CN102838428A - Granular-structure-based soil conditioner and preparation method thereof - Google Patents
Granular-structure-based soil conditioner and preparation method thereof Download PDFInfo
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- CN102838428A CN102838428A CN2012103336388A CN201210333638A CN102838428A CN 102838428 A CN102838428 A CN 102838428A CN 2012103336388 A CN2012103336388 A CN 2012103336388A CN 201210333638 A CN201210333638 A CN 201210333638A CN 102838428 A CN102838428 A CN 102838428A
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Abstract
The invention discloses a granular-structure-based soil conditioner and a preparation method of the granular-structure-based soil conditioner. The preparation method of the granular-structure-based soil conditioner comprises the following steps: 1, drying: drying a modified additive to an air-dried state; 2, grinding: grinding raw materials of the soil conditioner into 180-250 meshes and grinding the air-dried modified additive into 350-400 meshes by using a ball grinding mill; 3, granulating: fully mixing 80-90wt% of the ground raw materials of the soil conditioner and 5-10wt% of the ground modified additive in a mixer, then adding 5-10wt% of water, uniformly stirring, and preparing into granules by using a roll type granulator or an edge runner mill; and 4, sieving and packaging: sieving the granules by using a double-layer sieve and packaging materials at the middle layer of the double-layer sieve to finally obtain the finished products. The granular-structure-based soil conditioner prepared by the method has the beneficial effects that capillary channels are rich in the granules and soil solution can enter the granules and react with the granules, thereby achieving the purpose of improving the soil.
Description
Technical field
The present invention relates to a kind of preparation method of soil improvement agent, be specifically related to soil conditioner of a kind of crumb structure and preparation method thereof.
Background technology
Existing fertilizer formulations has water solvent, granule and pulvis, and water solvent is mainly used in foliage top dressing and fertigation, and granule and pulvis can be used for the soil conditioner preparation.The purpose that fertilizer is processed granule has two: one, and the contact area of minimizing and soil delays fertilizer dissolving and the speed that absorbs, and reaches minimizing nutrient loss raising fertilizer efficiency; Two are to use the fertilizer machinery operation, guarantee dose and uniformity coefficient accurately, and also having reduces labor intensity improves the effect of operating efficiency.As the soil conditioner formulation; Opposing to soil conditioner with the purpose that soil fully contacts the physico-chemical property of improving the soil; Though can guarantee macroscopic amount of application and uniformity coefficient but on microcosmic, still have very large difference; Particularly can form fine and close after granule surface and the soil reaction and amendment that inert coating (for example the acid of calcium and soil generates lime carbonate, calcium sulfate) that can not continue to react hinders soil and granule interior further reacts, so though have can mechanize accurate quantitative and macroscopical uniformity coefficient advantage and be not used.Present most soil conditioner is a pulvis; If can spread fertilizer over the fields evenly, can fully contact soil, obtain good reclamation result; But manual work is spread fertilizer over the fields the utmost point and cannot say for sure to demonstrate,prove amount of application and uniformity coefficient, often causes caking or local calcification unfavorable with the soil microorganisms growth to crop root because of the part is excessive; Pulvis can't mechanized, and manual work is spread fertilizer over the fields and is prone to fly upward drift, is difficult to guarantee consumption and uniformity coefficient, and labour intensity is big, efficient is low, and environment is poor.In order to overcome the shortcoming of pulvis; The producer that has takes to strengthen the amendment particle size after cracking or requires the peasant to mix and uses after a large amount of clay fertilizers are mixed thoroughly; The inner amendment of the former still unavoidable coarse grain can't play a role; The latter can accomplish when little field test reluctantly, and the workload of several times is very difficult to be accepted and implementation by the peasant because increased in actual agriculture prodn.
Soil particle can be divided into the grains of sand and clay according to basic globule size, and the grains of sand are main for sandy soil is commonly called as sandy soil, and clay is that the main clayey soil that is called is commonly called as clay, and the grains of sand and clay ratio are moderate is called loam.The extreme soil that desertifies does not have structure fully, is " loose sand " preserve moisture and fertility ability extreme difference, and extreme clayey soil lacks macrovoid, and the permeability extreme difference all is unfavorable for plant-growth.Loam is crumb structure, and granule inner have abundant fine porosity (kapillary) to be beneficial to preserve moisture and fertility, between granule abundant macrovoid arranged, and is beneficial to ventilatively, is best suited for the Soil structure of plant-growth.The soil conditioner of crumb structure
Summary of the invention
For overcoming the defective of prior art, the object of the present invention is to provide a kind of preparation method of soil conditioner of crumb structure, can obtain a kind of soil conditioner of crumb structure through this method.The soil conditioner of crumb structure can use machinery to broadcast and execute; Can not fly upward, improve and broadcast the uniformity coefficient of executing, an inside has abundant capillary channel; The soil solution can get into an inner and reaction with it; The basis granularity is little, and specific surface area can fully be reacted with the acid-basicity of soil greatly, reaches the purpose of improving the soil.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is following:
A kind of preparation method of soil conditioner of crumb structure, it may further comprise the steps
1) drying: property-modifying additive is dried to air dried condition;
2) grind: in ball mill, the soil conditioner raw material is ground to the 180-250 order, air-dry property-modifying additive is ground to the 350-400 order;
3) granulation: soil conditioner raw material 80-90%, the property-modifying additive 5-10% after with above-mentioned grinding adds water 5-10% behind the thorough mixing in mixer according to the mass percent meter, stirs, and processes granule with double roller compaction granulator or wheel roller afterwards;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
In order to make property-modifying additive be wrapped in the soil conditioner surface better.In the preferred scheme, a kind of soil conditioner preparation method of crumb structure may further comprise the steps
1) drying: property-modifying additive is dried to air dried condition;
2) grind: soil conditioner, property-modifying additive are mixed, be ground to the 250-300 order afterwards again;
3) granulation: the soil conditioner behind above-mentioned mixed grinding adds water, stirs, and processes granule with double roller compaction granulator or wheel roller afterwards;
Wherein, be that 80-90%, property-modifying additive are that 5-10%, water are 5-10% according to mass percent meter soil conditioner;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
In the preferred scheme, said soil conditioner is lime, silicates acidic soil conditioner, gypsum class saline alkali soil conditioner, or one or more mixing in the organic soil amendment of the additional soil organism.
Property-modifying additive according to the invention is that dispersed material is or/and the cohesiveness material; Property-modifying additive helps the formation of crumb structure, can prevent that soil conditioner from absorbing moisture and the effect that hydration sclerosis influence is improved the soil takes place.
Preferably, said dispersed material is one or more the dispersed materials that mix in peat, fertilizer, brown coal, the straw powder.
Preferably, said cohesiveness material is a kind of in clay, wilkinite, kaolin, the ground phosphate rock.The cohesiveness material is used for the very weak soil conditioner of cohesiveness, helps the formation of crumb structure.
In the step 1) of the present invention air-dry after, the moisture content in the property-modifying additive is less than or equal to 15%.
The aperture of the upper strata mesh screen of double deck screen and lower floor's mesh screen is respectively 20-25 order, 75-85 order in the step 4) of the present invention.
A kind of soil conditioner of crumb structure; Prepare through method of the present invention, it is made up of soil conditioner raw material, property-modifying additive and water, and wherein the point counting by mass percentage of each amounts of components is not soil conditioner raw material 80-90%; Property-modifying additive 5-10%, water 5-10%.
Compare prior art; Beneficial effect of the present invention is: the micelle grain preparation basis granularity that obtains through preparation method of the present invention is little, and specific surface area is big, is different from the sturdy construction of granule; The granule inside of the soil conditioner of crumb structure of the present invention has abundant capillary channel; Its existing soil contact similar with pulvis is long-pending, owing to the effect of property-modifying additive, can hydration not harden again; The soil solution can get into granule inner and with the effective constituent reaction of soil conditioner, make soil obtain effective constituent and improve; The soil conditioner of crumb structure of the present invention can adopt mechanical fertilization with consumption and uniformity coefficient, alleviates peasant's labour intensity and raises the efficiency.
Embodiment below in conjunction with concrete is done further explain to the present invention.
Embodiment
It below is the preferred embodiment of the invention.
Embodiment 1
A kind of preparation method of soil conditioner of crumb structure, it may further comprise the steps
1) drying: with peat natural air drying to moisture content is 15%;
2) grind: in ball mill, the soil conditioner raw material is ground to 200 orders, air-dry peat is ground to 380 orders;
3) granulation: in mixer, add water 5% behind the thorough mixing according to soil conditioner raw material 90%, the property-modifying additive 5% of mass percent meter after, stir, process granule with double roller compaction granulator or wheel roller afterwards with above-mentioned grinding;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
Wherein soil conditioner is formed through pulverizing, mixed calcining, cooling activation by molybdenum mine tailing, rhombspar, hard coal, and wherein the massfraction of each component is respectively molybdenum mine tailing 32%, rhombspar 57%, hard coal 11%; Contain quicklime 30% in the soil conditioner that obtains, Natural manganese dioxide 20%, active silica 20%, various micro-summations 1%, all the other are ferro-aluminum ore deposit oxide compound; The upper and lower aperture of used double deck screen is respectively 24 orders, 80 orders.
Embodiment 2
A kind of preparation method of soil conditioner of crumb structure, it may further comprise the steps
1) drying: with peat natural air drying to moisture content is 12%;
2) grind: in ball mill, the gypsum soil conditioner is ground to 180 orders, air-dry peat is ground to 350 orders;
3) granulation: in mixer, add water 10% behind the thorough mixing according to gypsum soil conditioner 80%, the peat 10% of mass percent meter after, stir, process granule with double roller compaction granulator or wheel roller afterwards with above-mentioned grinding;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
Wherein the upper and lower mesh size of double deck screen is respectively 20 orders, 75 orders.
Embodiment 3
A kind of preparation method of soil conditioner of crumb structure, it may further comprise the steps
1) drying: with ground phosphate rock dry to moisture content be 10%;
2) grind: in ball mill, soil conditioner 85%, ground phosphate rock 7% mixing are milled to 250 orders altogether;
3) granulation: the material behind the above-mentioned mixed grinding is added water 8%, stir, process granule with double roller compaction granulator or wheel roller afterwards;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
Wherein the aperture of the upper strata mesh screen of soil conditioner double deck screen and lower floor's mesh screen is respectively 25 orders, 80 orders.
Embodiment 4
A kind of preparation method of soil conditioner of crumb structure, it may further comprise the steps
1) drying: with brown coal natural air drying to moisture content is 15%;
2) grind: in ball mill, the soil conditioner raw material is ground to 200 orders, air-dry peat is ground to 380 orders;
3) granulation: in mixer, add water 5% behind the thorough mixing according to soil conditioner raw material 90%, the brown coal 5% of mass percent meter after, stir, process granule with double roller compaction granulator or wheel roller afterwards with above-mentioned grinding;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
Wherein soil conditioner is formed through pulverizing, mixed calcining, cooling activation by molybdenum mine tailing, rhombspar, hard coal, and wherein the massfraction of each component is respectively molybdenum mine tailing 32%, rhombspar 57%, hard coal 11%; Contain quicklime 30% in the soil conditioner that obtains, Natural manganese dioxide 20%, active silica 20%, various micro-summations 1%, all the other are ferro-aluminum ore deposit oxide compound; The upper and lower aperture of used double deck screen is respectively 24 orders, 80 orders.
Simultaneous test:
The molybdenum mine tailing acidic soil conditioner of crumb structure of the present invention is imbedded in the wet sand; Pulvis and granule not add the soil conditioner raw material that property-modifying additive handles are imbedded respectively in the wet sand as contrasting simultaneously; Keep moisture; The back observation of one week, pulvis is formed more greatly but very not hard concrete-like agglomerate; The indivedual aggegations of granule are agglomerating, and granule interior forms very hard concrete-like thing; The sclerosis caking does not appear in the soil conditioner of crumb structure of the present invention fully.
Above-mentioned embodiment is merely preferred implementation of the present invention; Can not limit the scope of the present invention's protection with this, the variation of any unsubstantiality that those skilled in the art is done on basis of the present invention and replacement all belong to the present invention's scope required for protection.
Claims (9)
1. the preparation method of the soil conditioner of a crumb structure is characterized in that it may further comprise the steps:
1) drying: property-modifying additive is dried to air dried condition;
2) grind: in ball mill, soil conditioner is ground to the 180-250 order, air-dry property-modifying additive is ground to the 350-400 order;
3) granulation: the soil conditioner after the above-mentioned grinding, property-modifying additive are added water behind the thorough mixing in mixer, stir, process granule with double roller compaction granulator or wheel roller afterwards; Wherein, be that 80-90%, property-modifying additive are that 5-10%, water are 5-10% according to mass percent meter soil conditioner;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
2. the preparation method of the soil conditioner of a crumb structure is characterized in that it may further comprise the steps
1) drying: property-modifying additive is dried to air dried condition;
2) grind: soil conditioner, property-modifying additive are mixed, be ground to the 250-300 order afterwards again;
3) granulation: the soil conditioner behind above-mentioned mixed grinding adds water, stirs, and processes granule with double roller compaction granulator or wheel roller afterwards;
Wherein, be that 80-90%, property-modifying additive are that 5-10%, water are 5-10% according to mass percent meter soil conditioner;
4) packing of sieving: above-mentioned sieve with double deck screen after, the material package with the double deck screen middle layer is finished product, on the double deck screen and double-deck undersized material turn back to granulation again in double roller compaction granulator or the wheel roller.
3. the preparation method of the soil conditioner of crumb structure according to claim 1 and 2; It is characterized in that: said soil conditioner is lime, silicates acidic soil conditioner, gypsum class saline alkali soil conditioner, or one or more mixing in the organic soil amendment of the additional soil organism.
4. the preparation method of the soil conditioner of crumb structure according to claim 1 and 2, it is characterized in that: said property-modifying additive is that dispersed material is or/and the cohesiveness material.
5. the preparation method of the soil conditioner of crumb structure according to claim 3, it is characterized in that: said dispersed material is one or more the dispersed materials that mix in peat, fertilizer, brown coal, the straw powder.
6. the preparation method of the soil conditioner of crumb structure according to claim 3 is characterized in that: said cohesiveness material is a kind of in clay, wilkinite, kaolin, the ground phosphate rock.
7. the preparation method of the soil conditioner of crumb structure according to claim 1 and 2 is characterized in that: in the step 1) air-dry after, the moisture content in the property-modifying additive is less than or equal to 15%.
8. the preparation method of the soil conditioner of crumb structure according to claim 1 and 2, it is characterized in that: the aperture of the upper strata mesh screen of double deck screen and lower floor's mesh screen is respectively 20-25 order, 75-85 order in the step 4).
9. soil conditioner with the crumb structure of claim 1 or the preparation of 2 described methods; It is characterized in that: it is made up of soil conditioner, property-modifying additive and water; Wherein the point counting by mass percentage of each amounts of components is not soil conditioner raw material 80-90%; Property-modifying additive 5-10%, water 5-10%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105906460A (en) * | 2016-04-19 | 2016-08-31 | 安徽金帝豪肥业有限公司 | Preparation method of farmland soil fertilizer reinforcement agent |
| CN105906464A (en) * | 2016-04-25 | 2016-08-31 | 浙江丰瑜生态科技有限公司 | Preparation method of peat soil plant ultrafine powder |
| CN110028365A (en) * | 2019-04-19 | 2019-07-19 | 烟台富慧农业科技有限公司 | A kind of middle microelement soil conditioner and preparation method thereof |
| CN111171823A (en) * | 2020-01-18 | 2020-05-19 | 迪斯科科技集团（宜昌）有限公司 | Soil conditioner production system and method |
| CN113087455A (en) * | 2021-04-07 | 2021-07-09 | 湘潭大学 | High liquid limit large pore structural soil and sample preparation method thereof |
| GB2577866B (en) * | 2018-09-27 | 2023-08-16 | Anglo American Woodsmith Ltd | Pellet re-processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111171823A (en) * | 2020-01-18 | 2020-05-19 | 迪斯科科技集团（宜昌）有限公司 | Soil conditioner production system and method |
| CN113087455A (en) * | 2021-04-07 | 2021-07-09 | 湘潭大学 | High liquid limit large pore structural soil and sample preparation method thereof |
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| CN102838428B (en) | 2014-08-06 |
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Owner name: GUANGDONG WANSHAN SOIL IMPROVEMENT TECHNOLOGY CO., Free format text: FORMER NAME: GUANGDONG WANSHAN AGRICULTURAL SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD. |
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