Guidelines for the use and storage of TSP powder: Don't overlook these details
Ground calcium carbonate powder (GCC powder), as a highly versatile inorganic filler, is widely used in various industries such as building materials, plastics, paper-making, and food. It appears to be stable and easy to store. However, improper storage and non-standard use can not only affect product performance but also lead to raw material waste and increased production costs. This practical guide covers key details throughout the entire storage and usage process, helping you avoid common issues and ensuring the quality of raw materials and production outcomes.
Storage: Moisture prevention and contamination avoidance are key, and details determine quality
Ground calcium carbonate powder has stable physical properties, but it is extremely prone to moisture absorption and agglomeration, which is the most alarming issue during storage. Once it becomes damp, not only will its dispersibility deteriorate, but it will also affect the molding and performance of downstream products. Food-grade ground calcium carbonate powder can even breed microorganisms due to moisture absorption, crossing the regulatory red line.
The preferred storage location is a dry, ventilated, and shaded indoor warehouse. Open storage is strictly prohibited. Avoid exposure to rainwater and direct sunlight. The ground should be moisture-proofed, and pallets or wooden boards can be laid to elevate the ground calcium carbonate powder packaging bags by 10-15 cm, keeping them away from ground moisture. The packaging bags must be intact, and damaged bags should be sealed and replaced promptly to prevent dust leakage and impurity contamination. At the same time, avoid storing them in the same warehouse with odorous, volatile, toxic, or harmful substances to prevent cross-contamination and contamination from off-flavor. Food-grade ground calcium carbonate powder should be stored in a separate area, strictly isolated from industrial-grade raw materials to eliminate cross-contamination.
The stacking height should be reasonable, adhering to the principle of "being wider at the bottom and narrower at the top, with each layer being stable". This is to avoid crushing the bottom packaging bags due to excessively high stacking, which could lead to the loss of raw materials due to caking. Regular checks should be made on the humidity in the warehouse, and it is recommended to keep the humidity below 60%. During the rainy and damp seasons, desiccants can be placed to enhance ventilation and prevent raw materials from becoming damp and caking. Unsealed raw materials should be promptly sealed and used preferentially.
Usage: Operate in a standardized manner, adapt to scenarios without falling into pitfalls
Before use, it is necessary to inspect the state of the ground calcium carbonate powder to ensure that it is free from caking, impurities, and moisture. Caking raw materials need to be crushed and sieved in advance, and only those that meet the standards can be put into use to avoid particle blockage of equipment and affecting product uniformity. Different grades and finenesses of ground calcium carbonate powder must not be mixed, especially food-grade and industrial-grade. They must be stored in separate areas and handled with dedicated tools to prevent misuse and safety risks.
When adding ingredients, strictly follow the production ratio and measurement to avoid excess or deficiency. Excess will reduce the toughness of the product and affect its molding, while too little will fail to achieve the effect of filling, cost reduction, and performance improvement. The ultrafine heavy calcium powder has high dispersion requirements. When adding, slowly feed the material and fully disperse it with a mixing device to prevent clumping and sedimentation, ensuring that the raw material is evenly distributed in the base material.
When using food-grade heavy calcium carbonate powder, operators must wear clean work clothes, gloves, and masks for hygiene protection. Tools should be dedicated and undergo regular disinfection and sterilization. Direct contact with bare hands is strictly prohibited. The entire process should comply with food safety production standards, and samples should be retained from each batch for traceability and testing.
Additional precautions
During transportation, it is necessary to take rain and moisture prevention measures, use enclosed vehicles, avoid bumps and damage, and handle with care during loading and unloading. During production operations, wear dust masks, ensure dust protection, maintain ventilation in the workshop, and reduce dust flying. Follow the "first-in, first-out" principle, give priority to using raw materials that have been stored for a longer time, and avoid long-term backlog and deterioration.
The core of the use and storage of TSP (Tricalcium Phosphate) powder lies in moisture prevention, stain prevention, and standardized classification. These seemingly minor details directly affect the utilization rate of raw materials and the quality of the final product. Whether it is for industrial production or food-grade applications, strictly adhering to the guidelines can not only ensure smooth production but also reduce waste and costs, allowing TSP powder to achieve its optimal use value.