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Device and method for measuring crystallization starting temperature of high-temperature slag based on conductivity

A technology of crystallization temperature and electrical conductivity, which is used in measurement devices, analytical materials, material crystallization, etc., can solve the problems of poor measurement data accuracy and stability, large equipment loss, and complicated operation, and achieves low equipment requirements and low costs. , the effect of simple equipment operation

Inactive Publication Date: 2021-12-03
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of relatively poor accuracy and stability of measurement data, cumbersome operation, large equipment loss and high cost when measuring the crystallization temperature of mold flux in the prior art, and provides a Device and method for measuring the crystallization temperature of high-temperature slag based on electrical conductivity

Method used

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  • Device and method for measuring crystallization starting temperature of high-temperature slag based on conductivity
  • Device and method for measuring crystallization starting temperature of high-temperature slag based on conductivity
  • Device and method for measuring crystallization starting temperature of high-temperature slag based on conductivity

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Embodiment 1

[0062] In this example, the analytical reagent of Sinopharm is used as the raw material, and the composition of the high-temperature melt is No.1: *CaO=50.82wt%, SiO 2 =29.04wt%, Al 2 o 3 =3.13wt%, F - =10.44wt%, MgO=1.57wt%, Na 2 O=9.4wt%; No.2: *CaO=39.57wt%, SiO 2 =30.43wt%, B 2 o 3 =5wt%, F - =10wt%, Li 2 O=5wt%, Na 2 O=5wt%, BaO=5wt%; No.3: *CaO=40.83wt%, SiO 2 =29.17wt%, B 2 o 3 =5wt%, F - =10wt%, Li 2 O=5wt%, Na 2 O=5wt%, BaO=5wt%; No.4: *CaO=42.00wt%, SiO 2 =28.00wt%, B 2 o 3 =5wt%, F - =10wt%, Li 2 O=5wt%, Na 2 O=5wt%, BaO=5wt%, where *CaO is CaO+56 / 78CaF 2 .

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Abstract

The invention discloses a device and method for measuring the crystallization starting temperature of high-temperature slag based on conductivity, and belongs to the technical field of metallurgical slag performance detection. The device is mainly composed of a conductivity testing system, a heating system, a lifting system, an atmosphere control system and a temperature control system, and is used for measuring the crystallization starting temperature of the high-temperature slag, particularly, a precise LCR digital bridge and a molybdenum rod are used, a four-probe method is adopted for recording the conductivity value in the continuous cooling process of the slag in real time, and finally the crystallization starting temperature of the slag is determined. According to the technical scheme, the temperature in the furnace, the bottom end of the molybdenum rod and the depth of the molybdenum rod inserted into the high-temperature slag can be accurately controlled, the resistance of the molybdenum rod and a wire and the influence of the polarization effect on the high-temperature slag are eliminated, and the conductivity value in the slag cooling process is accurately measured; and thus, the crystallization starting temperature of the slag is obtained based on the conductivity-temperature curve.

Description

technical field [0001] The invention belongs to the technical field of metallurgical slag performance detection, and more specifically relates to a device and method for measuring the crystallization temperature of slag based on electrical conductivity. Background technique [0002] In the process of iron and steel smelting, slag plays a vital role in separating or absorbing inclusions, protecting metals from environmental pollution, and reducing metal heat loss. steel” general consensus. Among them, mold slag, as a functional material that guarantees continuous casting production and excellent quality of slab, has the most stringent and demanding performance requirements, and needs to comply with the continuous update of steel variety research and development and the continuous improvement of quality requirements. Add the mold slag on the molten steel surface of the mold, flow into the gap between the billet and the wall of the mold after melting, solidify on the side of t...

Claims

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Application Information

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IPC IPC(8): G01N25/14G01N27/04
CPCG01N25/147G01N27/04
Inventor 张晨吴婷雷杰王海川鲍光达廖直友
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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