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Xintai Group: Let’s talk about the uses of calcium aluminate powder.

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Industry News

2022-08-18

Electrofused pipe fittings made of calcium aluminate (pre-fused aluminocalcium slag) are primarily used in LF furnaces, ladle refining furnaces, and converter steelmaking processes to remove impurities such as sulfur and oxygen from molten steel, thereby reducing the content of harmful elements and contaminants in the steel. They are suitable for 16Mn steel, medium-carbon steel, and high- and high-alloy steels. These products have long been widely adopted in developed countries such as South Korea, Japan, and European and American nations.

Electrofused pipe fittings made of calcium aluminate (pre-melted aluminocalcium slag) are primarily used in LF furnaces, ladle refining furnaces, and converter steelmaking processes to remove impurities such as sulfur and oxygen from molten steel, thereby reducing the content of harmful elements and contaminants in the steel. They are suitable for 16Mn steel, medium-carbon steel, and high- and high-alloy steels. These products have long been widely adopted in developed countries such as South Korea, Japan, and European and American nations.

The calcium aluminate components in our company’s electric-fused fittings are uniformly distributed, have a low melting point, and melt at an accelerated rate, thereby reducing smelting time. These fittings are fluoride-free, do not corrode furnace charge or steel ladles, feature a high-density structure, are non-hygroscopic, and are easy to store and transport. Thanks to their stable phase composition and rapid slag formation, they significantly reduce dust hazards during smelting and help stabilize the refining process. Moreover, they contain minimal residues of oxides, nitrogen, carbon, and other impurities, which in turn enhance the quality of construction steel. Customer feedback confirms that the stability curve of our electric-fused calcium aluminate fittings over time follows a perfectly linear function. This effectively avoids the wave-like or jagged curves typically seen in mid- and low-grade products (such as calcined materials and products from aluminum melting furnaces), which often lead to numerous undesirable conditions in metallurgical production.

Xintai Group: What exactly is the commonly referred-to calcium aluminate powder?

Calcium aluminate powder is a specialized material produced by processing high-quality aluminous bauxite and dolomite through crushing, drying, ball milling, billet formation, calcination, and support with slag micro-powder to create polyaluminum chloride—a water treatment agent. It appears as a grayish-white industrial product, slightly soluble in water; its aqueous solution is mildly alkaline, with a pH value of approximately 11.

Calcium aluminate powder reacts vigorously with strong alkaline inorganic substances, releasing a significant amount of heat. In acidic environments, the leaching rate of aluminum oxide from calcium aluminate can exceed 90%. Using calcium aluminate powder as a raw material to produce polyaluminum chloride—a water treatment agent—can simplify the production process in Gongyi City, streamline operational procedures, improve product quality, reduce costs, and minimize capital allocation.

Xintai Group: Key Characteristics of Calcium Aluminate Powder

1. It generates low heat, has a high sodium bisulfate content, and a low calcium hydroxide content, enabling the production of solid polyaluminum chloride with a sodium bisulfate content exceeding 30%.

2. Acid consumption is reduced, significantly lowering costs and resolving the challenge of producing more than 30% of sodium bisulfate from calcium aluminate, which previously could not be directly manufactured into such products.

Xintai Group: A Detailed Introduction to Calcium Aluminate Powder

Calcium aluminate powder is the primary raw material for water treatment agents. Its main active components include calcium hydroxide, aluminum oxide, and various compounds, all of which exhibit strong reactivity. By adopting a one-step acid-solubilization process to produce water treatment agents, significant savings can be achieved in terms of human resources and energy consumption, while also enabling substantial cost control. Moreover, this method boasts simple and easy-to-master process technology. Calcium aluminate powder exhibits highly specific reactions with strong inorganic bases and can initiate the reaction even at room temperature. It releases a large amount of heat and heats up rapidly; the dissolution rate of aluminum oxide can exceed 90%. When used as a raw material for producing liquid or solid polyaluminum chloride, it optimizes the manufacturing process, reduces costs, and enhances product quality—making it the raw material of choice for most polyaluminum chloride manufacturers worldwide today.

Xintai Group: Thank you all for watching. See you next time!

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