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A kind of manufacturing method of high-tower loss-controlled compound fertilizer

A technology for compound fertilizers and manufacturing methods, applied in the direction of urea compound fertilizers, inorganic fertilizers, fertilizer mixtures, etc., can solve the problems of low nutrient utilization rate, loss, and large loss of ordinary fertilizers, and facilitate mechanized fertilization, reduce ammonia loss, and produce low cost effect

Active Publication Date: 2012-02-15
山东金沂蒙生态肥业有限公司
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  • Abstract
  • Description
  • Claims
  • 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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  • A kind of manufacturing method of high-tower loss-controlled compound fertilizer

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Experimental program
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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 discloses a method for manufacturing a high-tower loss-controlled compound fertilizer, which belongs to the technical field of fertilizers. In this method, heated monoammonium phosphate or calcium hydrogen phosphate, potassium chloride or potassium sulfate, and powdered filler are added to the urea melt, and at the same time, fertilizer nutrient loss control agent KS-3 is added to make the additive and urea melt fully Mixing, under the action of urea melting temperature and mechanical stirring, various raw materials are quickly compounded into a low-temperature eutectic with certain fluidity, and then granulated by spraying and granulating in a prilling tower. When falling through the rising air flow, it cools and solidifies, forming a compound fertilizer with the function of controlling the loss of fertilizer nutrients. The process of the method of the invention is easy to transform and convenient to operate.

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 Patents(China)
IPC IPC(8): C05G3/00C05C9/00C05B7/00C05D1/02
Inventor 张超张立省黄滨刘长豹陈召云
Owner 山东金沂蒙生态肥业有限公司
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