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A kind of aluminum ash deamination device and aluminum ash deamination process

A technology for aluminum ash and deamination, which is applied in the field of aluminum ash treatment, can solve the problems of high cost, difficult follow-up treatment, low efficiency of deamination of aluminum ash, etc., achieves the effect of simple operation, complete deamination reaction, and increased primary treatment capacity

Active Publication Date: 2022-08-09
四川科龙达环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above prior art, the present invention provides an aluminum ash deamination device and an aluminum ash deamination process to solve the problems of low deamination efficiency, high cost and difficult follow-up treatment of aluminum ash

Method used

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  • A kind of aluminum ash deamination device and aluminum ash deamination process
  • A kind of aluminum ash deamination device and aluminum ash deamination process
  • A kind of aluminum ash deamination device and aluminum ash deamination process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0039] An aluminum ash deamination process, comprising the following steps:

[0040] Add 3.5 tons of aluminum ash to the deamination device, add 0.025 tons of quicklime powder, 0.01 tons of sodium thiosulfate, add 0.7 tons of dedusting water, add 0.3 tons of cleaning water, open the high temperature exhaust valve, close the dust removal exhaust valve, and heat the parts The material was heated to 50°C, the material began to react violently, and a large amount of ammonia gas was discharged. After waiting for 10 minutes, the reaction was gentle. Continue to add 0.5 tons of dedusting water and 1.5 tons of new water. After the temperature rises to 70°C, there is no violent reaction. Close the dedusting and exhaust valve, the pressure rises to 0.1Mpa, partially open the pressure relief valve, and adjust the internal pressure to 0.15Mpa. After holding pressure reaction for 2.5 hours, open the dust removal and exhaust valve, close the high temperature exhaust valve, open the discharg...

Embodiment 2

[0042] An aluminum ash deamination process, comprising the following steps:

[0043] Add 2.5 tons of aluminum ash to the deamination device, add 0.015 tons of slaked lime powder, 0.005 tons of sodium sulfate, add 0.6 tons of dedusting water, add 0.2 tons of new water, open the high temperature exhaust valve, close the dust removal and exhaust valve, and the heating part will remove the material. When heated to 40°C, the material begins to react violently, and a large amount of ammonia gas is discharged. After waiting for 10 minutes, the reaction is gentle. Continue to add 0.5 tons of dedusting water and 0.7 tons of new water. After the temperature rises to 60°C, there is no violent reaction. Close the dedusting and exhaust valve, the pressure rises to 0.12Mpa, partially open the pressure relief valve, and adjust the internal pressure to 0.18Mpa. After holding pressure reaction for 1.5 hours, open the dust removal and exhaust valve, close the high temperature exhaust valve, ope...

Embodiment 3

[0045] An aluminum ash deamination process, comprising the following steps:

[0046] Add 3.8 tons of aluminum ash, 0.05 tons of stone powder, 0.015 tons of magnesium sulfate, 0.8 tons of dedusting water, 0.3 tons of cleaning water and 0.4 tons of new water to the deamination device, open the high temperature exhaust valve, close the dust removal exhaust valve, The heating part heats the material to 70°C, the material starts to react violently, and a large amount of ammonia gas is discharged. After waiting for 10 minutes, the reaction is gentle. Continue to add 0.6 tons of dust removal water and 1.2 tons of new water. After the temperature rises to 80°C, there is no violent reaction. Close the dust removal and exhaust valve, the pressure rises to 0.08Mpa, partially open the pressure relief valve, and adjust the internal pressure to 0.12Mpa. After holding pressure reaction for 1.5 hours, open the dust removal and exhaust valve, close the high temperature exhaust valve, open the ...

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Abstract

The present invention discloses an aluminum -gray device and aluminum ash downturn.The device includes a closed cylinder; an inlet hole, a dust removal valve, a high -temperature exhaust valve, a high -temperature exhaust valve, a pressure leakage valve, a water leakage valve, a drainage port on the outside of the outer part of the closed cylinder, and the outside of the closed cylinder is provided.Heating parts; the central shaft is installed on the axis of the closed cylinder, and the central axis is connected to the reducer; there is a rake teeth on the central axis, and the rake tooth leaves at the top of the rake teeth;In the enhanced board, the two adjacent enhanced boards can form a semi -circular arc structure; a scanning rod is installed in the same horizontal position rake tooth interval; there are two scanning rods installed in total, which is located in the two groups of rake teeth intervals.The depairing process is to control the reaction temperature and pressure of aluminum ash with catalysts through the depairing device, and to flexibly adjust the reaction conditions during the reaction process to transform the nitrogen in aluminum ash into ammonia to achieve the purpose of depair.

Description

technical field [0001] The invention belongs to the technical field of aluminum ash treatment, and particularly relates to an aluminum ash deamination device and an aluminum ash deamination process. Background technique [0002] In recent years, with the continuous development of the recycled metal industry, the utilization rate of scrap aluminum has also been continuously improved, and the output of aluminum ash has been increasing. According to the different content of metal aluminum in aluminum ash, it can be divided into primary aluminum ash and secondary aluminum ash. The aluminum slag removed from the smelting furnace is called primary aluminum ash, which is gray-white in appearance, mainly composed of a mixture of metal aluminum and aluminum oxide, and the aluminum content can reach 15% to 70%, also known as "white aluminum". Secondary aluminum ash is the waste after primary aluminum ash extraction of metal aluminum, the main components are alumina, aluminum nitride,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/70
CPCB09B3/00Y02P10/20
Inventor 张志刚尹帮红李伟
Owner 四川科龙达环保股份有限公司
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