CN212357339U

CN212357339U - Micro-fine particle mineral powder granulation equipment

Info

Publication number: CN212357339U
Application number: CN202020934742.2U
Authority: CN
Inventors: 彭忠辉; 裴广林; 赵江伟; 江智华; 常志涛; 高扬; 刘军
Original assignee: Sichuan Lomon Mining & Metallurgy Co ltd
Current assignee: Sichuan Bailong mining and Metallurgy Co.,Ltd.
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-01-15
Anticipated expiration: 2030-05-28

Abstract

The utility model belongs to the technical field of pelletizing equipment, concretely relates to fine particle powdered ore granulation equipment. Solves the problem that the smelting furnace in the prior art has poor air permeability and more foam slag in the smelting process. The utility model provides a fine particle powdered ore granulation equipment, including filtration system, the heating system, granulation system and collecting system, filtration system is provided with the process chamber, filtration system is link up with heating system through the process chamber mutually, heating system includes the box, preheat subassembly and transport assembly, the box up end is equipped with the pan feeding mouth, one side that filtration system was kept away from to the box is provided with the gas outlet, preheat the subassembly and all set up inside the box with transport assembly, preheat the subassembly and be connected with the box up end, transport assembly and box lower terminal surface are connected, heating system and granulation system are connected, granulation system is provided with the spraying subassembly, the spraying subassembly is connected with granulation system. By pelletizing the mineral powder, the air permeability of the mineral powder during smelting is enhanced, and the formation of foam slag in the smelting process is avoided.

Description

Micro-fine particle mineral powder granulation equipment

Technical Field

The utility model belongs to the technical field of pelletizing equipment, concretely relates to fine particle powdered ore granulation equipment.

Background

In both blast furnace reduction smelting and electric furnace reduction smelting, fine particle mineral powder is required to be put into a furnace for high-temperature smelting so as to extract required substances, and certain requirements are imposed on the diameter of raw material particles. Because the volume of the ore powder is too small, the air permeability is poor after the ore powder enters the smelting furnace, and the problem that more foam slag exists in the smelting process is usually caused, the ore powder needs to be treated, and the air permeability is improved, so that the formation of the foam slag in the smelting process is avoided.

SUMMERY OF THE UTILITY MODEL

Smelting furnace gas permeability among the prior art is relatively poor, can cause to smelt the in-process and have the more problem of foam sediment, the utility model provides a fine grain powdered ore granulation equipment, its aim at: the mineral powder is pelletized, so that the air permeability of the mineral powder during smelting is enhanced, and the formation of foam slag in the smelting process is avoided.

The utility model adopts the technical scheme as follows:

the utility model provides a fine particle powdered ore granulation equipment, includes filtration system, heating system, granulation system and collecting system, filtration system is provided with the process chamber, filtration system link up with heating system through the process chamber mutually, heating system includes the box, preheats subassembly and transport module, the box up end is equipped with the pan feeding mouth, one side that filtration system was kept away from to the box is provided with the gas outlet, preheat the subassembly and all set up inside the box with transport module, granulation system is provided with the spraying subassembly, the spraying subassembly is connected with granulation system.

In the traditional smelting reduction process of the mineral powder, as the mineral powder is fine, the mineral powder has poor air permeability in the smelting process, and more foam slag can appear. According to the technical scheme, the mineral powder is pre-oxidized, preheated and pelletized, so that the volume of the mineral powder is increased, and the oxidized mineral powder is of a porous structure, so that the air permeability of the mineral powder in a smelting furnace is enhanced, foam slag is prevented from being generated during smelting, the raw material cost is saved, and the production efficiency is improved.

Preferably, one side of the filtering system, which is far away from the treatment cavity, is provided with an air draft assembly, the air draft assembly is used for sucking air into the filtering system, the upper end face of the filtering system is provided with an opening and a baffle, and the baffle is used for opening or closing the opening. At least one filter screen is arranged inside the filtering system and used for filtering air sucked by the air draft assembly. The air draft assembly can accelerate air flow and oxidation reaction of mineral powder, and the filter screen can filter dust with large volume in air, so that dust is prevented from entering the air draft assembly.

Preferably, at least one first rotating plate and at least one second rotating plate are arranged in the treatment cavity, the first rotating plate and the second rotating plate are rotatably connected with the treatment cavity, a first power device and a second power device are arranged on the outer wall of the treatment cavity, the first power device is used for controlling the rotation of the first rotating plate, and the second power device is used for controlling the rotation of the second rotating plate. The angles of the first rotating plate and the second rotating plate with the inner wall of the processing cavity are adjusted by controlling the power device, so that the flow rate of air entering the heat collecting assembly is changed.

Preferably, the feeding port is provided with a feeding device which is communicated with the box body, and the feeding device is further provided with a sealing device which is used for limiting the outflow of gas in the box body and increasing the sealing performance of the box body.

Preferably, the air outlet is provided with a fan, and the fan is used for pumping out air in the box body. The fan can discharge other redundant gases such as carbon dioxide generated by preheating in the box body out of the box body.

Preferably, the pelletizing system is provided with a dispersing component, and the heat collecting system is connected with the pelletizing system through the dispersing component. The dispersion assembly can uniformly drop the preheated ore powder into the collection system.

Preferably, the granulation system includes and revolves from groove, broach structure and mount, and the broach structure passes through the mount with revolving from the groove and is connected, and the broach structure is equipped with at least one breach. The spin-off tank is connected with the collecting system, and the horizontal height of one end of the spin-off tank close to the collecting system is lower than the horizontal height of one end of the spin-off tank far away from the collecting system. Mineral powder particles fall at one end with higher height of the spiral separation groove, mineral powder can roll along the length direction of the spiral separation groove, and the comb tooth structure rotates to comb and separate the agglomerated mineral powder particles.

Preferably, the collection system includes screening net, first collecting vat and second collecting vat, and first collecting vat is installed in screening net and is kept away from the one end of whirling groove, and the second collecting vat sets up under screening net. The collecting system can be used for screening the mineral powder particles and classifying the mineral powder particles, unqualified mineral powder particles enter the first collecting tank, and qualified mineral powder particles enter the second collecting tank.

Preferably, the screening net is provided with screening hole and speed reduction stick, and the diameter in screening hole is 2 ~ 5mm, and speed reduction stick and screening hole interval are installed in screening net bottom, and the length direction of speed reduction stick is parallel with screening net width direction. The mineral powder particles are screened, and the speed reducing rod can reduce the moving speed of the mineral powder particles on the screening net, so that the screening effect is improved.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. according to the technical scheme, the mineral powder is pre-oxidized, preheated and pelletized, so that the volume of the mineral powder is increased, and the oxidized mineral powder is of a porous structure, so that the air permeability of the mineral powder in a smelting furnace is enhanced, foam slag is prevented from being generated during smelting, the raw material cost is saved, and the production efficiency is improved.

2. The air draft assembly can accelerate air flow and oxidation reaction of mineral powder, and the filter screen can filter dust with large volume in air, so that dust is prevented from entering the air draft assembly.

3. The angles of the first rotating plate and the second rotating plate with the inner wall of the processing cavity are adjusted through the power device, the flow rate of air entering the heat collecting assembly is changed, and the oxidation of the mineral powder is accelerated.

4. The sealing device is used for limiting the outflow of gas in the box body and increasing the sealing performance of the box body.

5. The fan can discharge other redundant gases such as carbon dioxide generated by preheating in the box body out of the box body.

6. The dispersion assembly can uniformly drop the preheated mineral powder into the collection system, and the spraying assembly is favorable for spraying the surface of the mineral powder.

7. The rotation of the spin-off assembly can comb and separate agglomerated mineral powder particles, so that the diameters of the mineral powder particles are between 2 mm and 5 mm.

8. The collecting system can be used for screening the mineral powder particles and classifying the mineral powder particles, unqualified mineral powder particles enter the first collecting tank, and qualified mineral powder particles enter the second collecting tank.

9. The screening net screens the mineral powder particles, and the speed reducing rod can reduce the moving speed of the mineral powder particles on the screening net and improve the screening effect.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings:

FIG. 1 is a schematic structural view of a fine ore powder granulating apparatus provided by the present invention;

FIG. 2 is a schematic structural view of a heat collecting system provided by the present invention;

FIG. 3 is a sectional view of a treatment chamber according to the present invention;

fig. 4 is a schematic structural diagram of a dispersing assembly provided by the present invention.

Wherein: 100-a micro-fine particle mineral powder granulation device; 110-a filtration system; 130-a heat collection system; 150-a granulation system; 170-a collection system; 190-a processing chamber; 210-a spray assembly; 111-an air extraction assembly; 113-an opening; 115-a baffle; 117-filter screen; 131-a box body; 133-a preheat assembly; 135-a transport assembly; 137-feeding device; 139-sealing means; 141-a fan; 151-a dispersing assembly; 153-metal strips; 155-spin-off tank; 157-comb structure; 159-a holder; 161-telescopic rod; 171-screening mesh; 173-a first holding tank; 175-a second holding tank; 177-sieving holes; 179-deceleration bar; 181-a third power plant; 191-a first rotating plate; 193-second rotating plate; 195-a first power plant; 197-a second power unit; 210-spraying assembly.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 4.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a fine particle ore powder granulation apparatus, and fig. 2 is a schematic structural diagram of a heat collecting system. A fine particle mineral powder granulation device 100 comprises a filtering system 110, a heat collecting system 130, a granulation system 150 and a collecting system 170, wherein the filtering system 110 is provided with a processing cavity 190, the filtering system 110 is communicated with the heat collecting system 130 through the processing cavity 190, the heat collecting system 130 comprises a box body 131, a preheating assembly 133 and a conveying assembly 135, a feeding port (not shown in the figure) is formed in the upper end face of the box body 131, an air outlet (not shown in the figure) is formed in one side, away from the filtering system 110, of the box body 131, the preheating assembly 133 and the conveying assembly 135 are both arranged inside the box body 131, the preheating assembly 133 is connected with the upper end face of the box body 131, a third power device 181 is further arranged on the upper side of the box body 131. The conveying assembly 135 is connected with the lower end face of the box body 131, the heat collecting system 130 is connected with the granulating system 150, the granulating system 150 is provided with a spraying assembly 210, and the spraying assembly 210 is connected with the granulating system 150. The side of the filter system 110 away from the processing chamber 190 is provided with an air extracting assembly 111, the air extracting assembly 111 is used for absorbing air into the filter system 110, the upper end face of the filter system 110 is provided with an opening 113 and a baffle 115, and the baffle 115 is used for opening or closing the opening 113. At least one screen 117 is disposed within the filter system 110, the screen 117 being configured to filter air drawn in by the drafts assembly 111. The filter system 110 is further provided with a track (not shown) slidably connected to the filter screen 117, and the filter screen 117 can be removed from the opening 113 to facilitate cleaning of the filter screen 117. According to the technical scheme, the air entering the micro-fine particle mineral powder granulation equipment 100 is filtered through the filtering system, large-particle dust in the air is reduced, and the purity of mineral powder and the safety of the equipment during working are improved. The air entering the apparatus changes the flow velocity of the air through the processing chamber 190 and enters the heat collecting system 130. An input hole (not shown) is further formed at one side of the tank 131, and the input hole is used for inputting carbon monoxide gas into the tank 131. The feeding port is provided with a feeding device 137, the feeding device 137 is communicated with the box body 131, the feeding device 137 is further provided with a sealing device 139, the sealing device 139 is used for limiting gas in the box body to flow out and increasing the sealing performance of the box body, and the sealing component 139 is a sealing soft belt. The air outlet is provided with a fan 141, and the fan 141 can discharge other redundant gases such as carbon dioxide generated by preheating in the box body out of the box body. At this time, the mineral powder is poured into the box body 131 from the feeding device 137, the mineral powder passes through the sealing device 139 and falls on the conveying assembly 135, the sealing assembly 139 automatically resets, the conveying assembly 135 and the preheating assembly 133 are started, carbon monoxide gas is simultaneously input into the box body 131, the conveying assembly 135 conveys the mineral powder to pass through the lower part of the preheating assembly 133 to heat the mineral powder, the mineral powder is reflected by the carbon monoxide gas and air, and redundant carbon monoxide gas and carbon dioxide gas generated by heating in the box body 131 are discharged out of the box body 131 through the gas outlet. The ore fines, which are well reflected, are transported to the pelletizing system 150 by the conveyor assembly 135, and the pelletizing system 150 sprays the ore fines with a polymeric binder through the spray assembly 210, binds the ore fines, and collects the ore fines particles by the collection system 170. So far, the granulation of the mineral powder is completed. By introducing air and carbon monoxide gas into the heat collecting system 130 and then heating the mineral powder through the preheating assembly 133, the mineral powder is fully reacted, so that the volume of the mineral powder is increased and a porous structure is formed. It should be noted that, in order to ensure that the ore powder can be sufficiently reflected, the temperature of the preheating assembly 133 should be kept between 500 ℃ and 850 ℃.

Referring to fig. 3, fig. 3 is a sectional view of the processing chamber. At least one first rotating plate 191 and at least one second rotating plate 193 are arranged inside the processing cavity 190, the first rotating plate 191 and the second rotating plate 193 are both rotatably connected with the processing cavity 190, a first power device 195 and a second power device 197 are arranged on the outer wall of the processing cavity 190, the first power device 195 is used for controlling the rotation of the first rotating plate 191, and the second power device 197 is used for controlling the rotation of the second rotating plate 193. The first rotating plate 191 is rotatably connected with the left side surface and the right side surface of the processing cavity 190 through pin shafts (not marked in the figure), the first power device 195 is arranged on the outer side surface of the processing cavity 190, and the first power device 195 is connected with the first rotating plate 191 through the pin shafts and drives the first rotating plate 193 to rotate through the pin shafts; the second rotating plate 193 is rotatably connected to the upper and lower surfaces of the process chamber 190 by pins, the second power unit 197 is disposed on the upper end surface of the process chamber 190, and the second power unit 197 is connected to the second rotating plate 193 by pins. In the present embodiment, two first rotating plates 191 and two second rotating plates 193 are used, and in other embodiments, other numbers of rotating plates can be provided, and the number of power devices and rotating plates is the same, that is, one power device controls one rotating plate. The size of the included angle between the first rotating plate 191 and the second rotating plate 193 and the inner wall of the processing cavity 190 is adjusted, so that the concentration of the airflow is further improved, and the reaction efficiency of the mineral powder in the heat collecting system 130 is improved.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a dispersing assembly. The pelletizing system 150 is provided with a dispersion assembly 151, and the heat collecting system 130 is connected with the pelletizing system 150 through the dispersion assembly 151. The dispersion assembly 151 can uniformly drop the preheated ore powder into the collection system 170. The dispersing component 151 is internally provided with at least two groups of metal strips 153 which are uniformly distributed, and the two groups of metal strips 153 are distributed in a crossed manner and leave a space for mineral powder to pass through. The conveying assembly 135 conveys the fully reflected mineral powder to the upper part of the dispersing assembly 151, the mineral powder is separated from the conveying assembly 135, falls under the self gravity and collides with the metal strip 153 to change the original falling track, so that the mineral powder can uniformly fall, and the mineral powder is prevented from being accumulated after falling; meanwhile, the mineral powder is agglomerated after the reaction in the heat collecting system 130, and during the collision of the mineral powder with the metal strip 153, the mineral powder agglomerates with a larger volume are broken down to form single mineral powder particles or mineral powder agglomerates with a smaller volume.

Please refer to fig. 1 again. The granulating system 150 comprises a spin-off groove 155, a comb structure 157 and a fixing frame 159, the comb structure 157 and the spin-off groove 155 are connected through the fixing frame 159, the comb structure 157 is provided with a notch, and the maximum diameter of the notch is not more than 5 mm. The rotation of the comb structure 157 enables the agglomerated ore dust particles to be separated by carding. The mineral powder particles are evenly distributed in the whirl-off grooves 155 through the collision with the metal strips 153, the whirl-off grooves 155 are connected with the collecting system 170, and the horizontal height of one end of the whirl-off grooves 155 close to the collecting system 170 is lower than that of one end of the whirl-off grooves far away from the collecting system 170. The mineral powder particles fall at the higher end of the spin-off groove 155 and roll to the lower end of the spin-off groove 155 under the influence of gravity, at this time, the spraying assembly 210 uniformly sprays the high-molecular adhesive on the surfaces of the mineral powder particles, and meanwhile, the comb tooth structure 157 rotates, so that the mineral powder particles are divided into particles with the volume of 2-5mm when passing through the comb tooth structure 157. An expansion link 161 is further arranged between the comb tooth structure 157 and the fixing frame 159, the expansion link 161 can change the distance between the comb tooth structure 157 and the screwing-off groove 155, and workers can adjust the distance between the comb tooth structure 157 and the screwing-off groove 155 according to the amount of mineral powder in the screwing-off groove 155, so that the working efficiency is improved.

The collection system 170 includes a screen 171, a first collection tank 173 and a second collection tank 175, the first collection tank 173 being mounted at an end of the screen 171 remote from the spin-off tank 151, and the second collection tank 175 being disposed directly below the screen 171. Screening net 171 is provided with screening hole 177 and speed reduction stick 179, and the diameter of screening hole 177 is 2 ~ 5mm, and speed reduction stick 179 and screening hole 177 interval install in the bottom of screening net 171, and the length direction of speed reduction stick 179 is parallel with screening net 171 width direction. The collection system 170 can sieve and sort the ore powder particles, with the non-conforming ore powder particles entering the first collection chute 173 and the conforming ore powder particles entering the second collection chute 175. The speed reducing rods 179 can reduce the moving speed of the mineral powder particles on the sieving net 171, and improve the sieving effect. After the mineral powder particles enter the sieving mesh 171 from the cyclone 155, the mineral powder particles with a diameter of 2-5mm will pass through the sieving holes 177 and fall into the second collecting groove 175; the ore dust particles with a diameter of more than 5mm roll into a first collection trough 173 connected to the screen 171, which facilitates the re-granulation operation.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims

1. The fine particle mineral powder granulating equipment is characterized by comprising a filtering system (110), a heat collecting system (130), a granulating system (150) and a collecting system (170), wherein the filtering system (110) is provided with a processing cavity (190), the filtering system (110) is communicated with the heat collecting system (130) through the processing cavity (190), the heat collecting system (130) comprises a box body (131), a preheating component (133) and a conveying component (135), a feeding hole is formed in the upper end face of the box body (131), an air outlet is formed in one side, away from the filtering system (110), of the box body (131), the preheating component (133) and the conveying component (135) are both arranged inside the box body (131), the heat collecting system (130) is connected with the granulating system (150), the granulating system (150) is provided with a spraying component (210), the spray assembly (210) is coupled to the pelletizing system (150).

2. The fine particle ore powder granulation equipment as claimed in claim 1, wherein an air draft assembly (111) is arranged on a side of the filtering system (110) far away from the processing chamber (190), the air draft assembly (111) is used for sucking air into the filtering system (110), an opening (113) and a baffle (115) are arranged on the upper end face of the filtering system (110), the baffle (115) is used for opening or closing the opening (113), at least one filter screen (117) is arranged inside the filtering system (110), and the filter screen (117) is used for filtering the air sucked by the air draft assembly (111).

3. The fine particle ore powder granulation equipment as claimed in claim 2, wherein at least one first rotating plate (191) and at least one second rotating plate (193) are arranged inside the processing chamber (190), the first rotating plate (191) and the second rotating plate (193) are both rotatably connected with the processing chamber (190), a first power device (195) and a second power device (197) are arranged on the outer wall of the processing chamber (190), the first power device (195) is used for controlling the rotation of the first rotating plate (191), and the second power device (197) is used for controlling the rotation of the second rotating plate (193).

4. The fine particle ore powder granulation equipment as claimed in claim 3, wherein the feeding port is provided with a feeding device (137), the feeding device (137) is communicated with the box body (131), the feeding device (137) is further provided with a sealing device (139), and the sealing device (139) is used for limiting gas in the box body (131) to flow out.

5. The fine particle ore powder granulation apparatus as claimed in claim 4, wherein said air outlet is provided with a fan (141), and said fan (141) is used for pumping out air in said box body (131).

6. The fine particle ore powder granulation apparatus as claimed in claim 5, wherein said granulation system (150) is provided with a dispersion assembly (151), and said heat collection system (130) is connected to said granulation system (150) through said dispersion assembly (151).

7. The fine particle ore powder granulation equipment as claimed in claim 6, wherein the granulation system (150) comprises a spin-off tank (155), a comb structure (157) and a fixed frame (159), the comb structure (157) is connected with the spin-off tank (155) through the fixed frame (159), the comb structure (157) is provided with at least one notch, the spin-off tank (155) is connected with the collection system (170), and the horizontal height of the end of the spin-off tank (155) close to the collection system (170) is lower than the horizontal height of the end of the spin-off tank (155) far away from the collection system (170).

8. The fine ore powder granulation apparatus as claimed in claim 7, wherein said collection system (170) comprises a sieving mesh (171), a first collection tank (173) and a second collection tank (175), said first collection tank (173) being mounted at an end of said sieving mesh (171) remote from said spin-off tank (155), said second collection tank (175) being disposed directly below said sieving mesh (171).

9. The fine particle ore powder granulation equipment as claimed in claim 8, wherein the sieving mesh (171) is provided with sieving holes (177) and deceleration rods (179), the diameter of the sieving holes (177) is 2-5mm, the deceleration rods (179) and the sieving holes (177) are installed at the bottom of the sieving mesh (171) at intervals, and the length direction of the deceleration rods (179) is parallel to the width direction of the sieving mesh (171).