Abrasive Copper slag

Abrasive Copper slag

Copper slag is a by-product of copper extraction by smelting. During smelting, impurities become slag which floats on the molten metal. Slag that is quenched in water produces angular granules which are disposed of as waste or utilized as discussed below

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Copper slag is a material that is used in various industries for different purposes. But what exactly is copper slag, and how is it created? To answer this question, we take a look at the melting and refining process of copper. Copper slag is in fact a material that is created during the melting of copper. During this melting, a large amount of soot and rock are created. The combination of these materials is called copper slag. Although copper slag was initially created as a by-product, today it is used in many ways. Among other things, it serves as a filling material in construction and an alternative to sand in the production of concrete. But that’s not all; copper slag is primarily used as an abrasive in the cleaning and preparing of various surfaces.


The use of blasting media is a widely used technique for preparing, cleaning and machining steel and other metal surfaces, for example. Copper slag is one of the possible abrasives that can be used. Other blasting media that can be considered are sand, glass, plastic or water. Blasting with copper slag is generally done for two different purposes. First of all, copper slag blasting is an effective way to remove mill scale, rust, dirt, paint and other coatings from metal surfaces. But copper slag blasting also serves another purpose. In fact, blasting can also be used to create a surface profile in a surface. By using copper slag blasting to produce a profile in the surface, it creates an adhesion layer for any new coating.



As mentioned, there are several different techniques available when it comes to blasting, of which the use of copper slag as a blasting agent is one. In general, blasting with copper slag works in the same way as all other blasting techniques. Blasting with copper slag consists of two ingredients. For cleaning and preparing of metal surfaces, the copper slag is combined with air. This combination of air and copper slag is then applied with a very high force to the surface. Because of the great force with which the copper slag is released onto the surface, dirt, rust, mill scale, paint and coatings are easily removed from the object. In addition, due to the violent impact of the copper slag into the metal surface, not only are dirt and coatings removed, but also the surface profile is created which serves as a new adhesion layer.


Blasting with copper slag has been performed successfully for many years. However, over the years, more and more disadvantages and dangers of blasting with copper slag have come to light. First of all, blasting with copper slag is not without danger. Studies have shown various dangers of working with copper slag. For example, various types of slag, including copper slag, can disintegrate into small particles during blasting. Inhaling these particles can result in unpleasant lung complaints. In some cases, copper slag can also contain traces of toxic metals such as arsenic, beryllium and cadmium. These metals not only have a negative effect on human health, but can also contribute to the pollution of air and water.

The health risks are not the only drawbacks to blasting with copper slag. While blasting can be very effective for removing dirt and coatings, this cleaning technique is not applicable to all materials. Some materials will be vulnerable to copper slag cleaning, which, if not done carefully, will cause damage to the surface. Partly because of this, it is not easy to blast with copper slag yourself, and it is recommended that you always have a professional do it for you. It makes blasting with copper slag not only a dangerous cleaning technique, but also a relatively expensive and time-consuming one


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