CalciumRemover Flux 1# is a highly efficient auxiliary material specifically designed for the precise removal of excess calcium during the aluminum alloy smelting process. Addressing quality issues such as reduced toughness, decreased fluidity, and susceptibility to hot cracking caused by excessive calcium content in aluminum alloys, this product utilizes scientifically formulated active components to react rapidly and stably with calcium within a smelting temperature range of 710-740℃, generating easily separable compounds and effectively reducing residual calcium in the alloy. This calcium remover comes in convenient 5 kg bags, making storage and application very simple. Its core application lies in "on-demand addition"—users can precisely calculate the dosage based on the actual detected calcium content, using 7-8 kg of this product per 1 kg of calcium removed, avoiding waste and ensuring treatment effectiveness. Whether for recycled aluminum companies processing high-calcium remelting materials or aluminum alloy foundries fine-tuning the composition of specific grades, this product provides a reliable and controllable calcium removal solution.
Key Advantages
Precise Calcium Removal with Significant Results
CalciumRemover Flux 1# is optimized for its affinity reaction with calcium. Within the recommended temperature range of 710-740℃, it can quickly capture excess calcium in the melt and form a stable slag phase, resulting in outstanding calcium removal efficiency. Approximately 1 kg of calcium can be effectively removed with every 7-8 kg of calcium remover. The precise formulation allows process engineers to flexibly adjust the dosage based on the actual excess amount, avoiding over- or under-treatment.
Wide Process Window and Stable Operation
The applicable temperature range is set at 710-740℃, covering the commonly used temperature range in most aluminum alloy smelting, holding, and refining processes, without requiring additional adjustments to smelting equipment or significant changes to existing processes. At this temperature, the calcium remover reacts gently, without producing violent splashing or fumes, ensuring operational safety and reducing high-temperature corrosion to furnace linings and tools.
Improved Alloy Quality and Reduced Scrap Rate
Excess calcium can make aluminum alloys brittle, reduce ductility, and increase the tendency for hot cracking. After effectively controlling the calcium content using this product, the mechanical properties of the alloy (such as elongation and tensile strength) are restored, the internal structure of the casting is more uniform, the surface finish is improved, and scrap due to excessive calcium is significantly reduced, increasing the finished product qualification rate.
Add as needed, economical and cost-effective. The product design follows the principle of "adding according to actual needs." Users do not need to blindly add according to a fixed ratio. Instead, they first test the calcium content in the furnace, calculate the weight (kg) of calcium to be removed, and then multiply by 7-8 times to obtain the dosage (kg) of calcium remover. This precise dosing mode ensures the treatment effect while minimizing auxiliary material consumption costs.
Practical packaging specifications for easy on-site management. Standardized packaging of 5 kg/bag, with a moderate weight per bag, facilitates manual handling and feeding, and is also beneficial for inventory statistics and batch management. The sealed packaging effectively prevents the product from getting damp and deteriorating, ensuring the activity and stability of each use.
Product Applications
**Calcium Impurity Removal in Recycled Aluminum Alloy Smelting**
When producing aluminum alloys using recycled raw materials such as scrap aluminum and old aluminum, impurities with high calcium content (such as certain coatings and inclusions) are often present in the raw materials, leading to excessive calcium content in the melt. Aluminum Alloy Calcium Remover No. 1 can be added before or after the regular refining process or during a dedicated calcium removal step to effectively reduce the calcium content to within the allowable range for the target grade, improving the purity and market value of recycled aluminum products.
**Composition Fine-tuning for Specific Aluminum Alloy Grades**
Some high-requirement aluminum alloy grades (such as certain 5-series and 6-series alloys) have strict upper limits on calcium content. If excessive calcium is accidentally introduced during smelting or batching, this product can be used as a remedial measure, selectively removing calcium without affecting the content of other beneficial elements (magnesium, silicon, copper, etc.), helping the melt quickly return to the standard composition range.
**Prevention of Casting Defects and Improvement of Machining Performance**
For processes such as die casting, sand casting, and low-pressure casting, excessive calcium content reduces the flow properties of aluminum alloys, leading to poor filling and increasing the risk of hot cracking and mold sticking in castings. Adding this product at 710-740℃ significantly improves melt purity, enhances filling capacity, and reduces shrinkage porosity, gas pockets, and microcracks, resulting in castings with higher density and better machinability.
Flexible Use in Melting Processes: This product can be added after the aluminum alloy has completely melted but before refining, utilizing the reaction time to allow for thorough calcium separation; it can also be used in conjunction with refining agents and covering agents to achieve synergistic treatment of calcium removal, degassing, and slag removal. The 5 kg/bag packaging facilitates multiple or batch additions, allowing for flexible adjustment of the total dosage based on furnace capacity (from hundreds of kg to tens of tons).
Removal of Calcium Residue During Regular Furnace Maintenance: In smelting furnaces and holding furnaces operating continuously for extended periods, calcium deposits may gradually accumulate on the furnace walls or bottom, causing repeated contamination of new melt. Regular "furnace cleaning" with this product effectively dissolves and removes these stubborn calcium residues, extending furnace lining life and ensuring batch-to-batch compositional stability.
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