Half-wet method slag processing system and method

Abstract

The invention discloses half-wet method slag processing system and method, wherein the half-wet method slag processing system comprises a slag storage bin, a high-pressure atomizing nozzle and a crushing device with high-speed revolution, wherein the upper part of the slag storage bin is provided with a high-temperature liquid slag inlet which is connected with a slag outlet of a blast furnace; the high-pressure atomizing nozzle and the crushing device are arranged in the slag storage bin and positioned below the high-temperature liquid slag inlet; the high-pressure atomizing nozzle sprays high-pressure aerial fog towards the crushing device to impact and cool the liquid slag of the blast furnace; and the crushing device is used to further mechanically crush and cool the slag and process the slag into materials for preparing cement. The invention overcomes the defects of the high use level and the waste of water resources, difficult heat energy recovery and the high cost of the reprocessing of slag secondary products in the traditional slag processing method.

Description

technical field [0001] The invention relates to the field of iron and steel metallurgical process slag treatment; in particular, it refers to a semi-wet slag treatment system and treatment method. Background technique [0002] Iron and steel metallurgical process - blast furnace ironmaking, converter steelmaking and other processes produce a large amount of smelting slag at a rate of 30-40% of the steel output every year, with an annual output of hundreds of millions of tons globally, and the heat energy taken away by it is equivalent to standard There are more than 20 million tons of coal, which is equivalent to 15 billion yuan. If this part of slag cannot be effectively consumed, it will become a public nuisance to the society. Turning waste into treasure as a by-product can increase the added value of slag. [0003] To this end, the predecessors have done a lot of work, among which the most used water method is to quench the slag through water to make raw materials for ce...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a semi-wet slag treatment system and treatment method, which can overcome the defects of traditional slag treatment methods, such as large water consumption, waste, difficulty in heat energy recovery, and high cost of reprocessing slag by-products, and reduce equipment failures Rate

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