CN107857242A - A kind of method for improving the water-soluble rate of fertilizer grade MAP - Google Patents
A kind of method for improving the water-soluble rate of fertilizer grade MAP Download PDFInfo
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- CN107857242A CN107857242A CN201711079423.7A CN201711079423A CN107857242A CN 107857242 A CN107857242 A CN 107857242A CN 201711079423 A CN201711079423 A CN 201711079423A CN 107857242 A CN107857242 A CN 107857242A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/28—Ammonium phosphates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/90—Other properties not specified above
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Abstract
The present invention relates to a kind of method for improving the water-soluble rate of fertilizer grade MAP, belong to fertilizer grade MAP production technical field, comprise the following steps：A, mix：Phosphoric acid by wet process and soluble villiaumite are pre-mixed, regulation F/ (Fe, Al) molar ratio is 1.0 ~ 2.5；B, neutralize：In premix carry out ammonia in and, reaction end degree of neutralization control 1.02；C, concentration and drying：Completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.It is an advantage of the invention that：1) F contents in phosphoric acid by wet process are adjusted, in fertilizer grade monoammonium phosphate product, the generation of compound changes than regular meeting, and the quantity that Fe, Al are combined with hydrogen phosphate tails off, and the remaining P overwhelming majority can be with ammonium ion formation NH4 H2PO4, so as to reach the purpose for improving the water-soluble rate of fertilizer grade monoammonium phosphate product；2) in whole fertilizer grade monoammonium phosphate product system, Oil repellent is added seldom, and the application of fertilizer grade MAP will not be negatively affected.
Description
Technical field
The present invention relates to a kind of method for improving the water-soluble rate of fertilizer grade MAP, belongs to fertilizer grade MAP production skill
Art field.
Background technology
MAP is a kind of water soluble quick-acting composite fertilizer, and more than 90% is used as chemical fertilizer, and its total available nutrient content is up to
55%-60%, available phosphorus（AP2O5）With total nitrogen（TN）The ratio of content about 5.44:1, be high-concentration phosphate compound fertilizerses principal item it
One, the product typically does top dressing, is largely used to produce ternary compound fertilizer and BB fertilizer.
In the production process of fertilizer grade monoammonium phosphate product, the impurity such as Fe, Al, Mg can be formed in phosphoric acid by wet process ammonification
" S " compound [(Fe, Al) NH4HPO4F2], " Q " compound [(Fe, Al) NH4(HPO4)2·0.5
H2O], " R " compound [(Fe, Al)3NH4H8(PO4)6·6H2O], " T " compound [(Fe, Al) (NH4)2(HP
O4)2F·nH2O], " U " compound [(Fe, Al) NH4(PO4)2OH·2H2O]、MgHPO4And its complicated chemical combination such as hydrate
Thing, these compound water solubles are low, belong to Chinese holly Soluble phosphorus, wherein metallic element is combined with phosphorus in " Q ", " R ", " T ", " U " compound
Quantity it is more, and negligible amounts that metallic element is combined with phosphorus in " S " compound therefore, in actual industrial production process
Think the water-soluble rate of raising fertilizer grade monoammonium phosphate product, it is necessary to reduce generation " Q ", " R ", " T ", " U " compound.
It is more that China's phosphorus ore is mainly characterized by middle and low grade bauxite, and the few collophane of rich ore is more, and wherein tri- kinds of impurity of Mg, Fe and Al account for
There is larger share, in the production technology of fertilizer grade MAP, these three impurity largely enter in product, can increase phosphorus
The Chinese holly Soluble phosphorus of a sour ammonium product, reduces the water-soluble rate of product, can cause product unqualified when serious.
Number of patent application is 201210203327.X《Industrial monoammonium phosphate coproduction fertilizer grade MAP is produced with raffinate
Method》It is 201210110205.6 with number of patent application《The method that raffinate produces MAP》, disclose a kind of raffinate
Acid is used for the production method of industrial monoammonium phosphate and fertilizer grade MAP, this method neutralized with ammonia after slurry and fluosilicic acid,
The modifying agent such as ammonium fluoride are mixed, and raffinate is purified, and the acid of purification is used for the production of industrial monoammonium phosphate product, raffinate
The filter residue that purification process obtains, in the slurry become reconciled in addition, for the production of fertilizer grade MAP, with the purpose of the method
It is to comprehensively utilize raffinate, improves the yield of industrial monoammonium phosphate and fertilizer grade MAP, but for fertilizer grade
The water solubility of monoammonium phosphate product can cause significant impact, and the water-soluble rate of product substantially reduces, because raffinate purification process obtains
To filter residue contain substantial amounts of iron, aluminium, magnesium addition, after the slurry become reconciled in addition, the thing of substantial amounts of solubility in citric acid can be formed with ammonia
Matter (" S ", " Q ", " R ", " T ", " U "), greatly influence the quality of product.
Number of patent application is 201410673845.7《A kind of MAP and its producer using Wet-process Phosphoric Acid Production
Method》A kind of method for the MAP for producing high water-soluble rate is disclosed, phosphoric acid by wet process is mainly first neutralized to by this method with ammonia
Degree of neutralization is 0.5 ~ 0.8, and a large amount of metal impurities in phosphoric acid by wet process are precipitated out, purer phosphoric acid by wet process is obtained after filtering, then
It is exactly purification of wet process phosphoric acid with the purpose of the method for the preparation of MAP, obtains relatively pure phosphoric acid, so as to improves
The quality of MAP.There is phosphorus ammonium slag subsequent treatment in this method, be only applicable to the low phosphoric acid by wet process of impurity content.
In such scheme, it only considered using villiaumite as cleanser or neutralized using ammonia to metal impurities progress
Precipitate the mode of separation；Influence of the molten thing of different type Chinese holly to the binding capacity of phosphorus is not considered.On the one hand, such scheme is to wet
The purification process of method phosphoric acid can produce a large amount of waste residues, increase processing cost, in particular by side of a large amount of villiaumites as cleanser
Formula, serious fluoride pollution can be brought；On the other hand, due to not considering influence of the molten species type of Chinese holly to the binding capacity of phosphorus, so that can not
The loss amount of purification process phosphorus is controlled, causes total phosphrus reagent to reduce.
At present, the water-soluble rate of domestic fertilizer grade MAP is generally relatively low, and total nutrient is 55% fertilizer grade MAP
Water-soluble rate 76% or so, and total nutrient be the water-soluble rate of 58% fertilizer grade MAP 83% or so, than the fertilizer of certified products
The water-soluble rate of level MAP is high by 2% ~ 3%, and commercially institute is dominant relatively low.Therefore fertilizer grade MAP is improved as far as possible
Water-soluble rate, turn into this area research emphasis.
The content of the invention
To improve the water-soluble rate of fertilizer grade MAP, the invention provides one kind to improve the water-soluble rate of fertilizer grade MAP
Method.
The technical solution adopted in the present invention is：The method for improving the water-soluble rate of fertilizer grade MAP, comprises the following steps：
A, mix：Soluble villiaumite is added in phosphoric acid by wet process, premix is obtained after mixing；The addition of soluble villiaumite with
Fluorine element meter, it is 1.0 ~ 2.5 with the mol ratio of ferro element in phosphoric acid by wet process and aluminium element total amount；
B, neutralize：Ammonia neutralization is carried out to premix, obtains neutralizer, the degree of neutralization of control of reaction end point neutralizer is 1.02；
C, concentration and drying：Completely reacted neutralizer is subjected to heating concentration, drying, then obtains the production of fertilizer grade MAP
Product.
Inventor has found that phosphoric acid by wet process China and foreign countries are hydrogenated with the solubilities such as fluoric acid, ammonium fluoride, fluosilicic acid, sodium fluoride under study for action
The one or more of villiaumite, the water-soluble rate of fertilizer grade MAP can be effectively improved, improve the content of fluorine in phosphoric acid by wet process, fertilizer
The water-soluble rate of material level MAP is constantly raising.By the fertilizer grade MAP of obtained higher water-soluble rate and low water-soluble rate
Fertilizer grade MAP carries out XRD analysis, the results showed that, with the raising of Oil repellent, compound in fertilizer grade MAP
Generation changes than regular meeting, is 20% in phosphoric acid by wet process phosphorus pentoxide mass fraction, when Oil repellent is low（F/(Fe,Al)=
1.0）, " Q " compound generation it is more, " S " compound generate lack, wherein " Q " compound accounts for 1.68%（Mass fraction）, " S " changes
Compound accounts for 1.41%（Mass fraction）；When F contents are high（F/(Fe,Al)=2.3）, what " Q " compound generated lacks, the life of " S " compound
Into it is more, wherein " Q " compound accounts for 0.16%（Mass fraction）, " S " compound accounts for 2.14%（Mass fraction）, (NH4)2FeF5·
H2O accounts for 0.78%（Mass fraction）." Q " compound generation it is more when, more phosphate radicals can be combined, so as to cause fertilizer grade phosphorus
A sour ammonium is water-soluble to be reduced.
Inventor has found under study for action, after adding soluble villiaumite（F/(Fe,Al)=2.3）, the concentration of phosphoric acid by wet process also can
" Q " and " S " compound conversion process is impacted.Phosphoric acid by wet process concentration is relatively low（Phosphorus pentoxide mass fraction is 10%）When,
The generation of " Q " compound is lacked, and " S " compound generates more, wherein " Q " compound accounts for 0.11%（Mass fraction）, " S " compound
Account for 2.28%（Mass fraction）, (NH4)2FeF5·H2O accounts for 0.95%（Mass fraction）；Phosphoric acid by wet process concentration is higher（Phosphorus pentoxide
Mass fraction is 30%）When, " Q " compound generates more, and the generation of " S " compound is lacked, wherein " Q " compound accounts for 1.97%（Matter
Measure fraction）, " S " compound accounts for 1.31%（Mass fraction）, (NH4)2FeF5·H2O accounts for 0.52%（Mass fraction）.
Therefore, appropriate soluble villiaumite is added in phosphoric acid by wet process, can make to change in whole fertilizer grade monoammonium phosphate product
The generation of compound changes than regular meeting, greatly improves the water-soluble rate of fertilizer grade monoammonium phosphate product, while does not influence total phosphorus
Yield.
But villiaumite is added in the slurry in phosphoric acid by wet process ammonia with after, ammonia N-process generates " Q " compound to " S " chemical combination
The speed of thing conversion is extremely restricted, it is necessary to which the villiaumite amount for improving addition carries out precipitation process, just can ensure that product is higher
Water-soluble rate.And added in phosphoric acid by wet process after villiaumite is pre-mixed, then carry out ammonia neutralization, can directly generate S compounds and
(NH4)2FeF5·H2O, so as to substantially increase the water-soluble rate of product, and with the advantage that villiaumite addition is few, cost is low.
For phosphoric acid by wet process prepared by low-grade phosphate ore, under conditions of phosphoric acid by wet process quality is certain, total phosphorus is not reduced
Yield, improve the water-soluble rate of fertilizer grade MAP method yet there are no relevant report.The present invention adds few in phosphoric acid by wet process
The soluble villiaumite of amount, it is the important means for the water-soluble rate for effectively improving fertilizer grade MAP at present, product can be increased and existed
The advantage of in the market.
The beneficial effects of the invention are as follows：1) selection of soluble villiaumite is various in phosphoric acid by wet process, in the production process of reality
In may be selected some cheap fluorine-containing materials, such as：Hydrofluoric acid, ammonium fluoride；2) situation of soluble villiaumite is added in phosphoric acid by wet process
Under so that in fertilizer grade monoammonium phosphate product, the generation of compound changes than regular meeting, NH in product4Fe(HPO4)2It can turn
It is melted into NH4FeHPO4F2(NH4)2FeF5·H2O, remaining phosphorus form NH with ammonium ion4H2PO4, so as to improve fertilizer grade
The water-soluble rate of MAP.Meanwhile after soluble villiaumite is added in phosphoric acid by wet process, the concentration of phosphoric acid by wet process also can to " Q " and
" S " compound conversion process impacts, and when phosphoric acid by wet process concentration is relatively low, the fertilizer grade monoammonium phosphate product prepared is water-soluble
Rate is high；3) in whole fertilizer grade monoammonium phosphate product system, Oil repellent adds seldom, will not be to fertilizer grade MAP
Using being negatively affected.
Brief description of the drawings
Fig. 1 is the process chart of the present invention.
Embodiment
With reference to embodiment, the present invention is further described.
Embodiment 1：
Such as Fig. 1, add soluble villiaumite with phosphoric acid by wet process in accordance with the following methods and produce fertilizer grade MAP：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 20%）Add in 1000mL five mouthfuls of flasks, then to wet
The hydrofluoric acid 2.84g that mass concentration is 40% is added in method phosphoric acid, wherein fluorine element and iron in phosphoric acid by wet process in the hydrofluoric acid added
The mol ratio of element and aluminium element is 1.0, is stirred and evenly mixed；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Embodiment 2：
Soluble villiaumite is added with phosphoric acid by wet process produce fertilizer grade MAP in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 20%）Add in 1000mL five mouthfuls of flasks, then to wet
The fluosilicic acid 4.54g that mass concentration is 30% is added in method phosphoric acid, wherein fluorine element and iron in phosphoric acid by wet process in the fluosilicic acid added
The mol ratio of element and aluminium element is 1.5, is stirred and evenly mixed；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Embodiment 3：
Soluble villiaumite is added with phosphoric acid by wet process produce fertilizer grade MAP in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 20%）Add in 1000mL five mouthfuls of flasks, then to wet
Hydrofluoric acid 1.00g and 1.10g that mass concentration is 40% are added in method phosphoric acid and analyzes pure ammonium fluoride, the hydrofluoric acid and fluorine of middle addition
It is 1.6 to change fluorine element and the mol ratio of ferro element and aluminium element in phosphoric acid by wet process in ammonium, is stirred and evenly mixed；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Embodiment 4：
Soluble villiaumite is added with phosphoric acid by wet process produce fertilizer grade MAP in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 20%）Add in 1000mL five mouthfuls of flasks, then to wet
The hydrofluoric acid 3.83g that mass concentration is 40% is added in method phosphoric acid, wherein fluorine element and iron in phosphoric acid by wet process in the hydrofluoric acid added
The mol ratio of element and aluminium element is 2.0, is stirred and evenly mixed；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Embodiment 5：
Soluble villiaumite is added with phosphoric acid by wet process produce fertilizer grade MAP in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 20%）Add in 1000mL five mouthfuls of flasks, then to wet
The hydrofluoric acid 4.84g that mass concentration is 40% is added in method phosphoric acid, wherein fluorine element and iron in phosphoric acid by wet process in the hydrofluoric acid added
The mol ratio of element and aluminium element is 2.5, is stirred and evenly mixed；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Embodiment 6：
Soluble villiaumite is added with phosphoric acid by wet process produce fertilizer grade MAP in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 10%）Add in 1000mL five mouthfuls of flasks, then to wet
The hydrofluoric acid 2.41g that mass concentration is 40% is added in method phosphoric acid, wherein fluorine element and iron in phosphoric acid by wet process in the hydrofluoric acid added
The mol ratio of element and aluminium element is 1.0, is stirred and evenly mixed；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Embodiment 7：
Soluble villiaumite is added with phosphoric acid by wet process produce fertilizer grade MAP in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 30%）Add in 1000mL five mouthfuls of flasks, then to wet
The hydrofluoric acid 7.26g that mass concentration is 40% is added in method phosphoric acid, wherein fluorine element and iron in phosphoric acid by wet process in the hydrofluoric acid added
The mol ratio of element and aluminium element is 2.5, is stirred and evenly mixed；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Embodiment 8：
Soluble villiaumite is added with phosphoric acid by wet process produce fertilizer grade MAP in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 50%）Add in 1000mL five mouthfuls of flasks, and add and go
It is 30% that ionized water, which is diluted to phosphorus pentoxide mass fraction, then it is 40% to add mass concentration into the phosphoric acid by wet process after dilution
Hydrofluoric acid 5.06g, wherein fluorine element and the mol ratio of ferro element and aluminium element in phosphoric acid by wet process are 2.2 in the hydrofluoric acid added,
Stir and evenly mix；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Comparative example 1
Wet-process Phosphoric Acid Production fertilizer grade MAP is used in accordance with the following methods：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 20%）Add in 1000mL five mouthfuls of flasks；
(2) be passed through in premix ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) completely reacted neutralizer is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
Comparative example 2
Soluble villiaumite is added after being neutralized in accordance with the following methods with phosphoric acid by wet process ammonia and produces fertilizer grade MAP：
(1) 500g phosphoric acid by wet process is taken（Phosphorus pentoxide mass fraction is 20%）Add in 1000mL five mouthfuls of flasks；
(2) be passed through in phosphoric acid by wet process ammonia carry out in and, reaction end degree of neutralization control 1.02；
(3) in neutralizer add mass concentration be 40% hydrofluoric acid 2.84g, wherein in the hydrofluoric acid added fluorine element with it is wet
The mol ratio of ferro element and aluminium element is 1.0 in method phosphoric acid, is stirred and evenly mixed；
(4) mixed liquor mixed is subjected to heating concentration, drying, then obtains fertilizer grade monoammonium phosphate product.
The water-soluble rate of fertilizer grade monoammonium phosphate product, the results are shown in Table 1.
The water-soluble rate data of each embodiment fertilizer grade monoammonium phosphate product of table 1
| Title | Water-soluble rate/% |
| Embodiment 1 | 84.68 |
| Embodiment 2 | 84.73 |
| Embodiment 3 | 84.72 |
| Embodiment 4 | 85.84 |
| Embodiment 5 | 87.76 |
| Embodiment 6 | 88.21 |
| Embodiment 7 | 87.39 |
| Embodiment 8 | 87.01 |
| Comparative example 1 | 81.99 |
| Comparative example 2 | 82.14 |
Claims (4)
1. a kind of method for improving the water-soluble rate of fertilizer grade MAP, comprises the following steps：
A, mix：Soluble villiaumite is added in phosphoric acid by wet process, premix is obtained after mixing；The addition of soluble villiaumite with
Fluorine element meter, it is 1.0 ~ 2.5 with the mol ratio of ferro element in phosphoric acid by wet process and aluminium element total amount；
B, neutralize：Ammonia neutralization is carried out to premix, obtains neutralizer, the degree of neutralization of control of reaction end point neutralizer is 1.02；
C, concentration and drying：Completely reacted neutralizer is subjected to heating concentration, drying, then obtains the production of fertilizer grade MAP
Product.
2. the method according to claim 1 for improving the water-soluble rate of fertilizer grade MAP, it is characterised in that：Soluble villiaumite
Can be the one or more in hydrofluoric acid, ammonium fluoride, fluosilicic acid, sodium fluoride.
3. the method according to claim 1 for improving the water-soluble rate of fertilizer grade MAP, it is characterised in that：Described in step A
Phosphoric acid by wet process in phosphorus pentoxide mass concentration be 10% ~ 30%.
4. the method according to claim 1 for improving the water-soluble rate of fertilizer grade MAP, it is characterised in that：In step A
Phosphoric acid by wet process is first diluted processing, adds soluble villiaumite and is mixed；The terminal of dilution is that phosphorus pentoxide quality is dense
Spend for 10% ~ 30%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368608A (en) * | 2018-10-29 | 2019-02-22 | 贵州川恒化工股份有限公司 | The production method of high-content monoammonium phosphate |
| CN111498809A (en) * | 2020-05-13 | 2020-08-07 | 好科（上海）环保科技有限公司 | From containing H2SiF6Method for recovering hydrofluoric acid from etching waste acid |
| CN116443830A (en) * | 2023-03-17 | 2023-07-18 | 云南天安化工有限公司 | Preparation and application technology of impurity remover for producing monoammonium phosphate ammoniated slurry system by wet-process phosphoric acid |
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|---|---|---|---|---|
| CN102020256A (en) * | 2010-11-22 | 2011-04-20 | 马健 | Method for producing industrial and agricultural monoammonium phosphate and magnesium ammonium phosphate with wet-process phosphoric acid |
| CN102602904A (en) * | 2012-04-16 | 2012-07-25 | 瓮福（集团）有限责任公司 | Method for producing monoammonium phosphate from raffinate acid |
| CN103011122A (en) * | 2012-12-28 | 2013-04-03 | 山东金正大生态工程股份有限公司 | Method for producing water-soluble potassium ammonium phosphate from wet-process phosphoric acid |
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2017
- 2017-11-06 CN CN201711079423.7A patent/CN107857242A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020256A (en) * | 2010-11-22 | 2011-04-20 | 马健 | Method for producing industrial and agricultural monoammonium phosphate and magnesium ammonium phosphate with wet-process phosphoric acid |
| CN102602904A (en) * | 2012-04-16 | 2012-07-25 | 瓮福（集团）有限责任公司 | Method for producing monoammonium phosphate from raffinate acid |
| CN103011122A (en) * | 2012-12-28 | 2013-04-03 | 山东金正大生态工程股份有限公司 | Method for producing water-soluble potassium ammonium phosphate from wet-process phosphoric acid |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368608A (en) * | 2018-10-29 | 2019-02-22 | 贵州川恒化工股份有限公司 | The production method of high-content monoammonium phosphate |
| CN111498809A (en) * | 2020-05-13 | 2020-08-07 | 好科（上海）环保科技有限公司 | From containing H2SiF6Method for recovering hydrofluoric acid from etching waste acid |
| CN111498809B (en) * | 2020-05-13 | 2023-07-25 | 好科（上海）环保科技有限公司 | From H-containing 2 SiF 6 Method for recycling hydrofluoric acid from etching waste acid |
| CN116443830A (en) * | 2023-03-17 | 2023-07-18 | 云南天安化工有限公司 | Preparation and application technology of impurity remover for producing monoammonium phosphate ammoniated slurry system by wet-process phosphoric acid |
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Application publication date: 20180330 |