CN108117053A - It is a kind of to handle hardened soil with phytase so as to optimize the method for ardealite preparation process - Google Patents
It is a kind of to handle hardened soil with phytase so as to optimize the method for ardealite preparation process Download PDFInfo
- Publication number
- CN108117053A CN108117053A CN201711401766.0A CN201711401766A CN108117053A CN 108117053 A CN108117053 A CN 108117053A CN 201711401766 A CN201711401766 A CN 201711401766A CN 108117053 A CN108117053 A CN 108117053A
- Authority
- CN
- China
- Prior art keywords
- phytase
- ardealite
- liquid
- phosphoric acid
- hardened soil
- 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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Classifications
-
- 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
- C01B25/01—Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds
-
- 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
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
- C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- 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
- C01P2006/80—Compositional purity
Abstract
The invention discloses a kind of methods for introducing phytase and producing ardealite, it being capable of special Hydrolysis of Phytic Acid using phytase, discharge the principle of phosphate moiety, make full use of hardened soil Central Plains this excessive phosphate radical and calcium ion, existing ardealite reparation technology is not changed simultaneously, cost is saved for the phosphoric acid leach step in ardealite production process, is reduced environmental pollution simultaneously.
Description
Technical field
The invention belongs to ardealite technical field of producing, and in particular to it is a kind of with phytase handle hardened soil so as to
Optimize the method for existing ardealite preparation process.
Background technology
Existing ardealite production technology, especially Wet Processes of Phosphoric Acid need to extract phosphorus ore, it is necessary to expend using sulfuric acid
Substantial amounts of phosphoric acid and calcium dihydrogen phosphate, this occupies substantial amounts of cost in production.
Soil hardening is the problem of agriculture field soil is common, and one of principle is the soil granular in the farming of crop
Structure is that electronegative soil clay particle and organic matter are formed by the polyvalent cation connection of positively charged.Polyvalent cation is with key
Soil particle is connected into bulky grain and forms soil aggregate structure by bridge form.Cation in soil using the calcium and magnesium ion of divalent as
Main, when phosphate fertilizer is excessively applied into soil, the cations such as calcium, magnesium combine to form indissoluble in the phosphate anion and soil in phosphate fertilizer
Acid phosphate, and phosphate fertilizer often includes calcium ion in itself, so that phosphate fertilizer utilization efficiency substantially reduces in soil, while needs again
More phosphate fertilizer are used, vicious circle is caused to cause soil hardening.
Phytic acid, i.e. phytic acid are a kind of metallo-chelates, are typically the phosphorus on calcium ion or magnesium ion sequestration phytic acid
Acid group forms network molecule；And phytase can discharge phosphate radical and metal sun more specifically by the phosphatide key on phytic acid
Ion, action principle is as shown in Figure 1.
It is related to the patent application document of ardealite production method including as follows：Application No. CN201610044451.4
《The method for producing high-quality phosphoric acid and high-quality ardealite containing rare earth phosphate rock with regeneration phosphoric acid leaching》The defects of above-mentioned patented technology is
The technical barrier of the usage amount of phosphoric acid and calcium dihydrogen phosphate cannot be solved how to reduce.
The content of the invention
Present invention seek to address that one of technical problem in the prior art, for this purpose, it is an object of the present invention to
It provides and a kind of handles hardened soil with phytase so as to optimize the technology of ardealite preparation process, it is intended to be reduced for existing process
The usage amount of phosphoric acid and calcium dihydrogen phosphate, that is, save cost, has reached the utilization of waste, has decreased environmental pollution.
It should be noted that the present invention is the following discovery based on inventor and completes：
According to an aspect of the present invention, with phytase hardened soil is handled so as to optimizing phosphorus stone the present invention provides a kind of
The method of cream preparation process, specifically includes following steps：
(1) will contain after rare earth phosphate rock mixes with hardened soil, by solid-liquid volume ratio 1:10 add in water, and mixed liquor is made；
(2) phytase is added in the mixed liquor into step (1), be uniformly mixed, static 30 minutes；
(3) flocculant is added in the mixed liquor into step (2), separation of solid and liquid, wherein liquid portion enter biphosphate
Calcium solution storage tank, solid portion add in phosphoric acid extraction；
(4) liquid mixed in step (3) with biphosphate calcium solution and the liquid extracted through phosphoric acid are transferred to together
Retort；
(5) concentrated sulfuric acid is added in into retort to be reacted, 0.5 it is small when after, with filter press press filtration, obtain ardealite and
Regenerate phosphoric acid；
(6) the regeneration phosphoric acid that obtains imports phosphoric acid storage tank, repeats step (3), so repeatedly, you can obtain ardealite into
Product.
In above method step (1), the rare earth phosphate rock is in mass ratio 5 with hardened soil mixed proportion:1 mixing.
In above method step (1), the solid-liquid volume ratio is 1:5 to 1:10.
In above method step (2), the additive amount of the phytase is phytase and the mass ratio 1 of hardened soil:500 to
1:1000。
In above method step (3), the flocculant is anionic polyacrylamide.
In above method step (5), the mass fraction of the concentrated sulfuric acid is 98%, and reaction temperature is 60 DEG C.
In above method step (6), the purity of the ardealite finished product is more than 97%.
Compared with prior art, the present invention has the following advantages：
1. take full advantage of the calcium phosphorous compound in hardened soil, so as to reduce making for phosphoric acid and calcium dihydrogen phosphate
With having saved production cost；
2. material is derived from hardened soil and microbial metabolic products, the phytic acid in soil and similar chemical combination have both been hydrolyzed
Object, and release by the metal cation of its chelating and be difficult to be utilized because taking full advantage of hardened soil during soil hardening
Surcharge improves environment.
Description of the drawings
Fig. 1 is the hydrolysis principle of phytic acid.
Fig. 2 is the process flow diagram of the method for the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail.The embodiments described below with reference to the accompanying drawings are exemplary, only
For explaining the present invention, and it is not considered as limiting the invention.
Embodiment 1
By hardened soil and rare earth phosphate rock according to mass ratio 5:Hydrolytic decomposition pot is put into after 1 weighing, according to volume ratio 1:10 add in
Water is sufficiently stirred, and after mixing, adds in phytase, reaction temperature is 40-60 DEG C, is preferably 50 DEG C, and the reaction time is 30 minutes.
Reaction solution is stood 30 minutes after reaction, after being layered its solid-liquid, tank bottom valve is opened, by liquid portion mistake
It filters out and, import calcium dihydrogen phosphate storage tank, solid portion is stayed in hydrolytic decomposition pot.
Phosphoric acid is imported into hydrolytic decomposition pot, is extracted, process conditions formula control phosphoric acid and the residual solid in tank of reaction
Solid-liquid mass ratio is 1:8 to 1:15, reaction temperature be 30 DEG C to 80 DEG C, the reaction time for 2 hours to 6 it is small when；One section of extraction is anti-
After answering, flocculant polyacrylamide is added in slurry, clear liquid is made to be separated with slurry, clear liquid is directed into calcium dihydrogen phosphate storage
In tank.
Liquid in storage tank is imported into retort, adds in the concentrated sulfuric acid of mass fraction 98%, the concentrated sulfuric acid and calcium dihydrogen phosphate
Reaction condition control in temperature 50 C to 70 DEG C, be preferably 60 DEG C, the reaction time for 2 hours to 4 it is small when, make sulfate radical with it is molten
Free calcium ions in liquid are reacted, and obtain the phosphoric acid containing ardealite and rare earth；Finally, the emulsion containing ardealite,
By filter press press filtration, the ardealite that purity is more than 97% is obtained, liquid portion imports phosphoric acid storage tank, carries out the anti-of next round
It should.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (7)
1. a kind of handle hardened soil so as to optimize the method for ardealite preparation process with phytase, which is characterized in that including with
Lower step：
(1) will contain after rare earth phosphate rock mixes with hardened soil, by solid-liquid volume ratio 1:10 add in water, and mixed liquor is made；
(2) phytase is added in the mixed liquor into step (1), be uniformly mixed, stand 30 minutes；
(3) flocculant is added in the mixed liquor into step (2), it is molten to enter calcium dihydrogen phosphate for separation of solid and liquid, wherein liquid portion
Liquid storage tank, solid portion add in phosphoric acid extraction, and clear liquid imports calcium dihydrogen phosphate storage tank after extraction；
(4) liquid in calcium dihydrogen phosphate storage tank in step (3) is transferred to retort together；
(5) into retort add in the concentrated sulfuric acid reacted, 0.5 it is small when after, with filter press press filtration, obtain ardealite and regeneration
Phosphoric acid；
(6) the regeneration phosphoric acid obtained imports phosphoric acid storage tank, repeats step (3), so repeatedly, you can obtain ardealite finished product.
2. the method as described in claim 1, it is characterised in that in step (1), the rare earth phosphate rock and hardened soil mixing ratio
Example is in mass ratio 5:1 mixing.
3. the method as described in claim 1, it is characterised in that in step (1), the solid-liquid volume ratio is 1:5 to 1:10.
4. the method as described in claim 1, it is characterised in that in step (2), the additive amount of the phytase for phytase with
The mass ratio 1 of hardened soil:500 to 1:1000.
5. the method as described in claim 1, it is characterised in that in step (3), the flocculant is anionic polyacrylamide.
6. the method as described in claim 1, it is characterised in that in step (5), the mass fraction of the concentrated sulfuric acid is 98%, instead
It is 60 DEG C to answer temperature.
7. the method as described in claim 1, it is characterised in that in step (6), the purity of the ardealite finished product for 97% with
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401766.0A CN108117053A (en) | 2017-12-22 | 2017-12-22 | It is a kind of to handle hardened soil with phytase so as to optimize the method for ardealite preparation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401766.0A CN108117053A (en) | 2017-12-22 | 2017-12-22 | It is a kind of to handle hardened soil with phytase so as to optimize the method for ardealite preparation process |
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| Publication Number | Publication Date |
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| CN108117053A true CN108117053A (en) | 2018-06-05 |
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| CN201711401766.0A Pending CN108117053A (en) | 2017-12-22 | 2017-12-22 | It is a kind of to handle hardened soil with phytase so as to optimize the method for ardealite preparation process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3854221A1 (en) * | 2020-01-21 | 2021-07-28 | Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | Method of providing phosphate from a phytate-containing biomass, phytate and phosphate reduced biomass, and uses thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1595793A1 (en) * | 1987-10-20 | 1990-09-30 | Ленинградский Государственный Научно-Исследовательский И Проектный Институт Основной Химической Промышленности | Method of producing phosphoric acid |
| CN1876662A (en) * | 2005-06-10 | 2006-12-13 | 庞竖强 | Phytic acid production process |
| CN105347711A (en) * | 2015-10-26 | 2016-02-24 | 贵州腾峰科技有限责任公司 | Modified phosphogypsum and preparation method thereof |
| CN105523533A (en) * | 2016-01-22 | 2016-04-27 | 贵州能矿织金磷化工有限公司 | Method for preparing high-quality phosphoric acid and high-quality phosphogypsum by leaching rare-earth-containing phosphorite with reproducible phosphoric acid |
| CN105731513A (en) * | 2016-01-22 | 2016-07-06 | 贵州能矿织金磷化工有限公司 | Method for preparing rare earth oxide by leaching rare earth-containing phosphorite from regenerated phosphoric acid |
| CN107400026A (en) * | 2016-05-20 | 2017-11-28 | 陈海鸿 | A kind of multienzyme series fertilizer and preparation method and its vacuum fermentation device |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1595793A1 (en) * | 1987-10-20 | 1990-09-30 | Ленинградский Государственный Научно-Исследовательский И Проектный Институт Основной Химической Промышленности | Method of producing phosphoric acid |
| CN1876662A (en) * | 2005-06-10 | 2006-12-13 | 庞竖强 | Phytic acid production process |
| CN105347711A (en) * | 2015-10-26 | 2016-02-24 | 贵州腾峰科技有限责任公司 | Modified phosphogypsum and preparation method thereof |
| CN105523533A (en) * | 2016-01-22 | 2016-04-27 | 贵州能矿织金磷化工有限公司 | Method for preparing high-quality phosphoric acid and high-quality phosphogypsum by leaching rare-earth-containing phosphorite with reproducible phosphoric acid |
| CN105731513A (en) * | 2016-01-22 | 2016-07-06 | 贵州能矿织金磷化工有限公司 | Method for preparing rare earth oxide by leaching rare earth-containing phosphorite from regenerated phosphoric acid |
| CN107400026A (en) * | 2016-05-20 | 2017-11-28 | 陈海鸿 | A kind of multienzyme series fertilizer and preparation method and its vacuum fermentation device |
Non-Patent Citations (4)
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| KAWAI, T ET AL: "EFFECTS OF CALCIUM-SULFATE AND SUBLIMED SULFUR ON INCIDENCE OF INTERNAL BROWNING IN ROOTS OF JAPANESE RADISH", <JOURNAL OF THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE> * |
| 宋 丹: "外源植酸酶提高土壤磷素有效性的研究", 《农业科技与装备》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3854221A1 (en) * | 2020-01-21 | 2021-07-28 | Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | Method of providing phosphate from a phytate-containing biomass, phytate and phosphate reduced biomass, and uses thereof |
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Application publication date: 20180605 |
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