CN101362975A - Molded coal using slime as raw material and preparation method thereof - Google Patents
Molded coal using slime as raw material and preparation method thereof Download PDFInfo
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- CN101362975A CN101362975A CNA200810079307XA CN200810079307A CN101362975A CN 101362975 A CN101362975 A CN 101362975A CN A200810079307X A CNA200810079307X A CN A200810079307XA CN 200810079307 A CN200810079307 A CN 200810079307A CN 101362975 A CN101362975 A CN 101362975A
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Abstract
The invention relates to a formed coal which takes coal slime as a raw material, 70 to 85 parts of the coal slime, 5 to 10 parts of silica and 2 to 5 parts of silicate are taken as the raw materials, water is added for even mixing, and the formed coal is prepared after pressing, forming and drying. Paraffin can be further sprayed on the prepared formed coal, thereby leading the surface of the formed coal to be wrapped with a layer of paraffin coating. The formed coal has wide sources of the raw materials, simple material preparation, low production cost, significantly improved combustion performance, fast ignition, long combustion time, full combustion, high heat, low ash content and less soot. The produced formed coal can facilitate the storage and the transportation, have dust-free storage and reduce the environmental pollution, so that the formed coal is the high-heat formed coal which can meet the industrial production, the heating, the civil use, and the like.
Description
Technical field
The invention belongs to the coal processing technique field, relate to a kind of solid fuel, being specifically related to a kind of is the moulded coal and preparation method thereof of main raw material with the coal slime.
Background technology
Because becoming more meticulous with specialized of industrial coal, most of coals all will pass through washing when output, to adapt to user's requirement.Coal slime is the inferior fuel of a kind of fine particle high-moisture of discharging in the coal washing course of processing, and output is big, difficult treatment.The coal slime of many coal washerys is directly open-air places, and has caused the serious environmental pollution.Because coal combustion is poor, be difficult to transportation again, present most of coal washerys can only be handled it as cheap domestic fuel with extremely low price.
The at present existing technology report that uses coal slime to produce moulded coal, but great majority are that coal slime and coke powder or other fine coal are used, and the coal slime consumption of digestion is less.And its complex manufacturing, facility investment is big, and being not suitable on a small scale, the coal washery produces.Chinese patent 2004100436214 discloses a kind of coal washing chamotte mould coal, adopt coal washing mud and loess to add the water mixing moulding and make moulded coal, the moulded coal thermal value that this method is produced is low, having a large amount of coal smokes in the moulded coal combustion processes produces, light difficulty, combustion instability, and moulded coal is frangible behind water.
Summary of the invention
The objective of the invention is to overcome the weak point that exists in the above-mentioned technology, provide a kind of cost low, easy processing, fuel value height, good waterproof performance, clean hygiene, New-type fuel with certain intensity.
For achieving the above object, the invention provides a kind of is the moulded coal of raw material with the coal slime.Moulded coal of the present invention is that the component with following portions by weight is a raw material:
Coal slime 70～85
Tripoli 5～10
Silicate 2～5
Add water and mix, compression moulding is made after the drying.
In order to guarantee the high combustion heat of moulded coal, the coal slime that the present invention uses need be the coal slime that calorific value reaches 3700～5500kcal/Kg.Usually, through chemical examination, the calorific value of the discarded coal slime in most of coal washerys all within this scope, can directly be used as the raw material of producing moulded coal.And for the very low coal slime of calorific value, then need to make its calorific value reach requirement by the mode of allocating the high calorie coal into.
Except the main raw material coal slime, the present invention has also used additive tripoli and silicate in moulded coal.Tripoli wherein mainly uses as caking agent, and silicate can be a kind of in water glass, potassium silicate, Calucium Silicate powder or the Magnesium Silicate q-agent, uses mainly as sulphur-fixing agent.
Can also on the moulded coal of making, spray paraffin, make at the surface of moulded coal parcel one deck wax clothing.Purpose at moulded coal surface spraying paraffin has 3 points: on the one hand, paraffin can play combustion-supporting effect, helps the moulded coal sufficient combustion; On the other hand, parcel paraffin can play waterproof on the moulded coal surface, moistureproof purpose; Again on the one hand, the moulded coal cleaning surfaces behind the parcel paraffin, not sticking black, clean hygiene.Usually, the paraffin weight of moulded coal surface spraying accounts for 0.5～1% of moulded coal gross weight.
Moulded coal of the present invention is to adopt the ordinary method preparation, be about to coal slime, tripoli and silicate and add mixing pulverizing in the pulverizer, be transported to again in the stirrer, add the suitable quantity of water mixing and stirring according to described weight percent, be transported to the ball press press forming, make moulded coal after the drying.
Further, at dried moulded coal surface spraying paraffin, to form one deck wax clothing on the moulded coal surface.
The present invention packs the moulded coal of making into and packs in the plastics bag, reaches the purpose of secondary protection against the tide, and is convenient for carrying, clean hygiene.
Moulded coal of the present invention is compared with existing bunker coal, has the following advantages:
1, raw material sources are extensive, and batching is simple, and production cost is low, has improved the utility value of coal slime.
2, the combustionproperty of moulded coal of the present invention is compared with the homogeneity coal slime and is had clear improvement, and it is fast to show as igniting, and combustion time is long, sufficient combustion, and the heat height, ash content is few, and flue dust is little.
3, the briquette strength of Sheng Chaning is convenient to store transportation near primary lump coal level, is difficult for fragmentation, deposits no dust, does not touch with one's hand, and clean hygiene has reduced the pollution to environment.
4, the present invention makes this obsolete fuel obtain once more utilizing, and is a kind ofly can satisfy industrial production, heating, the high calorie moulded coal that uses such as civilian.
Embodiment
Embodiment 1
The coal slime of getting 800Kg calorific value 4600kcal/Kg adds limit material machine and holds in the bucket, and the limit material machine attrition crushing by under the funnel is transported in the pulverizer by travelling belt.
Get the 80Kg tripoli and pack into after another limit material machine carries out attrition crushing, quantitatively be transported on the conveying belt of carrying coal slime, together enter pulverizer.
Get 30Kg water glass the 3rd the limit material machine of packing into, also quantitatively be transported on the coal slime conveying belt, and enter in the pulverizer.
With three kinds of materials in pulverizer, mix pulverize after, flow out by the outlet of pulverizer, be transported in the stirrer, add 300Kg water mixing and stirring, be transported to ball press, be rolled into the oblate coal briquette of diameter 40mm, thick 20mm.
The coal briquette of compression moulding is transported to drying room by conveying belt and dries, and reaches about 8% to the water content of coal briquette.
At the exit of drying room paraffin wax spray on coal briquette, the paraffin consumption is 10Kg/t.
With the coal briquette of spraying wax clothing vinyon bag hermetic package, carry out WATER REPELLENT.Every 1.5Kg coal briquette is dressed up 1 bag, uses the electric sealing machine good seal, during use coal briquette and plastics bag is together burnt.
Embodiment 2
Production technique is with embodiment 1, and proportioning raw materials is: coal slime 750Kg, and tripoli 100Kg, Magnesium Silicate q-agent 50Kg, paraffin 10Kg makes 1 ton of moulded coal.
Embodiment 3
Proportioning raw materials is: coal slime 850Kg, and tripoli 50Kg, water glass 20Kg, paraffin 10Kg, other technological process is identical with embodiment 1, makes 1 ton of moulded coal.
Claims (8)
1, a kind of is the moulded coal of raw material with the coal slime, is that the component with following portions by weight is a raw material:
Coal slime 70～85
Tripoli 5～10
Silicate 2～5
Add water and mix, compression moulding is made after the drying.
2, according to claim 1 is the moulded coal of raw material with the coal slime, it is characterized in that at the moulded coal surface spraying spraying paraffin of making, to wrap up one deck wax clothing on the surface of moulded coal.
3, according to claim 2 is the moulded coal of raw material with the coal slime, it is characterized in that the paraffin weight that sprays accounts for 0.5～1% of moulded coal gross weight.
4, according to claim 1 is the moulded coal of raw material with the coal slime, it is characterized in that described coal slime is that calorific value is the coal slime of 3700～5500kcal/Kg.
5, according to claim 1 is the moulded coal of raw material with the coal slime, it is characterized in that described silicate is a kind of in water glass, potassium silicate, Calucium Silicate powder or the Magnesium Silicate q-agent.
6, claim 1 is described is the preparation method of the moulded coal of raw material with the coal slime, be coal slime, tripoli and silicate to be added to mix in the pulverizer according to described weight percent pulverize, be transported to again in the stirrer, add the water mixing and stirring, be transported to the ball press press forming, make moulded coal after the drying.
7, according to claim 6 is the preparation method of the moulded coal of raw material with the coal slime, it is characterized in that at dried moulded coal surface spraying paraffin.
8, according to claim 6 or 7 described be the preparation method of the moulded coal of raw material with the coal slime, it is characterized in that the moulded coal of making packed into packs in the plastics bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810079307XA CN101362975A (en) | 2008-08-27 | 2008-08-27 | Molded coal using slime as raw material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810079307XA CN101362975A (en) | 2008-08-27 | 2008-08-27 | Molded coal using slime as raw material and preparation method thereof |
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|---|---|
| CN101362975A true CN101362975A (en) | 2009-02-11 |
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| CNA200810079307XA Pending CN101362975A (en) | 2008-08-27 | 2008-08-27 | Molded coal using slime as raw material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206499A (en) * | 2011-04-27 | 2011-10-05 | 张玉山 | High-temperature-resistant oil shale powder slag cold-pressing ball and preparation method thereof |
| CN103275781A (en) * | 2013-05-29 | 2013-09-04 | 本溪振兴煤炭经销有限公司 | Composition for preparing coal briquette |
| CN106675687A (en) * | 2016-12-09 | 2017-05-17 | 广西北海浩邦新能源科技有限公司 | Low-fume biomass granule and preparation method thereof |
| CN106978228A (en) * | 2017-04-27 | 2017-07-25 | 神雾环保技术股份有限公司 | The method for preparing mixing pelletizing |
| CN107726736A (en) * | 2017-10-25 | 2018-02-23 | 西安华瑞联环保节能科技发展有限公司 | A kind of method and system for drying coal slime |
| CN112322838A (en) * | 2020-11-14 | 2021-02-05 | 河南通宇冶材集团有限公司 | Anti-pulverization production process of synthetic slag lotion |
-
2008
- 2008-08-27 CN CNA200810079307XA patent/CN101362975A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206499A (en) * | 2011-04-27 | 2011-10-05 | 张玉山 | High-temperature-resistant oil shale powder slag cold-pressing ball and preparation method thereof |
| CN102206499B (en) * | 2011-04-27 | 2013-09-04 | 张玉山 | High-temperature-resistant oil shale powder slag cold-pressing ball and preparation method thereof |
| CN103275781A (en) * | 2013-05-29 | 2013-09-04 | 本溪振兴煤炭经销有限公司 | Composition for preparing coal briquette |
| CN106675687A (en) * | 2016-12-09 | 2017-05-17 | 广西北海浩邦新能源科技有限公司 | Low-fume biomass granule and preparation method thereof |
| CN106978228A (en) * | 2017-04-27 | 2017-07-25 | 神雾环保技术股份有限公司 | The method for preparing mixing pelletizing |
| CN107726736A (en) * | 2017-10-25 | 2018-02-23 | 西安华瑞联环保节能科技发展有限公司 | A kind of method and system for drying coal slime |
| CN112322838A (en) * | 2020-11-14 | 2021-02-05 | 河南通宇冶材集团有限公司 | Anti-pulverization production process of synthetic slag lotion |
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Open date: 20090211 |