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

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...

AI Technical Summary

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 sets of equipment for quantitative analysis of active calcium, which makes it impossible for domestic iron and steel enterprises to conduct accurate analysis of active calcium content. The quality of calcium-based additives will prevent enterprises from purchasing fake and shoddy products and cause the quality of steel products to be substandard. The development of active calcium analysis instruments in calcium-based additives will help enterprise laboratories to carry out calcium-based additives and active calcium analysis projects. Formulate quality standards for calcium-based additives to ensure the quality of steelmaking products and maintain the company's good social reputation

Images