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Analytical method for single substance calcium in core-spun calcium line

An analytical method and elemental technology, applied in the field of testing and analysis, can solve problems such as no core-coated calcium wire, and achieve the effects of wide applicability, simple equipment, simple and fast operation

Active Publication Date: 2013-09-18
SHOUGANG SHUICHENG IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After retrieval, the Chinese patent applications involving calcium analysis methods include No. ZL95100757.2 "Automatic Calcium Analysis Method and System for Cement Production Line", No. ZL200810031711.X "Aluminum, Calcium, Iron, Molybdenum, Niobium, Titanium, Analysis and detection method of tungsten and other impurity elements" and No. 200910236483.4 "Analysis and detection method of calcium element in ore", currently there is no application for the analysis method of elemental calcium content in cored calcium wire products

Method used

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  • Analytical method for single substance calcium in core-spun calcium line
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  • Analytical method for single substance calcium in core-spun calcium line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The core-clad calcium wire sample is an analysis sample before the steel plant furnace, and the analysis includes the following steps:

[0023] Cut off a core-spun calcium wire sample with a length of about 5cm, quickly pour out the inner filling material (material to be analyzed) into a sealed bag, weigh the total weight with a ten-thousandth balance, and then put 15.7097g of the material to be analyzed into the small test In the sample cup, move it into a 2000mL reaction bottle filled with water and saturated with hydrogen in advance, and tighten the rubber stopper; turn the two-way piston of the trachea to make the trachea communicate with the exhaust hole of the piston; lift the level bottle to exhaust the air in the trachea as much as possible , turn the piston of the trachea to connect the trachea to the reaction bottle, and place it for 2 minutes; immerse the fixed ring of the sample cup in water, shake the reaction bottle gently to make the sample fully react wit...

Embodiment 2

[0025] The core-clad calcium wire sample is another batch of samples before the furnace of the iron and steel plant. The analysis includes the following steps:

[0026] Cut a core-spun calcium wire sample with a length of about 6cm, quickly pour out the inner filling material (material to be analyzed) into a sealed bag, weigh the total weight with a ten-thousandth balance, and then put 18.3640g of the material to be analyzed into the small test In the sample cup, move it into a 2000mL reaction bottle filled with water and saturated with hydrogen in advance, and tighten the rubber stopper; turn the two-way piston of the trachea to make the trachea communicate with the exhaust hole of the piston; lift the level bottle to exhaust the air in the trachea as much as possible , turn the piston of the trachea to connect the trachea to the reaction bottle, and place it for 2 minutes; immerse the fixed ring of the sample cup in water, and shake the reaction bottle gently to make the samp...

Embodiment 3

[0028] The core-spun calcium wire samples are samples from different manufacturers in front of the steel plant furnace, including the following steps:

[0029] Cut off a core-spun calcium wire sample with a length of about 7cm, quickly pour out the inner filling material (material to be analyzed) into a sealed bag, weigh the total weight with a ten-thousandth balance, and then put 18.1378g of the material to be analyzed into the small test In the sample cup, move it into a 2000mL reaction bottle filled with water and saturated with hydrogen in advance, and tighten the rubber stopper; turn the two-way piston of the trachea to make the trachea communicate with the exhaust hole of the piston; lift the level bottle to exhaust the air in the trachea as much as possible , turn the piston of the trachea to connect the trachea to the reaction bottle, and place it for 2 minutes; immerse the fixed ring of the sample cup in water, and shake the reaction bottle gently to make the sample fu...

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Abstract

The invention discloses an analytical method for single substance calcium in a core-spun calcium line; the analytical method comprises the following steps of: intercepting a core-spun calcium line sample with a certain length, and rapidly pouring padding filled in the sample in a sealing bag; accurately weighing a certain amount of padding in the test sample in a sample cup, moving the sample cup into a reaction bottle containing water in advance, and tightening a rubber plug; and adjusting a gas burette to be balanced with the pressure of the reaction bottle, then adjusting a leveling bottle to be horizontal with the gas burette, rotating a piston of the gas burette to lead the gas burette to be communicated with the reaction bottle, immersing a fixing ring of the sample cup in water, lightly shaking the reaction bottle to lead the test sample to be fully reacted with water, and writing down the readings of an atmosphere pressure, a temperature and a gas volume terminal point when the reading of the gas burette does not change after reaction is ended; and calculating the content of the single substance in the test sample according to the gas volume. The analytical method has the advantages of simple equipment, simple and rapid operation, low analytic cost, wide applicability and particularly suitability for popularization and generation in metallurgy industries.

Description

technical field [0001] The invention belongs to testing and analysis methods, in particular to an analysis method for elemental calcium in cored calcium wires. Background technique [0002] Core-spun calcium wire is a deoxidizer widely used in the steelmaking process in recent years. It is a calcium-iron cored wire that is physically mixed with iron powder and elemental calcium particles according to the ratio. It is wrapped with a layer of white iron. . The main components of the cored calcium wire are elemental calcium and metallic iron, of which about 20% calcium and about 75% iron. Because the calcium activity in the sample is strong and easily oxidized, and the sample is extremely uneven, the conventional sample preparation method cannot meet the analysis requirements, which seriously affects the analysis results. At present, the analysis of calcium content in calcium wire at home and abroad is only a method of determining the total calcium, and there is no standard f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/18
Inventor 杨茂麟张家相邱会东徐刚贾云张东升吴丽萍邓雯锦何吉兰
Owner SHOUGANG SHUICHENG IRON & STEEL GRP