CN100526442C - Adhesive suitable for high-tar briquette and briquette production process - Google Patents
Adhesive suitable for high-tar briquette and briquette production process Download PDFInfo
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- CN100526442C CN100526442C CNB031272428A CN03127242A CN100526442C CN 100526442 C CN100526442 C CN 100526442C CN B031272428 A CNB031272428 A CN B031272428A CN 03127242 A CN03127242 A CN 03127242A CN 100526442 C CN100526442 C CN 100526442C
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- plant amylum
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Abstract
The invention discloses a kind of binder content for high tar coal, which is made up of concave convex soil, bentonite, plant starch dried base, it uses above mentioned binder for high tar coal and the coal producing craft, uses concave convex soil, bentonite and the plant starch as materials into binder, the concave convex and the bentonite enhance the cold intensity of the coal, it also can upgrade heat intensity of cola, there doesn't generate crack in the process of combustion, the curing starch paste can enhance the cold intensity of the coal.
Description
Technical field
The invention belongs to a kind of coal powder formation technology, particularly a kind of production technique that is applicable to high tar moulded coal.
Background technology
The production of existing industry of China and coal briquette for civillan use is mainly with lime, clay, humic acids, pitch, cement, gypsum, wilkinite, paper pulp, water glass and add other chemical assistant, as caustic soda, sodium polyphosphate etc. as tackiness agent.Make tackiness agent with gypsum, cement, lime and form moulded coal after maintenance, such moulded coal carbon content is low, needs curing time long in the production, and intensity is lower, burning back the ash content of coal height, and calorific value is low, has limited large batch of needs in range of application and the production; Make tackiness agent with clay, can be made into coal briquette after the compacting, cold strength is poor, easily broken, and the clay reactive behavior is poor, causes the coal briquette gasification reactivity poor; Humic acids is poor as the moulded coal hot strength that tackiness agent obtains, the cost height; As the moulded coal fugitive constituent height that tackiness agent obtains, the secondary pollution problem is arranged in the burning with pitch, limited its application in producing, living as discharging sulfocompound and producing new tar; The moulded coal that paper pulp makes is imitated poor stability because of it, also can't be applied; Adopt wilkinite as tackiness agent, its cold strength does not also reach requirement, and production and transportation are restricted, thereby often mix use with other chemical reagent, have so just increased its production cost, produces in enormous quantities just to be restricted yet.Make bonding with water glass and close the moulded coal that makes, no matter on cold strength still is hot strength, can both reach requirement, but in use furnace phenomenon (high-temperature fusion silicic acid sodium) can occur, thereby also limited its prospects for commercial application along with the rising of furnace temperature.Because of there are the problems referred to above to some extent in existing briquette production technology, make the quality of industrial shaping coal and processing mode can't obtain due popularizing and scale operation.Enterprises such as the higher nitrogen fertilizer plant of most of level of automation, glasswork, cement mill, steelworks also do not have a family to adopt the coal powder formation technology to solve their fuel, raw material coal, thereby have limited these economic benefit of enterprises yet.In addition, with regard to the civilian coal market of vast under-developed area, also exist enormous and latent market, civilian coal needs lump coal mostly, though the market price of lump coal almost is 3 times of fine coal, supply falls short of demand lump coal also usually to occur, and the situation that fine coal overstocks in a large number.How effectively utilizing fine coal, has been the major issue that many collieries, coalwashing plant face.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can be applicable to high tar moulded coal, and make the briquette strength height, be difficult for brokenly, burning back the ash content of coal is low, a kind of coal briquette bond that fuel value is high; The present invention also provides a kind of above-mentioned briquette production technology that is applicable to the tackiness agent of high tar moulded coal that contains.
For achieving the above object, a kind of production technique that is applicable to high tar moulded coal of the present invention is to carry out in accordance with the following methods:
I, fine coal is sieved after crusher for crushing, granularity is inserted in the compound bucket less than 4mm;
II, the plant amylum that weight is accounted for fine coal weight 0.1-1.5% are dissolved in the normal-temperature water by the 1:20 weight ratio and mix with water, stir when being heated to 60-80 ℃ and cure into starch paste, insert in the compound bucket;
III, weight is accounted for the attapulgite of coal dust weight 1-12% and weight account for fine coal weight 1-12% bentonite in powder and be broken to granularity, insert in the compound bucket less than 200 orders;
IV, with fine coal and plant amylum, attapulgite, wilkinite compression moulding after the mixing and stirring in the compound bucket; Forming pressure 〉=16MPa/cm
2, last drying to moisture≤3% gets final product.
A kind ofly be applicable to that the tackiness agent of high tar moulded coal is to be made by following raw material: the weight of attapulgite accounts for fine coal weight 1-12%, and bentonitic weight accounts for fine coal weight 1 one 12%, and the weight of plant amylum accounts for fine coal weight 0.1-1.5% and forms.
A kind of its preferred weight ratio range of tackiness agent of high tar moulded coal that is applicable to of the present invention is: the weight of attapulgite accounts for fine coal weight 3-9%, bentonitic weight accounts for fine coal weight 3-9%, and the weight of plant amylum butt accounts for fine coal weight 0.3-1.4% and forms.
Above-mentioned plant amylum can adopt yam starch, whole meal flour or industrial fibre element according to the mixed mixture of arbitrary proportion; Also can select any one or any two kinds of mixing in yam starch, whole meal flour, the industrial fibre element for use.
Adopt above-mentioned tackiness agent and the briquette production technology that is applicable to high tar moulded coal, utilized Attapulgite, wilkinite and plant amylum to make tackiness agent for raw material, wherein, Attapulgite and wilkinite strengthen the cold strength of moulded coal, and can significantly improve the hot strength of moulded coal, and do not occur obvious crackle in the combustion processes, aging starch is stuck with paste the cold strength that can significantly improve moulded coal.
Moulded coal technic index of the present invention is as follows:
Moisture≤3%
Ash content≤21%
Volatile matter≤6%
Cold strength 〉=15MPa/cm
2
Hot strength 〉=6MPa/cm
2
Embodiment
Embodiment 1
At first 1000kg fine coal is sieved after crusher for crushing, granularity is input in the compound bucket by travelling belt less than 4mm; To be dissolved in the normal-temperature water by weight 1:20 by the plain butt 10kg of yam starch, whole meal flour and industrial fibre that arbitrary proportion mixes again and mixing with water, stir when being heated to 60-80 ℃ and cure into starch paste, be driven in the compound bucket by slush pump; And, will be broken to 200 orders with the 100kg attapulgite with the 100kg bentonite in powder, add in the compound bucket by the oscillatory type hopper; After the process propeller agitator fully stirs in tempering tank, fine coal and plant amylum, attapulgite, wilkinite are mixed; Deliver to the pair roller type shaper by travelling belt, at forming pressure 〉=16MPa/cm
2Condition under be pressed into moulded coal, after seasoning or baking room are dried to moisture≤3% gets final product.
Embodiment 2
At first 100kg fine coal is sieved after crusher for crushing, granularity is input in the compound bucket by travelling belt less than 4mm; Again the plain butt 15kg of whole meal flour and industrial fibre is dissolved in the normal-temperature water by weight 1:20 and mixes with water, stir when being heated to 60-80 ℃ and cure into starch paste, be driven in the compound bucket by slush pump: and, to be broken to 200 orders with the 120kg attapulgite with the 120kg bentonite in powder, add in the compound bucket by the oscillatory type hopper; After the process propeller agitator fully stirs in the compound bucket, fine coal and plant amylum, attapulgite, wilkinite are mixed; Deliver to the pair roller type shaper by travelling belt, at forming pressure 〉=16MPa/cm
2Condition under be pressed into moulded coal, after seasoning or baking room are dried to moisture≤3% gets final product.
Claims (5)
1. production technique that is applicable to high tar moulded coal is characterized in that it being to carry out in accordance with the following methods:
I, fine coal is sieved after crusher for crushing, granularity is inserted in the compound bucket less than 4mm;
II, the plant amylum that weight is accounted for fine coal weight 0.1-1.5% are dissolved in the normal-temperature water by the 1:20 weight ratio and mix with water, stir when being heated to 60-80 ℃ and cure into starch paste, insert in the compound bucket;
III, weight is accounted for the attapulgite of coal dust weight 1-12% and weight account for fine coal weight 1-12% bentonite in powder and be broken to granularity, insert in the compound bucket less than 200 orders;
IV, with fine coal and plant amylum, attapulgite, wilkinite compression moulding after the mixing and stirring in the compound bucket; Forming pressure 〉=16MPa/cm
2, last drying to moisture≤3% gets final product.
2. the production technique that is applicable to high tar moulded coal according to claim 1, it is characterized in that: the weight of attapulgite accounts for 3-9% of fine coal weight, bentonitic weight accounts for 3-9% of fine coal weight, and the weight of plant amylum accounts for 0.3-1.4% of fine coal weight.
3. the production technique that is applicable to high tar moulded coal according to claim 1 is characterized in that: described plant amylum adopts the mixture of yam starch, whole meal flour, industrial fibre element.
4. the production technique that is applicable to high tar moulded coal according to claim 1 is characterized in that: described plant amylum is selected a kind of in yam starch, whole meal flour, the industrial fibre element for use.
5. the tackiness agent that is applicable to high tar moulded coal according to claim 1 is characterized in that; Described plant amylum is selected any two kinds in yam starch, whole meal flour, the industrial fibre element for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031272428A CN100526442C (en) | 2003-09-30 | 2003-09-30 | Adhesive suitable for high-tar briquette and briquette production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031272428A CN100526442C (en) | 2003-09-30 | 2003-09-30 | Adhesive suitable for high-tar briquette and briquette production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1528869A CN1528869A (en) | 2004-09-15 |
| CN100526442C true CN100526442C (en) | 2009-08-12 |
Family
ID=34286010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031272428A Expired - Fee Related CN100526442C (en) | 2003-09-30 | 2003-09-30 | Adhesive suitable for high-tar briquette and briquette production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100526442C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415857C (en) * | 2005-12-30 | 2008-09-03 | 西安交通大学 | Biomass honeycomb briquette ot yellow phosphorus biuminous coal (soft coal) |
| CN101798538B (en) * | 2010-03-08 | 2013-05-01 | 柳州化工股份有限公司 | Coupling compound moulded coal binder and preparation method thereof |
-
2003
- 2003-09-30 CN CNB031272428A patent/CN100526442C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1528869A (en) | 2004-09-15 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20090812 Termination date: 20110930 |