Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for detecting trace phosphorus in aluminum ingot for remelting

An aluminum ingot and remelting technology, applied in the preparation of test samples, measurement of color/spectral characteristics, material analysis through observation of the influence of chemical indicators, etc., can solve the problem of low sensitivity, achieve accurate results, and operate simple effect

Inactive Publication Date: 2019-06-04
TIANJIN LIZHONG ALLOY GROUP
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to change the deficiencies of the existing detection methods: low sensitivity, ignoring the interference of water, and provide a method for detecting trace amounts of phosphorus in aluminum ingots for remelting

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 detecting trace phosphorus in aluminum ingot for remelting
  • Method for detecting trace phosphorus in aluminum ingot for remelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for detecting trace amounts of phosphorus in aluminum ingots for remelting, the steps are:

[0029] 1. Instruments and main reagents

[0030] 722 spectrophotometer, 1cm cuvette, volumetric flask, beaker, measuring cylinder, separating funnel;

[0031] Phosphorus standard solution 0.002mg / ml: make 1.0mg / ml stock solution according to the conventional method, and dilute it into 0.002mg / ml standard working solution when used;

[0032] Ammonium molybdate solution: take 50g of ammonium molybdate and dissolve it in water, add 190ml (the volume ratio of nitric acid to water is 1:3) HNO3, dilute to 500ml, and stir well;

[0033] SnCl solution: weigh 1gSnCl 2 Dissolve in 8ml HCl, dilute to 100ml, and prepare immediately;

[0034] Nitric acid (the volume ratio of nitric acid and water is 1:1), hydrochloric acid (the volume ratio of hydrochloric acid and water is 1:1), hydrochloric acid (the volume ratio of hydrochloric acid and water is 3:17), potassium permanganate (...

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 relates to a method for detecting trace phosphorus in an aluminum ingot for remelting. The method comprises the steps of: dissolving a sample by using nitric acid and hydrochloric acid,so that the phosphorus is in the state of orthophosphoric acid or phosphorous acid; adding perchloric acid into the sample to completely dispel the surplus acid; completely oxidizing the phosphorus inthe phosphorous acid state into phosphorus in the orthophosphoric acid state by using potassium permanganate, so as to develop color of the phosphorus; extracting phosphorus-molybdenum heteropolyacidby using butyl acetate under a certain acidity; reducing a complex to phosphomolybdenum blue by means of SnCl2, that is, separating other elements and enriching trace phosphorus; and determining content of the trace phosphorus in a reextraction liquid. The method is fast, simple in operation, and precise in results.

Description

technical field [0001] The invention belongs to a detection method and relates to the detection of trace phosphorus in aluminum ingots for remelting. The detection method is a chemical method for detecting trace phosphorus in aluminum ingots for remelting. Background technique [0002] Phosphorus is an element that exists widely in nature and has active properties. Therefore, it is often necessary to determine the content of phosphorus in aluminum ingots for remelting during the production of aluminum alloys. [0003] At present, the methods for detecting phosphorus content in aluminum ingots for remelting mainly include photometric method and ICP method. The methods for photometric determination of phosphorus include phosphorus vanadium molybdenum yellow method and phosphorus molybdenum blue method, and the sensitivity of phosphorus vanadium molybdenum yellow method / ICP method is low. . Contents of the invention [0004] The purpose of the present invention is to change ...

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): G01N21/78G01N21/31G01N1/28
Inventor 姚晓晗王如芬李志琴姜淑珍孙鹏
Owner TIANJIN LIZHONG ALLOY GROUP