Steelmaking Slag - A Complex Material for the Production of Small-Size Materials Using Hyper-Press Technology

Abstract

The solution to the problem of large industrial cities with a developed metallurgical industry is the creation of environmentally friendly conditions for the life of the population through the disposal of industrial waste. The studies carried out have shown that the developed technology makes it possible to widely use steel-making slags and carbon dioxide emitted into the atmosphere in the production of small-piece wall stones with high operational properties. It is shown that only slag is required to obtain wall material without the use of a hydraulic binder.

Carbonized Steel-Smelting Slag Is a Promising Raw Material for the Production of Artificial Concrete

“…Many researchers tried to obtain a stone as a result of the action of carbon dioxide on molded products from slag in a reactor [3,4], but the carbonization processes affected the surface zone and did not extend to the entire depth of the sample. The core remained not carbonized, and as a result of holding both in the normal hardening chamber and in the reactor, cracks formed on the surface of the samples, leading to self-destruction due to the transition of the β-с2s phase to γ-с2s, which does not possess binding properties at high pH values ≥ 12, and free CaO and MgO increase in volume [5,6].…”