CN106267679A - A kind of essential harmless disposal method of ardealite - Google Patents
A kind of essential harmless disposal method of ardealite Download PDFInfo
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- CN106267679A CN106267679A CN201610656169.1A CN201610656169A CN106267679A CN 106267679 A CN106267679 A CN 106267679A CN 201610656169 A CN201610656169 A CN 201610656169A CN 106267679 A CN106267679 A CN 106267679A
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- ardealite
- agstone
- essential
- disposal method
- harmless disposal
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the essential harmless disposal method of a kind of ardealite, be characterized mainly in that ardealite and agstone, as inorganic agent, by conveying arrangement, are transported to stirring and evenly mixing device by selection agstone, mixing is transported to slag field after stirring evenly and stores up；The present invention uses agstone as inorganic agent, the mode that the direct hybrid reaction of dry method processes carries out harmlessness disposing, make the ardealite after disposing, it is easy to slag field landfill, the construction to slag field and maintenance cost can be reduced simultaneously, easy and simple to handle, installations and facilities are easy to get, human cost and equipment cost can be greatly reduced, and the comprehensive utilization for ardealite from now on creates conditions.
Description
Technical field
The present invention relates to chemical industry waste disposal field, be specifically related to the essential harmlessness disposing side of a kind of ardealite
Method.
Background technology
Ardealite refers to the solid slag produced when using sulfuric acid treating phosphorite in phosphoric acid production, its main component:
CaSO4·2H2O, additionally contains other impurity multiple.Wherein insoluble impurities: such as apatite quartzy, undecomposed, insoluble
P2O5, eutectic P2O5, fluoride and fluorine, aluminum, the phosphate of magnesium and sulfate；Soluble impurity: such as water solublity P2O5, dissolubility is relatively
Low fluoride and sulfate.Additionally, also containing micro amount of arsenic, copper, zinc, ferrum, manganese, lead, cadmium, hydrargyrum and radioelement in ardealite；
Institute's fluoride, free phosphoric acid, P in ardealite2O5, the impurity such as phosphate be to cause ardealite to cause environment during storing up
The principal element polluted.
Owing to the generation amount of ardealite is big, volume of comprehensive utilization is little, and substantial amounts of ardealite mainly uses slag field land-fill method to enter
Row is disposed.Slag field landfill stabilization mode widely used plastic film mulch seepage control technique, mainly has dry and wet, owing to ardealite is weak acid
Property, slag place table is corrosive, and containing elements such as a small amount of phosphorus, fluorine, arsenic, its landfill stabilization environmental risk is high, investment cost
Greatly.Neutralize with Calx and the method for wet method limestone neutralization for these shortcomings.Calx neutralisation relatively costly；Wet method
In limestone and needs are sized mixing, the technique such as reactive tank, adjustment pH value, precipitate and separate, troublesome poeration, cost is the highest.
As Chinese invention patent application (publication number: CN102058952A, publication date: 2011.5.18) discloses a kind of phosphorus
Gypsum Fibrosum innocent treatment agent, this inorganic agent is Calx, and application weight proportion is Calx: ardealite=0.5-1:100, by pulverized limestone
Join and ardealite stirs evenly and ardealite can be converted into general solid waste, can comprehensively utilize immediately, reduce heap
Field requirement.Although the method is simple to operate, but inorganic agent is relatively costly, is unfavorable for that extensive ardealite processes.Chinese patent
CN1876204A discloses a kind of method that ardealite innocent processes, and is to add water to be modulated into by ardealite to starch again, then replaces
Carrying out vacuum filtration and filter cake adds water washing process, the Gypsum Fibrosum after washing can use dry cinder discharging or wet-process deslagging (to add stone
Lime stone, carbide slag or lime white are neutralized reaction) mode carry out safety store up and comprehensively utilize, the method is mainly for wet
The ardealite of method phosphoric acid by-product, is first modulated into serosity, carry out follow-up filtration, neutralize, the operation such as deposition, trivial operations, can
To find out in wet method limestone and the technique such as needs are sized mixing, reactive tank, adjustment pH value, precipitate and separate, troublesome poeration, cost is the most relatively
High.
Due to Calx neutralize with wet method limestone in and relatively costly, the suitability is the strongest, it is therefore desirable to the basis to ardealite
Matter harmless disposal method is further explored.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of ardealite essence harmless disposal method, select Calx
Stone powder carries out harmlessness disposing as inorganic agent, the mode processed by the direct hybrid reaction of dry method, makes the phosphorus after disposing
Gypsum Fibrosum, it is simple to slag field fills, can reduce the construction to slag field and maintenance cost simultaneously, easy and simple to handle, and installations and facilities are easy to get, energy is big
Width reduces human cost and equipment cost, and the comprehensive utilization for ardealite from now on creates conditions.
The present invention is achieved by the following technical programs:
The essential harmless disposal method of a kind of ardealite, comprises the steps:
(1), take limestone, smash into the agstone that granularity is 0.08mm～0.12mm,
(2), by be conveyed enter slag field ardealite be placed in conveying arrangement, be the most by weight ratio: agstone: phosphorus stone
Cream=0.6～1.3:200, add agstone in ardealite with charging device；
(3), utilize stirring and evenly mixing device, agstone and ardealite are fully mixed, be then delivered to slag field heap
Deposit.
Further, in described step (1), the grinding particle size of agstone is preferably 0.09mm～0.11mm；
Further, in described step (2), the conveyer device of ardealite is belt, and belt speed is 0.7m/s～1.0m/
s；
Further, in described step (2), the charging device of agstone is the tank body of band quantifier, is located at conveying dress
The top put；By the way of at the uniform velocity feeding intake, agstone is added to be conveyed enter slag field ardealite in；
Further, in described step (2), agstone is preferably 0.9～1.1:200 with the weight proportion of ardealite；
Further, in described step (3), stirring and evenly mixing device is located at conveyer device lower end, by agstone and phosphorus stone
After cream is sufficiently mixed uniformly in proportion, then transport.
The beneficial effects of the present invention is: employing, through the agstone of the suitable particle size of screening, can fully mix with ardealite
Close, neutralize the weak acid material in ardealite, make the precipitated solidifications of element such as phosphorus, fluorine, arsenic；Owing to agstone is readily available,
And not increasing the impurity component of ardealite, the comprehensive utilization for ardealite from now on creates conditions.It addition, according to specific ratio,
Agstone uniform feeding is entered in ardealite, nertralizer economical rationality, both met the requirement of harmless treatment, moreover it is possible to reach
Directly settle at one go during transport, it is not necessary to the mode neutralized such as wet method additionally increases equipment, manpower carries out the effect that operates
Really；And simple with dry mixed reaction process, equipment investment is few, easy and simple to handle, does not produce waste water, and operating cost is relatively low,
Agree with very much Large-scale Phosphorus manufacturing enterprise in terms of Solid state fermentation, carry out economization, rationalization, the purpose of environmental protection improvement, be also modern
Rear technology extensive style transfers the target that energy type is pursued to.Comprehensive plastic film mulch cost analysis, this law has bigger cost advantage, right
More there is promotional value in the enterprise that ardealite generation amount is big.
Accompanying drawing explanation
Fig. 1 is the essential harmless disposal method process chart of a kind of ardealite of the present invention
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme is further described, but claimed scope is also
It is not limited to described.
Embodiment 1:
(1), take limestone, smash into the agstone that granularity is 0.09mm～0.11mm；
(2), by be conveyed enter slag field ardealite be placed in conveying arrangement, be the most by weight ratio: agstone: phosphorus stone
Cream=0.7:200, adds agstone in ardealite with charging device；
(3), utilize stirring and evenly mixing device, agstone and ardealite are fully mixed, be then delivered to slag field heap
Deposit.
Embodiment 2:
(1), take limestone, smash into the agstone that granularity is 0.08mm～0.12mm；
(2), by be conveyed enter slag field ardealite be placed in conveying arrangement, be the most by weight ratio: agstone: phosphorus stone
Cream=1.2:200, adds agstone in ardealite with charging device；
(3), utilize stirring and evenly mixing device, agstone and ardealite are fully mixed, be then delivered to slag field heap
Deposit.
Contrast test 1
We select certain batch of original state ardealite to test, and respectively according to embodiments of the invention 1, embodiment 2, China is specially
Embodiment described in profit CN102058952A, Chinese patent CN1876204A, processes ardealite, according to GB5085.3-
2007 " hazardous waste judging standard leaches poisonous substance and differentiates " are detected, and testing result is as shown in the table:
Inspection shows: embodiment 1 and 2, and treated ardealite indices is all far below the regulation in national standard
Requirement.The most of paramount importance inorganic fluoride index comparison reduces more than 90%, full phosphorus index comparison reduce 95% with
On, water miscible phosphorus pentoxide comparison have dropped almost 100%, and water-soluble fluorine comparison have dropped more than 80%, ardealite
In attached water comparison have dropped more than 9%, the former ardealite in acid (pH value is 2～4) can be set to neutrality in place, is fully achieved
The discharge standard of national regulation, has truly accomplished harmless discharge.Enter with patent CN102058952A testing result
Row compares, and the present embodiment has advantage on inorganic fluoride, pH value；CN1876204A is the phosphorus stone of a kind of phosphoric acid by wet process by-product
The method of cream harmless treatment, is characterised by that wet method neutralizes, and process is numerous and diverse, and embodiments of the invention are by agstone and phosphorus
The uniform mixing of Gypsum Fibrosum, reaches the same effect with patent CN1876204A, is even dominant in terms of cadmium, full phosphorus disposal.
Claims (6)
1. the essential harmless disposal method of an ardealite, it is characterised in that: essence harmless disposal method is following steps:
(1), take limestone, smash into agstone；
(2), by be conveyed enter slag field ardealite be placed in conveying arrangement, be the most by weight ratio: agstone: ardealite=
0.6～1.3:200, with charging device, agstone is added in ardealite；
(3), utilize stirring and evenly mixing device, agstone and ardealite are fully mixed, be then delivered to slag field and store up.
A kind of essential harmless disposal method of ardealite, it is characterised in that: described step (1)
In, the size of described agstone is 0.08mm～0.12mm.
A kind of essential harmless disposal method of ardealite, it is characterised in that: described step (2)
In, the conveyer device of ardealite is belt, and belt speed is 0.5m/s-1.2m/s.
A kind of essential harmless disposal method of ardealite, it is characterised in that: described step (2)
In, the charging device of agstone is the tank body of band quantifier, is located at the top of conveyer device；Will by the way of at the uniform velocity feeding intake
Agstone add to be conveyed enter slag field ardealite in；Conveying arrangement is made up of conveyer device and charging device.
A kind of essential harmless disposal method of ardealite, it is characterised in that: described step (2)
In, agstone is preferably 0.9～1.1:200 with the weight proportion of ardealite.
A kind of essential harmless disposal method of ardealite, it is characterised in that: described step (3)
In, stirring and evenly mixing device is located at conveyer device lower end, after agstone and ardealite being sufficiently mixed in proportion uniformly, then carries out
Transport.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656169.1A CN106267679A (en) | 2016-08-11 | 2016-08-11 | A kind of essential harmless disposal method of ardealite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610656169.1A CN106267679A (en) | 2016-08-11 | 2016-08-11 | A kind of essential harmless disposal method of ardealite |
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| CN106267679A true CN106267679A (en) | 2017-01-04 |
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| CN201610656169.1A Pending CN106267679A (en) | 2016-08-11 | 2016-08-11 | A kind of essential harmless disposal method of ardealite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112808736A (en) * | 2020-12-21 | 2021-05-18 | 贵州昊华工程技术有限公司 | Purification and harmless treatment method of phosphogypsum |
| CN112934906A (en) * | 2019-12-11 | 2021-06-11 | 西南科技大学 | Method for innocent treatment of phosphorus tailings and phosphogypsum by burning raw materials |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733374A (en) * | 2004-08-12 | 2006-02-15 | 刘元锡 | Application of lime in phosphogypsum innocent treatment |
| CN1876204A (en) * | 2006-07-06 | 2006-12-13 | 上海南化水处理技术工程有限公司 | Ardealite innocent treatment method |
| CA2379810C (en) * | 1999-07-16 | 2008-07-08 | University Of New Hampshire | Phosphate mineral-based reactive barrier containment system |
| CN102058952A (en) * | 2009-11-14 | 2011-05-18 | 孔敏 | Ardealite harmless treating agent |
| CN204999808U (en) * | 2015-07-28 | 2016-01-27 | 河南聚能新型建材有限公司 | Preceding pretreatment systems of sediment is arranged to phosphate fertilizer plant's ardealite |
-
2016
- 2016-08-11 CN CN201610656169.1A patent/CN106267679A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2379810C (en) * | 1999-07-16 | 2008-07-08 | University Of New Hampshire | Phosphate mineral-based reactive barrier containment system |
| CN1733374A (en) * | 2004-08-12 | 2006-02-15 | 刘元锡 | Application of lime in phosphogypsum innocent treatment |
| CN1876204A (en) * | 2006-07-06 | 2006-12-13 | 上海南化水处理技术工程有限公司 | Ardealite innocent treatment method |
| CN102058952A (en) * | 2009-11-14 | 2011-05-18 | 孔敏 | Ardealite harmless treating agent |
| CN204999808U (en) * | 2015-07-28 | 2016-01-27 | 河南聚能新型建材有限公司 | Preceding pretreatment systems of sediment is arranged to phosphate fertilizer plant's ardealite |
Non-Patent Citations (1)
| Title |
|---|
| 饶箭星: "磷石膏的处理与综合利用", 《化学与生物工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112934906A (en) * | 2019-12-11 | 2021-06-11 | 西南科技大学 | Method for innocent treatment of phosphorus tailings and phosphogypsum by burning raw materials |
| CN112808736A (en) * | 2020-12-21 | 2021-05-18 | 贵州昊华工程技术有限公司 | Purification and harmless treatment method of phosphogypsum |
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Application publication date: 20170104 |
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