CN104874579A - Coal waste comprehensive treatment method - Google Patents
Coal waste comprehensive treatment method Download PDFInfo
- Publication number
- CN104874579A CN104874579A CN201410068989.XA CN201410068989A CN104874579A CN 104874579 A CN104874579 A CN 104874579A CN 201410068989 A CN201410068989 A CN 201410068989A CN 104874579 A CN104874579 A CN 104874579A
- Authority
- CN
- China
- Prior art keywords
- coal waste
- liquid
- coal
- separation
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003245 coal Substances 0.000 title claims abstract description 42
- 239000002699 waste material Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 238000013467 fragmentation Methods 0.000 claims abstract description 13
- 238000006062 fragmentation reaction Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 25
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 238000002144 chemical decomposition reaction Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000013043 chemical agent Substances 0.000 abstract description 2
- 239000010881 fly ash Substances 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a coal waste comprehensive treatment method, which is suitable for gangue, slime and fly ash. The separation is thorough without pollution, and chemical agents can be recovered and reused. The steps include fragmentation, stirring, separation, reduction and separation of the waste. The coal waste comprehensive treatment method is a main approach of the coal waste comprehensive utilization.
Description
Technical field
The invention belongs to coal waste and recycle processing technology field, be specifically related to a kind of coal waste integrated conduct method.
Background technology
Along with the technical development of China, it serves to show there has been very high utilization to the coal of China, the existing Quality advance to coal just relies on the equipment of coal separation, has emerged in large numbers a large amount of coal preparation plants.Except having selected many cleaned coal, a large amount of mixed coal (ash about 40%) and coal waste (ash about 65%) have also been there is simultaneously.Mixed coal can only be used in power plant, these aspects of boiler use, and coal waste has become discarded object.The cleaning unit not being us is bad, but when raw coal produces with regard to self with partial impurities, present cleaning unit is exactly by high impurity portion separately; These impurity is made up of magnesium, aluminium, silicon exactly, so wet concentration equipment, pneumatic separator all can only be discharged, is without any change to ash.Also there is many changes in our cleaning unit, from the fragmentation of comprehensive fragmentation rectification for thin system, Here it is in order to improve selected precision, but this part composition magnesium, aluminium, silicon, to ash still without any change.Also have the research to floating agent, but these medicaments for the process of attritive powder (magnesium, aluminium, silicon), and can only there is impact to equipment corruption simultaneously.
Summary of the invention
The object of this invention is to provide a kind of organic efficiency high, cost is low, the coal waste integrated conduct method of environmentally safe.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of coal waste integrated conduct method, comprises the following steps:
(1), by coal waste Mechanical Crushing;
(2), the coal waste after fragmentation being milled to particle diameter is 0.1-0.2mm;
(3) at normal pressure 100-110 DEG C, by the coal waste after fragmentation add sulfuric acid or hydrochloric acid stirring 1-2h, solid-to-liquid ratio is 4:3;
(4), machinery is separated;
(5), precipitate, Separation of Solid and Liquid;
(6), in liquid, reducing agent is added;
(7), Separation of Solid and Liquid.
Preferably, carry out also carrying out Chemical Decomposition while machinery is separated to discarded object in machinery in described step (4).
Preferably, the reducing agent in described step (6) is organic reducing agent.
Preferably, the liquid after being separated in described step (7) is back to step (3) and recycles.
Compared with prior art, tool of the present invention has the following advantages:
The present invention is applicable to gangue, coal slime, flyash, is separated thoroughly, pollution-free, the recyclable recycling of chemical agent.
Detailed description of the invention
Below in conjunction with description of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.
Embodiment 1:
Coal waste integrated conduct method, comprises the following steps:
(1), by coal waste Mechanical Crushing;
(2), the coal waste after fragmentation being milled to particle diameter is 0.1mm;
(3) at normal pressure 100 DEG C, by the coal waste after fragmentation add sulfuric acid or hydrochloric acid stirring 1h, solid-to-liquid ratio is 4:3;
(4), machinery is separated and also carries out Chemical Decomposition simultaneously;
(5), precipitate, Separation of Solid and Liquid;
(6), in liquid, reducing agent is added;
(7), Separation of Solid and Liquid, the liquid after separation is back to step (3) and recycles.
Embodiment 2:
Coal waste integrated conduct method, comprises the following steps:
(1), by coal waste Mechanical Crushing;
(2), the coal waste after fragmentation being milled to particle diameter is 0.15mm;
(3) at normal pressure 105 DEG C, by the coal waste after fragmentation add sulfuric acid or hydrochloric acid stirring 1.5h, solid-to-liquid ratio is 4:3;
(4), machinery is separated and also carries out Chemical Decomposition simultaneously;
(5), precipitate, Separation of Solid and Liquid;
(6), in liquid, reducing agent is added;
(7), Separation of Solid and Liquid, the liquid after separation is back to step (3) and recycles.
Embodiment 3:
Coal waste integrated conduct method, comprises the following steps:
(1), by coal waste Mechanical Crushing;
(2), the coal waste after fragmentation being milled to particle diameter is 0.2mm;
(3) at normal pressure 110 DEG C, by the coal waste after fragmentation add sulfuric acid or hydrochloric acid stirring 2h, solid-to-liquid ratio is 4:3;
(4), machinery is separated and also carries out Chemical Decomposition simultaneously;
(5), precipitate, Separation of Solid and Liquid;
(6), in liquid, reducing agent is added;
(7), Separation of Solid and Liquid, the liquid after separation is back to step (3) and recycles.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done all should be included within protection scope of the present invention.
Claims (4)
1. a coal waste integrated conduct method, comprises the following steps:
(1), by coal waste Mechanical Crushing;
(2), the coal waste after fragmentation being milled to particle diameter is 0.1-0.2mm;
(3) at normal pressure 100-110 DEG C, by the coal waste after fragmentation add sulfuric acid or hydrochloric acid stirring 1-2h, solid-to-liquid ratio is 4:3;
(4), machinery is separated;
(5), precipitate, Separation of Solid and Liquid;
(6), in liquid, reducing agent is added;
(7), Separation of Solid and Liquid.
2. a kind of coal waste integrated conduct method according to claim 1, is characterized in that: carry out also carrying out Chemical Decomposition while machinery is separated to discarded object in machinery in described step (4).
3. a kind of coal waste integrated conduct method according to claim 1, is characterized in that: the reducing agent in described step (6) is organic reducing agent.
4. a kind of coal waste integrated conduct method according to claim 1, is characterized in that: the liquid after being separated in described step (7) is back to step (3) and recycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068989.XA CN104874579A (en) | 2014-02-27 | 2014-02-27 | Coal waste comprehensive treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068989.XA CN104874579A (en) | 2014-02-27 | 2014-02-27 | Coal waste comprehensive treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104874579A true CN104874579A (en) | 2015-09-02 |
Family
ID=53942404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410068989.XA Pending CN104874579A (en) | 2014-02-27 | 2014-02-27 | Coal waste comprehensive treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104874579A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5688999A (en) * | 1996-01-26 | 1997-11-18 | Lignotech Usa, Inc. | Production of oxidized humic acids by an oxygen-alkali process |
| CN1663986A (en) * | 2005-02-06 | 2005-09-07 | 方宁 | A technology for producing fulvic acid from coal |
| CN102093434A (en) * | 2011-01-04 | 2011-06-15 | 新疆双龙腐植酸有限公司 | Production method of acid-soluble potassium humate |
| CN102178316A (en) * | 2011-04-08 | 2011-09-14 | 方宁 | Technology for producing natural humic acid living body health strengthening beverage by utilizing coal |
| CN102181064A (en) * | 2011-04-13 | 2011-09-14 | 方宁 | Technology for producing high-purity humate by using coal |
-
2014
- 2014-02-27 CN CN201410068989.XA patent/CN104874579A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5688999A (en) * | 1996-01-26 | 1997-11-18 | Lignotech Usa, Inc. | Production of oxidized humic acids by an oxygen-alkali process |
| CN1663986A (en) * | 2005-02-06 | 2005-09-07 | 方宁 | A technology for producing fulvic acid from coal |
| CN102093434A (en) * | 2011-01-04 | 2011-06-15 | 新疆双龙腐植酸有限公司 | Production method of acid-soluble potassium humate |
| CN102178316A (en) * | 2011-04-08 | 2011-09-14 | 方宁 | Technology for producing natural humic acid living body health strengthening beverage by utilizing coal |
| CN102181064A (en) * | 2011-04-13 | 2011-09-14 | 方宁 | Technology for producing high-purity humate by using coal |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |
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| RJ01 | Rejection of invention patent application after publication |