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Can the vertical roller mill be used for nickel slag recycling?
Nickel slag is the industrial waste produced by laterite nickel ore in the process of smelting ferronickel alloy or refining nickel metal. It is also called stainless steel slag or nickel-iron slag.
How to recycle nickel slag?
Studies have shown that nickel slag has pozzolanic activity. After nickel slag is finely ground to a fine powder, it can be added to cement clinker as a cement admixture. Using nickel slag to prepare cement admixture, the addition amount can reach 30%. After many studies and experiments, the results show that nickel slag, like steel slag, slag, and other industrial waste slags, can produce clinker cement, and nickel slag has very good activity, which is better than steel slag.
Can the vertical roller mill be used for nickel slag recycling?
The poor grindability of nickel slag is the main reason for its low utilization rate. The silicate, aluminate, and other minerals contained in the nickel slag make it have potential gelling activity. However, due to the dense structure of the nickel slag, high mineral crystallinity, and a certain amount of iron minerals, it has poor grindability. It severely restricts the comprehensive utilization of nickel slag.
Aiming at the problem of poor grindability of nickel slag, Xinxiang Great Wall Machinery has launched nickel slag vertical mills, which not only adapt to high hardness materials, but also greatly improve grinding efficiency, and reduce grinding power consumption, grinding noise, and civil engineering investment. The specific surface area of nickel slag powder is more than 450 M2 / kg, which is suitable for cement and concrete admixture.
In other words, it is an important way to improve the activity of nickel slag and promote the wide application of nickel slag in the field of building materials by innovating and optimizing the grinding process and equipment of vertical mill.
