CN1023022C - Method for preparing briquette - Google Patents
Method for preparing briquette Download PDFInfo
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- CN1023022C CN1023022C CN 88108925 CN88108925A CN1023022C CN 1023022 C CN1023022 C CN 1023022C CN 88108925 CN88108925 CN 88108925 CN 88108925 A CN88108925 A CN 88108925A CN 1023022 C CN1023022 C CN 1023022C
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- coal
- binding agent
- powder
- coke
- water
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Abstract
A process for preparing briquettes from coal or coke as raw material features that the adhesive used is a paste prepared from potato dregs after extracting starch, and the paste at least contains potato dregs powder, water and alkali or acid. The briquette prepared by the binder has high strength, good moisture resistance, low cost, good economic benefit and wide industrialization prospect.
Description
The invention belongs to solid-fuelled preparation method, be specifically related to preparation method with the moulded coal of binding agent moulding by means of the binding agent moulding.
In moulded coal was made, the performance of binding agent and briquet quality had very confidential relation, and pitch is the binding agent of using always, but its can generate benzopyrene when burning, and cause secondary pollution, and cost is also high.Deutsches Reichs-Patent DE3,136,163 usefulness spent pulping liquors are made binding agent, though low price, moisture absorption is strong, the moulded coal of making make moist the back downgrade, be immersed in water coal dust.Openly specially permit clear 58-118895 and adopt Alpha-starch, CMC and acetate ethylene copolymer to make binding agent, the moulded coal of making can be moistureproof, but expensive raw material price.
The object of the present invention is to provide that a kind of binding agent raw material sources are wide, cost is low, the preparation method of the moulded coal of the good product performance of making.
Moulded coal preparation method of the present invention is to be raw material with coal or coke, makes it to be able to the method for moulding by means of the adhesive effect of binding agent, may further comprise the steps:
A. coal or coke powder are broken to less than 3 millimeters,
B. above-mentioned coal dust or coke powder after crushed mixes by a certain percentage, stirs with binding agent,
C. said mixture is sent into compression moulding in the shaper,
D. the dehydration of the moulded coal after the moulding, fixed,
It is characterized in that described binding agent be a kind of be the mashed prod that major ingredient is made with the potato flour dregs that extracts behind the starch, this granulated slag adhesive paste includes potato flour dregs powder, water and acid or alkali at least, and the content range of above-mentioned component (weight percentage) is:
Potato flour dregs powder (butt) 10-30,
Water 50-85,
Alkali or sour 0.1-1.5,
The proportioning of coal or coke and binding agent (weight percentage) is:
Coal dust or coke powder 80-90,
Binding agent 10-20.
The potato flour dregs pasty adhesive can be by the preparation of following method: will extract granulated slag drying behind the starch and wear into meal less than 20 mesh sieves to water content＜20%, and press the granulated slag of 1 part of weight and 2-7 part weight
0.3-1.0%(is heavy) NaOH solution mix, be heated to 55-65 ℃ of about 5-10 minute one-tenth pasty state while stirring.Perhaps the granulated slag of 1 part of weight mixes with the water of 3-6 part weight, is heated to 55-65 ℃ while stirring, behind the about 5-10 minute one-tenth pasty state, adds the heavy vitriol oil of 0.01-0.06 part again, and stirs.Also available other mineral alkali of the NaOH wherein and the vitriol oil and acid substitution.
Potato flour dregs can be selected the potato granulated slag for use, also can be the Ipomoea batatas granulated slag, and raw material resources are abundant, and cost is low, Zhi Bei binding agent as stated above, and cohesive force is strong, and made briquette strength height, hydrophobicity are good.
In above-mentioned potato flour dregs binding agent, can also add the spent pulping liquor of 0.5-2.0 part (in 1 part of weight granulated slag) proportion about 1.16,, have intensity, thermostability and hydrophobicity preferably equally with the moulded coal that this binding agent is made.
Add the pollution to environment can reduce the moulded coal burning time of an amount of sulphur-fixing agent in above-mentioned binding agent, the present invention adds 2-6%(by weight of binder) lime as sulphur-fixing agent.
Water-content in the above-mentioned binding agent does not comprise water content in the spent pulping liquor.
Moulded coal preparation method of the present invention can be the boiler briquette of raw material with bituminous coal in order to preparation not only, can be the gas making moulded coal of raw material in order to preparation hard coal, coke powder also.
The water-content of raw material coal dust or coke powder generally should be in 5%.
The moulding of the mixture of binding agent that mixes and coal dust or coke powder can be selected any prior art for use, and it is 200-300kg/cm that the present invention selects forming pressure for use
2Roller briquetting machine compression moulding, then can be in 110-150 ℃ dryer the dry 1-2 hour water-content to the moulded coal get final product less than 2.5%.
Compared with the prior art, great advantage of the present invention is to select for use the main raw material of potato flour dregs as binding agent, not only can make good moulded coal, and because aboundresources, inexpensive, greatly reduce the cost of moulded coal, good in economic efficiency, thus make the moulded coal industrialization become possibility.Add an amount of spent pulping liquor, promptly can obtain superior in quality moulded coal, can utilize spent pulping liquor again, to the pollution of environment, turn bane into boon when reducing its direct discharging.
The present invention is described further with following embodiment:
Forming pressure: 300kg/cm
2; Dehydrate: 80 ℃ 1 hour, 140 ℃ 1 hour.
Raw material coal and analytical results see Table 2.(seeing Table 1)
Annotate: embodiment 1,3 in the table, and acid or alkali item are NaOH content in 4,5,7,8,10,11,12, and all the other are dense H
2SO
4Content.
The coal of embodiment 11 is 10% Gujiao City's coal and 90% Xishan coal in the table, and 0.4% lime is arranged in the proportioning in addition.
The coal of embodiment 12 is 15% Gujiao City's coal and 85% Jincheng coal in the table.(seeing Table 2)
The briquet quality measuring method:
1. ultimate compression strength: get 10 coal briquettes arbitrarily,, average in testing of materials aircraft measurements.
2. moisture resistance intensity: get 10 coal briquettes arbitrarily, at room temperature soaked two hours in the water, do not break, take out, in testing of materials aircraft measurements, average again 105-110 ℃ of oven dry.
3. dropping strength: get 10 coal briquettes arbitrarily, on＞8mm steel plate, fall three times, represent with the weight % of＞13mm from the free-falling of 1.5 meters height.
4. abrasive wear resistance: get 10 coal briquettes arbitrarily, after small-sized rotary drum transfer 100 is changeed, represent with weight % greater than 25mm.
5. thermostability: get 10 coal briquettes arbitrarily, after 15 minutes, represent with weight % greater than 13mm 850 ℃ of heating.
The proportioning raw materials of table 1 moulded coal and quality index
Real coal proportioning raw materials (weight %) intensity heat
Executing coal potato water paper pulp acid resistance to compression moisture resistance falls wear-resisting steady
Fixed
Or the property
Example is planted kg/ kg/ % % % of granulated slag waste liquid alkali
1 peak-to-peak 87.0 2.1 10.8 0.10 146 146 99.6
2 peak-to-peaks 87.0 2.1 10.9 0.02 118 104 99.0
3 Jincheng 83.3 3.6 13.0 0.08 82 111 98.0
4 Western Hills 83.3 3.6 13.0 0.08 90 50 93.5
5 coke powders 83.3 3.6 13.0 0.07 64 45 95.0
6 peak-to-peaks 85.5 1.8 11.0 1.7 0.02 141 160 99.5
7 peak-to-peaks 87.7 1.5 8.9 1.8 0.09 138 145 99.5
8 coke powders 82.0 3.5 12.8 1.6 0.08 86 58 99.8
9 Jincheng 82.2 2.5 13.2 2.1 0.02 93 94 99.8 98.3 97.2
10 Jincheng 87.0 2.2 9.4 1.3 0.07 101 125 99.6 98.5 97.8
11 84.0 2.6 9.5 3.4 0.07 103 70 95.8 98.8 99.5
12 86.5 2.2 9.5 1.7 0.07 104 104 99.6 98.8 98.4
Table 2 coal (Jiao) powder analytical results
Analysis project/coal Jincheng peak-to-peak Western Hills Gujiao City coke powder
W
f2.69 1.26 0.72 0.96 1.30
A
f24.08 10.06 22.06 19.57 20.80
V
f10.55 2.80 14.4 16.62 2.35
Characteristic of char residue 21561
C
f64.69 84.51 67.76 69.78 75.02
H
f2.70 1.35 3.60 3.66 0.48
O
f4.39 1.79 4.40 3.81 0
N
f0.89 0.69 0.65 1.10 1.32
S
f Q0.56 0.34 0.81 1.12 1.08
Q
f GW5890 7070 6450 6720 6040
The present invention compared with prior art has technology novelty, low, the magnetic strength advantages of higher of product iron loss, these advantages from comparative example as seen:
Comparative example one:
The present invention has adopted and novel carried out the method that preageing handles before cold rolling and produce high magnetic orientation silicon steel, has corrected the prejudice that must avoid preageing before cold rolling, obtains the non-equi-axed crystal of the high CRYSTALLITE SIZES configuration of the low magnetic strength of iron loss simultaneously.
Classification cold rolling process macrograin
--cold rolling----cold rolling--timeliness of timeliness that the spy opens clear hot rolling ... cold rolling size is approximate
50-16610's (raw material thickness of slab) (final thickness of slab) is large-scale etc.
The axialite grain
Hot rolling of the present invention----cold rolling--timeliness of preageing ... cold rolling CRYSTALLITE SIZES
It is non-that (raw material thickness of slab) (final thickness of slab) disposes
Equi-axed crystal
Comparative example two:
Band steel with the smelting of generally well-known high-magnetic induction, low-iron loss cold-rolled orientation silicon steel technology, casting, hot rolling, normalizing slow cooling is made raw material; undertaken cold rolling by two kinds of methods respectively: it is rolling that (1) opens clear 50-16610 patented method by the spy: be about to 2.2 mm thick hot rolled strips and be cold-rolled to 1.5 mm thick earlier; it is rolling to carry out timeliness in each passage of 1.5 millimeters, 1.15 millimeters, 0.85 millimeter and 0.55 millimeter then, and the Heating temperature of ageing treatment is 250 ℃ of insulations 5 minutes.(2) produce by preageing facture of the present invention: promptly carry out one time ageing treatment before cold rolling earlier, all to carry out ageing treatment the same with each passage of above-mentioned said 1.5 millimeters, 1.15 millimeters, 0.85 millimeter and 0.55 millimeter for other.Two kinds of steel plates all contain TiO in 840 ℃ of continuous annealings, coating
2MgO solution after dry, under 1210 ℃ through 20 hours high temperature annealings.Not being coated with tension film preceding magnetic and macrograin situation sees the following form:
Claims (3)
1, a kind of is the method for raw material by means of the adhesive preparation moulded coal with coal or coke, comprises the steps:
A. coal or coke powder are broken to less than 3 millimeters,
B. above-mentioned coal dust or coke powder after crushed mixes by a certain percentage, stirs with binding agent,
C. said mixture is sent into compression moulding in the shaper,
D. the dehydration of the moulded coal after the moulding, fixed,
It is characterized in that described binding agent be a kind of be the mashed prod that major ingredient is made with the potato flour dregs that extracts behind the starch, this granulated slag pasty adhesive includes potato flour dregs powder, water and a spot of acid or alkali at least, and the content range of above-mentioned component (weight percentage) is:
Potato flour dregs powder (butt) 10-30
Water 50-85
Alkali or sour 0.1-1.5
In above-mentioned binding agent, be added with the sulphur-fixing agent of 2-6% (by weight of binder) in addition,
The proportioning of coal or coke and binding agent (weight percentage) is:
Coal dust or coke powder 80-90
Binding agent 10-20.
2, the method for preparing moulded coal as claimed in claim 1 is characterized in that the compositing range (weight percentage) of described binding agent is:
Potato flour dregs powder (butt) 14-30
Water 70-85
NaOH or dense H
2SO
40.2-1.5.
3, the method for preparing moulded coal as claimed in claim 1 is characterized in that the compositing range (weight percentage) of described binding agent is:
Potato flour dregs powder (butt) 10-25
Water 50-80
NaOH or dense H
2SO
40.1-1.2
Spent pulping liquor (proportion about 1.16) 5-35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108925 CN1023022C (en) | 1988-12-22 | 1988-12-22 | Method for preparing briquette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108925 CN1023022C (en) | 1988-12-22 | 1988-12-22 | Method for preparing briquette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1043521A CN1043521A (en) | 1990-07-04 |
| CN1023022C true CN1023022C (en) | 1993-12-08 |
Family
ID=4835250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88108925 Expired - Fee Related CN1023022C (en) | 1988-12-22 | 1988-12-22 | Method for preparing briquette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023022C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110869475A (en) * | 2017-07-07 | 2020-03-06 | 株式会社Posco | Method for producing briquette and briquette produced by the method |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037615C (en) * | 1992-09-08 | 1998-03-04 | 煤炭科学研究总院北京煤化学研究所 | Briquette for gasification |
| CN1340457A (en) | 2000-09-01 | 2002-03-20 | 山东鲁北企业集团总公司 | Process for preparing phosphoric acid |
| CN100392112C (en) * | 2005-12-27 | 2008-06-04 | 天津新技术产业园区津良科技有限公司 | Slag making recarburized ball and its production method |
| CN101982531A (en) * | 2010-11-11 | 2011-03-02 | 武钢集团昆明钢铁股份有限公司 | Briquette and method for producing coal gases by using briquette |
| CN102358860A (en) * | 2011-09-26 | 2012-02-22 | 三明学院 | Molded coal binder, biomass molded coal containing the molded coal binder and their preparation methods |
| CN102618343A (en) * | 2012-04-10 | 2012-08-01 | 雷军 | Instant water coal briquette and molding method thereof |
| CN104946334A (en) * | 2015-05-26 | 2015-09-30 | 福建中煤化工环保科技有限公司 | Multifunctional high-efficiency synthetic ammonia gas-making briquette dry powder adhesive and preparation method thereof |
| KR101827997B1 (en) * | 2016-10-12 | 2018-02-13 | 주식회사 포스코 | Method and apparatus for manufacturing coal briquettes |
| CN109207222A (en) * | 2018-09-27 | 2019-01-15 | 浑源县环保型煤科技发展有限责任公司 | A kind of moulded coal and preparation method thereof and making apparatus |
| WO2021201666A1 (en) * | 2020-03-31 | 2021-10-07 | Некоммерческое Акционерное Общество "Казахский Национальный Университет Имени Аль-Фараби" | Method for producing coal briquettes |
| RU2767863C9 (en) * | 2021-06-29 | 2022-04-19 | Эдуард Владимирович Алексеенко | Method of producing carbon-containing briquettes from non-caking coal |
-
1988
- 1988-12-22 CN CN 88108925 patent/CN1023022C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110869475A (en) * | 2017-07-07 | 2020-03-06 | 株式会社Posco | Method for producing briquette and briquette produced by the method |
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| Publication number | Publication date |
|---|---|
| CN1043521A (en) | 1990-07-04 |
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