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Method for recycling magnesium alloy scraps

A technology for magnesium alloys and crushed materials, which is applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of structural performance discount of magnesium alloy materials, difficult to remove impurities in secondary casting, and limited application fields, etc. Cost-effective, high blocking strength, stable blocking effect

Inactive Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical measure turns magnesium alloy waste into treasure and realizes recycling and reuse, the cost of smelting is not only relatively high, but also the impurities in the secondary casting are difficult to remove, which leads to the formation of magnesium alloy materials. The structural performance is greatly reduced, and the applicable field is limited
[0004] For a long time, the magnesium alloy production and processing industries have been trying to explore a method of reusing magnesium alloy scraps that is thorough, easy to operate, economical, profitable, and cost-effective, but so far it has failed

Method used

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  • Method for recycling magnesium alloy scraps
  • Method for recycling magnesium alloy scraps

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Experimental program
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Effect test

Embodiment 1

[0015] The present invention comprises the following steps:

[0016] Step 1. Collect magnesium alloy scraps with magnesium content ≥ 85%. These magnesium alloy scraps mainly come from scraps produced in magnesium alloy processing, including but not limited to blocky scraps, flake scraps, and fibrous scraps and particulate waste;

[0017] Step 2. The magnesium alloy waste collected above is crushed by a metal pulverizer, and it is required to be crushed into pellets and flakes with a particle size ranging from 1 to 100 mesh;

[0018] Step 3. Use a vibrating sieve machine to screen the crushed fragments, wherein 70g of large mesh fragments with a particle size of 40 mesh (about 0.43mm) are selected, and small mesh particles with a particle diameter of 60 mesh (about 0.25mm) are selected. Crushing material 30g, they are mixed together, and in this mixed crushing material, the mass ratio of large mesh crushed material and small mesh crushed material is 7:3;

[0019] Step 4. in t...

Embodiment 2

[0026] The present invention comprises the following steps:

[0027] Step 1. Collect magnesium alloy scraps with magnesium content ≥ 85%. These magnesium alloy scraps mainly come from scraps produced in magnesium alloy processing, including but not limited to blocky scraps, flake scraps, and fibrous scraps and particulate waste;

[0028] Step 2. The magnesium alloy waste collected above is crushed by a metal pulverizer, and it is required to be crushed into pellets and flakes with a particle size ranging from 1 to 100 mesh;

[0029] Step 3. Use a vibrating sieve machine to screen the crushed fragments, wherein 70g of large mesh fragments with a particle size of 20 mesh (about 0.85mm) are selected, and small mesh particles with a particle diameter of 40 mesh (about 0.43mm) are selected. Crushing material 30g, they are mixed together, and in this mixed crushing material, the mass ratio of large mesh crushed material and small mesh crushed material is 7:3;

[0030] Step 4. in t...

Embodiment 3

[0034] The present invention comprises the following steps:

[0035] Step 1. Collect magnesium alloy scraps with magnesium content ≥ 85%. These magnesium alloy scraps mainly come from scraps produced in magnesium alloy processing, including but not limited to blocky scraps, flake scraps, and fibrous scraps and particulate waste;

[0036] Step 2. The magnesium alloy waste collected above is crushed by a metal pulverizer, and it is required to be crushed into pellets and flakes with a particle size ranging from 1 to 100 mesh;

[0037] Step 3. Use a vibrating sieve machine to screen the pulverized fragments, wherein 160g of large mesh fragments with a particle size of 10 mesh (about 2.00mm) are selected, and small mesh particles with a particle diameter of 40 mesh (about 0.43mm) are selected. Crushing 40g, they are mixed together, and in this mixed crushing, the mass ratio of large mesh crushing and small mesh crushing is 8:2;

[0038] Step 4. in the guar gum base liquid of 0.4...

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Abstract

The invention discloses a method for recycling magnesium alloy scraps. The method includes that collected magnesium alloy scraps are crushed to form particles and flakes, and crushed magnesium alloy materials can be used for preparing a temporary plugging agent for oil-gas well acid fracturing operation along with soluble fibers. The method makes full use of an acid-soluble characteristic of magnesium alloy which also has an excellent mechanical property, and accordingly the magnesium alloy is processed and treated conveniently and simply prior to being combined with the soluble fibers for preparing the temporary plugging agent for oil-gas well acid fracturing operation. By adoption of the method, thorough recycling of the magnesium alloy scraps is realized in a convenient and economical way simple in operation, excellent performance and high benefits in exploitation of oil-gas wells are achieved, high-cost-performance recycling is realized, and high practicality is achieved.

Description

technical field [0001] The invention relates to the recovery and reuse technology of magnesium alloy waste. Background technique [0002] Magnesium alloy is an alloy composed of magnesium as the base material and other elements. It has the characteristics of low density, high specific strength, high specific stiffness, good thermal conductivity and electrical conductivity, and non-magnetic properties. As a functional structural material, magnesium alloy has been widely used in aviation, aerospace, transportation, chemical industry, rocket and other industrial sectors, and has developed rapidly. Due to the huge demand for magnesium alloys in industrial production, a large amount of magnesium alloy scraps—that is, waste chips—are produced every year during the production and processing of magnesium alloys. [0003] At present, the treatment of magnesium alloy waste is mainly secondary furnace resmelting, blending into other alloys and then participating in casting. Although ...

Claims

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Application Information

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IPC IPC(8): C09K8/50C09K8/514C09K8/512
CPCC09K8/501C09K8/5045C09K8/512C09K8/514
Inventor 刘多容戚斌潘宝风雷炜兰林李尚贵杨兵王文耀简高明
Owner CHINA PETROLEUM & CHEM CORP
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