CN107235546A - A kind of coal washing flocculant and preparation method thereof - Google Patents
A kind of coal washing flocculant and preparation method thereof Download PDFInfo
- Publication number
- CN107235546A CN107235546A CN201710508486.3A CN201710508486A CN107235546A CN 107235546 A CN107235546 A CN 107235546A CN 201710508486 A CN201710508486 A CN 201710508486A CN 107235546 A CN107235546 A CN 107235546A
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- Prior art keywords
- coal
- flocculant
- coal washing
- starch
- washing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to technical field of coal mine, and in particular to a kind of coal washing flocculant and preparation method thereof, it is characterised in that：It is made up of following weight percents composition：Polyacrylamide 1%~5%, aluminium chloride 40~60%, starch 2%~6%, activated carbon 1%~5%, dimethylethanolamine 2%~8%, bodied ferric sulfate 10%~20%, acetic acid 8%~12%.The invention has the advantages that：It is safe and reliable, equipment and pipeline are not corroded, non-scaling, small toxicity itself can not only reach the effect of prior art, if effectively by the coal flocculating setting of suspension, and precipitum is loosely uniform, non-agglomerate is difficult hardened etc., it is most important that the coal and water separate time can also be greatly decreased, improve separative efficiency.
Description
Technical field
The present invention relates to technical field of coal mine, and in particular to a kind of coal washing flocculant and preparation method thereof.
Background technology
Coal washing is an indispensable process of coal deep processing, and coal directly mined is original from mine
Coal, raw coal has been mixed into many impurity in recovery process, and the quality of coal is also different, and fixed ash is small and fixed ash is big
Coal it is mixed in together.Coal washing is exactly to reject the impurity in raw coal, or fat coal and low-grade coal are carried out disaggregatedly
A kind of industrial technology.Product produced by after coal washing process has been generally divided into spoil, middle coal, second class cleaned coal, first class cleaned coal, passes through
Readymade coal after coal washing process is generally cleaned coal, by coal washing, can reduce Coal Transport cost, improves the utilization rate of coal,
Cleaned coal is can typically to do the energy of fuel, and the cleaned coal of bituminous coal is typically mainly used in coking, and it wants desulfuration, the industrial mistake such as decontamination
Journey, to reach the standard of coking.Coal washing water after coal mine separation is a kind of containing this kind of suspension of very fine coal and mineral powder granular
The sewage of thing, is that can reach that the requirement of state's service water and environmental protection, coal separation water reach Treated sewage reusing after having to pass through processing.Coal separation water
The characteristics of be complicated, free settling is not, it is necessary to can be only achieved the effect of coal and water separate by staticly settling for a long time, so
In process of production so that coal washing efficiency extremely low and cost input is huge.Coal in China industry more distinct issues are exactly
Coal washing rate is relatively low.Due to the appearance of coal secondary industry, it is mainly primary product, and market proportion is relatively small.To coal
Processing and large scale equipment technology grasp all be all the time developed country advantage where, handled very skillfully, just can
The control of coal commodity is caught well, and large-scale carbonization of coal also can preferably realize its commercialization and industry with gasification
Change.Coal Quality is improved, 50%-80% ash content, 30%- in coal can be removed by reducing pollution that caused by coal burning thing discharge coal washing
40% full sulphur (or 60%~80% inorganic sulfur), uses the discharge that washed coal is effectively reduced flue dust, SO2 and NOx, enters to wash
100000000 t thermal coals typically can the tSO2 of emission reduction 60~700,000, remove spoil 16Mt.Coal utilization efficiency is improved, the energy, coal is saved
Quality advance, will significantly improve coal utilization efficiency.Some researchs show：Coking pit ash reduction by 1%, the coke consumption of ironmaking
Amount reduction by 2.66%, the usage factor of blast furnace can improve 3.99%, and Ammonia Production can be economized on coal using the anthracite of washing
20%, coal for power generation ash content often increases by 1%, and caloric value declines 200~360J/g, often spends the standard coal consumption of electricity and increases by 2~5g, work
Industry boiler and kiln use washed coal, and the thermal efficiency can improve 3%~8%, optimize product structure, and improve competitive power of product development
Coal washing is conducive to coal product from single structure, low quality to multi items, high-quality transformation, realizes the high quality of product.I
The user of state's consumption of coal is more, and the requirement to Coal Quality and kind is improved constantly.Some cities, it is desirable to which coal sulphur content is less than
0.5%, ash content is less than 10%, if not developing coal separation just can not meet market demands.Reduce transport power to waste, due to the producing coal of China
Developed area more than many remote coals in area, the freight volume of coal is big, and haul distance is long, and average coal haul distance is about 600 kilometers, coal
By washing, a large amount of impurity are can remove, often enters to wash 100Mt raw coal, transport power 9600Mt-km can be saved.Coal washing flocculating polymer sinks
Depressant prescription is a kind of more professional polyacrylamide.Chemical composition content inside being in fact, which has been done, to be adjusted, and coal washing is special
With polyacrylamide, than several times general of polyacrylamide effect, come in coal washing press filtration, or in the underground water ejected
Say that effect is fairly obvious, namely 5 seconds or so its reaction time is it is seen that the effect of precipitation, thus a lot of colliery choosings
The reason for having selected coal washing Special flocculant.Washing mode typically has Jigging process, heavy media technique, wind method etc..2008 I
The annual coal of state enters to wash rate 31.43%, and far below the rate of washing that enters of developed country, relatively low enters rate of washing, and not only environment can be made
Very big influence is will also result in into very big influence, and to the product of downstream industry.And in processing procedure at two or
More than two chemical feeding points are taken up in order of priority the single inorganic flocculating agent of addition and organic flocculant to obtain existing stronger absorption
Charge neutrality ability, the coagulation effect for having bridge formation ability between stronger particulate matter again.But there is using step and needs
Defect more than equipment.
The content of the invention
The defect existed is used alone for existing inorganic flocculating agent and organic flocculant, the invention provides a kind of coal washing
Flocculant.Inorganic, organic flocculant copolymerization is prepared into a kind of coal washing flocculant by the present invention, so as to give full play to inorganic flocculation
The charge neutrality of agent and organic macromolecule bridging action, make the collaboration performance of its drug effect, greatly improve flocculation efficiency, reduce medicament and throw
High-volume, so that cost for wastewater treatment is greatly lowered, water outlet reaches discharging standards.
In order to solve the above technical problems, the technical scheme that the present invention is provided is：A kind of coal washing flocculant, it is by following heavy
Measure percent composition composition：Polyacrylamide 1%~5%, aluminium chloride 40~60%, starch 2%~6%, activated carbon 1%~
5%, dimethylethanolamine 2%~8%, bodied ferric sulfate 10%~20%, acetic acid 8%~12%.
It is preferred that, it is made up of following weight percents composition：Polyacrylamide 2%, aluminium chloride 55%, starch 3%,
Activated carbon 5%, dimethylethanolamine 5%, bodied ferric sulfate 20%, acetic acid 10%.
It is preferred that, described coal washing flocculant is water dispersant.
A kind of preparation method of coal washing flocculant, it comprises the following steps：
(1) dimethylethanolamine and acetic acid, are added into deionized water and mix 40~60min, base soln is obtained；
(2) starch and polyacrylamide, are added into deionized water and mix 20~30min, starch milk is obtained；
(3), base soln and starch milk are mixed, aluminium chloride, activated carbon, bodied ferric sulfate are added, according to existing process
Coal washing flocculant is made.
The present invention has the following advantages：It is safe and reliable, equipment and pipeline are not corroded, non-scaling, small toxicity itself can not only
The effect of prior art is enough reached, if effectively by the coal flocculating setting of suspension, and precipitum is loosely uniform, non-agglomerate, is difficult
It is hardened etc., it is most important that the coal and water separate time can also be greatly decreased, improve separative efficiency.
Embodiment
Embodiment one
A kind of coal washing flocculant, it is made up of following weight percents composition：Polyacrylamide 2%, aluminium chloride 55%,
Starch 3%, activated carbon 5%, dimethylethanolamine 5%, bodied ferric sulfate 20%, acetic acid 10%.
A kind of preparation method of coal washing flocculant, it comprises the following steps：
(1) dimethylethanolamine and acetic acid, are added into deionized water and mix 40~60min, base soln is obtained；
(2) starch and polyacrylamide, are added into deionized water and mix 20~30min, starch milk is obtained；
(3), base soln and starch milk are mixed, aluminium chloride, activated carbon, bodied ferric sulfate are added, according to existing process
Coal washing flocculant is made.
Embodiment two
A kind of coal washing flocculant, it is made up of following weight percents composition：Polyacrylamide 2%, aluminium chloride 55%,
Starch 3%, activated carbon 5%, dimethylethanolamine 8%, bodied ferric sulfate 15%, acetic acid 12%.
A kind of preparation method of coal washing flocculant, it comprises the following steps：
(1) dimethylethanolamine and acetic acid, are added into deionized water and mix 40~60min, base soln is obtained；
(2) starch and polyacrylamide, are added into deionized water and mix 20~30min, starch milk is obtained；
(3), base soln and starch milk are mixed, aluminium chloride, activated carbon, bodied ferric sulfate are added, according to existing process
Coal washing flocculant is made.
Embodiment three
A kind of coal washing flocculant, it is made up of following weight percents composition：Polyacrylamide 5%, aluminium chloride 50%,
Starch 3%, activated carbon 5%, dimethylethanolamine 8%, bodied ferric sulfate 20%, acetic acid 12%.
A kind of preparation method of coal washing flocculant, it comprises the following steps：
(1) dimethylethanolamine and acetic acid, are added into deionized water and mix 40~60min, base soln is obtained；
(2) starch and polyacrylamide, are added into deionized water and mix 20~30min, starch milk is obtained；
(3), base soln and starch milk are mixed, aluminium chloride, activated carbon, bodied ferric sulfate are added, according to existing process
Coal washing flocculant is made.
Example IV
A kind of coal washing flocculant, it is made up of following weight percents composition：Polyacrylamide 4%, aluminium chloride 55%,
Starch 6%, activated carbon 5%, dimethylethanolamine 8%, bodied ferric sulfate 20%, acetic acid 2%.
A kind of preparation method of coal washing flocculant, it comprises the following steps：
(1) dimethylethanolamine and acetic acid, are added into deionized water and mix 40~60min, base soln is obtained；
(2) starch and polyacrylamide, are added into deionized water and mix 20~30min, starch milk is obtained；
(3), base soln and starch milk are mixed, aluminium chloride, activated carbon, bodied ferric sulfate are added, according to existing process
Coal washing flocculant is made.
Claims (4)
1. a kind of coal washing flocculant, it is characterised in that：It is made up of following weight percents composition：Polyacrylamide 1%~
5%, aluminium chloride 40~60%, starch 2%~6%, activated carbon 1%~5%, dimethylethanolamine 2%~8%, polyaluminum sulfate
Iron 10%~20%, acetic acid 8%~12%.
2. a kind of coal washing preparation according to claim 1, it is characterised in that：It is into packet by following weight percents
Into：Polyacrylamide 2%, aluminium chloride 55%, starch 3%, activated carbon 5%, dimethylethanolamine 5%, bodied ferric sulfate 20%,
Acetic acid 10%.
3. a kind of coal washing preparation according to claim 1, it is characterised in that：Described coal washing flocculant is water dispersant.
4. a kind of preparation method of the coal washing preparation described in claim 1, it is characterised in that：Comprise the following steps：
(1) dimethylethanolamine and acetic acid, are added into deionized water and mix 40~60min, base soln is obtained；
(2) starch and polyacrylamide, are added into deionized water and mix 20~30min, starch milk is obtained；
(3), base soln and starch milk are mixed, aluminium chloride, activated carbon, bodied ferric sulfate is added, is made according to existing process
Coal washing flocculant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710508486.3A CN107235546A (en) | 2017-06-28 | 2017-06-28 | A kind of coal washing flocculant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710508486.3A CN107235546A (en) | 2017-06-28 | 2017-06-28 | A kind of coal washing flocculant and preparation method thereof |
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| CN107235546A true CN107235546A (en) | 2017-10-10 |
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| CN201710508486.3A Pending CN107235546A (en) | 2017-06-28 | 2017-06-28 | A kind of coal washing flocculant and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386650A (en) * | 2018-04-20 | 2019-10-29 | 上海四奥化工有限公司 | Coal washing polyacrylamide flocculant and preparation method thereof |
| CN112047446A (en) * | 2020-09-07 | 2020-12-08 | 河北蓝江生物环保科技有限公司 | Solid settling agent for treating coal washing wastewater and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963953A (en) * | 2012-11-28 | 2013-03-13 | 大连东泰产业废弃物处理有限公司 | Method for treating coal washing wastewater |
| CN105129946A (en) * | 2015-09-14 | 2015-12-09 | 镇江华立煤质制样设备有限公司 | Efficient coal-washing wastewater treatment agent |
| CN106277250A (en) * | 2016-08-31 | 2017-01-04 | 赵卫平 | A kind of process technique of coal washing waste water |
-
2017
- 2017-06-28 CN CN201710508486.3A patent/CN107235546A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963953A (en) * | 2012-11-28 | 2013-03-13 | 大连东泰产业废弃物处理有限公司 | Method for treating coal washing wastewater |
| CN105129946A (en) * | 2015-09-14 | 2015-12-09 | 镇江华立煤质制样设备有限公司 | Efficient coal-washing wastewater treatment agent |
| CN106277250A (en) * | 2016-08-31 | 2017-01-04 | 赵卫平 | A kind of process technique of coal washing waste water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386650A (en) * | 2018-04-20 | 2019-10-29 | 上海四奥化工有限公司 | Coal washing polyacrylamide flocculant and preparation method thereof |
| CN112047446A (en) * | 2020-09-07 | 2020-12-08 | 河北蓝江生物环保科技有限公司 | Solid settling agent for treating coal washing wastewater and preparation method thereof |
| CN112047446B (en) * | 2020-09-07 | 2022-10-21 | 河北蓝江生物环保科技有限公司 | Solid settling agent for treating coal washing wastewater and preparation method thereof |
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Application publication date: 20171010 |