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Tailings pool based on AOD slag treatment and stirring method

A technology of tailings and slag, which is applied in the field of metallurgical solid waste utilization, can solve the problems of AOD tailings deposition, blockage of equipment and pipelines, low recovery rate of AOD slag tailings, etc., and achieve improved stirring intensity, efficient comprehensive utilization, Promote the effect of effectively entering the classification and filter press link

Inactive Publication Date: 2017-08-11
HUATIAN ENG & TECH CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic treatment of AOD slag mostly adopts wet treatment methods, such as Zhangpu's "slow cooling-screening-rod mill-jigging" process, Fujian Desheng's "slow cooling-ball milling-shaking table" process, etc. , but this conventional wet treatment method all has the phenomenon of rapid deposition of AOD furnace tailings after the rod milling / ball milling process, resulting in a low recovery rate of AOD furnace tailings, and in severe cases, equipment and pipelines will be blocked

Method used

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  • Tailings pool based on AOD slag treatment and stirring method
  • Tailings pool based on AOD slag treatment and stirring method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] combine figure 1 , figure 2 , a tailings pond based on AOD slag treatment in the present invention includes a tailings pond, and tailings slurry is contained in the tailings pond, and a platform 2 is arranged on the tailings pond, and a platform 2 for treating the tailings slurry is arranged on the platform 2. Agitator for stirring and compressed air machine for feeding compressed air into the tailings slurry;

[0029] The agitator includes a stirring paddle and a drive motor 10 for driving the stirring paddle to rotate; the stirring paddle is arranged in the tailings slurry;

[0030] The gas outlet of the compressed air machine communicates with the gas inlet of the gas delivery pipe, and the gas outlet of the gas delivery pipe is arranged in the tailings slurry.

Embodiment 2

[0032] As the specific scheme of embodiment 1, in the present embodiment, the stirring paddle comprises the rotating shaft 12, and the rotating shaft 12 is provided with several layers of stirring impellers 13 along the circumferential direction; the air inlet of the rotating shaft and the air compressor air outlet connection;

[0033] The stirring impeller is a hollow structure, the cavity of the stirring impeller communicates with the rotating shaft 12, and several air outlet holes 16 are arranged on the stirring impeller. In this embodiment, the rotating shaft 12 is not only used as the rotating shaft of the agitator, but also used as a gas delivery pipe of the compressed air machine to deliver compressed air to the tailings slurry.

Embodiment 3

[0035] As a specific solution of Embodiment 2, the agitator in this embodiment also includes a bearing seat, the bearing seat is arranged on the platform 2, and the rotating shaft is connected with the transmission of the bearing seat; the driving motor 10 is vertically The vertical direction is arranged on the platform 2, and the driving motor is connected with the rotating shaft 12 through a gear set to drive the rotating shaft 12 to rotate.

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Abstract

The invention discloses a tailings pool based on AOD slag treatment and a stirring method. The tailings pool is designed mainly for slowing down the sedimentation rate of tailings. The tailings pool is included, tailings slurry is contained in the tailings pool, a platform is arranged on the tailings pool, a stirrer for stirring the tailings slurry and a compression air machine used for leading compressed air to the tailings slurry are arranged on the platform, the stirrer comprises a stirring paddle and a driving motor used for driving the stirring paddle to rotate, the stirring paddle is arranged in the tailings slurry, an air outlet of the compression air machine is communicated with an air inlet of a gas conveying pipe, and an air outlet of the gas conveying pipe is arranged in the tailing slurry. Compressed air is led into the tailings slurry, meanwhile, the stirrer is used for stirring the tailings slurry, the high-pressure compressed air enters the tailings pool to form bubbles, the bubbles float to improve the stirring strength of the tailings slurry, rapid deposition of the tailings in the process is avoided, and power stirring of the AOD furnace tailings in the tailings pool is achieved.

Description

technical field [0001] The invention relates to a tailing slag pool and a method based on AOD slag treatment, and belongs to the technical field of metallurgical solid waste utilization. Background technique [0002] In 2015, my country's crude stainless steel production reached 2156.22×10 4 t / a, the per capita consumption is about 16kg, basically reaching the per capita consumption level of developed countries. According to the estimation of 20% slag (including electric furnace, AOD slag, etc.) produced per 1 ton of stainless steel, the stainless steel slag in my country in 2015 was 431.24×10 4 t / a. [0003] According to statistics, the metal content in the slag is about 10%. Stainless steel slag contains precious and rare heavy metals such as nickel and chromium. If it is not handled properly, it may cause serious environmental pollution. Therefore, recycling the metals in stainless steel slag and realizing the recycling of stainless steel slag resources is an important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04
CPCC22B7/04Y02P10/20
Inventor 崔荣峰钱永辉
Owner HUATIAN ENG & TECH CORP MCC