CN114804963A - Method for preparing mineral type potassium-magnesium-silicon slow release fertilizer by using nephrite tailings - Google Patents
Method for preparing mineral type potassium-magnesium-silicon slow release fertilizer by using nephrite tailings Download PDFInfo
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- CN114804963A CN114804963A CN202210308155.6A CN202210308155A CN114804963A CN 114804963 A CN114804963 A CN 114804963A CN 202210308155 A CN202210308155 A CN 202210308155A CN 114804963 A CN114804963 A CN 114804963A
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 33
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 27
- 239000011707 mineral Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- ISRWWRJLOMIQNG-UHFFFAOYSA-N [K].[Mg].[Si] Chemical compound [K].[Mg].[Si] ISRWWRJLOMIQNG-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 41
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 36
- 239000010977 jade Substances 0.000 claims abstract description 33
- 238000005245 sintering Methods 0.000 claims abstract description 24
- 239000006004 Quartz sand Substances 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 238000012216 screening Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- 239000008187 granular material Substances 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 7
- 238000001304 sample melting Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 229910052889 tremolite Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 abstract description 18
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052700 potassium Inorganic materials 0.000 abstract description 16
- 239000011591 potassium Substances 0.000 abstract description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 15
- 239000011575 calcium Substances 0.000 abstract description 14
- 229910052791 calcium Inorganic materials 0.000 abstract description 14
- 229910052710 silicon Inorganic materials 0.000 abstract description 14
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 11
- 239000010703 silicon Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 abstract description 5
- 150000003377 silicon compounds Chemical class 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 12
- ZOYQVVVFGFZXLB-UHFFFAOYSA-N [K].[Mg].[Ca].[Si] Chemical compound [K].[Mg].[Ca].[Si] ZOYQVVVFGFZXLB-UHFFFAOYSA-N 0.000 description 6
- 230000008635 plant growth Effects 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- LAZOHFXCELVBBV-UHFFFAOYSA-N [Mg].[Ca].[Si] Chemical compound [Mg].[Ca].[Si] LAZOHFXCELVBBV-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000029553 photosynthesis Effects 0.000 description 3
- 238000010672 photosynthesis Methods 0.000 description 3
- PYIXHKGTJKCVBJ-UHFFFAOYSA-N Astraciceran Natural products C1OC2=CC(O)=CC=C2CC1C1=CC(OCO2)=C2C=C1OC PYIXHKGTJKCVBJ-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- NDVRQFZUJRMKKP-UHFFFAOYSA-N Betavulgarin Natural products O=C1C=2C(OC)=C3OCOC3=CC=2OC=C1C1=CC=CC=C1O NDVRQFZUJRMKKP-UHFFFAOYSA-N 0.000 description 2
- IHPVFYLOGNNZLA-UHFFFAOYSA-N Phytoalexin Natural products COC1=CC=CC=C1C1OC(C=C2C(OCO2)=C2OC)=C2C(=O)C1 IHPVFYLOGNNZLA-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000000280 phytoalexin Substances 0.000 description 2
- 150000001857 phytoalexin derivatives Chemical class 0.000 description 2
- 230000008636 plant growth process Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a method for preparing mineral type potassium magnesium silicon slow release fertilizer by nephrite tailings, which comprises the following steps of S1: firstly, preparing raw materials, namely 3.30-5.00 parts of nephrite jade tailings, 0-3.04 parts of quartz sand and 3.77-5.72 parts of potassium carbonate, cleaning the prepared raw materials by using clear water, drying the nephrite jade tailings, the quartz sand and the potassium carbonate by using a dryer after the raw materials are cleaned, S2 putting the designed raw material components into a ball mill, mixing for 5-7 minutes, taking out powder, sampling and detecting the taken out powder, and screening the powder by using a screening device after the sampling and detecting to ensure that the raw materials have no larger particles, S3, S4. The potassium, magnesium, calcium and silicon compounds are prepared by mixing and sintering the raw materials, so that the potassium element can be properly limited in a silicate framework structure, and meanwhile, the elements in the tailings are properly activated, so that the effect of releasing the potassium, magnesium, calcium and silicon elements for a long time is achieved, the utilization rate of the fertilizer is improved, and the high-value comprehensive utilization of the nephrite tailings is realized.
Description
Technical Field
The invention relates to the technical field of preparing slow release fertilizer from nephrite jade tailings, in particular to a method for preparing mineral type potassium magnesium silicon slow release fertilizer from nephrite jade tailings.
Background
In the using process of the traditional quick-soluble fertilizer, due to the leaching effect of rainfall, the actual fertilizer using efficiency is low, meanwhile, the lost fertilizer is gathered in a water body, and environmental problems such as eutrophication and the like can be brought. The nitrogen, phosphorus and potassium are three main nutrient elements required by plant growth, and in addition, elements such as silicon, magnesium, calcium and the like are also important for the plant growth, for example, the silicon element is rich in rice hulls, and the magnesium element is a main component for forming phytoalexin. Therefore, a method for preparing mineral potassium magnesium silicon slow release fertilizer by using nephrite jade tailings is provided.
Disclosure of Invention
Therefore, the invention aims to provide a method for preparing mineral potassium magnesium silicon slow release fertilizer by using nephrite tailings, potassium, magnesium, calcium and silicon compounds are prepared by mixing and sintering raw materials, potassium elements can be properly limited in a silicate framework structure, and elements in the tailings are properly activated, so that the effect of releasing the potassium elements, the magnesium elements, the calcium elements and the silicon elements for a long time is achieved, the utilization rate of the fertilizer is improved, and high-value comprehensive utilization of the nephrite tailings is realized.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a method for preparing mineral potassium magnesium silicon slow release fertilizer by nephrite jade tailings comprises the following steps:
s1: firstly, preparing raw materials, namely 3.30-5.00 parts of nephrite jade tailings, 0-3.04 parts of quartz sand and 3.77-5.72 parts of potassium carbonate, cleaning the prepared raw materials by using clear water, and drying the nephrite jade tailings, the quartz sand and the potassium carbonate by using a dryer after the raw materials are cleaned;
s2: putting the designed raw material components into a ball mill, mixing for 5-7 minutes, taking out powder, sampling and detecting the taken out powder, and screening the powder through a screening device after sampling and detecting to ensure that no large-particle raw material exists;
s3: putting the treated powder into an alumina dry pot, putting the alumina dry pot into a high-temperature sample melting furnace for sintering, taking out a sintered sample after sintering, and analyzing the sintered sample by using an X-ray powder crystal diffraction device;
s4: the sintered sample is pulverized and sample granules are produced by a granulator, and the produced sample granules are weighed and packaged.
As a preferable scheme of the method for preparing the mineral potassium-magnesium-silicon slow release fertilizer by using the nephrite jade tailings, the sintering temperature and the heat preservation experimental conditions are controlled to be 850-950 ℃ and the heat preservation time is controlled to be 2-3 h in the step S2.
As a preferable scheme of the method for preparing the mineral potassium magnesium silicon slow release fertilizer by using nephrite jade tailings, the ratio of the nephrite jade tailings, the quartz sand and the potassium carbonate separated in the step S3 is 2.40: 1.00: 2.83.
as a preferable scheme of the method for preparing the mineral potassium magnesium silicon slow release fertilizer by using the nephrite jade tailings, in the step S3, after the sintered sample is detected by the X-ray powder crystal diffraction device, the chemical composition of the nephrite jade tailings is tested by XRF.
The preferable scheme of the method for preparing the mineral potassium-magnesium-silicon slow release fertilizer by using the nephrite tailings is that the nephrite tailings in the raw materials refer to a mineral aggregate mainly containing tremolite, the content of the nephrite tailings is more than 90%, and the content of other minerals is less than 10%.
Compared with the prior art, the invention has the beneficial effects that: the potassium, magnesium, calcium and silicon compounds are prepared by mixing and sintering raw materials, potassium element can be properly limited in a silicate framework structure, elements in tailings are properly activated, the effect of releasing the potassium, magnesium, calcium and silicon elements for a long time is achieved, the utilization rate of the fertilizer is improved, high-value comprehensive utilization of nephrite tailings is achieved, when the nephrite tailings are used specifically, the raw materials are firstly prepared, 3.30-5.00 parts of the nephrite tailings, 0-3.04 parts of quartz sand and 3.77-5.72 parts of potassium carbonate are obtained, the prepared raw materials are cleaned by using clear water, after the raw materials are cleaned, a dryer is used for drying the nephrite tailings, the quartz sand and the potassium carbonate, the designed raw material components are put into a ball mill, the powder is taken out after mixing for 5-7 minutes, the powder is sampled and detected, and after the sampling detection, the powder is screened by a screening device, ensuring that no large particles exist in the raw materials, putting the treated powder into an alumina dry pot, putting the dried powder into a high-temperature sample melting furnace for sintering, taking out a sintered sample after sintering, analyzing the sintered sample by using an X-ray powder crystal diffraction device, crushing the sintered sample, manufacturing sample particles by using a granulator, weighing and packaging the prepared sample particles, wherein nephrite tailings contain rich Ca, Mg, Si and other elements which play an important role in the plant growth process, such as silicon element which can improve the photosynthesis and root activity of rice so as to ensure that the content of useful elements in the nephrite tailings is rich, magnesium element which is a main component forming phytochlorophyll, calcium element which can stimulate the growth of plant roots and stems and leaves and can supply minerals such as calcium-magnesium-silicon for a long time to soil and can activate the soil, can also help to restore the ecology of the soil. Therefore, the potassium-magnesium (calcium) -silicon compound can realize the long-term release of nutrients such as potassium-magnesium (calcium) -silicon and the like in soil, has high fertilizer utilization rate and better environmental compatibility, and is a potential slow-release fertilizer with excellent performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a plot of XRD data for a K2MgSi3O8 compound of the invention;
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
The invention provides a method for preparing mineral potassium magnesium silicon slow release fertilizer by nephrite tailings, which prepares potassium, magnesium, calcium and silicon compounds by mixing and sintering raw materials, can properly limit potassium elements in a silicate framework structure, and simultaneously properly activates elements in the tailings, thereby achieving the effect of releasing the potassium, magnesium, calcium and silicon elements for a long time, improving the utilization rate of the fertilizer and realizing high-value comprehensive utilization of the nephrite tailings.
Example 1:
s1: firstly, preparing raw materials, namely 3.30 parts of nephrite jade tailings, 0.1 part of quartz sand and 3.77 parts of potassium carbonate, cleaning the prepared raw materials by using clear water, and drying the nephrite jade tailings, the quartz sand and the potassium carbonate by using a dryer after the raw materials are cleaned;
s2: putting the designed raw material components into a ball mill, mixing for 5 minutes, taking out powder, sampling and detecting the taken out powder, and screening the powder through a screening device after sampling and detecting to ensure that no large-particle raw material exists;
s3: putting the treated powder into an alumina dry pot, putting the alumina dry pot into a high-temperature sample melting furnace for sintering, taking out a sintered sample after sintering, controlling the sintering temperature to be 850 ℃ and the heat preservation time to be 2 hours, and analyzing the sintered sample by using an X-ray powder crystal diffraction device;
s4: the sintered sample is pulverized and sample granules are produced by a granulator, and the produced sample granules are weighed and packaged.
Example 2:
s1: firstly, preparing raw materials, namely 4 parts of nephrite jade tailings, 3 parts of quartz sand and 4.5 parts of potassium carbonate, cleaning the prepared raw materials by using clear water, and drying the nephrite jade tailings, the quartz sand and the potassium carbonate by using a dryer after the raw materials are cleaned;
s2: putting the designed raw material components into a ball mill, mixing for 6 minutes, taking out powder, sampling and detecting the taken out powder, and screening the powder through a screening device after sampling and detecting to ensure that no large-particle raw material exists;
s3: putting the treated powder into an alumina dry pot, putting the alumina dry pot into a high-temperature sample melting furnace for sintering, taking out a sintered sample after sintering, controlling the sintering temperature at 900 ℃ and the heat preservation time at 2.5h, and analyzing the sintered sample by using an X-ray powder crystal diffraction device;
s4: the sintered sample is pulverized and sample granules are produced by a granulator, and the produced sample granules are weighed and packaged.
Example 3:
s1: firstly, preparing raw materials, namely 5.00 parts of nephrite jade tailings, 3.04 parts of quartz sand and 5.72 parts of potassium carbonate, cleaning the prepared raw materials by using clear water, and drying the nephrite jade tailings, the quartz sand and the potassium carbonate by using a dryer after the raw materials are cleaned;
s2: putting the designed raw material components into a ball mill, mixing for 7 minutes, taking out powder, sampling and detecting the taken out powder, and screening the powder through a screening device after sampling and detecting to ensure that no large-particle raw material exists;
s3: putting the treated powder into an alumina dry pot, putting the alumina dry pot into a high-temperature sample melting furnace for sintering, taking out a sintered sample after sintering, controlling the sintering temperature to be 950 ℃, controlling the heat preservation time to be 3h, and analyzing the sintered sample by using an X-ray powder crystal diffraction device;
s4: the sintered sample is pulverized and sample granules are produced by a granulator, and the produced sample granules are weighed and packaged.
In combination with the above, the nephrite jade tailings were subjected to chemical composition testing by XRF, the test results of which are shown in the following table:
| component | CaO | SiO 2 | MgO | Al 2 O 3 | Fe T O | MnO | Na 2 O | K 2 O | P 2 0 5 | LOI |
| content | 14.79 | 55.77 | 22.47 | 0.48 | 1.22 | 0.06 | 0.16 | 0.03 | 0.04 | 3.21 |
according to the chemical components of nephrite jade tailings, the nephrite jade tailings contain rich elements such as Ca, Mg and Si, the elements play important roles in the growth process of plants, for example, the silicon element can improve the photosynthesis and the root activity of rice, so that the content of useful elements in the nephrite jade tailings is rich, the magnesium element is a main component forming phytoalexin, the calcium element can stimulate the growth of plant roots and stems and leaves, and can also supply minerals such as calcium-magnesium-silicon for soil for a long time, and the minerals can activate the soil and help to restore the ecology of the soil. Therefore, the potassium-magnesium (calcium) -silicon compound can realize the long-term release of nutrients such as potassium-magnesium (calcium) -silicon and the like in soil, has high fertilizer utilization rate and better environmental compatibility, and is a potential slow-release fertilizer with excellent performance.
The method for preparing the mineral potassium-magnesium-silicon slow release fertilizer by using nephrite jade tailings comprises the steps of preparing raw materials, namely 3.30-5.00 parts of nephrite jade tailings, 0-3.04 parts of quartz sand and 3.77-5.72 parts of potassium carbonate, cleaning the prepared raw materials by using clear water, drying the nephrite jade tailings, the quartz sand and the potassium carbonate by using a dryer after the raw materials are cleaned, putting the designed raw material components into a ball mill, mixing for 5-7 minutes, taking out powder, performing sampling detection on the taken out powder, screening the powder by using a screening device after the sampling detection to ensure that the raw materials have no large particles, putting the treated powder into an alumina dry pot, putting the alumina dry pot into a high-temperature melting furnace for sintering, taking out a sintered sample after the sintering is finished, analyzing the sintered sample by using an X-ray powder crystal diffraction device, crushing the sintered sample, the method comprises the steps of preparing sample particles by a granulator, weighing and packaging the prepared sample particles, preparing compounds of potassium, magnesium, calcium and silicon by mixing and sintering raw materials, properly limiting potassium element in a silicate skeleton structure, and simultaneously properly activating elements in tailings to achieve the effect of releasing potassium, magnesium, calcium and silicon elements for a long time, thereby improving the utilization rate of fertilizer and realizing high-value comprehensive utilization of nephrite tailings, wherein the nephrite tailings contain rich elements such as Ca, Mg and Si, the elements play an important role in the plant growth process, such as the silicon element can improve photosynthesis and root activity of rice, so that the content of useful elements in the nephrite tailings is rich, the magnesium element is a main component forming phytochlorophyll, the calcium element can stimulate the growth of plant roots and stems and leaves, and can also supply minerals such as calcium-magnesium-silicon to soil for a long time, these minerals not only activate the soil, but also help restore the ecology of the soil. Therefore, the potassium-magnesium (calcium) -silicon compound can realize the long-term release of nutrients such as potassium-magnesium (calcium) -silicon and the like in soil, has high fertilizer utilization rate and better environmental compatibility, and is a potential slow-release fertilizer with excellent performance.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A method for preparing mineral potassium magnesium silicon slow release fertilizer by nephrite tailings is characterized by comprising the following steps:
s1: firstly, preparing raw materials, namely 3.30-5.00 parts of nephrite jade tailings, 0-3.04 parts of quartz sand and 3.77-5.72 parts of potassium carbonate, cleaning the prepared raw materials by using clear water, and drying the nephrite jade tailings, the quartz sand and the potassium carbonate by using a dryer after the raw materials are cleaned;
s2: putting the designed raw material components into a ball mill, mixing for 5-7 minutes, taking out powder, sampling and detecting the taken out powder, and screening the powder through a screening device after sampling and detecting to ensure that no large-particle raw material exists;
s3: putting the treated powder into an alumina dry pot, putting the alumina dry pot into a high-temperature sample melting furnace for sintering, taking out a sintered sample after sintering, and analyzing the sintered sample by using an X-ray powder crystal diffraction device;
s4: the sintered sample is pulverized and sample granules are produced by a granulator, and the produced sample granules are weighed and packaged.
2. The method for preparing the mineral type potassium-magnesium-silicon slow release fertilizer by using nephrite jade tailings as claimed in claim 1, wherein in the step S2, the sintering temperature and the heat preservation experimental conditions are controlled to be 850-950 ℃, and the heat preservation time is controlled to be 2-3 hours.
3. The method for preparing the mineral type potassium-magnesium-silicon slow release fertilizer by using the nephrite jade tailings as claimed in claim 2, wherein the ratio of the nephrite jade tailings, the quartz sand and the potassium carbonate separated in the step S3 is 2.40: 1.00: 2.83.
4. the method for preparing the mineral type potassium-magnesium-silicon slow release fertilizer by using the nephrite jade tailings as claimed in claim 3, wherein in the step S3, after the sintered sample is detected by the X-ray powder crystal diffraction device, the nephrite jade tailings are subjected to chemical component test by XRF.
5. The method for preparing the mineral type potassium-magnesium-silicon slow release fertilizer by using the nephrite tailings as the claim 4, wherein the nephrite tailings in the raw material are mineral aggregates mainly containing tremolite, the content of the nephrite tailings is more than 90%, and the content of other minerals is less than 10%.
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|---|---|---|---|---|
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| KR20130092275A (en) * | 2012-02-10 | 2013-08-20 | 주식회사 한우리비료 | Method for manufacturing sulfer fertilizer and sulfer fertilizer thereof |
| WO2019227394A1 (en) * | 2018-05-31 | 2019-12-05 | 深圳前海大地矿物科技有限公司 | Silicon-based slow-release potassium fertilizer and preparation method therefor |
| CN111302845A (en) * | 2019-07-09 | 2020-06-19 | 深圳前海大地矿物科技有限公司 | Nitrogen phosphorus potassium full slow release fertilizer and its production and application method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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