CN105819477B - A kind of high-strength coal gangue haydite prepares AL2O3Method - Google Patents
A kind of high-strength coal gangue haydite prepares AL2O3Method Download PDFInfo
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- CN105819477B CN105819477B CN201610337245.2A CN201610337245A CN105819477B CN 105819477 B CN105819477 B CN 105819477B CN 201610337245 A CN201610337245 A CN 201610337245A CN 105819477 B CN105819477 B CN 105819477B
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- Prior art keywords
- haydite
- gangue
- coal gangue
- strength coal
- preheating
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
- C01F7/26—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with sulfuric acids or sulfates
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention provides a kind of high-strength coal gangue haydite and prepares AL2O3Method, follow the steps below (1）Common gangue is first fabricated to high-strength coal gangue haydite,（2）AL is extracted in high-strength coal gangue haydite2O3；Compared with prior art, the present invention has following beneficial effect：Gangue is raw material, and its coal content is extremely low, and intensity is relatively low, and general way, which is difficult to make full use of, to be used, and is preparing AL2O3During, this kind of raw mineral materials and Qi Nei carbonaceous components are made full use of, AL is effectively reduced2O3Unit weight, save energy consumption, reduction pollution.
Description
Technical field
The present invention is that a kind of high-strength coal gangue haydite prepares Al2O3Method, belong to Al2O3Preparation method.
Background technology
Gangue is the solid waste discharged during coal mining process and coal washing, be one kind in coalification course with coal seam
A kind of low, harder than the coal black gray expandable rock of phosphorus content of association, its main component silica, aluminum oxide also contain quantity
Can not iron oxide, calcium oxide, magnesia, sodium oxide molybdena, potassium oxide.With continuing to develop for coal production, China's gangue
Yield is growing day by day, and substantial amounts of coal gangue waste is stacked everywhere, and substantial amounts of soil is not only taken up, and serious dirt is caused to environment
Dye, and be also a kind of wasting of resources.Gangue processing and recycling are carried out, is turned waste into wealth, work is produced using gangue
Industry and civil buildings light-weight aggregate haydite, are not only that society reduces environmental pollution creation social benefit, can also create one for enterprise
Fixed economic benefit.
The content of the invention
In view of the deficienciess of the prior art, preparing Al it is an object of the present invention to provide a kind of high-strength coal gangue haydite2O3Side
Method, to solve the problems mentioned in the above background technology, the present invention are easy to use, are easy to operation, and stability is good, and reliability is high.
To achieve these goals, the present invention is to realize by the following technical solutions：A kind of high-strength coal gangue haydite
Prepare Al2O3Method, follow the steps below
（1）Common gangue is first fabricated to high-strength coal gangue haydite；
（2）Al is extracted in high-strength coal gangue haydite2O3。
Further, in step（1）The middle high-strength coal gangue haydite of raw material is made up of the weight ratio of following components
Gangue：70-80%
Phyllite：20-30%
Foaming agent：1-2%
Auxiliary agent：0.5-1%.
Further, foaming agent is made up of the one or more in carbonate, waterglass, carborundum and carbon black, and auxiliary agent is
Nano silicon or nano-calcium carbonate.
Further, gangue 76%；Phyllite 21%；Foaming agent 2%；Auxiliary agent 1%.
Further, gangue and phyllite are crossed into 100 mesh standard sieves after jaw crushing crusher machine, ball mill ball milling,
Then it is standby after being dried at 105 DEG C, then in gangue and phyllite, then foaming agent and auxiliary agent are separately added into, then mixed
It is even, add water, during this, gangue and phyllite must be sufficiently mixed uniformly, if uneven, the haydite burnt till can go out
Existing shell became uneven, the phenomenon of internal porosity skewness, then using manually chopping the chop, the diameter of ball is in 10~15mm
Between, after balling-up, drying box is put into, 105 DEG C of 1~2h of drying is warming up to, is then fitted into by sample number in sample cylinder and waits to burn, haydite is burnt in examination
The preheating and roasting of sample are carried out in preheating furnace and roaster, 500 DEG C of preheating temperature, preheating time 11min, sintering temperature 1100
DEG C, roasting time 10min was reached after preheating time, took out the roasting for being put into and having reached design sintering temperature from preheating furnace immediately
Kiln roasting is burnt, that is, high-strength coal gangue haydite is made.
Further, by step（1）Afterwards, after high-strength coal gangue haydite is crushed, and through ball mill ball milling, Ran Hou
5h is calcined in 800 DEG C of high temperature furnaces, l is used:2 sulfuric acid are leached by 1.5 gallic acid amounts, and control temperature leaches 5h at 85 DEG C or so, and energetically
It is sufficiently stirred for can reach Al dissolution rates 89.6%, leaching liquid is filtered, take Partial filtration mother liquor to add alkali, control ph is 7 left
The right side, generation Al (OH)3Precipitation, the aluminium hydroxide being filtrated to get adds another part mother liquor, neutralizes the sulfuric acid not reacted completely, adjusts
It is 1.0~2.0 to save pH value, and evaporation mother liquor to density is 1.25~1.30, cools down spontaneous nucleation.
Beneficial effects of the present invention：A kind of high-strength coal gangue haydite of the present invention prepares Al2O3Method, gangue for original
Material, its coal content is extremely low, and intensity is relatively low, and general way, which is difficult to make full use of, to be used, and is preparing Al2O3During, make full use of this
Class raw mineral materials and Qi Nei carbonaceous components, effectively reduce Al2O3Unit weight, save energy consumption, reduction pollution.
Embodiment
To be easy to understand the technical means, the inventive features, the objects and the advantages of the present invention, with reference to
Embodiment, is expanded on further the present invention.
The present invention provides a kind of technical scheme：A kind of high-strength coal gangue haydite prepares Al2O3Method, according to following steps
Carry out
（1）Common gangue is first fabricated to high-strength coal gangue haydite；
（2）Al is extracted in high-strength coal gangue haydite2O3。
In step（1）The middle high-strength coal gangue haydite of raw material is made up of the weight ratio of following components
Gangue：70-80%
Phyllite：20-30%
Foaming agent：1-2%
Auxiliary agent：0.5-1%.
Foaming agent is made up of the one or more in carbonate, waterglass, carborundum and carbon black, and auxiliary agent is nanometer titanium dioxide
Silicon or nano-calcium carbonate.
Gangue 76%；Phyllite 21%；Foaming agent 2%；Auxiliary agent 1%.
Gangue and phyllite are crossed into 100 mesh standard sieves after jaw crushing crusher machine, ball mill ball milling, then 105
It is standby after being dried at DEG C, then in gangue and phyllite, then foaming agent and auxiliary agent are separately added into, then mix, add water, this
During individual, gangue and phyllite must be sufficiently mixed uniformly, if uneven, shell thickness occurs in the haydite burnt till
Inequality, the phenomenon of internal porosity skewness, then using manually chopping the chop, the diameter of ball is between 10~15mm, balling-up
Afterwards, drying box is put into, 105 DEG C of 1~2h of drying is warming up to, is then fitted into by sample number in sample cylinder and waits to burn, the preheating of haydite sample is burnt in examination
Carried out with roasting in preheating furnace and roaster, 500 DEG C of preheating temperature, preheating time 11min, 1100 DEG C of sintering temperature, roasting
Time 10min, reached after preheating time, is taken out from preheating furnace be put into roasting in the roaster for having reached design sintering temperature immediately
Burn, that is, high-strength coal gangue haydite is made.
By step（1）Afterwards, after high-strength coal gangue haydite is crushed, and through ball mill ball milling, then in 800 DEG C of high temperature furnaces
Middle calcining 5h, uses l:2 sulfuric acid are leached by 1.5 gallic acid amounts, and control temperature leaches 5h at 85 DEG C or so, and is sufficiently stirred for energetically
Al dissolution rates 89.6% are reached, leaching liquid is filtered, take Partial filtration mother liquor to add alkali, control ph is 7 or so, generates Al
(OH)3Precipitation.The aluminium hydroxide being filtrated to get adds another part mother liquor, neutralizes the sulfuric acid not reacted completely, and regulation pH value is
1.0~2.0, evaporation mother liquor to density is 1.25~1.30, cools down spontaneous nucleation.
Preparing Al2O3During, gangue raw mineral materials and Qi Nei carbonaceous components are made full use of, Al is effectively reduced2O3
Unit weight, save energy consumption, reduction pollution.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above, for this area skill
For art personnel, it is clear that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing substantially from the present invention spirit or
In the case of essential characteristic, the present invention can be realized in other specific forms.Therefore, all should be by no matter from the point of view of which point
Embodiment regards exemplary as, and be it is nonrestrictive, the scope of the present invention by appended claims rather than on state
It is bright to limit, it is intended that all changes fallen in the implication and scope of the equivalency of claim are included in the present invention
It is interior.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (2)
1. a kind of high-strength coal gangue haydite prepares Al2O3Method, it is characterised in that：Follow the steps below,
（1）Common gangue is first fabricated to high-strength coal gangue haydite, high-strength coal gangue haydite by following components weight ratio
Composition：Gangue 76%, phyllite 21%, foaming agent 2%, auxiliary agent 1%；
Gangue and phyllite are crossed into 100 mesh standard sieves after jaw crushing crusher machine, ball mill ball milling, then at 105 DEG C
It is standby after drying, then in gangue and phyllite, then foaming agent and auxiliary agent are separately added into, then mix, add water, this mistake
Cheng Zhong, gangue and phyllite must be sufficiently mixed uniformly, if uneven, shell thickness occurs not in the haydite burnt till
, the phenomenon of internal porosity skewness, then using manually chopping the chop, the diameter of ball is between 10~15mm, after balling-up,
Drying box is put into, 105 DEG C of 1~2h of drying is warming up to, is then fitted into by sample number in sample cylinder and waits to burn, the preheating and roasting of haydite sample are burnt in examination
Burn and carried out in preheating furnace and roaster, 500 DEG C of preheating temperature, preheating time 11min, 1100 DEG C of sintering temperature, roasting time
10min, reached after preheating time, took out the roasting kiln roasting for being put into and having reached design sintering temperature from preheating furnace immediately,
High-strength coal gangue haydite is made, the auxiliary agent is nano silicon or nano-calcium carbonate；
（2）Al is extracted in high-strength coal gangue haydite2O3, after high-strength coal gangue haydite is crushed, and through ball mill ball milling, Ran Hou
5h is calcined in 800 DEG C of high temperature furnaces, l is used:2 sulfuric acid are leached by 1.5 gallic acid amounts, and control temperature leaches 5h at 85 DEG C, and abundant energetically
Stirring can reach Al dissolution rates 89.6%, and leaching liquid is filtered, and take Partial filtration mother liquor to add alkali, control ph is 7, generation
Al(OH)3Precipitation, the aluminium hydroxide being filtrated to get adds another part mother liquor, neutralizes the sulfuric acid not reacted completely, adjusts pH value
For 1.0~2.0, evaporation mother liquor to density is 1.25~1.30, cools down spontaneous nucleation.
2. a kind of high-strength coal gangue haydite according to claim 1 prepares Al2O3Method, it is characterised in that：Foaming agent by
One or more compositions in carbonate, waterglass, carborundum and carbon black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610337245.2A CN105819477B (en) | 2016-05-21 | 2016-05-21 | A kind of high-strength coal gangue haydite prepares AL2O3Method |
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|---|---|---|---|
| CN201610337245.2A CN105819477B (en) | 2016-05-21 | 2016-05-21 | A kind of high-strength coal gangue haydite prepares AL2O3Method |
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| CN105819477A CN105819477A (en) | 2016-08-03 |
| CN105819477B true CN105819477B (en) | 2017-10-10 |
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| CN109928652A (en) * | 2019-04-19 | 2019-06-25 | 四川省劲腾环保建材有限公司 | A method of it prepares and controls sulfide and sulfate in extruding dregs porcelain granule |
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| CN101209849A (en) * | 2007-12-22 | 2008-07-02 | 河南理工大学 | Novel technique for extracting aluminum oxide from coal gangue |
| CN101450811A (en) * | 2008-10-23 | 2009-06-10 | 长春市超威新材料科技有限公司 | Method for extracting alumina from coal gangue |
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Effective date of registration: 20191227 Address after: 471800 Wanshan Lake Industrial Park, Xin'an County, Luoyang City, Henan Province Patentee after: Luoyang Longchang refractory material Co., Ltd. Address before: 5, B District, 528467 / F, building 4, Qianjin two road, Tanzhou Town, Guangdong, Zhongshan, China A Patentee before: ZHONGSHAN LYULANG ADDITIVES CO., LTD. |
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Granted publication date: 20171010 Termination date: 20200521 |
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