Melt method granulation equipment for high density urine base composite fertilizer

Abstract

The invention discloses melt method granulation equipment for a high density urine base composite fertilizer. The equipment includes at least one molten-bath, a filter in insulating connection with a discharge hole of the at least one molten-bath, a distributing device in insulating connection with a discharge hole of the filter and a rotary steel-band chilling granulator arranged under the distributing device. The distributing device includes an internal feeding stator and a distributing device outer cylinder rotating relatively to the internal feeding stator; the discharge hole of the filter is connected with the internal feeding stator; the distributing device outer cylinder is provided with a plurality of apertures; besides, the internal feeding stator of the distributing device and the filter are both provided with heating members, and a cooling member is arranged under a steel-band of the rotary steel-band chilling granulator. Equipment employing the above structure is simple in structure, not much influenced by seasonal climate change and not likely to generate material return, and can produce particles with large particle intensity.

Description

technical field [0001] The invention relates to a granulation device for high-concentration urea-based compound fertilizer, in particular to a device for implementing granulation by melt method. Background technique [0002] Urine-based compound fertilizer is a kind of basic compound fertilizer with great development potential. When producing this compound fertilizer, it needs to be granulated. The common granulation method of urea-based compound fertilizer is: aggregate method. [0003] Among them, the agglomeration method is to add ammonia, sulfuric acid, urine, steam, and return materials to the drum granulator at the same time to form granules. The water-containing particles are then dried in a tumble dryer, sieved, crushed, and cooled. This method has several disadvantages: long process, high energy consumption, serious environmental pollution and tail gas treatment. [0004] In order to overcome the defects of the granulation method, people invented the melt granula...

AI Technical Summary

Problems solved by technology

This method has several disadvantages: long process, high energy consumption, serious environmental pollution and tail gas treatment, etc.

This kind of granulation equipment has certain disadvantages: 1. Large investment; 2. It is prone to scarring; 3. It is easy to produce dust and small particles; 4. The strength of the produced particles is small, only 20-30N. 5. It is greatly affected by seasonal climate changes and affects production

Images