Method for rapidly determining lithium oxide, potassium oxide and sodium oxide in continuous casting mold fluxes

A continuous casting mold slag and rapid determination technology, applied in the field of chemical inspection, can solve the problems of no lithium oxide, limitations of atomic absorption method, cumbersome analysis steps, etc., achieve the reduction of reagent consumption, accurate and reliable measurement results, simple and fast operation Effect

Inactive Publication Date: 2018-12-07
TANGSHAN IRON & STEEL GROUP +1
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a rapid determination method for lithium oxide, potassium oxide, and sodium oxide in continuous casting mold flux, which solves the limitations of atomic absorption method, cumbersome analysis steps, and no lithium oxide, potassium oxide, and sodium oxide. Methodological issues for simultaneous determination

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 rapidly determining lithium oxide, potassium oxide and sodium oxide in continuous casting mold fluxes
  • Method for rapidly determining lithium oxide, potassium oxide and sodium oxide in continuous casting mold fluxes
  • Method for rapidly determining lithium oxide, potassium oxide and sodium oxide in continuous casting mold fluxes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this embodiment, a rapid determination method for lithium oxide, potassium oxide, and sodium oxide in continuous casting mold flux comprises the following steps:

[0036] (1) Decomposition treatment of continuous casting mold flux: the mold flux sample is dried at 105-110°C for 1.5-2 hours, cooled to room temperature in a desiccator, and ground to prepare a mold flux sample with a particle size of ≤0.097mm;

[0037] Weigh 0.1000g mold powder sample into a 500mL polytetrafluoroethylene beaker, rinse the beaker wall with 20mL ultrapure water, add 5mL nitric acid, 5mL hydrochloric acid, 5mL hydrofluoric acid, 5mL perchloric acid, heat and decompose on a low-temperature electric heating plate, Take off the perchloric acid fume and cool it down;

[0038] (2) Preparation of mold flux sample solution: add 5mL hydrochloric acid to the cooled beaker and heat on a low-temperature electric heating plate at 150°C to dissolve the salts, remove the beaker, cool to room temperature...

Embodiment 2

[0061] In this embodiment, a rapid determination method for lithium oxide, potassium oxide, and sodium oxide in continuous casting mold flux comprises the following steps:

[0062] (1) Decomposition treatment of continuous casting mold flux: the mold flux sample is dried at 105-110°C for 1.5-2 hours, cooled to room temperature in a desiccator, and ground to prepare a mold flux sample with a particle size of ≤0.097mm;

[0063] Weigh 0.2000g mold powder sample into a 500mL polytetrafluoroethylene beaker, rinse the beaker wall with 15mL ultrapure water, add 6mL nitric acid, 6mL hydrochloric acid, 5mL hydrofluoric acid, 6mL perchloric acid, heat and decompose on a low-temperature electric heating plate, Take off the perchloric acid fumes and let it cool down;

[0064] (2) Preparation of mold flux sample solution: add 5mL hydrochloric acid to the cooled beaker and heat on a low-temperature electric heating plate at 200°C to dissolve the salts, remove the beaker, cool to room temper...

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
electrical resistivityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for rapidly determining lithium oxide, potassium oxide and sodium oxide in continuous casting mold fluxes. The method comprises the following steps: 1) performing decomposition treatment on the continuous casting mold fluxes; 2) preparing a mold flux sample solution; 3) preparing a standard solution of to-be-determined components; 4) drawing a calibration curve; and 5) determining the content of each component in the mold flux sample. The method disclosed by the invention has the advantages of being wide in linearity range, high in accuracy, simple in operation, rapid, sensitive, small in usage amount of reagents and the like, laboratory contamination can be reduced, the determination period is shortened by using a plasma spectrometer, and the requirementson incoming inspection of the continuous casting mold fluxes and on analysis of actual application in the production field can be met.

Description

technical field [0001] The invention belongs to the technical field of chemical inspection, and in particular relates to a rapid determination method for lithium oxide, potassium oxide and sodium oxide in continuous casting mold flux. Background technique [0002] During the pouring process of molten steel, adding mold slag can improve the quality of cast slabs, prevent longitudinal cracks on the surface, absorb and dissolve inclusions floating from molten steel to the slag boundary, purify molten steel, and isolate air, effectively preventing secondary oxidation of molten steel and Heat is lost. Mold powders of different types, properties and uses are derived from different steel types, different casting machines and different continuous casting process conditions. By changing the composition of the mold flux, the crystallinity and thermal resistance of the flux film can be controlled, thereby effectively controlling the occurrence of surface defects of the slab. Therefore...

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): G01N21/73
CPCG01N21/73
Inventor 王文焱郭健冯晴晴张军郑迅燕
Owner TANGSHAN IRON & STEEL GROUP
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