Zinc-containing smoke treatment method and device and storage medium

Abstract

The invention belongs to the field of solid waste treatment, and relates to a zinc-containing smoke dust treatment method and device and a storage medium, and the method comprises the following steps: preparing a zinc-containing smoke dust treatment raw material; obtaining component characteristic data of the raw materials; obtaining physical characteristic data of the raw materials; conveying the raw materials to a raw material bin; pretreating the raw materials in the raw material bin; and conveying the raw materials into a rotary kiln for treatment reaction. According to the zinc-containing smoke dust treatment method and device and the storage medium, the process problems of high investment, ring formation and the like of a traditional rotary kiln can be effectively solved, zinc is separated and extracted by utilizing different boiling points of all components, calcined high-grade metal balls can be directly added into a hot-metal ladle and a torpedo ladle for use and can be used as waste steel after being subjected to hot melting and briquetting, high-temperature smoke gas is repeatedly utilized, and the production cost is reduced. And the energy consumption is reduced to the minimum.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment, and in particular to a method, device and storage medium for treating zinc-containing smoke. Background Art

[0002] A large amount of smoke and dust is generated during the steelmaking process, with the amount generated per ton of steel being about 12 to 20 kg. The smoke and dust contains a lot of Fe, Zn, Na, and K. A large amount of smoke and dust will cause very bad environmental pollution and affect people's health. How to turn waste into treasure has become a core issue facing steel companies.

[0003] In the steel production system, Zn, Na, and K are initially derived from scrap steel and iron ore raw materials. Although the content of zinc in iron ore is extremely low, it will continue to accumulate in the system due to the cyclic enrichment characteristics of zinc. At present, the popular treatment methods used by steel companies are cold pressing process, rotary kiln, rotary hearth furnace, small blast furnace, and melting furnace process. The cold pressing process has a limited processing capacity due to high harmful elements and restrictions on added varieties; the rotary hearth furnace is limited by high investment and high energy consumption; the melting furnace is strictly limited by raw material requirements.

[0004] At present, the most commonly used method for treating zinc-containing smoke is the rotary kiln. The rotary kiln has low investment and operating costs, simple process, can effectively remove Na and K, and can recover Zn, but it is easy to form rings in the kiln, which leads to limited operation. Summary of the invention

[0005] In view of this, the present invention provides a method, device and storage medium for treating zinc-containing smoke.

[0006] Specifically, the present invention is achieved through the following technical solutions:

[0007] According to a first aspect of the present invention, there is provided a method for treating zinc-containing smoke, the method comprising the steps of:

[0008] Prepare zinc-containing fume treatment raw materials;

[0009] Acquiring component characteristic data of the raw material;

[0010] Acquiring physical characteristic data of the raw material;

[0011] conveying the raw materials to a raw material bin;

[0012] Pre-treating the raw materials in the raw material bin;

[0013] The raw materials are transported to a rotary kiln for treatment reaction.

[0014] Optionally, the step of obtaining the component characteristic data of the raw material comprises the steps of:

[0015] Obtaining composition characteristic data of blast furnace ash;

[0016] Obtain composition characteristic data of converter ash.

[0017] Optionally, the step of obtaining the physical characteristic data of the raw material comprises the steps of:

[0018] Obtain physical characteristic data of blast furnace ash;

[0019] Obtain physical characteristic data of converter ash;

[0020] Obtain physical characteristic data of blast furnace ash and converter ash at preset mixing ratios.

[0021] Optionally, the step of obtaining the physical characteristic data of blast furnace ash comprises the following steps:

[0022] Obtaining the particle size of blast furnace ash;

[0023] Obtaining the softening temperature of blast furnace ash;

[0024] Get the hemispherical temperature of blast furnace ash;

[0025] Obtain the flow temperature of blast furnace ash.

[0026] Optionally, the step of obtaining physical characteristic data of converter ash comprises the following steps:

[0027] Obtaining the particle size of converter ash;

[0028] Obtaining the softening temperature of converter ash;

[0029] Obtain the hemispherical temperature of converter ash;

[0030] Obtain the flow temperature of converter ash.

[0031] Optionally, the step of obtaining the physical characteristic data of blast furnace ash and converter ash at a preset mixing ratio comprises the following steps:

[0032] Obtaining the softening temperature of blast furnace ash and converter ash at a preset mixing ratio;

[0033] Obtain the hemispherical temperature of blast furnace ash and converter ash at a preset mixing ratio;

[0034] Obtain the flow temperature of blast furnace ash and converter ash at a preset mixing ratio.

[0035] Optionally, the pre-processing of the raw materials in the raw material bin comprises the steps of:

[0036] Mix the ingredients in the raw materials according to a preset ratio;

[0037] The raw material is subjected to wheel milling treatment;

[0038] Compacting the raw materials and making them into finished products;

[0039] The finished product is screened.

[0040] According to a second aspect of the present invention, there is provided a zinc-containing fume treatment device, comprising:

[0041] Raw material preparation module, used to prepare zinc-containing fume treatment raw materials;

[0042] A component acquisition module, used to acquire component characteristic data of the raw material;

[0043] A physical acquisition module, used to acquire physical characteristic data of the raw material;

[0044] A raw material conveying module, used for conveying the raw materials to the raw material bin;

[0045] A raw material processing module, used for pre-processing the raw materials in the raw material bin;

[0046] The raw material reaction module is used to transport the raw materials to the rotary kiln for processing and reaction.

[0047] According to a third aspect of the present invention, there is provided an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the aforementioned methods when executing the program.

[0048] According to a fourth aspect of the present invention, there is provided a storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the steps of any one of the aforementioned methods.

[0049] The technical solution provided by the present invention brings at least the following beneficial effects:

[0050] The present application provides a method, device and storage medium for treating zinc-containing smoke, which can effectively solve the process problems of high investment and ring formation in traditional rotary kilns. The zinc can be separated and extracted by utilizing the different boiling points of the components. The high-grade metal balls after calcination can be directly added to molten iron tanks and torpedo tanks for use, and can be used as scrap steel after hot-melt briquettes. The high-temperature smoke can be reused, and the energy consumption is reduced to a minimum. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0053] Figure 1 A schematic flow chart of a method for treating zinc-containing smoke provided by an embodiment of the present invention;

[0054] Figure 2 A schematic structural diagram of a zinc-containing fume treatment device provided in an embodiment of the present invention;

[0055] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention;

[0056] Figure 4 A schematic diagram of the structure of a storage medium provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] Figure 1 A schematic flow chart of a method for treating zinc-containing smoke applicable to an embodiment of the present invention is shown schematically.

[0059] See also Figure 1 The embodiment of the present invention provides a method for treating zinc-containing smoke, which can be applied to electronic devices such as PCs, servers, terminals, etc. The method may include the following steps:

[0060] S1: preparing zinc-containing fume treatment raw materials;

[0061] In the examples of the present application, the blast furnace bag dust removal ash and converter ash used are both sourced from a steel company in Changzhi, and their chemical compositions are shown in the following table.

[0062]

[0063] S2: Obtaining component characteristic data of the raw material;

[0064] Exemplarily, the step of obtaining the component characteristic data of the raw material comprises the following steps:

[0065] Obtaining composition characteristic data of blast furnace ash;

[0066] Obtain composition characteristic data of converter ash.

[0067] In the examples of the present application, the contents of TFe and FeO in the above table are determined by potassium dichromate titration, and the other main components are determined by ICP-AES. The total iron content of blast furnace ash is relatively low, with FeO accounting for only 0.5%, and the contents of Fe2O3 and FeO are 51.48%, among which the contents of K, Na, Zn, and C are very high; the total iron content of converter ash is relatively high, with the contents of Fe2O3 and FeO exceeding 80%, and it has a very high utilization value. The Zn and alkali metal substances in blast furnace ash are far higher than the requirements of ironmaking raw materials of steel enterprises, so harmful impurities must be removed and valuable elements must be separated to meet the requirements of steel production. The elements in blast furnace dust exist in the form of compounds, and the composition is relatively complex. Iron mainly exists in the form of Fe2O3, and zinc mainly exists in the form of ZnS, ZnO and ZnFe2O4. When the temperature exceeds 700°C, ZnFe2O4 will decompose into ZnO and Fe2O3 in a reducing atmosphere. Mg exists in the form of MgSiO3 and MgFe2O4, potassium exists in the form of KCl, and sodium exists in the form of sulfate and a small amount of NaClO3. NaClO3 will decompose into NaCl when heated. The iron in converter dust mainly exists in the form of Fe and Fe2O3, Zn mainly exists in the form of ZnFe2O4, and Ca mainly exists in the form of Ca2SiO4. Compared with blast furnace ash, the components of converter ash are obviously simpler than those of blast furnace ash, mainly iron and iron oxides.

[0068] S3: Acquire physical characteristic data of the raw material;

[0069] Exemplarily, the step of obtaining the physical characteristic data of the raw material comprises the following steps:

[0070] Obtain physical characteristic data of blast furnace ash;

[0071] Obtain physical characteristic data of converter ash;

[0072] Obtain physical characteristic data of blast furnace ash and converter ash at preset mixing ratios.

[0073] In an embodiment of the present application, a detection device is used to respectively detect the physical characteristic data of blast furnace ash and converter ash, and the blast furnace ash and converter ash are mixed according to a preset ratio, so as to obtain the physical characteristic data of the blast furnace ash and converter ash at a preset mixing ratio.

[0074] Exemplarily, the step of obtaining the physical characteristic data of blast furnace ash includes the following steps:

[0075] Obtaining the particle size of blast furnace ash;

[0076] Obtaining the softening temperature of blast furnace ash;

[0077] Get the hemispherical temperature of blast furnace ash;

[0078] Obtain the flow temperature of blast furnace ash.

[0079] In the embodiments of the present application, a particle size detection instrument is used to detect the particle size of blast furnace ash, a heating device is used to heat the blast furnace ash, and the state of the blast furnace ash is observed, so that the temperature of the blast furnace ash in different states can be obtained.

[0080] Exemplarily, the step of obtaining physical characteristic data of converter ash includes the following steps:

[0081] Obtaining the particle size of converter ash;

[0082] Obtaining the softening temperature of converter ash;

[0083] Obtain the hemispherical temperature of converter ash;

[0084] Obtain the flow temperature of converter ash.

[0085] In the embodiments of the present application, a particle size detection instrument is used to detect the particle size of the converter ash, a heating device is used to heat the converter ash, and the state of the converter ash is observed, so that the temperature of the converter ash in different states can be obtained.

[0086] Exemplarily, the step of obtaining the physical characteristic data of blast furnace ash and converter ash at a preset mixing ratio includes the following steps:

[0087] Obtaining the softening temperature of blast furnace ash and converter ash at a preset mixing ratio;

[0088] Obtain the hemispherical temperature of blast furnace ash and converter ash at a preset mixing ratio;

[0089] Obtain the flow temperature of blast furnace ash and converter ash at a preset mixing ratio.

[0090] In an embodiment of the present application, blast furnace ash and converter ash are mixed according to a preset ratio, the mixture is heated using a heating device, and the state of the mixture is observed, so that the temperature of the mixture in different states can be obtained.

[0091] Specifically, the particle size analysis of the raw materials is as follows:

[0092]

[0093] Specifically, the ash melting points of different proportions of raw materials are shown below:

[0094]

[0095] When the ratio of blast furnace ash to converter ash is 7:3, converter ash and blast furnace ash need to consume 8.74% carbon, while the carbon they themselves contain is 10%. Under this ratio, the carbon consumption and carbon content of the two types of ashes are not much different. Therefore, the ratio of blast furnace ash to converter ash is selected to be 7:3. At this time, the melting point is also higher and no additional carbon is required.

[0096] Specifically, the ingredients list of cold pressed balls is as follows:

[0097]

[0098] Specifically, the ingredients of the cold pressed balls are as follows:

[0099]

[0100] S4: transporting the raw materials to the raw material warehouse;

[0101] In the embodiment of the present application, blast furnace ash and converter ash are both transported into the raw material bin by trucks, and the binder is transported into the raw material bin by adding it in ton bags.

[0102] S5: pre-treating the raw materials in the raw material bin;

[0103] Exemplarily, the pre-processing of the raw materials in the raw material bin comprises the steps of:

[0104] Mix the ingredients in the raw materials according to a preset ratio;

[0105] The raw material is subjected to wheel milling treatment;

[0106] Compacting the raw materials and making them into finished products;

[0107] The finished product is screened.

[0108] In the embodiment of the present application, all ingredients such as blast furnace ash and converter ash are fed into the feeding belt conveyor according to a certain ratio through the weighing belt under the raw material bin, and then fed into the distributor by the feeding belt conveyor. The distributor feeds the mixed material into the mixer in proportion, and the mixed material and the binder are fully mixed and stirred in the mixer. After the mixing and grinding is completed, the mixed material is unloaded into the buried scraper conveyor under the mixer to enter the next process. In order to further increase the density of the mixture, the mixture coming out of the mixer is sent to the mixer via a conveyor for compaction to obtain a mixture with a higher density. The compacted material enters the ball press via a conveyor, and the finished balls on the screen enter the finished product bin via a conveyor, and the screened materials return to the ball press, and the cycle repeats until all the solid wastes are pressed into qualified finished products; qualified finished materials (particle size: Ф10mm~Ф12mm elliptical spherical pellets strength: ≥1000N / m 2 ) is sent to the next process via a belt conveyor.

[0109] S6: transporting the raw materials to a rotary kiln for treatment reaction.

[0110] In the embodiment of the present application, the cold pressed balls enter the rotary kiln silo of the high-angle belt conveyor, enter the electromagnetic rotary kiln through the kiln tail chute, and slowly and orderly pass through the preheating zone, calcining zone and cooling zone in the kiln according to the calcination process requirements. The cold solid balls exchange heat with the flue gas in the preheater, and the cold solid balls absorb the heat of the hot exhaust gas to increase the temperature, and pre-decompose. At the same time, the flue gas is cooled by secondary air to less than 500°C, and the steam state zinc is condensed into solid zinc for collection, and then enters the dust collector; calcination adopts electromagnetic heating, and the calcination temperature in the kiln is 1000±50°C. The calcined metal balls are discharged through variable frequency electric vibration, fall on the chain conveyor, and then enter the vibrating screen through the elevator. After screening, the metal balls larger than 10mm enter the finished product warehouse through the belt conveyor, and the screened materials less than 10mm fall into the transition warehouse. The metal balls in the transition warehouse return to the cold pressed ball raw material warehouse through the conveyor. The calcined metal balls are lifted to the multi-frequency screen for screening via a chain conveyor, and those larger than 10 mm are supplied to the molten iron tank and torpedo tank to increase the iron source; the surplus part and metal balls smaller than 10 mm enter the 450-ton press to be made into hot-melt briquettes for use as steelmaking scrap; the flue gas enters the cooler and is cooled by secondary air to below 500°C, condensing the vapor zinc into solid ZnO for collection.

[0111] Specifically, the test chemical composition content table is as follows:

[0112] TFe / % Zn% K％ Na% Metal Ball 86.46 0.082 3.25 2.27

[0113] like Figure 2 The present application provides a zinc-containing smoke treatment device, comprising:

[0114] A raw material preparation module 10 is used to prepare zinc-containing smoke treatment raw materials;

[0115] A component acquisition module 20, used to acquire component characteristic data of the raw material;

[0116] A physical acquisition module 30, used to acquire physical characteristic data of the raw material;

[0117] A raw material conveying module 40, used for conveying the raw materials to the raw material bin;

[0118] A raw material processing module 50, used for pre-processing the raw materials in the raw material bin;

[0119] The raw material reaction module 60 is used to transport the raw materials to the rotary kiln for processing reaction.

[0120] The zinc-containing smoke treatment device provided in the present application can execute the zinc-containing smoke treatment method provided in the above steps.

[0121] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

[0122] Reference below Figure 3 , which shows a schematic diagram of the structure of an electronic device 100 suitable for implementing the embodiment of the present disclosure. The electronic device in the embodiment of the present disclosure may include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle terminals (such as vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0123] like Figure 3 As shown, the electronic device 100 may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 101, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 102 or a program loaded from a storage device 108 to a random access memory (RAM) 103. In the RAM 103, various programs and data required for the operation of the electronic device 100 are also stored. The processing device 101, the ROM 102, and the RAM 103 are connected to each other via a bus 104. An input / output (I / O) interface 105 is also connected to the bus 104.

[0124] Typically, the following devices may be connected to the I / O interface 105: an input device 106 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 107 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 108 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 109. The communication device 109 may allow the electronic device 100 to communicate with other devices wirelessly or by wire to exchange data. Although the electronic device 100 having various devices is shown in the figure, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices may be implemented or have alternatively.

[0125] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device 109, or installed from the storage device 108, or installed from the ROM 102. When the computer program is executed by the processing device 101, the above-mentioned functions defined in the method of the embodiment of the present disclosure are executed.

[0126] Reference below Figure 4 , which shows a structural schematic diagram of a computer-readable storage medium suitable for implementing an embodiment of the present disclosure, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it can implement any of the zinc-containing fume treatment methods described above.

[0127] The present application also provides a computer program product, which includes a computer program / computer executable instructions, and when the computer program / computer executable instructions are executed by a processor of an electronic device, the steps of any of the above-mentioned methods for treating zinc-containing smoke are implemented.

[0128] The present application provides a method, device and storage medium for treating zinc-containing smoke, which can effectively solve the process problems of high investment and ring formation in traditional rotary kilns. The zinc can be separated and extracted by utilizing the different boiling points of the components. The high-grade metal balls after calcination can be directly added to molten iron tanks and torpedo tanks for use, and can be used as scrap steel after hot-melt briquettes. The high-temperature smoke can be reused, and the energy consumption is reduced to a minimum.

[0129] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0130] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for treating zinc-containing smoke, characterized in that: The method comprises the steps of: Prepare zinc-containing fume treatment raw materials; Acquiring component characteristic data of the raw material; Acquiring physical characteristic data of the raw material; conveying the raw materials to a raw material bin; Pre-treating the raw materials in the raw material bin; The raw materials are transported to a rotary kiln for treatment reaction.

2. The method for treating zinc-containing smoke according to claim 1, characterized in that: The step of obtaining the component characteristic data of the raw material comprises the following steps: Obtaining composition characteristic data of blast furnace ash; Obtain composition characteristic data of converter ash.

3. The method for treating zinc-containing smoke according to claim 1, characterized in that: The step of obtaining the physical characteristic data of the raw material comprises the following steps: Obtain physical characteristic data of blast furnace ash; Obtain physical characteristic data of converter ash; Obtain physical characteristic data of blast furnace ash and converter ash at preset mixing ratios.

4. The method for treating zinc-containing smoke according to claim 2, characterized in that: The method of obtaining the physical characteristic data of blast furnace ash comprises the following steps: Obtaining the particle size of blast furnace ash; Obtaining the softening temperature of blast furnace ash; Get the hemispherical temperature of blast furnace ash; Obtain the flow temperature of blast furnace ash.

5. The method for treating zinc-containing smoke according to claim 2, characterized in that: The method of obtaining the physical characteristic data of converter ash comprises the following steps: Obtaining the particle size of converter ash; Obtaining the softening temperature of converter ash; Obtain the hemispherical temperature of converter ash; Obtain the flow temperature of converter ash.

6. The method for treating zinc-containing smoke according to claim 2, characterized in that: The method of obtaining the physical characteristic data of blast furnace ash and converter ash at a preset mixing ratio comprises the following steps: Obtaining the softening temperature of blast furnace ash and converter ash at a preset mixing ratio; Obtain the hemispherical temperature of blast furnace ash and converter ash at a preset mixing ratio; Obtain the flow temperature of blast furnace ash and converter ash at a preset mixing ratio.

7. The method for treating zinc-containing smoke according to claim 1, characterized in that: The pre-processing of the raw materials in the raw material bin comprises the following steps: Mix the ingredients in the raw materials according to a preset ratio; The raw material is subjected to wheel milling treatment; Compacting the raw materials and making them into finished products; The finished product is screened.

8. A zinc-containing fume treatment device, characterized in that: include: Raw material preparation module, used to prepare zinc-containing fume treatment raw materials; A component acquisition module, used to acquire component characteristic data of the raw material; A physical acquisition module, used to acquire physical characteristic data of the raw material; A raw material conveying module, used for conveying the raw materials to the raw material bin; A raw material processing module, used for pre-processing the raw materials in the raw material bin; The raw material reaction module is used to transport the raw materials to the rotary kiln for processing and reaction.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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