CN114804955A - Soluble slow-release type soil improvement and conditioning multielement fertilizer and preparation process thereof - Google Patents

Soluble slow-release type soil improvement and conditioning multielement fertilizer and preparation process thereof Download PDF

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CN114804955A
CN114804955A CN202210477428.XA CN202210477428A CN114804955A CN 114804955 A CN114804955 A CN 114804955A CN 202210477428 A CN202210477428 A CN 202210477428A CN 114804955 A CN114804955 A CN 114804955A
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soil
fertilizer
calcium
conditioning
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陈士冬
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Tianmei Ecological Agricultural Technology Lianyungang Co ltd
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    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05CNITROGENOUS FERTILISERS
    • C05C5/00Fertilisers containing other nitrates
    • C05C5/02Fertilisers containing other nitrates containing sodium or potassium nitrate
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/40Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility

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  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)

Abstract

The invention provides a soluble slow-release type soil improvement and conditioning multi-element fertilizer and a preparation process thereof, and relates to the technical field of fertilizer preparation. The multi-element fertilizer comprises phyllite, schist, mica, silica powder, a beidellite solution, salt and calcium carbonate. The manufacturing process of the multielement fertilizer comprises the following steps: mixing phyllite, schist, mica, silicon powder, a beidellite solution and salt, adding nano particles, sintering at the temperature of 220 ℃ and 300 ℃ for 6-10h, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride after sintering, electrolyzing at the temperature of 220 ℃ and 240 ℃ for 4-8h, and separating to obtain liquid after electrolysis. The fertilizer can regulate the pH value of soil, improve soil hardening, increase the content of organic matters in the soil and supplement nutrient elements in the soil. The preparation process adopts natural fossil or mineral stone to prepare the fertilizer containing high-concentration calcium, so that the utilization rate of calcium carbonate in the fossil or mineral stone can reach about 99 percent, and the fertilizer can better condition soil.

Description

Soluble slow-release type soil improvement and conditioning multielement fertilizer and preparation process thereof
Technical Field
The invention relates to the technical field of fertilizer preparation, in particular to a soluble slow-release type soil improvement and conditioning multi-element fertilizer and a preparation process thereof.
Background
The fertilizer is a substance which provides one or more mineral elements necessary for plants, improves the soil property and improves the soil fertility level, and is one of the material bases of agricultural production. The fertilizer is important for increasing the yield of crops, and the nutrient elements necessary for higher plants comprise a plurality of elements such as carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium and the like, and the normal growth and development of the crops can be influenced by the lack of any element.
The soil is the basis for plant growth and development. Plants are fixed in the soil by their roots and absorb water and nutrients in the soil through the roots to ensure their normal physiological activities. The soil plays a supporting role for the plants and provides the requirements for water, fertilizer, gas and heat in the growth and development of the plants, so the physical and chemical properties and the fertility condition of the soil have important significance for the growth and development of the plants. The soil property is mainly determined by the comprehensive action of factors such as soil texture and structure, soil thickness, soil mineral substances, soil organic matters, soil temperature, water, soil microorganisms, soil acidity and alkalinity and the like.
In the agricultural planting and landscaping processes, the application of chemical pesticides and chemical fertilizers is one of the main means for killing insects and weeding and improving the soil nutrient content, but the problems of soil harmful substance residue, pH value disorder, soil hardening phenomenon, poor water and fertilizer retention capability and the like can occur when a large amount of chemical pesticides, chemical fertilizers and the like are applied for a long time, so that the soil degradation is caused, and the growth of crops and garden plants is seriously influenced.
The fossil or mineral stone contains abundant calcium elements, the extraction efficiency of the calcium elements in the fossil or mineral stone is low in the prior art, the extraction effect is poor, the utilization rate of the calcium elements in the fossil or mineral stone is only about 40%, and the problem that how to improve the utilization rate of the calcium elements in the fossil or mineral stone is to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a soluble slow-release type soil improvement and conditioning multi-element fertilizer which can condition the pH value of soil, improve soil hardening, increase the organic matter content of the soil and supplement nutrient elements in the soil.
The invention also aims to provide a preparation process of the soluble slow-release soil improvement and conditioning multi-element fertilizer, which adopts natural fossil or mineral stone to prepare the fertilizer containing high-concentration calcium, so that the utilization rate of calcium carbonate in the fossil or mineral stone can reach about 99 percent, and the fertilizer can better condition soil.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides a soluble slow-release type soil improvement and conditioning multi-element fertilizer which comprises the following raw materials in parts by weight: 20-80 parts of phyllite, 10-50 parts of schist, 15-60 parts of mica, 5-40 parts of silica powder, 10-40 parts of a beige fossil solution, 0.1-5 parts of salt and 2-20 parts of calcium carbonate.
The invention provides a preparation process of a soluble slow-release type soil improvement and conditioning multi-element fertilizer, which comprises the following steps:
mixing phyllite, schist, mica, silicon powder, a beidellite solution and salt, adding nano particles, sintering at the temperature of 220 ℃ and 300 ℃ for 6-10h, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride after sintering, electrolyzing at the temperature of 220 ℃ and 240 ℃ for 4-8h, separating to obtain liquid after electrolysis, and preparing the liquid into particles.
The soluble slow-release type soil improvement and conditioning multi-element fertilizer and the preparation process of the soluble slow-release type soil improvement and conditioning multi-element fertilizer provided by the embodiment of the invention have at least the following beneficial effects:
phyllite, schist and mica all contain a large amount of calcium element or other mineral substances, but the calcium element utilization rate is low and certain adverse effect is caused to soil if the phyllite, schist and mica are not treated. According to the invention, phyllite, schist and mica are selected as raw materials, calcium in the phyllite, schist and mica is extracted by sintering, and is changed into water-soluble calcium, and the water-soluble calcium can be absorbed and utilized by plants, so that the growth of the plants is facilitated. The salt, the calcium carbonate, the sodium molybdate, the potassium nitrate, the calcium chloride dihydrate and the magnesium chloride mainly play a role in catalysis or replacement, and are beneficial to changing other calcium separated out from the raw materials into water-soluble calcium under the electrolysis condition, so that the concentration of the calcium in the liquid is improved, and the water-soluble calcium can be better utilized by plants.
In the invention, the raw materials are reasonable in proportion, and the catalysis and replacement effects among the raw materials are better in the preparation process, so that the extraction rate of calcium in the raw materials can be improved, and the utilization rate of the calcium is further improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
A soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following raw materials in parts by weight: 20-80 parts of phyllite, 10-50 parts of schist, 15-60 parts of mica, 5-40 parts of silica powder, 10-40 parts of a beige fossil solution, 0.1-5 parts of salt and 2-20 parts of calcium carbonate.
Phyllite is a low grade metamorphic rock with a thousand-piece structure, with metamorphic degrees between slate and schist. The original rock is usually argillaceous rock (or argillaceous rock containing siliceous, calcareous and carbonaceous), siltstone, medium and acidic tuff, etc., and is formed through a bottom green sheet rock phase stage of regional low-temperature dynamic modification or regional dynamic heat flow modification. The physical development surface of the microscopic crystal change wafer is silky luster. The phyllite mineral composition comprises sericite, chlorite and quartz, and may contain small amount of feldspar, carbonaceous material, iron material, etc., and sometimes small amount of variegated crystal such as calcite, margarite, black chlorite or manganese aluminum garnet, etc.; the crystal structure of fine-grained scales is usually changed, the granularity is less than 0.1 mm, and small wrinkle structures are usually formed on the surface of the flakes.
Schist is one of metamorphic rocks having a typical lamellar configuration, and is a product of regional metamorphism. The mineral grain is characterized by having a flake structure, a plate structure and fibrous minerals which are arranged in parallel, have coarse grain sizes and can be distinguished by naked eyes. The main minerals of the coating are mica, quartz, amphibole, chlorite and the like, and the coating has low strength, is easy to weather and has poor freezing resistance.
Mica is a rock-making mineral, presents a hexagonal flaky crystal form, and is one of the main rock-making minerals. The mica crystal has a layered structure, and thus is a flaky crystal, mainly a hexagonal flaky crystal. Mica is a general name of minerals in the mica group, and is aluminosilicate of metals such as potassium, aluminum, magnesium, iron, lithium, etc., all of which have a layered structure and are monoclinic system. Mica block mica has very high insulating and heat-insulating properties, good chemical stability, strong acid resistance, strong alkali resistance and pressure resistance. When some muscovite is heated at 100-600 ℃, the elasticity and the surface property are not changed; after the temperature is 700-800 ℃, the dehydration, mechanical and electrical properties are changed, the elasticity is lost, and the product becomes brittle; at 1050 ℃, the structure broke down. The electrical performance of the phlogopite is better than that of the muscovite at the temperature of about 700 ℃.
Silica fume, also known as microsilica, is known by the scientific name "silica fume". The silicon powder is a neutral inorganic filler with stable physical and chemical properties, does not contain crystal water, does not participate in curing reaction, and does not influence the reaction mechanism. Has good wettability to various resins, good adsorption performance, easy mixing and no agglomeration. The silicon powder has reasonable particle size distribution, strong compactness and good wear resistance, can greatly improve the tensile strength, the compressive strength, the impact strength and the wear resistance of a condensate, and can improve the abrasion resistance by 0.5 to 2.5 times. The silicon powder can also reduce the linear expansion coefficient of a cured substance and the shrinkage rate of the cured substance, thereby eliminating internal stress and preventing cracking, and can effectively reduce and eliminate precipitation and delamination phenomena due to the fine granularity and reasonable distribution of the silicon powder. The silicon powder is pure, the impurity content is low, the physical and chemical properties are stable, and the condensate has good insulating property and arc resistance. The chemical component of the silicon powder is silicon dioxide, which belongs to inert substances, the silicon powder does not react with most of acid and alkali, and the silicon powder is uniformly distributed and covered on the surface of an object, so that the silicon powder has stronger corrosion resistance and the cavitation resistance is improved by 3-16 times. The silica powder has good compatibility with the water reducing agent, the fly ash, the mineral powder, the fiber and the like. Shellfish fossil solution is prepared by adding shellfish fossil into edible acid, stirring at room temperature, continuously injecting air, and reacting for 30 days.
The salt contains sodium chloride as main component, and impurities such as barium salt, chloride, magnesium, lead, arsenic, zinc, sulfate, etc., and the barium content should not exceed 20 mg/kg. Salty taste, and easy deliquescence when containing impurities; soluble in water or glycerol, poorly soluble in ethanol, insoluble in hydrochloric acid, neutral in aqueous solution and conductive. Sodium chloride in the solid state is not conductive, but in the molten state is conductive. The solubility in water increases slightly with increasing temperatureIs large. When the temperature is lower than 0.15 ℃, the dihydrate NaCl & 2H can be obtained 2 And O. Sterilization, disinfection, tooth protection, beauty treatment, skin cleaning, decontamination, medical treatment and important chemical raw materials. Chlorine, hydrogen and sodium hydroxide can be obtained by electrolyzing the sodium chloride solution. The simple substance sodium and chlorine can be obtained by electrolyzing and melting sodium chloride.
Calcium carbonate is an inorganic compound of the formula CaCO 3 Calcium carbonate is basic, basically insoluble in water and soluble in hydrochloric acid.
In the embodiment, phyllite, schist and mica are selected as main raw materials, and all the phyllite, schist and mica contain a large amount of calcium element or other mineral substances, but the utilization rate of the calcium element is low after the phyllite, the beili stone solution and salt are added into the phyllite solution and then sintered, so that the calcium in the fossil or mineral stone can be extracted, and the separated calcium can be changed into water-soluble calcium through electrolysis, so that the calcium element can be absorbed by plants after the phyllite, the mica and the like are applied to soil, and the plant growth is facilitated. In the sintering process, nano particles can be added, and the nano particles can play a role in promoting the precipitation of calcium, so that the extraction effect of the calcium in the raw materials is improved, and the utilization rate of the calcium in fossil or mineral stone is improved.
In this embodiment, the composition may further include, in parts by weight: 0.1-10 parts of sodium molybdate, 1-18 parts of potassium nitrate, 5-30 parts of calcium chloride dihydrate and 2-15 parts of magnesium chloride.
Sodium molybdate is an inorganic substance with the chemical formula Na 2 MoO 4 It is white rhombohedral crystal. The molybdenum trioxide can be generated by oxidizing and roasting molybdenum concentrate, a sodium molybdate solution is generated by leaching with liquid alkali, and then the molybdenum trioxide can be prepared by suction filtration, concentration, cooling, centrifugation and drying. Sodium molybdate can precipitate with heavy metal salts: BaMoO 4 (white), FeMoO 4 (dark brown), CuMoO 4 (Green), Ag 2 MoO 4 (white), PbMoO 4 (white), and the like. The molybdate has low toxicity and low pollution degree to the environment, and is a novel water treatment agent which is applied more at present.
Potassium nitrate is an inorganic substance commonly called potassium nitrate or potassium nitrate, KNO 3 Is prepared fromThe nitrate of potassium is colorless transparent orthorhombic crystal or rhombic crystal or white powder, has no odor, no toxicity, salty taste and cool feeling, has small moisture absorption in air, is not easy to agglomerate, is easy to dissolve in water, can be dissolved in liquid ammonia and glycerol, and is not dissolved in absolute ethyl alcohol and diethyl ether. The potassium nitrate is a chlorine-free nitrogen-potassium compound fertilizer, has high solubility, and the effective components of nitrogen and potassium can be quickly absorbed by crops, so that no chemical substance is left.
Calcium chloride dihydrate is a white or grey chemical, is mostly in the form of granules, has strong hygroscopicity, is very deliquescent when exposed to air, is easily dissolved in water, simultaneously emits a large amount of heat, is slightly alkaline in aqueous solution, has corrosiveness, and is dehydrated into an anhydrous substance when heated to 260 ℃. It can be used as refrigerant, calcium intensifier, chelating agent, solidifying agent and refrigerant for freezing, and can also be used as feed calcium supplement, oxygen and sulfur absorbent, food protectant, sizing agent, water purifying agent and antifreezing agent.
Magnesium chloride is an inorganic substance of the formula MgCl 2 Molecular weight is 95.211, and the product is colorless flaky crystal, slightly soluble in acetone, and soluble in water, ethanol, methanol, and pyridine. Deliquescent and fuming in humid air and subliming when hot and white in a stream of hydrogen. It can be used as a curing agent; a nutrient supplement; flavoring agent (in combination with magnesium sulfate, salt, calcium hydrogen phosphate, calcium sulfate, etc.).
The present embodiment may further include nanoparticles, where the nanoparticles are one or more of silver, aluminum oxide, and iron oxide. The dosage of the nano particles is 2-3 times of the weight of the mixed raw materials, the nano particles can play a role in catalyzing the sintering process, and can promote the dissolution of calcium in the mineral powder, so that the extraction effect of the calcium in the mineral powder is improved, and the utilization rate of the calcium in the mineral powder is improved.
A preparation process of a soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following steps:
pulverizing phyllite, schist and mica into powder with particle size of 20-40 μm, adding silicon powder, shell fossil solution and salt into the powder, mixing, adding nanoparticles, sintering at 300 deg.C for 6-10h at 220 deg.C for 10-20min under stirring at 100 deg.C for 200r/min, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride, stirring at 400r/min for 30-40min, electrolyzing at 240 deg.C for 4-8h at 220 deg.C for separation, filtering, separating the filtrate with centrifugation at 800r/min and 6-15min to obtain liquid, adding composite trace elements including magnesium sulfate, Boric acid and zinc sulfate, wherein the mass ratio of the boric acid to the zinc sulfate is 1: 0.25: 0.3, granulating the liquid.
In this example, phyllite, schist and mica were pulverized first, and the structural layer of the rock was destroyed during pulverization, so that the dissolution of calcium therein was accelerated during sintering, and the dissolution rate of calcium in the powder was the fastest when pulverized to 20 to 40 μm. And silicon powder, a shellfish fossil solution and salt are added for sintering, the silicon powder has good compatibility with the mineral powder, the mineral powder can have good uniformity in the shellfish fossil solution, and the salt can promote the dissolution of calcium in the mineral powder. Because calcium in the ore powder is changed into molten calcium at the temperature of above 220 ℃ and other substances in the ore powder are not dissolved out, the calcium in the ore powder is completely dissolved out after the ore powder is sintered at the temperature for a certain time, and the ore powder is sintered at the temperature of 300 ℃ for 6-10 hours in order to completely separate out the calcium in the ore powder. During sintering, the balance state of calcium precipitation can be destroyed by stirring, so that the mineral powder is subjected to external force and then the calcium in the mineral powder is further precipitated, and the calcium precipitation degree is the best when the mineral powder is stirred for 10-20min at the speed of 100-200 r/min.
After sintering, calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride are added, so that calcium is more conveniently changed into water-soluble calcium during electrolysis, and plants can more conveniently utilize and absorb the water-soluble calcium. Electrolyzing for 4-8h at the temperature of 220-240 ℃ to ensure that the calcium is always in a molten state and further changed into water-soluble calcium, and completely converting the form of the calcium under the condition, thereby improving the utilization rate of the calcium in the mineral powder. After electrolysis, a filtration method is used for separation, so that the precipitate in the electrolyte can be primarily separated from the liquid, but in order to improve the liquid concentration and cleanliness, the filtrate needs to be subjected to centrifugal separation, specifically, the filtrate is subjected to centrifugation at 500-800r/min for 6-15min, and high-concentration liquid can be obtained after centrifugation, so that the effect of improving the soil by the fertilizer is better. Optionally, the method also comprises the step of adding composite trace elements into the liquid, so that magnesium elements and zinc elements in the soil can be further supplemented, and the soil nutrient condition is better. The mass ratio of magnesium sulfate, boric acid and zinc sulfate in the composite trace elements is 1: 0.25: 0.3, so that the conditioning effect of the soil conditioner can be improved, and the damage to the soil caused by the excessive composite trace elements can be avoided.
In detail, the multi-element fertilizer obtained in the embodiment can be made into a soluble slow-release type particle shape, so that the multi-element fertilizer is more convenient to use and transport.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
A soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following raw materials:
20g of phyllite, 10g of schist, 15g of mica, 5g of silicon powder, 10mL of a beidellite solution, 0.1g of salt, 2g of calcium carbonate, 0.1g of sodium molybdate, 1g of potassium nitrate, 5g of calcium chloride dihydrate and 2g of magnesium chloride.
A preparation process of a soluble slow-release type soil improvement and conditioning multi-element fertilizer comprises the following steps:
mixing phyllite, schist, mica, silicon powder, a beidellite solution and salt, adding nano particles, sintering at 220 ℃ for 6h, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride, electrolyzing at 220 ℃ for 4h, separating to obtain liquid, and granulating the liquid.
In this embodiment, the nanoparticles are silver.
Example 2
A soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following raw materials:
80g of phyllite, 50g of schist, 60g of mica, 40g of silicon powder, 40mL of beidellite solution, 5g of salt, 20g of calcium carbonate, 10g of sodium molybdate, 18g of potassium nitrate, 30g of calcium chloride dihydrate and 15g of magnesium chloride.
A preparation process of a soluble slow-release type soil improvement and conditioning multi-element fertilizer comprises the following steps:
mixing phyllite, schist, mica, silicon powder, a beidellite solution and salt, adding nano particles, sintering at 300 ℃ for 10h, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride after sintering, electrolyzing at 240 ℃ for 8h, separating to obtain liquid, and preparing the liquid into particles.
In this embodiment, the nanoparticles are alumina.
Example 3
A soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following raw materials:
50g of phyllite, 20g of schist, 20g of mica, 10g of silicon powder, 20mL of a beidellite solution, 3g of salt, 9g of calcium carbonate, 2g of sodium molybdate, 6g of potassium nitrate, 13g of calcium chloride dihydrate and 7g of magnesium chloride.
A preparation process of a soluble slow-release type soil improvement and conditioning multi-element fertilizer comprises the following steps:
mixing phyllite, schist, mica, silicon powder, a beidellite solution and salt, adding nano particles, sintering at 240 ℃ for 8h, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride, electrolyzing at 230 ℃ for 6h, separating to obtain liquid, and granulating the liquid.
The nanoparticles in this example are iron oxide.
Example 4
A soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following raw materials:
40g of phyllite, 30g of schist, 30g of mica, 20g of silicon powder, 30mL of a beinite solution, 4g of salt, 15g of calcium carbonate, 5g of sodium molybdate, 12g of potassium nitrate, 20g of calcium chloride dihydrate and 12g of magnesium chloride.
A preparation process of a soluble slow-release type soil improvement and conditioning multi-element fertilizer comprises the following steps:
pulverizing phyllite, schist and mica into powder with particle diameter of 30 μm, adding silicon powder, beili stone solution and salt into the powder, mixing, adding nanoparticles, sintering at 240 deg.C for 7h, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride, stirring at 300r/min for 35min, electrolyzing at 235 deg.C for 7h, separating to obtain liquid, and granulating the liquid.
The nanoparticles in this example are silver and iron oxide.
Example 5
A soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following raw materials:
30g of phyllite, 15g of schist, 22g of mica, 18g of silicon powder, 25mL of beidellite solution, 2.5g of salt, 14g of calcium carbonate, 7g of sodium molybdate, 15g of potassium nitrate, 24g of calcium chloride dihydrate and 14g of magnesium chloride.
A preparation process of a soluble slow-release type soil improvement and conditioning multi-element fertilizer comprises the following steps:
pulverizing phyllite, schist and mica into powder with particle size of 25 μm, adding silicon powder, beili stone solution and salt into the powder, mixing, adding nanoparticles, sintering at 260 deg.C for 8.5h, stirring at 150r/min for 15min during sintering, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride, stirring at 260r/min for 32min, electrolyzing at 234 deg.C for 7.5h, separating, filtering, centrifuging the filtrate at a centrifuging speed of 600r/min for 10min to obtain liquid, and granulating the liquid.
The nanoparticles in this example are silver and alumina.
Example 6
A soluble slow-release type soil improvement and conditioning multielement fertilizer comprises the following raw materials:
25g of phyllite, 28g of schist, 26g of mica, 21g of silicon powder, 32mL of a beinite solution, 3.5g of salt, 6g of calcium carbonate, 7.5g of sodium molybdate, 10.5g of potassium nitrate, 16g of calcium chloride dihydrate and 9g of magnesium chloride.
A preparation process of a soluble slow-release type soil improvement and conditioning multi-element fertilizer comprises the following steps:
crushing phyllite, schist and mica, grinding to obtain a particle size of 28 mu m, adding silicon powder, a beili stone solution and salt into the powder, mixing, adding nano particles, sintering for 9h at 240 ℃, stirring for 12min at 160r/min in the sintering process, sequentially adding calcium carbonate, sodium molybdate, potassium nitrate, calcium chloride dihydrate and magnesium chloride after sintering, stirring for 32min at 350r/min, electrolyzing for 6.5h at 238 ℃, separating after electrolyzing, separating by using a filtering method, separating filtrate by using a centrifugal separation method after filtering, wherein the centrifugal speed is 700r/min, and the centrifugal time is 8min to obtain a liquid, adding composite trace elements into the liquid, wherein the composite trace elements comprise magnesium sulfate, boric acid and zinc sulfate, and the mass ratio of the magnesium sulfate to the boric acid to the zinc sulfate is 1: 0.25: 0.3, granulating the liquid.
The nanoparticles in this example are silver, alumina and iron oxide.
1. Testing of soil Properties
Selecting moderate fertility underground in a test, wherein the soil texture is loam and moderate saline-alkali soil, planting plants are grass, taking a soil sample in a depth of 10-30cm before the test, measuring the salt content, pH, organic matter, calcium, potassium and magnesium content of the soil, after sampling, randomly dividing the test field into 7 test areas, wherein the test areas have the same size of 30cm and 30cm, 1-6 test areas are test groups, the test groups correspondingly use the soluble slow-release soil improvement and conditioning multi-element fertilizer of examples 1-6 in the invention, 7 test areas are blank groups, and the blank groups use fossil or mineral stone fertilizers which are not prepared by the preparation process in the invention, and the use method comprises the following steps: the preparation is administered 3 times a year, every 4 months, and the dosage is 20g/m 2 And after one year, measuring the nutrient condition of the soil in the depth of 10-30cm in each test area, wherein the specific data are as follows:
TABLE 1 conditions of initial nutrients tested
Figure BDA0003626406710000121
TABLE 2 nutrient profile after test
Figure BDA0003626406710000131
As shown in tables 1 and 2, the fertilizers obtained in examples 1 to 6 of the present invention can adjust the alkaline soil to be neutral, reduce the salt content of the soil, increase the organic matter content of the soil, and increase the contents of exchangeable calcium and quick-acting potassium in the soil. Compared with a blank group, the fertilizer prepared by the preparation process can better condition soil. Therefore, the fertilizer obtained by the invention can condition the pH value of soil, reduce the salt content of the soil, increase the organic matter content of the soil, and improve the content of calcium and potassium available for plants in the soil, so that the soil is favorable for plant growth.
2. Plant growth test
The barley malt is planted in the test areas after treatment and in the test areas without treatment, the condition of the barley malt is the same at the beginning, the barley malt has statistical significance, the barley malt is planted for one month, the growth condition and the growth vigor of the wheat are observed during the planting period, the wheat bud and the root of each test area are taken to measure the calcium concentration, and the specific results are as follows:
TABLE 3 plant growth statistics
Figure BDA0003626406710000132
Figure BDA0003626406710000141
As shown in Table 3, the fertilizer of the present invention can increase the calcium absorption rate of plants, increase the growth rate of wheat, and make wheat grow well. Therefore, the soil conditioning fertilizer can convert calcium in fossil or mineral stone into calcium available for plants, and improves the utilization rate of the calcium for the plants.
In conclusion, the soluble slow-release soil improvement and conditioning multielement fertilizer and the preparation process thereof provided by the embodiment of the invention can condition the pH value of soil, improve soil hardening, increase the organic matter content of the soil and supplement nutrient elements in the soil. The manufacturing process of the multi-element fertilizer adopts natural fossil or mineral stone to prepare the fertilizer containing high-concentration calcium, so that the utilization rate of calcium carbonate in the fossil or mineral stone can reach about 99 percent, and the fertilizer can better condition soil.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims (10)

1. The soluble slow-release type soil improvement and conditioning multielement fertilizer is characterized by comprising the following raw materials in parts by weight: 20-80 parts of phyllite, 10-50 parts of schist, 15-60 parts of mica, 5-40 parts of silicon powder, 10-40 parts of a shellfish fossil solution, 0.1-5 parts of salt and 2-20 parts of calcium carbonate.
2. The soluble slow-release soil improvement and conditioning multielement fertilizer as claimed in claim 1, further comprising by weight: 0.1-10 parts of sodium molybdate, 1-18 parts of potassium nitrate, 5-30 parts of calcium chloride dihydrate and 2-15 parts of magnesium chloride.
3. The multi-element fertilizer for soil improvement and conditioning of soluble slow-release type according to claim 2, further comprising nanoparticles, wherein the nanoparticles are one or more of silver, aluminum oxide and iron oxide.
4. A process for the preparation of the multi-element fertilizer with soluble slow release for soil improvement and conditioning according to claim 3, comprising the following steps:
mixing phyllite, schist, mica, silicon powder, a beidellite solution and salt, adding nano particles, sintering at the temperature of 220-.
5. The process according to claim 4, wherein the powdery phyllite, schist or mica is pulverized to a particle size of 20 to 40 μm before sintering.
6. The process according to claim 4, wherein the mixture is stirred at 400r/min for 30-40min before electrolysis.
7. The manufacturing process according to claim 4, wherein stirring is further required during the sintering process, the stirring speed is 100-200r/min, and the stirring time is 10-20 min.
8. The process of claim 4, wherein the separating comprises two separations, the two separations being separated by filtration, and the filtrate being separated by centrifugation after filtration to provide the liquid.
9. The manufacturing process according to claim 8, wherein the centrifugation speed is 500-800r/min and the centrifugation time is 6-15 min.
10. The manufacturing process of claim 4, further comprising adding composite trace elements to the liquid, wherein the composite trace elements comprise magnesium sulfate, boric acid and zinc sulfate, and the mass ratio of the magnesium sulfate to the boric acid to the zinc sulfate is 1: 0.25: 0.3.
CN202210477428.XA 2022-05-04 2022-05-04 Soluble slow-release type soil improvement and conditioning multielement fertilizer and preparation process thereof Pending CN114804955A (en)

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CN113736468A (en) * 2021-10-09 2021-12-03 山东禹德农业科技有限公司 Soil conditioner and preparation method thereof
CN113800985A (en) * 2021-10-09 2021-12-17 山东禹德农业科技有限公司 Environment-friendly water-soluble soil conditioner containing petrifaction and minerals and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN102199058A (en) * 2011-02-22 2011-09-28 重庆森富生物科技发展有限公司 Foliage fertilizer (Tianbao mineral) and preparation method thereof
CN110494573A (en) * 2017-02-28 2019-11-22 Sms集团有限公司 Method for preparing lithium hydroxide by the ore containing lithium
CN113736468A (en) * 2021-10-09 2021-12-03 山东禹德农业科技有限公司 Soil conditioner and preparation method thereof
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Application publication date: 20220729