Magnetic zeolite water fertilizer convenient to recycle

Abstract

The invention discloses a magnetic zeolite water fertilizer convenient to recycle, which comprises a floating core, a magnetic zeolite carrier and a slow-release fertilizer, the outside of the floating core is adhered with a magnetic zeolite carrier layer through an adhesive, the outside of the magnetic zeolite carrier layer is coated with a slow-release fertilizer layer, and the outside of the slow-release fertilizer layer is coated with a protective layer. The floating core is provided with one or more openings, the one or more openings are not covered by an adhesive, and a degradation layer is arranged at the opening and is connected with the adhesive at the two ends of the opening, so that the zeolite slow-release fertilizer generates foaming change of chemical reaction in water through the floating core after the fertility is released through the design of the floating core; the floating core with the mission-completed zeolite floats out of the water surface and is convenient to recycle, the zeolite is magnetically modified and has magnetism, the recycling work of the floating zeolite is further facilitated, the labor cost is reduced, and the magnetic zeolite can more effectively reduce the loss of the chemical fertilizer through the unique magnetic separation characteristic of the magnetic zeolite, so that the utilization rate of the chemical fertilizer is improved. The utilization rate of the fertilizer is improved.

Description

Technical Field

[0001] The invention relates to the field of slow-release fertilizers, in particular to a magnetic zeolite water-based fertilizer which is convenient to recycle. Background Art

[0002] Zeolite has been widely used in the agricultural field in recent years as an excellent water-retaining and fertilizer-retaining material due to its good adsorption and cation exchange properties. Existing zeolite water-fertilizer usually refers to a fertilization method in which zeolite is mixed with chemical fertilizer or organic fertilizer and then applied to the soil through an irrigation system. Zeolite, due to its unique crystal structure and adsorption properties, can effectively absorb and preserve water and nutrients, reduce nutrient loss, and improve fertilizer utilization.

[0003] Although zeolite itself is non-toxic and harmless, if zeolite fertilizer is used improperly or excessively, it may cause nutrient imbalance in the soil and even cause soil pollution. After repeated use of zeolite fertilizer, more zeolite will accumulate in the soil, affecting the growth environment of crops. While zeolite fertilizer brings certain benefits, there are also some potential disadvantages or issues that need attention. When using zeolite fertilizer, it is necessary to fully consider its applicability, dosage, operation method, and possible impact on the environment to ensure that it can achieve maximum benefits and reduce negative impacts on the environment, which undoubtedly increases the difficulty of fertilization management. Summary of the invention

[0004] The main purpose of the invention is to provide a magnetic zeolite fertilizer which is convenient to recycle.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A magnetic zeolite water-fertilizer that is easy to recycle comprises a floating core, a magnetic zeolite carrier and a slow-release fertilizer. The outside of the floating core is adhered with a magnetic zeolite carrier layer by an adhesive, the outside of the zeolite layer is coated with a slow-release fertilizer layer, and the outside of the slow-release fertilizer layer is coated with a protective layer. The floating core is provided with a single or multiple openings, the single or multiple openings are not covered by an adhesive, and a degradation layer is provided at the opening to connect the adhesive at both ends of the opening.

[0007] Furthermore, the floating core is a mixed powder material made of polyurethane, a foaming agent and a catalyst in a certain proportion, and is solidified under high pressure to form particles with a diameter of 1-2 mm.

[0008] Furthermore, the magnetic zeolite carrier is made from natural zeolite or artificial zeolite through a modification process.

[0009] Furthermore, the method for preparing the magnetic zeolite carrier includes:

[0010] S1. Dissolve a certain proportion of FeCl3·6H2O and FeSO4·7H2O in deionized water, and stir in an environment with a temperature of 50 - 70 °C and in a space filled with nitrogen.

[0011] S2. Slowly add NaOH solution to co-precipitate Fe3+ and Fe2+ to form Fe3O4.

[0012] S3. Then add synthetic zeolite or natural zeolite and continue to stir for 20 minutes.

[0013] S4. After the reaction is completed, remove the liquid part by magnetic decantation, wash, dry, and grind the solid matter to obtain the magnetic zeolite carrier.

[0014] Furthermore, the magnetic zeolite carrier needs to be put into the beneficial bacteria biological agent solution for adsorption, and after natural drying, it is wrapped on the floating layer through an adhesive.

[0015] Furthermore, the beneficial bacteria biological agent solution is made by fermentation technology with one or several of rhizobia, nitrogen-fixing bacteria, phosphorus-solubilizing bacteria, and potassium-solubilizing bacteria as the main active ingredients.

[0016] Furthermore, the main materials of the degradation layer are one or more of starch, polylactic acid, and polycaprolactone, and the degradation layer can also be an oxalate film.

[0017] Furthermore, the protective layer is biological wax, which is a combination of one or more of plant wax, animal wax, and microbial wax.

[0018] Furthermore, the adhesive is made of non-degradable materials or materials with a degradation time of not less than six months after curing into a film.

[0019] A preparation method of a magnetically zeolite water and fertilizer that is convenient for recycling, including the steps:

[0020] Step 1. Prepare a floating core, and adhere a degradation layer to the lower part of the floating core. The area of the degradation layer covering the floating core does not exceed 1 / 3 of the outer surface area of the floating core.

[0021] Step 2. Prepare a magnetic zeolite carrier, use the magnetic zeolite carrier to absorb the beneficial bacteria biological agent solution, and absorb the corresponding nutrients through the magnetic zeolite carrier. The nutrients include nitrogen, phosphorus, potassium, and other trace elements.

[0022] Step 3. Adhere magnetic zeolite powder to the outer surface of the remaining floating core through an adhesive to form a magnetic zeolite carrier layer. The adhesive can wrap part of the degradation layer, but does not completely wrap the floating core, that is, an opening with an adhesive gap is formed on the floating core.

[0023] Step 4: After the magnetic zeolite carrier layer is formed, a slow-release fertilizer layer is wrapped outside the magnetic zeolite carrier layer. The slow-release fertilizer layer is a kind of organic fertilizer slow-release fertilizer, and a protective layer is coated outside the slow-release fertilizer layer.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] Through the design of the floating core, after the zeolite slow-release fertilizer releases its fertility, chemical reaction foaming changes occur in the water through the floating core, causing the floating core to carry the zeolite that has completed its mission and float out of the water surface, facilitating recycling.

[0026] Moreover, the zeolite has been magnetically modified to make it magnetic, which further facilitates the recycling of the floating zeolite, reduces labor costs, and through its unique magnetic separation characteristics, the magnetic zeolite can more effectively reduce the loss of chemical fertilizers, thereby improving the utilization rate of fertilizers. Specific Embodiments

[0027] The present invention will be described in detail below in conjunction with embodiments, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0028] Embodiment 1

[0029] A convenient-to-recycle magnetic zeolite water fertilizer includes a floating core, a magnetic zeolite carrier, and a slow-release fertilizer. The outside of the floating core is adhesively connected with a magnetic zeolite carrier layer through an adhesive. The outside of the zeolite layer is coated with a slow-release fertilizer layer, and a protective layer is coated outside the slow-release fertilizer layer. The floating core is provided with one or more openings, and the one or more openings are formed by the adhesive not covering, and a degradation layer is provided at the opening to connect the adhesives at both ends of the opening.

[0030] The floating core is a mixed powder material made by mixing polyurethane, a foaming agent, and a catalyst in a certain proportion and is formed into particles with a diameter of 1-2 mm through high-pressure curing.

[0031] The magnetic zeolite carrier is made from natural zeolite or artificial zeolite through a modification process.

[0032] The manufacturing method of the magnetic zeolite carrier includes:

[0033] S1: Dissolve a certain proportion of FeCl3·6H2O and FeSO4·7H2O in deionized water, and stir in an environment temperature of 50-70 °C and in a space filled with nitrogen.

[0034] S2: Slowly add a NaOH solution to co-precipitate Fe3+ and Fe2+ to form Fe3O4.

[0035] S3. Then add synthetic zeolite or natural zeolite and continue stirring for 20 minutes.

[0036] S4. After the reaction is completed, remove the liquid part by magnetic decantation, wash, dry and grind the solid matter to obtain the magnetic zeolite carrier.

[0037] The magnetic zeolite carrier also needs to be put into the beneficial bacteria bioagent solution for adsorption. After natural drying, it is wrapped on the floating layer through an adhesive.

[0038] The beneficial bacteria bioagent solution includes one or several of rhizobia, nitrogen-fixing bacteria, phosphorus-solubilizing bacteria, potassium-solubilizing bacteria as the main active ingredients and is made through a fermentation process.

[0039] The main materials of the degradation layer are one or more of starch, polylactic acid and polycaprolactone. The degradation layer can also be an oxalate film.

[0040] The protective layer is a biological wax, which includes a combination of one or more of plant wax, animal wax and microbial wax.

[0041] The adhesive is made of non-degradable materials or materials whose degradation time is not less than six months after curing into a film.

[0042] Example 2

[0043] The specific preparation method of the magnetic zeolite water fertilizer includes the steps:

[0044] Step 1. Prepare a floating core and adhere a degradation layer to the lower part of the floating core. The area of the degradation layer covering the floating core does not exceed 1 / 3 of the outer surface area of the floating core.

[0045] Covering part of the floating core with the degradation layer first makes the subsequent work more convenient and reduces the processing difficulty. Otherwise, an opening process needs to be carried out after the adhesive covers and fixes it, which is too complicated and not easy to implement, not meeting the normal production requirements. After 2 - 3 months, or even 4 - 5 months, the degradation layer has completed partial degradation or all degradation. At this time, water will seep into the floating core and react with the components inside the floating core, causing a foaming reaction inside, so that the zeolite floats out of the water surface.

[0046] Step 2. Prepare a magnetic zeolite carrier, use the magnetic zeolite carrier to absorb the beneficial bacteria bioagent solution, and absorb the corresponding nutrients through the magnetic zeolite carrier. The nutrients include nitrogen, phosphorus, potassium and other trace elements.

[0047] Through the characteristics of the magnetic zeolite carrier itself, it adsorbs sufficient nutrients to achieve the effect of slow-release fertilization. When the floating core is not in contact with water, the fertilizer is underwater for fertility delivery and replacement absorption of harmful substances.

[0048] Step 3: On the outer surface of the remaining floating core, magnetic zeolite powder is adhered through an adhesive to form a magnetic zeolite carrier layer. The adhesive can wrap part of the degradation layer, but not all of the floating core, that is, an opening with an adhesive gap is formed on the floating core.

[0049] Step 4: After the magnetic zeolite carrier layer is formed, a slow-release fertilizer layer is wrapped outside the magnetic zeolite carrier layer. The slow-release fertilizer layer is a kind of organic fertilizer slow-release fertilizer, and a protective layer is coated outside the slow-release fertilizer layer.

[0050] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modification or change made by those of ordinary skill in the art according to the disclosure of the present invention should be included in the protection scope recorded in the claims.

Claims

1. A magnetic zeolite fertilizer that is easy to recycle, characterized in that: The invention comprises a floating core, a magnetic zeolite carrier and a slow-release fertilizer. The outside of the floating core is adhered with a magnetic zeolite carrier layer by an adhesive, the outside of the zeolite layer is coated with a slow-release fertilizer layer, and the outside of the slow-release fertilizer layer is coated with a protective layer. The floating core is provided with a single or multiple openings, the single or multiple openings are not covered by the adhesive, and a degradation layer is provided at the opening to connect the adhesive at both ends of the opening.

2. The magnetic zeolite fertilizer that is easy to recycle according to claim 1, characterized in that: The floating core is a mixed powder material made of polyurethane, a foaming agent and a catalyst in a certain proportion, and is solidified under high pressure to form particles with a diameter of 1-2 mm.

3. The magnetic zeolite fertilizer that is easy to recycle according to claim 1, characterized in that: The magnetic zeolite carrier is made from natural zeolite or artificial zeolite through a modification process.

4. The magnetic zeolite fertilizer convenient for recycling according to claim 3, characterized in that: The method for preparing the magnetic zeolite carrier comprises: S1, dissolving a certain proportion of FeCl3-6H2O and FeSO4-7H2O in deionized water, stirring at an ambient temperature of 50-70°C and in a space filled with nitrogen; S2, slowly add NaOH solution to make Fe3+ and Fe2+ coprecipitate to form Fe3O4; S3, then add artificial zeolite or natural zeolite, and continue stirring for 20 minutes; S4, after the reaction is completed, the liquid portion is removed by magnetic decantation, and the solid matter is washed, dried, and ground to obtain a magnetic zeolite carrier.

5. The magnetic zeolite fertilizer that is easy to recycle according to claim 4, characterized in that: The magnetic zeolite carrier also needs to be put into a beneficial bacteria biological agent solution for adsorption, and after natural drying, it is wrapped on the floating layer through an adhesive.

6. The magnetic zeolite fertilizer that is easy to recycle according to claim 5, characterized in that: The beneficial bacteria biological agent solution includes one or more of rhizobia, nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium-solubilizing bacteria as main effective ingredients and is prepared through a fermentation process.

7. The magnetic zeolite fertilizer that is easy to recycle according to claim 1, characterized in that: The main material of the degradation layer is one or more of starch, polylactic acid and polycaprolactone. The degradation layer can also be an oxalate film.

8. The magnetic zeolite fertilizer that is easy to recycle according to claim 1, characterized in that: The protective layer is biowax, which includes a combination of one or more of plant wax, animal wax and microbial wax.

9. The method for preparing a magnetic zeolite fertilizer that is easily recyclable according to claim 1, characterized in that: The adhesive is made of a non-degradable material, or a material whose degradation time after curing into a film is not less than six months.

10. A method for preparing a magnetic zeolite fertilizer that is easily recyclable according to any one of claims 1 to 9, characterized in that: Includes steps: Step 1: prepare a floating core, and adhere a degradation layer to the lower part of the floating core, wherein the area of ​​the degradation layer covering the floating core does not exceed 1 / 3 of the outer surface area of ​​the floating core; Step 2: prepare a magnetic zeolite carrier, and use the magnetic zeolite carrier to absorb the bacterial biological agent solution, and absorb corresponding nutrients through the magnetic zeolite carrier, and the nutrients include nitrogen, phosphorus, potassium and other trace elements. Step 3: Adhere the magnetic zeolite powder on the outer surface of the remaining floating core by an adhesive to form a magnetic zeolite carrier layer. The adhesive can wrap part of the degradation layer but not all of the floating core, that is, an adhesive gap opening is formed on the floating core; Step 4: After the magnetic zeolite carrier layer is formed, a slow-release fertilizer layer is wrapped outside the magnetic zeolite carrier layer. The slow-release fertilizer layer is a kind of organic slow-release fertilizer, and a protective layer is coated outside the slow-release fertilizer layer.