The difference between calcite powder and marble powder

The powders produced by the grinding of marble and calcite are called heavy carbonic acid, but their application performance is quite different. The following author distinguishes these two powders based on his years of experience in carbonic acid production. and the app's people are helpful. dolomite powder price

 1. Distinguish from the ore itself

 Calcite is a mineral with very clear cleavage and light transmittance. The surface of the ore is a very clear plane. No matter how you break it, you can see the plane. Calcite is also divided into large calcite and small calcite. The clearer and more regular cleavage is large calcite, and the transparency of large calcite is very high. The cleavage disorder is the small square solution. Calcite ore has three shades, milky white phase, yellowish phase, and reddish phase. The shades vary from place to place.

 Marble is divided into coarse concentrate and fine-grained ore, and the tone is both bluish-white. Basically distributed in Sichuan, Guangxi, Zhejiang, Anhui, Shandong and other places. The quality of ore varies from region to region.

 From the perspective of microscopic crystal structure, calcite belongs to the hexagonal crystal system; marble crystals are generally cube-shaped.

 2. Distinguish from the carbonic acid content and the appearance of the powder

 The main components of calcite and marble are carbonic acid, the content of good calcite can be above, and the content of good marble is about 96-. Calcite pink is relatively soft, with yellowish and reddish hues. Marble powder is slightly bluish and blue, and the feeling of poor whiteness will be darker.

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 3. From the distinction

 Calcite has a lower Mohs hardness than marble. The hardness is about 3. The hardness of marble is 3-4. Therefore, with the same power crushing equipment, calcite is much more efficient than marble.

 4. Distinguish from powder application performance

 Because the ore quality of calcite is very good in crystallization and cleavage, the dispersibility, fluidity, particle size distribution, oil absorption value and covering rate of the powder are better than those of marble. The whiteness of good calcite powder can be above 95-97 (4 mesh powder), the whiteness of marble is lower, the better one is about 93-95 (4 mesh), and the two powders play their respective roles in downstream customers. their respective roles. The price of calcite powder is slightly higher than that of marble powder. Therefore, downstream customers will choose the powder that suits them according to their cost and quality requirements. The purity of calcite can be used in various fields of food, such as toothpaste, food additives, edible tablets, feed additives and so on. And can pass the various indicators of the European Union. For some high-demand enterprises, calcite powder is. Because the hue, whiteness, dispersibility and temperature resistance of calcite powder and marble powder are different, downstream customers who have requirements for product hue can also choose the use of powder.

 5. Analysis of industry application examples

 Plastic industry: both marble powder and calcite powder are used, and they are used according to customer requirements.

 Under the same formula conditions, using the same or similar particle size distribution calcite weight and marble weight filling in plastic products will show different differences, mainly showing the difference in luster and physical mechanics (tensile force and impact force).

 a Color difference:

 Due to the difference in trace metal elements contained in calcite and marble, the color of the powder is also different. The product made of calcite powder filled in plastic will appear creamy yellow or creamy red (that is, the magnetic white, milky white in the industry). ), the color is soft and the covering power is good.

 b Differences in physical mechanics:

 Due to the different crystal structures of calcite and marble, the tensile force and impact force will be different after filling in plastic products. Calcite belongs to the hexagonal crystal system, and the crystals are generally jujube-shaped, with relatively large long and short diameters; marble crystals are generally cube-shaped, with relatively small long and short diameters. The powder with larger length and diameter is filled with plastic, which has a reinforcing effect, and the mechanical properties such as tensile force and impact force of plastic products are better. For example, calcite weight and marble weight with the same particle size distribution are filled with PVC pipe profiles and other products under the same formula conditions. Products made from marble powder are more brittle and less tough than calcite powder.