Equipment for recycling gypsum in phosphate ore
By designing a gypsum recycling equipment in phosphate ore including a dosing feeder, belt conveyor, slurry dryer and fluidized calciner, the problem of poor drying and calcining effects in gypsum recycling and utilization in traditional phosphorus chemical production is solved, and high-quality construction gypsum powder production is achieved.
Patent Information
- Application Number
- CN202421317980.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The recycling and utilization of gypsum in traditional phosphorus chemical production has the problem that the free water cannot be effectively removed during the drying process and the calcination process is affected by the fluctuation of coal-fired furnace temperature.
A kind of gypsum recycling equipment in phosphate ore was designed, including a dosing feeder, belt conveyor, slurry dryer, fluidized calcinerator, etc. The effective drying and calcining of gypsum is achieved through technical means such as thermal oil heating and low-temperature calcination.
Effectively remove free water from gypsum, improves the calcination effect, and improves the strength and quality of building gypsum powder, so that it meets or exceeds national standards.
Smart Images
Figure CN222631316U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of recycling equipment, in particular to a recycling equipment for gypsum in phosphate ore. Background Art
[0002] With the increasingly stringent environmental protection requirements, the recycling of gypsum, a byproduct of phosphorus chemical production, has become a new technical problem. The process deficiencies of the traditional coal-fired heat source fast burning method or the hammer drying fast burning plus heat transfer oil calcination two-step method are becoming more and more obvious: 1. Free water cannot be effectively removed during the drying process; 2. The calcination process is affected by the high and low temperature of the coal-fired furnace, and the residence time is short, and the calcination effect is not good. Therefore, we proposed a gypsum recycling equipment in phosphate ore to solve the above problems. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides a device for recycling gypsum in phosphate ore, which solves the problems that free water cannot be effectively removed during the drying process and the calcination process is affected by the fluctuating temperature of the coal-fired furnace, and the residence time is short and the calcination effect is poor.
[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a device for recycling gypsum in phosphate ore, comprising a quantitative feeder, a belt conveyor is arranged on one side of the discharging end of the quantitative feeder, and a wind-locking feeder is arranged on one side of the discharging end of the belt conveyor, a slurry dryer is arranged on one side of the discharging end of the wind-locking feeder, a screw conveyor is arranged on one side of the discharging end of the slurry dryer, and an oil storage machine is arranged on one side of the slurry dryer;
[0005] A transition component is provided on one side of the discharge end of the screw conveyor, and a fluidized bed calciner is provided on one side of the discharge end of the transition component, a cooling and aging machine is provided on one side of the discharge end of the fluidized bed calciner, a pin grinder is provided on one side of the discharge end of the cooling and aging machine, an FU conveyor is provided on one side of the discharge end of the pin grinder, a cache component is provided on one side of the discharge end of the FU conveyor, and a packaging machine is provided on one side of the discharge end of the cache component.
[0006] Preferably, the transition assembly includes a first bucket elevator and a buffer bin, the feed end of the first bucket elevator is located on the discharge end side of the screw conveyor, the discharge end of the first bucket elevator is located on the feed end side of the buffer bin, and the discharge end side of the buffer bin is located on the feed end side of the fluidized bed calciner.
[0007] Preferably, the cache component includes a second bucket elevator and an aging bin, the feed end of the second bucket elevator is located on the discharge end side of the FU conveyor, the discharge end of the second bucket elevator is located on the feed end side of the aging bin, and the discharge end of the aging bin is located on the feed end side of the packaging machine.
[0008] Preferably, the oil outlet end of the oil storage machine is conductively connected to the oil inlet end of the slurry dryer through a first pipe, and the oil outlet end of the slurry dryer is conductively connected to the oil inlet end of the oil storage machine through a second pipe, and the middle part of the first pipe is wrapped around the outer wall of the fluidized calciner.
[0009] Preferably, it also includes an iron remover, which is arranged on one side above the belt conveyor.
[0010] Preferably, both the first pipe and the second pipe are insulated pipes.
[0011] Preferably, the oil storage machine stores heat transfer oil. Beneficial Effects
[0012] The utility model provides a device for recycling gypsum in phosphate ore. Compared with the prior art, it has the following beneficial effects:
[0013] The equipment for recycling gypsum in phosphate ore first feeds the phosphogypsum raw material into a slurry dryer through a quantitative feeder, a belt conveyor, and an air-locking feeder, and the heat transfer oil in the oil storage machine is connected to the oil inlet end of the slurry dryer through a first pipeline, and the middle part of the first pipeline is wound around the outer wall of the fluidized bed calciner, so that the fluidized bed calciner can heat the heat transfer oil flowing through the first pipeline, so that the slurry dryer can indirectly dry the material to reduce the free water content of the material to less than 3%, so that the material with most of the free water removed is passed through the screw conveyor and the first bucket elevator. Together with the buffer bin, it enters the boiling fluidized bed calciner and is calcined at a low temperature of 160-180℃ to remove crystal water. The semi-finished product is then ground, modified and cooled by the cooling and aging machine, pin mill and FU conveyor, and then transported to the finished product aging bin through the second bucket elevator. After aging, high-strength and excellent-performance building gypsum powder is obtained. Finally, the building gypsum powder can be packaged by the packaging machine. The whole process can reuse the gypsum in the phosphate ore to produce building gypsum powder, and at the same time improve the strength and quality of the finished building gypsum powder to meet or exceed the national standard. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the process structure of the utility model.
[0015] In the figure: 1. quantitative feeder; 2. belt conveyor; 3. air-locking feeder; 4. slurry dryer; 5. screw conveyor; 6. oil storage machine; 7. first bucket elevator; 8. buffer bin; 9. fluidized bed calciner; 10. cooling and aging machine; 11. pin mill; 12. FU conveyor; 13. second bucket elevator; 14. aging bin; 15. packaging machine; 16. iron remover. DETAILED DESCRIPTION
[0016] 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.
[0017] See also Figure 1 The utility model provides a technical solution: a device for recycling gypsum in phosphate ore, comprising a quantitative feeder 1, a belt conveyor 2 is arranged on one side of the discharging end of the quantitative feeder 1, and a wind-locking feeder 3 is arranged on one side of the discharging end of the belt conveyor 2, a slurry dryer 4 is arranged on one side of the discharging end of the wind-locking feeder 3, a screw conveyor 5 is arranged on one side of the discharging end of the slurry dryer 4, and an oil storage machine 6 is arranged on one side of the slurry dryer 4; a transition component is arranged on one side of the discharging end of the screw conveyor 5, and a fluidized calciner 9 is arranged on one side of the discharging end of the transition component, and a cooling and aging machine 10 is arranged on one side of the discharging end of the fluidized calciner 9, A pin mill 11 is provided on one side of the discharging end of the cooling and aging machine 10, a FU conveyor 12 is provided on one side of the discharging end of the pin mill 11, a cache component is provided on one side of the discharging end of the FU conveyor 12, a packaging machine 15 is provided on one side of the discharging end of the cache component, the transition component includes a first bucket elevator 7 and a buffer bin 8, the feeding end of the first bucket elevator 7 is located on one side of the discharging end of the screw conveyor 5, the discharging end of the first bucket elevator 7 is located on one side of the feeding end of the buffer bin 8, the discharging end of the buffer bin 8 is located on one side of the feeding end of the fluidized calciner 9, the cache component includes a second bucket elevator 13 and an aging bin 14, the feeding end of the second bucket elevator 13 is located on the FU On one side of the discharge end of the conveyor 12, the discharge end of the second bucket elevator 13 is located on one side of the feed end of the aging bin 14, and one side of the discharge end of the aging bin 14 is located on one side of the feed end of the packaging machine 15. The oil discharge end of the oil storage machine 6 is connected to the oil inlet end of the slurry dryer 4 through a first pipeline, and the oil discharge end of the slurry dryer 4 is connected to the oil inlet end of the oil storage machine 6 through a second pipeline. The middle part of the first pipeline is wound around the outer wall of the fluidized bed calciner 9, and the oil storage machine 6 stores heat transfer oil;
[0018] First, the phosphogypsum raw material is fed into the slurry dryer 4 through the quantitative feeder 1, the belt conveyor 2, and the air-locking feeder 3. The heat transfer oil in the oil storage machine 6 is connected to the oil inlet end of the slurry dryer 4 through the first pipeline, and the middle part of the first pipeline is wound around the outer wall of the fluidized bed calciner 9, so the fluidized bed calciner 9 can heat the heat transfer oil flowing through the first pipeline, so that the slurry dryer 4 can indirectly dry the material to reduce the free water content of the material to less than 3%, so that the material with most of the free water removed enters the boiling water through the screw conveyor 5, the first bucket elevator 7 and the buffer bin 8. The fluidized bed calciner 9 performs low temperature calcination at 160-180°C to remove crystal water. The semi-finished product is then ground, modified and cooled by a cooling and aging machine 10, a pin mill 11 and an FU conveyor 12, and then conveyed to a finished product aging bin 14 by a second bucket elevator 13. After aging, a building gypsum powder with high strength and excellent performance is obtained. Finally, the building gypsum powder can be packaged by a packaging machine 15. The whole process can reuse the gypsum in the phosphate rock to produce building gypsum powder, while improving the strength and quality of the finished building gypsum powder to meet or exceed the national standard.
[0019] See also Figure 1 , and also includes an iron remover 16, which is arranged on one side above the belt conveyor 2 and can remove iron from the raw materials transported by the belt conveyor 2.
[0020] See also Figure 1 , both the first pipe and the second pipe are thermally insulated pipes, which can reduce heat loss.
[0021] During operation, the phosphogypsum raw material is first fed into the slurry dryer 4 through the quantitative feeder 1, the belt conveyor 2, and the air-locking feeder 3. The heat transfer oil in the oil storage machine 6 is connected to the oil inlet end of the slurry dryer 4 through the first pipeline, and the middle part of the first pipeline is wound around the outer wall of the fluidized bed calciner 9, so the fluidized bed calciner 9 can heat the heat transfer oil flowing through the first pipeline, so that the slurry dryer 4 can indirectly dry the material to reduce the free water content of the material to less than 3%, so that the material with most of the free water removed is fed together through the screw conveyor 5, the first bucket elevator 7 and the buffer bin 8. The semi-finished product is then fed into a boiling fluidized bed calciner 9 and calcined at 160-180°C to remove crystal water. The semi-finished product is then ground, modified and cooled by a cooling and aging machine 10, a pin mill 11 and an FU conveyor 12, and then fed into a finished product aging bin 14 by a second bucket elevator 13. After aging, a building gypsum powder with high strength and excellent performance is obtained. Finally, the building gypsum powder is packaged by a packaging machine 15. The whole process can reuse the gypsum in the phosphate rock to produce building gypsum powder, while improving the strength and quality of the finished building gypsum powder to meet or exceed the national standard.
[0022] In summary, the entire process of the device can reuse gypsum in phosphate rock to produce building gypsum powder, while improving the strength and quality of the finished building gypsum powder to meet or exceed national standards.
[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
Claims
1. A device for recycling gypsum from phosphate rock, characterized in that: The invention comprises a quantitative feeder (1), a belt conveyor (2) being arranged on one side of the discharge end of the quantitative feeder (1), an air-locking feeder (3) being arranged on one side of the discharge end of the belt conveyor (2), a slurry dryer (4) being arranged on one side of the discharge end of the air-locking feeder (3), a screw conveyor (5) being arranged on one side of the discharge end of the slurry dryer (4), and an oil storage machine (6) being arranged on one side of the slurry dryer (4); A transition component is provided on one side of the discharge end of the screw conveyor (5), and a fluidized bed calciner (9) is provided on one side of the discharge end of the transition component; a cooling and aging machine (10) is provided on one side of the discharge end of the fluidized bed calciner (9); a pin grinder (11) is provided on one side of the discharge end of the cooling and aging machine (10); an FU conveyor (12) is provided on one side of the discharge end of the pin grinder (11); a buffer component is provided on one side of the discharge end of the FU conveyor (12); and a packaging machine (15) is provided on one side of the discharge end of the buffer component.
2. The equipment for recycling gypsum in phosphate rock according to claim 1, characterized in that: The transition assembly comprises a first bucket elevator (7) and a buffer bin (8), wherein a feed end of the first bucket elevator (7) is located on one side of a discharge end of the screw conveyor (5), a discharge end of the first bucket elevator (7) is located on one side of a feed end of the buffer bin (8), and a discharge end of the buffer bin (8) is located on one side of a feed end of the fluidized bed calciner (9).
3. The equipment for recycling gypsum in phosphate rock according to claim 1, characterized in that: The buffer assembly comprises a second bucket elevator (13) and an aging bin (14); the feed end of the second bucket elevator (13) is located on the discharge end side of the FU conveyor (12); the discharge end of the second bucket elevator (13) is located on the feed end side of the aging bin (14); and the discharge end side of the aging bin (14) is located on the feed end side of the packaging machine (15).
4. The equipment for recycling gypsum in phosphate rock according to claim 1, characterized in that: The oil outlet end of the oil storage machine (6) is conductively connected to the oil inlet end of the slurry dryer (4) via a first pipeline, and the oil outlet end of the slurry dryer (4) is conductively connected to the oil inlet end of the oil storage machine (6) via a second pipeline, and the middle portion of the first pipeline is wound around the outer wall of the fluidized bed calciner (9).
5. The equipment for recycling gypsum in phosphate rock according to claim 1, characterized in that: It also comprises an iron remover (16), wherein the iron remover (16) is arranged on one side above the belt conveyor (2).
6. The equipment for recycling gypsum in phosphate rock according to claim 4, characterized in that: The first pipe and the second pipe are both heat-insulated pipes.
7. The equipment for recycling gypsum in phosphate rock according to claim 1, characterized in that: The oil storage machine (6) stores heat transfer oil.