Method for cleaning molten non-ferrous metal and its equipment

A technology for non-ferrous metals and purification equipment, which is applied to the purification and refining method of aluminum metal melt. The equipment field designed to realize the purification method can solve problems such as unenvironmental protection, and achieve the effect of saving energy and improving the environment.

Inactive Publication Date: 2002-06-19
黄德盛
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to prevent the oxidation of the tumbling molten aluminum and reduce aluminum consumption and impurities, these equipment also use covering agents containing chlorine (Cl) or fluorine (F), which also h

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 cleaning molten non-ferrous metal and its equipment
  • Method for cleaning molten non-ferrous metal and its equipment
  • Method for cleaning molten non-ferrous metal and its equipment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] The combination of bubble adsorption (N) and vacuum negative pressure (V) of the purified gas to produce an efficient and environmentally friendly purification function is the technical basis and core of the present invention, and is also the technical feature of the present invention that is different from other types of purification methods.

[0029] Generally, the processing chamber of the purification equipment for bubble adsorption is closed or semi-closed. Therefore, when the purification bubbles rise from the bottom, the impurities in the aluminum liquid, including hydrogen and oxide slag, will surface and enter the top space of the processing chamber. , Just gather there, it will soon become saturated and generate pressure, which will form resistance to the impurities that continue to escape from the molten aluminum. The concentration of impurities in the upper layer of molten aluminum will also increase, which will inevitably weaken the purificat...

Example Embodiment

[0038] Example 2

[0039] The equipment for realizing the purification method of the present invention can also be shown in Figure 5~ Figure 7 The single-chamber structure shown, as shown in Figures 5 and 6, the single-chamber structure non-ferrous metal purification device 11a is provided with a housing 11a 1 , Refractory board 11a is attached to the inner wall of the shell 8 , The inner space of the shell constitutes the processing chamber 11a 2 , The upper part of the shell is equipped with a vacuum cover 11a connected with the vacuum machine 3 , The bottom of the shell is equipped with a purification gas diffusion plate 11a 4 , There is a gate 11a at the bottom 9 , With molten metal inlet 11a on both sides 5 And molten metal outlet 11a 6 , There is a sight glass 11a on the vacuum hood 7 .

[0040] This device is a simpler device used in continuous or semi-continuous casting. If conditions permit, the flow channel type NSV device can also add eddy current function. If the cond...

Example Embodiment

[0044] Example 3

[0045] Furthermore, the equipment for implementing the purification method of the present invention can also be Figure 8 In the roomless structure shown, a vacuum cover 121 and a sight glass 122 are provided on the upper part of the melting furnace 124, and a bell-shaped purified gas diffusion tube 123 is installed in the furnace.

[0046] The device is directly used on various stoves such as electric induction furnaces or holding furnaces. The cover is equipped with a bell-shaped purification gas diffusion tube to spray nitrogen (N) gas; various types of rotating rotors can also be used to improve Degassing efficiency. There is no need to install an electric heating rod, because the stove itself has a heating function (equivalent to an external heating type). The vacuum cover (V) is necessary, so that it can be combined with the nitrogen gas bubble to purify the molten metal.

[0047] Like the device 11b, this device is not limited by the processing time, and t...

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 present invention relates to a method for purifying molten non-ferrous metal liquid and its equipment. Its method includes adsorptive purification by using purification gas and making it pass through molten non-ferrous metal liquid. The invention is characterized by that at the same time of making adsorptive purification by using gas, the evacuation is made over the molten non-ferrous metal liquid so as to form negative pressure to suck the molten liquid. Its equipment is formed from non-ferrous metal purification device and evacuation device that is connected with the space over the molten liquid in the purification device. Said purification device can be in monochamber structure, several chamber structure and chamber-free structure. Said method is high in efficiency, low in energy consumption and can save energy.

Description

technical field [0001] The present invention relates to a method for purifying non-ferrous metal melts, in particular to an aluminum alloy for purifying molten aluminum and ensuring the quality and performance of castings in order to remove impurities such as hydrogen and oxides and other harmful substances in molten aluminum. Purification and refining method of molten metal, and equipment designed for the realization of the purification method. Background technique [0002] Aluminum alloy will inhale hydrogen during the melting process, and will also oxidize to form alumina slag. If these hydrogen and alumina slag are not removed, there may be defects such as pores and slag inclusions in the casting, which will inevitably affect the performance, strength, and even appearance of the product. negative effect. Therefore, after the aluminum alloy is melted, it must be purified to remove harmful impurities and reduce the hydrogen content, so as to obtain pure molten metal and e...

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
IPC IPC(8): C22B9/05
Inventor 黄德盛
Owner 黄德盛
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap