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

Continuous casting mold fluxes for stainless steel and preparation method of fluxes

A continuous casting mold slag and stainless steel technology, applied in the field of metallurgical materials, can solve the problems of increasing the difficulty of circulating water treatment, the cost of neutralizer, the increase of equipment maintenance costs, the increase of concentration and pH value, etc., and achieve good subcutaneous and internal quality, Good lubricating effect and stable melting effect

Active Publication Date: 2019-12-27
洛阳科丰冶金新材料有限公司
View PDF12 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As we all know, fluorine is a toxic element, which produces a large amount of fluoride gas that is harmful to the environment during the melting process. Not only that, the increase in fluoride ion concentration and pH value greatly accelerates the corrosion rate of continuous casting equipment, increases equipment maintenance costs, and increases Increased the difficulty of circulating water treatment and the cost of neutralizers, increased the burden of sewage discharge

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

preparation example Construction

[0033] Another object of the present invention is to provide a method for preparing the above-mentioned continuous casting mold flux for stainless steel, which method comprises the following steps:

[0034] S1: In terms of parts by weight, weigh 5.0-7.0 parts by weight of glass powder, 40.0-55.0 parts by weight of wollastonite, 3.0-4.5 parts by weight of carbon black, 5.0-9.0 parts by weight of cement clinker, 3.0 parts by weight ~5.0 parts by weight of calcite, 5.0~7.0 parts by weight of soda water, 8.0~12.0 parts by weight of bauxite, 2.5~5.5 parts by weight of calcite, 6.0~8.0 parts by weight of albite, 1.0~2.0 parts by weight A binder in parts by weight and 3.0 to 12.0 parts by weight of cerium carbonate are mixed to obtain raw material powder;

[0035] S2: After pulverizing the raw material powder, add clear water and perform ball milling to obtain ball milling powder;

[0036] S3: Put the ball mill powder into the melting furnace for melting at 1390°C to 1410°C, then wa...

Embodiment 1

[0042] S1: In terms of parts by weight, weigh 5.2 parts by weight of glass powder, 42.5 parts by weight of wollastonite, 3.0 parts by weight of carbon black, 5.0 parts by weight of cement clinker, 3.0 parts by weight of calcite, and 5.0 parts by weight soda water, bauxite of 8.5 parts by weight, magnesia of 2.5 parts by weight, albite of 6.0 parts by weight, binding agent of 1.5 parts by weight, cerium carbonate of 3.0 parts by weight, mix, obtain raw material powder;

[0043] S2: After pulverizing the raw material powder, add clear water and perform ball milling to obtain ball milling powder;

[0044] S3: Put the ball mill powder into a liningless melting furnace with water-cooled furnace walls for melting at 1400°C, then water quench, dry, and pulverize to obtain the melted powder;

[0045] S4: In terms of parts by weight, 1.2 parts by weight of graphite is added to the melted powder, and the melted powder is granulated in a spray granulation tower to obtain hollow granular ...

Embodiment 2

[0052] In the present embodiment S1, according to parts by weight, respectively weigh 5.7 parts by weight of glass powder, 44.5 parts by weight of wollastonite, 3.0 parts by weight of carbon black, 5.2 parts by weight of cement clinker, and 3.2 parts by weight of calcite, The soda water of 5.5 parts by weight, the bauxite of 9.0 parts by weight, the magnesia of 2.7 parts by weight, the albite of 6.0 parts by weight, the graphite of 1.0 parts by weight, the binding agent of 1.5 parts by weight, the Cerium carbonate is mixed to obtain raw material powder; other steps are the same as in Example 1.

[0053] The continuous casting mold flux for stainless steel prepared in this example is detected. In parts by weight, the chemical composition in the continuous casting mold flux for stainless steel includes 32.9 parts by weight of CaO, 26.7 parts by weight of SiO 2 , 3.5 parts by weight Al 2 o 3 , 6.7 parts by weight of Na 2 O, 4.3 parts by weight Ce 2 o 3 , 0.7 parts by weight ...

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
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention provides continuous casting mold fluxes for stainless steel and a preparation method of the fluxes, and relates to the technical field of metallurgical materials. The continuous castingmold fluxes comprise the following chemical compositions in parts by weight: 31.9-36.3 parts of CaO, 25.4-29.6 parts of SiO2, 3.0-6.0 parts of Al2O3, 6.5-7.5 parts of Na2O, 3.0-12.0 parts of Ce2O3, 0.5-2.0 parts of MgO, larger than 0 and less than or equal to 2.0 parts of Fe2O3, 1.0-3.0 parts of C, and 11.0-15.0 parts of volatile components. According to the continuous casting mold fluxes for stainless steel, the non-cleaning rate of the surface of the cast duplex stainless steel casting slab can reach above 98%, and the quality of the duplex stainless steel casting slab is good under the skinand inside.

Description

Technical field [0001] The present invention relates to the technical field of metallurgical materials, and specifically to a continuous casting protective slag for stainless steel and a preparation method thereof. Background technique [0002] Stainless steel refers to steel that is resistant to weak corrosive media such as air, steam, water, and chemically corrosive media such as acids, alkali, and salts. It is also called stainless acid-resistant steel. It mainly includes austenite, ferrite, martensite, and Duplex stainless steel, etc. Because stainless steel has many excellent properties, it is widely used in industries such as energy and environmental protection, chemical petroleum, and nuclear power. [0003] Continuous casting powder is a kind of powdery or small granular steelmaking auxiliary material. It is used to cover the surface of molten steel in the crystallizer of the continuous casting machine. It plays a good thermal insulation role. On the one hand, it pr...

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 Applications(China)
IPC IPC(8): B22D11/111B22D11/108
CPCB22D11/108B22D11/111
Inventor 徐旭松许孟然刘晓叶超孙志英曹清林
Owner 洛阳科丰冶金新材料有限公司
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