A method for selectively separating a carbon-containing material from a mixture comprising a positive electrode and a negative electrode originating from electrochemical cells and/or accumulators, the method comprising the following successive steps: a) providing a mixture comprising a positive electrode and a negative electrode, each electrode comprising a current collector, an active material and a binder, the active material of the negative electrode being a carbon-containing material, preferably graphite, b) contacting the mixture comprising the positive electrode and the negative electrode with a separation solution, in the presence of ultrasound, the separation solution comprising a solvent and, optionally, additives, until selectively separating the carbon-containing material from the current collector of the negative electrode, the active material of the positive electrode remaining secured to the current collector of the positive electrode.

A method for selectively separating a carbon-containing material from a mixture comprising a positive electrode and a negative electrode originating from electrochemical cells and/or accumulators, the method comprising the following successive steps: a) providing a mixture comprising a positive electrode and a negative electrode, each electrode comprising a current collector, an active material and a binder, the active material of the negative electrode being a carbon-containing material, preferably graphite, b) contacting the mixture comprising the positive electrode and the negative electrode with a separation solution, in the presence of ultrasound, the separation solution comprising a solvent and, optionally, additives, until selectively separating the carbon-containing material from the current collector of the negative electrode, the active material of the positive electrode remaining secured to the current collector of the positive electrode.

The present application discloses the impurity removal method of silicate solid waste and its application. This method includes: (A) Heat and melt the silicate solid waste to be treated to form the melt, and stratify the melt during the reduction reaction; (B) An upper melt component obtained by the stratification is subjected to magnetic phase-induced crystallization to obtain a ferromagnetic solid; (C) The ferromagnetic solid goes through magnetic separation, and what remains is the solid waste after impurity removal. This impurity removal method can effectively reduce the main impurity content of the solid waste including iron oxide. The removed solid waste can be directly used for the preparation of high value-added materials such as insulating ceramics and micro-crystal glass.

The present application discloses the impurity removal method of silicate solid waste and its application. This method includes: (A) Heat and melt the silicate solid waste to be treated to form the melt, and stratify the melt during the reduction reaction; (B) An upper melt component obtained by the stratification is subjected to magnetic phase-induced crystallization to obtain a ferromagnetic solid; (C) The ferromagnetic solid goes through magnetic separation, and what remains is the solid waste after impurity removal. This impurity removal method can effectively reduce the main impurity content of the solid waste including iron oxide. The removed solid waste can be directly used for the preparation of high value-added materials such as insulating ceramics and micro-crystal glass.

In one embodiment, a method for processing polymeric waste materials into one or more products included: pyrolyzing a solid polymeric waste material, wherein the pyrolyzing includes: heating the solid polymeric waste material in the absence of oxygen to a temperature of 725° F. to 850° F. for a duration of 15 to 90 minutes; and thermochemically converting, in response to the heating step, at least some of the solid polymeric waste material into a first liquid product; separating the first liquid product from residual solids; separating a vapor stream from the vessel; and condensing at least a portion of the vapor stream into a second liquid product.

In one embodiment, a method for processing polymeric waste materials into one or more products included: pyrolyzing a solid polymeric waste material, wherein the pyrolyzing includes: heating the solid polymeric waste material in the absence of oxygen to a temperature of 725° F. to 850° F. for a duration of 15 to 90 minutes; and thermochemically converting, in response to the heating step, at least some of the solid polymeric waste material into a first liquid product; separating the first liquid product from residual solids; separating a vapor stream from the vessel; and condensing at least a portion of the vapor stream into a second liquid product.

A waste volume reduction processing method includes a volume reduction step of reducing volume of waste in a volume reduction furnace in which temperature is raised in stages multiple times, the waste being a mixture of organic waste containing plastic and inorganic waste containing metal material, the volume reduction step including a first volume reduction step of storing and heating the waste in the volume reduction furnace in which temperature is raised up to around 200° C. to be kept, the volume reduction furnace being sealed in an oxygen-free state or in a low-oxygen state, the organic waste being reduced in volume to 20% to 30% of original volume.

A waste volume reduction processing method includes a volume reduction step of reducing volume of waste in a volume reduction furnace in which temperature is raised in stages multiple times, the waste being a mixture of organic waste containing plastic and inorganic waste containing metal material, the volume reduction step including a first volume reduction step of storing and heating the waste in the volume reduction furnace in which temperature is raised up to around 200° C. to be kept, the volume reduction furnace being sealed in an oxygen-free state or in a low-oxygen state, the organic waste being reduced in volume to 20% to 30% of original volume.

A cleaning roller device is provided. The cleaning roller device comprises a transversely-arranged cleaning roller, a roller bearing device, and a roller driving device capable of driving the cleaning roller to rotate around the central axis of the cleaning roller on the roller bearing device, wherein a front-end central pipe and a rear-end central pipe are respectively arranged along the front-end central axis and the rear-end central axis of the cleaning roller and are respectively connected to rotary joints. The rotary joints are used for respectively connecting external pipelines communicated with a water source and a steam source; the front end of the cleaning roller is provided with a solid barrel fragment outlet and a barrel fragment outlet sealing cover, and the rear end of the cleaning roller is provided with a liquid outlet; a feed port is formed in the wall of the cleaning roller.

A cleaning roller device is provided. The cleaning roller device comprises a transversely-arranged cleaning roller, a roller bearing device, and a roller driving device capable of driving the cleaning roller to rotate around the central axis of the cleaning roller on the roller bearing device, wherein a front-end central pipe and a rear-end central pipe are respectively arranged along the front-end central axis and the rear-end central axis of the cleaning roller and are respectively connected to rotary joints. The rotary joints are used for respectively connecting external pipelines communicated with a water source and a steam source; the front end of the cleaning roller is provided with a solid barrel fragment outlet and a barrel fragment outlet sealing cover, and the rear end of the cleaning roller is provided with a liquid outlet; a feed port is formed in the wall of the cleaning roller.