminate material process, is by the solid phase of separation is scrubbed, dehydration, after drying, adds calcium Kiev material and carries out After high-temperature fusion reaction, then through cooling down, crushing and screen or grinding handles to obtain calcium aluminate material.
- 6. the method for the innoxious comprehensive utilization of a kind of Quadratic aluminum dust according to claim 1, it is characterised in that what it was separated Solid phase is used to produce calcium aluminate material process, is that the weight proportion ratio that the solid phase of separation is added to calcium Kiev material is:1:0.3~ 1:3。
- A kind of 7. method of the innoxious comprehensive utilization of Quadratic aluminum dust according to claim 1, it is characterised in that its high temperature melting Melt reaction temperature as 1300 DEG C ~ 1600 DEG C, the reaction time is 0.5h ~ 4h.
- A kind of 8. method of the innoxious comprehensive utilization of Quadratic aluminum dust according to claim 1, it is characterised in that its calcium Kiev Expect for the material using CaO as main component, include the high material of CaO content of lime stone, lime, carbide slag.
- 9. the method for the innoxious comprehensive utilization of a kind of Quadratic aluminum dust according to claim 1, it is characterised in that what it was separated The calcium aluminate material that solid phase is used to produce is preliminary melting type calcium aluminate refining agent, aluminate cement.
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| CN108217688A (en) * | 2018-01-25 | 2018-06-29 | 中国科学院过程工程研究所 | A kind of depth hydrolysis method of aluminum nitride in aluminum ash |
| CN108315765A (en) * | 2018-04-22 | 2018-07-24 | 新疆大学 | It is a kind of to prepare aluminium electrolysis anode antioxidizing paint using aluminium lime-ash |
| CN108585564A (en) * | 2018-07-16 | 2018-09-28 | 长沙中硅水泥技术开发有限公司 | The system and method for cement kiln synergic processing waste slag of electrolytic aluminium coproduction double-quick cement |
| CN109092863A (en) * | 2018-09-13 | 2018-12-28 | 河南博鑫高科实业有限公司 | Quadratic aluminum dust resource utilization utilizes the device and technique for producing refining slag |
| CN109179464A (en) * | 2018-09-05 | 2019-01-11 | 中国铝业股份有限公司 | A kind of method of Quadratic aluminum dust high-efficiency cleaning resource utilization |
| CN109647853A (en) * | 2018-12-20 | 2019-04-19 | 郑州鸿跃环保科技有限公司 | A kind of aluminium ash harmless resource utilization total system and its processing method |
| CN109678180A (en) * | 2019-02-14 | 2019-04-26 | 平罗县中兴碳素有限公司 | A kind of method of mixed type Quadratic aluminum dust comprehensive reutilization |
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| CN110040755A (en) * | 2019-05-17 | 2019-07-23 | 中国科学院过程工程研究所 | A method of aluminium polychloride coproduction calcirm-fluoride is prepared using aluminium ash |
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| CN111167830A (en) * | 2019-12-30 | 2020-05-19 | 兴化市永泰铝业有限公司 | Comprehensive treatment and utilization process of secondary aluminum ash |
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Application publication date: 20180109 |