CN1363538A - Si-Ca-S fertilizer prepared from ardealite and powdered coal ash and its preparing process - Google Patents
Si-Ca-S fertilizer prepared from ardealite and powdered coal ash and its preparing process Download PDFInfo
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- CN1363538A CN1363538A CN 01139524 CN01139524A CN1363538A CN 1363538 A CN1363538 A CN 1363538A CN 01139524 CN01139524 CN 01139524 CN 01139524 A CN01139524 A CN 01139524A CN 1363538 A CN1363538 A CN 1363538A
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Abstract
A Si-Ca-S fertilizer also used as soil improver is prepared from the ardealite as the by-product of phosphoric acid plant and powdered coal ash. Its advantages include high contents of Si, Ca, S, Fe, Mg, Cu Zn and B, low cost and high effect on improving soil and increasing yield of crops.
Description
The present invention relates to two kinds of solid waste phosphogypsums and flyash and produce the preparation method of silico n calcium sulfur fertilizer and this fertilizer.
Phosphogypsum is the byproduct when producing phosphoric acid, and 1 ton of phosphoric acid of every production will discharge 4.5～4.9 tons of phosphogypsums.Surplus about 50,000 tons of China's phosphoric acid by wet process output, phosphogypsum generation 20 ten thousand tons.Utilization about phosphogypsum mainly comprises co-producing sulfuric acid and cement, potassium sulfate making (ammonium), system Calucium Silicate powder and sodium sulfate etc., but because problems such as production technique, product cost and investment, major part is not utilized as yet at present, be stacked in inside and outside the factory, take a large amount of soils and cause environmental pollution, become the problem that puzzlement phosphoric acid factory ordinary production presses for solution.Flyash is the solid waste that coal-fired thermal power factory discharges.China's year discharging flyash is more than 100,000,000 ton at present, how rationally to handle this kind refuse, has become the important topic of power plant.Comprehensive Utilization Ways about flyash has reached kind more than 40, and its Application Areas comprises building materials, chemical industry, metallurgy, agricultural etc.Wherein the building material industry of consumption maximum fails to develop rapidly because the cost height is invested greatly and waited reason slowly with taking effect.Flyash is agricultural then to be the important channel of its development and use, and all pay much attention to countries in the world, and states such as the U.S., Australia, Britain and Russia have obtained many successful experiences aspect the crop yield utilizing flyash to improve the soil to foster and apply fertilizer, improve.But fertilizer efficiency is low, consumption is big, trucking costs is high because flyash exists in agricultural, and easily alkalization and may cause problem such as harmful element accumulation has become the major obstacle that its large-scale popularization is used.
At the problems referred to above, the present invention is carrying out on the basis of multianalysis the chemistry of phosphogypsum and two kinds of solid waste of flyash and physical properties etc., discovery mixes phosphogypsum with flyash, on the one hand the high pH value of flyash and strong adsorptivity can effectively be removed the strongly-acid and the reduction soluble fluoride content of phosphogypsum, thereby have overcome the toxic action of peracidity and fluorine when the phosphogypsum as fertilizer sources is used; Be strongly-acid and contain beneficial elements such as a large amount of calcium, magnesium, silicon, sulphur owing to phosphogypsum on the other hand, the solubility of trace element in silicon in the flyash, calcium, magnesium, zinc, molybdenum, boron, the copper etc. is increased, simultaneously replenished the content of elements such as silicon, calcium, magnesium, sulphur again, hanged down and problems such as consumption is big thereby solved the flyash fertilizer efficiency.
The object of the present invention is to provide a kind of trade waste phosphogypsum and flyash of utilizing to produce silico n calcium sulfur fertilizer and production technique thereof, this fertilizer can be applied to various types of soil and various crop, having significantly improves the soil foster and apply fertilizer effect and increasing yield and improving quality effect.
The composition that utilizes phosphogypsum and flyash to produce silico n calcium sulfur fertilizer provided by the invention is (consumption is a weight part): phosphogypsum: 30.0～60.0, flyash: 30.0～60.0, potassium felspar sand breeze (80～100 order): 2.0～6.0, serpentine breeze (80～100 order): 2.0～6.0, dolomite breeze: 4.0～10.0, zinc sulfate: 0.5～2.0, borax (boric acid): 0.1～1.0, ammonium molybdate (sodium): 0.1～0.5; The preferential weight proportion scope of selecting is (consumption is a weight part): phosphogypsum 35.0～50.0, flyash: 40.0～50.0, potassium felspar sand breeze (80～100 order): 2.0～4.0, serpentine breeze (80～100 order): 2.0～4.0, dolomite breeze: 5.0～8.0, zinc sulfate: 0.5～1.5, borax (boric acid): 0.2～0.5, ammonium molybdate (sodium): 0.1～0.3;
In the present invention, the technology of utilizing phosphogypsum and flyash to produce silico n calcium sulfur fertilizer is: a. with the phosphogypsum of humidity through airing or mechanical drying to moisture≤8%, and then be ground to below 20 orders; B. after weighing by formula ratio, phosphogypsum, flyash and other batch mixes are stirred well to evenly; C. the packing of weighing of the powder after will mixing promptly obtains powdery product.
The product that obtains also can be processed into spherical or cylindrical pellet through tablets press, needs to add an amount of tackiness agent this moment.
Embodiment:
By following formula ratio weigh (consumption is a weight part):
Phosphogypsum 40.0
Flyash 45.0
Potassium felspar sand breeze 3.0
Serpentine ore powder 3.0
Dolomite breeze 7.5
Zinc sulfate 1.0
Borax (boric acid) 0.3
Ammonium molybdate (sodium) 0.2
Phosphogypsum is the weight after the oven dry, and water content≤8% through being ground to below 20 orders, fully stirs phosphogypsum, flyash and other batch mixes by above-mentioned dosage then, and the packing of at last powder of mixture being weighed is dispatched from the factory.
An important feature of the present invention is through foolproof technological process, with flyash and phosphogypsum thorough mixing, through solid state reaction, both can remove the strongly-acid of phosphogypsum, can obtain trace element fertilizer in the abundant silico-calcium sulphur of content again.Since utilize waste make main raw material and producing process simple, therefore, the low cost product of production helps promoting and a large amount of the use.Thereby for the comprehensive utilization of phosphogypsum and flyash provides an effective way.After measured, utilize the effective constituent of little fertilizer in the silico-calcium sulphur of phosphogypsum and flyash production to be:
SiO
2≥25％ CaO≥10％ S≥8％
Total contents such as Fe+Mg+Cu+B+Mn+Mo+Sr+Ni 〉=5%
Fertilizer of the present invention shows to have following advantage through the field application test:
1. can be applied to all kinds soil, can effectively prevent soil acidityization and improve soil The earth structure reduces unit weight, increases porosity, to improving ground temperature, particularly to improving colloid soil The physical behavior of earth has good effect. Simultaneously, also have in soil moisture retention, the enhancing soil Microbial activity and the conversion of promotion npk nutrient, equilibrium water, fertilizer, gas, heat effect. Improve the soil The effect of fostering and apply fertilizer is obvious.
2. trace element belongs among Si, Ca, S and Fe, the Mg etc. that contain in the product of the present invention In solubility in citric acid and solubility, can direct utilization absorbed by crops, to paddy rice, corn, soybean, The various crop yield effects such as wheat, peanut, cotton, potato class, fruit tree and vegetables are fairly obvious, Improve output generally more than 15%. Simultaneously to short strain disease, infertility, withered disease, macula lutea Disease, little leaf, variegated leaf disease etc. have certain prevention effect.
3. product fertilizer efficiency of the present invention is long, strengthens soil fertility. This product belongs to controlled availability fertilizer, effectively Composition is non-volatile, be difficult for to run off, can slow long-acting supply Crop, and sustainable 2 years of fertilizer efficiency More than, use year after year and can significantly improve soil fertility.
4. cheap, be easy to be accepted and a large amount of the use by the peasant. Because that uses is mainly former Material all belongs to discarded object, and production technology is simple in addition, and production cost is low, and therefore, this product can Replace farm manure to use in a large number as base fertilizer.
Claims (3)
1, a kind of phosphogypsum and flyash production silico n calcium sulfur fertilizer of utilizing is characterized in that: the component proportions of this fertilizer is (consumption is a weight part): phosphogypsum: 30.0～60.0, flyash: 30.0～60.0, potassium felspar sand breeze (80～100 order): 2.0～6.0, serpentine breeze (80～100 order): 2.0～6.0, dolomite breeze: 4.0～10.0, zinc sulfate 0.5～2.0, borax (boric acid): 0.1～1.0, ammonium molybdate (sodium) 0.1～0.5.
2, the method for utilizing phosphogypsum and flyash to produce silico n calcium sulfur fertilizer according to claim 1, it is characterized in that: a. is dried to moisture≤8% with the phosphogypsum of humidity, is ground to then below 20 orders; B. after weighing by formula ratio, phosphogypsum, flyash and other batch mixes are stirred well to evenly; C. the packing of weighing of the powder after will mixing promptly obtains powdery product.
3, require described phosphogypsum and the flyash of utilizing to produce silico n calcium sulfur fertilizer according to right 1, it is characterized in that: its best composition ratio is (consumption is a weight part): phosphogypsum: 35.0～50.0, flyash: 40.0～50.0, potassium felspar sand breeze (80～100 order): 2.0～4.0, serpentine breeze (80～100 order): 2.0～4.0, the dolomite breeze: 5.0～8.0, zinc sulfate: 0.5～1.5, borax (boric acid): 0.2～0.5, ammonium molybdate (sodium): 0.1～0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011395249A CN1172879C (en) | 2001-11-21 | 2001-11-21 | Si-Ca-S fertilizer prepared from ardealite and powdered coal ash and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011395249A CN1172879C (en) | 2001-11-21 | 2001-11-21 | Si-Ca-S fertilizer prepared from ardealite and powdered coal ash and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1363538A true CN1363538A (en) | 2002-08-14 |
| CN1172879C CN1172879C (en) | 2004-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011395249A Expired - Fee Related CN1172879C (en) | 2001-11-21 | 2001-11-21 | Si-Ca-S fertilizer prepared from ardealite and powdered coal ash and its preparing process |
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| CN (1) | CN1172879C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300065C (en) * | 2003-09-11 | 2007-02-14 | 汪敬恒 | Granular chlorine less potassium calcium silicon magnesium fertilizer and its manufacturing method |
| CN1301235C (en) * | 2004-10-27 | 2007-02-21 | 王刚 | Silicon potassium fertilizer |
| CN100475745C (en) * | 2005-11-25 | 2009-04-08 | 李德昌 | Novel long-acting compound phosphate fertilizer |
| CN101337685B (en) * | 2008-08-11 | 2010-06-02 | 昆明理工大学 | Process for producing calcium carbonate by absorbing carbon dioxide with ardealite decompose slag |
| CN101838168A (en) * | 2010-03-25 | 2010-09-22 | 辽宁方兴绿色产业集团有机肥有限公司 | Multielement active nutritional agent |
| CN102372527A (en) * | 2010-08-11 | 2012-03-14 | 辽宁省农业科学院环境资源与农村能源研究所 | Si-Ca-Zn-S-Mg fertilizer |
| CN103430678A (en) * | 2013-09-02 | 2013-12-11 | 江苏丘陵地区镇江农业科学研究所 | Application method of sulfur fertilizer for improving gluten content of strong gluten wheat |
| CN105154100A (en) * | 2015-09-02 | 2015-12-16 | 山东农大肥业科技有限公司 | Acid soil improver as well as continuous team-pressure device and method thereof |
| CN105712800A (en) * | 2014-12-01 | 2016-06-29 | 深圳市芭田生态工程股份有限公司 | Agricultural phosphogypsum mixture and preparation method thereof |
| CN113578916A (en) * | 2021-06-23 | 2021-11-02 | 常熟理工学院 | Method for realizing resource utilization of phosphogypsum by utilizing waste incineration fly ash |
| CN115814750A (en) * | 2022-12-15 | 2023-03-21 | 贵州大学 | Method for preparing porous calcium silicate adsorbent from phosphogypsum |
-
2001
- 2001-11-21 CN CNB011395249A patent/CN1172879C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300065C (en) * | 2003-09-11 | 2007-02-14 | 汪敬恒 | Granular chlorine less potassium calcium silicon magnesium fertilizer and its manufacturing method |
| CN1301235C (en) * | 2004-10-27 | 2007-02-21 | 王刚 | Silicon potassium fertilizer |
| CN100475745C (en) * | 2005-11-25 | 2009-04-08 | 李德昌 | Novel long-acting compound phosphate fertilizer |
| CN101337685B (en) * | 2008-08-11 | 2010-06-02 | 昆明理工大学 | Process for producing calcium carbonate by absorbing carbon dioxide with ardealite decompose slag |
| CN101838168B (en) * | 2010-03-25 | 2012-09-12 | 辽宁方兴绿色产业集团有机肥有限公司 | Multielement active nutritional agent |
| CN101838168A (en) * | 2010-03-25 | 2010-09-22 | 辽宁方兴绿色产业集团有机肥有限公司 | Multielement active nutritional agent |
| CN102372527A (en) * | 2010-08-11 | 2012-03-14 | 辽宁省农业科学院环境资源与农村能源研究所 | Si-Ca-Zn-S-Mg fertilizer |
| CN103430678A (en) * | 2013-09-02 | 2013-12-11 | 江苏丘陵地区镇江农业科学研究所 | Application method of sulfur fertilizer for improving gluten content of strong gluten wheat |
| CN105712800A (en) * | 2014-12-01 | 2016-06-29 | 深圳市芭田生态工程股份有限公司 | Agricultural phosphogypsum mixture and preparation method thereof |
| CN105154100A (en) * | 2015-09-02 | 2015-12-16 | 山东农大肥业科技有限公司 | Acid soil improver as well as continuous team-pressure device and method thereof |
| CN105154100B (en) * | 2015-09-02 | 2017-05-24 | 山东农大肥业科技有限公司 | Acid soil improver as well as continuous team-pressure device and method thereof |
| CN113578916A (en) * | 2021-06-23 | 2021-11-02 | 常熟理工学院 | Method for realizing resource utilization of phosphogypsum by utilizing waste incineration fly ash |
| CN115814750A (en) * | 2022-12-15 | 2023-03-21 | 贵州大学 | Method for preparing porous calcium silicate adsorbent from phosphogypsum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1172879C (en) | 2004-10-27 |
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