TW202020169A - Desulfurization slag recycling treatment system for separating graphite materials - Google Patents

Abstract

A desulfurization slag recycling treatment system for separating graphite materials is aimed at treating magnetically selected desulfurization slag which contains graphite. It takes an advantage of the property of hydrodynamic flow to separate and collect the desulfurization slag with different particle sizes. The desulfurization slag with larger particle size is collected directly after sedimentation. Further, a high oxygen generator is applied to treat the separated desulfurization slag with smaller particle size by injecting oxygen in order that the oxygen collides with water and desulfurization slag to form a plurality of bubbles which allow the graphite materials to adhere thereto, thereby advantaging recycling the desulfurization slag. Hence, the recycling treatment process is executed continuously. Meanwhile, treating mass desulfurization slag can reduce the treatment process and cost greatly, achieve the preferable mobility, and increase the economic value of wastes recovery effectively.

Description

Resource treatment system for desulfurization slag to remove graphite sequins and other substances

The invention relates to the design of a resource processing system, in particular to a resource processing system for desulfurization slag to remove graphite sequins and other substances.

Check, the desulfurization slag is a by-product of the consistent operation of the steelmaking plant, which is the solid formed after the blast furnace molten iron is cooled by desulfurization. Although it is the scrap after steelmaking, the desulfurization slag contains The composition of the desulfurization slag still has the value of reuse, and the main crystal phase of the desulfurization slag is α-iron, graphite, calcium hydroxide, calcium silicate, hematite, magnetite, etc., wherein the content of the calcium silicate is about It accounts for half of the total desulfurization slag, and the total iron content is about 30%~40%, and the graphite content is about 3%~4%. Therefore, when a large amount of the desulfurization slag is magnetically separated and a large amount of iron components are recovered Re-used as iron-making raw materials, the utilization value of the desulfurized slag after magnetic separation is less than the recovery of iron components, that is, it will be piled up as waste on empty ground or buried, which is not only unrealistic, but also It is less economical, and because when a large amount of these desulfurized slag piles after magnetic separation are placed in an empty mine site, under the exposure of time, the ink sequins mixed with them and having light weight characteristics will follow the wind Flying and polluting the air, if it is carried out by burying, other substances in the desulfurization slag will also pollute the groundwater source and the soil of the burial site in the long run, although many companies have aimed at reducing industrial waste and recycling Reuse for research and development, but it still cannot be effectively and quickly carried out in large quantities, and it still needs to be improved. Therefore, in order to effectively improve the problems caused by the desulfurization slag mentioned above, and it also has the economic benefits of rapid treatment, so there is the invention R&D.

Therefore, the purpose of the present invention is to provide a desulfurization slag to remove graphite sequins and other substances in a resource processing system, which can quickly sort out a large number of different particle sizes, and can effectively remove harmful substances to reduce environmental pollution , Greatly improve the efficiency of resource processing.

Therefore, the resource processing system of the desulfurization slag of the present invention for removing graphite sequins and other materials includes a feeding device, a hydrocyclone sorting device, a sorting collection device and a gas generating device; wherein, through the hydrocyclone The separation device can carry out the hydrocyclone sorting operation for the desulfurization picks, that is, the mixer of the hydrocyclone sorting device is first used to mix the desulfurized slag and water in a stirring manner, and then the hydrocyclone sorting device The separator takes over the desulfurized slag mixed with water mentioned above, and adopts the hydrodynamic vortex method to separate the desulfurized slag with different sizes and diameters in the vortex flow during the settlement and light floatation of the hydrocyclone Sulfur slag is collected by the first aggregate part and the second aggregate part of the sorting and collecting device respectively for the desulfurized slag of the size and particle size after sorting, and the gas generating device is installed in the second On the side of the aggregate part, a high-oxygen gas is injected into the second aggregate part through the gas generating device for the desulfurized slag collected in the small diameter, so that the desulfurized slag and water are When the gas is injected, they will collide with each other and form a plurality of bubbles, and then the time ink sequins on the desulfurization slag will fall off and adhere to the bubbles due to the impact. In this way, the hydraulic vortex through the resource treatment system Separation and the consistent processing flow of flotation generated by the impact of bubbles can effectively and effectively separate the size and particle size of these desulfurized slags and the separation of graphite sequins, and at the same time can be processed in large quantities to be effective Shortening the treatment time, not only has the flexibility, but also greatly reduces the treatment cost, so as to achieve the effective economic value of waste recycling.

FIG. 1 is a schematic diagram of a preferred embodiment of the present invention. Fig. 2 is a schematic diagram of partial components of the preferred embodiment. Fig. 3 and Fig. 4 are analysis diagrams of particle size ranges of desulfurized slag separated by large and small particle sizes by the hydrocyclone sorting device of the preferred embodiment. FIG. 5 is a photographic diagram of the bubble coating state of the gas generating device of the preferred embodiment.

The foregoing and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings.

Referring to FIG. 1, a preferred embodiment of the present invention, the desulfurization slag resource treatment system for removing graphite sequins and other materials includes a feeding device 31, a hydrocyclone sorting device 32, and a sorting and collecting device 33 And a gas generating device 34; wherein, the feeding device collects a plurality of desulfurized slags produced after steelmaking, and the desulfurized slags are pellets with different shapes and sizes after magnetic separation. The desulfurization slag has the characteristics of multi-powder graphite sequins and other impurities. Therefore, the desulfurization slag has been magnetically separated beforehand, so the iron content in the desulfurization slag has been greatly reduced to a minimum.

Please refer to FIG. 2 and continue as described above, and the hydrocyclone sorting device 32 has a mixer 321 and a separator 322 connected to the mixer 321; wherein, the mixer 321 has a container 3211, and one extends into the container Actuator 3212 in 3211, and a conveying pipe 3213 provided at the bottom of the container 3211 for connecting to the separator 322, and the aforementioned container 3211 can be used for the desulfurization slag collected by the feeding device 31 Placed in batches, at the same time, the appropriate amount of water is built into the container 3211, and the desulfurization slag and water are mixed through the stirring of the actuator 3212, and at the same time during the operation of the actuator 3212, it can be timely A gas (not shown) is input into the container 3211, and a pressure is formed in the container 3211 by using the input of the gas, so that the desulfurized slag mixed with water passes through the delivery pipe under the influence of the pressure 3213 is conveyed to the separator 322; in addition, the separator 322 has a tapered body 3221 with an upper width and a narrow width and an accommodating space 3222 defined therein, and a tapered body 3221 provided on the tapered body 3221 and connected to the conveying tube 3213 is connected to an inlet 3223, a collecting tube 3224 disposed above the tapered body 3221 and extending into the tapered body 3221 at one end, and a receiving portion 3225 provided below the tapered body 3221, and The inlet 3223 accepts the desulfurized slag and water input from the delivery pipe 3213 to the accommodating space 3222, and upon entering, it follows the special shape of the tapered body 3221 to enable the desulfurization mixed with water The slag enters into a high-speed vortex flow phenomenon, so that the large and small particle size in the desulfurized slag is due to the centrifugal force of the high-speed vortex flow during the vortex flow, forming a separation effect of settling light separation, so that the large particle size The sulfur slag settles to the receiving portion 3225, and the desulfurized slag with a small particle diameter enters the collecting pipe 3224 with the centrifugal force.

As for the sorting and collecting device 33, each has a first collecting part 331 and a second collecting part 332, and the first collecting part 331 is connected to the receiving part 3225 to collect and collect the receiving part The desulfurized slag with a large particle size output by 3225, and the second aggregate part 332 is connected to the collecting pipe 3224 for the small-sized desulfurized slag and water output by the collecting pipe 3224 Connected to the inside, at the same time, the arrangement of the first and second collecting parts 331 and 332 can be based on the user's installation type, which is a fixed tank or a mobile container with a specific volume. Finally, the gas generating device 34 is provided on one side of the second aggregate portion 332, and the gas generating device 34 has a high oxygen generator 341, and one and two ends are respectively with the high oxygen generator 341, the second A guide tube 342 connected to the collecting part 332, the high oxygen generator 341 can generate a gas with a high degree of oxygen to enter the second collecting part 332 through the guide of the guide tube 342, so that when the gas enters The desulfurization slag of water and small particle size produces high-speed impact to form a plurality of bubbles, so that the desulfurization slag of small particle size is like another sorting state.

Referring to FIGS. 1 to 2, during processing, the desulfurized slag that has undergone magnetic separation is collected and placed in the container 3211 of the mixer 321 in batches, corresponding to the weight of the desulfurized slag Put in a relative proportion of water, and then start the operation of the actuator 3212 to start the mixing stroke in the container 3211, and use the actuator 3212 to continuously stir in the container 3211 to produce the desulfurization slag and water Fully mixed, at the same time, a gas (not shown) can be input into the container 3211 during the stirring process. The addition of the gas is used to increase the pressure in the container 3211, so that the desulfurized slag and water mixed are borrowed With the help of gas pressure, it flows into the tapered body 3221 through the conveying pipe 3214. Under the pressure of the gas, it will enter the accommodating space 3222 at a high flow rate. At this time, desulfurization such as mixing with water When the slag enters the conical body 3221, it will be influenced by the special design of the upper and lower width of the conical body 3221, so that the desulfurized slag and water will generate a strong high-speed vortex after entering At the same time, following the design of the tapered body 3221 under the action of high flow velocity, a hydraulic swirling effect with centrifugal force is further formed. By the double action of the centrifugal force of the hydraulic swirling flow and the high flow velocity, the sinking and falling force is formed. Furthermore, the large and small particles in the desulfurization slag are distinguished by the effect of hydraulic swirling, that is, the desulfurization slag with large and small particle sizes is formed by the influence of the speed of the hydraulic swirling, that is, the desulfurization The large particle size and heavy sediment in the slag will settle to the bottom of the cone-shaped body 3221. Please refer to Figure 3 for the analysis of the particle size range of the large particle size desulfurized slag selected by the hydrocyclone. The desulfurized slag with a small particle size and the graphite sequins and powders attached to it will flow to the collecting pipe 3224 with the upward direction of the hydraulic vortex because of their light weight. As shown in the analysis diagram of the particle size range of the small particle size desulfurization slag, the settled large particle size deflux slag is output through the receiving part 3225, and is collected by the first collecting part 331, while considering the large particle size The desulfurized slag has no metal-containing substances, so it can be directly and effectively used after being sorted out by the hydrocyclone.

Continuing the foregoing, as for the small particle size desulfurization slag, light weight, etc. flowing to the output pipe 3224, it will be output through the output pipe 3224 under the action of the hydraulic vortex, and then the output The second collecting part 332 connected by the tube 3224 will be directly accepted. When the desulfurization slag and light-weight substances with small particle diameters enter the second collecting part 332, the high oxygen generating machine 341 will then A gas with a high degree of oxygen is generated, which is introduced into the second collecting part 332 through the guide tube 342, and when the gas is input, it will collide with the desulfurization slag, water, etc., so that The graphite sequins originally attached to the desulfurization slag will separate and float on the water surface during the impact, and the gas will form numerous bubbles floating on the water surface due to the impact, and will flow out with the desulfurization slag. The multiple powders and graphite sequins of light weight objects are encapsulated in these bubbles, as shown in the actual photo of FIG. 5, at this time, a removal tool (not shown) can be used to remove these bubbles. In order to make the graphite light flakes and other light weight materials fully collected, the graphite sequins can be used as graphite raw materials after collection and purification treatment, or used in other beneficial applications, so that the graphite sequins will not only be collected It is only a hazardous substance, it can still be recycled and reused, and finally, the desulfurized slag of small particle size after being completely separated from the graphite sequins will be concentrated in the second collection part 332, so it will be coated After the bubbles with graphite sequins are removed, the desulfurization slag of small particle size can be collected, so that the desulfurization slag of small particle size can be used in other fields after collection; Therefore, in the processing flow of the present invention, the hydraulic cyclone sorting device 32 is initially used to firstly mix the desulfurized slag and water that are put in a large amount, so that the different particle sizes of the desulfurized slag are separated and screened. It can be carried out in a short period of time in a coherent operation. At the same time, after sorting, the floatation operation of the graphite sequins is covered by the injection of gas to form bubbles with the cooperation of the gas generating device. Separately screen out the desulfurization slag and graphite sequins independently for subsequent processing, which not only has the flexibility, but also greatly reduces the processing cost, so as to achieve the effective economy of waste recycling Increase in value.

In summary, the resource processing system of the desulfurization slag of the present invention for removing graphite sequins and other materials has a consistent processing flow through a feeding device, a hydrocyclone sorting device, a sorting and collecting device and a gas generating device, etc. The implementation of the method can not only effectively separate the size and particle size of the desulfurization slag from the graphite sequins, but also have the mobility, which can effectively reduce the processing cost and greatly improve the steelmaking. The waste resources have the benefit of valuable reuse, so it can indeed achieve the purpose of the present invention.

However, the above are only illustrative of the preferred embodiments of the present invention, but the scope of the implementation of the present invention cannot be limited by this, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the description of the invention , Should still fall within the scope of this invention patent.

(Invention) 3: Resource treatment system for desulfurization slag to remove materials such as graphite sequins 34: feeding device 35: hydrocyclone sorting device 36: collection device 34: gas generating device 321: mixer 3211: container 3212: Actuator 3213: Conveying pipe 322: Separator 3221: Cone-shaped body 3222: Storage space 3223: Inlet 3224: Collecting pipe 3225: Accepting part 331: First collecting part 332: Second collecting part 341: High oxygen Generator 342: guide tube

3: Resource treatment system for desulfurization slag to remove graphite sequins and other substances

31: Feeding device

32: Hydrocyclone sorting device

33: Collecting device

34: Gas generating device

321: Blender

322: Separator

331: The first collection department

332: Second Collection Department

341: High oxygen generator

Claims (2)

A desulfurization slag is a resource treatment system for removing graphite sequins and other substances, which is processed for the desulfurization slag generated in the iron and steel refining process. The resource treatment system includes a feed device and a hydrocyclone sorting device. A sorting and collecting device and a gas generating device; wherein, the feeding device collects and collects desulfurized slag generated after steel-making process, and the desulfurized slag is large and small particles after magnetic separation, and the desulfurization The sulfur slag has the characteristics of multi-powder graphite sequins and other debris; in addition, the hydraulic cyclone sorting device has a mixer and a separator, and the aforesaid mixer contains water and is available for batching of the desulfurized slag Put it in order to mix the desulfurized slag with water by agitation, and the separator is carried out by a hydrocyclone method to accept the aforementioned desulfurized slag mixed with water. Wait for the desulfurization slag to settle in the flotation of the hydrocyclone to separate the desulfurization slag of different sizes and particle sizes; as for the separation and collection device is connected to the hydrocyclone separation device, and for the separation The desulfurized slag of the next size and particle size is collected, and the sorting and collecting device has a first collecting part and a second collecting part respectively, so that the first collecting part can deal with the large particle size after separation The desulfurization slag is collected, and the second aggregate part is provided with water, and the second aggregate part can receive the desulfurization slag with light weight and small particle size for separation and collection; finally, the gas is generated The device is provided on the side of the second aggregate part, which has a hyperoxic generator, and a guide tube connected to the hyperoxic generator and the second aggregate part at two ends respectively, the gas generator can generate The gas with a high oxygen content enters the second aggregate part through the guide tube, so that the light-weight debris on the desulfurization slag, graphite sequins and other debris adhere to the gas and are removed. A resource processing system for removing graphite sequins and other substances according to the desulfurization slag described in item 1 of the patent application scope, wherein the mixer has a container, an actuator extending into the container, and a device provided at the bottom of the container A conveyor tube connected to the separator; in addition, the separator has a tapered body with an upper width and a narrower inside and a receiving space defined therein, and an inlet provided on the tapered body and connected to the conveyor tube , A collecting tube provided above the tapered body and one end extending into the tapered body, and a receiving part provided under the tapered body, and the aforementioned container can be used for desulfurization slag mixed with water to enter , So that the collecting tube can collect desulfurization slag particles with lighter and smaller particle size, and the receiving part can accept desulfurization slag with larger particle size.

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