CN103252289A - Method for preparing finished coal ash by decarburizing wet-discharged coal ash via double size mixing - Google Patents
Method for preparing finished coal ash by decarburizing wet-discharged coal ash via double size mixing Download PDFInfo
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- CN103252289A CN103252289A CN2013100936303A CN201310093630A CN103252289A CN 103252289 A CN103252289 A CN 103252289A CN 2013100936303 A CN2013100936303 A CN 2013100936303A CN 201310093630 A CN201310093630 A CN 201310093630A CN 103252289 A CN103252289 A CN 103252289A
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Abstract
The invention provides a method for preparing finished coal ash by decarburizing wet-discharged coal ash via double size mixing. The method includes: first-time size mixing in a mechanical stirring bucket: performing high-concentration size mixing according to the weight ratio at 0.9-1:1 between water and the coal ash, simultaneously adding collecting agent in the coal ash according to the proportion of 0.2-0.3kg of collecting agent for every ton of coal ash, and stirring evenly to prepare a mixture; and second-time size mixing: allowing the mixture prepared by the first-time size mixing to automatically flow into a pneumatic stirring bucket, stirring again under low-concentration condition with the liquid-solid ratio at 9:0.8-1.2 to reach the optimum floating concentration, and adding foaming agent in an outlet pipe of the pneumatic stirring bucket according to the agent adding proportion of 2.0-2.5kg of foaming agent in every ton of coal ash. The wet-discharged coal ash is decarburized via double size mixing, reduction of agent consumption is realized, and compared with the prior art, the method has the advantages that one third of the collecting agent can be saved, one fifth of the foaming agent can be saved, and decarburizing effect is good, and loss on ignition is not larger than 4%.
Description
Technical field
The present invention relates to the wet-discharged coal ash decarburization of sizing mixing of a kind of secondary and produce the method for finished powder coal ash, belong to the flyash method and technology field of producing.
Background technology
It is only once to size mixing that finished powder coal ash method commonly used is produced in present wet-discharged coal ash decarburization, and once sizing mixing exists following shortcoming: the consumption of medicament is big, and the effect of decarburization is relatively poor, and loss on ignition usually 〉=5%.
Summary of the invention
The objective of the invention is in order to solve the problem that prior art exists, be that to produce finished powder coal ash method commonly used be only once to size mixing in present wet-discharged coal ash decarburization, once size mixing and have following shortcoming: the consumption of medicament is big, and the effect of decarburization is relatively poor, and loss on ignition usually 〉=5%.And then provide the wet-discharged coal ash decarburization of sizing mixing of a kind of secondary to produce the method for finished powder coal ash.
The objective of the invention is to be achieved through the following technical solutions:
The method of finished powder coal ash is produced in the wet-discharged coal ash decarburization of sizing mixing of a kind of secondary, step is as follows: one, once size mixing: adopt the diving shell pump that an ash flyash is delivered to the mechanical agitation bucket, in the mechanical agitation bucket, once size mixing, according to water: flyash=0.9～1.1: 1 weight ratio is carried out high concentration pulping and is added collecting agent simultaneously, addition is that flyash per ton adds 0.2～0.3 kilogram of collecting agent, stirs and makes mixture;
Two, secondary is sized mixing: flow in the strength agitator certainly through a stirred mixture, at liquid-solid ratio (water: flyash, weight ratio) be under 9: 0.8～1.2 the low consistency conditions, stir again, reach into floating concentration, discharge nozzle place at the strength agitator adds 2.0～2.5 kilograms medicament adding proportion interpolation foaming agent according to flyash per ton, enters flotation column then and carries out flotation.
The method that wet-discharged coal ash decarburization of the present invention adopts secondary to size mixing has realized the minimizing of reagent consumption, compared with prior art, can save collecting agent 1/3rd, saves foaming agent 1/5th, has reduced the cost of decarburization; Improved the effect of decarburization, loss on ignition≤4%.
The specific embodiment
Below with the present invention is described in further detail: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, has provided detailed embodiment, but protection scope of the present invention is not limited to following embodiment.
The method of finished powder coal ash is produced in the wet-discharged coal ash decarburization of sizing mixing of the related a kind of secondary of present embodiment, and step is as follows:
One, once sizes mixing: adopt the diving shell pump that an ash flyash is delivered to the mechanical agitation bucket, in the mechanical agitation bucket, once size mixing, according to water: flyash=0.9～1.1: 1 weight ratio is carried out high concentration pulping and is added collecting agent simultaneously, addition is that flyash per ton adds 0.2～0.3 kilogram of collecting agent, stirs and makes mixture;
Two, secondary is sized mixing: flow in the strength agitator certainly through a stirred mixture, at liquid-solid ratio (water: flyash, weight ratio) be under 9: 0.8～1.2 the low consistency conditions, stir again, reach the best floating concentration of going into, discharge nozzle place at the strength agitator adds 2.0～2.5 kilograms medicament adding proportion interpolation foaming agent according to flyash per ton, enters flotation column then and carries out flotation.
Described employing diving shell pump cuts slightly through sieve bend before an ash flyash is delivered to the mechanical agitation bucket.
Describedly once size mixing water: the weight ratio of flyash=1: 1.
Describedly once size mixing, flyash per ton adds 0.25 kilogram of collecting agent.
During described secondary was sized mixing, liquid-solid ratio was 9: 1.
During described secondary was sized mixing, flyash per ton added 2.25 kilograms of foaming agents.
Described collecting agent is 0# diesel oil.
Described foaming agent is secondary octanol.
The above; only be the preferable specific embodiment of the present invention; these specific embodiment all are based on the different implementations under the general idea of the present invention; and protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (8)
1. the method for finished powder coal ash is produced in the secondary wet-discharged coal ash decarburization of sizing mixing, it is characterized in that,
One, once sizes mixing: adopt the diving shell pump that an ash flyash is delivered to the mechanical agitation bucket, in the mechanical agitation bucket, once size mixing, according to water: flyash=0.9～1.1: 1 weight ratio is carried out high concentration pulping and is added collecting agent simultaneously, addition is that flyash per ton adds 0.2～0.3 kilogram of collecting agent, stirs and makes mixture;
Two, secondary is sized mixing: flow in the strength agitator certainly through a stirred mixture, be under 9: 0.8～1.2 the low consistency conditions in liquid-solid ratio, stir again, reach into floating concentration, discharge nozzle place at the strength agitator adds 2.0～2.5 kilograms medicament adding proportion interpolation foaming agent according to flyash per ton, enters flotation column then and carries out flotation.
2. the method for finished powder coal ash is produced in the secondary according to claim 1 wet-discharged coal ash decarburization of sizing mixing, and it is characterized in that, described employing diving shell pump is delivered to an ash flyash and passed through sieve bend before the mechanical agitation bucket and cut slightly.
3. the method for finished powder coal ash is produced in the secondary according to claim 1 wet-discharged coal ash decarburization of sizing mixing, it is characterized in that, describedly once sizes mixing water: the weight ratio of flyash=1: 1.
4. the method for finished powder coal ash is produced in the secondary according to claim 1 wet-discharged coal ash decarburization of sizing mixing, it is characterized in that, describedly once sizes mixing, and flyash per ton adds 0.25 kilogram of collecting agent.
5. the method for finished powder coal ash is produced in the secondary according to claim 1 wet-discharged coal ash decarburization of sizing mixing, and it is characterized in that during described secondary was sized mixing, liquid-solid ratio was 9: 1.
6. the method for finished powder coal ash is produced in the secondary according to claim 1 wet-discharged coal ash decarburization of sizing mixing, and it is characterized in that during described secondary was sized mixing, flyash per ton added 2.25 kilograms of foaming agents.
7. the method for finished powder coal ash is produced in the wet-discharged coal ash decarburization of sizing mixing according to claim 1 or 4 described secondaries, it is characterized in that described collecting agent is 0# diesel oil.
8. the method for finished powder coal ash is produced in the wet-discharged coal ash decarburization of sizing mixing according to claim 1 or 6 described secondaries, it is characterized in that described foaming agent is secondary octanol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100936303A CN103252289A (en) | 2013-03-22 | 2013-03-22 | Method for preparing finished coal ash by decarburizing wet-discharged coal ash via double size mixing |
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| CN2013100936303A CN103252289A (en) | 2013-03-22 | 2013-03-22 | Method for preparing finished coal ash by decarburizing wet-discharged coal ash via double size mixing |
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| CN103252289A true CN103252289A (en) | 2013-08-21 |
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| CN2013100936303A Pending CN103252289A (en) | 2013-03-22 | 2013-03-22 | Method for preparing finished coal ash by decarburizing wet-discharged coal ash via double size mixing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752421A (en) * | 2014-01-26 | 2014-04-30 | 河南天罡实业有限公司 | Method for flotation of cobalt in fly ash |
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| JP2007054773A (en) * | 2005-08-26 | 2007-03-08 | Mitsui Eng & Shipbuild Co Ltd | Unburned carbon removal method in coal ash |
| CN201329313Y (en) * | 2008-11-19 | 2009-10-21 | 灵宝市金源矿业有限责任公司 | Copper-sulphur ore floatation system |
| CN102872970A (en) * | 2012-10-29 | 2013-01-16 | 云南华联锌铟股份有限公司 | Process for improving quality and reducing impurities of tin stone multi-metal sulfide ore tin ore concentrate and combined equipment |
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- 2013-03-22 CN CN2013100936303A patent/CN103252289A/en active Pending
Patent Citations (3)
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| JP2007054773A (en) * | 2005-08-26 | 2007-03-08 | Mitsui Eng & Shipbuild Co Ltd | Unburned carbon removal method in coal ash |
| CN201329313Y (en) * | 2008-11-19 | 2009-10-21 | 灵宝市金源矿业有限责任公司 | Copper-sulphur ore floatation system |
| CN102872970A (en) * | 2012-10-29 | 2013-01-16 | 云南华联锌铟股份有限公司 | Process for improving quality and reducing impurities of tin stone multi-metal sulfide ore tin ore concentrate and combined equipment |
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| CN103752421A (en) * | 2014-01-26 | 2014-04-30 | 河南天罡实业有限公司 | Method for flotation of cobalt in fly ash |
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Application publication date: 20130821 |