CN102838428B - 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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- CN102838428B CN102838428B CN201210333638.8A CN201210333638A CN102838428B CN 102838428 B CN102838428 B CN 102838428B CN 201210333638 A CN201210333638 A CN 201210333638A CN 102838428 B CN102838428 B CN 102838428B
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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 preparation method who the present invention relates to a kind of soil improvement agent, is 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 for soil conditioner preparations.The object of fertilizer granulation agent has two: one, and the contact area of minimizing and soil delays fertilizer and dissolves and the speed absorbing, and reaches minimizing nutrient loss raising fertilizer efficiency; The 2nd, use fertilizer machinery operation, ensure rate of fertilizer application and uniformity coefficient accurately, also having reduces labor intensity improves the effect of operating efficiency.As soil conditioner formulation, the object that soil conditioner and soil is fully contacted to improvement soil physico-chemical property is opposing, though can ensure macroscopical amount of application and uniformity coefficient but still have very large difference on microcosmic, particularly granule surface with after soil reaction, can form inert coating fine and close and that can not continue react (for example calcium and the sour generation of soil calcium carbonate, calcium sulfate) obstruction soil and further reacts with the amendment of granule interior, so though have can mechanize accurate quantitative analysis and the advantage of macroscopical uniformity coefficient and not being used.Current most soil conditioner is pulvis, if can spread fertilizer over the fields evenly, can fully contact soil, obtain good reclamation result, be difficult to ensure card amount of application and uniformity coefficient but manually spread fertilizer over the fields the utmost point, often cause caking or local calcification unfavorable to crop root and soil microorganisms growth because part is excessive; Pulvis cannot mechanized, manually spreads fertilizer over the fields and easily flies upward drift, be difficult to ensure consumption and uniformity coefficient, and labour intensity is large, efficiency is low, and environment is poor.In order to overcome the shortcoming of pulvis, some producers take to strengthen amendment particle size after cracking or require peasant to mix after a large amount of clay fertilizers are mixed thoroughly and use, the former still the inner amendment of unavoidable coarse grain cannot play a role, the latter can accomplish reluctantly in the time of little field test, and because increased, the workload of several times is very difficult to be accepted by peasant and carry out in actual agriculture production.
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 clayey soil that is called of leading is commonly called as clay, and what the grains of sand and clay ratio were moderate is called loam.The extreme soil desertifying does not have structure completely, is " loose sand " preserve moisture and fertility ability extreme difference, and extreme clayey soil lacks macrovoid, and permeability extreme difference, is all 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, has abundant macrovoid, 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 defect 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 by the 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, granule inside has abundant capillary channel, the soil solution can enter an inner and reaction with it, basis granularity is little, and specific surface area can fully be reacted with the acid-basicity of soil greatly, reaches the object of improvement soil.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A preparation method for the soil conditioner of crumb structure, it comprises the following steps
1) dry: property-modifying additive is dried to air dried condition;
2) grind: in ball mill, soil conditioner raw material is ground to 180-250 order, air-dry property-modifying additive is ground to 350-400 order;
3) granulation: the 5-10% that adds water after soil conditioner raw material 80-90%, property-modifying additive 5-10% after above-mentioned grinding fully being mixed in mixer according to mass percent meter, stir, make granule with double roller compaction granulator or wheel roller afterwards;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen, by the material package in double deck screen middle layer, be finished product, the material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or wheel roller.
In order to make property-modifying additive be wrapped in better soil conditioner surface.In preferred scheme, a kind of soil conditioner preparation method of crumb structure comprises the following steps
1) dry: property-modifying additive is dried to air dried condition;
2) grind: soil conditioner, property-modifying additive are mixed, be ground to again afterwards 250-300 order;
3) granulation: the soil conditioner after above-mentioned mixed grinding adds water, stirs, and makes granule afterwards with double roller compaction granulator or wheel roller;
Wherein, be that 80-90%, property-modifying additive are that 5-10%, water are 5-10% according to mass percent meter soil conditioner;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen, by the material package in double deck screen middle layer, be finished product, the material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or wheel roller.
In preferred scheme, described 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 supplementary soil organism.
Property-modifying additive of the present invention is that dispersed material is or/and cohesiveness material; Property-modifying additive is conducive to the formation of crumb structure, can prevent that soil conditioner from absorbing moisture and the effect of hydration hardening effect improvement soil occurs.
Preferably, described dispersed material is one or more the dispersed materials that mix in peat, fertilizer, brown coal, straw powder.
Preferably, described cohesiveness material is the one in clay, wilkinite, kaolin, ground phosphate rock.Cohesiveness material, for the very weak soil conditioner of cohesiveness, is conducive to the formation of crumb structure.
After air-dry in step 1) of the present invention, the moisture content in property-modifying additive is less than or equal to 15%.
In step 4) of the present invention, the upper strata mesh screen of double deck screen and the aperture of lower floor's mesh screen are respectively 20-25 order, 75-85 order.
A kind of soil conditioner of crumb structure, prepare by 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%.
Compared to existing technology, beneficial effect of the present invention is: the micelle grain preparation basis granularity obtaining by preparation method of the present invention is little, specific surface area is large, be 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 to pulvis is long-pending, due to the effect of property-modifying additive, can hydration not harden again; The soil solution can enter an inside and react with the effective constituent of soil conditioner, makes 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.
Below in conjunction with concrete embodiment, the present invention is described in further detail.
Embodiment
It is below the preferred embodiment of the invention.
Embodiment 1
A preparation method for the soil conditioner of crumb structure, it comprises the following steps
1) dry: to be 15% by peat natural air drying to moisture content;
2) grind: in ball mill, soil conditioner raw material is ground to 200 orders, air-dry peat is ground to 380 orders;
3) granulation: add water 5% after the soil conditioner raw material 90% after above-mentioned grinding, property-modifying additive 5% fully being mixed in mixer according to mass percent meter, stir, make granule with double roller compaction granulator or wheel roller afterwards;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen, by the material package in double deck screen middle layer, be finished product, the material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or 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%; In the soil conditioner obtaining, contain calcium oxide 30%, magnesium oxide 20%, active silica 20%, various micro-summations 1%, all the other are ferro-aluminum ore deposit oxide compound; The upper and lower aperture of double deck screen used is respectively 24 orders, 80 orders.
Embodiment 2
A preparation method for the soil conditioner of crumb structure, it comprises the following steps
1) dry: to be 12% by peat natural air drying to moisture content;
2) grind: in ball mill, gypsum soil conditioner is ground to 180 orders, air-dry peat is ground to 350 orders;
3) granulation: add water 10% after the gypsum soil conditioner 80% after above-mentioned grinding, peat 10% fully being mixed in mixer according to mass percent meter, stir, make granule with double roller compaction granulator or wheel roller afterwards;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen, by the material package in double deck screen middle layer, be finished product, the material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or wheel roller.
Wherein the upper and lower mesh size of double deck screen is respectively 20 orders, 75 orders.
Embodiment 3
A preparation method for the soil conditioner of crumb structure, it comprises the following steps
1) dry: by ground phosphate rock dry to moisture content be 10%;
2) grind: in ball mill, soil conditioner 85%, ground phosphate rock 7% are mixed and is milled to altogether 250 orders;
3) granulation: the material after above-mentioned mixed grinding is added water to 8%, stir, make granule with double roller compaction granulator or wheel roller afterwards;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen, by the material package in double deck screen middle layer, be finished product, the material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or wheel roller.
Wherein the upper strata mesh screen of soil conditioner double deck screen and the aperture of lower floor's mesh screen are respectively 25 orders, 80 orders.
Embodiment 4
A preparation method for the soil conditioner of crumb structure, it comprises the following steps
1) dry: to be 15% by brown coal natural air drying to moisture content;
2) grind: in ball mill, soil conditioner raw material is ground to 200 orders, air-dry peat is ground to 380 orders;
3) granulation: add water 5% after the soil conditioner raw material 90% after above-mentioned grinding, brown coal 5% fully being mixed in mixer according to mass percent meter, stir, make granule with double roller compaction granulator or wheel roller afterwards;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen, by the material package in double deck screen middle layer, be finished product, the material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or 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%; In the soil conditioner obtaining, contain calcium oxide 30%, magnesium oxide 20%, active silica 20%, various micro-summations 1%, all the other are ferro-aluminum ore deposit oxide compound; The upper and lower aperture of double deck screen used 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 wet sand, imbed respectively in wet sand in contrast not add the pulvis of soil conditioner raw material of property-modifying additive processing and granule simultaneously, keep moisture, after one week, observe, 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; There is not sclerosis caking completely in the soil conditioner of crumb structure of the present invention.
Above-mentioned embodiment is only the preferred embodiment of the present invention; can not limit the scope of protection of the invention with this, the variation of any unsubstantiality that those skilled in the art does on basis of the present invention and replacement all belong to the present invention's scope required for protection.
Claims (2)
1. a preparation method for the soil conditioner of crumb structure, is characterized in that it comprises the following steps:
1) dry: property-modifying additive is dried to air dried condition;
2) grind: soil conditioner is ground to 180-250 order in ball mill, air-dry property-modifying additive is ground to 350-400 order;
3) granulation: add water after the soil conditioner after above-mentioned grinding, property-modifying additive are fully mixed in mixer, stir, make 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; Described soil conditioner is one or more mixing in lime, silicates acidic soil conditioner, gypsum class saline alkali soil conditioner; Described property-modifying additive is dispersed material or/and cohesiveness material, and the moisture content in property-modifying additive is less than or equal to 15%; Wherein dispersed material is one or more the dispersed materials that mix in peat, fertilizer, brown coal, and cohesiveness material is the one in clay, wilkinite, kaolin, ground phosphate rock;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen; by the material package in double deck screen middle layer; be finished product; material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or wheel roller, and the upper strata mesh screen of described double deck screen and the aperture of lower floor's mesh screen are respectively 20-25 order, 75-85 order.
2. a preparation method for the soil conditioner of crumb structure, is characterized in that it comprises the following steps
1) dry: property-modifying additive is dried to air dried condition;
2) grind: soil conditioner, property-modifying additive are mixed, be ground to again afterwards 250-300 order;
3) granulation: the soil conditioner after above-mentioned mixed grinding adds water, stirs, and makes granule afterwards with double roller compaction granulator or wheel roller; Be that 80-90%, property-modifying additive are that 5-10%, water are 5-10% according to mass percent meter soil conditioner; Described soil conditioner is one or more mixing in lime, silicates acidic soil conditioner, gypsum class saline alkali soil conditioner; Described property-modifying additive is dispersed material or/and cohesiveness material, and the moisture content in property-modifying additive is less than or equal to 15%; Wherein dispersed material is one or more the dispersed materials that mix in peat, fertilizer, brown coal, and cohesiveness material is the one in clay, wilkinite, kaolin, ground phosphate rock;
4) packaging of sieving: after above-mentioned granule sieves with double deck screen; by the material package in double deck screen middle layer; be finished product; material on double deck screen and under double deck screen turns back to granulation again in double roller compaction granulator or wheel roller, and the upper strata mesh screen of described double deck screen and the aperture of lower floor's mesh screen are respectively 20-25 order, 75-85 order.
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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 |
| GB2577866B (en) * | 2018-09-27 | 2023-08-16 | Anglo American Woodsmith Ltd | Pellet re-processing |
| 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 |
| CN113087455B (en) * | 2021-04-07 | 2022-02-11 | 湘潭大学 | High liquid limit large pore structural soil and sample preparation method thereof |
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| WO2005009924A1 (en) * | 2003-07-24 | 2005-02-03 | Samuel Gerardo Silva Arias | Method for producing organic fertilisers, and resulting material |
| CN1640987A (en) * | 2004-01-09 | 2005-07-20 | 王培武 | Soil improver, and its preparing method and use method |
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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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Address after: 514400 Guangdong city of Meizhou province Wuhua County Qi Ling Zhen jakiro Village Patentee after: GUANGDONG WANSHAN SOIL REMEDIATION TECHNOLOGY CO., LTD. Address before: 510060 Guangdong city of Meizhou province Wuhua County Qi Ling Zhen jakiro Village Patentee before: Guangdong Wanshan Agricultural Science and Technology Development Co., Ltd. |
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Address after: 514400 Qi Ling Zhen Shuang tou Long Ling Cun Liao Li Tang, Wuhua County, Meizhou City, Guangdong Province Patentee after: Guangdong Wanshan Environmental Technology Co.,Ltd. Address before: 514400 Shuangtou Longshui village, Qiling Town, Wuhua County, Meizhou City, Guangdong Province Patentee before: GUANGDONG WANSHAN SOIL REMEDIATION TECHNOLOGY Co.,Ltd. |
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