PROCESS FOR PRODUCING SELF-REDUCING BRICK-FORMING SECONDARY RAW MATERIAL BY PROCESSING METALLURGICAL AND INDUSTRIAL WASTE DUSTS TOGETHER WITH CARBON-BASED COMPONENTS.
Patent Information
- Authority / Receiving Office
- TR · TR
- Patent Type
- Applications
- Current Assignee / Owner
- VECO İÇ & DIŞ TİCARET SANAYİ LİMİTED ŞİRKETİ
- Filing Date
- 2026-06-11
- Publication Date
- 2026-06-22
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Abstract
Description
1 TARIFF METALLURGICAL AND INDUSTRIAL WASTE DUSTS WITH CARBON-BASED COMPONENTS SECONDARY IN BRICK STRUCTURE THAT REDUCES ITSELF THROUGH CO-PROCESSING RAW MATERIAL PRODUCTION PROCESS Technical Area 5 The invention involves integrating metallurgical and industrial waste dusts with carbon-based components. a self-reducing briquette structure aimed at converting it into a secondary metallurgical raw material It is related to the production process. The invention specifically concerns the formulation of iron oxide-containing wastes into carbon-controlled composite structures. by being able to self-reduce inside the furnace without needing an additional reduction reaction. It involves an innovative production process that enables its transformation into a briquette structure. State of the Art 15 Today, fine-grained residues from iron and steel production processes are being recycled. The most common approach to their evaluation is to agglomerate these materials into pellets. It appears that the process involves converting the product into briquettes or similar condensed products. Current techniques... Solutions generally include iron ore fines, muds and dusts of DRI origin, steel mill or arc 20 furnace dusts, baghouse dusts, and in some cases, slag / mill scale, are by-products containing iron oxide. The products are mixed and pressed with specific binders, and then directly reduced by electric current. It relies on recharging in processes such as arc furnaces or basic oxygen furnaces. This The common goal of these techniques is to reprocess waste with high metal content instead of disposing of it. The goal is to turn around materials, reduce inventory levels, and recover the value of the materials. This is reflected in 25 Most of the systems described in the existing documents are specific, formed within a single facility. focusing on waste streams; metallic and carbonaceous wastes from multiple sectors into a single system. It does not present a holistic structure for combining them under an integrated prescription. Some of the known applications are pellets 30, which are produced particularly in direct reduced iron plants. It is based on the reuse of DRI fines, DRI sludge, DRI fines, and dedusting powders. This type In these methods, the material is first screened and crushed to adjust the particle size, then sodium Mixing with binders such as silicate, bentonite or cement, briquetting in roller presses, and The process then describes stages such as curing to increase its strength. The technique described here... The logic is that iron-containing by-products generated within the same production chain should be returned to the same chain. 2 It is about nourishment; in other words, the process operates on the logic of internal recycling within the organization. This While the approach is important, the mine site's fine ore, steel mill dust, and rolling mill sources are also relevant. Streams from different sources, such as slag sludge and coal washing plant waste, form a single metallurgical system. rather than combining them in the composite, but rather reusing specific DRI-based by-products. It is directed towards. 5 Another known approach is to produce carbon-containing composite briquettes from steel mill dusts containing oil. It is the production of electric arc furnace dusts or similar dusts with different oil content in these systems. It is mixed with a carbonaceous material and a binder, then briquetted with pressure rollers, and Sufficient mechanical performance is achieved by adjusting the roller speed depending on the increase in the oil content of the mixture. It appears that efforts are being made to achieve higher resistance. Solutions in this field, especially those involving oily powders, are being sought. the problem of producing briquettes of sufficient strength and maintaining the process without reducing production capacity It focuses on this. Similarly, in mill scale / scale-based studies, iron oxide is used. The residues are dried and ground with additional materials such as paper pulp, then hot briquetted. by transforming them into dense, high-strength briquettes, and these briquettes are then placed in an electric arc furnace for 15 minutes. It is seen that this is the main objective in this technical approach as well, to process a specific type of waste into a single entity. The goal is to revive it in the kiln using an agglomeration recipe. Another important line in the current technology is the combination of baghouse dusts with a carbon source. The process involves converting baghouse dust into pellets or briquettes of a reducing nature. In these approaches, 20% of baghouse dust is used. It contains a high percentage of iron oxide and a certain amount of zinc, along with anthracite, graphite, coal, and coke. a solid obtained by adding pet odor, tar, molasses or similar carbon sources It is stated that the composition is used as a feedback material in steel production furnaces. The technical emphasis here is on returning the waste dust to the furnace without losing the valuable metals it contains, and a 25 suitable for reduction with the aid of carbon without using a separate metal reducing agent The goal is to create a composition. However, this approach essentially involves recycling baghouse dust. It is focused on centralizing the purification and formulation of numerous heterogeneous waste streams. It combines these elements with a logical design, acting as both a metallic briquette and an in-kiln carbon regulator. It does not present a comprehensive structure that produces a product family. For example, "Method for Producing Briquettes from Pellet Fines" with the number US20170268079A1. DRI Sludge, DRI Fines and Dust from DRI Dedusting Systems, for Industrial Use in Direct- The patent application titled "Reduced Iron Production Processes" includes pellet fines, DRI sludge, and DRI fines. and the DRI dedusting system for the production of briquettes from dust materials; for this purpose, grinding, screening, Briquetting in roller presses, using sodium silicate and bentonite or composite Portland cement such as 35 the use of binders and curing to increase physical strength It summarizes that the briquettes produced in the application are directly recycled back into reduced iron production processes. 3 The aim is to provide this. However, this solution, as seen in the text, involves DRI facilities and Focusing on pellet-derived by-products; ore dust from the mine site and steel mill / arc furnace flue. dust, rolling mill scale and coal washing plant waste, graphite dust and recovered carbon black, etc. A statement regarding the combination of external carbon dioxide currents into a single integrated composite. It does not include. Similarly, in the current text, there are 5 elements that adjust the chemical composition of the liquid metal. a description of a separate carbon briquette function or a multi-site center-satellite structure It does not accept; therefore, the application in question only concerns the return of in-house DRI by-products. It remains focused on achieving its goal and fully addresses the problem of the proposed integrated heavy industry symbiosis. It does not solve the problem. Another example is “Method for Producing Briquette with Carbonaceous”, numbered EP2199417A1. Material Incorporated Therein by Use of Oil-Containing Iron-Making Plant Dust” application. The application states that the powder is produced by adding at least one carbonaceous material and a binder to steel mill dust containing oil. a mixture is formed, this mixture is briquetted with pressure rollers, and the oil content of the mixture By adjusting the roller rotation speed depending on the situation, carbon composite with sufficient strength 15 It is stated that briquettes are produced. The text also mentions that electric arc furnace dusts are used together. It can be blended with other steel plant dusts, some of which may contain oil, such as mill scale. It is stated that it can be substituted with mill sludge. However, the main problem with this solution is the oil. The goal is to produce briquettes of sufficient strength from steel plant dusts, as stated in the description. mining site fines streams, coal wash waste, graphite dust or recovered carbon 20 The integrated use of waste within the central prescription logic is not included in this application. Furthermore, this application also addresses waste... The combined use of metal and carbon resources results in both secondary metallurgical raw materials and This is not a comprehensive process that produces a family of in-furnace carbon adjusters, but rather one that primarily uses oil. A macro solution is described that maintains briquette production capacity from powders with varying compositions; this Therefore, the application fully addresses the targeted multi-input and multi-output integration problem. 25 It does not meet the requirements. Another example is document number WO2018207131A1, titled “A Process for Manufacturing Self-Reducing Pellets / Briquettes from Bag House Dust Mixed with Carbon to be Used in Steelmaking Furnaces” This is a patent application titled [Title of Application]. The abstract of this application describes iron oxide and at least a certain percentage of zinc 30. Baghouse dust containing these materials is combined with a carbon source to form a solid pellet or briquette. The composition was obtained using anthracite, graphite, coal, coke, pet coke, and tar as carbon sources. where molasses, decanter sludge, or similar components can be selected and this composition is used to create an electric arc. can be used as recycled charge material in furnaces or basic oxygen ovens This is explained. This application, in itself, is about a self-reducing powder-carbon composite, 35 It presents an important technical outline. However, the text that appears, especially regarding baghouse dust, It focuses on the transformation and reuse of zinc-containing powders along with carbon; 4 fine ores of mining origin, rolling mill slag sludges, coal washing plant wastes and reclaimed materials a formula and process that combines streams from different sectors, such as carbon black. It does not reveal the integrity of the whole. Furthermore, the text includes central purification and distribution to different areas. a separate CBC function for multi-product family production or in-furnace recarburization It does not appear to be structured in this way. Therefore, the application in question, baghouse dust + carbon axis 5 Although it offers a solution to the reuse problem, it does not treat heavy industrial waste metals and carbonaceous wastes together. The goal of producing both CBI / HBI and CBC by combining them on a metallurgical platform has been fully achieved. It does not meet the requirements. The current technique represents a significant accumulation of knowledge regarding the agglomeration of waste iron oxide materials. It has been created by briquetting DRI by-products and carbon composite briquettes of oil steel plant dusts. conversion, reuse of baghouse dust as self-reducing pellets / briquettes and mill Various solutions have been developed, such as scale-based hot briquetting. However, the common limitation observed is, Most solutions are geared towards individual waste streams, on-site reuse, or a specific furnace type. It is adapted. In contrast, different metallic and carbonaceous wastes from heavy industry are centralized. 15 purification and formulation in this manner, secondary furnace feed suitable for use at a location close to the site. integrated processes involving the conversion of metallurgical briquettes into carbon-adjusting briquettes. The approach does not appear to be clearly and comprehensively presented in the current technique. Conclusion by eliminating the disadvantages of the current technology, it combines waste from different sectors into a single system. Matching under metallurgical prescription, carbonaceous components only as binders or auxiliaries 20 and to move the reuse chain to a broader industrial symbiosis logic The existence of a need and the inadequacy of existing solutions necessitate an improvement in the relevant technical field. It has made it mandatory. Brief Description of the Invention The present invention meets the aforementioned requirements while eliminating all disadvantages. and carbon-based metallurgical and industrial waste dusts, which offers some additional advantages. 30 in a self-reducing briquette structure integrated with components to secondary metallurgical raw material. It is related to a production process aimed at its transformation. Based on the current state of the art, the aim of the invention is to utilize raw materials from different industrial sources. metal and carbon-containing wastes are combined with an integrated metallurgical recipe and directly fed into the furnace. By converting it into value-added secondary raw materials suitable for feeding, it both recovers and... 35 The goal is to increase productivity and optimize production processes. The purpose of the invention is to process iron ore fines, arc furnace flue dust, and rolling mill slag. By combining waste metal inputs from different sources, such as those mentioned above, into a single metallurgical mixture, different The goal is to achieve higher recycling rates by evaluating industrial waste together. Another objective of the invention is to process coal wash waste, graphite dust, and recovered carbon black into metal 5. Thanks to its formulation with powders containing these components, carbon and metal phases can exist within the same structure. The goal is to reduce the need for additional reducing agents by integrating the system. Another purpose of the invention is to process purified dry powder mixtures at a central waste reception and sorting facility. By using the station, heterogeneous waste streams can be standardized, resulting in a 10% improvement in the process. The goal is to achieve consistent and predictable product quality. Another purpose of the invention is to achieve controlled dust collection using closed silo trucks and closed vertical dust receiving silos. Reducing dust emissions and improving occupational safety and environmental protection through transportation and storage infrastructure. the goal is to increase suitability. 15 Another purpose of the invention is to produce waste briquetting through the use of an in-situ waste briquetting unit. By obtaining the briquettes directly at the point of consumption, logistics costs are reduced and The goal is to increase operational efficiency. Another purpose of the invention is the production of cold-pressed (CBI) and hot-pressed (HBI) briquettes. The combination of options allows for flexibility in meeting different furnace and process needs. The goal is to ensure the use of raw materials. Another objective of the invention is to design the produced briquettes in a way that is suitable for direct furnace feeding. 25 Thanks to this, production processes can be integrated without the need for additional preparation or agglomeration processes. The goal is to ensure integration. Another objective of the invention is to improve the liquid carbon briquette (CBC) formulation. It is the provision of an integrated carbon source that adjusts the chemical composition of the metal. 30 Another objective of the invention is the use of metal oxide-containing powders together with carbon compounds. thanks to the self-reducing reaction mechanism inside the furnace is the creation of. 35 6 Another objective of the invention is the combined use of central (HUB) and satellite (SPOKE) facility architectures. Thanks to this, waste streams from different sites can be optimized in a single center for on-site production. It is distributed with the advantage of being free from stress. Another objective of the invention is to integrate waste from multiple industrial sources, thereby creating 5 The goal is to support the transition from a linear production model to a circular economy model. Another aim of the invention is a process structure that focuses on the production of value-added products instead of waste disposal. This results in reduced environmental burden and the creation of economic value. Another objective of the invention is the combined design of metallic and carbonaceous phases in chemical / metallurgical processes. The goal of this recipe is to increase oven efficiency and optimize energy consumption. Another objective of the invention is the controlled processing of powders with different particle sizes and chemical compositions. The result of mixing is the production of homogeneous briquettes with high mechanical strength. 15 The structural and characteristic features and all the advantages of the invention are given in the figures below and in relation to these figures. This will be understood more clearly thanks to the detailed explanation written with references. Therefore, the evaluation should be made taking these figures and detailed explanations into consideration. It is required. 20 Brief Description of the Figures The structure of the current invention and the best understanding of its advantages, including additional components. This should be evaluated together with the figures explained below. 25 Figure 1; central purification of heavy industrial source metal and carbon-containing powder raw materials. Processed at the facility and then briquetted on-site to produce CBI / HBI and CBC products. a process flowchart showing the conversion and feeding of these products into the melting furnace It expresses. 30 Reference Numbers 10. Central Waste Reception and Sorting Facility (HUB) 11. Iron ore fines input 35 12. Steel mill / arc furnace flue dust input 13. Rolling mill slag sludge input 7 14. Purified dry powder mixing station 20. In-situ waste briquetting unit (spoke) 21. Closed vertical dust receiving silos Detailed Description of the Invention 5 This detailed description explains that the invention is a carbon-based system for metallurgical and industrial waste dusts. secondary metallurgical raw material in a self-reducing briquette structure integrated with its components The production process for its transformation is merely an example to help better understand the subject. It is described as such and without creating any limiting effect. 10 The invention relates to the processing of fine-grained metal-containing waste and carbon dioxide generated during heavy industrial activities. controlled combination of auxiliary inputs in direct melting processes a production process for converting raw materials into usable secondary metallurgical raw materials and this It relates to the appropriate formulation scheme. In this context, the invention covers waste streams containing iron oxide 15 instead of simply being stored or disposed of, a composite material suitable for reuse. It is based on mixing the ingredients and then transforming that mixture into briquette form. The general working principle of the invention is that metal-containing powders obtained from different fields are first centralized. gathered at one point, purified from foreign components and prescribed, then By being briquetted in a controlled manner at the point of use, CBI (cold pressed briquette) and HBI (hot pressed briquette) are produced. This involves converting the material into products such as pressed iron (CBC) or CBC (in-furnace carbon adjuster). As shown in Figure 1, the process input is iron ore powder (fines) (11), steel mill / arc central waste acceptance of furnace flue dust input (12) and rolling mill slag sludge input (13) streams and bringing together the separation facility (HUB) (10) and then in-situ It is based on the principle of converting the waste into the final product via a briquetting unit (spoke) (20). 25 The process initially supplies iron ore fines (11) as input. This input is used in mining small particle size, iron content that is difficult to evaluate as the main product during operations refers to fine fractions that are found and are difficult to use directly as classic charging materials. When iron ore powder (fines) input (11) is taken into the process, firstly physical observation, 30 It is evaluated in terms of moisture control and particle size suitability. The aim is to determine the subsequent use of this input. The goal is to ensure homogeneous behavior during the mixing and briquetting steps. If the moisture content is high... The drying process removes stones, large pieces, rooted lumps, or non-metallic foreign matter. If any, they are separated. In practice, the iron ore fines input (11) is kept as much as possible. The mixture is made fluid, pourable, and capable of homogeneous distribution. This preparation is then followed by 35 This is important so that it can be mixed in a balanced way with other metal oxide and carbon compounds. 8 Following this, steel mill / arc furnace flue dust input (12) is taken into the process. Steel mill / arc furnace flue dust dust input (12), metal oxides collected in gas cleaning systems during iron and steel production rich in nutrients, with very fine grain size and occasionally containing zinc, lime, carbon residue or different It is a waste stream that may contain alloying elements. When this input is used directly, it causes dusting. Since irregular feeding can create environmental dispersion and safety issues, 5 within the scope of the invention It is subjected to controlled processing. Steel mill / arc furnace flue dust input (12) is primarily in a closed environment. It is accepted, purified of free foreign matter, and screened or separated using sorting equipment if necessary. It is cleaned of very large or unwanted phases using [method name] and then according to the prescription. It is converted into a usable, dry, portable powder form. Thus, this input is no longer considered waste. It is transformed from a powder into a metallurgical component that acts as a source of reducible iron oxide. 10 It is transformed into this form. The next basic input is rolling mill slag mud input (13), which is the input for rolling or similar In high-temperature metal processing, the oxide layers detached from the metal surface are removed by water and thinners. It refers to the material in the form of mud, which is formed as a result of transporting it together with solids. Rolling Mill 15 Since the slag mud input (13) usually contains a certain amount of water, it is not taken directly into the mixture. First, its moisture content must be reduced. Therefore, the rolling mill slag mud input (13) must be reduced first. It is dewatered, then dried, and the lumps are broken up to make it finer and freer to flow. This The aim at this stage is to ensure that the iron oxide phases in the rolling mill slag mud input (13) are not lost 20 This process results in a more homogeneous structure and higher mechanical strength. It contributes to the production of briquettes. Iron ore dust (fines) input (11), steel mill / arc furnace flue dust input (12) and Rolling mill slag sludge input (13) after undergoing appropriate pre-preparations, central waste reception 25 and sorting facility (HUB) (10) are brought together within the central waste reception and sorting facility. (HUB) (10) is one of the most important parts of the invention; because they come with different physical properties This is the main processing point where waste streams are brought closer to a single quality standard. Central waste reception and each input is checked and accepted separately within the sorting facility (HUB) (10), if necessary It is dried again, sorted through a sieve, magnetic or mechanical separation is applied, and foreign 30 The parts are removed. The central waste reception and sorting facility (HUB) (10) is also a This is the equilibrium point; here, the iron oxide level and fluidity of the materials arriving in each batch are regulated. The recipe is adjusted taking into account the condition, moisture, and particle structure. Figure 1 shows the center of the flow. The central waste reception and sorting facility (HUB) (10) seen is a common place for scattered industrial wastes. It refers to the main station where it is converted into the production language. 35 9 Metal-containing dusts that have been purified within the central waste reception and sorting facility (HUB) (10) and additional carbon auxiliary components are then purified in the dry powder mixing station (14) It is taken into the purified dry powder mixing station (14), the final recipe to be used in the process. It is the unit where iron ore powder (fines) input (11), steel mill / arc furnace flue dust input (12) and rolling mill slag sludge input (13), coal washing waste, graphite dust and 5 with carbonaceous auxiliary materials such as recovered carbon black (RCB) in certain proportions They are mixed. The main objective at this stage is to ensure a balanced distribution of the metal phase and the carbon phase within the briquette. It is the dispersion of the total amount of iron-bearing phases and the carbon-bearing phases when preparing the mixture. reduction and recarburization capacity, printability of the material, and intended use of the final product. They are evaluated together. If the target product is metallic charge reinforcement, then a 10 with higher iron content is preferred. The prescription is preferred; if the target product is a CBC type that will act as a carbon adjuster during melting. The carbon content of the product is increased in a controlled manner. Purified dry powder mixing station (14) Therefore, it is not only a mixer but also a prescription center that determines the type of product. The mixing process in the purified dry powder mixing station (14) is to homogenize the materials into a powder 15 The mixing process is continued for a sufficient amount of time to allow the matrix to form. The result of this mixing process is... The resulting mixture shows no macroscopic separation of the components, consisting only of metal oxide phases. A structure in which carbon-containing phases coexist and which is defined as a single-phase powder composite. It forms. If necessary, binding auxiliary substances are added in very small amounts during this mixing process. can be added in proportions or controlled humidity adjustment can be applied to increase the compressibility of the mixture 20 It can be done. However, the basic principle is to obtain a mixture that is as dry and fluid as possible. Because Excessively moist mixtures tend to clump together during storage and become uneven during pressing. This can cause density. Obtained at the outlet of the purified dry powder mixing station (14) The substance has components that are physically evenly distributed, preventing separation during transport. It is a powder composite with low tendency to adhere and suitable for briquetting. This composite will be used in the next 25 minutes of the process. It is sent to a point close to where it will be used during this phase. The prepared composite mixture is then transferred into closed vertical powder receiving silos (21). Closed vertical dust receiving silos (21) keep the mixture safe, enclosed and away from the environment before final briquetting. It ensures storage under controlled conditions. The basic use of closed vertical dust receiving silos (21) is 30 The reason is that if very fine-grained metal and carbon powders are kept in an open environment, it can cause problems. The goal is to prevent problems such as dusting, material loss, moisture absorption, and recipe deterioration. Closed vertical dustbin. The receiving silos (21) also serve as an intermediate buffer between the briquetting line and the central receiving silos; thus, the receiving silos serve as an intermediate buffer between the briquetting line and the central receiving silos. Flow continuity is ensured between the preparation lines. The material is placed in closed vertical powder receiving silos (21) A geometry that facilitates flow is preferred, bottom discharge is controlled, and if necessary, different 35 Prescriptions can be kept in separate compartments. In Figure 1, the central waste reception and sorting facility (HUB) (10) and Closed vertical powder receiving silos located after the purified dry powder mixing station (14) (21), it is assumed that the powder composite is kept in an orderly manner before proceeding to the on-site production stage. It shows the points. The prescribed mixture is taken in a controlled manner from inside the closed vertical dust receiving silos (21), on site. The waste is fed into the (IN-SITU) briquetting unit (spoke) (20). In-situ waste briquetting 5 unit (spoke) (20), installed near the place of use or directly in the site of use and dust It is the production unit that transforms the composite into a compressed briquette form. In this unit, the material is first... It is dosed, flow stability is ensured, and then shaped under pressure. In-situ. The pressure value applied in the waste briquetting unit (spoke) (20) is CBI, HBI or the final product CBI, HBI or It can be adjusted according to its design as CBC. 10 when higher density and strength are required. Stronger compression or additional heat support can be applied; more controlled porosity. When the target is achieved, the pressing parameters are adjusted accordingly. The on-site installation of this unit... A key advantage is that large volumes of powder do not need to be transported repeatedly over long distances. The key is to prevent the briquettes from being left behind and to ensure that the produced briquettes are directed directly to the point of consumption. The first purpose in the in-situ waste briquetting unit (spoke) (20) is to prepare the mixture The goal is to make it mechanically durable and portable. However, the invention is not only about mechanical shaping. It is not limited to this; the metallurgical behavior of the product is also determined here. If the product is CBI or if designed as HBI, the ratio of iron oxide phases in the mixture, pressing The density and, if necessary, the level of heat treatment will ensure that the final briquette is suitable for the kiln charge. is selected accordingly. If the product is designed as CBC, the carbonaceous auxiliary in the mixture is selected. The ratio and distribution of the substances will give the desired carbon setting effect in the liquid metal. It is arranged. Therefore, the in-situ waste briquetting unit (spoke) (20) is only physical. Not just a compression machine, but also a final process that defines the product function. It is the center. 25 The products obtained after briquetting are separated according to their intended use. Those with a more dominant iron content... Products with a dense structure and that can replace metallic charge are classified as CBI or HBI. Products with prominent carbon offsetting and recarburization effects are used in CBC (carbon-based carbon capping) applications. Each In both cases, the goal is to ensure the product is fed into the oven in a controlled and safe manner. Products 30 If desired, the material is allowed to rest for a certain period after pressing to allow it to gain surface strength, or Additional drying is done if necessary. At this stage, loose particles on the briquette can be separated and... It can be recycled back into the process. This reduces material loss and closes the production cycle. It is possible. 35 One of the important technical aspects of the invention is the steel mill with iron ore powder (fines) input (11) / Different iron oxides such as arc furnace flue dust input (12) and rolling mill slag sludge input (13) 11 It involves evaluating waste materials together with carbon-based auxiliary materials in the same formula. In this way... Briquettes are not only a form of transport, but also an active ingredient that reacts during melting. It transforms into a metallurgical composite. Specifically, the carbonaceous phase is in close contact with the iron oxide phase. its presence inside, a structure that self-reduces under the thermal conditions inside the furnace. It helps in its formation. Thus, the need for external reducing agents can be reduced to some extent and 5 It is possible to obtain useful payload from metal-containing waste. As a result, the process in question is the input of iron ore powder (fines) (11), steel mill / arc central waste acceptance of furnace flue dust input (12) and rolling mill slag sludge input (13) streams and cleaning and balancing in the separation plant (HUB) (10), purified dry powder mixture 10 Prescription with carbonaceous components in station (14) closed vertical dust receiving silos (21) safely stored inside and finally in-situ (spoke) waste briquetting unit (20) based on the principle of being converted into products suitable for direct oven feeding by being pressed inside. It is based on.
Claims
12 REQUESTS 1. Secondary self-reducing briquette structure made from metallurgical and industrial waste. It is a production process aimed at converting metallurgical raw materials, and its characteristic feature is; - iron ore dust (fines) input (11), steel mill / arc furnace flue dust input (12) 5 central waste acceptance of rolling mill slag sludge input (13) materials and Purification within the separation plant (HUB) (10), - purified materials within the purified dry powder mixing station (14) metallurgical coal wash waste, graphite dust and / or recovered carbon black It involves the steps of mixing to form a composite. 10 2. A process that conforms to Claim 1, and its characteristic is; purified dry powder mixing station (14) closed vertical powder receiving silos (21) where metallurgical composite mixture is formed inside stored inside and then in-situ (in-situ) waste briquetting unit (spoke) (20) includes the briquetting process steps under pressure.
3. A process that complies with claims 1 and 2, characterized by: in-situ waste briquetting unit 15 (spoke) (20) products obtained as a result of the briquetting process carried out within cold-pressed briquettes (CBI) and / or hot-pressed briquettes suitable for direct furnace feeding. It involves a process step to produce it in the form of iron (HBI).
4. A process that conforms to claims 1 and 2, and its characteristic is; purified dry powder mixing station (14) Carbon 20 with the addition of coal wash waste, graphite dust and recovered carbon black. In-situ waste briquetting unit (spoke) of adjusted composite mixture (20) the process step of briquetting in the form of carbon briquettes (CBC) under pressure It includes.
5. It is a process that conforms to Claim 1 and its characteristic is; iron ore powder (fines) input (11), Steel mill / arc furnace flue dust input (12) and rolling mill slag sludge input (13) 25 Moisture reduction of materials within the central waste reception and sorting facility (HUB) (10), The process involves subjecting the particles to size adjustment and removal of foreign matter. It includes the step.
6. A process that complies with Claim 1, and its characteristic is; purified dry powder mixing station (14) iron ore dust (fines) input (11), steel mill / arc furnace flue dust 30 input (12) and rolling mill slag mud input (13) together with carbon-containing inputs The process involves mixing the powders to obtain a single-phase powder composite.
7. A process that complies with Claim 2, and its characteristic is that it is in closed vertical dust receiving silos (21). in-situ waste briquetting unit (spoke) (20) of preserved composite mixture It involves the process of feeding it into the system. 35 8. A process that complies with claims 1 and 2, and its characteristic is; purified dry powder mixing station (14) in-situ briquetting of metallurgical composite mixture formed within the waste. 13 unit (spoke) (20) contains inputs containing iron oxide together with inputs containing carbon. the briquetting process step to include a self-reducing briquette structure It includes.
9. A process that conforms to claims 1 and 2, and its characteristic is that iron ore powder (fines) is the input (11), Steel mill / arc furnace flue dust input (12) and rolling mill slag sludge input (13) 5 purification of materials within the central waste reception and sorting facility (HUB) (10) and the composite mixture formed in the purified dry powder mixing station (14) Processing steps within the in-situ waste briquetting unit (spoke) (20) This involves a process step that is carried out within a centralized and on-site production structure.
10. A process that conforms to Claim 1, and its characteristic is; iron ore fines input (11), 10 steel mill / arc furnace flue dust input (12) and rolling mill slag sludge input (13) The process of sourcing materials from different industrial sources and processing them together. It includes the step.
11. A process in accordance with claims 1 and 6, characterized by; purified dry powder mixing station (14) The composite mixture obtained as a result of the mixing process carried out inside is 15 mixing the components in such a way as to form a structure in which they are distributed together on a macroscopic scale It includes the process step.