Environmentally-friendly and energy-saving processing method of blast furnace slag and special processing equipment

Abstract

The invention relates to an environmentally-friendly and energy-saving processing method of blast furnace slag and special processing equipment, and belongs to the technical field of blast furnace orsubmerged arc furnace slag processing. The technical scheme is that a water slag advancing and conveying device (13) is arranged in a water and slag filter (14), a slag-water mixture outlet (8) of a swirling water-saving granulation tower (1) is connected with the water and slag filter (14), the water and slag filter (14) is connected with an inclined belt conveyor (20) through a discharging chute(19), and the equipment further comprises a sewage slurry pump (21) and a backwater and backwashing system. The equipment has the beneficial effects that according to the swirling water-saving granulation tower arranged at the front end of the water and slag filter, the amount of water entering the water and slag filter is reduced, and the filtering area of the water and slag filter is correspondingly reduced; no situation that a filter tank section has poor filtration performance occurs, and the service life of the water and slag filter is prolonged; the equipment cost is reduced due to theinclined belt conveyor, and the water is further filtered out of the water slag.

Description

technical field [0001] The invention relates to an environment-friendly and energy-saving blast furnace slag treatment method and special treatment equipment. After the slag produced in metal smelting processes such as blast furnaces or submerged arc furnaces is quenched and granulated by high-pressure water, the slag-water mixture is processed by special treatment equipment. The separation belongs to the technical field of blast furnace or submerged arc furnace slag treatment. Background technique [0002] At present, in the field of metal smelting, there are already many blast furnace or submerged arc furnace slag treatment technologies in use, including the invention patent I applied for, the patent application number is 2019107935864, and the name is "a kind of slag in the process of blast furnace or submerged arc furnace smelting Although it solves some problems in the process of slag treatment in the blast furnace or submerged arc furnace smelting process, it still has...

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Problems solved by technology

[0002] At present, in the field of metal smelting, there are already many blast furnace or submerged arc furnace slag treatment technologies in use, including the invention patent I applied for, the patent application number is 2019107935864, and the name is "a kind of slag in the process of blast furnace or submerged arc furnace smelting Although it solves some problems in the process of slag treatment in the blast furnace or submerged arc furnace smelting process, it still has the following disadvantages: the water filter and the filter slag pool are of split structure and have a large area. The investment in water slag conveying equipment and civil construction is relatively high, and the temperature of hot water remaining after flushing slag is not easy to control, and it cannot meet the requirements for low-temperature power generation, etc.

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