The present disclosure relates to a spiral baffle system that can adjust the pitch of spiral baffles installed to be spaced apart along the longitudinal direction in the housing during the process of mixing and heating a treatment object inputted and transferred into the housing of the heating furnace.

The present disclosure relates to a spiral baffle system that can adjust the pitch of spiral baffles installed to be spaced apart along the longitudinal direction in the housing during the process of mixing and heating a treatment object inputted and transferred into the housing of the heating furnace.

A multifunctional indirectly heated rotary kiln is provided to perform pyrolysis, calcining, roasting, thermal decomposition, and gasification for a variety of organic and inorganic feedstocks. The kiln operates over a temperature range from 100 degrees to 1,800 degrees Fahrenheit, can run in continuous or batch mode, and allows either co-current or counter-current operation. A feedstock is fed into a kiln and the thermally treated product is extracted. A plurality of paddles is provided at an interior surface of the kiln to allow maximum heat uptake by reactants through extended time in contact with the interior kiln walls. Feed screw and extraction screw assemblies are provided on portable carts to facilitate component swapping when a component becomes full or empty.

A multifunctional indirectly heated rotary kiln is provided to perform pyrolysis, calcining, roasting, thermal decomposition, and gasification for a variety of organic and inorganic feedstocks. The kiln operates over a temperature range from 100 degrees to 1,800 degrees Fahrenheit, can run in continuous or batch mode, and allows either co-current or counter-current operation. A feedstock is fed into a kiln and the thermally treated product is extracted. A plurality of paddles is provided at an interior surface of the kiln to allow maximum heat uptake by reactants through extended time in contact with the interior kiln walls. Feed screw and extraction screw assemblies are provided on portable carts to facilitate component swapping when a component becomes full or empty.

A hydrogen decrepitating furnace for shortening of feeding and discharging time capable of feeding and discharging materials easily comprises a main frame, a heating furnace, electric furnace stands and electric furnaces, wherein the heating furnace and a driving mechanism for driving the electric furnaces to rotate are arranged on the main frame, the heating furnace is provided with a feed and discharge port and a valve for opening or closing the feed and discharge port, a gas control device is connected to a side corresponding to the feed and discharge port of the heating furnace, the lifting mechanism is able to lift the heating furnace to allow materials to be easily discharged from the hydrogen decrepitation furnace, the electric furnaces are correspondingly arranged on the electric furnace stands, and moving mechanisms for driving the electric furnaces to be opened or closed are arranged on the two electric furnace stands.

The present disclosure relates to the technical field of phosphogypsum dehydration treatment, and provides a device for harmless treatment of phosphogypsum by calcination using high-temperature ceramsite, including a rotary kiln, a first feeding unit, a second feeding unit and a sorting assembly, where the rotary kiln includes a first rotary kiln drum and a second rotary kiln drum; a first interlayer channel is formed between the first rotary kiln drum and the second rotary kiln drum, and a head end of the first interlayer channel is connected to a head end of the first rotary kiln drum; the first feeding unit is used to input high-temperature ceramsite into the first rotary kiln drum; the second feeding unit is used to input phosphogypsum into the first interlayer channel; the mixture in the first rotary kiln drum and the phosphogypsum in the first interlayer channel can exchange heat to dehydrate the phosphogypsum; the sorting assembly is used to sort the mixture output from the first rotary kiln drum to obtain calcined phosphogypsum. The present disclosure enables high calcination and dehydration efficiency of phosphogypsum, and can achieve low-carbon harmless treatment of phosphogypsum to obtain phosphorus building gypsum.

The present disclosure relates to the technical field of phosphogypsum dehydration treatment, and provides a device for harmless treatment of phosphogypsum by calcination using high-temperature ceramsite, including a rotary kiln, a first feeding unit, a second feeding unit and a sorting assembly, where the rotary kiln includes a first rotary kiln drum and a second rotary kiln drum; a first interlayer channel is formed between the first rotary kiln drum and the second rotary kiln drum, and a head end of the first interlayer channel is connected to a head end of the first rotary kiln drum; the first feeding unit is used to input high-temperature ceramsite into the first rotary kiln drum; the second feeding unit is used to input phosphogypsum into the first interlayer channel; the mixture in the first rotary kiln drum and the phosphogypsum in the first interlayer channel can exchange heat to dehydrate the phosphogypsum; the sorting assembly is used to sort the mixture output from the first rotary kiln drum to obtain calcined phosphogypsum. The present disclosure enables high calcination and dehydration efficiency of phosphogypsum, and can achieve low-carbon harmless treatment of phosphogypsum to obtain phosphorus building gypsum.

This application discloses a cathode material drying device and a cathode material drying production line. The cathode material drying device includes: a rotary kiln, where a kiln head and a kiln tail of the rotary kiln each are provided with a sealing structure and the rotary kiln can rotate relative to the sealing structure; and an exhaust system comprising an air inlet pipe, an air outlet pipe, and a first fan, where the air inlet pipe communicates with the kiln tail of the rotary kiln through the sealing structure; the air outlet pipe communicates with the kiln head of the rotary kiln through the sealing structure; and the first fan is arranged on the air inlet pipe and/or the air outlet pipe, so as to make an air flow direction in the rotary kiln opposite to a delivery direction of a cathode material.

This application discloses a cathode material drying device and a cathode material drying production line. The cathode material drying device includes: a rotary kiln, where a kiln head and a kiln tail of the rotary kiln each are provided with a sealing structure and the rotary kiln can rotate relative to the sealing structure; and an exhaust system comprising an air inlet pipe, an air outlet pipe, and a first fan, where the air inlet pipe communicates with the kiln tail of the rotary kiln through the sealing structure; the air outlet pipe communicates with the kiln head of the rotary kiln through the sealing structure; and the first fan is arranged on the air inlet pipe and/or the air outlet pipe, so as to make an air flow direction in the rotary kiln opposite to a delivery direction of a cathode material.