A method for testing the moisture content of continuous casting flux

Abstract

This invention discloses a method for testing the moisture content of continuous casting protective slag, comprising: first, drying a stainless steel pan in a drying oven, removing it after a certain period of time, and cooling it to room temperature in a desiccator; then, placing the protective slag to be tested into the stainless steel pan, accurately weighing it using an analytical balance and recording it as m1, and spreading it as evenly as possible; then placing it in the drying oven to dry, removing it, cooling it to room temperature in a desiccator, accurately weighing it using an analytical balance and recording it as m2; and calculating the moisture content. The purpose of this invention is to provide a method for testing the moisture content of continuous casting protective slag, using a comparison of the mass before and after heating to determine the moisture content of the continuous casting protective slag, and is simple to operate, highly accurate, and low in cost.

Description

Technical Field

[0001] This invention belongs to the field of quality inspection technology for continuous casting processes in the field of steelmaking technology, and particularly relates to a method for testing the moisture content of continuous casting protective slag. Background Technology

[0002] In the continuous casting process of steel, the protective slag plays a crucial role. It effectively isolates air, prevents secondary oxidation of molten steel, improves lubrication between the billet and the mold wall, and regulates the heat transfer rate of the billet. This is of great significance for improving billet quality and the stability of continuous casting production. The moisture content of the protective slag is one of its important performance indicators; its level directly affects the lubrication and heat transfer efficiency of the protective slag within the mold, as well as the surface quality of the billet.

[0003] Currently, existing methods for determining the moisture content of protective slag, such as the moisture analyzer method, can measure the moisture content of protective slag relatively accurately, but the equipment is expensive, the testing process is complex, and the technical requirements for operators are high, making it difficult to widely apply in general steel production enterprises.

[0004] Therefore, developing a method for determining the moisture content of protective slag that is easy to operate, highly accurate, low in cost, and can meet the actual production needs is of great practical significance. Summary of the Invention

[0005] The purpose of this invention is to provide a method for testing the moisture content of continuous casting protective slag. The method uses a comparison of the mass before and after heating to determine the moisture content of the continuous casting protective slag. The method is simple to operate, highly accurate, and low in cost.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention discloses a method for testing the moisture content of continuous casting mold flux, comprising: First, place the stainless steel tray in a drying oven to dry, and after a certain period of time, remove it and place it in a desiccator to cool to room temperature; Next, the protective residue to be tested is first placed into a stainless steel pan, accurately weighed using an analytical balance, and recorded as m1, and then spread out as flat as possible. Then place it in a drying oven to dry, take it out and place it in a desiccator to cool to room temperature, weigh it accurately using an analytical balance, and record it as m2; Calculate moisture content: M = (m1 - m2) / m1×100%; M----Moisture content, % m1----Mass of the protective slag sample and the stainless steel pan before heating, in g; m2----The mass of the protective slag sample after heating and the stainless steel pan, in grams.

[0007] Furthermore, the stainless steel disc has dimensions of 200mm × 300mm.

[0008] Furthermore, the stainless steel pan is dried at 105±5℃.

[0009] Furthermore, the drying time of the stainless steel tray is 0.5 hours.

[0010] Furthermore, the protective slag to be tested is dried at 105±5℃.

[0011] Furthermore, the drying time of the protective slag to be tested is 0.5 h.

[0012] Furthermore, this method is simple to operate, highly accurate, and inexpensive.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows: The purpose of this invention is to provide a method for testing the moisture content of continuous casting protective slag. The method uses a comparison of the mass before and after heating to determine the moisture content of the continuous casting protective slag. The method is simple to operate, highly accurate, and low in cost.

[0014] After implementation, this invention enables relatively accurate, convenient, and rapid testing of the moisture content of the mold flux. Measuring and controlling the moisture content of the mold flux has important guiding significance for steelmaking continuous casting production. Detailed Implementation

[0015] A method for testing the moisture content of continuous casting mold flux includes: First, place a 200mm × 300mm stainless steel tray in a drying oven at (105±5)℃ and dry for 0.5h. After removing it, place it in a desiccator to cool to room temperature. Next, place the protective residue to be tested (about 500 g) into a 200 mm × 300 mm stainless steel pan, weigh it accurately using an analytical balance, record it as m1, and spread it out as flat as possible.

[0016] Then place it in a drying oven at (105±5)℃ for 0.5h, remove it and place it in a desiccator to cool to room temperature, weigh it accurately using an analytical balance and record it as m2.

[0017] Calculate moisture content: M = (m1 - m2) / m1 × 100% M----Moisture content, % m1----Mass of the protective slag sample and the stainless steel pan before heating, in g; m2----The mass of the protective slag sample after heating and the stainless steel pan, in grams. Example

[0018] Take a protective slag, the composition of which is shown in Table 1; first, put a 200mm×300mm stainless steel plate into a (105)℃ drying oven and dry it for 0.5h, then take it out and place it in a desiccator to cool to room temperature; Next, place the protective residue to be tested (500 g) into a 200 mm × 300 mm stainless steel pan, weigh it accurately using an analytical balance, record it as m1, and spread it out as flat as possible.

[0019] Then place it in a (105)℃ drying oven for 0.5h, take it out and place it in a desiccator to cool to room temperature, weigh it accurately with an analytical balance and record it as m2.

[0020] Calculate moisture content: M = (m1 - m2) / m1 × 100% M----Moisture content, % m1----Mass of the protective slag sample and the stainless steel pan before heating, in g; m2----The mass of the protective slag sample after heating and the stainless steel pan, in grams. The moisture test results are shown in Table 2.

[0021] Table 1 Composition of protective flux

[0022] Table 2 Moisture content results

[0023] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for testing the moisture content of continuous casting mold flux, characterized in that: include: First, place the stainless steel tray in a drying oven to dry, and after a certain period of time, remove it and place it in a desiccator to cool to room temperature; Next, the protective residue to be tested is first placed into a stainless steel pan, accurately weighed using an analytical balance, and recorded as m1, and then spread out as flat as possible. Then place it in a drying oven to dry, take it out and place it in a desiccator to cool to room temperature, weigh it accurately using an analytical balance, and record it as m2; Calculate moisture content: M = (m1 - m2) / m1×100%; M----Moisture content, % m1----Mass of the protective slag sample and the stainless steel pan before heating, in g; m2----The mass of the protective slag sample after heating and the stainless steel pan, in grams.

2. The method for testing the moisture content of continuous casting mold flux according to claim 1, characterized in that: The stainless steel tray measures 200 mm × 300 mm.

3. The method for testing the moisture content of continuous casting protective slag according to claim 1, characterized in that: The stainless steel pan is dried at 105±5℃.

4. The method for testing the moisture content of continuous casting protective slag according to claim 3, characterized in that: The drying time for the stainless steel tray is 0.5 hours.

5. The method for testing the moisture content of continuous casting protective slag according to claim 1, characterized in that: The protective slag to be tested was dried at 105±5℃.

6. The method for testing the moisture content of continuous casting protective slag according to claim 6, characterized in that: The drying time of the protective slag to be tested is 0.5 h.

7. The method for testing the moisture content of continuous casting protective slag according to claim 1, characterized in that: This method is simple to operate, highly accurate, and inexpensive.

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