Device for producing granular ammonium sulfate using industrial monoammonium phosphate slurry as binder
By using industrial monoammonium phosphate slurry as a binder, a device was designed to solve the problem of tube blocking and equipment scarring caused by compound precipitates in the wet process, and the effect of producing high-quality large-grain ammonium sulfate was achieved.
Patent Information
- Application Number
- CN202421433040.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-21
AI Technical Summary
When producing industrial monoammonium phosphate by wet process, compound precipitates will cause adverse effects such as tube blockage and scarring of equipment.
Industrial monoammonium phosphate slurry is used as the binder, and large-grain ammonium sulfate of 1.8mm-4.2mm is produced through slurry precast tanks, precast slurry conveying pumps, plate mixers, extrusion and granulators and other equipment.
It effectively solves the problems of tube blocking and equipment scarring caused by compound precipitates. At the same time, the quality of large particles of ammonium sulfate produced is not affected, and the binder used is green and pollution-free.
Smart Images
Figure CN222694682U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for producing granular ammonium sulfate by taking industrial monoammonium phosphate slurry as a binder. Background Art
[0002] When the wet process is used to produce industrial monoammonium phosphate, the various impurity ions brought in by the raw material wet phosphoric acid undergo complex reactions when they are neutralized by ammonia, generating compounds such as phosphates, sulfates, and fluoride salts of iron, aluminum, and magnesium that precipitate into the filter residue. These complex compound precipitates mainly exist in the form of MgHPO4, Ca5 (PO4) 3OH, (Fe, Al) Mg (NH4) 2 (HPO4) 2 F3, (Fe, Al) NH4 (HPO4) 2 · H2O, etc. This part of the filter residue has strong viscosity. Directly using it in large quantities for fertilizer production will cause adverse effects such as pipe blockage and equipment scarring. However, on the other hand, using it as a small amount of additives is also conducive to the formation of large particles from powder. Utility Model Content
[0003] The utility model aims to provide a device for producing granular ammonium sulfate by using industrial monoammonium phosphate slurry as a binder. When the industrial monoammonium phosphate is produced by a wet process, compound precipitates may cause problems such as pipe blockage and equipment scarring.
[0004] In order to solve the above problems, the technical solution of the utility model is:
[0005] The device for producing granular ammonium sulfate using industrial monoammonium phosphate slurry as a binder comprises a slurry prefabrication tank, a prefabricated slurry conveying pump, an ammonium sulfate powder conveying belt, a shovel mixer, an extrusion granulator, a granular ammonium sulfate mixing belt, a screening machine and a large-particle ammonium sulfate conveying belt; the slurry prefabrication tank is connected to the shovel mixer feed port through a pipeline, the prefabricated slurry conveying pump is installed on the pipeline, the ammonium sulfate powder conveying belt discharge end is connected to the shovel mixer feed port; the shovel mixer discharge port is connected to the extrusion granulator feed port, the extrusion granulator discharge port is connected to the screening machine feed port through the granular ammonium sulfate mixing belt, the screening machine screened qualified particles outlet is connected to the next processing unit through the large-particle ammonium sulfate conveying belt, and the screening machine screened unqualified particles outlet is connected to the extrusion granulator.
[0006] The beneficial effects of the utility model are:
[0007] (1) This device can produce large-particle ammonium sulfate of 1.8mm-4.2mm.
[0008] (2) The binder in this device is industrial monoammonium phosphate filter press slurry, which is not an organic binder and is green and pollution-free. At the same time, the binder contains high and medium elements such as P, N, and Mg, which will not affect the quality of large-particle ammonium sulfate. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The utility model is further described below in conjunction with the accompanying drawings:
[0010] Figure 1 It is a structural schematic diagram of the utility model.
[0011] In the figure: slag ammonium sulfate powder conveying belt 1, steam coil 2, slurry prefabrication tank 3, prefabricated slag slurry conveying pump 4, scraper mixer 5, extrusion granulator 6, granular ammonium sulfate mixing belt 7, screening machine 8, large granular ammonium sulfate conveying belt 9. DETAILED DESCRIPTION
[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0013] The device for producing granular ammonium sulfate using industrial monoammonium phosphate slurry as a binder comprises a slurry prefabrication tank 3, a prefabricated slurry conveying pump 4, an ammonium sulfate powder conveying belt 1, a shovel mixer 5, an extrusion granulator 6, a granular ammonium sulfate mixing belt 7, a screening machine 8 and a large-particle ammonium sulfate conveying belt 9; the slurry prefabrication tank 3 is connected to a feed port of the shovel mixer 5 through a pipeline, the prefabricated slurry conveying pump 4 is installed on the pipeline, the discharge end of the ammonium sulfate powder conveying belt 1 is connected to the feed port of the shovel mixer 5; the discharge port of the shovel mixer 5 is connected to a feed port of an extrusion granulator 6, the discharge port of the extrusion granulator 6 is connected to a feed port of a screening machine 8 through a granular ammonium sulfate mixing belt 7, the outlet of the screening machine 8 for screened qualified particles is connected to a next processing unit through a large-particle ammonium sulfate conveying belt 9, and the outlet of the screening machine 8 for screened unqualified particles is connected to the extrusion granulator 6.
[0014] The interior of the lifting plate mixer 5 is a spiral lifting plate structure.
[0015] The extrusion granulator 6 is a double-roll extrusion granulator 6 .
[0016] A steam coil 2 is provided in the slurry prefabrication tank 3 .
[0017] When the utility model is in use, the industrial monoammonium phosphate filter press slurry is conveyed to the slurry prefabrication tank 3, the stirring paddle is turned on, the low-pressure steam is turned on, and after the industrial monoammonium phosphate slurry is prefabricated, the prefabricated slurry is conveyed to the scraper mixer 5 by the prefabricated slurry conveying pump 4, and at the same time, the ammonium sulfate powder conveying belt 1 is turned on, and ammonium sulfate powder is added to the scraper mixer 5. The ammonium sulfate powder and the prefabricated slurry are added according to a certain mass ratio, and the mixed material is discharged from the bottom of the scraper mixer 5 to the extrusion granulator 6. The granular ammonium sulfate material after extrusion granulation is conveyed to the screening machine 8 through the granular ammonium sulfate mixing belt 7, and the unqualified granular ammonium sulfate is returned to the extrusion granulator 6 after screening. The qualified large-granular ammonium sulfate (1.8mm-4.2mm) is conveyed to the finished product drying and packaging section through the large-granular ammonium sulfate conveying belt 9.
[0018] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be deemed to be limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.
Claims
1. A device for producing granular ammonium sulfate using industrial monoammonium phosphate slurry as a binder, characterized in that: The invention comprises a slurry prefabrication tank (3), a prefabricated slurry delivery pump (4), an ammonium sulfate powder delivery belt (1), a shovel mixer (5), an extrusion granulator (6), a granular ammonium sulfate mixing belt (7), a screening machine (8) and a large-granular ammonium sulfate delivery belt (9); the slurry prefabrication tank (3) is connected to the feed port of the shovel mixer (5) through a pipeline, the prefabricated slurry delivery pump (4) is installed on the pipeline, the discharge end of the ammonium sulfate powder delivery belt (1) is connected to the feed port of the shovel mixer (5); the discharge port of the shovel mixer (5) is connected to the feed port of the extrusion granulator (6), the discharge port of the extrusion granulator (6) is connected to the feed port of the screening machine (8) through the granular ammonium sulfate mixing belt (7), the qualified particle outlet of the screening machine (8) is connected to the next processing unit through the large-granular ammonium sulfate delivery belt (9), and the unqualified particle outlet of the screening machine (8) is connected to the extrusion granulator (6).
2. The device for producing granular ammonium sulfate using industrial monoammonium phosphate slurry as a binder according to claim 1, characterized in that: The interior of the lifting plate mixer (5) is a spiral lifting plate structure.
3. The device for producing granular ammonium sulfate using industrial monoammonium phosphate slurry as a binder according to claim 1, characterized in that: The extrusion granulator (6) is a double-roller extrusion granulator (6).
4. The device for producing granular ammonium sulfate using industrial monoammonium phosphate slurry as a binder according to any one of claims 1 to 3, characterized in that: A steam coil (2) is provided in the slurry prefabrication tank (3).