Steel slag treatment process for preparing cement blending agent by using waste steel slag

Abstract

A steel slag treatment process for preparing a cement blending agent by using waste steel slag is characterized in that firstly a vibrating screen is used to screen the steel slag in three levels according to the size, the large-sized steel slag is recovered back to a furnace to be extracted again, the middle-sized steel slag is broken, the broken steel slag and small-sized steel slag are mixed and fully broken and porphyrized, the porphyrized steel slag is subjected to mixed improvement by using an improver, lime or gypsum is added into the improved mixture and is mixed, and the high-hardness cement blending agent can be obtained after dehydration. When the steel slag treatment process is used to prepare a cement clinker, the physical and chemical property of cement can be effectively improved, the steel slag can be quickly treated, the waste is turned into wealth, iron and steel materials are recycled maximally, and zero emission is realized.

Description

technical field [0001] The invention relates to a steel slag treatment method, in particular to a steel slag treatment process capable of maximally recycling steel materials and realizing zero discharge. Background technique [0002] With the development of the iron and steel industry, the amount of steel slag produced by large metallurgical enterprises in steelmaking and ironmaking has also increased. The main components in these steel slags are mainly metal oxides, calcifications and related silicates derived from them. Generally speaking, due to the nature of these steel slags, there is no particularly effective method that can be directly disposed of, and the usual processing methods for these steel slags produced are to use loading vehicles, electric shovels and other equipment to excavate and load them, and then send them to the disposal site. Slag landfill, such slag landfill occupies a large amount of land, and the recyclable substances in steel slag cannot be fully...

AI Technical Summary

Problems solved by technology

Generally speaking, due to the nature of these steel slags, there is no particularly effective method that can be directly disposed of, and the usual processing methods for these steel slags produced are to use loading vehicles, electric shovels and other equipment to excavate and load them, and then send them to the disposal site. Slag landfill, this kind of slag landfill occupies a large amount of land, and the recyclable substances in steel slag cannot be fully utilized, which wastes resources and easily causes irreversible damage to the environment