CN103755394A - Method for producing secondary element mineral fertilizer by activating wollastonite - Google Patents
Method for producing secondary element mineral fertilizer by activating wollastonite Download PDFInfo
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- CN103755394A CN103755394A CN201310712225.5A CN201310712225A CN103755394A CN 103755394 A CN103755394 A CN 103755394A CN 201310712225 A CN201310712225 A CN 201310712225A CN 103755394 A CN103755394 A CN 103755394A
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Abstract
The invention discloses a method for producing a secondary element mineral fertilizer by activating wollastonite. The method mainly comprises the following steps: mixing wollastonite, gypsum, white clay, dolomite, an additive A and an additive B in a certain ratio; performing the procedures of stirring, drying, molding, baking, cooling and ball milling to prepare a compound fertilizer mainly containing secondary elements such as calcium, silicon, magnesium, sulfur and chlorine. In the fertilizer, the available nutrients are more than 60 percent, wherein the available calcium oxide is more than 25 percent, the available silicon dioxide is more than 20 percent, the available magnesium oxide is more than 5 percent, the available sulfur trioxide is more than 5 percent, and the available chlorine content is more than 2 percent. Moreover, multiple types of trace elements are contained, so that the fertilizer is slightly alkaline. Most of the raw materials for producing the fertilizer consist of natural minerals, so that the fertilizer has the advantages of convenience in drawing materials, low cost and the like. The product is a natural mineral compound fertilizer for regulating the acidity or the physical and chemical properties of soil in saline and alkaline land and comprehensively raising the trace element level, and has a high application value and market popularization potential.
Description
technical field:
The present invention relates to new-type fertilizer field, belong to agricultural sciences.Be specifically related to a kind of method that moderate-element mineral fertilizer is produced in wollastonite activation.
Background technology
" bread is the staff of life, and food be take soil as this ".In recent decades, China's agricultural has also obtained promoting fast, but deep variation is occurring Agricultural resources and environment situation, especially edatope situation.Due to long-term irrational fertilization mode, particularly the using in a large number of chemical fertilizer nitrogenous fertilizer, Atmospheric Acid Deposition and industrial pollutants are invaded, cause that soil compaction, soil poison, soil-borne disease, soil acidification, the soil salinization etc. be further serious, and soil nutrient elements is out of proportion and acidifying is main inducing wherein, this is comprising comprehensive disappearance of the moderate-elements such as calcium, silicon, magnesium, sulphur, chlorine.According to national soil testing analysis, with the rich scarce index of the nutrient under the eighties in last century yield level, to weigh, national arable land moderate-element calcium accounts for 64% below nutritional deficiency threshold value, magnesium accounts for 53%, lack approximately 4,000 ten thousand tons/year of silicon, in addition, the elements such as sulphur, chlorine also have disappearance in various degree.Whole nation arable soil acidity-basicity ph value 30 annual decline Liao0.6Ge units, acidifying cultivated area (pH<5.5) from 30 years 7%, rise to current 18%; China farmland, garden soil acidifying aggravation, most areas, south, Jiaodong Peninsula and northeast region-by-region soil acidification are particularly serious, directly affect agriculture production, fertilization compositions based on earth measurement data statistic analysis shows: south China 14 provinces (district, city) soil pH is less than 6.5 ratio and expands 65% to by 52% before 30 years, be less than 5.5 by 20%, expand 40% to, be less than 4.5 by 1%, expand 4% to, (district) economized in the most serious Guangdong of acidifying, Guangxi, Sichuan etc., and pH is less than 4.5 arable soil ratio and is respectively 13%, 7% and 4%.Its direct result is the production declining of farm crop, and quality reduction, mouthfeel variation, poisonous and harmful agricultural-food event emerge in an endless stream.Under this overall background, soil conditioning and agricultural environment restoration of the ecosystem are significant problems be badly in need of solving, and they are also the key subjects that solve the contradiction that is becoming increasingly acute between China's population, resource and environment, should cause thinking and the concern of the whole society.
Well-known: soil is the product of rock decay, in Soil structure, 50% is comprised of soil pores, contain air and moisture content; And in another 50% soil solid, mineral substance has accounted for 45%, organic matter accounts for 5%.These mineral substance provide the needed nutritive element phosphorus of plant-growth, potassium, silicon, calcium, sulphur, chlorine, magnesium, iron and various trace elements.Their content, kind and occurrence form directly affect growth, the yield and quality of crop.For southern acid soil area, for a long time, these mineral nutrient elements can not get effectively supplementing, in addition acid precipitation is to factors such as the eluviation of these nutritive elements and Crops, in soil, these mineral elements lack very much, data according to Guangdong Academy of Agricultural Sciences: at present in Soils of Guangdong, potassium deficiency reaches more than 90%, it is 50% upper and lower that the deficiency extent of silicon, calcium, magnesium, sulphur etc. maintains, and lack various trace elements.Therefore, develop the mineral compound fertilizer material that calcium, silicon, magnesium, sulphur, chlorine weakly alkaline, that the soil of take lacks are main component, under current overall background, just seem and be even more important with urgent.This compound manure can neutralize or suppress the acidity of soil, supplements the needed moderate-element component of soil, on the other hand, it is also the type revolution of tracing to the source, from the destroyed source of soil, look for the Balance of various elements, recover original proterties and the physico-chemical property of soil.It improves farmland quality and forever continues and efficiently utilize land resources will play great pushing effect for " taking good care of " soil.This project is by wollastonite activation, produce a kind of take moderate-element be main, with the mineral substance fertilizer of weakly alkaline feature.
Summary of the invention
To prepare, a kind of to take moderate-element calcium, silicon, magnesium, sulphur, chlorine be that main mineral substance fertilizer is as object in the present invention, a kind of method that provides wollastonite activation to produce moderate-element mineral fertilizer, and prepared product has, and production cost is low, material is originated the advantage wide, market potential is large.
The present invention by adding gypsum, white clay, rhombspar in wollastonite, and under the effect that helps additive, make calcium, silicon components activation in wollastonite, and together with the calcium in gypsum, white clay and rhombspar, sulphur, magnesium, chlorine, be combined into take that calcium, silicon, magnesium, sulphur, chlorine are main component, with the secondary nutrients of weakly alkaline feature.
A method of utilizing wollastonite activation to produce moderate-element mineral substance fertilizer, according to mass percent meter wollastonite 20%～80%, gypsum 5%～60%, white clay 6%～60%, rhombspar 5%～65%, helps additive A and B 1%～5% composition mixture material.Wherein, helping additive A is more than one in potassium felspar sand, white mica, illite or salt of wormwood; Helping additive B is more than one in saltcake, salt or Sodium Fluoride.Helping the weight consumption ratio between additive A and B is 1:0.5～1:2.Mixture is milled to particle diameter and is less than 0.10mm; Then dry to the water ratio of mixture and be less than 6%; Again the mixture forming process after drying being become to particle diameter is the spherolite of 1～2cm, and enters in activation kiln and carry out calcination activation, and temperature is controlled at 800～1100 ℃, roasting time 0.5～4 hour; Cooling, pulverizing that spherolite after calcination activation carries out, can be made into mineral compound fertilizer material, and moderate-element mineral fertilizer, is finally packaged into bag.
Compared with prior art, the present invention has following advantage:
(1) raw materials for production form by natural mineral, have draw materials conveniently, feature with low cost, than existing compound production cost, reduce more than 50%.
(2) in the compound manure of producing, moderate-element component is complete, can reach the effect of balance fertilizing.
(3) utilize the special additive that helps, can make activation temperature from traditional 1200 ℃, the reaction times more than 5 hours, shortens to 800～1100 ℃, roasting time 0.5～4 hour, and the energy consumption in production process reduces greatly.
Accompanying drawing explanation
Fig. 1 is moderate-element mineral substance fertilizer preparation technology schematic flow sheet.
Embodiment
embodiment 1
Certain fertilizer company is a kind of scale state owned enterprise of producing NpK complex fertilizer.Adopt this explained hereafter secondary nutrients, as filling, join in NpK complex fertilizer, can make original compound manure composition more comprehensive, it is balanced that nutrition is more tending towards, and production cost has declined nearly 55%.Its technical process as shown in Figure 1.The mineral raw material adopting (according to mass percent meter) compatibility is: wollastonite 50%, and gypsum 12%, white clay 25%, rhombspar 12%, helping additive A and B is 1%, wherein helping additive A is potassium felspar sand+white mica (mass ratio 1:1); Helping additive B is saltcake+salt (mass ratio 1:1), and helping the weight consumption ratio between additive A and B is also 1:1.Its technical process is: above-mentioned mineral raw material is fully mixed, and be milled to particle diameter and be less than 0.074mm; Then mixture is dried to water ratio and be less than 5%; Mixture forming process after drying is become to the spherolite of the about 2cm of particle diameter, and enter in activation kiln and carry out roasting, temperature is controlled at 900 ℃, roasting time 1 hour.Cooling, pulverizing that spherolite after activation carries out, can be made into mineral compound fertilizer material.Wherein by the check of third party's composition, learn: the available nutrient in the fertilizer of production is greater than 72%, and wherein the efficient oxidation calcium is greater than 27%, effectively silicon-dioxide is greater than 22%, the efficient oxidation magnesium is greater than 6%, effectively sulphur trioxide is greater than 6%, and available chlorine content is greater than 2.5%, and contains various trace elements.The pH=10.2 of product, production cost can be controlled in below 550 yuan/ton.It is a kind of mineral compound fertilizer material that contains multiple moderate-element.
embodiment 2
Shanxi fertilizer company adopts material (according to the mass percent meter) compatibility of this explained hereafter secondary nutrients to be: wollastonite 37%, gypsum 25%, white clay 26%, rhombspar 10%, helping additive A and B is 2%, and wherein helping additive A is illite+salt of wormwood (mass ratio 1:1); Helping additive B is salt+Sodium Fluoride (mass ratio 1:1), and helping the weight consumption ratio between additive A and B is 1:2.Its technical process is: above-mentioned mineral raw material is fully mixed, and carry out ball milling, be milled to particle diameter and be less than 0.090mm; Then mixture is dried to water ratio and be less than 6%; Mixture forming process after drying is become to the spherolite of the about 1.5cm of particle diameter, and enter in activation kiln and carry out roasting, temperature is controlled at 950 ℃, roasting time 1.5 hours.Cooling, pulverizing that spherolite after activation carries out, can be made into mineral compound fertilizer material.Wherein by the check of third party's composition, learn: the available nutrient in the fertilizer of production is greater than 65%, and wherein the efficient oxidation calcium is greater than 31%, effectively silicon-dioxide is greater than 21%, the efficient oxidation magnesium is greater than 5.5%, effectively sulphur trioxide is greater than 5.4%, and available chlorine content is greater than 3.0%, and contains various trace elements.The pH=11.3 of product, production cost can be controlled in below 520 yuan/ton.Be a kind of mineral compound fertilizer material that contains multiple moderate-element, can be used for supplementing the nutritive ingredients such as acidity or the needed calcium of alkaline land soil, silicon, magnesium, sulphur, chlorine.
embodiment 3
Guangdong fertilizer company is a kind of large-scale private enterprise that produces soil conditioner.Adopt this explained hereafter moderate-element, production cost has declined nearly 51%, the mineral raw material adopting (according to mass percent meter) compatibility is: wollastonite 60%, gypsum 10%, white clay 20%, rhombspar 9%, helping additive A and B is 1%, wherein helping additive A is illite+white mica (mass ratio 1:1); Helping additive B is saltcake+Sodium Fluoride (mass ratio 1:1), and helping the weight consumption ratio between additive A and B is also 1:0.75.Its technical process is: above-mentioned mineral raw material is fully mixed, and be milled to particle diameter and be less than 0.074mm; Then mixture is dried to water ratio and be less than 5%; Mixture forming process after drying is become to the spherolite of the about 2cm of particle diameter, and enter in activation kiln and carry out roasting, temperature is controlled at 1050 ℃, roasting time 40 minutes.Cooling, pulverizing that spherolite after activation carries out, can be made into mineral compound fertilizer material.Wherein by the check of third party's composition, learn: the available nutrient in the fertilizer of production is greater than 63%, and wherein the efficient oxidation calcium is greater than 27%, effectively silicon-dioxide is greater than 22%, the efficient oxidation magnesium is greater than 6%, effectively sulphur trioxide is greater than 6%, and available chlorine content is greater than 2%, and contains various trace elements.The pH=11.2 of product, production cost can be controlled in 530 yuan/ton.Be a kind of mineral compound fertilizer material that contains multiple moderate-element, can nurse one's health the soil of southern area acidifying, supplement the moderate-element nutrition composition that soil lacks.
Claims (8)
1. a method for moderate-element mineral fertilizer is produced in wollastonite activation, it is characterized by, and raw materials for production are in mass percent (%), by following material composition mixture material:
Wollastonite 20～80
Gypsum 5～60
White clay 6～60
Rhombspar 5～65
Help additive A and B 1～5;
By said mixture material process ball milling, dry again, forming process, calcination activation, cooling, pulverize, make mineral compound fertilizer material, moderate-element mineral fertilizer, is finally packaged into bag.
2. the method for wanting a kind of wollastonite activation described in 1 to produce moderate-element mineral fertilizer by right, is characterized by, and the described additive A that helps is more than one in potassium felspar sand, white mica, illite or salt of wormwood.
3. the method for wanting a kind of wollastonite activation described in 1 to produce moderate-element mineral fertilizer by right, is characterized by, and the described additive B that helps is more than one in saltcake, salt or Sodium Fluoride.
4. the method for wanting a kind of wollastonite activation described in 1 to produce moderate-element mineral fertilizer by right, is characterized by, and helping the mass ratio between additive A and B is 1:0.5～1:2.
5. the method for wanting a kind of wollastonite activation described in 1 to produce moderate-element mineral fertilizer by right, is characterized by, and described ball milling is less than 0.10mm for mixture is milled to particle diameter.
6. the method for wanting a kind of wollastonite activation described in 1 to produce moderate-element mineral fertilizer by right, is characterized by, and described oven dry is that mixture is dried to water ratio and is less than 6%.
7. the method for wanting a kind of wollastonite activation described in 1 to produce moderate-element mineral fertilizer by right, is characterized by, and described forming process is that the mixture forming process after drying is become to particle diameter is the spherolite of 1～2cm.
8. the method for wanting a kind of wollastonite activation described in 1 to produce moderate-element mineral fertilizer by right, is characterized by, and the temperature of described calcination activation is controlled at 800～1100 ℃, and the time is 0.5～4 hour.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130065A (en) * | 2014-07-30 | 2014-11-05 | 金美善 | Plate growth promoter and preparation method thereof |
| CN108586142A (en) * | 2018-06-06 | 2018-09-28 | 大连环球矿产股份有限公司 | It is a kind of to prepare potassium silicon magnesium calcium mineral soil conditioner and preparation method thereof using potassium albite |
| CN110002909A (en) * | 2019-03-13 | 2019-07-12 | 陕西地建土地工程技术研究院有限责任公司 | A kind of method and feldspathic sandstone powder by microelement middle in feldspathic sandstone activation |
| CN113337295A (en) * | 2021-06-24 | 2021-09-03 | 华南理工大学 | Method for producing soil conditioner by utilizing bulk industrial solid wastes and product |
| CN113511938A (en) * | 2021-07-06 | 2021-10-19 | 华南理工大学 | Preparation method of spraying type mineral nutrient solution and product |
| CN113620724A (en) * | 2021-08-31 | 2021-11-09 | 葫芦岛连石农业有限公司 | Method for producing silicon-calcium-potassium-magnesium fertilizer by utilizing dolomitic limestone |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1071909A (en) * | 1991-10-25 | 1993-05-12 | 中国非金属矿工业总公司梨树硅灰石矿业公司 | Silicon fertilizer consisting mainly of wollastonite |
| CN101376611A (en) * | 2008-09-28 | 2009-03-04 | 华南理工大学 | Method for producing compound fertilizer by calcining combination of soda waste mud and potassium ore |
| CN101880179A (en) * | 2010-05-28 | 2010-11-10 | 华南理工大学 | Method for preparing potash fertilizer and building material products from white alkali-making mud |
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2013
- 2013-12-20 CN CN201310712225.5A patent/CN103755394A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071909A (en) * | 1991-10-25 | 1993-05-12 | 中国非金属矿工业总公司梨树硅灰石矿业公司 | Silicon fertilizer consisting mainly of wollastonite |
| CN101376611A (en) * | 2008-09-28 | 2009-03-04 | 华南理工大学 | Method for producing compound fertilizer by calcining combination of soda waste mud and potassium ore |
| CN101880179A (en) * | 2010-05-28 | 2010-11-10 | 华南理工大学 | Method for preparing potash fertilizer and building material products from white alkali-making mud |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130065A (en) * | 2014-07-30 | 2014-11-05 | 金美善 | Plate growth promoter and preparation method thereof |
| CN108586142A (en) * | 2018-06-06 | 2018-09-28 | 大连环球矿产股份有限公司 | It is a kind of to prepare potassium silicon magnesium calcium mineral soil conditioner and preparation method thereof using potassium albite |
| CN110002909A (en) * | 2019-03-13 | 2019-07-12 | 陕西地建土地工程技术研究院有限责任公司 | A kind of method and feldspathic sandstone powder by microelement middle in feldspathic sandstone activation |
| CN113337295A (en) * | 2021-06-24 | 2021-09-03 | 华南理工大学 | Method for producing soil conditioner by utilizing bulk industrial solid wastes and product |
| CN113337295B (en) * | 2021-06-24 | 2022-08-30 | 华南理工大学 | Method for producing soil conditioner by utilizing bulk industrial solid wastes and product |
| CN113511938A (en) * | 2021-07-06 | 2021-10-19 | 华南理工大学 | Preparation method of spraying type mineral nutrient solution and product |
| CN113620724A (en) * | 2021-08-31 | 2021-11-09 | 葫芦岛连石农业有限公司 | Method for producing silicon-calcium-potassium-magnesium fertilizer by utilizing dolomitic limestone |
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Application publication date: 20140430 |