Blast-furnace slag processing system

Abstract

The invention belongs to the technical field of metallurgical iron-making devices, and specifically relates to a blast-furnace slag processing system. The blast-furnace slag processing system mainly comprises a bottom filter chamber group, a horizontal flow chamber and a circulating water chamber, wherein the bottom filter chamber group is arranged closely adjacent to a casting house in the long and narrow spare space at the casting house side and is positioned above the ground level, the horizontal flow chamber and the circulating water chamber connected in series are arranged behind the bottom filter chamber group, and the horizontal flow chamber and the circulating water chamber are positioned under the ground level. The invention is characterized in that the overall system is arrangedclosely adjacent to the casting house side, thereby avoiding the long distance conveyance of the slag-water slurry; and the bottom filter chamber is positioned above the ground level, thereby fully making use of the space in the horizontal plane and the vertical plane at the casting house side. The invention has the advantages of small occupied area, simple equipment and facility, low construction investment, low operating cost, convenient operation and maintenance and environmental friendliness, and achieves the effects of environmental protection, high efficiency and energy saving. The invention can be widely used in the blast-furnace slag processing system, and can also be used in other slag-flushing processing systems.

Description

technical field [0001] The invention belongs to the technical field of metallurgical ironmaking equipment, and in particular relates to a blast furnace slag processing system. Background technique [0002] At present, the treatment of blast furnace slag by ironmaking enterprises at home and abroad is generally divided into two categories: mechanical equipment method and conventional water flushing method (slag pool method). Mechanical equipment method includes INBA method, cage stirring method, wheel method and other systems; conventional flushing method (slag pool method) includes advection method and bottom filtration method and other systems. [0003] The mechanical equipment method has the advantages of mechanization and high degree of automation, but most of them are foreign patented technologies, and the patent fee and equipment introduction are expensive, and the investment cost and operation cost are high. [0004] The process flow of the advection method in the con...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: the advection tank occupies a large area, the layout of the general plan is difficult, the long-distance transportation of the slag-water mixture consumes a lot of energy, the finished product slag captured in the advection tank contains high free water, and dripping occurs during the process of transporting the slag. serious, environmental pollution

The disadvantage of this method is: the switch valve under the bottom filter group is soaked in slag water, the slag water is highly corrosive, and the valve is easily damaged. When filtering, slag grasping, and maintenance of the filter tank, a large amount of back-irrigation water will be generated due to lax valves, resulting in bottom filtration. It is difficult to overhaul and maintain the pool, and the bottom filter pool is located very deep below the floor surface, and the excavation volume of earthwork is large

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