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Process for recycling aluminum from waste machine parts

A technology for mechanical parts and aluminum recycling, applied in the direction of improving process efficiency, etc., can solve the problems of waste of resources, low recovery rate, high energy consumption, etc., and achieve the goal of reducing waste discharge, saving energy and cost, and improving the ecological environment Effect

Inactive Publication Date: 2016-07-27
TONGLING BAIRUI EQUIP PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is now in the initial stage of secondary aluminum development, the technology is not yet mature enough, the recovery rate is low, energy consumption is high, the cost is high, and the cycle is long. During the smelting process of waste aluminum, the removal of some waste aluminum containing iron and heavy metal impurities cannot meet the requirements. , the surface is severely oxidized, resulting in low output. In addition, the aluminum slag of the smelting paste is often discarded, resulting in a large waste of resources; in addition, in the current waste aluminum smelting and recycling process, the waste gas is directly discharged into the sky through the chimney, resulting in a large amount of sulfide. Harmful gases such as pollutants, and produce a large amount of carbon dioxide, causing environmental pollution, increasing the surface temperature and producing the greenhouse effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A process for recovering aluminum from waste mechanical parts, comprising the following steps:

[0019] (1) Classification of waste mechanical parts: firstly classify waste mechanical parts, stack them in grades, and then disassemble them to remove steel and other non-ferrous metal parts connected with waste mechanical parts;

[0020] (2) Separation: crush waste mechanical parts, and mechanized separation to obtain waste aluminum;

[0021] (3) Rough smelting: Send the waste aluminum into the smelting furnace for rough smelting. During the rough smelting, air and gas are introduced into the smelting furnace, and the air and gas are mixed at the air inlet. The rough smelting temperature is 600°C. The time is 2 hours;

[0022] (4) Refining: The molten aluminum roughly smelted in the smelting furnace is introduced into the refining furnace through the diversion groove. The relative position of the smelting furnace is higher than that of the refining furnace, so that the mo...

Embodiment 2

[0026] A process for recovering aluminum from waste mechanical parts, comprising the following steps:

[0027] (1) Classification of waste mechanical parts: firstly classify waste mechanical parts, stack them in grades, and then disassemble them to remove steel and other non-ferrous metal parts connected with waste mechanical parts;

[0028] (2) Separation: crush waste mechanical parts, and mechanized separation to obtain waste aluminum;

[0029] (3) Rough smelting: send the scrap aluminum material into the smelting furnace for rough smelting. During the rough smelting, air and gas are introduced into the smelting furnace, and the air and gas are mixed at the air inlet. The rough smelting temperature is 650°C. The time is 1.5 hours;

[0030] (4) Refining: The molten aluminum roughly smelted in the smelting furnace is introduced into the refining furnace through the diversion groove. The relative position of the smelting furnace is higher than that of the refining furnace, so ...

Embodiment 3

[0034] A process for recovering aluminum from waste mechanical parts, comprising the following steps:

[0035] (1) Classification of waste mechanical parts: firstly classify waste mechanical parts, stack them in grades, and then disassemble them to remove steel and other non-ferrous metal parts connected with waste mechanical parts;

[0036] (2) Separation: crush waste mechanical parts, and mechanized separation to obtain waste aluminum;

[0037] (3) Rough smelting: Send the waste aluminum into the smelting furnace for rough smelting. During the rough smelting, air and gas are introduced into the smelting furnace, and the air and gas are mixed at the air inlet. The rough smelting temperature is 700°C. The time is 1 hour;

[0038] (4) Refining: The molten aluminum roughly smelted in the smelting furnace is introduced into the refining furnace through the diversion groove. The relative position of the smelting furnace is higher than that of the refining furnace, so that the mol...

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PUM

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Abstract

The invention discloses a process for recycling aluminum from waste machine parts. The process comprises the steps that 1, the waste machine parts are classified; 2, separating is conducted; 3, primary smelting is conducted, specifically, the primary smelting temperature is 600-700 DEG C, and the primary smelting time lasts for 1-2 h; 4, refining is conducted, specifically, the refining temperature is 500-600 DEG C, and the refining time lasts for 0.5-1 h; 5, recycling is conducted, specifically, after refining is conducted, molten aluminum is obtained and subjected to casting molding through a continuous casting machine; obtained aluminum slag is cooled through an ash cooling barrel, and the cooled aluminum slag is supplied to a steel mill to be used as a smelting additive after being packed; and 6, smoke dust treatment is conducted, specifically, smoke dust is removed through a water curtain dedusting method. According to the process for recycling the aluminum from the waste machine parts, the recycling rate is high, the quality of the recycled aluminum is high, energy consumption is low, and the cost is low; and the period is short, the waste amount is little, and the discharging amount of waste is decreased.

Description

technical field [0001] The invention relates to the technical field of recycling mechanical parts, in particular to a process for recycling aluminum from waste mechanical parts. Background technique [0002] Mechanical parts are currently widely used in various industries. Waste mechanical parts contain a variety of metals. If they are discarded directly, it will cause a lot of waste and pollute the environment. As the most widely used metal among non-ferrous metals, aluminum has the advantages of light weight, strong durability and recyclability, and the aluminum industry is a high-energy-consuming industry, so it is particularly important to recycle aluminum from waste mechanical parts. Recycling aluminum can Reduce production costs and have good economic benefits. my country is now in the initial stage of secondary aluminum development, the technology is not yet mature enough, the recovery rate is low, energy consumption is high, the cost is high, and the cycle is long. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B21/06C22B9/10
CPCC22B7/001C22B9/103C22B21/062Y02P10/20
Inventor 何颜鹏
Owner TONGLING BAIRUI EQUIP PARTS CO LTD