Raw material treatment system for rotary hearth furnace, and process thereof

A raw material processing and rotary hearth furnace technology, which is applied in the rotary hearth furnace raw material processing system and its process field, can solve the problems of stable raw material system production and increased process energy consumption, so as to avoid unsmooth blanking, improve production stability, and save The effect of water resources

Pending Publication Date: 2019-06-21
马钢集团设计研究院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art that sludge drying in the raw material treatment of the rotary hearth furnace affects the production stability of the raw material system, and the technological process of adding water after dehydration increases the energy consumption of the process, the present invention provides a raw material treatment system for the rotary hearth furnace and its craft

Method used

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  • Raw material treatment system for rotary hearth furnace, and process thereof
  • Raw material treatment system for rotary hearth furnace, and process thereof
  • Raw material treatment system for rotary hearth furnace, and process thereof

Examples

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Embodiment 1

[0037] A kind of rotary hearth furnace raw material processing system of the present embodiment, such as figure 1 As shown, it includes the ash receiving device 100 and the sludge receiving device 200 in parallel with the process, and the mixing device 300 and the ball forming device 400 arranged in sequence in accordance with the process; the ash receiving device 100 and the sludge receiving device 200 After receiving the corresponding materials, they are sent to the mixing device 300 for mixing, and after mixing, they are transferred to the ball forming device 400 for ball forming processing.

[0038] In the raw material treatment system of the rotary hearth furnace of this embodiment, by feeding the ash receiving device 100 and the sludge receiving device 200 in parallel to the mixing device 300, the moisture content of the sludge in the sludge bin 15 is controlled at 20%-30%, and The sludge weight ratio in the mixing device 300 is 20%-50%, the sludge drying system of the p...

Embodiment 2

[0040] A kind of rotary hearth furnace raw material processing system of the present embodiment, the specific structure is basically the same as embodiment 1, and the improvements are as follows: figure 2 As shown, the ash receiving device 100, the sludge receiving device 200 and the mixing device 300 are respectively equipped with an ash batching device 150 and a sludge batching device 250; the ash receiving device 100 includes several vertical batching bins 4; The ashes batching device 150 includes a batching belt conveyor 9 arranged below the vertical batching bin 4; each of the vertical batching bins 4 stores different ash materials, and various ash materials are classified and temporarily stored as 4 in this embodiment. Each of the vertical batching bins 4 stores different ashes, and various ashes are classified and temporarily stored, such as zinc-containing dust removal ash and binder, and zinc-containing dust removal dust includes blast furnace dust removal dust, conve...

Embodiment 3

[0043] A raw material processing system for a rotary hearth furnace in this embodiment has the same basic structure as that in Embodiment 2, and the improvement is that a slide valve 6 and a star-shaped ash discharge valve 7 are provided at the bottom outlet of the vertical batching bin 4, facing A batching scale 8 is also arranged below the star-shaped ash unloading valve 7. After the batching scale 8 is batched, the material is dropped to the batching belt machine 9, so as to facilitate the feeding, weighing and conveying of the ash according to the ratio; the bottom of the sludge bin 15 The arch-breaking carriage 16 is provided to avoid problems such as unsmooth feeding and blockage of the sludge bin 15. A feeder 17 is installed below the bottom outlet of the sludge bin 15, and the feeder 17 discharges the material to the screw feeder scale 18. The screw feeding scale 18 communicates with the sludge conveying pump through pipelines, which is convenient for sludge feeding, co...

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Abstract

The invention discloses a raw material treatment system for a rotary hearth furnace, and a process thereof, and belongs to the technical field of rotary hearth furnaces in the metallurgical industry.The raw material treatment system for the rotary hearth furnace comprises an ash receiving device, a sludge receiving device, a mixing device and a balling device, wherein the working procedures of the ash receiving device and the sludge receiving device are paratactic, and the mixing device and the balling device are arranged according to the working procedures in sequence subsequently; the ash receiving device and the sludge receiving device receive corresponding materials separately, and then the materials are fed into the mixing device for mixing; and the mixed materials are conveyed intothe balling device for balling processing. The materials are fed into the mixing device through the ash receiving device and the sludge receiving device in parallel, so that a sludge drying system inthe prior art can be cancelled, thereby cancelling the technological process of adding water after sludge drying; sludge is directly added to the mixing device, and mixed with ash uniformly; and the production stability of a raw material system is improved, and secondary environmental pollution in the sludge drying process is avoided.

Description

technical field [0001] The invention belongs to the technical field of rotary hearth furnaces in the metallurgical industry, and in particular relates to a rotary hearth furnace raw material processing system and a process thereof. Background technique [0002] Most of the zinc in the zinc-containing raw materials used in the iron and steel production process enters the iron-containing dust and sludge, and as the amount of galvanized scrap steel continues to increase, the zinc content of metallurgical solid waste is getting higher and higher. Due to the high content of iron in dust and sludge, it is a valuable renewable resource. According to the national resource utilization and environmental protection policies, as well as the concept of circular economy, these iron-containing dust and sludge should be recycled after treatment. However, recycling needs to solve the problem of zinc enrichment, because the continuous enrichment of zinc will lead to poor furnace conditions a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/24
Inventor 程学祥黄智光朱兴华王昭君周灿霞冯长英
Owner 马钢集团设计研究院有限责任公司
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