802 results about "Waste tires" patented technology

[Problem] To provide a method for efficiently producing a chemical product from a waste material containing waste tires by improving each step in a series of processes to realize long-term operation of the processes. [Solution] This method for producing a chemical product involves a pyrolysis step for obtaining, through pyrolysis of a crushed product of a waste material including waste tires, a first gas component, a pyrolysis oil, and a residual component, a low-temperature hydrogenation step for subjecting a raw material oil containing at least part of the pyrolysis oil to a low-temperature hydrogenation treatment at a temperature of 180°C-350°C to obtain a low-temperature hydrogenated oil, a high-temperature hydrogenation step for subjecting a raw material oil containing at least part of the low-temperature hydrogenated oil to a hydrogenation treatment at a temperature higher than that of the low-temperature hydrogenation treatment to obtain a second gas component and a high-temperature hydrogenated oil, a separation step for separating a naphtha fraction from other fractions through atmospheric distillation of an atmospheric distillation raw material oil containing crude oil and at least part of the high-temperature hydrogenated oil, and a steam cracking step for subjecting a steam cracking raw material oil containing at least part of the naphtha fraction and / or other fractions to a steam cracking treatment to obtain a chemical product, wherein the amount of the pyrolysis oil with respect to the total amount of the first gas component, the pyrolysis oil, and the residual component in the pyrolysis step is 40% by mass or more.

[Problem] To provide a method for efficiently producing a chemical product from waste tires by improving steps in a series of processes and also efficiently obtaining a carbide. [Solution] Provided is a method for producing a chemical product and a carbide, the method comprising: a thermal decomposition step for obtaining a first gas, a thermal decomposition oil and a residue through thermal decomposition of fragmented waste tires; a carbide recovery step for recovering a carbide from the residue; a low temperature hydrogenation step for subjecting a raw material oil containing at least a portion of the thermal decomposition oil to a low temperature hydrogenation treatment at a temperature of 180-350ºC to obtain a low temperature hydrogenated oil; a hydrocracking step for subjecting a raw material oil that contains at least a portion of the low temperature hydrogenated oil to a hydrocracking treatment at a temperature higher than that in the low temperature hydrogenation treatment so as to obtain a second gas, a light fraction having a boiling point of 350°C or lower and a heavy fraction having a boiling point of higher than 350°C; and a steam cracking step for steam cracking a steam cracking raw material oil that contains at least a portion of the light fraction so as to obtain a chemical product and a raw material for carbide production, which comprises a heavy fraction having a 10% distillation temperature of 190°C or higher. The thermal decomposition temperature in the thermal decomposition is 350-750ºC.

The present invention relates to the field of tire processing technology, in particular to an environmentally friendly processing device for recycling and utilizing waste tire rubber, comprising a crushing box, a first material guide block is provided at the lower left end of the crushing box, a first belt conveyor is provided on the first material guide block, a crushing assembly is provided inside the crushing box, a screening box is provided at the left end of the first belt conveyor, a disc screen assembly is provided inside the screening box, two support blocks are fixedly provided on the outer wall of the screening box in a symmetrical structure, a reflux block is installed at the lower end of the screening box, the reflux block is in an inclined structure, the lower right end of the reflux block is connected to the upper end of the crushing box, a second material guide block is provided at the lower end of the screening box, and a steel wire processing box is provided at one end of the second material guide block. It is convenient to crush and separate steel wire and rubber in waste tires, ensure the efficient separation of steel wire and rubber, improve the processing efficiency and crushing effect of waste rubber tires, improve the quality of recycled rubber, and provide strong technical support for the recycling and utilization of waste tires.

The invention relates to a waste tire cracking furnace, and belongs to the field of solid waste comprehensive utilization equipment, the waste tire cracking furnace comprises a cracking furnace body, the cracking furnace body is internally provided with a material stirring part used for turning over waste tires in the cracking furnace body, and the material stirring part is connected with a driving assembly driving the material stirring part to rotate; an opening is formed in one end of the cracking furnace body, a slag discharging device is connected to the opening of the cracking furnace body, the slag discharging device is used for blocking the opening in one side of the cracking furnace body, and a water inlet pipe penetrates through the slag discharging device and is slidably connected with the slag discharging device in an inserted mode. The waste tire treatment device has the effect of improving the waste tire treatment efficiency of the cracking furnace.

The invention discloses a cold-mixed and cold-laid ultrathin overlay asphalt mixture which is prepared from the following raw materials in parts by weight: 8-15 parts of rubber powder composite emulsified asphalt; 80 to 90 parts of aggregate; 0.3 to 0.5 part of polymer fiber; 0.5 to 1 part of an interface coupling agent; the invention also provides a construction process of the cold-mixed and cold-laid ultrathin overlay asphalt mixture. The rubber powder composite emulsified asphalt is obtained by emulsifying the composite modified asphalt prepared from the ground rubber powder of the waste tires and the SBS rubber, so that the performance index of the emulsified asphalt is greatly improved, and the bonding performance of a cold-mixed thin-layer asphalt mixture and an original pavement is ensured; in addition, by adding the polymer fibers, the structural strength and the crack resistance of the ultrathin overlay can be remarkably improved. The invention can significantly reduce energy consumption and environmental pollution, and has the advantages of noise reduction, environmental protection, low cost and the like.

The invention discloses a technology for manufacturing a thin film by recycling and calendering a polytetrafluoroethylene material, and belongs to the technical field of high polymer material recycling and processing, the technology for manufacturing the thin film by recycling and calendering the polytetrafluoroethylene material comprises the following steps: crushing waste products, and carrying out three-stage screening impurity removal and melt index detection; after being cleaned by supercritical carbon dioxide, the qualified material is mixed with industrial by-product filler, waste tire rubber powder and the like, low-temperature mixing is conducted through a double-screw extruder, and mixing parameters are automatically regulated and controlled through a tension sensor; performing calendaring forming by a five-roller calendaring unit, preheating the first two rollers, performing differential stretching by the middle three rollers, engraving a micro groove by the third roller, and controlling the thickness precision to be + / -3% by an online thickness gauge; the film is slit after being compounded according to requirements, and scrap edges are crushed and recycled. The method realizes efficient recovery of waste polytetrafluoroethylene, and has the advantages of thorough impurity removal, stable performance, environmental protection and energy saving.

The invention discloses a method for preparing activated carbon by using waste tire pyrolytic carbon black, which comprises the following steps of: selectively and dynamically screening and removing magnetic impurities, namely dynamically screening a pyrolytic product through an airflow grading device, separating out high-purity carbon black particles with the particle size of less than 10 microns, and removing metal impurities and residual steel wires by using a magnetic separation technology to obtain the activated carbon. And the purity of the carbon black reaches 95% or above. Therefore, the pore structure is optimized through combination of a wet method and high-temperature activation, the pore distribution is further maintained, regulated and controlled through freeze drying and solvent heat treatment, the specific surface area of the finally prepared activated carbon reaches 1500-2000 m < 2 > / g, and the pore volume retention rate reaches 90% or above; the technology not only effectively solves the problems of insufficient carbon black purity, unstable pore structure and high energy consumption in the prior art, but also remarkably improves the adsorption performance and chemical stability, so that the carbon black is widely applied to the fields of water treatment, gas adsorption, catalyst carriers and the like, and has the outstanding advantages of high efficiency, low consumption and environmental protection.

The invention discloses a multi-solid waste interface collaborative optimization regenerant and a preparation method of a regenerated asphalt mixture thereof, and belongs to the technical field of road material regeneration. In order to solve the problems that a traditional single regenerant is insufficient in performance improvement, low in solid waste utilization rate and high in carbon emission, citric acid is used for activating steel slag powder to enhance the reactivity of the steel slag powder and fatty acid methyl ester (FAME) ester groups, and a silane coupling agent is used for modifying waste tire rubber powder to improve the interfacial compatibility of the waste tire rubber powder with steel slag and asphalt; lignosulfonate stabilizes FAME, reduces interfacial tension of FAME and improves dispersibility of FAME, and then three-component interface collaborative optimization is achieved. According to the invention, the rigid reinforcing effect of the steel slag powder, the elastic recovery characteristic of the rubber powder and the regeneration function of the FAME are fully utilized, and a gradient temperature mixing process is combined to form a'rigid reinforcing-elastic buffering-dynamic regeneration 'synergistic mechanism. The composite regenerant can recover the viscosity, rheology and other characteristics of the aged asphalt, improve the high and low temperature and other comprehensive pavement performance of the regenerated asphalt mixture, and achieve the purposes of multi-element solid waste recycling and low carbonization.

The invention provides a composite modified asphalt and a preparation method thereof, belonging to the technical field of polymer materials, wherein the composite modified asphalt contains SBS modified asphalt, modified tire rubber powder, epoxy asphalt, SBR, high modulus anti-rutting agent, asphalt warm mix agent, maleic acid resin, rubber softening oil, ethylhexyl stearate, isopropyl stearate, etc.; SBS modified asphalt is modified by AH-110 asphalt, AH-90 asphalt and AH-70 asphalt through SBS modifier, and calcium stearate, isopropyl stearate, asphalt warm mix agent, etc. are also added; modified tire rubber powder is obtained by using waste tire rubber powder as raw material, and surface composite coating modification is performed by basalt fiber, silica ash and AH-130 asphalt powder. Various components are melted and prepared by blending, and the composite modified asphalt has good high temperature stability, low temperature crack resistance, fatigue resistance and water damage resistance, and better adapts to the use environment of viaducts.

The utility model discloses a waste tire stacking device which comprises a base, a supporting table and a vertical pipe. The base is a fixed platform, the four corners of the base are each provided with a counterbore to form a locking hole, the center of the base is provided with a circular embedded position, a supporting table of a disc structure is embedded in the embedded position, the center of the supporting table is vertically provided with a rod-shaped vertical pipe, and the center of the bottom of the supporting table is provided with a positioning column of a cylindrical structure. A cylindrical cavity used for containing the positioning column is formed in the bottom of the center of the embedded position of the base to form a positioning cavity, and the supporting table is embedded in the positioning cavity through the positioning column to complete center positioning. The tire stacking device has the beneficial effects that stacked tires can be prevented from slipping off from a high position; marks on the tire can be conveniently inquired; unified transfer can be achieved through a forklift and a crane.

The invention relates to the technical field of production of environment-friendly materials, in particular to a production device and method of an environment-friendly asphalt mixture. The production device comprises a reaction kettle, a driving pipe is rotationally connected into the reaction kettle, a driving shaft is synchronously and reversely connected into the driving pipe in a transmission mode, a kettle cover is connected to the top of the reaction kettle, a crushing assembly, a first material preparation assembly and a second material preparation assembly are installed on the kettle cover, and the second material preparation assembly communicates with the first material preparation assembly. A waste gas treatment assembly is connected to the first material preparation assembly, a stirring assembly and an electric heating assembly are arranged in the reaction kettle, and a discharging assembly is arranged at the bottom of the reaction kettle. The waste tires are used as main raw materials, accumulation pollution of the waste tires is reduced, waste is converted into valuable building materials, and resource recycling is achieved. Meanwhile, the waste gas treatment device runs in the whole process, produced waste gas is effectively purified, pollution to the atmospheric environment is reduced, and the environment protection concept is comprehensively practiced from raw materials to the production process.

The invention provides a tire recycling method, a storage medium, an electronic device and a computer product program.The tire recycling method comprises the steps that waste tires are obtained and pretreated, and waste to be recycled is obtained; adding a first set amount of the to-be-recycled waste, a first set concentration of a solvent, a second set amount of a functional compound and a third set amount of a catalyst into an intermittent reaction kettle, and carrying out chemical reaction under a first set condition to obtain a first product system; and carrying out post-treatment on the first product system to obtain the product, wherein the first set condition is as follows: the reaction time is 1-6 hours, and the reaction temperature is 80-120 DEG C, so that the problem that the desulfurized rubber is difficult to serve as a raw material of a high-performance rubber product due to breakage of molecular chains and expansion of molecular weight distribution of the desulfurized rubber in the prior art is solved.

The present invention relates to the field of asphalt modification technology, and more particularly to a modified asphalt composite material, a preparation method and its application in ultra-thin wearing layer, including the following parts by mass of raw materials: 4 6 parts of SBS, 3 5 parts of LDPE, 3 5 parts of epoxy castor oil, 2 4 parts of octamercapto POSS modified wood fiber, 1 3 parts of antifreeze agent, 0.1 0.2 parts of mixed catalyst, 6 10 parts of modified asphalt, 5 8 parts of waste tire rubber powder, 100 parts of basalt wear-resistant aggregate; the antifreeze agent is mixed by (0.7 0.9) with AB modified mesoporous copper sulfide, ILs GO, and bisaldehyde PEG in a mass ratio of (0.2 0.3) : (1); the modified asphalt is mixed and kneaded by 10 parts of petroleum asphalt and 0.6 1.2 parts of tetraallylsilane. The modified asphalt composite material prepared by the present invention has good anti-freeze cracking performance, and has certain intrinsic self-repairing performance.

The invention provides a waste tire pyrolysis device, system and method, and relates to the technical field of waste tire treatment.The waste tire pyrolysis device comprises a pyrolysis chamber and a high-temperature flue gas unit, and the pyrolysis chamber is provided with a heating area, a first pyrolysis area and a second pyrolysis area which are sequentially connected in the extending direction of the pyrolysis chamber; the temperature of the heating area, the temperature of the first pyrolysis area and the temperature of the second pyrolysis area are sequentially increased; each of the heating area, the first pyrolysis area and the second pyrolysis area is provided with a flue gas inlet, and the high-temperature flue gas unit is communicated with the flue gas inlets so as to supply heat to corresponding sections. The waste tire pyrolysis energy consumption can be effectively reduced, and the waste tire pyrolysis degree is ensured.

The invention belongs to the technical field of solid waste resource utilization, and particularly relates to a production process for producing low-sulfur marine fuel oil through waste rubber tire hydro-liquefaction, which comprises the following steps: (1) mixing oil slurry, waste tire rubber powder and a catalyst to obtain a mixture, enabling the mixture to pass through a swelling preheater, and enabling the mixture and hydrogen to enter a slurry bed reactor for hydro-liquefaction, the liquefied intermediate product passes through a high-pressure separator, hydrogen obtained through separation enters a fixed bed hydrofining device, and obtained liquid enters a rectifying tower through a pressure reducing valve; (2) feeding a liquid product at the bottom of the rectifying tower and hydrogen into a fixed bed hydrofining device; and (3) carrying out gas-liquid separation on the fixed bed hydrofining product, wherein the liquid obtained by the gas-liquid separation is the low-sulfur marine fuel oil. According to the invention, waste tire rubber powder and slurry oil are used as raw materials, the liquefaction of waste rubber tires is realized in high-pressure hydrogen and high-temperature environments, and a fixed bed hydrofining device is combined to further reduce the content of sulfur atoms so as to produce the low-sulfur fuel oil for ships.

The invention relates to the field of modified asphalt mixtures, and provides an SBS / waste tire rubber powder composite modified asphalt mixture and a preparation method thereof. The SBS / waste tire rubber powder composite modified asphalt mixture comprises coarse aggregate, fine aggregate, mineral powder, an SBS modifier, modified waste tire rubber powder, a composite bio-based silane coupling agent and matrix asphalt, wherein the modified waste tire rubber powder is obtained through interface pre-modification; according to interface pre-modification, sulfur-sulfur cross-linking bonds in rubber powder are selectively broken through a regeneration activating agent; enabling the surface of the waste tire rubber powder to be self-assembled through an interface guiding agent to form a nano interface layer; the high-temperature stability, low-temperature crack resistance, water stability and aging resistance of the SBS / waste tire rubber powder composite modified asphalt provided by the invention are remarkably improved, and the SBS / waste tire rubber powder composite modified asphalt is green, environment-friendly and high in fatigue self-repairing capability.

Provided is a method for producing chemical products, including: a pyrolysis step of obtaining a first gas fraction, a pyrolysis oil, and a residual fraction by pyrolysis of a crushed material of a waste material including waste tires; a hydrogenolysis step of obtaining a second gas fraction, a light fraction with a boiling point of 350° C. or lower, and a heavy fraction with a boiling point higher than 350° C. by hydrogenolysis of a raw material oil containing at least a part of the pyrolysis oil; and a steam-cracking step of obtaining a chemical product by steam cracking of a steam-cracking raw material oil containing at least a part of the light fraction.

The invention relates to a high-damping shock-absorption anti-collision waste tire ecological retaining wall and an accident alarm system thereof. Staged energy absorption and impact force dissipation are achieved through a three-stage energy dissipation damping structure. A first-stage damping module conducts elastic deformation and friction absorption kinetic energy through waste tires filled with ceramsite. The secondary damping module is further compressed and deformed by a spiral spring group and ceramsite so as to dissipate impact force; the three-stage module disperses residual stress through geometric deformation of a coupling structure of a U-shaped damper and ceramsite, the impact resistance is remarkably improved, and the counter-acting force to a vehicle is reduced. An intelligent monitoring and early warning system powered by solar energy is integrated, the system comprises the thin film array pressure sensor, the buzzer alarm and the wireless communication module, collision data can be collected in real time, the buzzer alarm is triggered when abnormal pressure is detected, and rear-end collision accidents are effectively reduced. Vine plants can be planted in the retaining wall, the water retention characteristic of ceramsite is combined, the greening function is achieved, and the ecological environmental protection effect is enhanced.

The invention relates to the field of waste tire thermal cracking, and discloses a waste tire thermal cracking treatment device which comprises a heating cavity, mounting holes are formed in the two sides of the heating cavity, the interiors of the two mounting holes are jointly and rotationally connected with a thermal cracking cavity, and the interior of the thermal cracking cavity is fixedly connected with an annular filter screen plate. A circular hole is formed in one end of the thermal cracking cavity, a connecting pipe is fixedly connected to the interior of the circular hole, and a flapping mechanism is arranged at one end of the connecting pipe. According to the waste tire thermal cracking treatment device, the driving mechanism drives the thermal cracking cavity and the connecting pipe to rotate synchronously, and the stirring rods on the inner wall of the thermal cracking cavity can turn over tire materials, so that uniform heating is ensured; the connecting pipe drives the beating plate to continuously beat the annular filter screen plate, carbon black attached to the steel wires after pyrolysis is shaken off, the carbon black falls into the cavity bottom through the filter screen holes, the steel wires are intercepted by the filter screen, and separation of the carbon black and the steel wires is achieved.

The invention relates to the technical field of waste tire recovery, in particular to a method and a system for preparing biological aviation fuel by hydrogenation of waste tire pyrolysis oil, a pretreatment unit is used for performing multi-stage filtration and preheating treatment on the waste tire pyrolysis oil; the hydrogenation reaction unit is used for carrying out hydrogenation reaction and shallow cracking reaction on the pretreated waste tire pyrolysis oil; the separation and purification unit comprises a hot high-pressure separator, a dechlorination reactor, a cold high-pressure separator, a hot low-pressure separator and a cold low-pressure separator, and is used for carrying out dechlorination reaction and gas-oil-water separation treatment on a product of the shallow cracking reaction; the circulating hydrogen unit is used for providing mixed hydrogen for the system; and the fractionation unit is used for fractionating the product separated by the separation and purification unit to obtain the biological aviation fuel. According to the method, the waste tire pyrolysis oil is converted into the biological aviation fuel by adopting a series hydrogenation process, so that the problem of waste tire treatment is solved, and high-value utilization of resources is also realized.

[Problem] To provide a method that, by improving each step in a series of processes, can efficiently produce chemical products from waste tire-containing waste materials. [Solution] The chemical product production method comprises: a pyrolysis step for obtaining a first gas fraction, a pyrolysis oil, and a residue by pyrolyzing a pulverized material from a waste tire-containing waste material; a low-temperature hydrogenation step for obtaining a low-temperature hydrogenated oil by subjecting a starting oil containing at least a portion of the pyrolysis oil to a low-temperature hydrogenation treatment at 180°C to 350°C; a hydrocracking step for subjecting a starting oil containing at least a portion of the low-temperature hydrogenated oil to a hydrocracking treatment at a temperature higher than that of the low-temperature hydrogenation treatment, to obtain a second gas fraction, a light fraction having a boiling point of not more than 350°C, and a heavy fraction having a boiling point above 350°C; and a steam cracking step for subjecting a steam cracking starting oil containing at least a portion of the light fraction to a steam cracking treatment to obtain a chemical product, wherein the amount of the pyrolysis oil in the pyrolysis step is at least 40 mass% with reference to the total amount of the first gas fraction, pyrolysis oil, and residue.

The invention provides an upgrading and purifying method for waste tire pyrolysis carbon black, and belongs to the technical field of upgrading, purifying and high-value utilization of waste tires and waste rubber pyrolysis carbon black. The upgrading and purifying method comprises the following steps: carrying out wet magnetic separation on waste tire pyrolysis carbon black to obtain pyrolysis carbon black subjected to magnetic separation; mixing the cracked carbon black subjected to magnetic separation with hydrobromic acid for acid leaching to obtain first acid leaching filtrate and a first carbon black product; adding zinc particles into the first acid leaching filtrate to obtain second filtrate; evaporating and crystallizing the zinc bromide solution to obtain zinc bromide; zinc bromide is prepared into heavy liquid, the first carbon black product is subjected to reselection, and a pure carbon black product and silicon dioxide tailings are obtained; introducing hydrogen sulfide gas into the ferric ion solution for purification and absorption to obtain sulfur and a third filtrate; and the third filtrate is subjected to electrolytic regeneration, and a regenerated ferric ion solution and hydrogen are obtained after electrolytic regeneration is finished. According to the method, the acid leaching byproduct zinc bromide is used as a reselection medium, and resource recycling is achieved while efficient separation and impurity removal are achieved.

The invention provides a light-weight automobile appearance decorating part added with recycled waste and a forming process of the light-weight automobile appearance decorating part, and belongs to the technical field of automobile part manufacturing. The preparation method comprises the following steps: mixing a core layer melt containing polypropylene recycled after consumption, waste tire rubber and a styrene-ethylene-butylene-styrene block copolymer with a supercritical fluid to form a uniform dispersion; after an acrylonitrile-styrene-acrylate copolymer surface membrane is formed in a mold cavity, injecting the uniform dispersion to drive the membrane to extend and fill; and gas is induced to generate heterogeneous nucleation on the surfaces of the waste tire rubber particles through pressure relief and grow into bubbles. On the premise that the surface glossiness is not degraded, light weight and high toughness of the appearance decorating part and efficient utilization of renewable resources are achieved.

The invention provides a method for preparing pigment carbon black from waste tires, which solves the problems of low product quality and resource waste in traditional waste tire treatment by optimizing a synergistic process of thermal cracking, oxidation modification, pyrolysis oil carbonization and tail gas closed-loop utilization. The method comprises the following specific steps: crushing the waste tires into rubber powder, and performing thermal cracking to generate a carbon residue and oil-gas mixture; carrying out magnetic separation, grinding and oxidation treatment on the carbon residues to generate oxidized carbon black; fractionating and refining the pyrolysis oil, mixing with carbon black oil, and spraying into a carbon black reaction furnace to generate carbon black; and finally, mixing and granulating the two parts of carbon black to prepare the pigment carbon black. The specific surface area of the prepared pigment carbon black reaches 80-200 m < 2 > / g, the coloring strength is 80-120%, the ash content is smaller than or equal to 18%, and the pigment carbon black can be applied to color master batches and black plastic products by limiting thermal cracking conditions, oxidation conditions and the ratio of mixed oil. The tail gas is recycled after being dedusted and purified, so that efficient cyclic utilization of resources is realized.

The invention discloses nano-composite high-viscosity and high-stability modified asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. The modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 3 to 10 parts of star-shaped SBS (Styrene Butadiene Styrene), 5 to 25 parts of waste tire rubber powder, 2 to 6 parts of C5 / C9 petroleum resin, 2 to 8 parts of naphthenic oil, 0.1 to 0.5 part of sulfur, 1 to 3 parts of organic montmorillonite, and 0.5 to 2 parts of optional maleic anhydride grafted polypropylene and / or 0.1 to 0.5 part of silane coupling agent. The core of the preparation method is that through a three-stage process of swelling and nano dispersion, development and interface reaction and cross-linking stabilization, the technical problems of poor compatibility and easy segregation of an SBS / rubber powder composite system are fundamentally solved by utilizing the physical barrier effect of a nano sheet layer and the synergistic effect of vulcanization / interface chemical bonding. The obtained product has ultrahigh viscosity (dynamic viscosity gt at 60 DEG C, 80000 Pa.s), excellent storage stability (segregation error 1t at 48 hours, 2.0 DEG C) and excellent aging resistance, and the comprehensive performance of the product is far better than that of the prior art.

The utility model belongs to the technical field of waste tire treatment, and particularly relates to a dicing all-in-one machine suitable for waste rubber pretreatment, which comprises a support frame, two symmetrically arranged mounting frames I are fixedly connected to the top end of the support frame, and a conveying belt I for conveying waste tires is arranged between the two mounting frames I; a smashing box is arranged on one side of the bottom of the conveying tail end of the first conveying belt, and auxiliary mechanisms are arranged on the two sides of the first mounting frame. The conveying space of the first conveying belt can be adjusted according to tires of different sizes, so that the stability and safety of the tires in the conveying process are guaranteed, the distance between the positioning plates is adjusted, the discharging speed of the tires can be controlled, it is guaranteed that the tires enter the crushing box orderly and stably, stacking of the tires in the crushing box is avoided, and the conveying efficiency is improved. And the crushing efficiency is improved, tire conveying, centering adjustment, falling prevention, discharging speed control and fragment conveying are integrated, and the automation degree and efficiency of waste rubber pretreatment are improved.

The utility model relates to the technical field of dust removal equipment, and discloses a waste tire rubber powder preparation device with a dust removal device, which comprises a dust suction device, a screen body is arranged below the dust suction device, a rubber crusher is arranged on the side surface of the screen body, a cleaning device is arranged in the dust suction device, and a dust removal device is arranged in the dust suction device. A limiting device is arranged on the side face of the cleaning device, a collecting frame is arranged in the cleaning device, the dust suction device is composed of a dust suction hood, a connecting pipe, a barrel, a filter screen, a first frame and a fan, and the dust suction hood is arranged at the top of the screen body. According to the waste tire rubber powder preparation device with the dust removal device, dust on the surface of a filter screen can be cleaned through a driving motor and a cleaning brush, the dust can enter a water tank, a water pump is started, water in the water tank can be transferred into a rectangular pipe through a water inlet pipe and a water outlet pipe, and the water is atomized and sprayed out through an atomizing nozzle; and dust can be subjected to dust falling treatment, and the dust removal effect is good.

The utility model relates to a carbon black and steel wire separation device suitable for vertical waste tire cracking, and belongs to the technical field of solid waste treatment. Comprising a carbon black and steel wire separation device body, a curved kick-out device, a filter screen, a carbon black discharge port, a first sealing valve, a carbon black storage tank, a second sealing valve, a water seal tank, a falling pipe and a steel wire discharge port. The carbon black and steel wire separation device suitable for vertical waste tire cracking is simple and reasonable, carbon black and steel wires of a vertical cracking furnace can be effectively separated easily, continuous operation of the vertical rotary cracking furnace is further achieved, wide application and popularization are facilitated, and the carbon black and steel wire separation device is suitable for separation of carbon black and steel wires produced by the cracking furnace for waste tires.

The invention relates to a roundness detection method, a roundness detection system, a roundness detection device, a medium and electronic equipment. The method comprises the following steps: acquiring three-dimensional contour data of a circle of a tire on line, and processing the three-dimensional contour data to obtain three-dimensional data representing a circle of tire area; data of corresponding positions needing to be detected are extracted from the data of the circle of tire area, the distances between all adjacent space points in the data are calculated, all the distances are summed, and the sum value is the tire perimeter; the maximum value and the minimum value representing the tire thickness are extracted from the data of the circle of tire area, and a surface run-out value is obtained after processing; and judging the roundness of the tire according to the perimeter and the surface runout value of the tire. Compared with the existing manual measurement technology, the device has the following remarkable advantages that unqualified tires can be effectively screened out, the waste tire rate is reduced, and the tire forming quality is improved.

The invention relates to the technical field of solid waste resource utilization and building materials, in particular to magnesium slag-based aggregate and a preparation method thereof. According to the specific technical scheme, the industrial magnesium slag is ground into powder; performing surface activation and organic-inorganic hybrid coating modification on the waste tire rubber powder; grading and mixing the magnesium slag powder, the modified rubber powder and a chemical foaming agent to obtain a composite dry material; mixing and granulating the composite dry material and a special bio-based composite cementing solution; and finally, the raw material balls are placed in an alkaline carbon dioxide-rich atmosphere for low-temperature carbonization maintenance. The bio-based cementing solution is stably cured through mechanisms such as ionic crosslinking, mineralization induction and organic-inorganic network interpenetration. The obtained aggregate has a compact shell structure, the bulk density is 650-850 kg / m < 3 >, the cylinder compressive strength is 6-12 MPa, the water absorption rate is lower than 10%, the impact toughness is excellent, efficient synergistic utilization of various solid wastes is achieved, high-temperature sintering is not needed in the process, and low carbon and energy saving are achieved.