Unlock instant, AI-driven research and patent intelligence for your innovation.

A resource recovery method and application of waste nanocrystalline iron core

A recycling method and nanocrystal technology, which are applied in the direction of improving process efficiency, can solve the problems of insufficient utilization of waste iron cores, high purity requirements, and low strip yield, so as to reduce refining slag. Erosion of furnace lining, reduction of inclusion content, effect of low inclusion content

Active Publication Date: 2020-07-03
山东济钢泰航合金有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor thinks that: because the existing production method of nanocrystalline strip material uses high-purity raw materials, the cleanliness of the produced nanocrystalline parent material is higher; the follow-up strip removal process requires very high purity of the parent material, and the existing process is heavy. The cleanliness of the base metal produced by melting waste iron cores is poor, and the yield of strips in subsequent strip production is low, and the production cost is high, resulting in a large number of waste iron cores not being well utilized

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A resource recovery method and application of waste nanocrystalline iron core
  • A resource recovery method and application of waste nanocrystalline iron core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A resource recovery method for waste nanocrystalline iron cores, taking an intermediate frequency furnace with a capacity of 1 ton as an example, includes the following steps:

[0045] (1) Add 150kg at the bottom of the furnace to be used to prepare the parent material (6%Si, 1.3%B, 0.7%Cu, 4.5%Nb, and the balance is Fe and unavoidable impurities, mass percent), electric heating;

[0046] (2) After the base metal is melted into molten steel, start blowing argon gas at the bottom, the argon gas is industrially pure (purity>99.9%), and the pressure is 0.2MPa;

[0047] (3) When the temperature of molten steel rises to 1500°C, add 100kg of waste nanocrystalline iron core and continue heating. When the waste nanocrystalline iron core melts and the temperature of molten steel rises to 1500°C, add 2kg of the first refining slag and continue heating. The first refining slag and the waste nanocrystalline iron core are added alternately until the melting furnace is filled with m...

Embodiment 2

[0053] A resource recovery method for waste nanocrystalline iron cores, taking an intermediate frequency furnace with a capacity of 1 ton as an example, includes the following steps:

[0054] (1) Add 100kg at the bottom of the furnace to be used to prepare the parent material (5.8% Si, 1.2% B, 0.6% Cu, 4.6% Nb, the balance is Fe and unavoidable impurities, mass percent), electric heating;

[0055] (2) After the base metal is melted into molten steel, start blowing argon gas at the bottom, the argon gas is industrially pure (purity>99.9%), and the pressure is 0.4MPa;

[0056] (3) When the temperature of molten steel rises to 1400°C, add 100kg of waste nanocrystalline iron core and continue heating. When the waste nanocrystalline iron core melts and the temperature of molten steel rises to 1500°C, add 1kg of the first refining slag and continue heating. The first refining slag and the waste nanocrystalline iron core are added alternately until the molten steel is full of the sm...

Embodiment 3

[0062] A resource recovery method for waste nanocrystalline iron cores, taking an intermediate frequency furnace with a capacity of 1 ton as an example, includes the following steps:

[0063] (1) Add 180kg at the bottom of the furnace to be used to prepare the parent material (6.1%Si, 1.4%B, 0.7%Cu, 4.4%Nb, the balance is Fe and unavoidable impurities, mass percent), electric heating;

[0064] (2) After the molten steel is melted from the base metal, start blowing argon gas at the bottom, the argon gas is industrially pure (purity>99.9%), and the pressure is 0.3MPa;

[0065] (3) When the temperature of molten steel rises to 1550°C, add 100kg of waste nanocrystalline iron core and continue heating. When the waste nanocrystalline iron core melts and the temperature of molten steel rises to 1550°C, add 3kg of the first refining slag and continue heating. The first refining slag and the waste nanocrystalline iron core are alternately added until the molten steel is full of the sm...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of nanocrystalline iron cores, and particularly relates to a resource recycling method of a waste nanocrystalline iron core and application thereof. The method comprises the steps that firstly, base metal used for preparing a nanocrystalline iron core is melted under the protective atmosphere; secondly, the waste nanocrystalline iron core is added intothe molten base metal in the first step, continuous heating is carried out until the waste nanocrystalline iron core is completely molten, and first refining slag is added; thirdly, steel slag on themolten steel surface is picked off, sampling inspection is carried out, and meanwhile, molten steel is subjected to heat preservation; fourthly, according to the laboratory report, the molten steel component is adjusted, the first refining slag is added, and the molten steel surface steel slag is picked off; and fifthly, second refining slag is added into a tundish, the molten steel is added intothe tundish, the molten steel surface steel slag is picked off, protection atmosphere blowing is stopped, and after the molten steel is reduce to the set temperature, casting is carried out. The alloymelting technique solution is adopted for remelting the waste nanocrystalline iron core, the base metal inclusion content after the waste nanocrystalline iron core is re-melted can be obviously reduced, and the yield in the subsequent melt-spinning process can be improved.

Description

technical field [0001] The invention belongs to the technical field of nanocrystalline iron cores, and in particular relates to a recycling method and application of waste nanocrystalline iron cores. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Fe-Si-B-Cu-Nb series nanocrystalline soft magnetic materials have excellent properties: high saturation magnetic induction (1.24T), high initial permeability (10 6 ), low specific loss (P) and good temperature stability. Devices made of this material have the advantages of high performance, small size, light weight, etc., and are widely used in precision current transformers, switching power supplies, high-power s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/16C22C38/12C22C33/06C21C7/076
CPCC21C7/076C22C33/06C22C38/02C22C38/12C22C38/16C22C2200/04Y02P10/20
Inventor 李智林来斌杨来顺杨洪波王茂周张新凯杨兴友董陶
Owner 山东济钢泰航合金有限公司