Utilization of Stone Slag and Powder Produced by Stone Processing

With the continuous development and expansion of the stone industry, there are more and more surplus materials (leftovers and leftovers) in stone processing enterprises, especially the stone powder generated after the sawing of stone materials. Despite the adoption of circulating water treatment and secondary precipitation, over time, waste materials and stone powder accumulate into mountains, not only occupying land for a long time, but also seriously polluting the environment, which has become a major chronic disease that has long restricted the development of enterprises.

Moreover, with the deepening of the concept of saving resources and protecting the environment, the country has also put forward higher requirements for environmental protection of enterprises. The Stone Industry Association has also held several seminars in accordance with the requirements of national environmental protection and relevant authoritative departments, and will increase the development, processing, and protection of natural resources in the future. This fully demonstrates that controlling pollution, optimizing the environment, and saving resources are the keys to accelerating industrial restructuring and transforming the economic growth mode of the stone industry at present.

So how do we turn the waste, slag, and stone powder generated in stone production into treasure?

Although the research on the utilization of stone waste in the stone industry in China has not been conducted for a long time, stone practitioners in China have developed a variety of utilization methods for stone waste, waste residue, and stone powder.

The following is an introduction to the utilization methods of major domestic stone waste, slag, and stone powder:

1. Used in the production of artificial sand, foundry sand, and waterproof materials such as asphalt felt debonding powder. Used in the casting of steel parts, it is easy to peel off the film, and the casting is smooth.

2. Filling agents and paint fillers for chemical products, architectural decoration and painting, etc.

3. Instead of baking soda, it can be used in leather making. Stone powder can replace large baking soda to produce leather acid, and replacing small baking soda can increase the alkalinity of soldering tanning. Using this process can reduce labor intensity and improve economic benefits.

4. As a combustion aid and desulfurizer for domestic coal, adding 5% - 10% marble powder to production coal can not only save coal, but also support combustion, reduce the emission of sulfur dioxide gas, and improve the indoor and outdoor environment.

When making welding electrodes, adding stone powder can play a slag forming role and prevent the entry of oxygen and nitrogen into the molten pool and arc.

6. The waste stone slurry produced in various processes in stone processing can be used as cement raw materials, asphalt pavement fillers, and chemical fuel fillers after sedimentation, dehydration, and drying.

7. Add appropriate cement, curing agent, and small stones to the stone slag, and then mix and press the embryo. Can be made into new wall materials.

It can be seen that the comprehensive utilization of natural stone waste has a very good prospect. Today, when the stone industry as a whole enters the era of low-profit stone, as long as it is good at innovation, it can also produce good marginal effects.