CN1078237C - Method for making industrial briquette - Google Patents
Method for making industrial briquette Download PDFInfo
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- CN1078237C CN1078237C CN98115450A CN98115450A CN1078237C CN 1078237 C CN1078237 C CN 1078237C CN 98115450 A CN98115450 A CN 98115450A CN 98115450 A CN98115450 A CN 98115450A CN 1078237 C CN1078237 C CN 1078237C
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- binder bond
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Abstract
The present invention relates to a method for preparing industrial briquettes, which uses powdered coal as raw material. The method comprises the following steps: adding organic binders using potato starch as raw material, inorganic binders using water glass as raw material, and calcium compound sulfur-fixing agents to carry out mixing, pugging, cold press moulding and natural drying or baking to obtain products. The briquette prepared by the present invention has the advantages of low cost, good waterproof performance, high anti-compression strength, less ash, high heat dividing value and high fixed carbon content. The present invention is suitable for preparing boiler briquettes and gasified coal briquettes.
Description
The invention belongs to the preparation method of moulded coal, relate in particular to a kind of preparation method of industrial shaping coal.
At present, domestic industrial shaping coal because water-repellancy is poor, in transportation, behind round water pouring or the bubble, does not have intensity, and is broken easily during carrying, brings difficulty for the storage and the transportation of moulded coal, improves the water-repellancy of moulded coal so people begin one's study.Chinese patent CN 86101384 and CN1057069 have added the polyvinyl acetal binding agent in moulded coal, the moulded coal water resistance is improved, and owing to polyvinyl alcohol price height, make the cost height of moulded coal, and industrial being difficult to promotes.
Goal of the invention of the present invention provides that a kind of cost is low, water resistance good and the preparation method of the moulded coal that intensity is high.
The object of the present invention is achieved like this, is raw material with the coal dust, adds organic and inorganic binding agent, pinches through mixing, mixing, coldmoulding, seasoning two days or oven dry make product.
Preparation method of the present invention is as follows:
(1) coal dust is broken to less than 3mm;
(2) above-mentioned coal dust after crushed mixes by a certain percentage with organic binder bond, mineral binder bond, stirs and mixes and pinch evenly;
(3) with mixture coldmoulding, seasoning or oven dry obtain product;
The proportioning (weight percent) that it is characterized in that coal dust and organic binder bond, mineral binder bond is:
Coal dust 90-91%
Organic binder bond 5-7%
The machine binding agent 3-5% of unit
Aforesaid organic binder bond component is to be that main component is made colloid with the yam starch, and its composition (weight percent) is:
Starch 13.0-14.8%
Tributyl phosphate (TBP) 0.1-0.2%
Alkali 0.2-0.3%
Borax 0.01-0.02%
Concentration is 30% hydrogen peroxide 0.1-0.2%
Water 84.5-86.5%
Organic constituent can prepare as follows:
A. dissolving: add the water of total consumption 1/2 in the I still, be heated to 60-70 ℃, add yam starch then, make it dissolving, the limit edged stirs;
B. oxidation and gelatinization: at major ingredient constantly in the dissolving, drip hydrogen peroxide and make its abundant oxidation (if bubble time, drip TBP and steep clearly), add alkali lye then, and stirred once (shared 2 hours of whole process) every 10 minutes;
C. dilute: other 1/2 water that is heated to 60-70 ℃ in the II still is pumped in the I still dilute, and constantly stir about 20 minutes;
D. become glue: borax is added in about 10 times boiling water dissolve, add then in the I still and stir,, promptly get product to faint yellow translucent colloid.
Aforesaid mineral binder bond component is to be the colloid that main component is made with water glass, and its composition (weight percent) is:
Water glass 62.5-63%
Alum 0.4-0.5%
Saltcake 0.4-0.5%
Green vitriol 0.15-0.25%
Arsenic potassium 0.1-0.15%
Water 35.6-36.45%
Inorganic component can prepare as follows:
A. dissolving: earlier alum is put into still, the water boil that adds up consumption 35% about 100 ℃, be incubated dissolve fully to alum till;
B. reaction: in transparent alum steep, drop into saltcake, green vitriol, arsenic potassium successively, add all the other water of 65% again, and constantly stirred 20 minutes;
C. filter: stopped slightly about 5 minutes, and filtered, discard filter residue, filtrate is stand-by;
D. drip water glass: under constantly stirring, slowly water glass is dropped to (c) filtrate in, stop to stir, precipitate 12 hours;
E. centrifuging: the mixed solution centrifuging with (d) gets, get the light green oily liquids, promptly get product.
Compared with the prior art the present invention has following advantage:
(1) water resistance is good.In water, soak the diffusing time of the original shape of maintenance greater than 20 days, wet strength (in water, soaking the ultimate compression strength of surveying after two hours): 440～490N/.
(2) so because the few moulded coal cost of binding agent consumption is low.
(3) intensity height.Ultimate compression strength 680-720N/, dropping strength 90-96%.
(4) moulded coal after the moulding can be exempted from oven dry, and seasoning got product in two days, and investment reduces.
Embodiment 1
A. the making of organic binder bond:
(1) dissolving: add the water of 42.9Kg in the I still, be heated to 65 ℃, add 13Kg starch then, make it dissolving, the limit edged stirs;
(2) oxidation and gelatinization: in the starch major ingredient constantly dissolved, dropping concentration was 30% H
2O
20.1Kg make its abundant oxidation, drip TBP 0.01Kg during as if foaming.Add concentration then and be 30% white liquor 0.8Kg, and stirred once shared 2 hours of whole process every 10 minutes;
(3) dilution: the II still is heated to 60-70 ℃ 42.9Kg water pumps in the I still and release, and continuous stir about 20 minutes;
(4) become glue: concentration is that 10% borax solution 0.1Kg joins in the I still and stirs, and to the translucent colloid 99.81Kg that easily flows, promptly gets product.
B. the making of mineral binder bond:
(1) dissolving: earlier 0.5Kg alum is put into still, adding 35% of total water amount is the water boil of 12.8Kg, about 100 ℃, be incubated dissolve fully to alum till;
(2) reaction: in transparent alum steep, drop into the 0.5Kg saltcake successively, the 0.25Kg green vitriol, 0.15Kg arsenic potassium adds the hot water that all the other water of 65% are 23.65Kg (more than 80 ℃) again, and stirred 20 minutes, reacts fully;
(3) filter: leave standstill 5 minutes after-filtration, discard filter residue, get filtrate (37.85Kg-0.15Kg)=37.7Kg;
(4) add water glass: under constantly stirring, slowly 63.0Kg water glass is joined (3) filtrate in, stop to stir, precipitate 12 hours after-filtration;
(5) " centrifugal " filters: the mixed solution " centrifugal " that (4) are got filters, and gets light green oily liquids (100.7Kg-0.2Kg)=100.5kg.
C. in the bituminous coal of 100Kg, the organic binder bond that adds 7.8Kg, the mineral binder bond of 3kg, mix back coldmoulding, oven dry makes product, and measurement result is ultimate compression strength 720N/, dropping strength 96.6%, water-repellancy (immersion keeps the time that original shape is not loose in water) was greater than 20 days, and 490N/ is individual for wet strength (in the ultimate compression strength of water logging bubble survey after two hours).
Embodiment 2
A, two steps of b are with embodiment 1.
C. in the bituminous coal of 100Kg, the organic binder bond that adds 7Kg, the mineral binder bond of 3Kg, mix back coldmoulding, oven dry (or seasoning two days) makes product, and measurement result is ultimate compression strength 720N/, dropping strength 96%, water-repellancy (immersion keeps the time that original shape is not loose in water) was greater than 20 days, and 490N/ is individual for wet strength (in the ultimate compression strength of water logging bubble survey after two hours).
Embodiment 3
A, two steps of b are with embodiment 1.
C. in the bituminous coal of 100Kg, the organic binder bond that adds 6Kg, the mineral binder bond of 4Kg, mix back coldmoulding, oven dry (or seasoning two days) makes product, and measurement result is ultimate compression strength 700N/, dropping strength 95%, water-repellancy (immersion keeps the time that original shape is not loose in water) was greater than 20 days, and 480N/ is individual for wet strength (in the ultimate compression strength of water logging bubble survey after two hours).
Embodiment 4
A, two steps of b are with embodiment 1.
C. in the bituminous coal of 100Kg, the organic binder bond that adds 5Kg, the mineral binder bond of 5Kg, mix back coldmoulding, oven dry (or seasoning two days) makes product, and measurement result is ultimate compression strength 700N/, dropping strength 95%, water-repellancy (immersion keeps the time that original shape is not loose in water) was greater than 20 days, and 460N/ is individual for wet strength (in the ultimate compression strength of water logging bubble survey after two hours).
Embodiment 5
A, two steps of b are with embodiment 1.
C. in 70Kg bituminous coal and 30Kg hard coal, the organic binder bond that adds 6Kg, the mineral binder bond of 4Kg, mix back coldmoulding, oven dry (or seasoning two days) makes product, and measurement result is ultimate compression strength 690N/, dropping strength 90%, water-repellancy (immersion keeps the time that original shape is not loose in water) was greater than 20 days, and 460N/ is individual for wet strength (in the ultimate compression strength of water logging bubble survey after two hours).
Embodiment 6
A, two steps of b are with embodiment 1.
C. in 60Kg bituminous coal and 40Kg hard coal, the organic binder bond that adds 5Kg, the mineral binder bond of 5Kg, mix back coldmoulding, oven dry (or seasoning two days) makes product, and measurement result is ultimate compression strength 680N/, dropping strength 90%, water-repellancy (immersion keeps the time that original shape is not loose in water) was greater than 20 days, and 440N/ is individual for wet strength (in the ultimate compression strength of water logging bubble survey after two hours).
Claims (1)
1. the preparation method of an industrial shaping coal comprises:
(1) coal dust is broken to less than 3mm;
(2) above-mentioned coal dust after crushed mixes by a certain percentage with organic binder bond, mineral binder bond, stirs and mixes and pinch evenly;
(3) with mixture coldmoulding, seasoning or oven dry obtain product; It is characterized in that coal dust and organic binder bond, mineral binder bond weight percent consist of:
Coal dust 90-91%
Organic binder bond 5-7%
Mineral binder bond 3-5%
The weight percent of above-mentioned organic binder bond consists of:
Starch 13.0-14.8%
Tributyl phosphate (TBP) 0.1-0.2%
Alkali 0.2-0.3%
Borax 0.01-0.02%
Concentration is 30% hydrogen peroxide 0.1-0.2%
Water 84.5-86.5%
The composition weight percent of above-mentioned mineral binder bond consists of:
Water glass 62.5-63%
Alum 0.4-0.5%
Saltcake 0.4-0.5%
Green vitriol 0.15-0.25%
Arsenic potassium 0.1-0.15%
Water 35.6-36.45%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98115450A CN1078237C (en) | 1998-07-07 | 1998-07-07 | Method for making industrial briquette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98115450A CN1078237C (en) | 1998-07-07 | 1998-07-07 | Method for making industrial briquette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1240818A CN1240818A (en) | 2000-01-12 |
| CN1078237C true CN1078237C (en) | 2002-01-23 |
Family
ID=5224591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98115450A Expired - Fee Related CN1078237C (en) | 1998-07-07 | 1998-07-07 | Method for making industrial briquette |
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| Country | Link |
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| CN (1) | CN1078237C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101130704B (en) * | 2006-08-22 | 2010-05-12 | 中国科学院过程工程研究所 | Moulded coal used for decoupling burning and method of producing the same |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355868C (en) * | 2006-10-11 | 2007-12-19 | 北京科兰之星环保科技有限公司 | Clean briquette for producing chemical fertilizer gas and its prepn process and application |
| CN101812340B (en) * | 2010-04-15 | 2012-11-07 | 宋邦娟 | Water-soluble briquette adhesive and process applied to briquette production thereof |
| CN103060042A (en) * | 2013-01-07 | 2013-04-24 | 孟越峰 | Waterproofing agent used on briquette surface and preparation method thereof, and waterproof briquette and manufacturing method thereof |
| CN103450964B (en) * | 2013-08-30 | 2015-02-11 | 遵义志得碳塑制品有限责任公司 | Coal briquette and processing method thereof |
| CN111500336A (en) * | 2020-04-30 | 2020-08-07 | 西安科技大学 | Environment-friendly waterproof briquette binder and preparation process thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110297A (en) * | 1994-12-20 | 1995-10-18 | 河南省安阳化肥厂 | Compound binding agent and process for production of briquet |
-
1998
- 1998-07-07 CN CN98115450A patent/CN1078237C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110297A (en) * | 1994-12-20 | 1995-10-18 | 河南省安阳化肥厂 | Compound binding agent and process for production of briquet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101130704B (en) * | 2006-08-22 | 2010-05-12 | 中国科学院过程工程研究所 | Moulded coal used for decoupling burning and method of producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1240818A (en) | 2000-01-12 |
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