Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for recovering tungsten-base alloy waste

A technology of tungsten-based alloy and scrap, which is applied in the field of recycling tungsten-based alloy scrap, can solve the problems of environmental pollution, high recycling cost, and high energy consumption, and achieve the effect of ensuring quality and effective reuse

Active Publication Date: 2015-05-06
宜兴市炜华合金材料有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, there are three methods for recovering tungsten-based alloys: molten bath recovery, hydrometallurgy and redox. Among them, the molten bath recovery has high temperature, high energy consumption, complicated process, and high recovery cost; Complex and easy to cause serious pollution to the environment; only redox method is simple, economical and reliable
Recycled tungsten-based alloy waste is generally used in steel enterprises to produce special steel products. This is the simplest resource recycling, and the utilization rate is not high.

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
  • Method for recovering tungsten-base alloy waste
  • Method for recovering tungsten-base alloy waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: First, use 5% HCL and 5% NaOH to clean the tungsten-based alloy waste and process the waste into small pieces; secondly, place the tray containing the tungsten-based alloy waste on the feeding platform 4 of the recycling furnace ; Turn on the system, the automatic furnace door 3 is opened, the waste tray is pushed into the feeding pipe 2 by the propulsion device 5, the automatic furnace door 3 is closed, and the temperature in the furnace is controlled to 600 ° C, the waste is oxidized in the recovery furnace, and the tungsten-based alloy waste is oxidized. Oxides are formed; after the reaction, the automatic furnace door 3 is opened, and the material is discharged; then the product is detected, and the qualified product is placed on the feeding platform 4 again, and is pushed into the feeding pipe 2 by the propulsion device 5. Nitrogen is introduced, and then the reducing gas hydrogen is introduced. The waste undergoes a reduction reaction in the recovery fur...

Embodiment 2

[0015] The steps of Example 2 and Example 1 are basically the same, except that the HCL concentration is 10%, the oxidation reaction temperature is 1100°C, and the reduction reaction temperature is 1200°C.

Embodiment 3

[0016] The steps of Example 3 are basically the same as those of Example 1, except that the HCL concentration is 7%, the oxidation reaction temperature is 700°C, and the reduction reaction temperature is 700°C.

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 discloses a method for recovering tungsten-base alloy waste, which comprises the following steps: (1) pretreating tungsten-base alloy waste; (2) carrying out oxidation reaction on the pretreated tungsten-base alloy waste in a recovery furnace; and (3) carrying out reduction reaction on the product subjected to oxidation reaction in the recovery furnace. According to the invention, the tungsten-base alloy waste is converted into high-quality tungsten alloy powder by oxidation-reduction reaction in the special equipment, and can be directly used for producing high-performance tungsten alloy, thereby effectively reutilizing resources and enhancing the utilization ratio of the resources.

Description

technical field [0001] The invention relates to a method for recycling tungsten-based alloy waste. Background technique [0002] Tungsten is a non-renewable resource. After years of mining, its reserves have dropped sharply. Therefore, in order to protect the existing tungsten resources and improve its utilization rate, it is particularly important to recycle tungsten. Generally, there are three types of tungsten-based alloy recycling: molten bath recycling method, hydrometallurgy method and redox method. Among them, molten bath recycling method has high temperature, high energy consumption, complex process and high recovery cost; hydrometallurgy method is also quite Complex and easy to cause serious pollution to the environment; only the redox process is simple, economical and reliable. The recycled tungsten-based alloy waste is generally used in steel enterprises to produce special steel, which is the simplest resource recycling, and the utilization rate is not high. SU...

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): C22B7/00C22B34/36C22C1/02C22C27/04B22F9/22
CPCY02P10/20
Inventor 李云峰申海宁谢欣杰崔朝晖
Owner 宜兴市炜华合金材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com