How to control the moisture content of the protective slag?
Release time:
2020-08-01
Protective slag is an important auxiliary material in continuous casting production. Continuous casting protective slag Its application has greatly expanded and improved the varieties of steel used in continuous casting, the types of continuous casting sections, the quality of continuously cast billets, and the continuous casting production rate, making it an indispensable metallurgical auxiliary material.
Protective slag The moisture content can be divided into two types: adsorbed water and crystalline water. Moisture will cause the protective slag to agglomerate, reducing its quality. The water content should be limited to below 0.5%.
Certain substances in the matrix (such as soda water, solid sodium silicate, and block sodium silicate) have a strong absorption capacity. After absorbing moisture, they will Protective slag be packaged and rolled into a spherical shape, which will cause problems during continuous casting operation.
Protective slag The moisture absorption rate mainly depends on the type and particle size of the raw materials. The finer the particles, the greater the water absorption rate. If the particle size is 200 mesh, the water absorption rate of cement is 0.41%, the water absorption rate of solid sodium silicate is 3.24%, the water absorption rate of fluorite is 0.45%, the water absorption rate of soda water is 15.9%, and the water absorption rate of graphite is very small.
Protective slag Moisture control methods:
1. The raw material baking temperature should not be lower than 110. Appropriately extend the baking time.
2. The baked raw materials should be mixed and stirred in time, and the prepared slag powder should be sealed and packaged in time.
3. For steel grades with high quality requirements, it is best to Protective slag bake the raw materials to above 800 to remove crystalline water, or use pre-melting Protective slag 。
Luoyang Turner High Temperature Instrument Co., Ltd., with advanced equipment and technical experience, has been committed to the production of high-temperature laboratory equipment and reagents for many years. The company's main products include TNKRY series X-ray fluorescence detection, special X-ray fluorescence melting machine 、 High-temperature physical property testing instrument ，Anhydrous Lithium metaborate 、 Melting point and melting rate Measuring instrument, XRF flux 、 Fire assay cupel furnace ，Industrial Cupel furnace 。We always pay attention to customer needs, continuously upgrade technology, improve product quality, and enhance the company's core competitiveness, winning customers' trust and support with high-quality products and better services! Welcome users to leave messages and inquire about more protective slag-related issues.
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