CN1178780A - Multiple element composite fertilizer and its preparing method - Google Patents
Multiple element composite fertilizer and its preparing method Download PDFInfo
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- CN1178780A CN1178780A CN 97103558 CN97103558A CN1178780A CN 1178780 A CN1178780 A CN 1178780A CN 97103558 CN97103558 CN 97103558 CN 97103558 A CN97103558 A CN 97103558A CN 1178780 A CN1178780 A CN 1178780A
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 32
- 239000002131 composite material Substances 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims description 45
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 12
- 239000005696 Diammonium phosphate Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 11
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 11
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 11
- 239000001103 potassium chloride Substances 0.000 claims description 11
- 235000011164 potassium chloride Nutrition 0.000 claims description 11
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 9
- 150000003751 zinc Chemical class 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 6
- 150000002505 iron Chemical class 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical group [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 4
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 235000010333 potassium nitrate Nutrition 0.000 claims description 3
- 239000004323 potassium nitrate Substances 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- 239000001506 calcium phosphate Substances 0.000 claims description 2
- 235000011010 calcium phosphates Nutrition 0.000 claims description 2
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 claims description 2
- IMBKASBLAKCLEM-UHFFFAOYSA-L ferrous ammonium sulfate (anhydrous) Chemical compound [NH4+].[NH4+].[Fe+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O IMBKASBLAKCLEM-UHFFFAOYSA-L 0.000 claims description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
- 239000006012 monoammonium phosphate Substances 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 2
- 239000002426 superphosphate Substances 0.000 claims description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 2
- 229960001763 zinc sulfate Drugs 0.000 claims description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 7
- 229910052725 zinc Inorganic materials 0.000 abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 4
- 229910052700 potassium Inorganic materials 0.000 abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract 1
- 239000011701 zinc Substances 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 5
- 240000008042 Zea mays Species 0.000 description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 235000005822 corn Nutrition 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- -1 polyethylene methanol Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 244000291564 Allium cepa Species 0.000 description 1
- 235000002732 Allium cepa var. cepa Nutrition 0.000 description 1
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910005390 FeSO4-7H2O Inorganic materials 0.000 description 1
- 229910005444 FeSO4—7H2O Inorganic materials 0.000 description 1
- 235000019733 Fish meal Nutrition 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002374 bone meal Substances 0.000 description 1
- 229940036811 bone meal Drugs 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000004467 fishmeal Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 235000019691 monocalcium phosphate Nutrition 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
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- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Metallurgical dregs is first treated to eliminate iron, crushed and acid treated, and then mixed with N, P and K elements or Fe and Zn elements to produce multiple element composite fertilizer. The said multiple element composite fertilizer has nutritigve components easy to absorb by plant and is suitable for slightly alkali soil and slightly acid soil.
Description
The present invention belongs to the field of fertilizer production, and is especially one kind of multielement composite fertilizer and its production process.
The treatment of metallurgical solid waste is a long-term concern of people, at present, people at home and abroad use metallurgical slag to manufacture fertilizer, the Su Union patent Su 150427 adds phosphate ore at the temperature of 1200 ℃ of molten slag, and the Brazilian patent BR 8903714 adds phosphorus, silicon, magnesium and potassium at the temperature of 1200 ℃ of molten slag to manufacture fertilizer. Japanese patent J50627717 and British patent GB 1179246 disclose that fertilizer components are added in smelting to prepare fertilizers, the chemical treatment on metallurgical slag is not carried out in the methods, and most of the fertilizers belong to the molecular structure of portland cement and are not easily absorbed by plants. In order to overcome the above disadvantages, the metallurgical slag is treated with acid to prepare fertilizer. For example, Japanese patent J01168791 discloses a lawn soil improving material, which is prepared by adding acidic materials and fertilizers into converter slag as main raw materials, wherein the acidic materials are nitric acid, hydrochloric acid, sulfuric acid, citric acid and the like, the fertilizers are nitrogen fertilizers, phosphorus fertilizers, potassium fertilizers, fish meal and bone meal, and a small amount of polyethylene methanol cellulose, carboxylic acid methanol cellulose and the like are added during the preparation. Has the defects of high cost, alkalinity, unsuitability for alkaline soil, availability of converter slag and single raw material.
The invention aims to provide a multi-element compound fertilizer which has low cost and wide raw materials and is suitable for slightly alkaline or slightly acidic soil and a preparation method thereof.
The present invention uses metallurgical slag as basic material, and through mechanical processing, acidification treatment and addition of N, P and K elements or Fe and Zn elements, multielement composite fertilizer is produced.
The reaction principle of the metallurgical slag after acidification treatment is as follows:
therefore, the silicon, the calcium, the magnesium and the salt are changed into soluble salts which are easy to be absorbed by plants, the fertilizer efficiency is increased, and meanwhile, the iron, the manganese, the copper, the zinc, the boron, the vanadium and the like are also released from interstitial solid solutions, and the reaction is as follows:
thus, the trace elements in the metallurgical slag become effective plant nutrient components.
The multi-element compound fertilizer comprises the following components (by weight percentage):
the composition is as follows: the composition is two:
46-55% of metallurgical slag and 46-55% of metallurgical slag
20-26% of urea and 28-35% of inorganic iron salt
14 to 21 percent of diammonium phosphate and 14 to 22 percent of inorganic zinc salt
3 to 9 percent of potassium chloride
The metallurgical slag as described above may be converter slag, open-hearth slag, blast furnace slag, fly ash.
The diammonium phosphate as described above may be replaced by monoammonium phosphate, calcium phosphate or superphosphate.
The potassium chloride can be replaced by potassium oxide, potassium sulfate, and potassium nitrate.
The inorganic iron salt is ferric nitrate, ferric sulfate, ferric chloride or ferrous ammonium sulfate.
The inorganic zinc salt as described above is zinc sulfate, zinc nitrate, zinc oxide.
The preparation method comprises the following steps:
removing iron from metallurgical slag, crushing into 80-100 meshes, adding acid accounting for 40-60% of the total amount of the metallurgical slag, stirring for reaction for 3-5 minutes, controlling the pH value of liquid to be 5.0-6.0, carrying out blank sealing for 1-2 days, taking out materials, drying at the temperature of 30-40 ℃, adding the required materials according to the components, uniformly mixing, and crushing into 80-100 meshes to obtain a qualified product.
The acid as described above may be spent sulfuric acid, sulfuric acid; waste nitric acid and nitric acid; waste phosphoric acid, phosphoric acid.
Theinvention has the following advantages:
1. the nutrient components of the fertilizer are easy to be absorbed by plants.
2. The raw material source is wide.
3. The cost is low.
4. Simple process and no waste.
5. The application range is wide, and the method is suitable for alkaline soil and acidic soil.
The preferred embodiment of the present invention is as follows:
example 1
Deironing and crushing converter slag into 80-100 meshes, adding waste sulfuric acid and sulfuric acid accounting for 40% of the total amount of slag, stirring and reacting for 5 minutes, controlling the pH value of liquid to be 5.0, then carrying out slag sealing for 2 days, taking out the slag, drying at the temperature of 30-40 ℃, uniformly mixing and crushing into 80-100 meshes according to the proportion of 47% of slag, 26% of urea, 19% of diammonium phosphate and 8% of potassium chloride to obtain a qualified product, wherein the effective content (weight percentage) of the product is 33.47%, wherein N is 16.71, P is 16.78%, and the effective content (weight percentage) of the product is2O5％＝11.70，K2O％＝5.05。
Example 2
The mixture ratio is changed into 49 percent of slag, 26 percent of urea, 21 percent of diammonium phosphate and 4 percent of potassium chloride, and the rest is the same as the embodiment 1. The effective content of the product is 32.72 percent, wherein N percent is 17.26 percent, P2O5 percent is 12.94 percent, and K2O percent is 2.25 percent.
Example 3
The converter slag is changed into open-hearth slag, the slag amount is 50 percent, the urea is 20 percent, the diammonium phosphate is 21 percent, the potassium chloride is 9 percent, the rest is the same as the embodiment 1, the effective content of the product is 30.48 percent, wherein, the N percent is 11.19 percent, and the P percent is 11.19 percent2O5％＝12.94，K2O％＝5.68。
Example 4
The process is carried out by changing waste sulfuric acid and sulfuric acid into nitric acid and changing pH into 5.5, changing the mixture ratio into slag 46%, ammonium nitrate 24%, superphosphoric calcium 21%, potassium nitrate 9%, and the rest is the same as example 1. The effective content is 25.21%, wherein N%2O5％＝11.83，K2O％＝3.72。
Example 5
The converter slag is changed into blast furnace slag, the total acid content is changed into 45 percent, the slag content is 50 percent, the urea content is 25 percent, the diammonium phosphate is 19 percent, the potassium chloride content is 6 percent, the rest is the same as the example 1, the effective content of the product is 29.44 percent, wherein, the N percent is 13.95, and the P percent is 13.952O5％＝11.71，K2O％＝3.79。
Example 6
The total amount of the added acid is changed to 55%, the stirring reaction is carried out for 3-5 minutes, the pH value of the liquid is controlled to be 5.8, the proportioning slag is 51%, the urea is 20%, the diammonium phosphate is 20%, the potassium chloride is 9%, and the rest is the same as the example 3. The effective content of the product is 29.74 percent, wherein N percent is 11.74 percent, and P2O5％＝12.32，K2O％＝5.68。
Example 7
The acid was changed to waste phosphoric acid and phosphoric acid, the total amount of the added acid was 60%, the pH of the liquid was controlled to 6.0, the proportioning residue was 55%, urea 21%, diammonium phosphate 16%, potassium chloride 8%, and the rest was the same as in example 5. The effective content of the product is 26.63 percent, wherein N percent is 11.73, and P2O5％＝9.86，K2O％＝5.05。
Example 8
The mixture ratio is changed into 53 percent of slag, 25 percent of urea, 16 percent of diammonium phosphate and 6 percent of potassium chloride, and the rest is the same as the embodiment 3. The effective content of the product is 27.27%, wherein N%2O5％＝9.87，K2O％＝3.79。
Example 9
The mixture ratio is changed into 46 percent of slag and FeSO4-7H2O 34％，ZnSO4-7H2O20%, the same as in example 1. The effective content of the product is 12.44%Wherein Fe% ═ 7.24, Zn% ═ 5.2
Example 10
The mixture ratio is changed into 47 percent of slag, 35 percent of iron salt and 18 percent of zinc salt, and the rest is the same as the example 1. The effective content of the product is 12.13 percent, wherein the Fe percent is 7.45 percent, and the Zn percent is 4.68 percent.
Example 11
The mixture ratio is changed into 48 percent of slag, 35 percent of iron salt and 17 percent of zinc salt, and the rest is the same as the example 4. The effective content of the product is 11.87%, wherein Fe% ═ 7.45 and Zn% ═ 4.42.
Example 12
The mixture ratio was changed to 51% of slag, 35% of iron salt and 14% of zinc salt, and the rest was the same as in example 5. The effective content of the product is 11.09%, wherein Fe% ═ 7.45 and Zn% ═ 3.64.
Example 13
The mixture ratio was changed to 53% of slag, 33% of iron salt and 19% of zinc salt, and the rest was the same as in example 6. The effective content of the product is 10.85%, wherein Fe% ═ 7.21%, Zn% ═ 3.64.
Example 14
The mixture ratio is changed into 55 percent of slag, 31 percent of ferric salt and 14 percent of zinc salt, and the rest is the same as the example 7. The effective content of the product is 10.24%, wherein Fe% ═ 6.60%, Zn% ═ 3.64.
The invention is applied to crops as follows:
| test field area | Area of test field | The crop yield is increased | Backup note |
| Huairen Jinsandbeach town Xinzhou Jieyuan Zhen Yu Zi Dong Yang Zhen Xiangfen Zhao Quxiang South county of Sichuan province Huairen Jinsandbeach town Yu Zi Dong Yang Zhen Xiangfen Zhao Quxiang Xiangfen Zhao Quxiang | 400 400 110 48 4 100 120 56 144 | Corn yield increase 19.9 Corn yield increase 16.2 Corn yield increase 15.9 Corn yield increase 12.3 Yield of rice is increased by 17.5 Beet 14.13 Onion 22.60 Peanut 57.90 17.30 Cotton | (1) Strong ability of resisting plant diseases and insect pests (2) Precocity for 3-8 days (3) South county of Sichuan province Large plateau area, eternal definition Zone, east dam zone |
Claims (10)
1. A multi-element compound fertilizer is characterized by comprising the following components in percentage by weight:
46-55% of metallurgical slag and 20-26% of urea
14 to 21 percent of diammonium phosphate and 3 to 9 percent of potassium chloride
2. A multi-element compound fertilizer is characterized by comprising the following components in percentage by weight:
46-55% of metallurgical slag and 28-35% of inorganic ferric salt
14 to 22 percent of inorganic zinc salt
3. A multi-element compound fertilizer as claimed in claim 1 or 2, characterized by that said metallurgical slag can be converter slag, open-hearth slag, blast furnace slag.
4. The multi-element compound fertilizer as claimed in claim 1, wherein said diammonium phosphate is replaced by monoammonium phosphate, calcium phosphate, superphosphate.
5. The multi-element compound fertilizer as claimed in claim 1, wherein said potassium chloride is replaced by potassium oxide or potassium nitrate.
6. The multi-element compound fertilizer as claimed in claim 2, wherein said inorganic ferric salt is selected from the group consisting of ferric nitrate, ferric sulfate, ferric chloride, and ferrous ammonium sulfate.
7. The multi-element compound fertilizer as claimed in claim 2, wherein said inorganic zinc salt is zinc nitrate, zinc sulfate, zinc oxide.
8. A process for preparing multi-element composite fertilizer as claimed in claim 1, wherein the iron is removed from metallurgical dregs, and is crushed to 80-100 meshes, and after adding acid accounting for 40-60% of the total amount of metallurgical dregs and stirring for reaction for 3-5 min, the pH value of liquid is controlled to 5.0-6.0, and then the mixture is sealed for 1-2 days, and the mixture is taken out and dried at 30-40 ℃, and the required materials are added according to the above-mentioned composition, mixed uniformly and crushed to 80-100 meshes to obtain the product.
9. A process for preparing multi-element composite fertilizer as claimed in claim 2, wherein the iron is removed from metallurgical dregs, and is crushed to 80-100 meshes, and after adding acid accounting for 40-60% of the total amount of metallurgical dregs and stirring for reaction for 3-5 min, the pH value of liquid is controlled to 5.0-6.0, and then the mixture is sealed for 1-2 days, and the mixture is taken out and dried at 30-40 ℃, and the required materials are added according to the above-mentioned composition, mixed uniformly and crushed to 80-100 meshes to obtain the product. Adding iron salt and zinc salt according to the composition, mixing uniformly, and crushing to 80-100 meshes to obtain the product.
10. The method for producing a multi-element compound fertilizer according to claim 1 or 2, wherein said acid is selected from the group consisting of waste sulfuric acid, sulfuric acid; waste nitric acid and nitric acid; waste phosphoric acid, phosphoric acid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97103558 CN1178780A (en) | 1997-04-22 | 1997-04-22 | Multiple element composite fertilizer and its preparing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97103558 CN1178780A (en) | 1997-04-22 | 1997-04-22 | Multiple element composite fertilizer and its preparing method |
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| Publication Number | Publication Date |
|---|---|
| CN1178780A true CN1178780A (en) | 1998-04-15 |
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| CN 97103558 Pending CN1178780A (en) | 1997-04-22 | 1997-04-22 | Multiple element composite fertilizer and its preparing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8811137B2 (en) | 2005-02-16 | 2014-08-19 | Mitsubishi Electric Corporation | Optical disc and optical disc device |
| CN105052497A (en) * | 2015-08-19 | 2015-11-18 | 颍上县小张庄农业科技有限公司 | Planting method for corn in northern region of Fuyang |
| CN107006356A (en) * | 2017-05-22 | 2017-08-04 | 青海顺泰农牧开发有限公司 | A kind of blast furnace granulated slag soilless culture substance and preparation method thereof |
-
1997
- 1997-04-22 CN CN 97103558 patent/CN1178780A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8811137B2 (en) | 2005-02-16 | 2014-08-19 | Mitsubishi Electric Corporation | Optical disc and optical disc device |
| US8873359B2 (en) | 2005-02-16 | 2014-10-28 | Mitsubishi Electric Corporation | Optical disc and optical disc device |
| CN105052497A (en) * | 2015-08-19 | 2015-11-18 | 颍上县小张庄农业科技有限公司 | Planting method for corn in northern region of Fuyang |
| CN107006356A (en) * | 2017-05-22 | 2017-08-04 | 青海顺泰农牧开发有限公司 | A kind of blast furnace granulated slag soilless culture substance and preparation method thereof |
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