Fertilizer processing system

Abstract

The invention discloses a fertilizer processing system. The system sequentially comprises a feeding device (1), a stirring device (2), a crushing device (3), a primary granulating device (4), a secondary granulating device (5), a primary cooling device (6), a primary screening device (7), a secondary cooling device (8), a secondary screening device (9), a coating device (10) and a weighing and bagging device (11), wherein the rear end of the secondary granulating device (5) is provided with an air outlet pipeline (5-5), and the other end of the first air outlet pipeline (5-5) is provided witha first gravity settling chamber (1). The technical purposes of high particle balling rate and few impurities are achieved through two times of granulation, two times of cooling and two times of screening, a dust removal procedure is arranged at the position of each device of the whole system, and particularly, the problem of dust raising in the fertilizer production process is solved in a targeted mode by adopting a multi-time gravity settling device at the station with the large dust amount.

Description

technical field [0001] The invention belongs to the technical field of granular material production and processing, and in particular relates to a fertilizer processing system. Background technique [0002] Agricultural production is an important economic basis for the survival of the country and people. With the continuous acceleration of the pace of society, traditional agricultural production can no longer meet the needs of modernization. In terms of crop planting and fertilization, the macronutrient elements in the soil nitrogen, Phosphorus and potassium usually cannot meet the needs of crop growth, and fertilizers containing nitrogen, phosphorus, and potassium need to be used to make up for it. Chemical fertilizers are generally inorganic compounds. Any chemical fertilizer containing only one nutrient element that can be marked is called a unit fertilizer, such as nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, etc., containing two or two of the three ...

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Problems solved by technology

[0005] For another example, the patent document with application number CN201610910147.3 discloses a spray dust removal device for chemical fertilizer production. The spray method is used for dust removal, which is not conducive to the reuse of material dust, and it is necessary to add a drainage system for assistance. Not strong;

[0006] The patent document with application number CN201610701611.8 discloses a drying and dedusting device for tail gas used in a fertilizer plant, in which the dedusting device adopts the method of gravity sedimentation and uses a partition plate to realize physical dedusting, but the three-dimensional settling chamber will inevitably increase the construction height and construction cost. Costs, e.g. frame construction, design of multiple partitions, especially inconveniences for the cleaning process

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