Improve Quality of Reclaimed Carbon

Recycled carbon black with improved properties for reinforcing rubber products. The recycled carbon black has a modified surface condition with specific characteristics that enhance bonding with rubber components. The modifications involve oxidative decomposition of rubber residuals on the carbon black surface followed by filling pores with carbide. This removes rubber carbide adhering to the carbon black and exposes the surface for better rubber bonding. The modified carbon black has a nitrogen surface area of 50-250 m2/g, a Raman peak intensity ratio of 1580/1350 cm-1 of 84-111, and fewer defects compared to unmodified recycled carbon black.

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A process to improve the quality of carbon black produced from tire pyrolysis. The process involves multiple stages to activate and stabilize the carbon black: 1. Preheating the crushed tires at a low temperature to remove volatile compounds. 2. Further heating at a higher temperature to decompose the tire components into carbon black and gas. 3. Cooling and separating the carbon black from the gas. 4. Post-treatment of the carbon black, such as grinding and sieving, to further improve its properties. By using a staged heating process, it allows better control and separation of the carbon black from impurities like iron wires. This results in a more stable and higher quality carbon black product from tire pyrolysis.

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A method to produce carbon black for tires and color masterbatches using waste tire powder instead of traditional carbon black feedstocks like coal tar or petroleum residues. The waste tire powder and preheated oil are injected simultaneously into a high-temperature reactor at 1600-2100°C to crack and convert the tire powder into carbon black. The carbon black smoke is collected, granulated, and dried to obtain the targeted masterbatch for tire and color applications. This allows utilizing waste tire powder as a sustainable and cost-effective carbon black source.

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A method to produce white carbon black from waste tires for use in tires and other rubber products. The method involves extracting silica from tire rubber using an alkaline solution, followed by carbonization to convert the extracted silica into white carbon black. The extracted silica is obtained by treating shredded tire rubber with a high-temperature alkaline solution. The carbonization step involves heating the extracted silica to form white carbon black. This allows recycling and reusing silica from waste tires instead of mining virgin silica.

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A system and method for producing high-quality carbon black from waste tires using pyrolysis. The process involves heating waste tires to pyrolyze them, separating the char from foreign substances containing iron, grinding the char to form carbon black, pelletizing the carbon black, cooling and drying the pellets, and packaging the pellets. The pyrolysis step has two stages: heating tires initially and then heating the char and iron from the first stage at higher temperatures. This two-stage pyrolysis allows more complete conversion of the tire waste into carbon black. The grinding steps involve sequential milling to progressively reduce the particle size. This sequence of pyrolysis and grinding stages produces high-quality carbon black with improved properties compared to existing methods.

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Method for modifying waste tire thermal cracking carbon black to improve its properties for use in rubber compounds. The modification involves three steps: 1) high temperature treatment under nitrogen or vacuum to partially decompose the carbon black, 2) acid pickling to remove ash, and 3) grafting a coupling agent onto the carbon black. This modification sequence reduces ash content, improves dispersion, and enhances rubber reinforcement compared to just acid pickling or high temperature treatment alone.

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Deep processing technique to improve the quality of waste tire pyrolysis carbon black. The technique involves steps like sieving, grinding, magnetic separation, and air classification to remove impurities and agglomerates from the pyrolyzed carbon black. This results in carbon black with higher surface area, oil absorption, and reinforcing properties compared to untreated pyrolyzed carbon black. The technique involves sieving to remove large pieces, grinding to crush, magnetic separation to remove ferromagnetic impurities, and air classification to further separate and refine the carbon black particles.

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An environmentally friendly process to produce high-quality recycled carbon black from waste tires. The process involves impurity removal, drying, activation, and granulation steps. The impurity removal involves screening out large stones and deironing. The drying reduces moisture content. The activation involves heating in an oxygen-deficient atmosphere to crack the carbon structure and release volatile products. The granulation converts the activated carbon into a powder. This process improves the quality of recycled carbon black from waste tires, reducing oil absorption, iodine absorption, and specific surface area compared to conventional methods.

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Processing and using recycled carbon from tire pyrolysis to improve the performance of rubber compounds. The recycled carbon is milled to a specific particle size distribution with a target D50 below 2.7 microns and maximum 15% over 5 microns. This milled slurry is mixed with elastomer and other fillers to form rubber composites. The milling step reduces agglomerates and improves dispersion compared to unprocessed pyrolysis carbon. The milled recycled carbon has better rubber compound properties like reduced macro dispersion compared to unprocessed pyrolysis carbon.

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Method to regenerate activated carbon from waste tire carbon black to improve its value and utility. The process involves treating the waste tire carbon black to remove impurities, granulating it, and then activating the granules again. This improves the activated carbon properties like iodine adsorption capacity. It removes ash and volatile matter from the carbon black, reduces carbon loss during activation, and uses waste activated carbon to generate water vapor for activation.

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A process for extracting and recycling carbon black from waste tires and scrap rubber to form reclaimed carbon black. The process involves pyrolysis of tire and rubber feedstock in a reactor to decompose the organic material and extract the carbonaceous component. The reclaimed carbon black can then be pelletized and used in applications like plastic pigmentation, rubber compounding, and tire manufacture. The process reduces landfill waste from tires by extracting a valuable recyclable material from them. It also allows for recycling of carbon black from scrap rubber.

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Ecological process for purifying and reactivating carbon black from tire pyrolysis that reduces environmental impact compared to traditional methods. The process involves solvent extraction or heat treatment to remove impurities like bitumen and zinc from the carbon black. The solvent extraction uses medium polarity solvents with low toxicity and environmental impact. The heat treatment is done in an inert atmosphere. After purification, selective extraction of zinc using natural carboxylic acids like citric acid further improves the carbon black quality. This purification process enhances the carbon black's reinforcing properties by removing impurities and restoring the surface area.

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A process for converting used tires into carbon black by thermal decomposition that avoids the formation of coke and produces a cleaner liquid fraction. The process involves dissolving the tire filler in a solvent at low temperature, then raising the temperature to crack the polymer bonds. This allows selective extraction of the rubber components without extensive coke formation. The resulting carbon black is filtered and washed. The liquid fraction contains aromatic hydrocarbons suitable for solvent or fuel applications.

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Process system for preparing pyrolysis carbon black from waste tires that overcomes the issues of steel wire entanglement and blocking during pyrolysis. The system uses a chain-spoke rotary drum to break the tire into carbon and separate steel. The carbon is further pulverized in a fluidized bed jet mill. Exhaust gases from the mill are recycled to heat the pyrolysis drum. The pulverized carbon is then granulated in a fluidized bed with water spray to prevent agglomeration. This allows continuous production of small-particle pyrolysis carbon black from waste tires without issues of steel wire entanglement.

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A method to prepare regenerated carbon black from pyrolyzed tire rubber for reuse in tire manufacturing. The method involves treating the pyrolyzed carbon black with acid followed by grinding before activation. This removes ash and restores activity by cleaning organic molecules from the surface. The acid treatment before activation ensures uniformity and purity of the regenerated carbon black. The acid-treated, ground pyrolyzed carbon black is then activated in oxygen, carbon dioxide, water vapor, and nitrogen to restore its reinforcement performance.

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Method to regenerate pyrolysis carbon black from waste tires to improve its reinforcement properties and enable recycling of tire rubber. The regeneration involves vacuum surface activation to remove ash and restore activity. The pyrolysis carbon black is heated in vacuum to rapidly decompose surface organic compounds. This exposes more active sites and reduces activation temperature. After heating, cooling prevents carbon structure changes. The regenerated carbon black has higher reinforcement compared to untreated pyrolysis carbon black.

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Efficient and carbon-rich recycling of waste tires by pyrolysis and activation to produce high quality carbon materials instead of low quality coke. The process involves crushing the tires to obtain rubber powder, pyrolyzing the powder at temperatures around 800°C in an inert atmosphere to yield high quality carbon and oil, and then activating the carbon at temperatures around 1300°C with a catalyst like zinc chloride to produce sulfur-doped porous carbon. This allows recovering most of the carbon content from the tires instead of losing it as CO2 or low quality coke.

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Recovering carbon black from waste tires and processing it into a form that can be more easily used in rubber and plastic applications. The process involves pyrolyzing tire rubber to extract carbon black, grinding the pyrolyzed rubber to reduce particle size, drying the ground material to remove moisture, and granulating the dried material into a uniform size. This reduces agglomerate size, improves dispersibility, and reduces contaminants compared to directly pyrolyzing whole tires. The granulated carbon black can have better properties when added to rubber compounds.

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Environmentally friendly regeneration process for activated carbon that improves the recovery of waste activated carbon and restores its adsorption capacity. The process involves pulverizing the waste activated carbon, vacuum extracting to desorb adsorbates, washing with acid-base solutions, and then activating at high temperature with potassium ferrate to further restore pore structure and carbonization. The modified phenolic resin binder used during carbonization helps improve strength and prevent pore blocking compared to traditional pitches.

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Waste tire pyrolysis carbon black processing system for tire manufacturing to change the carbon black structure for tire manufacturing. The system involves a waste tire pretreatment device, pyrolysis activation device, and carbon black deep processing device. The pyrolysis process uses carbonization and high-temperature steam activation. The carbon black deep processing uses grinding and modification integrated technology. This allows upgrading the waste tire pyrolysis carbon black structure to meet tire reinforcement standards.

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Recycling worn tires to obtain carbon-containing material with improved properties for use in tire production. The recycling process involves mechanically crushing the tires, removing bead rings, and then pyrolyzing the crushed material in a reactor. Impurities like metal and particles are removed before pyrolysis by screening and magnetic separation. This pre-processing step reduces impurities in the pyrolysis residue, allowing the obtained carbon material to have higher surface area and lower metal content. The resulting carbon powder can be used as a filler in new tires without degrading tire performance.

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Method to activate waste tire pyrolysis carbon black by micro-oxidation to improve its properties for rubber compounding. The method involves granulating the pyrolysis carbon black instead of directly grinding it, which reduces dust generation. The carbon black is first crushed to remove steel wires from the tires. The tire pieces are then pyrolyzed at temperatures around 400-700°C to obtain different carbon blacks. The pyrolysis gas and oil are condensed and returned as fuel. The carbon black is ground, mixed with granulation solution, granulated, and dried. Additives like carbon black dispersant and silane coupling agent are used in the granulation step to improve the carbon black's lipophilicity and compatibility with other rubber components.

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A method to prepare carbon black for tires using carbon waste instead of traditional fossil fuel sources. The process involves breaking down the carbon waste particle size, treating it with acids and peroxides, pyrolyzing it at high temperatures, and then expanding and activating the resulting carbon black particles. This allows utilizing industrial waste like aluminum electrolysis cathodes and batteries to produce carbon black for tires at lower cost while reducing waste.

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Reducing ash content of pyrolysis carbon black from waste tires while recovering beneficial components like zinc sulfide (ZnS). The process involves selectively removing ash and ZnS from the carbon black through chemical treatments. The carbon black is mixed with water, copper sulfate, and sodium sulfite to dissolve ZnS. Zinc sulfate is then precipitated by adding butyl xanthate. This enriches the ZnS while separating it from the carbon black. The carbon black is then dried to remove the water. This reduces the ash content and recovers the ZnS for reuse.

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Thermal treatment of used tires to convert them into recovered carbon black and fuel. The process involves thermolysis of the tires to decompose the rubber and fibers into the products. The recovered carbon black has a surface chemistry and behavior similar to semireinforcing smoke blacks used in rubber. The fuel has a lower content of carbonaceous material compared to conventional pyrolysis oils. The lower carbon content in the fuel is achieved without post-processing steps like distillation or catalysis. This reduces investment, waste generation, and operating costs compared to conventional methods.

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Process for preparing pyrolysis carbon black from waste tires that involves pyrolyzing waste tires to recover pyrolysis oil and carbon black instead of mainly producing pyrolysis gas. The pyrolysis takes place at 350-400°C using high-temperature flue gas from combusting the pyrolysis gas. The pyrolysis gas is condensed to pyrolysis oil. This reduces energy waste from breaking long-chain hydrocarbons to form pyrolysis gas. The pyrolysis process uses a rotary rake roller with nails that crush and agitate the tires. It also has a vacuum, inert gas, and oxygen depletion system to prevent emissions. The carbon black is consolidated using maltodextrin.

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Method of producing hydrophobic carbon adsorbent from recycled rubber, along with sorbent agents and a regeneration process for used adsorbent. The carbon is made by pyrolyzing rubber at 450-750°C with a catalyst. To make hydrophobic carbon, it's mixed with cellulose fiber. The adsorbent is used for spills of oil and chemicals. The regeneration involves desorbing the contaminants, then heating the carbon with steam to reactivate it. This allows recycling the carbon multiple times without chemicals.

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System and method for refining waste tire pyrolysis char to produce high-quality carbon black. The system involves sequential steps like sorting, pyrolysis, pulverization, molding, drying, screening, and packaging to improve char purity and make spherical carbon black. The pyrolysis furnace removes volatiles from the char before pulverization. This reduces impurities compared to batch pyrolysis. The method also periodically cleans the pyrolysis gas release pipe to prevent buildup.

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Activating waste tire pyrolysis carbon black to improve its properties for commercial applications. The activation involves micro-oxidation treatment in a separate furnace to open up blocked pores and enhance surface activity. This addresses issues with pyrolysis carbon black from waste tires having blocked pores due to ash and coke accumulation, which reduces surface activity and hinders further processing. The activation improves the carbon black's characteristics for subsequent finishing steps and expands its commercial applications.

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Method and equipment to upgrade low-value pyrolysis carbon from waste tire cracking to high-quality pyrolysis carbon black for rubber. The method involves deep processing steps like magnetic separation, grinding, granulation, sieving, and drying to meet rubber standards for tires and belts. The equipment includes a raw material warehouse, magnetic separator, modified silo, grinder, granulator, and radial cylinder dryer. This allows converting pyrolysis carbon from waste tires into usable rubber-grade carbon black.

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Method for preparing mercury-absorbing carbon material using waste tire pyrolysis residue. The method involves cracking waste tires to produce a residue with sulfur content around 2.5%. This residue is granulated and activated using the excess non-condensable gas from the cracking process as the external heat source. Flue gas from the cracking combustion, enriched in sulfur compounds, is passed into the activation furnace to react with the carbon. This provides sulfur loading and activation in a single step. The activated carbon has high mercury adsorption capacity.

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Producing recycled carbon powder regenerated activated carbon for desulfurization and denitration, which involves mixing recovered carbon powder from desulfurization devices with undersized material from activated carbon production. The mixed material is formed, carbonized, and activated to create new desulfurization and denitration activated carbon. This uses the lost carbon powder instead of virgin coal, reducing waste and resource utilization.

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Recycling tires and rubber products to obtain carbon-containing material with improved properties for use in new tires. The recycling process involves mechanically shredding the tires, removing metal bead rings, and treating the shredded rubber with inhibitors to reduce impurities. The treated rubber is then pyrolyzed to produce carbon-containing material. The pyrolysis residue is separated into solid carbon and liquid condensate. The solid carbon is further processed to remove metal contaminants using magnetic separation. The resulting cleaned carbon powder has improved surface area and impurity levels compared to pyrolysis-only recycling, making it suitable for use as a tire filler.

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Method for pelletizing waste tire pyrolysis carbon black to produce uniform-sized carbon black pellets. The method involves mixing the pyrolysis carbon black with a granulation solution containing dispersant, binder, water, and silane coupling agent in a granulator to form pellets. This improves handling and reduces dust compared to ungranulated pyrolysis carbon black. The system includes separate devices for pyrolyzing the tires, preparing the granulation solution, and granulating the carbon black.

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A continuous process for purifying waste tire pyrolysis char to produce high-quality regenerated carbon black. The process involves sequentially treating the char to remove volatiles, crush it, form spherical aggregates, and dry/screen the spherical carbon. This allows purification and shaping in a single continuous operation without mixing volatiles back into the char. This improves carbon black quality compared to batch processing. The char is also pretreated to separate foreign matter and magnetic impurities before drying.

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A continuous system for purifying char obtained through pyrolysis of waste tires to produce high-quality regenerated carbon black. The system involves sequential steps for removing volatile components, pulverizing, forming into spheres, drying, screening, and packing the carbon. This order optimizes purification and spherical shape formation. The key innovation is a continuously movable primary drying furnace to separate volatiles before molding. This prevents recontamination.

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A method to convert waste tire pyrolysis carbon black into activated carbon with improved absorption properties. The method involves mixing the waste tire carbon black with a specific ratio of potassium hydroxide (KOH) activator, heating it to activate the carbon, and then washing and drying the resulting activated carbon. The optimized activation conditions and KOH ratio provide activated carbon with better absorbance compared to commercial activated carbon. This enables utilization of the waste tire carbon black as a precursor for activated carbon, reducing pollution and providing a valuable product from tire recycling.

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Recycling waste tires into valuable carbon black powder and granules for use in rubber, plastics, inks, and coatings. The process involves pyrolyzing waste tires in stages to create carbon material with low volatile content. The carbon is then ground into powder or formed into granules using binders like starch. The resulting powder has improved properties like smaller particle size, higher surface area, and lower PAH contamination compared to tire pyrolysis alone. The powder can replace virgin carbon black in applications like tires, improving sustainability and reducing waste.

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A method and apparatus for mixing recycled carbon black with standard carbon black prior to transport to prevent breakage of the granules during mixing. The mixing is done in a specialized apparatus with controlled conditions to prevent granule breakdown. The recycled carbon black is obtained by pyrolysis of a granular feedstock like shredded tires. The pyrolysis is done in multiple heating zones with long residence times to produce the desired carbon black particle size. The apparatus for mixing the recycled and standard carbon black has features like drying, cooling, and pelletizing sections to optimize granule properties for storage, transport, and processing.

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Upgrading pyrolyzed waste tire residue into carbon black for tires to enhance value and reduce disposal costs. The process involves mild pyrolysis of waste tires, followed by impregnation and washing steps to selectively extract unwanted components. The pyrolysis conditions of 600-800°C for 2-5 hours with nitrogen or CO2 gas removal helps maintain the carbon nature of the residue. Impregnating with acidic solutions and ultrasonic treatment removes impurities while retaining the carbon black component suitable for tire reinforcement.

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Method for preparing activated carbon from waste tire rubber using microwave pyrolysis and chemical treatment. The steps are: 1) Removing silt, oil, metal, and fiber from tires, drying, and grinding them into particles. 2) Pyrolyzing the tire particles in a microwave oven to collect the solid material. 3) Treating the collected material with hydrogen peroxide and drying it to get coke. 4) Heating the coke in a nitrogen atmosphere in a muffle furnace at 800-900°C. 5) Immersing the heated material in nitric acid, then potassium hydroxide, washing it, and drying it to get activated carbon.

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System for preparing activated carbon from waste tires using pyrolysis and gasification. The system involves a multi-step process to convert waste tires into activated carbon. It includes a pyrolysis furnace to break down the tires, a burner to generate combustion gases, a CO2 separator to isolate CO2, a fluidized bed to activate the pyrolyzed carbon, and additional equipment for cooling, purification, and heating. The system allows efficient, high-capacity production of activated carbon from waste tires while reducing environmental impacts.

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A low-cost, large-scale method for manufacturing carbon nanotubes using cracked carbon black as a carbon source. The method involves thermally cracking waste tire carbon black to produce higher strength cracked carbon black. This cracked carbon black is then surface treated, sieved, ground, and purified to prepare it for nanotube growth. This allows using the existing tire carbon black supply chain for nanotube production without the high cost of specialized carbon sources.

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A method to convert waste tires into carbon black, which is a key ingredient in rubber products. The method involves breaking down the tire rubber into smaller particles, then subjecting them to high temperatures in the absence of oxygen to produce carbon black. This allows recycling the carbon black content of tires instead of discarding it, reducing waste and resource consumption compared to producing new carbon black from petroleum sources.

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A method for producing activated carbon from waste tires using microwave vacuum pyrolysis. The process involves heating cleaned tire rubber pieces in a microwave vacuum oven to decompose them into gases, liquids, and solid carbon. The solid carbon is collected and further processed to make activated carbon. The microwave vacuum pyrolysis allows efficient and selective conversion of the tire rubber into carbon without high temperatures and long reaction times compared to conventional pyrolysis methods.

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System and method for preparing activated carbon using waste tires as a raw material. The system involves a pyrolysis furnace to convert tire waste into pyrolytic carbon, a magnetic separator to separate the metal from the carbon, a CO2 separation device to extract CO2 from the combustion flue gas, a fluidized bed to activate the carbon with CO2, and a cooling and purifying device to process the pyrolysis oil and gas. This closed-loop system uses pyrolysis gasification to convert tires into activated carbon while separating and recycling the metal and CO2.

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A shallow waste rubber pyrolysis process to extract and isolate high-value carbon black from pyrolyzed scrap tires. The process involves dissolving the pyrolyzed rubber in an extruder-water bath system to separate the carbon black from the rubber matrix. This shallow cleavage technique allows selective extraction of the carbon black without extensive oxidation or modification steps. The resulting carbon black has improved reinforcing properties compared to pyrolysis carbon black.

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A horizontal rotary pyrolysis process for converting waste tires into high quality carbon black. The process involves pyrolyzing crushed tire particles at lower temperatures and shorter times compared to conventional methods. It uses a horizontal rotary cracking device to mix and heat the tire particles. Activators containing epoxy, potassium hydroxide, and rosin are added to promote cracking and prevent ash formation. The lower temperature and shorter time avoids excessive carbon-carbon bond damage and sulfur retention for better carbon black quality.

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Low-temperature ammonia desulfurization of waste tires to prepare carbon black. The process involves treating the tire particles in a fluidized bed reactor with ammonia gas to desulfurize them. Then the particles are milled, magnetically separated, and further treated with an ammonia-desulfurizing agent. The treated particles are pyrolyzed at 100-200°C to form carbon black. This low-temperature process prevents excessive CC bond breaking and allows complete desulfurization without gas or fuel oil losses.

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Preparing low ash waste tire carbon black by a method that involves desulfurization, pyrolysis, and acid leaching steps to reduce ash content compared to conventional waste tire carbon black production. The method involves desulfurizing the waste tire rubber using a desulfurization agent, followed by pyrolysis to convert the rubber into carbon black. Finally, leaching the carbon black with an ammonium chloride solution to remove remaining ash.

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