CN1067235A

CN1067235A - lawn fertilizer and production technique thereof

Info

Publication number: CN1067235A
Application number: CN 91103375
Authority: CN
Inventors: 唐宝田; 程远尤
Original assignee: JINNAN CHEMICAL FERTILIZER EXPERIMENT PLANT TIANJIN
Current assignee: JINNAN CHEMICAL FERTILIZER EXPERIMENT PLANT TIANJIN
Priority date: 1991-05-28
Filing date: 1991-05-28
Publication date: 1992-12-23

Abstract

The present invention relates to a kind of dedicated fertilizer on lawn, athletic ground and preparation method thereof.It adopts (NH ₄) SO ₄: 10～25% weight, CO (NH ₂) ₂: 1～20% weight, general calcium 40～50% weight and promoting agent are made composition by two step method, and general calcium wherein adopts ground phosphate rock and sulfuric acid to carry out hybrid reaction and makes.Manufacturing process is simple, and the effective constituent of product, granularity, compressive resistance etc. all meet lawn gardening requirement; Spring can promote lawn growth, and the autumn can promote the accumulation of dry-matter, prolongs the greening phase; Remarkable in economical benefits can be country and saves a large amount of foreign exchanges.

Description

Lawn fertilizer and production technique thereof

The present invention relates to a kind of dedicated fertilizer on lawn, athletic ground and preparation method thereof.

Development along with China's sports, the athletic ground, lawn constantly enlarges, the grass place that sports events such as football, golf ball, sepa takraw, track and field adopt is from selecting kind, more special requirement all being arranged the aspects such as cultivation, fertilizer, maintenance management, especially very high with requiring aspect fertile, this mainly comprises: the effective ingredient of fertilizer, main aspect such as granularity, compressive resistance.Therefore, the lawn at present domestic important athletic ground or directly by foreign trader's contracting management, or rely on from external a large amount of import fertilizer, only certain city need 150,000 yuan of foreign exchanges the spending of tame international golf club annual import lawn fertilizer; According to incompletely statistics, at present domestic existing 6,000 ten thousand square metres motion lawn, the expense of required import fertilizer is about more than 5,820,000 dollars.In addition, also there is technical problem, the one, various countries all bottle up the lawn fertilizer technology, the 2nd, the lawn fertilizer of institute's import is that conditions such as the soil, weather, environment according to this state are drafted, the content of nitrogen is low than other composition in the fertilizer, and the content of phosphorus, potassium is approaching or three's content is approaching, as: nitrogen: phosphorus: potassium=0.5: 1: 1 or nitrogen: phosphorus: potassium=1: 1: 1, actual these import fertilizer also not exclusively are applicable to China's soil regime.

The object of the present invention is to provide a kind of suitable China soil regime, to mend nitrogen, the grassplot fertilizer of phosphorization and the method for preparation thereof.

Can take following technical scheme to realize the purpose of invention.Adopt (NH ₄) SO ₄: 10～25% weight, CO(NH ₂) ₂: 1～20% weight, general calcium: 40～50% weight, coarse whiting: 0～15% weight, K ₂SO ₄: 5～20% weight, promoting agent: 1.5～2.5% weight are formed composition.Producing method for compositions is: produce general calcium earlier, adopt ground phosphate rock and sulfuric acid to carry out hybrid reaction, the soup compound that obtains is gone into to change into the chamber and is carried out slaking reaction, go out to change into behind the chamber with the carbon ammonium carry out that ammonification is handled, its pulverizing is standby after the also further slaking; Then, with (NH ₄) SO ₄, CO(NH ₂) ₂, general calcium, coarse whiting, K ₂SO ₄, promoting agent mixes by consumption, finish through granulation, drying, screening, cooling, metering, packaging process.

Content to the technical program is described in further detail in conjunction with the embodiments.

The prescription of this lawn fertilizer and materials require as follows: (unit: ton)

Title

（NH ₄）SO ₄Contain N:20%

CO（NH ₂） ₂Contain N:46%

General calcium contains P2O5:14%

Coarse whiting contains P ₂O ₅： 47％

K ₂SO ₄Contain K ₂O： 50％

Promoting agent

Consumption

0.10～ 0.25

0.01～ 0.20

0.40～ 0.55

0.00～ 0.15

0.05～ 0.20

0.015～ 0.025

Remove general calcium [molecular formula Ca(H in the above-mentioned raw materials ₂PO ₄) ₂] outside the self-control, other is market and buys.Promoting agent can adopt compositions such as borax, zinc sulfate, manganous sulfate, ammonium molybdate and organic matter, with an amount of trace element supplement and organic matter.

Example 1:

Ammonium sulfate 25% weight effective ingredient:

Urea 10% weight percent nitrogen: phosphorus: potassium=1.07: 1: 0.28

General calcium 55% weight

Coarse whiting 3% weight

Vitriolate of tartar 5% weight

Promoting agent 2% weight

Example 2:

Ammonium sulfate 15% weight effective ingredient:

Urea 20% weight percent nitrogen: phosphorus: potassium=0.96: 1: 0.32

General calcium 40% weight

Coarse whiting 15% weight

Vitriolate of tartar 8% weight

Promoting agent 2% weight

Example 3:

Ammonium sulfate 10% weight effective ingredient:

Urea 20% weight percent nitrogen: phosphorus: potassium=0.97: 1: 0.75

General calcium 40% weight

Coarse whiting 10% weight

Vitriolate of tartar 17.5 weight

Promoting agent 2.5% weight

These three kinds of special fertilizer for lawn all can adapt to the soil regime of China preferably, and satisfy the nutritional requirement of grass.

The production technique of lawn fertilizer through repetition test, comparison, is selected two step process methods, can guarantee the quality of lawn fertilizer.The technological process of production of lawn fertilizer as shown in drawings.

The first step technology is to produce general calcium work in-process, adopt chemical process with ground phosphate rock and sulfuric acid by weight the consumption of 6:4 carry out hybrid reaction, its reaction formula is:

An amount of sulphur ammonium that adds makes free acid by ammonification.

Material after hybrid reaction is pulpous state, drive and change in the equipment of chamber (changing into railway carriage), carry out slaking reaction after 1～1.5 hour, drive out and change into the chamber, carrying out ammonification with the carbon ammonium then handles, and stack the further slaking in slaking storehouse 10～15 days, after with the chain type pulverizer it being pulverized, enter next procedure.Relevant processing condition are as follows:

Phosphorus ore phosphorus content (%)

Sulfuric acid concentration (%)

The sulfuric acid temperature (℃)

Phosphorus ore: sulfuric acid

The mixedization time (branch)

Curing time (time)

Bright fertile transformation efficiency (%)

Bright rich water part (%)

＞＝30

65～75

55～70

6：4

2～3

1～1.5

＞＝85

＜＝14

Second step process is with (NH ₄) SO ₄, CO(NH ₂) ₂, general calcium, coarse whiting, K ₂SO ₄, after promoting agent mixes by consumption, obtain finished product through operations such as granulation, drying, screening, cooling, metering, packings.Concrete processing condition are as follows:

Dry inlet temperature (℃)

Dry temperature out (℃)

Time of drying (branch)

Screening particle diameter (mm)

The cooling inlet temperature (℃)

The coolant outlet temperature (℃)

Cooling time (branch)

100～110

50～60

5～10

3～4

45～50

20～25

5～8

The agent of an amount of adding splicing clay adds entry, ammonium sulfate liquor in right amount during granulation when mixing.Major equipment in the production is: the single shaft mixer, and reducing rotary drum granulator and the constriction plate of establishing 0.3M in the exit prevent the particulate dust effusion, guarantee granularity; Dry drum and cooling drum.

Adopt this lawn fertilizer and technique to have following advantage:

1, manufacturing process simple, mostly be common apparatus, realize easily, in the production returning charge few, be beneficial to and boost productivity and can guarantee product quality, be that the effective ingredient, granularity, compressive resistance etc. of product all meet lawn gardening requirement.

2, the inner experiment in international golf club lawn application effect is good through the somewhere, meets the needs of lawn plant, and the spring can promote lawn growth, and the autumn can promote the accumulation of lawn dry-matter, has prolonged the greening phase.

3, the fertile import substitution fertilizer made from the technical program in lawn reduces the foreign exchange expenditure, remarkable in economical benefits, and the price of homemade lawn fertilizer only is 1/6 of an import fertilizer, can be country and saves a large amount of foreign exchanges.

Claims

1, a kind of lawn fertilizer, it is characterized in that: it is by (NH4) SO4:10～25% weight, CO (NH2) 2:1～20% weight, general calcium: 40～50% weight, coarse whiting: 0～15% weight, K2SO4:5～20% weight, promoting agent: the composition that 1.5～2.5% weight are formed.

2, a kind of processing method that is used to prepare the described lawn of claim 1 fertilizer, it is characterized in that: the first step is produced general calcium work in-process, it be with ground phosphate rock and sulfuric acid by weight 6: 4 consumption carry out hybrid reaction, the pasty material that obtains is gone into to change into the chamber and is carried out 1～1.5 hour slaking reaction, go out to change into and carry out ammonification with the carbon ammonium behind the chamber and handle, and further slaking after 10～15 days with its pulverizing; Second step was after the raw material that provides by claim 1 and proportion relation mix raw material, finish through granulation, drying, screening, cooling, metering, packaging process, 100～110 ℃ of dry inlet temperatures, 50～60 ℃ of temperature outs, 5～10 minutes time of drying, screening particle diameter 3～4mm, 45 °～50 ℃ of cooling inlet temperatures, 20 °～25 ℃ of temperature outs, 5～8 minutes cooling times.