CN102658226A - Feeding method for coal briquette or formed coke production by using asphalt as adhesive - Google Patents
Feeding method for coal briquette or formed coke production by using asphalt as adhesive Download PDFInfo
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- CN102658226A CN102658226A CN2012101398854A CN201210139885A CN102658226A CN 102658226 A CN102658226 A CN 102658226A CN 2012101398854 A CN2012101398854 A CN 2012101398854A CN 201210139885 A CN201210139885 A CN 201210139885A CN 102658226 A CN102658226 A CN 102658226A
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Abstract
The invention provides a feeding method for coal briquette or formed coke production by using asphalt as an adhesive. The feeding method comprises the following steps: mixing particles of a material to be adhered and particles of asphalt; and pressurizing and crushing by using a ball mill until the asphalt is softened and uniformly attached to the material to be adhered, wherein in the extruding and crushing process, the temperature of the material is controlled to be asphalt softening point +/-5 DEG C. by the method, the asphalt can be uniformly adhered to the surface of the material to be adhered; and in the asphalt feeding process, heating and heat preservation are not required, asphalt smoke is avoided, the operation is simple and convenient, and environment is protected; meanwhile, the energy consumption is greatly reduced.
Description
Technical field
Technical field
The present invention relates to binding agent, the charging process when particularly a kind of pitch is used for moulded coal or formed coke production as binding agent.
Background technology
Pitch is irreplaceable binding agent during charcoal element and formed coke are produced, and it mainly acts on is in carbonization process, to form carbon skeleton, to increase and to guarantee the cold strength of carbonaceous product and formed coke product.Therefore, pitch in the formed coke raw material, evenly add with solid material on distribution, will play conclusive effect for formed coke and charcoal element production run and product quality.At present; Traditional pitch adding mode be with pitch (when using mid temperature pitch; Its softening point is 75～95 ℃;) under condition far above its softening point (140-180 ℃) carry out fusion, then it is sprayed into and carries out stirring and evenly mixing in the mixing plant that is loaded with solid material through pressure nozzle.Simultaneously for preventing that pitch from solidifying because of catching a cold, in whipping process, must heat and be incubated processing agitating device, so just can guarantee the sufficient infiltration between pitch and the solid material and mix.But mainly there are two problems in aforesaid way, the firstth, need be to pitch and material heating and insulation, and required energy consumption is higher.In addition, more crucial is pitch is in fusion, conveying and whipping process, owing to can't accomplish airtightly fully, the low volatility carcinogen that exists in the pitch can evaporate like materials such as glance coals, causes environmental pollution and occupational health risk.Therefore, how to seek a kind ofly can the mode of fully soaking between pitch and the material with mixing can be prevented the generation of glance coal again that stop contaminated environment, the method that can also cut down the consumption of energy simultaneously is the key technology that charcoal element and formed coke industry need solve.
Summary of the invention
Goal of the invention of the present invention is to above-mentioned deficiency, the charging process when providing a kind of pitch to be used for moulded coal or formed coke production as binding agent.
Charging process when described pitch is used for moulded coal or formed coke production as binding agent; To treat that binding material particle and pitch particle are as raw material; To treat that again the binding material particle mixes with pitch particle; Softening and evenly attached to treating on the binding material until pitch with the ball mill attrition crushing then, in the attrition crushing process, the control material temperature is asphalt softening point ± 5 ℃.Coal grain or formed coke raw material used when treating that binding material is meant carbon element product such as preparation moulded coal or formed coke according to the invention, said carbon element product can comprise carbon resistance rod, electrode paste, anode mix etc.
In scheme of the present invention; When ball mill moves; Steel ball in the ball mill and treat between binding material particle and the pitch particle to take place collision each other; Treat that binding material and pitch are fractured into powder, simultaneously because ball mill constantly rotation in the broken material process, be broken into powder treat realized uniform the mixing between binding material and the pitch; And in common shattering process; Cylindrical shell rotates to produce and falls after centrifugal force takes steel ball to certain altitude; Treat binding material and pitch and produce huge bang and abrasive action; Simultaneously because ball mill constantly rotation in the broken material process, treat in binding material and pitch and the ball mill steel ball, and cylinder inboard wall continues each other to collide and friction can produce a large amount of heats, thereby make binding material and the rising of pitch occurrence temperature (can be warming up to asphalt softening point ± 5 ℃); Pitch softens (but not fusion) gradually and is able to evenly be attached on the solid material, thereby has realized the fragmentation of material and evenly the adhering to of pitch of solid and pitch.
Among the present invention, the control temperature of charge is asphalt softening point ± 5 ℃ during attrition crushing, is because if temperature of charge surpasses above 5 ℃ of its softening point, can cause pitch to be bonded on the inwall and steel ball of disintegrating apparatus, thereby influence crushing effect; May cause the pitch volatilization if temperature is too high simultaneously, formation environmental issue and pitch waste, temperature of charge can not be low excessively simultaneously, then also can have influence on evenly adhering to of pitch if cross to hang down.
Because ball mill is other disintegrating machines relatively; Cylindrical shell rotation generation centrifugal force makes steel ball treat binding material and pitch produces huge bang and abrasive action; Simultaneously because the shattering process of ball mill is comparatively airtight and possess certain duration; Therefore the heat that produces in the shattering process is difficult for scattering and disappearing, and can make fragmentation make temperature of charge rise to the softening point temperature of pitch.And other disintegrating machines are not owing to possess the huge bang and the abrasive action of ball mill; Shattering process is unlimited relatively simultaneously, and the broken duration forges, and does not therefore possess with the pitch fragmentation and with temperature to rise to the asphalt softening point temperature; And make its condition of evenly adhering to, like vertical hammer mill etc.
This method can make pitch evenly attached to treating binding material surface, and need not heating and insulation in the pitch adition process, can not produce glance coal, operate very simple and convenient, environmentally friendly, and the very big degree reduction of energy consumption.
Preferably, treat that the binding material particle accounts for the 82%-92% of raw material weight, treat that the moisture of binding material particle and pitch particle self all is not more than 7% (wt%).Each composition moisture is because pitch is lyophobic dust in the control raw material, when moisture is overweight in the solid material, can have influence on the tack on pitch and solid material surface.If moisture is overweight in the material, water is taken away heat in the material temperature-rise period, influence material intensification effect simultaneously, and then influences the softening of pitch and evenly adhere to.
Preferably, the feed particles granularity is not more than 80mm.If it is because raw meal particle size is excessive that the control raw material granularity is not more than 80mm, can cause the obstruction of screw(-type) feeder material inlet, influence the efficient and the granularity quality of abrasive dust simultaneously, get into the specific area that has influence on material; And if granularity and specific area do not reach requirement, can cause pitch all even capacity be attached to the solid material surface, and then have influence on the cementation of pitch.
Preferably, the granularity of gained material is not more than 1mm behind the attrition crushing.In the inventive method, the raw material granularity that is used to produce formed coke and carbonaceous product (like carbon resistance rod, electrode paste, anode mix etc.) is controlled at that < 1mm, the intensity of products obtained therefrom is better.
Beneficial effect of the present invention:
In sum, than prior art, the inventive method advantage is:
1, operation is very simple and convenient, can be through have both realized the fragmentation of solid material with a kind of equipment, and realized the fragmentation of pitch again and evenly adhered to.
2, because pitch has just taken place softeningly, but not fusion takes place in shattering process, so the harmful substance in the pitch do not evaporate, the risk of environmental protection and occupational health aspect is dissolved.
3, need not the firing equipment of pitch fusion apparatus, solid material and the environmental protection equipment that glance coal is handled, process units is required greatly to reduce, practiced thrift the energy simultaneously.
4, because pitch has saved melting process, eliminate the volatile quantity of pitch, improved the effective dose of pitch in carbonization process, strengthened charing intensity.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is made further detailed description.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, allly all belong to scope of the present invention based on the technology that content of the present invention realized.
Embodiment 1
Formed coke feed particles (granularity < 80 mm) and mid temperature pitch particle (granularity < 5 mm) mixed by the weight ratio of 86:14, then with the ball mill pressurization broken until pitch softening and evenly attached to the formed coke raw material on, both; In the shattering process, the control material temperature is 75 ± 5 ℃
Embodiment 2
Formed coke feed particles (granularity < 80 mm) and mid temperature pitch particle (granularity < 5 mm) mixed by the weight ratio of 92:8, then with the ball mill pressurization broken until pitch softening and evenly attached to the formed coke raw material on, both; In the shattering process, the control material temperature is 75 ± 5 ℃.
Embodiment 3
The main operation of present embodiment is identical with embodiment 1, and difference is that formed coke feed particles and pitch particle weight ratio are 90:10.
1, moulding charing and strength test:
Material is carried out moulding and charing, and briquetting pressure is 150Kg/cm
2, in the actual production, briquetting pressure can be at 100 ~ 200Kg/cm
2Between; 1000 ℃ ~ 1200 ℃ of carbonization temperatures are about carbonization time 2h.Formed coke intensity is pressed industrial shaping coal cold pressing strength method of testing " MT/T 748-1997 " in order to test formed coke sample compression strength; Drum strength according to sintering deposit and pellet-drum strength assay method " YB/T 5166-1993 " specimen.
The comparison of gained formed coke product quality:
We can find out from table, compare with the adding mode of prior art heating and melting pitch, adopts altogether crumbling method adding pitch binder of the present invention after, the compression strength of gained formed coke, drum strength and fixed carbon have all obtained lifting.Like weight ratio is the material of 8:92; After adding through altogether broken mode; The compression strength 485kg/ of formed coke; Than adopting the formed coke compression strength (412kg/) after the fusion mode adds to improve 74kg/, drum strength has also obtained lifting simultaneously, and promptly the rotary drum breakage rate is reduced to 2.58% from 2.62% of molten asphalt.Fixed carbon also is increased to 89.6% from 89.4% of molten asphalt adding mode simultaneously.
Therefore, can find out that pitch binder adds through broken altogether mode, has not only simplified technological process, has practiced thrift investment, and the performance of products of molding bonded promotes to some extent also from the result; This is that volatilization has taken place in melting process part pitch because when adopting the heating and melting method that pitch binder is mixed with the formed coke raw material, and the effective pitch that is used for the charing effect reduces, so carbonization quality is on the contrary not as the product of employing charging process production of the present invention.
Need to prove at last; Above embodiment only is used to explain technical scheme of the present invention and is unrestricted; Although technical scheme of the present invention is specified, it will be appreciated by those skilled in the art that and to make amendment or be equal to replacement technical scheme of the present invention with reference to preferred embodiment; And not breaking away from aim of the present invention and scope, it all should be encompassed in the middle of protection scope of the present invention.
Claims (4)
1. the charging process a when pitch is used for moulded coal or formed coke production as binding agent; It is characterized in that: to treat that binding material particle and pitch particle are as raw material; To treat that again the binding material particle mixes with pitch particle; Softening and evenly attached to treating on the binding material until pitch with the ball mill attrition crushing then, in the attrition crushing process, the control material temperature is asphalt softening point ± 5 ℃.
2. the charging process when pitch according to claim 1 is used for moulded coal or formed coke production as binding agent; It is characterized in that: treat that the binding material particle weight accounts for the 82%-92% of raw material weight, treat that the moisture of binding material particle and pitch particle self all is not more than 7% (wt%).
3. the charging process when pitch according to claim 1 is used for moulded coal or formed coke production as binding agent, it is characterized in that: the granularity of said feed particles is not more than 80mm.
4. the charging process when being used for moulded coal or formed coke production according to the described pitch of the arbitrary claim of claim 1 to 3 as binding agent, it is characterized in that: the granularity of gained material is not more than 1mm behind the attrition crushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101398854A CN102658226A (en) | 2012-05-08 | 2012-05-08 | Feeding method for coal briquette or formed coke production by using asphalt as adhesive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101398854A CN102658226A (en) | 2012-05-08 | 2012-05-08 | Feeding method for coal briquette or formed coke production by using asphalt as adhesive |
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| CN102658226A true CN102658226A (en) | 2012-09-12 |
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| CN2012101398854A Pending CN102658226A (en) | 2012-05-08 | 2012-05-08 | Feeding method for coal briquette or formed coke production by using asphalt as adhesive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154278A (en) * | 2020-01-06 | 2020-05-15 | 湖南大学 | Method for preparing high-strength formed coke by cold press molding |
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| CN1045752A (en) * | 1990-01-10 | 1990-10-03 | 华东化工学院 | The method of gac commercialization aftertreatment |
| SU1723100A1 (en) * | 1989-01-10 | 1992-03-30 | Восточный научно-исследовательский углехимический институт | Method of producing coal briquettes |
| CN1113938A (en) * | 1994-06-24 | 1995-12-27 | 陆真冀 | Producing method for caking coke of coke powder |
| US20020020109A1 (en) * | 2000-08-30 | 2002-02-21 | Paul Donovan | Synthetic fuel production method |
| CN101391768A (en) * | 2008-11-07 | 2009-03-25 | 中国石油天然气股份有限公司 | Novel method for preparing active carbon from petroleum coke |
| CN101708838A (en) * | 2009-11-24 | 2010-05-19 | 武汉科技大学 | Highly oriented graphite material of nature flake graphite base and preparation method thereof |
| CN102034561A (en) * | 2010-10-09 | 2011-04-27 | 北京航空航天大学 | Carbon-based slider material for railway vehicle and preparation method thereof |
| CN102226122A (en) * | 2011-05-20 | 2011-10-26 | 中南大学 | Additive for enhancing normal-temperature bonding performance of asphalt and application method thereof |
-
2012
- 2012-05-08 CN CN2012101398854A patent/CN102658226A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1723100A1 (en) * | 1989-01-10 | 1992-03-30 | Восточный научно-исследовательский углехимический институт | Method of producing coal briquettes |
| CN1045752A (en) * | 1990-01-10 | 1990-10-03 | 华东化工学院 | The method of gac commercialization aftertreatment |
| CN1113938A (en) * | 1994-06-24 | 1995-12-27 | 陆真冀 | Producing method for caking coke of coke powder |
| US20020020109A1 (en) * | 2000-08-30 | 2002-02-21 | Paul Donovan | Synthetic fuel production method |
| CN101391768A (en) * | 2008-11-07 | 2009-03-25 | 中国石油天然气股份有限公司 | Novel method for preparing active carbon from petroleum coke |
| CN101708838A (en) * | 2009-11-24 | 2010-05-19 | 武汉科技大学 | Highly oriented graphite material of nature flake graphite base and preparation method thereof |
| CN102034561A (en) * | 2010-10-09 | 2011-04-27 | 北京航空航天大学 | Carbon-based slider material for railway vehicle and preparation method thereof |
| CN102226122A (en) * | 2011-05-20 | 2011-10-26 | 中南大学 | Additive for enhancing normal-temperature bonding performance of asphalt and application method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154278A (en) * | 2020-01-06 | 2020-05-15 | 湖南大学 | Method for preparing high-strength formed coke by cold press molding |
| CN111154278B (en) * | 2020-01-06 | 2022-01-25 | 湖南大学 | Method for preparing high-strength formed coke by cold press molding |
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Application publication date: 20120912 |