Industrial byproduct gypsum calcining machine

Abstract

The invention belongs to the technical field of gypsum production, and particularly relates to an industrial byproduct gypsum calcining machine, which is characterized in that a movable plate is arranged in a machine body shell, the upper end of the movable plate is connected with a driving device output shaft, at least one sealing ring groove is formed in the periphery of the movable plate, a sealing ring is arranged in the sealing ring groove in an interference manner, a through hole is formed in the movable plate, the through hole communicates with the sealing ring groove and is connected with a gas device, a heat exchange pipeline is arranged at the lower end of the movable plate, a plurality of evenly-distributed fins with the heat conduction function are arranged on the heat exchangepipeline, the fins face the interior of the machine shell, and the heat exchange pipeline is connected with a steam generator. According to the invention, by sealing a calcining machine, heat is conveyed into the machine shell of the calcining machine through a heat exchange pipeline, and is provided in a heat exchange mode, and due to the arrangement of a movable plate in the machine shell, thespace where an industrial byproduct gypsum raw material is located can be changed, so that the time and space for calcining industrial byproduct gypsum are shortened, and the temperature for calciningthe industrial byproduct gypsum is increased.

Description

technical field [0001] The application belongs to the technical field of gypsum production, and in particular relates to an industrial by-product gypsum calciner. Background technique [0002] The statements in this section merely provide background technical information relevant to this application and do not necessarily constitute prior art. [0003] Coal-fired combustion in thermal power plants will produce a large amount of industrial by-product gypsum, and some chemical companies will also produce a large amount of industrial by-product gypsum in production, including desulfurization gypsum, phosphogypsum, etc. The main component of industrial by-product gypsum is CaSO 4 -2H 2 O, CaSO 4 -2H 2 O is calcined to form CaSO 4 -0.5H 2 O, making the industrial by-product gypsum form the building gypsum widely used in the construction industry, so as to produce plasterboard, plastering gypsum, gypsum cutting blocks, etc. [0004] When the current calciner is calcining ind...

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Problems solved by technology

[0004] When the current calciner is calcining industrial by-product gypsum, the size of the particles is not uniform when the industrial by-product gypsum is produced, and it cannot meet the supply requirements of raw materials. If such raw materials are directly used for calcining, the resulting building gypsum Various particles are unevenly distributed, resulting in brittle gypsum produced

[0005] In addition, the current calciner mainly uses stirring to distribute the materials inside the calciner, that is, the existing calciner includes a stirring shaft, which can only enhance the fluidity of the material, although to a certain extent it can ensure that the material The calcination is uniform, but there are still places that the stirring shaft cannot touch, which also affects the production of gypsum. In addition, the driving device of the stirring shaft is mostly installed on the top of the calciner, and the screw shaft directly transported to the calciner will be in contact with the stirring Therefore, the current screw shaft in the calciner will only transport the raw materials to one point of the calciner, which will cause the raw materials to be distributed unevenly inside the calciner, but aggregated and distributed, which is more likely to produce dead ends, resulting in The calcination machine does not calcine the raw materials uniformly, that is, the gypsum after calcination still contains a lot of water, and there is also the situation of uneven particle distribution

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