There are several ways to remove stone stains from Jinan bluestone.

It is recommended to use special stone products, such as strong concentrated cleaning agent, with a PH value of about 10.5. This kind of products can decompose the organic pollution on the stone surface and remove the surface protectant. When necessary, the cleaning agent can be mixed with the cleaning powder, which can prolong the reaction time of the compound and absorb the stains into the paste. Before using the compound, test small inconspicuous places, such as corners, and ensure that the stone surface is not covered with dark flower marks. Removing minor scratches is relatively simple, and there are many polishing powders on the market. However, when using polishing powder, it is mostly necessary to use a polishing machine or a single wiper.

Solution 2:

It is recommended to use liquid medicine, preferably a two-component enzyme cleaning agent, which can penetrate into the bottom of stone and filter dirt and dirt to the surface. Enzymes are particularly effective against plant stains. This kind of cleaning agent can be purchased from the agent of high-quality stone cleaning agent products.

If the effect of this method is still not obvious, it is recommended to mix the solution of enzyme cleaning agent with decontamination powder until a viscous ointment similar to peanut butter is formed. Apply the prepared ointment to the contaminated part, cover it with plastic film, and seal the surrounding area with adhesive tape. Keep the reaction time for 24 ~ 72 hours, and then scrape the paste with a small bamboo board. Do it again if necessary. Once the pollution is removed, it is suggested to protect the stone with permeability protectant to avoid being polluted again in the future.

If the marble surface dyed at the same time has scratches, it needs polishing. The choice of grinding powder needs to be decided by the constructor, which can be brick soil, cinder, sandpaper or emery. The process may be complicated, so it is recommended to leave it to professionals. It needs to be clear that for some plates with specifications of 305 X 305 X 10mm, the damage caused by high heels may also go deep into the stone, and it is difficult or almost impossible to polish scratches. In this case, it is best to consult an expert.

Solution 3:

As for the stains on the stones around the bathtub and the edge of the windowsill, the problem should be that these marbles have never been protected or properly maintained. Due to the poor effect of mild detergent, we recommend using neutral detergent and powder to make a slurry-like viscous mixture, smearing the paste on the stone surface, and then rubbing it with nylon pad. The role of powder in it is similar to that of abrasive, which helps to remove stubborn stains on the surface. If this method doesn't work, it is suggested to mix alkaline cleaning agent with clay powder to form a strong cleaning agent solution, and the rest of the operation procedures are the same as above.