CN110467953A - The method for producing clean formed coke based on waterglass transition state binder - Google Patents
The method for producing clean formed coke based on waterglass transition state binder Download PDFInfo
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- CN110467953A CN110467953A CN201910460313.8A CN201910460313A CN110467953A CN 110467953 A CN110467953 A CN 110467953A CN 201910460313 A CN201910460313 A CN 201910460313A CN 110467953 A CN110467953 A CN 110467953A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/12—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with inorganic binders
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Abstract
A method of clean formed coke is produced based on waterglass transition state binder, the method is to choose kaolin, silica, lime stone and coal liquefaction residue, it is crushed respectively, add waterglass powder and pre-gelatinized starch, it is agitated to be uniformly mixed, then through dry grinding, alumina transition state binder is obtained；Choose mixed coal, and in proportion by mixed coal and waterglass transition state binder after mixing, then room temperature is down in cold moudling, at high temperature destructive distillation, obtain clean formed coke；Raw material sources of the present invention enrich extensively, it is cheap, it has both the effect of cold and hot binder, and cold conditions adhesive failure, hot binder play bonding effect in pyrolytic process before having an effect, and ensure that ratio of briquetting and formed coke intensity of the material in gas retort.
Description
Technical field
The present invention relates to a kind of methods for producing clean formed coke, especially a kind of to be produced using waterglass transition state binder
The method of clean formed coke.
Background technique
In the special non-renewable energy natural endowment of some few gas rich in coal and poor in oil, determine that coal burning is the main side for obtaining the energy
Formula, but dust, sulfur dioxide, the nitrogen oxides of direct burning and exhausting etc. of a large amount of coal atmospheric environment is caused it is serious
Harm, causes air environmental pollution serious, and haze weather takes place frequently, and such as China's civilian scattered burning coal consumption of statistics in 2014 is 1.6 hundred million
Ton, only accounts for the 3.8% of national coal consumption, and by taking sulfur dioxide (SO2) emissions as an example, power plant's annual emissions are 2,000,000 tons, and civilian scattered burning is then high
1.6 times of power plant emission total amount up to 3,200,000 tons, furthermore it is civilian it is scattered burn use coal smoke contamination, nitrogen oxides pollution, lime-ash
A series of problems, such as pollution, is even more inestimable to the destruction of ecological environment, however, by the shadow of the factors such as region, economy, culture
Ring, solve get up it is very difficult, to fundamentally solve the problems, such as the pollution that caused by coal burning in rural area and samll cities and towns, provided for these areas
High-quality, low price, clean alternative fuel are the task of top priority.
And use thermal coal mainly based on low-order coal as fuel, with the improvement of mechanization of coal mining, opening
The ratio of smalls is increasing during adopting, and smalls is how to efficiently use by higher and higher attention.
Clean formed coke is one kind based on low order smalls, and be aided with a small amount of sulphur-fixing agent, combustion adjuvant, binder etc., it utilizes
Existing semi-coke factory production equipment has ratio of briquetting high, strong by cleaning solid fuel obtained by medium temperature carbonization after preforming
It spends, low volatilization, low emission sulphur and the advantages that be not easy slagging, is not necessarily to desulfurization equipment, tail gas can meet national emission standard；And
And easily igniting, continuous fiery ability is strong, heating rate is fast, firing duration is long, be the various ideal fuel of domestic life stove.
Existing coal powder formation method for destructive distillation patent is less, makees as used coal liquefaction residue in Publication No. CN106635217A
For its cold and hot binder directly with destructive distillation after fine coal mixed-forming；Pitch, tar are used in Publication No. CN106701133A
Destructive distillation obtains formed coke after slag is mixed as adhesive with fine coal；It is used based on tar slag in Publication No. CN106753496A
Adhesive is aided with destructive distillation after maize flour, inorganic magnesium salt mixed-forming again；Waste heavy is used in Publication No. CN106929063A
Adhesive, and and powder is made in addition dolomite dust after coal tar asphalt, tar slag, polyaluminum ferric chloride are mixed and heated softening
It is first cold-pressed into moulded coal after coal mixing, then destructive distillation obtains formed coke.It is main that these prepare the binder used in the patent formulation of formed coke
Be in 200 DEG C or less cold forming process cold conditions binder have an effect and 400 DEG C or more retort processes in hot binder
It has an effect, but there are cold conditions adhesive failure between 200-400 DEG C in practical retort process, hot binder is not made
Stage, the use of the transition state binder due to lacking the temperature range cause formed coke percentage of damage in retort process high
Problem.
Through retrieving, the waterglass transition state binder for producing clean formed coke is had not been reported.
Summary of the invention
The invention solves concrete technical problems be for clean formed coke production adhesive exist in retort process
Cold conditions adhesive failure between 200-400 DEG C, the stage that hot binder is not had an effect, due to lacking the mistake of the temperature range
The use for crossing state binder leads to formed coke percentage of damage height in retort process, and in order to solve this problem, the present invention provides a kind of base
In the method that waterglass transition state binder produces clean formed coke.
To achieve the goals above, the invention adopts the following technical scheme.
A method of clean formed coke being produced based on waterglass transition state binder, it is characterised in that: the production is clean
The method of formed coke follows these steps to carry out:
Choose waterglass transition state binder raw material composition and its quality index be waterglass powder, soluble solids >=95wt%,
Kaolin SiO2>=50wt%, silica SiO2>=96wt%, pre-gelatinized starch: viscosity >=600mPa.s, lime stone CaO >=51wt% with
And coal liquefaction residue: Residual oil+asphaltene >=60wt%；
(2), by the feed kaolin of waterglass transition state binder, silica, lime stone and coal liquefaction residue, grain is crushed to respectively
Degree≤3mm；Waterglass powder and pre-gelatinized starch are spare；
(3) weigh 10-20 parts of 5-10 parts of 5-10 parts of kaolin, silica, lime stone being crushed by weight respectively and coal liquefaction is residual
50-60 parts of slag, 20-30 parts of waterglass powder and 10-20 parts of pre-gelatinized starch are separately weighed, are successively mixed, it is agitated mixed
It closes uniform；
(4) mixture makes raw material granularity≤100 mesh, as waterglass transition state binder again through dry grinding；
(5) choosing into furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf>=25%, dry basis ash content Ad≤
15%, butt fixed carbon FCd>=55%, the full sulphur S of buttt,d< 1.5%；
(6) the weight ratio of waterglass transition state binder and mixed coal is 10-30: 100, and mixed coal is crushed to after -3mm and water
Glass transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10-15MPa, the moulded coal under the briquetting pressure
Intensity meets > 800N/ball, by moulded coal obtained 600-900 DEG C at a temperature of, through vertical type gas retort destructive distillation, when destructive distillation
Long 2-4h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get clean formed coke is arrived.
The intensity index of clean formed coke: compression strength 800N/ball-2000N/ball, ratio of briquetting > is obtained described in wherein
80%, last rate < 10%.
In the above-mentioned technical solutions, waterglass and coal directly-liquefied residue, lime stone and starch complex are used for by the present invention
Clean formed coke is produced, function, which is mainly manifested in, has both cold conditions, hot and transition state binder triple functions, traditional formed coke
Binder only considered cold and hot binder, not in view of in smalls 200-400 DEG C of formed coke retort process of temperature after molding
It will appear cold conditions starch adhesive failure in section, the transit time that hot binder does not work is type in the time phase
It is burnt that the broken stage most easily occurs；The innovation of the invention consists in that provide it is a kind of for waterglass transition state binder, can
Continue to have an effect in 200-400 DEG C of temperature range, the mechanism of action is coal grain table after waterglass and the agitated mixing of coal grain
Bread has covered one layer of waterglass film, and adjacent coal grain is connected by adhesive film, realizes dehydration hardening during heating, when
When temperature is increased to 80 DEG C, hydrone is reset and plays catalytic action to the condensation between adjacent silanol group, is further heated to
120-130 DEG C or more, remaining hydrone promotes the condensation of silanol group, and mutually dehydration association between Si-OH key, is formed
Si-O-Si key, this is the curing system of the fabulous three-dimensional structure of water resistance.Na and H is in the closed state of three-dimensional structure film,
Chance water is insoluble, and solidification temperature rises to 200 DEG C or more, the fabulous curing system of water resistance can be obtained, so as to avoid the temperature
As bearing the broken of cleaning formed coke caused by pressure and itself expansion or compression process in stage formed coke forming process.
A kind of method that clean formed coke is produced based on waterglass transition state binder, existing skill provided by the present invention is above-mentioned
The effect of art is compared, and the raw material sources that the present invention uses enrich extensively, cheap, has both cold and hot binder, and
Cold conditions adhesive failure, hot binder play bonding effect in pyrolytic process before having an effect, and guarantee material in gas retort
In ratio of briquetting and formed coke intensity.
The present invention realizes the efficient utilization of low order smalls, improves the utility value of smalls.
Specific embodiment
A specific embodiment of the invention is made below and being further explained.
Embodiment 1
Implement the above-mentioned a kind of provided method that clean formed coke is produced based on waterglass transition state binder of the present invention, it is specific real
Applying method is as follows:
(1) the raw material composition and its quality index for choosing waterglass transition state binder are waterglass powder, soluble solids 99wt%, height
Ridge soil SiO250wt%, silica SiO296wt%, pre-gelatinized starch: viscosity 1000mPa.s, lime stone CaO56wt% and coal liquefaction
Residue: Residual oil+asphaltene 80wt%；
(2), by the feed kaolin of waterglass transition state binder, silica, lime stone and coal liquefaction residue, grain is crushed to respectively
Degree≤3mm；Waterglass powder and pre-gelatinized starch are spare；
(3) the kaolin 10kg being crushed, silica 20kg, lime stone 20kg and coal liquefaction residue 50kg are weighed by weight respectively,
Waterglass powder 20kg and pre-gelatinized starch 10kg separately is weighed, is successively mixed, it is agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as waterglass transition state binder again through dry grinding；
(5) choosing into furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf30.0wt%, dry basis ash content
Ad13.5wt%, butt fixed carbon FCd59.1wt%, the full sulphur S of buttt,d1.46wt%；
(6) the weight ratio of waterglass transition state binder and mixed coal is 10: 100, and mixed coal is crushed to after -3mm and waterglass
Transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 15MPa, the temperature by moulded coal obtained at 900 DEG C
Under, through vertical type gas retort destructive distillation, destructive distillation duration 2h, after then red heat furnace charge is come out of the stove through quenching process be down to room temperature to get
To clean formed coke.
Comparative example 1
As-fired coal material uses same mixed coal, does not add waterglass transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 15MPa, by moulded coal obtained, 900 DEG C at a temperature of, warp
Vertical type gas retort destructive distillation, destructive distillation duration 2h are down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get control is arrived
With coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 1.
1 compression strength of table, ratio of briquetting and last rate index comparison
Embodiment 2
Implement the above-mentioned a kind of provided method that clean formed coke is produced based on waterglass transition state binder of the present invention, it is specific real
It applies as follows:
(1) the raw material composition and its quality index for choosing waterglass transition state binder are waterglass powder, soluble solids 98wt%, height
Ridge soil SiO255wt%, silica SiO296.6wt%, pre-gelatinized starch: viscosity 900mPa.s, lime stone CaO54wt% and coal liquefaction
Residue: Residual oil+asphaltene 75wt%；
(2), by the feed kaolin of waterglass transition state binder, silica, lime stone and coal liquefaction residue, grain is crushed to respectively
Degree≤3mm；Waterglass powder and pre-gelatinized starch are spare；
(3) the kaolin 9kg being crushed, silica 16kg, lime stone 17.5kg and coal liquefaction residue are weighed by weight respectively
52.5kg separately weighs waterglass powder 22.5kg and pre-gelatinized starch 12.5kg, is successively mixed, and agitated mixing is equal
It is even；
(4) mixture makes raw material granularity≤100 mesh, as waterglass transition state binder again through dry grinding；
(5) choosing into furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf29.0wt%, dry basis ash content
Ad12.4wt%, butt fixed carbon FCd61.2wt%, the full sulphur S of buttt,d0.97wt%；
(6) the weight ratio of waterglass transition state binder and mixed coal is 15: 100, and mixed coal is crushed to after -3mm and waterglass
Transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 14MPa, by moulded coal obtained, in 850 DEG C of temperature
Under degree, through vertical type gas retort destructive distillation, destructive distillation duration 2.5h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove,
Obtain lustration type coke.
Comparative example 1
As-fired coal material uses same mixed coal, does not add waterglass transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 14MPa, by moulded coal obtained, 850 DEG C at a temperature of, warp
Vertical type gas retort destructive distillation, destructive distillation duration 2.5h, after then red heat furnace charge is come out of the stove through quenching process be down to room temperature to get to pair
According to coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 2.
2 compression strength of table, ratio of briquetting and last rate index comparison
| Sample | Compression strength (N/ball) | Ratio of briquetting/% | Last rate/% |
| Control coke | 760 | 73.2 | 16.8 |
| Add the clean formed coke of transition state binder | 920 | 82.5 | 9.1 |
Embodiment 3
Implement the above-mentioned a kind of provided method that clean formed coke is produced based on waterglass transition state binder of the present invention, it is specific real
It applies as follows:
(1) the raw material composition and its quality index for choosing waterglass transition state binder are waterglass powder, soluble solids 97wt%, height
Ridge soil SiO260wt%, silica SiO297.2wt%, pre-gelatinized starch: viscosity 800mPa.s, lime stone CaO53wt% and coal liquefaction
Residue: Residual oil+asphaltene 70wt%；
(2), by the feed kaolin of waterglass transition state binder, silica, lime stone and coal liquefaction residue, grain is crushed to respectively
Degree≤3mm；Waterglass powder and pre-gelatinized starch are spare；
(3) the kaolin 8kg being crushed, silica 12kg, lime stone 15kg and coal liquefaction residue 55kg are weighed by weight respectively,
Waterglass powder 25kg and pre-gelatinized starch 15kg separately is weighed, is successively mixed, it is agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as waterglass transition state binder again through dry grinding；
(5) choosing into furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf32.0wt%, dry basis ash content
Ad11.7wt%, butt fixed carbon FCd59.2wt%, the full sulphur S of buttt,d0.84wt%；
(6) the weight ratio of waterglass transition state binder and mixed coal is 20: 100, and mixed coal is crushed to after -3mm and waterglass
Transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 13MPa, by moulded coal obtained, in 800 DEG C of temperature
Under degree, through vertical type gas retort destructive distillation, destructive distillation duration 3h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, i.e.,
Obtain clean formed coke.
Comparative example 3
As-fired coal material uses same mixed coal, does not add waterglass transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 13MPa, by moulded coal obtained, 800 DEG C at a temperature of, warp
Vertical type gas retort destructive distillation, destructive distillation duration 3h are down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get control is arrived
With coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 3.
3 compression strength of table, ratio of briquetting and last rate index comparison
| Sample | Compression strength (N/ball) | Ratio of briquetting/% | Last rate/% |
| Control coke | 840 | 76.3 | 15.1 |
| Add the clean formed coke of transition state binder | 1180 | 89.1 | 7.8 |
Embodiment 4
Implement the above-mentioned a kind of provided method that clean formed coke is produced based on waterglass transition state binder of the present invention, it is specific real
It applies as follows:
(1) the raw material composition and its quality index for choosing waterglass transition state binder are waterglass powder, soluble solids 96wt%, height
Ridge soil SiO265wt%, silica SiO297.8wt%, pre-gelatinized starch: viscosity 700mPa.s, lime stone CaO52wt% and coal liquefaction
Residue: Residual oil+asphaltene 65wt%；
(2), by the feed kaolin of waterglass transition state binder, silica, lime stone and coal liquefaction residue, grain is crushed to respectively
Degree≤3mm；Waterglass powder and pre-gelatinized starch are spare；
(3) the kaolin 7kg being crushed, silica 8kg, lime stone 12.5kg and coal liquefaction residue are weighed by weight respectively
57.5kg separately weighs waterglass powder 27.5kg and pre-gelatinized starch 17.5kg, is successively mixed, and agitated mixing is equal
It is even；
(4) mixture makes raw material granularity≤100 mesh, as waterglass transition state binder again through dry grinding；
(5) choosing into furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf25.0wt%, dry basis ash content
Ad14.1wt%, butt fixed carbon FCd63.2wt%, the full sulphur S of buttt,d1.23wt%；
(6) the weight ratio of waterglass transition state binder and mixed coal is 25: 100, and mixed coal is crushed to after -3mm and waterglass
Transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 12MPa, by moulded coal obtained, in 700 DEG C of temperature
Under degree, through vertical type gas retort destructive distillation, destructive distillation duration 3.5h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove,
Obtain lustration type coke.
Comparative example 4
As-fired coal material uses same mixed coal, does not add waterglass transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 12MPa, by moulded coal obtained, 700 DEG C at a temperature of, warp
Vertical type gas retort destructive distillation, destructive distillation duration 3.5h, after then red heat furnace charge is come out of the stove through quenching process be down to room temperature to get to pair
According to coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 4.
4 compression strength of table, ratio of briquetting and last rate index comparison
| Sample | Compression strength (N/ball) | Ratio of briquetting/% | Last rate/% |
| Control coke | 830 | 75.6 | 15.8 |
| Add the clean formed coke of transition state binder | 1105 | 87.7 | 8.1 |
Embodiment 5
Implement the above-mentioned a kind of provided method that clean formed coke is produced based on waterglass transition state binder of the present invention, it is specific real
It applies as follows:
(1) the raw material composition and its quality index for choosing waterglass transition state binder are waterglass powder, soluble solids 95wt%, height
Ridge soil SiO270wt%, silica SiO298.5wt%, pre-gelatinized starch: viscosity 600mPa.s, lime stone CaO51wt% and coal liquefaction
Residue: Residual oil+asphaltene 60wt%；
(2), by the feed kaolin of waterglass transition state binder, silica, lime stone and coal liquefaction residue, grain is crushed to respectively
Degree≤3mm；Waterglass powder and pre-gelatinized starch are spare；
(3) the kaolin 5kg being crushed, silica 5kg, lime stone 10kg and coal liquefaction residue 60kg are weighed by weight respectively, separately
Waterglass powder 30kg and pre-gelatinized starch 20kg is weighed, is successively mixed, it is agitated to be uniformly mixed；
(4) mixture makes raw material granularity≤100 mesh, as waterglass transition state binder again through dry grinding；
(5) choosing into furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf34.0wt%, dry basis ash content
Ad15.0wt%, butt fixed carbon FCd55.4wt%, the full sulphur S of buttt,d0.70wt%；
(6) the weight ratio of waterglass transition state binder and mixed coal is 30: 100, and mixed coal is crushed to after -3mm and waterglass
Transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10MPa, by moulded coal obtained, in 600 DEG C of temperature
Under degree, through vertical type gas retort destructive distillation, destructive distillation duration 4h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, i.e.,
Obtain clean formed coke.
Comparative example 5
As-fired coal material uses same mixed coal, does not add waterglass transition state binder, by mixed coal be crushed to after -3mm with
Binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10MPa, by moulded coal obtained, 600 DEG C at a temperature of, warp
Vertical type gas retort destructive distillation, destructive distillation duration 4h are down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get control is arrived
With coke.
Respectively to institute in the prosperous YAW-300D type strength tester in Jinan Road and Xinxiang occasion prestige YBS-1000 type pulp classifier
Compression strength, ratio of briquetting and the last rate index for obtaining clean formed coke and control coke are measured, and test result is as follows shown in table 5.
5 compression strength of table, ratio of briquetting and last rate index comparison
| Sample | Compression strength (N/ball) | > 30mm | < 10mm |
| Control coke | 810 | 75.1 | 15.5 |
| Add the clean formed coke of transition state binder | 1052 | 85.6 | 8.6 |
Claims (2)
1. a kind of method for producing clean formed coke based on waterglass transition state binder, it is characterised in that: the production lustration type
Burnt method follows these steps to carry out:
Choose waterglass transition state binder raw material composition and its quality index be waterglass powder, soluble solids >=95wt%,
Kaolin SiO2>=50wt%, silica SiO2>=96wt%, pre-gelatinized starch: viscosity >=600mPa.s, lime stone CaO >=51wt% with
And coal liquefaction residue: Residual oil+asphaltene >=60wt%；
(2), by the feed kaolin of waterglass transition state binder, silica, lime stone and coal liquefaction residue, grain is crushed to respectively
Degree≤3mm, waterglass powder and pre-gelatinized starch are spare；
(3) weigh 10-20 parts of 5-10 parts of 5-10 parts of kaolin, silica, lime stone being crushed by weight respectively and coal liquefaction is residual
50-60 parts of slag, 20-30 parts of waterglass powder and 10-20 parts of pre-gelatinized starch are separately weighed, are successively mixed, it is agitated mixed
It closes uniform；
(4) mixture makes raw material granularity≤100 mesh, as waterglass transition state binder again through dry grinding；
(5) choosing into furnace smalls is mixed coal, quality index are as follows: dry ash free basis volatile matter Vdaf>=25%, dry basis ash content Ad≤
15%, butt fixed carbon FCd>=55%, the full sulphur S of buttt,d< 1.5%；
(6) the weight ratio of waterglass transition state binder and mixed coal is 10-30: 100, and mixed coal is crushed to after -3mm and water
Glass transition state binder is uniformly mixed, and first through cold moudling, briquetting pressure selects 10-15MPa, the moulded coal under the briquetting pressure
Intensity meets > 800N/ball, by moulded coal obtained 600-900 DEG C at a temperature of, through vertical type gas retort destructive distillation, when destructive distillation
Long 2-4h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove to get clean formed coke is arrived.
2. the method for producing clean formed coke based on waterglass transition state binder as described in claim 1, it is characterised in that: institute
State the intensity index of clean formed coke: compression strength 800N/ball-2000N/ball, ratio of briquetting > 80%, last rate < 10%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363599A (en) * | 2020-04-15 | 2020-07-03 | 宁夏中润工贸有限公司 | Novel formed coke adhesive and method for preparing formed coke by using same |
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| CN116282032A (en) * | 2023-04-04 | 2023-06-23 | 昆明理工大学 | Method for preparing pellets by coating silica particles with different caking coals for industrial silicon |
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