Method for preparing high tower control release compound fertilizer

A technology for compound fertilizers and manufacturing methods, applied to urea compound fertilizers, inorganic fertilizers, fertilizer mixtures, etc., can solve the problems of large losses, low nutrient utilization and loss of common fertilizers, achieve low production costs, facilitate mechanized fertilization, and reduce Effect of ammonia loss

Active Publication Date: 2009-05-27
山东金沂蒙生态肥业有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] At present, the compound (mixed) fertilizers produced in China are mainly ordinary compound (mixed) fertilizers or coated slow / controlled release fertilizers. The nutrient utilization rate of ordinary fertilizers is low and the loss is large, and the slow / controlled release fertilizers focus on controlling the release rate of nutrients. The loss-controlling compound fertilizer is to control the loss of nutrients according to the amount of nutrients removed during fertilizer application.

Method used

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  • Method for preparing high tower control release compound fertilizer

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Effect test

Embodiment 1

[0021] Embodiment 1: the manufacture method of high-tower loss-controlled compound fertilizer, concrete process operation steps are as follows:

[0022] 1) Pour granular urea into the receiving port, lift it to the buffer silo through the bucket elevator, and enter the urea melter through the feeding screw. After the urea melts, it flows into the urine buffer tank and is transported to the granulation process by the urea melting pump. The first-level mixing tank on the top of the tower, the urea melt entering the first-level mixing tank is 40 parts by weight.

[0023] 2) Monoammonium phosphate, potassium chloride, and calcium powder are respectively lifted to the silo via a bucket lift, and a weighing scale is designed at the bottom of the silo to measure 25 parts by weight of monoammonium phosphate, 13 parts by weight of potassium chloride, and 16 parts by weight of calcium powder. The powder heater is heated, and the heated material flows into the powder belt conveyor. At th...

Embodiment 2

[0025] Embodiment 2: operation step is the same as embodiment 1, and difference is that each raw material component is as follows:

[0026] 65 parts by weight of urea solution, 40 parts by weight of monoammonium phosphate, 20 parts by weight of potassium chloride, 20 parts by weight of calcium powder, and 8 parts by weight of nutrient loss control agent KS-3.

Embodiment 3

[0027] Embodiment 3: operation step is the same as embodiment 1, and difference is that each raw material component is as follows:

[0028] 50 parts by weight of urea solution, 30 parts by weight of calcium hydrogen phosphate, 25 parts by weight of potassium sulfate, 20 parts by weight of filler gypsum powder, and 7 parts by weight of chemical fertilizer nutrient loss control agent KS-3.

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Abstract

The invention relates to a method for preparing a high-tower loss controlled compound fertilizer, and belongs to the technical field of fertilizer. The method comprises the following steps: adding heated monoammonium phosphate or calcium hydrophosphate, potassium chloride or potassium sulphate, powder stuffing into urea melt, and adding loss control agent KS-3 of fertilizer nutrient into the mixture at the same time, fully mixing the additives and the urea melt, quickly compounding each raw material under the action of mechanical stirring at melt temperature of urea into low-temperature mutual melt with certain flow properties, then granulating the mutual melt by adopting a process of spray granulation, and cooling and solidifying spray drops when falling in a granulation tower to pass through rising air flow to form the compound fertilizer with function of controlling loss of the fertilizer nutrient. The method has the advantages of easy process reform, and convenient operation.

Description

technical field [0001] The invention relates to a method for manufacturing a loss-controlling compound fertilizer, which belongs to the technical field of fertilizers. Background technique [0002] At present, the compound (mixed) fertilizers produced in China are mainly ordinary compound (mixed) fertilizers or coated slow / controlled release fertilizers. The nutrient utilization rate of ordinary fertilizers is low and the loss is large, and the slow / controlled release fertilizers focus on controlling the release rate of nutrients. The loss-controlling compound fertilizer is to control the loss of nutrients according to the amount of nutrients removed during fertilizer application. On the one hand, it can not only meet the nutrient requirements of crop production, but also fix excess nutrients in the soil; on the other hand, it can control the volatilization of ammonia nitrogen and reduce the greenhouse effect. It can solve the eutrophication of water caused by nitrogen and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05C9/00C05B7/00C05D1/02
Inventor 张立省张超黄滨刘祥臻刘长豹杜之方陈召云
Owner 山东金沂蒙生态肥业有限公司
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