Instrument for analyzing active calcium in calcium-series auxiliary agent for steelmaking

A technology of active calcium and analyzer, applied in the direction of analyzing materials, instruments, scientific instruments, etc., can solve the problems of lack of quantitative analysis of active calcium, affecting the accuracy of analysis results, accurate analysis of active calcium, etc., achieving good constant temperature effect and wide application performance, easy operation

Active Publication Date: 2013-06-12
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0002] Calcium-based additives such as core-spun calcium wire, iron-calcium wire, and aluminum-calcium wire are widely used as a deoxidizer in the steelmaking process in recent years. The calcium in calcium-based additives is mainly active calcium with a content of more than 15%. The active calcium in the sample is highly active and easily oxidized, and the sample particle size is uneven and soft, which makes it impossible to prepare samples, which seriously affects the accuracy of the analysis results.
In addition, the current analysis of calcium content in calcium-based additives at home and abroad is only a method of determining its total calcium, lack of methods and complete se

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  • Instrument for analyzing active calcium in calcium-series auxiliary agent for steelmaking

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention's using method is described in detail:

[0013] Before the analysis of calcium additives, the special reaction vessel needs to be placed in a super constant temperature water bath. All pipelines in the system are connected with rubber hoses, the circulating water constant temperature device is turned on, and the tightness of the system is checked.

[0014] Put a certain amount of material to be analyzed into the sample cup (8), fix the sample cup on the controllable sampling rod (4), the spring clip (1) and the spring clip (2) clamp the controllable sample injection Move the upper end of the rod (4) into the special reactor (6) filled with distilled water in advance, tighten the built-in rubber plug sealing cover (5), turn the ground two-way cock (10) on the top of the trachea to make the thermostat trachea (15) Communicate with the exhaust hole (14), lift the liquid level of the level bottle (20) an...

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Abstract

The invention discloses an instrument for analyzing active calcium in a calcium-series auxiliary agent for steelmaking; the instrument comprises a reaction system device, a measuring system and a sealing liquid system device, and is characterized in that a controllable sampling rod in a reaction system can be used for controlling the reaction speed of a sample and a solution, and the sealing property is good; a gas burette has a double-layer structure, thus being good in thermostatical effect and eliminating the influence of environment to gas volume; the gas burette has two reading ways due to two scale units; and the bottom of a leveling bottle in the sealing liquid system is provided with an overflow hole, so that reverse acting force influence to the gas volume caused by the discharged liquid stored in the leveling bottle can be eliminated, and the accuracy of gas volume measurement is guaranteed. Furthermore, the instrument is also used for series experiments such as molar gas constant determination and the like of physics and chemical laboratories in colleges and universities; and the instrument has the characteristics of being wide in applicability, easy to popularize in the metallurgical industry, low in analysis cost, simple, convenient and rapid to operate, etc.

Description

technical field [0001] The invention belongs to an analysis instrument for active calcium, in particular to an analyzer for active calcium in calcium additives for steelmaking. Background technique [0002] Calcium-based additives such as core-spun calcium wire, iron-calcium wire, and aluminum-calcium wire are widely used as a deoxidizer in the steelmaking process in recent years. The calcium in calcium-based additives is mainly active calcium with a content of more than 15%. The active calcium in the sample is highly active and easily oxidized, and the sample particle size is uneven and soft, which makes it impossible to prepare samples, which seriously affects the accuracy of the analysis results. In addition, the current analysis of calcium content in calcium-based additives at home and abroad is only a method of determining its total calcium, lack of methods and complete sets of equipment for quantitative analysis of active calcium, which makes it impossible for domestic...

Claims

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Application Information

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IPC IPC(8): G01N7/18G01N5/00
Inventor 邱会东熊伟徐刚贾云杨力强
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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