CN106478015A - A kind of pelletizing process of germanic flyash - Google Patents
A kind of pelletizing process of germanic flyash Download PDFInfo
- Publication number
- CN106478015A CN106478015A CN201610854386.1A CN201610854386A CN106478015A CN 106478015 A CN106478015 A CN 106478015A CN 201610854386 A CN201610854386 A CN 201610854386A CN 106478015 A CN106478015 A CN 106478015A
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- CN
- China
- Prior art keywords
- germanic
- germanium
- flyash
- mass content
- dustball
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of pelletizing process of germanic flyash, comprise the steps：Germanic flyash, cement and pulverized limestone are mixed, to obtain initial powder；It is mixed into water in initial powder, so that the moisture in initial powder reaches the first mass content, to obtain compound；By compound pelletizing, to obtain germanium dustball, and add water in balling process, so that the moisture in germanium dustball reaches the second mass content；Germanium dustball is spontaneously dried, to obtain the germanium dustball of drying.The germanium dustball that the pelletizing process of a kind of germanic flyash according to the present invention is obtained has some strength, solve charging rate in commercial production to be taken away by high temperature gas flow or dedusting fan and cause the problems such as production environment is poor, loss of material is serious with germanium dirt slowly, and the enrichment of germanium produces positive role, advantageously in the enrichment of germanium in the germanic flyash to the later stage.
Description
Technical field
The present invention relates to a kind of pelletizing process of germanic flyash.
Background technology
The huge lignite resource of Xilinguole Beit reserves, germanium resource is together with brown coal association.Brown coal are by levigate dry
Dry after add cyclone furnaces burning, in heat supply, power generation process, the coal dust with certain fineness when coal-powder boiler high temperature is burnt, by
Flue gas take out of and through dust-precipitator collect flyash in contain a certain amount of germanium, be enriched with by later stage high temperature secondary, to brown coal
Germanic flyash after burning is enriched with further, can improve the germanium grade of wet treatment raw material, and then obtains HpGe.But contain
Its proportion of germanium flyash is lighter, is directly added into germanic flyash when later stage high temperature secondary is enriched with and charging rate can be led to slow,
Can be taken away by high temperature gas flow or dedusting fan, thus reducing the concentration effect of germanic flyash.So it is fine and close in order to improve charging
Degree and minimizing blow loss, are also beneficial to feeding operation, it is to avoid airborne dust, need to carry out pelletizing to germanic flyash.There is research to fine coal
Ash carries out pelletizing, mainly passes through to add clay and floccule, and carries out pelletizing by high-temperature roasting, the method can cause the big of germanium
Amount is lost and is unfavorable for enrichment and the extraction of later stage germanium.
Content of the invention
It is an object of the present invention to proposing a kind of simple to operate, charging consistency can be improved and reduce containing of blow loss
The pelletizing process of germanium flyash.
The pelletizing process of a kind of germanic flyash according to embodiments of the present invention, comprises the steps：S101：By germanic powder
Coal ash, cement and pulverized limestone mixing, to obtain initial powder；S102：It is mixed into water in initial powder, so that in initial powder
Moisture reaches the first mass content, to obtain compound；S103：By compound pelletizing, to obtain germanium dustball, and in pelletizing
During add water so that germanium dustball in moisture reach the second mass content；S104：Germanium dustball is spontaneously dried, with
Obtain the germanium dustball of drying.
The pelletizing process of a kind of germanic flyash according to the present invention, carries out pelletizing after the abundant moistening that adds water, and
Dried is so that germanium dustball has some strength in its natural state, solves that charging rate in commercial production is slow and germanium dirt
Taken away by high temperature gas flow or dedusting fan and cause the problems such as production environment is poor, loss of material is serious, and the germanic flyash to the later stage
The enrichment of middle germanium produces positive role, advantageously in the enrichment of germanium.
In addition, a kind of pelletizing process of germanic flyash according to the above embodiment of the present invention can also have adding as follows
Technical characteristic：
Further, through being once enriched with the flyash obtaining after germanic flyash burns for brown coal；The matter of CaO in pulverized limestone
Amount content accounts for more than the 85% of the quality of pulverized limestone.
Further, in initial powder, the mass content of germanic flyash is 65%～70%, the mass content of cement
For 1%～5%, the mass content of pulverized limestone is 25%～40%.
Further, in initial powder, the mass content of germanic flyash is 67%, and the mass content of cement is 3%,
The mass content of pulverized limestone is 30%.
Further, in step s 102, the first mass content is 10%～20%.
Further, in step s 102, the first mass content is 15%.
Further, in step s 103, the second mass content is 35%～45%.
Further, in step s 103, the second mass content is 40%.
Further, in step s 103, a diameter of 5mm～20mm of germanium dustball.
Further, in step s 103, a diameter of 10mm of germanium dustball.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
Fig. 1 is the flow chart of the pelletizing process of a kind of germanic flyash according to the present invention.
Specific embodiment
Embodiments of the invention are described below in detail.Embodiment below with reference to Description of Drawings is exemplary, purport
For explaining the present invention, and it is not considered as limiting the invention.
As shown in figure 1, the pelletizing process of a kind of germanic flyash according to the present invention, comprise the steps：
S101：Germanic flyash, cement and pulverized limestone are mixed, to obtain initial powder.In detail, germanic flyash is
Through being once enriched with the flyash obtaining after brown coal burning, wherein, the mass content of germanium accounts for less than the 1% of flyash quality, Calx
In powder, the mass content of CaO accounts for more than the 85% of the quality of pulverized limestone, and cement is Portland cement.Preferably, initial
In powder, the mass content of germanic flyash is about 65%～70%, and the mass content of cement is about 1%～5%, Calx
The mass content of powder is about 25%～40%.The germanium dustball being obtained under this proportioning, intensity is higher, in charging engineering, germanium
Dustball will not be taken away by high temperature gas flow or dedusting fan, decrease loss of material, and improve production environment.Preferably, first
In beginning powder, the mass content of germanic flyash is about 67%, and the mass content of cement is about 3%, the quality of pulverized limestone
Content is about 30%.Germanium dustball under this proportioning, intensity highest, charging engineering in, germanium dustball will not be by high temperature gas flow
Or dedusting fan takes away, decrease loss of material, and improve production environment.
S102：It is mixed into water in initial powder, so that the moisture in initial powder reaches the first mass content, with
To compound.In detail it is simply that being mixed into water so that water content reaches about 10%～20% in initial powder, to be mixed
Close material, prepare pelletizing.After the abundant moistening of water, material can preferably mix, and the ball causing has certain intensity, is adding
In material engineering, germanium dustball will not be taken away by high temperature gas flow or dedusting fan, decrease loss of material, and improve production environment.
S103：By compound pelletizing, to obtain germanium dustball, and add water in balling process, so that the water in germanium dustball
Point content reaches the second mass content.In detail it is simply that by compound on balling disk (-sc) according to mother bulb formed, green-ball grow up,
The principle of anhydrous compacting carries out pelletizing, is mixed into water so that the moisture in germanium dustball reaches about 35% in balling process
～45%, the diameter of germanium dustball is about 5mm～20mm.Add water by abundant for germanium dustball moistening in balling process, prepared
Germanium dustball can have higher intensity.Preferably, research worker finds in experimentation, when the moisture in germanium dustball reaches
During to about 40%, the intensity highest of germanium dustball.When the diameter of germanium dustball is about 10mm, the intensity of germanium dustball is higher, with
When be dried required for time less, ensure germanium dustball intensity while energy saving.
S104：Germanium dustball is spontaneously dried, to obtain the germanium dustball of drying.In detail, can be by the ball made in sky
Place in gas, spontaneously dry, to obtain dry germanium dustball.Select the mode of natural drying rather than high temperature drying, can keep away
Exempt from the loss leading to germanic material volatilization to lead to germanium during high temperature.
Describe the pelletizing process of a kind of germanic flyash of the present invention below by specific embodiment in detail.
Germanic flyash used by the present invention is the flyash after Inner Mongol cylinder lattice strangle the burning of Shengli Coalfield brown coal, Calx
For active lime, cement is Portland cement for building, and component content table 1 arrives table 3.
Table 1：Germanium-containing raw material composition/%
| Component | TFe | MgO | Na2O+K2O | SiO2 | Al2O3 | CaO | As2O3 | Ge |
| Content | 19.87 | 3.78 | 1.71 | 35.41 | 8.94 | 9.12 | 2.98 | 0.35 |
Table 2：Calx meal component/% used
| Component | CaO | MgO | SiO2 | Burning subtracts | Raw burn rate+burning rate |
| Content | >85 | <4 | <3 | <5 | <10 |
Table 3：Cement Quality index used
| Project | Presetting period | Final setting time | MgO | SO3 | Fineness |
| Value | ≥45min | ≤600min | ≤ 5% | ≤ 3.5% | ≥300㎡/㎏ |
The cement adding the pulverized limestone that mass content is 30% in the germanic flyash of milled and mass content is 3% is existed
Batch mixer mix homogeneously obtaining initial powder, then the water adding mass content about 15% to initial powder mix after in balling disk (-sc)
On carry out pelletizing, add 30% about water, adjust humidity, after making balling-up, the water yield accounts for the 40% of ball weight, and pelletizing diameter is about
10mm, carries out performance test after being dried, and table 4 is test result.
Table 4：Flyash performance comparison before and after pelletizing
The pelletizing process of a kind of germanic flyash according to the present invention, carries out pelletizing after the abundant moistening that adds water, and
Dried is so that germanium dustball has some strength in its natural state, solves that charging rate in commercial production is slow and germanium dirt
Taken away by high temperature gas flow or dedusting fan and cause the problems such as production environment is poor, loss of material is serious, and the germanic flyash to the later stage
The enrichment of middle germanium produces positive role, advantageously in the enrichment of germanium.
In describing the invention, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or dark
Show relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", the feature of " second " are defined
Can express or implicitly include one or more this feature.In describing the invention, " multiple " are meant that two
More than individual, unless otherwise expressly limited specifically.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of pelletizing process of germanic flyash is it is characterised in that comprise the steps：
S101：Germanic flyash, cement and pulverized limestone are mixed, to obtain initial powder；
S102：It is mixed into water in described initial powder, so that the moisture in described initial powder reaches the first mass content,
To obtain compound；
S103：By described compound pelletizing, to obtain germanium dustball, and add water in described balling process, so that described germanium dirt
Moisture in ball reaches the second mass content；
S104：Described germanium dustball is spontaneously dried, to obtain the germanium dustball of drying.
2. a kind of germanic flyash according to claim 1 pelletizing process it is characterised in that
Described germanic flyash for brown coal burning after through being once enriched with the flyash obtaining；
In described pulverized limestone, the mass content of CaO accounts for more than the 85% of the quality of described pulverized limestone.
3. the pelletizing process of a kind of germanic flyash according to power 1 or power 2 is it is characterised in that in described initial powder,
The mass content of described germanic flyash is 65%～70%, and the mass content of described cement is 1%～5%, described pulverized limestone
Mass content be 25%～40%.
4. a kind of pelletizing process of germanic flyash according to claim 3 is it is characterised in that in described initial powder
In, the mass content of described germanic flyash is 67%, and the mass content of described cement is 3%, and the quality of described pulverized limestone contains
Measure as 30%.
5. a kind of pelletizing process of germanic flyash according to claim 1 it is characterised in that in step s 102, institute
Stating the first mass content is 10%～20%.
6. a kind of pelletizing process of germanic flyash according to claim 5 it is characterised in that in step s 102, institute
Stating the first mass content is 15%.
7. a kind of pelletizing process of germanic flyash according to claim 1 it is characterised in that in step s 103, institute
Stating the second mass content is 35%～45%.
8. a kind of pelletizing process of germanic flyash according to claim 7 it is characterised in that in step s 103, institute
Stating the second mass content is 40%.
9. a kind of pelletizing process of germanic flyash according to claim 1 it is characterised in that in step s 103, institute
State a diameter of 5mm～20mm of germanium dustball.
10. a kind of pelletizing process of germanic flyash according to claim 9 it is characterised in that in step s 103, institute
State a diameter of 10mm of germanium dustball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854386.1A CN106478015A (en) | 2016-09-27 | 2016-09-27 | A kind of pelletizing process of germanic flyash |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854386.1A CN106478015A (en) | 2016-09-27 | 2016-09-27 | A kind of pelletizing process of germanic flyash |
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| CN106478015A true CN106478015A (en) | 2017-03-08 |
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| CN201610854386.1A Pending CN106478015A (en) | 2016-09-27 | 2016-09-27 | A kind of pelletizing process of germanic flyash |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030106467A1 (en) * | 2001-10-18 | 2003-06-12 | Four Corners Group, Inc. | Cement, reduced-carbon ash and controlled mineral formation using sub-and supercritical high-velocity free-jet expansion into fuel-fired combustor fireballs |
| CN1868963A (en) * | 2005-05-25 | 2006-11-29 | 张涛 | Formula of steam-free burning-free flgash ceramic particle |
| CN101357840A (en) * | 2007-08-03 | 2009-02-04 | 天津壹生环保科技有限公司 | Baking-free type refuse burning flyash haydite and manufacturing method thereof |
| CN102092994A (en) * | 2010-11-25 | 2011-06-15 | 大连恒翔粉煤灰综合利用有限公司 | Fly ash sintering-free ceramsite |
| CN102284272A (en) * | 2011-06-23 | 2011-12-21 | 重庆大学 | Fly ash-based smoke demercuration adsorbent |
| CN103896543A (en) * | 2014-03-10 | 2014-07-02 | 临沧师范高等专科学校 | Unfired ceramsite by using lignite extracted germanium tailings as main raw material and preparation method of unfired ceramsite |
-
2016
- 2016-09-27 CN CN201610854386.1A patent/CN106478015A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030106467A1 (en) * | 2001-10-18 | 2003-06-12 | Four Corners Group, Inc. | Cement, reduced-carbon ash and controlled mineral formation using sub-and supercritical high-velocity free-jet expansion into fuel-fired combustor fireballs |
| CN1868963A (en) * | 2005-05-25 | 2006-11-29 | 张涛 | Formula of steam-free burning-free flgash ceramic particle |
| CN101357840A (en) * | 2007-08-03 | 2009-02-04 | 天津壹生环保科技有限公司 | Baking-free type refuse burning flyash haydite and manufacturing method thereof |
| CN102092994A (en) * | 2010-11-25 | 2011-06-15 | 大连恒翔粉煤灰综合利用有限公司 | Fly ash sintering-free ceramsite |
| CN102284272A (en) * | 2011-06-23 | 2011-12-21 | 重庆大学 | Fly ash-based smoke demercuration adsorbent |
| CN103896543A (en) * | 2014-03-10 | 2014-07-02 | 临沧师范高等专科学校 | Unfired ceramsite by using lignite extracted germanium tailings as main raw material and preparation method of unfired ceramsite |
Non-Patent Citations (2)
| Title |
|---|
| 李登新: "《固体废物处理与处置》", 31 July 2014, 中国环境出版社 * |
| 王绍文等: "《固体废弃物资源化技术与应用》", 30 June 2003, 冶金工业出版社 * |
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