What is slag ?
Slag is a partially vitreous by-product of smelting ore to separate the metal fraction from the unwanted fraction. It can usually be considered to be a mixture of metal oxides and silicon dioxide.
However, slags can contain metal sulfides (see also matte) and metal atoms in the elemental form. While slags are generally used as a waste removal mechanism in metal smelting, they can also serve other purposes, such as assisting in the temperature control of the smelting; and also minimizing any re-oxidation of the final liquid metal product before the molten metal is removed from the furnace and used to make solid metal.
Slag Crushing Applications
The South Dakota DOT research project investigated the effects of concentrated brines of magnesium chloride, calcium chloride, sodium chloride, and calcium magnesium acetate on portland cement concrete. Their study showed that chemical attack of the hardened cement paste is significantly reduced if supplementary cementitious materials are included in the concrete mixture. Both ground granulated blast furnace slag (slag cement) and fly ash were found to be effective at mitigating the chemical attack caused by the deicers tested. In the tests performed, slag cement performed better as a mitigation strategy as compared to coal fly ash.
Steel slag is an industrial byproduct obtained from the steel manufacturing industry.
The Slag Crushing
The slag is produced during the smelting process in several ways. Firstly, slag represents undesired impurities in the metals being smelted, which float to the top during the smelting process. Secondly, metals start to oxidize as they are smelted, and slag forms a protective crust of oxides on the top of the metal being smelted, protecting the liquid metal underneath. When the metal is smelted to satisfaction, the slag is skimmed from the top and disposed of in a slag heap to age. Aging slag is an important part of the process, as it needs to be exposed to the weather and allowed to break down slightly before it can be used.
Slag cement, or ground granulated blast-furnace slag, has been used in concrete projects in the United States for over a century. Earlier usage of slag cement in Europe and elsewhere demonstrates that long-term concrete performance is enhanced in many ways. Based on these early experiences, modern designers have found that these improved durability characteristics help further reduce life-cycle costs, lower maintenance costs and makes concrete more sustainable. For more information on how slag cement is manufactured and it enhances the durablity and sustainability of concrete,
Slag crusher manufacturer - SBM
SBM is a famous manufacturer of Slag crusher in China, and supply all kinds of stone crusher, grinding mills and other mining machines. Now, our Slag crusher has been exported to some countries, such as USA, South Africa, Egypt, Mongolia, Germany, Russia etc. Of course, we not only supply Slag crusher, but also a series of installation ans maintenance service. We hope make a deep cooperation with our customer, mutually beneficial and win-win together.
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