Degassing sheet for gas-jet refining molten metal and preparation method thereof

A technology of refining metal and degassing sheet, which is applied in the field of degassing sheet, which can solve the problems of complex installation, obvious uniform effect of air injection, and small air injection aperture of degassing sheet, so as to achieve uniform air injection, large working area and ventilation efficiency, and small air injection aperture small effect

Active Publication Date: 2016-08-24
江苏苏嘉集团新材料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of the existing ventilation brick air-jet refining furnace that the ventilation brick contains heavy metal chromium element and the ventilation brick needs to be used in conjunction with the seat brick and the installation is complicated. Chromium degassing sheet and preparation method thereof, the degassing sheet has small air injection aperture, obvious effect of uniform air injection, and simple preparation method

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A degassing sheet for gas-jet refining molten metal, which contains components by mass percentage: natural sintered mullite M75 50%, white corundum 18%, active α-Al 2 o 3 Micropowder 30%, clay 2%; all components are combined with a sol-bond agent with a silicon oxide content of 20% and a specific gravity of 1.1, and the amount of the sol-bond agent is 4% of the total mass of the components. Among them, Al in natural sintered mullite M75 2 o 3 The content is 70%, the particle size is 0.2mm, the active α-Al 2 o 3 The particle size of the fine powder is 5 μm.

[0021] The preparation steps are:

[0022] (1) Ingredients: Weigh the raw materials according to the proportion of each component, natural sintered mullite M75, white corundum, active α-Al 2 o 3 Micronized powders, clays and sol binders;

[0023] (2) Mixing: First put the natural sintered mullite M75 and white corundum into the sand mixer for 2 minutes, then add the sol binder and continue mixing for 2 minut...

Embodiment 2

[0029] A degassing sheet for gas-jet refining molten metal, comprising components by mass percentage: natural sintered mullite M75 50%, white corundum 20%, active α-Al 2 o 3 Micropowder 25%, clay 5%; all components are combined with a sol-bond agent with a silicon oxide content of 25% and a specific gravity of 1.2, and the amount of the sol-bond agent is 4% of the total mass of the components. Among them, Al in natural sintered mullite M75 2 o 3 The content is 75%, the particle size is 0.5mm, the active α-Al 2 o 3 The particle size of the fine powder is 8 μm.

[0030] The preparation steps are:

[0031] (1) Ingredients: Weigh the raw materials according to the proportion of each component, natural sintered mullite M75, white corundum, active α-Al 2 o 3 Micronized powders, clays and sol binders;

[0032] (2) Mixing: First put the natural sintered mullite M75 and white corundum into the sand mixer for 4 minutes, then add the sol binder and continue mixing for 4 minutes, ...

Embodiment 3

[0038] A degassing sheet for gas-jet refining molten metal, which contains components by mass percentage: 60% of natural sintered mullite M75, 10% of white corundum, active α-Al 2 o 3 Micropowder 25%, clay 5%; all components are combined with a sol-bond agent with a silicon oxide content of 30% and a specific gravity of 1.2, and the amount of the sol-bond agent is 5% of the total mass of the components. Among them, Al in natural sintered mullite M75 2 o 3 The content is 75%, the particle size is 1.0mm, the active α-Al 2 o 3 The particle size of the fine powder is 10 μm.

[0039] The preparation steps are:

[0040] (1) Ingredients: Weigh the raw materials according to the proportion of each component, natural sintered mullite M75, white corundum, active α-Al 2 o 3 Micronized powders, clays and sol binders;

[0041] (2) Mixing: First put the natural sintered mullite M75 and white corundum into the sand mixer for 5 minutes, then add the sol binder and continue mixing for ...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a degassing sheet for jet refining of molten metal and a preparation method of the degassing sheet. The degassing sheet comprises the following components in percentage by mass: 50%-60% of mullite, 10%-20% of white corundum, 20%-30% of alumina micro powder and 2%-5% of clay, wherein all components are combined together by adopting a gel binding agent; the amount of the gel binding agent is 4%-5% of total mass of the components. The preparation method comprises the following steps: sequentially burdening, mixing raw materials, and then pressing and molding on a 2-4MPa of vibration molding machine; and baking at 100-140 DEG C, and then firing into a green brick in a shuttle kiln. The preparation method disclosed by the invention is simple; the prepared degassing sheet has the advantages of small jet aperture, jet uniformity, long service life, small resistance, and relatively low production cost, and is simple and convenient to use; nonferrous metal is not easy to ooze; and the working area and the ventilation efficiency are greater than those of common air bricks.

Description

technical field [0001] The invention relates to a degassing sheet used for gas-jet refining molten metal, and belongs to the technical field of refractory material preparation. Background technique [0002] Harmful solid inclusions and hydrogen in molten metal should be removed before metal and its alloys are cast. With the wide application of non-ferrous metal profiles, the quality requirements for metal profiles are getting higher and higher. The purification in the furnace can no longer meet the requirements, and the purification technology outside the furnace must be used. Raw materials for aviation forgings, foils, thin-walled profiles, wires and cables, automotive wheels and other products must be treated by a purification device outside the furnace before they can be cast. [0003] At present, there are two kinds of rotary air jet method and ceramic filter filter that are widely used in the purification device outside the furnace at home and abroad. However, the ro...

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): C04B35/66C04B35/622
Inventor 曹丽云张雪松
Owner 江苏苏嘉集团新材料有限公司
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