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

A kind of preparation method of castable

A castable and raw material technology, applied in the field of refractory materials, can solve the problems of easily polluted aluminum liquid composition, unqualified aluminum alloy product composition, poor wettability against aluminum liquid, etc. The effect of good corrosion resistance of molten aluminum and good wettability of molten aluminum

Active Publication Date: 2016-01-20
南通新兴机械制造有限公司
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing materials in this part have poor wettability against aluminum liquid, and are easy to contaminate the composition of aluminum liquid, resulting in unqualified composition of aluminum alloy products

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

[0013] Example 1: A casting material consists of 8mm-0mm corundum particles 69wt%, 4 0.4wt%, TiB 2 0.2wt%, SrTiO 3 0.2wt%, Na3AlF60.2wt%); and add 0.12% sodium tripolyphosphate and 0.03% polycarboxylate as dispersants accounting for the total weight of raw materials; when preparing, first wetting the anti-aluminum liquid and the particle size <0.044 The aluminum nitride fine powder raw material of mm is co-milled in a vibration mill for 30mins; the anti-aluminum liquid wetting agent and aluminum nitride fine powder are fully homogenized in advance to make a homogenized powder, and then the homogenized powder is wetted by the anti-aluminum liquid The proportion of aluminum nitride fine powder and aluminum nitride refractory castables in aluminum nitride refractory castables is 22wt%, mixed evenly with other components, and about 5wt% aluminum sol is added during construction and stirring, mixed evenly, vibrating pouring at the furnace site, conventional Use after curing.

Embodiment 2

[0014] Example 2: A castable consists of 8mm-0mm corundum particles 66wt%, 4 1.6wt%, TiB 2 0.8wt%, SrTiO 3 0.8wt%, Na3AlF60.8wt%); and add 0.12% sodium tripolyphosphate and 0.03% polycarboxylate as dispersants; the preparation process is the same as in Example 1, and about 6wt% aluminum is added during construction and stirring Colloidal sol, kneaded evenly, vibrating poured on the furnace site, used after conventional curing and baking.

Embodiment 3

[0015] Example 3: A castable consists of 8mm-0mm corundum particles 65wt%, 4 1.6wt%, TiB 2 0.8wt%, SrTiO 3 0.8wt%, Na 3 AlF 6 0.8wt%); and add 0.12% sodium tripolyphosphate and 0.03% polycarboxylate as dispersant in the total weight of raw materials; the preparation process is the same as in Example 1, and about 8wt% aluminum sol is added during construction and stirring, and the mixing is uniform , vibrated pouring at the furnace site, and used after conventional curing and baking.

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 field of fireproof materials, and relates to a method for preparing silicon carbide castable materials resistant to molten aluminum wetting. The castable materials comprise, by weight, 63% to 69% of corundum particles with the sizes ranging from 8 mm to 10 mm, 18% to 21% of aluminum nitride fine powder with the particle sizes smaller than 0.044 mm, 4% to 7% of pure calcium aluminate cement with the particle sizes smaller than 0.074 mm, 5% to 6% of silicon dioxide fine powder with the D90 equal to 0.1 micrometer, 1% to 6% of the combination of BaSO4, TiB2, SrTiO3 and Na3AlF6, 0.12% of sodium tripolyphosphate and 0.03% of sodium hexametaphosphate, wherein the combination is used as molten aluminum wetting resistant agents, the sodium tripolyphosphate and the sodium hexametaphosphate are added to serve as dispersing agents, and alumina sol serves as construction liquid. The castable materials prepared with the method have the sufficient strength, are excellent in thermal shock resistance, good in size stability and good in chemical stability, most importantly, are resistant to molten aluminum wetting, good in thermal stability, resistant to molten aluminum erosion, free of influencing molten aluminum ingredients and long in service life.

Description

technical field [0001] The invention belongs to the field of refractory materials, and mainly relates to a preparation method of a pouring material that resists the wetting of molten aluminum. Background technique [0002] The production of large-scale aluminum alloy ingots in the non-ferrous industry, as well as the further processing of aluminum strips, aluminum foils and other products require high precision in the control of aluminum alloy components. As the key equipment of the aluminum alloy deep processing project, the lining material of the large-scale aluminum smelting furnace, especially the lining material used at the bottom of the aluminum inlet inclined groove, the side wall and the throat of the aluminum smelting furnace, plays an important role in controlling the composition of the aluminum alloy. play an important role. Liquid aluminum not only contains elements such as magnesium, silicon and zinc with high chemical activity, but also has excellent fluidity....

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): C04B35/66
Inventor 郑香萍
Owner 南通新兴机械制造有限公司
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