Why Supersand Continous Sand Filter?
When asked why SSAB Oxelsund decided to install a Supersand Continous Sand Filter water filtration plant, Jan-Erik Bengtsson, Project Leader for the water treatment plant for the new mill, explained that: “We had two main motivations. First and foremost was our environmental policy: with the establishment of our new mill, we introduced the principle of 100% recycling. This means that our goal is to recycle all the cooling water used and all the slag produced by the cooling process. Consequently, following cooling we have to separate the slag from the water, clean the water for reuse and return the slag to the blast furnace, where it is an excellent raw material.” “Our second motivation was of a purely technical nature. The cooling water we use needs to be of a very high standard of purity. This is because during the last stage of the steel plate production process known as the Direct Cooling stage we use an advanced cooling system which requires very clean water: the equipment consisti
