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CN1063674A - Granular compound fertilizer and technology thereof that the part acidic phosphorus mine single stage method is made - Google Patents

Granular compound fertilizer and technology thereof that the part acidic phosphorus mine single stage method is made Download PDF

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Publication number
CN1063674A
CN1063674A CN 91112622 CN91112622A CN1063674A CN 1063674 A CN1063674 A CN 1063674A CN 91112622 CN91112622 CN 91112622 CN 91112622 A CN91112622 A CN 91112622A CN 1063674 A CN1063674 A CN 1063674A
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China
Prior art keywords
fertilizer
single stage
stage method
repone
compound
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Granted
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CN 91112622
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Chinese (zh)
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CN1032914C (en
Inventor
孙以中
张文辉
许秀成
李菂萍
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ZHENGZHOU POLYTECHNICAL COLLEGE
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ZHENGZHOU POLYTECHNICAL COLLEGE
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Priority to CN 91112622 priority Critical patent/CN1032914C/en
Publication of CN1063674A publication Critical patent/CN1063674A/en
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Publication of CN1032914C publication Critical patent/CN1032914C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The granular compound fertilizer of part acidic phosphorus mine single stage method manufacturing be a kind of be raw material with nitrogenous fertilizer (urea, ammonium nitrate etc.), potash fertilizer (Repone K or vitriolate of tartar), ground phosphate rock and sulfuric acid (or phosphoric acid or mixture of sulfuric phosphoric acid), the compound manure that makes of step in the reaction tablets press.
Part acidic phosphorus mine single stage method system composite fertilizer is directly to be the phosphorus source with ground phosphate rock, combine together with the manufacturing of phosphate fertilizer and with the compound of nitrogenous fertilizer, potash fertilizer, save the production process of phosphate fertilizer, had less investment, characteristics such as raw material is cheap and easy to get, technology is simple, cost is low, fertilizer efficiency height.

Description

Granular compound fertilizer and technology thereof that the part acidic phosphorus mine single stage method is made
The invention belongs to the chemical industry class, is a kind of manufacture method of new particulate compound manure.
Part acidic phosphorus mine (claiming partially acidulated rock phosphate again) is to handle phosphorus ore with producing calcium superphosphate with the part of acid amount, makes in the phosphorus ore a part of phosphorus be converted into water-soluble a, part and is converted into solubility in citric acid, some unconverted phosphorus slowly conversion in soil still.By regulating sour consumption (acescency), can change the ratio of above-mentioned three kinds of form phosphorus.
Partially acidulated rock phosphate is particularly used wider on the torrid zone, subtropical zone acid soil abroad.The research and extension of partially acidulated rock phosphate just is being devoted at international fertilizer center (IFDC).And plan to promote this fertilizer on South East Asia and other places.The cross-country positive legendary ruler of great antiquity, the first of the Three August Ones of Japan has delivered " the up-to-date problem of fertilizer research " literary composition on " fertilizer " magazine in 1991, discussed seven directions of current fertilizer research, and wherein partially acidulated rock phosphate ranks second.
After calcium superphosphate is manured into soil, form acid stronger solution, when it spreads towards periphery, can dissolve iron in the soil, aluminium etc. and form insoluble phosphate, make degenerate useful phosphorus; And the acidic solution that partially acidulated rock phosphate forms in soil with unreacted breeze effect, is translated into available phosphorus when spreading towards periphery.The fertilizer efficiency and the calcium superphosphate of partially acidulated rock phosphate are suitable in the high soil of phosphate fixation ability, even are better than calcium superphosphate.A large amount of both at home and abroad experimental studies show, in acid, slightly acidic and calcareous soil, the fertilizer efficiency of partially acidulated rock phosphate such as is at the 80-110% of weight calcium superphosphate.
The deficiency of partially acidulated rock phosphate is that nutrient is low, nutrient is single, and fertilising inconvenience.In view of the above, we have developed the novel process of part acidic phosphorus mine single stage method preparing granular compound manure.Carried out international online retrieval at the Ministry of Chemical Industry's Office for Scientific and Technical Information in October, 1991, the relevant report of Shang Weijian.English Patent (UK1106104) has only been introduced a kind of technology of acidic phosphorus mine compound fertilizer making.This method is handled phosphorus ore with excess acid, P in acid and the phosphorus ore 2O 5Mol ratio 〉=4.7: 1, temperature of reaction 〉=70 ℃ are in order to avoid phosphorus ore is by CaSO 4Parcel, reacted slip makes product with ammonia neutralization, granulation, slaking.Unnecessary acid and ammonia react are converted into phosphorus ammonium or sulphur ammonium.It is not the joint acid type, the compound manure that neither single stage method makes.
The purpose of part acidic phosphorus mine single stage method compound fertilizer making is to make a kind of inexpensive polyelement composite fertilizer.Compare with common mixed fertilizers, its technology is simple, directly is the phosphorus source with ground phosphate rock; A step is made compound manure, balling ratio height in the reaction tablets press; Product utilization reaction heat self drying, cost is low.And the ordinary compound fertilizer height of nutrients such as the fertilizer efficiency of this fertilizer ratio.
The technology of part acidic phosphorus mine single stage method compound fertilizer making is as follows:
Raw material: nitrogenous source-urea (or ammonium nitrate, ammonium chloride etc.) is granular; Potassium source-Repone K or vitriolate of tartar ,-80 orders; Phosphorus source-ground phosphate rock, phosphorus pentoxide content 20-40% ,-90 orders; Souring agent-sulfuric acid (phosphoric acid or mixture of sulfuric phosphoric acid), concentration 20-98%.
Add urea (or ammonium nitrate, ammonium chloride in the tablets press in reaction; down together); evenly spray into small amount of acid; rotated about one minute; make urea surface fully moistening, add uniform ground phosphate rock of mixed with little amount and Repone K (or vitriolate of tartar), make it be coated on granular nitrogenous fertilizer surface; alternately spray mixture sour, that be sprinkled into breeze and Repone K (or vitriolate of tartar) again, until the multiple fertile granularity that reaches regulation.In the successive reaction tablets press, also can realize continuous production.Also can add various trace elements, make the compound manure that contains little fertilizer.Repone K in the raw material (or vitriolate of tartar, or other villaumite, or tensio-active agent) is the potassium source, is again the reactive behavior agent, can prevent that ground phosphate rock from being reacted the crystal of calcium sulfate parcel of generation and hinder reaction and carry out.Emit a large amount of heat during the ground phosphate rock acidifying, make temperature of reaction greater than 70 ℃.Product in tablets press and process of cooling, evaporation section moisture, thus realize self drying of product.Product is stored up slaking and can be packed after several days and dispatch from the factory in the warehouse.
Change the add-on of proportion scale and sulfuric acid or phosphoric acid, can be made into the special-purpose fertilizer of various crops.
Embodiment one: it is heavy to take by weighing KCl82 part, 500 parts of breezes (containing Vanadium Pentoxide in FLAKES 27%), 305 parts in urea, 105 parts in 93% sulfuric acid.Earlier urea is added in the reaction tablets press, evenly spray into a small amount of sulfuric acid, rotated about 1 minute, add mixed breeze and Repone K.Alternately spray is sour again, adds the ground phosphate rock and the Repone K of mixing, all adds until ground phosphate rock, Repone K and sulfuric acid.Take out product.Seasoning, and in the warehouse, store up slaking and adorn after several days and contract out factory, the fertilizer specially for wheat of 14-7-4.2 promptly got.
Embodiment two: get 218 parts of weights of urea, 196 parts in Repone K, 480 parts in ground phosphate rock, 100 parts of mixture of sulfuric phosphoric acid (wherein sulfuric acid is pure 40 parts, pure 50 parts of phosphoric acid).Earlier urea is added in the reaction tablets press, evenly spray into a small amount of mixture of sulfuric phosphoric acid, rotated about 1 minute, add mixed breeze and Repone K.Alternately spray acid again, add breeze and Repone K behind the mixing, after treating that breeze and Repone K add about 1/5, breeze, Repone K and the mixture of sulfuric phosphoric acid (spraying into) that can add mixing continuously, until all add (after, can add urea, ground phosphate rock, Repone K and mixture of sulfuric phosphoric acid continuously by proportioning, realize continuous production).Take out product, seasoning, and in the warehouse, store up slaking after several days, packing is dispatched from the factory, and can make the 10-10-10 fruit-specific fertilizer.
Also available common garden dish tablets press surrogate response tablets press is made this compound manure.
The present invention directly is the phosphorus source with ground phosphate rock, combines together with the production of phosphate fertilizer and with the compound of nitrogenous fertilizer, potash fertilizer.Raw material does not need pre-treatment, product utilization reaction heat self drying; The balling ratio height, no returning charge.Thereby energy consumption and cost are low, than the common compound fertilizer 10-20 unit/ton that reduces cost.The effective Vanadium Pentoxide in FLAKES of per kilogram is saved 0.3-0.5 kilogram sulfuric acid.The fertilizer efficiency of equivalent available phosphorus is more than 110% of calcium superphosphate or double superhosphate.And aftereffect is good.

Claims (4)

1, a kind of compound manure made from the part acidic phosphorus mine single stage method, it is characterized in that directly with ground phosphate rock as the phosphorus source of compound manure, be souring agent, be nitrogenous source, be the potassium source with Repone K (or vitriolate of tartar) with urea (or ammonium nitrate or ammonium chloride) with sulfuric acid (or phosphoric acid or mixture of sulfuric phosphoric acid), and add needed trace element, one goes on foot the polyelement composite fertilizer that makes.
2, by the compound manure of claim 1, it is characterized in that said ground phosphate rock, its P 2O 5Content is 20-40%.
3, by the compound manure of claim 1, it is characterized in that said Repone K (or vitriolate of tartar), be not only the potassium source, but also be a kind of reactive activity agent.
4,, it is characterized in that said product is to utilize the heat that produces in the reaction process to realize self drying by the compound manure of claim 1.
CN 91112622 1991-12-30 1991-12-30 Granular compound fertilizer and tech. made by part acidic phosphorus mine one step method Expired - Fee Related CN1032914C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 91112622 CN1032914C (en) 1991-12-30 1991-12-30 Granular compound fertilizer and tech. made by part acidic phosphorus mine one step method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 91112622 CN1032914C (en) 1991-12-30 1991-12-30 Granular compound fertilizer and tech. made by part acidic phosphorus mine one step method

Publications (2)

Publication Number Publication Date
CN1063674A true CN1063674A (en) 1992-08-19
CN1032914C CN1032914C (en) 1996-10-02

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CN 91112622 Expired - Fee Related CN1032914C (en) 1991-12-30 1991-12-30 Granular compound fertilizer and tech. made by part acidic phosphorus mine one step method

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042172A1 (en) * 1999-12-09 2001-06-14 Rotem Amfert Negev Ltd. Process for the preparation of urea superphosphate fertilizers
CN1094918C (en) * 1998-07-02 2002-11-27 化学工业部上海化工研究院 Method for prodn. of high efficiency composite fertilizer contg. nitrogen, phosphorous and potassium
KR100382832B1 (en) * 2000-09-14 2003-05-09 (주)에코바이오 Rock powder-based fertilizer composition and preparation thereof
CN102557802A (en) * 2012-02-20 2012-07-11 中国农业大学 Special fertilizer for rice and preparation method for fertilizer
CN102731214A (en) * 2012-07-12 2012-10-17 个旧市绿保复合肥有限责任公司 Production process of sugarcane slow release fertilizer
CN101508607B (en) * 2009-03-20 2012-11-21 辽宁华锦化工(集团)有限责任公司 Process for producing long-acting sustained-release complex fertilizer of urea sulfuric acid
CN106748017A (en) * 2016-12-02 2017-05-31 锦西天然气化工有限责任公司 A kind of production method of urea general calcium composite fertilizer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1094918C (en) * 1998-07-02 2002-11-27 化学工业部上海化工研究院 Method for prodn. of high efficiency composite fertilizer contg. nitrogen, phosphorous and potassium
WO2001042172A1 (en) * 1999-12-09 2001-06-14 Rotem Amfert Negev Ltd. Process for the preparation of urea superphosphate fertilizers
KR100382832B1 (en) * 2000-09-14 2003-05-09 (주)에코바이오 Rock powder-based fertilizer composition and preparation thereof
CN101508607B (en) * 2009-03-20 2012-11-21 辽宁华锦化工(集团)有限责任公司 Process for producing long-acting sustained-release complex fertilizer of urea sulfuric acid
CN102557802A (en) * 2012-02-20 2012-07-11 中国农业大学 Special fertilizer for rice and preparation method for fertilizer
CN102731214A (en) * 2012-07-12 2012-10-17 个旧市绿保复合肥有限责任公司 Production process of sugarcane slow release fertilizer
CN102731214B (en) * 2012-07-12 2014-05-07 个旧市绿保复合肥有限责任公司 Production process of sugarcane slow release fertilizer
CN106748017A (en) * 2016-12-02 2017-05-31 锦西天然气化工有限责任公司 A kind of production method of urea general calcium composite fertilizer

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C06 Publication
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C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
OR01 Other related matters
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee