CN112174755A - Application of high-titanium blast furnace slag in organic fertilizer, organic fertilizer and preparation method of organic fertilizer - Google Patents
Application of high-titanium blast furnace slag in organic fertilizer, organic fertilizer and preparation method of organic fertilizer Download PDFInfo
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- CN112174755A CN112174755A CN202011183679.4A CN202011183679A CN112174755A CN 112174755 A CN112174755 A CN 112174755A CN 202011183679 A CN202011183679 A CN 202011183679A CN 112174755 A CN112174755 A CN 112174755A
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- 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
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C11/00—Other nitrogenous fertilisers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/04—Calcareous fertilisers from blast-furnace slag or other slags containing lime or calcium silicates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
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- 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
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
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- 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
- C05G3/70—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting wettability, e.g. drying agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention discloses an application of high-titanium blast furnace slag in an organic fertilizer, the organic fertilizer and a preparation method thereof, the invention comprises the application of the high-titanium blast furnace slag in the organic fertilizer, and the organic fertilizer comprises the following components in parts by weight: 50-70 parts of high-titanium blast furnace slag, 80-120 parts of corn straw powder, 5-15 parts of vermiculite, 10-20 parts of perlite, 10-25 parts of diatomite, 15-40 parts of humic acid, 5-10 parts of nitric acid, 20-30 parts of sawdust, 15-25 parts of rice bran, 15-25 parts of rice hull ash, 10-20 parts of plant ash, 10-30 parts of chicken manure and 20-30 parts of composite microbial inoculum. The invention also comprises a preparation method of the organic fertilizer. The invention provides a new approach for secondary utilization of the high-titanium blast furnace slag, and the organic fertilizer can enhance the soil fertility and promote the growth of crops, thereby effectively solving the problems of lower additional value, low utilization rate, higher cost and the like of slag reutilization in the prior art.
Description
Technical Field
The invention relates to the technical field of blast furnace slag and application thereof, in particular to application of high-titanium blast furnace slag in an organic fertilizer, the organic fertilizer and a preparation method thereof.
Background
The high titanium blast furnace slag is a waste slag discharged from a blast furnace during pig iron smelting, the temperature of the discharged waste slag reaches 1600 ℃ or above, and the main components of the high titanium blast furnace slag comprise titanium, silicon dioxide, calcium oxide, aluminum oxide, magnesium oxide and the like. At present, the main utilization mode of the high titanium blast furnace slag is hot splashing treatment, then magnetic separation and crushing are carried out, iron after the magnetic separation is recycled, and the slag is used as a building material. The existing slag recycling mode has complex process, the obtained product has low added value to cause the problem of environmental pollution, the cost is high, and the utilization rate is low because the larger secondary utilization value cannot be generated. Therefore, an efficient method for recycling the high titanium blast furnace slag is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the application of the high-titanium blast furnace slag in the organic fertilizer, the organic fertilizer and the preparation method thereof, provides a new way for the secondary utilization of the high-titanium blast furnace slag, and the obtained organic fertilizer can enhance the soil fertility, promote the crop growth and effectively solve the problems of lower additional value, low utilization rate, higher cost and the like of the slag recycling in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: provides an application of high titanium type blast furnace slag in organic fertilizer.
An organic fertilizer comprises the following components in parts by weight: 50-70 parts of high-titanium blast furnace slag, 80-120 parts of corn straw powder, 5-15 parts of vermiculite, 10-20 parts of perlite, 10-25 parts of diatomite, 15-40 parts of humic acid, 5-10 parts of nitric acid, 20-30 parts of sawdust, 15-25 parts of rice bran, 15-25 parts of rice hull ash, 10-20 parts of plant ash, 10-30 parts of chicken manure and 20-30 parts of composite microbial inoculum.
Further, the organic fertilizer comprises the following components in parts by weight: 60 parts of high-titanium blast furnace slag, 100 parts of corn straw powder, 10 parts of vermiculite, 15 parts of perlite, 18 parts of diatomite, 22 parts of humic acid, 7 parts of nitric acid, 25 parts of sawdust, 20 parts of rice bran, 20 parts of rice hull ash, 15 parts of plant ash, 20 parts of chicken manure and 25 parts of composite microbial inoculum.
Further, the complex microbial inoculum comprises bacillus subtilis, bacillus licheniformis and bacillus thuringiensis.
Furthermore, in the composite microbial agent, the number of bacillus subtilis colonies is 4-8 hundred million cfu/g, the number of bacillus licheniformis colonies is 8-20 hundred million cfu/g, and the number of bacillus thuringiensis colonies is 6-8 hundred million cfu/g.
Furthermore, the mesh number of the vermiculite is 40-60 meshes, and the mesh number of the perlite is 40-50 meshes.
Further, the humic acid is at least one of ammonium humate, potassium humate and biogas fertilizer.
The preparation method of the organic fertilizer comprises the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in 3000 Gauss 2000-sand and 1000 Gauss 500-sand magnetic fields, crushing and sieving to obtain slag powder;
(2) mixing chicken manure with sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) mixing humic acid and nitric acid, heating to 80-90 ℃, preserving heat for 1-2h, then adding the slag powder obtained in the step (1), the mixture powder obtained in the step (2), corn straw powder, vermiculite, perlite, diatomite and a composite microbial inoculum, fermenting for 4-8d at the temperature of 50-80 ℃, and then drying and granulating to obtain the organic fertilizer.
Further, the slag powder contained 27.76 wt% of calcium oxide, 7.7 wt% of magnesium oxide, 24.38 wt% of silicon dioxide, 12.99 wt% of aluminum oxide and 22.26 wt% of titanium dioxide; and small amounts of iron sesquioxide, total iron, sodium oxide, potassium oxide, manganese oxide, and vanadium oxide.
Further, in the step (1), the mesh number of the slag powder is 10-20 meshes.
Further, in the step (3), the mesh number of the organic fertilizer is 60-90 meshes.
Further, in the step (3), the pile is turned once every 12h during fermentation.
In summary, the invention has the following advantages:
1. the invention provides a new approach for secondary utilization of the high-titanium blast furnace slag, and the obtained organic fertilizer can enhance soil fertility, promote crop growth, and effectively solve the problems of low additional value, low utilization rate, high cost and the like in slag recycling in the prior art.
2. The invention provides a new application of high-titanium blast furnace slag, which contains elements such as calcium, silicon, titanium and the like, and the high-titanium blast furnace slag is used in an organic fertilizer, so that the high-titanium blast furnace slag can be fully utilized, the environmental pollution caused by waste is avoided, the utilization rate is improved, more additional economic values are obtained, the raw materials of the components of the organic fertilizer are wide in source and low in cost, the manufacturing cost of the organic fertilizer is reduced, the yield and the quality of crops are improved, and the application prospect is better.
3. The organic fertilizer takes high-titanium blast furnace slag, corn straw powder, diatomite, chicken manure, a composite microbial inoculum and the like as main components, the high-titanium blast furnace slag is subjected to magnetic separation twice, iron in the blast furnace slag is removed by screening, and then the high-titanium blast furnace slag is crushed into 10-20 meshes; and then mixing the chicken manure with the sawdust, the rice bran, the rice hull ash and the plant ash for subsequent fermentation, adding the rest components of the organic fertilizer for fermentation, and fermenting to generate nutritional ingredients required by the growth of crops to obtain the organic fertilizer. The nutrient components in the obtained organic fertilizer are not easy to lose, the growth of harmful bacteria can be inhibited, the stability of soil components is kept, the growth of crops is promoted, and the organic fertilizer has a large practical application value.
4. The high titanium type blast furnace slag provides elements such as calcium, silicon, titanium and the like for the organic fertilizer, and enriches the nutrient components of the organic fertilizer; the corn straw powder, the plant ash and the like contain potassium sulfate, potassium chloride and potassium carbonate, so that potassium element is provided for the organic fertilizer, and nutrient elements for crop growth are provided; the vermiculite and the perlite can improve the soil, play a role in loosening the soil, increase the soil moisture preservation capability of the soil and promote the growth of crops; the diatomite has strong adsorption performance, light volume weight and good mixing uniformity, is one of important components of high-efficiency organic fertilizer, can promote the growth of crops and improve soil, and further improves the growth promoting effect of the organic fertilizer; the chicken manure can increase organic colloid in the organic fertilizer, and meanwhile, organic matters are decomposed and converted into the organic colloid under the action of microorganisms, so that the soil adsorption surface is increased, a plurality of adhesive substances are generated, soil particles are cemented together to form a stable granular structure, the water-retaining, fertilizer-retaining and air-permeable performances of the soil are improved, the capacity of adjusting the temperature of the soil is improved, and the components of the organic fertilizer are stable; the bacillus subtilis, the bacillus licheniformis and the bacillus thuringiensis in the composite microbial agent can inhibit the growth of mixed bacteria, so that a high-efficiency fermentation environment is created, the different bacteria act together, the fermentation process of the organic fertilizer is accelerated, the production period is shortened, and the disease resistance of crops can be improved by the obtained organic fertilizer; the humic acid and the nitric acid are used in a combined mode, so that the humic acid is oxidized, the oxidized humic acid contains active groups such as carboxyl and oxygen-containing functional groups, the combination effect of the oxidized humic acid and titanium, silicon and the like in an organic fertilizer can be enhanced, soil components are more stable, the capability of promoting the growth and development of crops is stronger, the quality and the yield of the crops are improved, and the humic acid is suitable for planting of various crops.
Detailed Description
Example 1
The application of the high titanium type blast furnace slag in the organic fertilizer comprises the following components in parts by weight: 50 parts of high-titanium blast furnace slag, 80 parts of corn straw powder, 5 parts of 40-mesh vermiculite, 10 parts of 40-mesh perlite, 10 parts of diatomite, 15 parts of humic acid, 5 parts of nitric acid, 20 parts of sawdust, 15 parts of rice bran, 15 parts of rice hull ash, 10 parts of plant ash, 10 parts of chicken manure and 20 parts of composite microbial inoculum.
Wherein the compound microbial inoculum is bacillus subtilis, bacillus licheniformis and bacillus thuringiensis; in the composite microbial inoculum, the number of bacillus subtilis colonies is 5 hundred million cfu/g, the number of bacillus licheniformis colonies is 12 hundred million cfu/g, and the number of bacillus thuringiensis colonies is 6 hundred million cfu/g. Humic acid is ammonium humate and potassium humate; the mass ratio of the ammonium humate to the potassium humate is 1: 1.
The preparation method of the organic fertilizer comprises the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in 2000 gauss and 500 gauss magnetic fields, crushing and sieving to obtain 10-mesh slag powder;
(2) mixing chicken manure with sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) mixing humic acid and nitric acid, heating to 80 ℃, preserving heat for 1h, adding the slag powder obtained in the step (1), the mixture powder obtained in the step (2), corn straw powder, vermiculite, perlite, diatomite and a composite microbial inoculum, fermenting for 4d at the temperature of 50 ℃, turning over every 12h during fermentation, and drying and granulating to obtain the organic fertilizer.
Example 2
The application of the high titanium type blast furnace slag in the organic fertilizer comprises the following components in parts by weight: 60 parts of high-titanium blast furnace slag, 100 parts of corn straw powder, 10 parts of 50-mesh vermiculite, 15 parts of 45-mesh perlite, 18 parts of diatomite, 22 parts of humic acid, 7 parts of nitric acid, 25 parts of sawdust, 20 parts of rice bran, 20 parts of rice hull ash, 15 parts of plant ash, 20 parts of chicken manure and 25 parts of composite microbial inoculum.
Wherein the compound microbial inoculum is bacillus subtilis, bacillus licheniformis and bacillus thuringiensis; in the composite microbial inoculum, the number of bacillus subtilis colonies is 7 hundred million cfu/g, the number of bacillus licheniformis colonies is 15 hundred million cfu/g, and the number of bacillus thuringiensis colonies is 7 hundred million cfu/g. Humic acid is ammonium humate and biogas fertilizer; the mass ratio of the ammonium humate to the biogas fertilizer is 1: 1.
The preparation method of the organic fertilizer comprises the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in magnetic fields of 2500 gauss and 800 gauss, crushing and sieving to obtain 15-mesh slag powder;
(2) mixing chicken manure with sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) mixing humic acid and nitric acid, heating to 84 ℃, preserving heat for 1.5h, then adding the slag powder obtained in the step (1), the mixture powder obtained in the step (2), corn straw powder, vermiculite, perlite, diatomite and a composite microbial inoculum, fermenting for 6d at the temperature of 65 ℃, turning once every 12h during fermentation, and drying and granulating to obtain the organic fertilizer.
Example 3
The application of the high titanium type blast furnace slag in the organic fertilizer comprises the following components in parts by weight: 70 parts of high-titanium blast furnace slag, 120 parts of corn straw powder, 15 parts of 60-mesh vermiculite, 20 parts of 50-mesh perlite, 25 parts of diatomite, 40 parts of humic acid, 10 parts of nitric acid, 30 parts of sawdust, 25 parts of rice bran, 25 parts of rice hull ash, 20 parts of plant ash, 30 parts of chicken manure and 30 parts of composite microbial inoculum.
Wherein the compound microbial inoculum is bacillus subtilis, bacillus licheniformis and bacillus thuringiensis; in the composite microbial inoculum, the number of bacillus subtilis colonies is 5 hundred million cfu/g, the number of bacillus licheniformis colonies is 17 hundred million cfu/g, and the number of bacillus thuringiensis colonies is 7 hundred million cfu/g. The humic acid is ammonium humate, potassium humate and biogas fertilizer; the mass ratio of the ammonium humate to the potassium humate to the biogas fertilizer is 1:1: 1.
The preparation method of the organic fertilizer comprises the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in magnetic fields of 3000 gauss and 1000 gauss, crushing and sieving to obtain 20-mesh slag powder;
(2) mixing chicken manure with sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) mixing humic acid and nitric acid, heating to 90 ℃, preserving heat for 2h, adding the slag powder obtained in the step (1), the mixture powder obtained in the step (2), corn straw powder, vermiculite, perlite, diatomite and a composite microbial inoculum, fermenting for 8d at the temperature of 80 ℃, turning over every 12h during fermentation, and drying and granulating to obtain the organic fertilizer.
Comparative example 1
The organic fertilizer comprises the following components in parts by weight: 60 parts of high-titanium blast furnace slag, 100 parts of corn straw powder, 10 parts of 50-mesh vermiculite, 15 parts of 45-mesh perlite, 18 parts of diatomite, 25 parts of sawdust, 20 parts of rice bran, 20 parts of rice hull ash, 15 parts of plant ash, 20 parts of chicken manure and 25 parts of composite microbial inoculum.
Wherein the compound microbial inoculum is bacillus subtilis, bacillus licheniformis and bacillus thuringiensis; in the composite microbial inoculum, the number of bacillus subtilis colonies is 7 hundred million cfu/g, the number of bacillus licheniformis colonies is 15 hundred million cfu/g, and the number of bacillus thuringiensis colonies is 7 hundred million cfu/g.
The preparation method of the organic fertilizer comprises the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in magnetic fields of 2500 gauss and 800 gauss, crushing and sieving to obtain 15-mesh slag powder;
(2) mixing chicken manure with sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) and (3) mixing the slag powder obtained in the step (1), the mixture powder obtained in the step (2), the corn straw powder, vermiculite, perlite, diatomite and the composite microbial inoculum, fermenting for 6 days at the temperature of 65 ℃, turning the piles once every 12 hours during fermentation, and drying and granulating to obtain the organic fertilizer.
Comparative example 2
The organic fertilizer comprises the following components in parts by weight: 60 parts of high-titanium blast furnace slag, 100 parts of corn straw powder, 10 parts of 50-mesh vermiculite, 15 parts of 45-mesh perlite, 18 parts of diatomite, 22 parts of humic acid, 7 parts of nitric acid, 25 parts of sawdust, 20 parts of rice bran, 20 parts of rice hull ash, 15 parts of plant ash and 25 parts of composite microbial inoculum.
Wherein the compound microbial inoculum is bacillus subtilis, bacillus licheniformis and bacillus thuringiensis; in the composite microbial inoculum, the number of bacillus subtilis colonies is 7 hundred million cfu/g, the number of bacillus licheniformis colonies is 15 hundred million cfu/g, and the number of bacillus thuringiensis colonies is 7 hundred million cfu/g. Humic acid is ammonium humate and biogas fertilizer; the mass ratio of the ammonium humate to the biogas fertilizer is 1: 1.
The preparation method of the organic fertilizer comprises the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in magnetic fields of 2500 gauss and 800 gauss, crushing and sieving to obtain 15-mesh slag powder;
(2) mixing sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) mixing humic acid and nitric acid, heating to 84 ℃, preserving heat for 1.5h, then adding the slag powder obtained in the step (1), the mixture powder obtained in the step (2), corn straw powder, vermiculite, perlite, diatomite and a composite microbial inoculum, fermenting for 6d at the temperature of 65 ℃, turning once every 12h during fermentation, and drying and granulating to obtain the organic fertilizer.
Comparative example 3
The organic fertilizer comprises the following components in parts by weight: 60 parts of high-titanium blast furnace slag, 100 parts of corn straw powder, 10 parts of 50-mesh vermiculite, 15 parts of 45-mesh perlite, 18 parts of diatomite, 22 parts of humic acid, 7 parts of nitric acid, 25 parts of sawdust, 20 parts of rice bran, 20 parts of rice hull ash, 15 parts of plant ash, 20 parts of chicken manure and 5 parts of bacillus subtilis.
Wherein, the humic acid is ammonium humate and biogas fertilizer; the mass ratio of the ammonium humate to the biogas fertilizer is 1: 1.
The preparation method of the organic fertilizer comprises the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in magnetic fields of 2500 gauss and 800 gauss, crushing and sieving to obtain 15-mesh slag powder;
(2) mixing chicken manure with sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) mixing humic acid and nitric acid, heating to 84 ℃, preserving heat for 1.5h, then adding the slag powder obtained in the step (1), the mixture powder obtained in the step (2), corn straw powder, vermiculite, perlite, diatomite and bacillus subtilis, fermenting for 6d at the temperature of 65 ℃, turning once every 12h during fermentation, and drying and granulating to obtain the organic fertilizer.
Carrying out tomato planting experiments on the organic fertilizers obtained in the examples 1-3 and the comparative examples 1-3 and commercial organic fertilizers for Jiahe cereals, wherein the field management is the same, and the fertilizing amount is the same; then, 20 tomatoes per acre were randomly picked, and the average individual fruit weight, average fruit diameter and acre yield were measured, and the results are shown in table 1.
TABLE 1 tomato planting Experimental results
As can be seen from the table 1, the organic fertilizer provided by the invention can promote the growth of crops, the single fruit weight, the fruit diameter and the acre yield of the obtained crops are superior to those of the commercial bacterial fertilizers, the organic fertilizer can enhance the soil fertility and promote the growth of the crops, so that the soil components are more stable, the organic fertilizer has stronger capability of promoting the growth and development of the crops, and the quality and the yield of the crops are improved.
While the present invention has been described in detail with reference to the specific embodiments thereof, it should not be construed as limited by the scope of the present patent. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (10)
1. The application of the high titanium blast furnace slag in organic fertilizer.
2. The organic fertilizer is characterized by comprising the following components in parts by weight: the high titanium blast furnace slag of claim 1 comprises 50-70 parts of high titanium blast furnace slag, 80-120 parts of corn straw powder, 5-15 parts of vermiculite, 10-20 parts of perlite, 10-25 parts of diatomite, 15-40 parts of humic acid, 5-10 parts of nitric acid, 20-30 parts of wood chips, 15-25 parts of rice bran, 15-25 parts of rice hull ash, 10-20 parts of plant ash, 10-30 parts of chicken manure and 20-30 parts of composite microbial inoculum.
3. The organic fertilizer as claimed in claim 2, which comprises the following components in parts by weight: the high titanium blast furnace slag of claim 1, which comprises 60 parts of high titanium blast furnace slag, 100 parts of corn straw powder, 10 parts of vermiculite, 15 parts of perlite, 18 parts of diatomite, 22 parts of humic acid, 7 parts of nitric acid, 25 parts of sawdust, 20 parts of rice bran, 20 parts of rice hull ash, 15 parts of plant ash, 20 parts of chicken manure and 25 parts of composite microbial inoculum.
4. The organic fertilizer as claimed in claim 2 or 3, wherein the complex microbial inoculum comprises bacillus subtilis, bacillus licheniformis and bacillus thuringiensis.
5. The organic fertilizer as claimed in claim 2 or 3, wherein the mesh number of the vermiculite is 40-60 meshes, and the mesh number of the perlite is 40-50 meshes.
6. The organic fertilizer according to claim 2 or 3, wherein the humic acid is at least one of ammonium humate, potassium humate and biogas fertilizer.
7. A method for preparing the organic fertilizer as claimed in any one of claims 2 to 6, which is characterized by comprising the following steps:
(1) respectively magnetically separating the high-titanium blast furnace slag in 3000 Gauss 2000-sand and 1000 Gauss 500-sand magnetic fields, crushing and sieving to obtain slag powder;
(2) mixing chicken manure with sawdust, rice bran, rice hull ash and plant ash, drying and crushing to obtain mixture powder;
(3) mixing humic acid and nitric acid, heating to 80-90 ℃, preserving heat for 1-2h, then adding the slag powder obtained in the step (1), the mixture powder obtained in the step (2), corn straw powder, vermiculite, perlite, diatomite and a composite microbial inoculum, fermenting for 4-8d at the temperature of 50-80 ℃, and then drying and granulating to obtain the organic fertilizer.
8. The method for preparing the organic fertilizer according to claim 7, wherein in the step (1), the mesh number of the slag powder is 10-20 meshes.
9. The method for preparing the organic fertilizer according to claim 7, wherein in the step (3), the mesh number of the organic fertilizer is 60-90 meshes.
10. The method for preparing organic fertilizer according to claim 7, wherein in the step (3), the pile is turned every 12h during fermentation.
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Cited By (1)
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| CN113929333A (en) * | 2021-10-29 | 2022-01-14 | 攀枝花环业冶金渣开发有限责任公司 | Concrete aggregate containing high-titanium blast furnace slag and preparation method thereof |
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