CN1559995A

CN1559995A - Process for producing composite manure by non drying physics method

Info

Publication number: CN1559995A
Application number: CNA2004100237367A
Authority: CN
Inventors: 张树森
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-12
Filing date: 2004-03-12
Publication date: 2005-01-05
Anticipated expiration: 2024-03-12
Also published as: CN100389098C

Abstract

The invention is a process method of producing compound fertilizer by physical method without drying, on the basis of meeting the ordinary proportion of N, P and K content in compound fertilizers, mixing in 15% drier. The producing process: using a two-stage granulator to make particles and then screening them; as primary granulation, uniformly mixing the raw material together with the 10% drier; as secondary granulation, adding in the rest 5% drier to make particles and then screening 80-90% finished products, packaging and piling for 40-60 minutes; the residual big particles and crushed aggregates return to the granulator to make into particles again. It omits two links of drying and cooling in normal methods, use manpower and material resources sparingly and reducing the cost.

Description

Exempt to dry the physics method and produce the compound fertilizer technology method

Affiliated technical field

The present invention relates to a kind of compound fertilizer production technology method, belong to chemical field.

Technical background

At present, compound manure on the market is a lot, and its prescription effect is all different, and production technique is also different, production technique is essentially granulation-oven dry-cooling-screening, and the shortcoming that this processing method exists is that operational path is long, equipment has high input, cost height, complex process; The energy consumption height because the oven dry need with coal or; Nutrient scatters and disappears, and purity nitrogen is because of adding a heat loss 0.5-1.0 nutrient, and induced draft fan is taken away finished product 3%-5%, and per ton cost is up to 1200 yuan, so not only increased cost but also reduced fertilizer efficiency.

Summary of the invention

The objective of the invention is on the basis of existing general composite fertilizer producing process, dry the physics method for exempting from of solving that above-mentioned existing in prior technology shortcoming provides that a kind of technology is simple, cost is low, fertilizer efficiency is high and produce the compound fertilizer technology method.

Technical scheme of the present invention is that this kind exempts to dry physics method production compound fertilizer technology method, it is characterized in that following steps are arranged:

Prescription: on the basis of satisfying general composite fertilizer N, P, K content proportioning, allocate siccative 15% into; Contain Ca, Mg, S moderate-element in the siccative.Wherein, two of described N nutrient contents can be from ammonium sulfate.Contain magnesium oxide 18% in the siccative, contain effective sulphur 15%, contain effective calcium 10%.

And different, those skilled in the art can come to determine as the case may be according to different areas, different crop for general composite fertilizer N, P, K content proportioning.On the basis of satisfying N, P, K content and siccative composition, can add raw materials such as zeolite powder in the granulation process.

Be rich in moderate-elements such as Ca, Mg, S in the siccative composition, also contain micronutrient elements such as Zn, Ca, Mn, Fe, composite fertilizer's fertilizer efficiency is obviously improved.Siccative can be made up of in 3: 1: 0.5 ratio anhydrous magnesium sulfate, calcium sulphate hemihydrate and zeolite powder commonly used.

Production technique: utilize disk with secondary granulation function or rotary drum granulator granulation, screening then;

During a granulation that the raw material and 10% siccative of general composite fertilizer N, P, K content is homogeneously mixing together; The siccative that adds residue 5% in the secondary granulation district again, granulation is after the finished product of screening 80-90% can be packed, and the finished product standard for acceptance that can reach composite fertilizer in 40-60 minute is stacked in the packing back; Residual big particles and particle return tablets press granulation again.As common granulation, must spray into an amount of water.

The invention has the beneficial effects as follows: because the present invention is that the water of stable state is present in the particle with the water crystallization that is sprayed in the common granulation process, thereby can removes in the usual method oven dry from and cool off two links, save manpower and materials, reduce cost.Oven drying method production composite fertilizer ratio is per ton cost-saved more than 100 yuan with oven drying method production composite fertilizer with exempting from, and fertilizer efficiency obviously improves.

Embodiment

Be example to produce 1000Kg composite fertilizer below, illustrate that exempting to dry the physics method produces the compound fertilizer technology method:

The first step is got the raw materials ready: on the basis of satisfying general composite fertilizer N, P, K (12%: 8%: 13%) content proportioning, allocate siccative 15% into; Contain Ca, Mg, S moderate-element in the siccative.Wherein, two of described N nutrient contents are from ammonium sulfate.Contain magnesium oxide 18% in the siccative, contain effective sulphur 15%, contain effective calcium 10%.Be specially:

Ammonium sulfate 100Kg monoammonium phosphate 182Kg

Urea 174Kg Repone K 217Kg

Siccative 150Kg water 50Kg

Zeolite powder 127Kg

Siccative 150Kg by anhydrous magnesium sulfate commonly used, calcium sulphate hemihydrate and aforementioned outside zeolite powder form in 3: 1: 0.5 ratio.

The second step production technique: utilize disk with secondary granulation function or rotary drum granulator granulation, screening then.

During a granulation that above-mentioned ammonium sulfate, monoammonium phosphate, urea, Repone K, zeolite powder and aforementioned 10% siccative is homogeneously mixing together; The siccative that adds residue 5% in the secondary granulation district again, granulation is after the finished product of screening 80-90% can be packed, and the finished product standard for acceptance that can reach composite fertilizer in 40-60 minute is stacked in the packing back; Residual big particles and particle return tablets press granulation again.

Embodiments of the invention are not limited thereto, and other embodiment can analogize.

The present invention through the practice of science and and use, solved original production cost height, problem that fertilizer efficiency is low.

Claims

1, exempt to dry the physics method and produce the compound fertilizer technology method, it is characterized in that following steps are arranged:

Prescription: on the basis of satisfying general composite fertilizer N, P, K content proportioning, allocate siccative 15% into; Contain Ca, Mg, S moderate-element in the siccative;

Production technique: sieve after utilizing disk with secondary granulation function or rotary drum granulator granulation;

During a granulation that the raw material and 10% siccative of general composite fertilizer N, P, K content is homogeneously mixing together; The siccative that adds residue 5% in the secondary granulation district again, granulation is after the finished product of screening 80-90% can be packed, and the finished product standard for acceptance that can reach composite fertilizer in 40-60 minute is stacked in the packing back; Residual big particles and particle return tablets press granulation again.

2, according to claim 1ly exempt to dry the physics method and produce the compound fertilizer technology method, it is characterized in that siccative is made up of in 3: 1: 0.5 ratio anhydrous magnesium sulfate, calcium sulphate hemihydrate and zeolite powder commonly used.