How to solve problems such as black stone pollution?

Common black stones in stone materials

Common black stones: black granite, black marble, black artificial stone

Black granite

01. Black Sands

02. China Black

03. Mongolian Black

Lapis Niger

01. Black Gold Flower

02. Black and white roots

03. Silver White Dragon

Black artificial stone

01. Quartz stone

Nowadays, black stone is rarely used in large areas and is mostly used for edge decoration, countertops, etc. People often find that after using black stone for a period of time, it will fade, that is, the original color will become lighter and not as bright as the original board. The reason is that the color of natural stone is naturally formed, and the quality of the color is determined by the pigment ions and internal structure contained in the stone.

At the same time, the order in which the different minerals that make up stone form can also affect color changes, which is called the color difference. Therefore, in order to ensure that the color of the stone is basically consistent, the stone processing factory adopts a coloring process (i.e., using a coloring agent) to solve the problem of color difference in the stone, with the aim of making the stone have a better selling appearance. Due to factors such as natural weathering, friction, and pollution, the discoloration of dyed black stone is particularly prominent after paving, seriously affecting the decorative effect of the stone.


In the past, people generally adopted the following two methods to solve this problem:

01 Use a “melanin” staining agent, that is, use a coloring process for treatment. However, due to the fact that the coloring process of stone processing plants uses the method of soaking the original board, while the paved stone can only be coated with a “staining agent” on the surface, the fixation effect is significantly different, and the latter usually only lasts for about three months.

02 Use “polishing and protective agent”, that is, apply a protective agent on the surface of the stone to restore the color of the stone. But this method can only achieve a maximum restoration rate of 70% for the color of black stone, and if these two methods can only deepen the color of smooth stone, they cannot achieve the effect of brightening.

Operating steps

1. Spray an appropriate amount of clean water on the area to be polished.

2. Use 1-4 # shallow flip pads for polishing and polishing treatment.

3. Color difference reduction: Mix CR-7B and POTEA black powder, and use a portable polishing machine with 0 # steel wire cotton to grind the slurry dry and produce luster.

4. Use a portable polishing machine with a soft white polishing pad to dry and polish CR-6A until it is shiny.

The difference between this process and traditional processes is:

01: The operation is simple and fast. Traditional processes such as grinding, coloring, protective treatment, and polishing require at least a few days for a tabletop, while new processes can be completed in less than an hour.

02: The traditional process uses grinding discs for polishing, while the new process uses shallow flipping pads for polishing. As is well known, black stone has a particularly high technical requirement for polishing, and it is easy to leave grinding marks when polished with a grinding disc without paying attention, making it difficult to repair. When using a shallow flip pad for polishing, it is not easy to leave marks, and the surface is more delicate and has a higher glossiness.

03: The reduction rate of color is over 95%, with almost no difference from the original board.

04: Crystallization polishing and color difference reduction are carried out simultaneously,

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