CN1125799C - Fertilizer for deseritified field and its production process - Google Patents
Fertilizer for deseritified field and its production process Download PDFInfo
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- CN1125799C CN1125799C CN 99117441 CN99117441A CN1125799C CN 1125799 C CN1125799 C CN 1125799C CN 99117441 CN99117441 CN 99117441 CN 99117441 A CN99117441 A CN 99117441A CN 1125799 C CN1125799 C CN 1125799C
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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
- C05G1/00—Mixtures of fertilisers belonging individually to different subclasses of C05
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Abstract
The present invention relates to a fertilizer for desertification land and a production method thereof. The method comprises phosphate ore crushing, ball milling, mixture with sulfuric acid, formation and maturing, wherein a rare earth compound, a calcium compound and/or a magnesium compound are added into the ball milling step and/or the mixture step and/or the formation step; a product matured is mixed with a nitrogen fertilizer, a potassium fertilizer, a micronutrient fertilizer and a water absorptive substance so that the fertilizer of the present invention is obtained. The fertilizer produced in the method of the present invention has good effect when applied to the desertification land. The fertilizer produced in the method of the present invention performs the positive actions of moisture retention, fertilizer preservation and soil improvement. The fertilizer of the present invention has the advantages of fruit yield increase, fruit quality improvement and crop adversity resistance enhancement.
Description
The method that the present invention relates to fertilizer for deseritified field and produce this fertilizer.
Unconcerned condition district accounts for 1/5th of China's total area, comprises a part or the major part of provinces (district) such as Xinjiang, Gansu, the Inner Mongol, Qinghai and Ningxia.These area arids are short of rain, and evaporation is strong, and it is serious to desertify, and the total characteristic of soil is that the thick pine of quality, pH are high, is rich in lime carbonate, organic matter and available nutrient deficiency, has influenced the raising of soil productivity to a certain extent.But these area long, heat foots at sunshine, if any abundant icy water and groundwater resource, if any the fertilizer that is suitable for, these geographic agriculturals have very fast development.
Although people make great efforts to seek to develop this area agricultural, do not make substantial progress.
The applicant has made a large amount of enquiry based works for this reason, finds that rare earth element has special effect to the sprouting of plant seed and the growth of root; The proper concn rare earth element can promote plant to nutrient absorbing, conversion and utilization; Prove that also rare earth element has tangible influence to photosynthesis of plants; Rare earth element can strengthen resistance and the disease resistance of crop, and therefore, rare earth can not only improve the output of crop, can also improve its quality.
In addition, as noted earlier, unconcerned condition district climatic characteristic is that arid is short of rain, and evaporation is strong, and moisture content becomes an extremely important factor of restriction crop normal growth and agricultural development.
The applicant is surprised to find, rare-earth compound, chemical fertilizer and water-absorbent material are organically combined use, in desertification ground, can give play to unexpected effect, not only can obtain higher yield of crops, and can also improve physics, chemistry and the biological property of saline-alkali soil.
This discovery has constituted basis of the present invention.
Therefore, the object of the present invention is to provide a kind of fertilizer (being commonly called as the Sha Ling that disappears) of the ground that is used to desertify.
Another object of the present invention is to provide a kind of production method of above-mentioned fertilizer.
The present invention realizes like this by add various raw materials such as rare earth compound in existing general calcium Production Flow Chart:
A kind of production method of fertilizer of deseritified field, this method comprises Rock Phosphate (72Min BPL) fragmentation, ball milling, mixes, changes into and maturation stage with sulfuric acid, it is characterized in that in ball milling and/or mixing and/or change into adding rare earth compound, calcium cpd and/or magnesium compound in the step, the product after the slaking and nitrogenous fertilizer, potash fertilizer, micronutrient fertiliser and water-absorbent material are by weight 45-60: 22-40: 8-14: 0.05 one 0.5, and: 1-10 mixes and just obtains described fertilizer.
Described rare earth compound is mixed rare earth compound or single rare earth compound, can be mishmetal mineral compound or organic compound, single rare earth mineral compound or organic compound, rare earth chloride, nitrate, vitriol, carbonate or acetate specifically, Lanthanum trichloride, lanthanum nitrate, lanthanum sulfat or Phosbloc, perhaps Cerium II Chloride, cerous nitrate, cerous sulfate, cerous carbonate, lanthanum acetate or cerous acetate more specifically; Described rare earth compound can also be mixed rare-earth oxide or single rare earth oxide compound, specifically is lanthanum trioxide or cerium oxide etc.
Preferably, rare upward compound is a mixed rare earth compound, specifically rare earth nitrate, vitriol, carbonate, mixed rare-earth oxide or single rare earth oxide compound.
More preferably, rare earth compound is rare earth nitrate, mixed rare-earth oxide or single rare earth oxide compound.
Described calcium cpd is inorganic calcium compound or organic calcium compound, as calcium oxide, calcium chloride, nitrocalcite, lime carbonate or Wingdale, calcium sulfate, calcium hydroxide or calcium acetate.
Preferably, described calcium cpd is the inorganic calcium compound, specifically nitrocalcite, lime carbonate, calcium sulfate or calcium chloride.
More preferably, calcium cpd is lime carbonate or nitrocalcite.
Described magnesium compound is inorganic magnesium compound or organo-magnesium compound, specifically magnesium oxide, magnesium chloride, magnesium nitrate, magnesiumcarbonate, sal epsom, magnesium hydroxide or magnesium acetate.
Preferably, described magnesium compound is inorganic magnesium compound, specifically magnesium nitrate, magnesiumcarbonate, sal epsom or magnesium chloride.
More preferably, magnesium compound is magnesiumcarbonate or magnesium nitrate.
The add-on that described rare earthization contains thing, calcium cpd and magnesium compound is respectively 0.16-2.5%, 1.5-40% and 1.5-40% in Rock Phosphate (72Min BPL) weight.
Preferably, the add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.16-1.6%, 1.5-32% and 1.5-32% in Rock Phosphate (72Min BPL) weight.
More preferably, the add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.2-1.4%, 1.5-24% and 1.5-24% in Rock Phosphate (72Min BPL) weight.
Described nitrogenous fertilizer is ammonium chloride, ammonium nitrate, bicarbonate of ammonia, ammonium sulfate or urea.
Described potash fertilizer is Repone K, saltpetre, vitriolate of tartar or potassium primary phosphate.
Described micronutrient fertiliser is a normally used trace element fertilizer in the fertilizer, and zinc, copper, manganese, molybdenum and boron compound specifically are as zinc sulfate, zinc oxide or zinc carbonate; Copper sulfate or chalcopyrite; Manganous sulfate, manganese oxide, Manganous chloride tetrahydrate or Manganse Dioxide; Ammonium molybdate, Sodium orthomolybdate or molybdic oxide; Borax, boric acid or Sodium Tetraborate.The weight ratio of described zinc, copper, manganese, molybdenum and boron compound is 2-5: 0.1-0.5; 0.2-1.0: 0.1-0.5: 0.2-1.0.
Described absorbent material is organic absorbent material or inorganic absorbent material, and these absorbent materials can be natural, also can be synthetic.The water regain of absorbent material is that absorbent material weight is more than 100 times, more preferably more than 250 times, it is Powdered that absorbent material is, its granularity generally is the 0.001-0.1 millimeter, more preferably be the 0.001-0.01 millimeter, absorbent material should be near neutral, and pH is 6-8 particularly, 6.5-7.5 preferably, all absorbent materials that satisfies above-mentioned requirements may be used to the present invention.
Particularly, absorbent material of the present invention is selected from crosslink propylene hydrochlorate, starch graft acrylic acid, starch-grafted vinyl cyanide, carboxymethyl cellulose, polyvinyl alcohol acrylic copolymer, molecular sieve or zeolite, and one or more mixtures in them.
A kind of fertilizer that adopts method for preparing is characterized in that this fertilizer contains in by weight of fertilizer nitrogen 10-14%, phosphorus (with P
2O
5Expression) 8%-10%, potassium are (with K
2The O meter) 4-7%, rare earth (in oxide compound) 0.05%-0.60% and micronutrient element 0.05-0.4%.
Embodiment of the present invention will be described in detail belows.
The present invention utilizes manufacturings such as sulfuric acid decomposing phosphate rock stone and rare-earth compound to contain the fertilizer of rare earth element.
Rock Phosphate (72Min BPL) is (with P
2O
5The meter phosphorus content is 28%-35%) at first through fragmentation, control size is delivered to storage hopper below 30 millimeters, adds the water wet-milling by feeding machine by certain speed goal grinding machine, and it is about ore pulp more than 28% that Rock Phosphate (72Min BPL) is worn into water content.Ore pulp after the grinding enters vibratory screening apparatus from the overflow of grinding machine afterbody, tails over macrobead and returns grinding machine, and ore pulp that sieves and concentration are that 93% to 98% vitriol oil measures mixedization of inflow chamber, back respectively.Sulfuric acid and Rock Phosphate (72Min BPL) are the liquid-solid two-phase reaction, and be just fast more, complete more as the thin more reaction of ore powder, can shorten mixing like this, change into and the curing time, can obtain higher transformation efficiency.Too thick as mineral dust, decompose not exclusively because of the package action of calcium sulfate makes ore, yet the meticulous throughput that must reduce disintegrating apparatus of breeze increases the production cost of power consumption and breeze simultaneously, therefore, should control the Rock Phosphate (72Min BPL) granularity during grinding is that 100 orders account for 90-95%.Per 100 weight part Rock Phosphate (72Min BPL) need add 50-60 weight part 93-98% sulfuric acid.
Described sulfuric acid generally is industrial sulphuric acid, but also can use as a large amount of sulfur waste acid of discharging in other chemical engineering processes, so not only can reduce the production cost of this phosphate fertilizer, all right utilize resources synthetically and minimizing environmental pollution, contain in the spent acid the deleterious impurity of farm crop but must control, can not adopt as the foreign matter content higher position, low for foreign matter content and spent acid that sulfuric acid concentration is also low can get up to use with the industrial sulphuric acid fusion.
Rock Phosphate (72Min BPL) slurry and sulfuric acid mixing 1-2 minute are sent into behind the mixing again and are changed into the chamber, and material is the normally 0.5-1 hour residence time in changing into the chamber.Material change into indoor temperature can be up to 110-130 ℃, reduce temperature and help the monocalcium phosphate crystallization, therefore the time of changing into can not be oversize.
The material that is drawn off by the chamber of changing into enters the slaking storehouse again, its temperature of charge is 80-90 ℃, the material curing temperature should decompose complexity according to Rock Phosphate (72Min BPL), foreign matter content and processing condition thereof determine that common curing temperature is 30-80 ℃, and is low excessively as curing temperature, speed of response is slowed down, moisture evaporation reduces, and must prolong the curing time, obviously is disadvantageous.Therefore, need usually to carry out turning according to curing temperature.
Slaking early stage, free acid descends and transformation efficiency improves than very fast, and later gradual slow is constant substantially at last, common curing time 7-10 days.
In above-mentioned the inventive method, rare earth compound, calcium cpd can and/or mix and/or change in the step with magnesium compound and add at ball milling.
Described rare earth compound is mixed rare earth compound or single rare earth compound, can be mishmetal mineral compound or organic compound, single rare main mineral compound or organic compound, rare earth chloride, nitrate, vitriol, carbonate or acetate, Lanthanum trichloride, lanthanum nitrate, lanthanum sulfat, Phosbloc, Cerium II Chloride, cerous nitrate, cerous sulfate, cerous carbonate, lanthanum acetate or cerous acetate more specifically specifically; Described rare earth compound can also be mixed rare-earth oxide or single rare earth oxide compound, specifically is lanthanum trioxide or cerium oxide etc.
Preferably, rare earth compound is a mixed rare earth compound, specifically rare earth nitrate, vitriol, carbonate, mixed rare-earth oxide or single rare earth oxide compound.
More preferably, rare earth compound is rare earth nitrate, mixed rare-earth oxide or single rare earth oxide compound.
Described calcium cpd is inorganic calcium compound or organic calcium compound, as calcium oxide, calcium chloride, nitrocalcite, lime carbonate or Wingdale, calcium sulfate, calcium hydroxide or calcium acetate.
Preferably, described calcium cpd is the inorganic calcium compound, specifically nitrocalcite, lime carbonate, calcium sulfate or calcium chloride.
More preferably, calcium cpd is lime carbonate or nitrocalcite.
Described magnesium compound is inorganic magnesium compound or organo-magnesium compound, specifically magnesium oxide, magnesium chloride, magnesium nitrate, magnesiumcarbonate, sal epsom, magnesium hydroxide or magnesium acetate.
Preferably, described magnesium compound is inorganic magnesium compound, specifically magnesium nitrate, magnesiumcarbonate, sal epsom or magnesium chloride.
More preferably, magnesium compound is magnesiumcarbonate or magnesium nitrate.
The add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.16-2.5%, 1.5-40% and 1.5-40% in Rock Phosphate (72Min BPL) weight.
Preferably, the add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.16-1.6%, 1.5-32% and 1.5-32% in Rock Phosphate (72Min BPL) weight.
More preferably, the add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.2-1.4%, 1.5-24% and 1.5-24% in Rock Phosphate (72Min BPL) weight.
Product after the slaking again with nitrogenous fertilizer, potash fertilizer, micronutrient fertiliser and water-absorbent material by weight 45-60: 22-40: 8-14: 0.05-0.5: 1-10 mixes, and just obtains described fertilizer,
Described nitrogenous fertilizer is ammonium chloride, ammonium nitrate, bicarbonate of ammonia, ammonium sulfate or urea.
Described potash fertilizer is Repone K, saltpetre, vitriolate of tartar or potassium primary phosphate.
Described micronutrient fertiliser is a normally used trace element fertilizer in the fertilizer, and zinc, copper, manganese, molybdenum and boron compound specifically are as zinc sulfate, zinc oxide or zinc carbonate; Copper sulfate or chalcopyrite; Manganous sulfate, manganese oxide, Manganous chloride tetrahydrate or Manganse Dioxide; Ammonium molybdate, Sodium orthomolybdate or molybdic oxide; Borax, boric acid or Sodium Tetraborate.The weight ratio of described zinc, copper, manganese, molybdenum and boron compound is 2-5: 0.1-0.5: 0.2-1.0: 0.1-0.5: 0.2-1.0.
Described absorbent material is organic absorbent material or inorganic absorbent material, and these absorbent materials can be natural, also can be synthetic.The water regain of absorbent material is that absorbent material weight is more than 100 times, more preferably more than 250 times, it is Powdered that absorbent material is, its granularity generally is the 0.001-0.1 millimeter, more preferably be the 0.001-0.01 millimeter, absorbent material should be near neutral, and pH is 6-8 particularly, 6.5-7.5 preferably, all absorbent materials that satisfies above-mentioned requirements may be used to the present invention.
Particularly, absorbent material of the present invention is selected from crosslink propylene hydrochlorate, starch graft acrylic acid, starch-grafted vinyl cyanide, carboxymethyl cellulose, polyvinyl alcohol acrylic copolymer, molecular sieve or zeolite, and one or more mixtures in them.
A kind of fertilizer that adopts method for preparing is characterized in that this fertilizer contains in by weight of fertilizer nitrogen 10-14%, phosphorus (with P
2O
5Meter) 8%-10%, potassium are (with K
2The O meter) 4-7%, rare earth element (in oxide compound) 0.05%-0.60% and micronutrient element 0.05-0.4%.
The equipment that uses in fertiliser production of the present invention all is the equipment that normal superphosphate production is used.
The present invention has following positively effect:
1, fertilizer of the present invention through in North China, ground tests such as northeast, Ningxia, Xinjiang, application effect is excellent on the ground desertifying.Compare with U.S.'s phosphorus ammonium of equivalence, cotton, the comparison of oily certain herbaceous plants with big flowers cash crop amount of increase in production are according to high more than 50%, and the comparison of food crop output amounts of increase in production such as corn, paddy rice, wheat is according to doubling, and vegetable and fruit is higher.Compare with general calcium, also have same effect.
2, fertilizer of the present invention has water conservation, protects active effect fertile and that improve the soil.Confirm through a large amount of ground tests of desertifying; after using fertilizer of the present invention; crop root is flourishing especially; compare with general calcium with the phosphorus ammonium; the root of the crop amount can increase 1-2 doubly, because a large amount of organism of root system secretion, rhizospheric microorganism is very active; with the naked eye can observe a large amount of mycelium of appearance in the soil, and contrast fertilizer is to be difficult to find.Therefore, use after the fertilizer of the present invention, soil property is soft, and organic and microorganism rolls up, and has improved soil fertility like this, has improved physics, chemistry and the biological property of soil.
3, use fertilizer of the present invention in the ground of desertifying and to promote the crop root prosperity, also strengthened the photosynthesis of crop, the crop plant growth is strong, compare with phosphorus ammonium, general calcium, the plant mean height is more than 20%, therefore crop has very strong resistivity for the poor environment of arid, high temperature, low temperature, saline and alkaline, disease and pest and so on, has promptly improved the resistance of crop.
4, use confirmation through various places in the ground of desertifying, use the quality that fertilizer of the present invention can improve fruit.As make the V of apple
CThe content total sugar content increases, and can promote fruit color and precocity, but more than 15 days, the quality (as protein content) of corn is improved as the strawberry premature ripening, and output improves.
Illustrate in greater detail the present invention below in conjunction with embodiment
Embodiment 1
At first take by weighing 1 ton of P
2O
5Content is the Rock Phosphate (72Min BPL) of 28% (weight), normally used crusher is crushed to Rock Phosphate (72Min BPL) below 30 millimeters in the industry of employing phosphate fertilizer, deliver to storage hopper, add ball mill by feeding machine and add the water wet-milling, its amount of water is so that Rock Phosphate (72Min BPL) ore pulp water content is 28% (weight), grind the back ore pulp and enter vibratory screening apparatus from the overflow of grinding machine afterbody, tail over macrobead and return grinding machine, the ore grain size that sieves reaches 100 orders and accounts for 95%.The ore pulp that sieves is that 98% sulfuric acid enters mixedization chamber with concentration again, and the sulfuric acid add-on is 580 kilogram of 98% sulfuric acid, adds 3.6 kilograms of rare earth chlorides, 36 kilograms of nitrocalcite and 36 kilograms of magnesium nitrates simultaneously.
The Rock Phosphate (72Min BPL) slurry mixed with sulfuric acid 1 minute, sent into behind the mixing again and changed into the chamber, and material residence time in changing into the chamber is 0.5 hour.Material can reach 110 ℃ changing into indoor temperature.
The material that is drawn off by the chamber of changing into enters the slaking storehouse again, adopts the method for turning to make its temperature of charge remain on 80 ℃, and the curing time is 8 days.Through chemical analysis, this product is phosphorous (with P
2O
5Meter) be that 15.2% (weight), rare earth element (in oxide compound) are 0.10% (weight).
Get product, vitriolate of tartar, micronutrient fertiliser and the sodium polyacrylate of urea, above-mentioned preparation then, wherein said micronutrient fertiliser is Zinc Sulphate Heptahydrate, cupric sulfate pentahydrate, manganous sulfate, ammonium molybdate and borax, they are 3: 0.1: 0.2 in anhydrous salt form weight ratio: 0.1: 0.2, and by weight 26: 54: 12: 0.1: 4 mixed product that gets 12-8-5.
Show through the ground field test results that desertifies, compare that the amount of increase in production comparison of paddy rice is according to high by 115% when using fertilizer of the present invention with phosphorus ammonium of equal value.
Embodiment 2
This embodiment implementation step is identical with embodiment 1, but is to use 8.0 kilograms of rare earth nitrate compounds, 80 kilograms of lime carbonate and 80 kilograms of magnesium nitrates.
Through chemical analysis, this product is phosphorous (with P
2O
5Meter) be that 16.0% (weight), rare earth element (in oxide compound) are 0.15% (weight).
Get product, Repone K, micronutrient fertiliser and the commercially available starch graft acrylic acid of urea, above-mentioned preparation then, wherein said micronutrient fertiliser is Zinc Sulphate Heptahydrate, cupric sulfate pentahydrate, manganese oxide, Sodium orthomolybdate and boric acid, they are 4: 0.2: 0.2 in the anhydrous form weight ratio: 0.2: 0.2, and by weight 26: 50: 10: 0.2: 5 mixed product that gets 12-8-5.
Through the ground field test that desertifies, the result shows, compares with phosphorus ammonium of equal value, and from the corn growing way, the average plant height comparison of corn from output, is used fertilizer amount of increase in production comparison of the present invention according to high by 104% according to high by 14%.
Embodiment 3
This embodiment implementation step is identical with embodiment 1, but is to use 10.0 kilograms of sulfuric acid rare earth compounds, 150 kilograms of calcium chloride and 150 kilograms of magnesium oxide.
Through chemical analysis, this product is phosphorous (with P
2O
5Meter) be that 15.5% (weight), rare earth element (in oxide compound) are 0.21% (weight).
Get product, Repone K, micronutrient fertiliser and the polyacrylic acid of urea, above-mentioned preparation then, wherein said micronutrient fertiliser is zinc oxide, cupric sulfate pentahydrate, manganous sulfate, ammonium molybdate and boric acid, they are 3: 0.3: 0.2 in the anhydrous form weight ratio: 0.2: 0.5, and by weight 26: 52: 10: 0.3: 8 mixed product that gets 12-8-5.
Through the ground field test that desertifies, the result shows, compares with the general calcium of equivalence, and the comparison of wheat increase yield amplitude is according to high by 108%.In addition, protein content also is significantly improved in the wheat.
Embodiment 4
This embodiment implementation step is identical with embodiment 1.But be to use 16.0 kilograms of carbonated rare earth compounds, 240 kilograms of calcium oxide and 240 kilograms of magnesium acetates.In addition, the sulfuric acid add-on is 1 ton of P
2O
5Content is that the Rock Phosphate (72Min BPL) of 28% (weight) is 580 kilogram of 98% sulfuric acid, and its residence time in changing into the chamber is 0.9 hour, and the curing time is 10 days, the product that makes like this, and through chemical analysis, this product is phosphorous (with P
2O
5Meter) be that 14.7% (weight), rare earth element (in oxide compound) are 0.44% (weight).
Get product, vitriolate of tartar, micronutrient fertiliser and the zeolite of urea, above-mentioned preparation then, wherein said micronutrient fertiliser is Zinc Sulphate Heptahydrate, cupric sulfate pentahydrate, manganous sulfate, ammonium molybdate and borax, they are 3: 0.2: 0.4 in the anhydrous form weight ratio: 0.3: 0.3, and by weight 26: 54: 10: 0.2: 6 mixed product that gets 12-8-5.
Through the ground field test that desertifies, the result shows, compares with the general calcium of equivalence, and the comparison of vegetables amount of increase in production is according to high by 160%.
Embodiment 5
This embodiment implementation step is identical with embodiment 1, but is to use 25 kilograms of acetic acid rare earth compounds, 250 kilograms of calcium sulfate and 250 kilograms of magnesium chlorides.In addition, the sulfuric acid add-on is 1 ton of P
2O
5The Rock Phosphate (72Min BPL) of content 28% (weight) is 580 kilogram of 98% sulfuric acid, and its residence time in changing into the chamber is 1 hour, and the curing time is 10 days, the product that makes like this, and through chemical analysis, this product is phosphorous (with P
2O
5Meter) be that 14.0% (weight), rare earth element (in oxide compound) are 0.38% (weight).
Adopt product, vitriolate of tartar, micronutrient fertiliser and the polyacrylic acid of urea, above-mentioned preparation then, wherein said micronutrient fertiliser is zinc oxide, cupric sulfate pentahydrate, manganous sulfate, ammonium molybdate and boric acid, they are 3: 0.3: 0.2 in the anhydrous form weight ratio: 0.2: 0.5, and by weight 26: 56: 11: 0.4: 6 mixed product that gets 12-8-5.
Show that through the ground field test results that desertifies compare with the phosphorus ammonium of equivalence, the comparison of wheat increase yield amplitude is according to high by 111%.
Claims (13)
1, a kind of production method of fertilizer for deseritified field, this method comprises Rock Phosphate (72Min BPL) fragmentation, ball milling, mix, change into and maturation stage with sulfuric acid, it is characterized in that in ball milling and/or mixing and/or change into adding rare earth compound, calcium cpd and/or magnesium compound in the step
Described rare earth compound is mishmetal mineral compound or organic compound, single rare earth mineral compound or organic compound,
The add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.16-2.5%, 1.5-40% and 1.5-40% in ore weight,
Product after the slaking and nitrogenous fertilizer, potash fertilizer, micronutrient fertiliser mix by weight 45-60: 22-40: 8-14: 0.05-0.5: 1-10 with the water-absorbent material and just obtain described fertilizer.
2, method according to claim 1 is characterized in that described rare earth compound is rare earth chloride, nitrate, vitriol, carbonate, acetate, mixed rare-earth oxide or single rare earth oxide compound.
3, method according to claim 1 is characterized in that described rare earth compound is rare earth nitrate, vitriol, carbonate, mixed rare-earth oxide or single rare earth oxide compound.
4, method according to claim 1 is characterized in that described rare earth compound is Lanthanum trichloride, lanthanum nitrate, lanthanum sulfat, Phosbloc, Cerium II Chloride, cerous nitrate, cerous sulfate, cerous carbonate, lanthanum acetate or cerous acetate, lanthanum trioxide or cerium oxide.
5, method according to claim 1 is characterized in that described calcium cpd is calcium oxide, nitrocalcite, calcium sulfate, calcium chloride, lime carbonate or Wingdale, calcium hydroxide or calcium acetate.
6, method according to claim 1 is characterized in that described magnesium compound is magnesium oxide, magnesium chloride, magnesium nitrate, magnesiumcarbonate, sal epsom, magnesium hydroxide or magnesium acetate.
7, method according to claim 1 is characterized in that, the add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.16-1.6%, 1.5-32% and 1.5-32% in Rock Phosphate (72Min BPL) weight.
8, method according to claim 1 is characterized in that the add-on of described rare earth compound, calcium cpd and magnesium compound is respectively 0.2-1.4%, 1.5-24% and 1.5-24% in Rock Phosphate (72Min BPL) weight.
9, method according to claim 1 is characterized in that described nitrogenous fertilizer is ammonium chloride, ammonium nitrate, bicarbonate of ammonia, ammonium sulfate or urea.
10, method according to claim 1 is characterized in that described potash fertilizer is Repone K, saltpetre, vitriolate of tartar or potassium primary phosphate.
11, method according to claim 1 is characterized in that described micronutrient fertiliser is zinc sulfate, zinc oxide or zinc carbonate; Copper sulfate or chalcopyrite; Manganous sulfate, manganese oxide, Manganous chloride tetrahydrate or Manganse Dioxide; Ammonium molybdate, Sodium orthomolybdate or molybdic oxide; Borax, boric acid or Sodium Tetraborate.
12, method according to claim 1 is characterized in that described water-absorbent material is that crosslink propylene hydrochlorate, starch graft acrylic acid, starch-grafted propylene are fine, carboxymethyl cellulose, polyvinyl alcohol acrylic acid graft copolymer, molecular sieve or zeolite and one or more mixtures in them thereof.
13, the fertilizer of producing according to the described method of one of claim 1-12 is characterized in that this fertilizer contains in this by weight of fertilizer nitrogen 10-14%, phosphorus (P
2O
5Meter) 8-10%, potassium are (with K
2The O meter) 4-7%, rare earth element (in oxide compound) 0.05%-0.60% and micronutrient element 0.05-0.4%.
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| CN 99117441 CN1125799C (en) | 1999-12-10 | 1999-12-10 | Fertilizer for deseritified field and its production process |
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| CN 99117441 CN1125799C (en) | 1999-12-10 | 1999-12-10 | Fertilizer for deseritified field and its production process |
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| CN101638581B (en) * | 2009-08-20 | 2011-11-30 | 珠海国佳高分子新材料有限公司 | Middle element calcium magnesium and sulfur water-retaining agent and preparation method thereof |
| CN102992896B (en) * | 2012-11-27 | 2014-05-28 | 深圳市芭田生态工程股份有限公司 | Powdery multi-element fertilizer anti-hardening additive and application thereof |
| CN104081961A (en) * | 2014-06-16 | 2014-10-08 | 郎溪县双明生态农业有限公司 | Transplanting method for southern magnolias |
| US10633299B2 (en) * | 2018-04-23 | 2020-04-28 | Compass Minerals Usa Inc. | Time-release molybdenum fertilizer |
| CN108558556A (en) * | 2018-07-04 | 2018-09-21 | 郑州大学 | A method of preparing particle urea groups composite fertilizer with urea-sulfuric acid decomposing rock phosphate with hydrogen |
-
1999
- 1999-12-10 CN CN 99117441 patent/CN1125799C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462912B (en) * | 2009-01-16 | 2012-05-30 | 中国地质大学（武汉） | Mineral fertilizer water retention agent and preparation thereof |
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| Publication number | Publication date |
|---|---|
| CN1257855A (en) | 2000-06-28 |
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