What is heavy calcium carbonate?
Heavy calcium carbonate (GCC), also called heavy calcium, it is made from ground natural carbonate minerals, such as: calcite, marble and limestone. It is a commonly used powdered inorganic filler, it has advantages of high chemical purity, high inertness, good thermal stability, no decomposition below 400°C, low oil absorption, low refractive index, small abrasion value, non-toxic, good dispersibility and so on. Heavy calcium carbonate is one of the non-metallic minerals with the largest output and application worldwide. It is widely used in fields of rubber, plastics, paper-making, coatings, inks, toothpaste and food additives.
Application effects of heavy calcium in rubber industry
The application effects are mainly reflected in the following aspects:
✱ Improve processing performance
Heavy calcium is easy to mix and disperse. Proper addition of it can improve the fluidity of rubber, facilitate molding, make the product size more stable, as well as improve processing efficiency and reduce production costs.
✱ Play a reinforcing and semi-reinforcing role
Rubber products with ultra-fine or micro-fine calcium carbonate filled can obtain higher expansion strength, wear resistance and tear strength than pure rubber products. The finer the calcium carbonate particles, the more obvious the improvement of expansion strength, tear strength and flexibility of rubber.
✱ Reduce production cost
Since heavy calcium carbonate is cheap, it can replace some high-cost additives, reducing production cost of rubber products. At the same time, adding it as filler can also improve the performance and quality of rubber products, increasing the added value of products.
✱ Improve anti-aging property
Under natural conditions of strong light and high humidity, rubber products are prone to aging and deterioration. Adding heavy calcium carbonate as filler can slow down the aging of rubber products and increase their service life.
Overview
With the rapid development of rubber industry, the demand for heavy calcium carbonate is constantly increasing, its application is also becoming more and more extensive, so the processing requirements for calcium carbonate will become more and more stringent, and the grinding and classifying of it will be more refined and standardized. Qingdao Epic Powder Machinery Co., Ltd. has been committed to the research and development of powder processing equipment for many years. The ball mill it developed is very suitable for fine grinding of calcium carbonate. At the same time, Qingdao Epic has developed ball mill -classifier system to form a ball mill-classifier production line. This production line is an internationally advanced production line for processing of non-metallic minerals. It has high reputation among domestic and foreign customers.
If you are interested in ball mill – classifier system from Qingdao Epic, please feel free to contact.
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