碳酸钙325-11000目

一、化学式：CaCO3
二、英文名：heavy calcium carbonate
三、物理性质：

重质碳酸钙简称重钙是由天然碳酸钙矿物如方解石、大理石磨碎而成。无毒、无刺激性、无味、色泽好、白度高，对其它颜色的干扰小，易着色、硬度低，对加工设备损轻，化学性稳定，属惰性填料，热分解温度为800 o C以上，易干燥，水分易除去，无结晶水，而且价格低廉。

四、用途：

重质碳酸钙可分为普通重质碳酸钙和超细重质碳酸钙等。重质碳酸钙通常用作填料，还广泛用于人造地砖、橡胶、塑料、造纸、涂料、油漆、油墨、电缆、建筑用品、食品、医药、纺织、饲料、牙膏等日用化工行业，作填充剂起到增加产品的体积，降低生产成本。

①在橡胶中的应用

用于橡胶中，可增加橡胶的体积，改善橡胶的加工性，起半补强或补强作用，并可调节橡胶的硬度。

②在塑料中的应用

塑料工业是重质碳酸钙最大的消费领域，细化的重钙粉，能明显提高塑料复合材料界面的强合强度及力学性能。塑料中使用微细重钙粉，既可降低其制造成本，又可提高和改其性能。

③在造纸中的应用

造纸工业用重质碳酸钙主要有两个用途，一是作为填料，二是作为涂层。目前，我国大多数造纸厂使用的是酸法造纸工艺，采用的填料主要是高岭土和滑石粉，重钙会取代酸式施胶，重钙粉作为填料将在很大范围内代替滑石粉或高岒土。

④在油漆、涂料中的应用

油漆、涂料也是重钙的主要消费领域之一，一般是作为填料和体质颜料使用，主要应用的品种是建筑涂料。在国外欧美等工业发达国家，胶粘剂也是重钙的主要消费领域之一，但胶粉剂对重钙的要求较高，一般要求细度＞1250目.除此之外，粒度细、纯度高、白度好的重质碳酸钙还被应用在油墨、医药、化妆品等领域中。

The English version

Calcium carbonate (325-11000 mesh

: a, chemical formula CaCO3

English name: heavy calcium carbonate

Physical properties:

Heavy calcium carbonate coarse whiting, which is made of natural calcium carbonate minerals such as calcite, marble grinding. Non-toxic, non-irritating, tasteless, good colour and lustre, high whiteness, small disturbance to the other color, easy coloring, hardness is low, the processing equipment damage light, chemical stability, inert filler, thermal decomposition temperature is above 800 o C, easy drying, moisture is easy to remove, no water of crystallization, and the price is low.

4, usage:

And heavy calcium carbonate can be pided into ordinary calcium carbonate superfine heavy calcium carbonate, etc. Usually used as a filler, heavy calcium carbonate is widely used in artificial floor tile, rubber, plastic, papermaking, coating, paint, printing ink, cable, construction supplies, food, medicine, daily chemical industry such as textile, feed, toothpaste, as a filling agent rise to increase the volume of products, reduce production costs.

1) application in rubber

Used in rubber, can increase the volume of the rubber, to improve the rubber processability, half reinforcing or reinforcing effect, and can adjust the hardness of rubber.

(2) application in plastic

Plastic industry is one of the largest consumption of heavy calcium carbonate, refining the coarse whiting powder, can obviously increase the plastic composites strong strength and mechanical properties of the interface. Plastic is used in fine coarse whiting powder, can reduce the manufacturing cost, but also improve and change its properties.

(3) application in papermaking

Papermaking industry with heavy calcium carbonate is mainly used for two purposes, one is for packing, 2 it is the coating. At present, our country papermaking process in most paper mills are using the acid method, using packing mainly kaolin and talcum powder, coarse whiting will replace acid type sizing, coarse whiting powder as the filler will replace the talcum powder in large range or high 岒 soil.

(4) application in paint and coatings

Paint and coatings is also one of the main consumption of coarse whiting, is commonly used as a filler and physical pigments, mainly the type of application is architectural coatings. Industrial developed countries such as Europe and the United States abroad, adhesive is also one of the main consumption of coarse whiting, but rubber powder of coarse whiting the demand is higher, general requirements fineness of > 1250 mesh. In addition, fine granularity, high purity and good whiteness of heavy calcium carbonate was also used in ink, pharmaceutical, cosmetics and other fields.