High-temperature soft-melted steel slag precise control high-efficiency cleaning crushing treatment device and method

Abstract

The invention relates to a high-temperature soft-melted steel slag precise control high-efficiency cleaning crushing treatment device and method. The device comprises a movable tank type slag feeder (1), a bulk slag separation device (2), a bidirectional rotating high-temperature resistant crusher (3), a totally enclosed airtight cover (4), an automatic water pumping device (5), a high-temperatureresistant and wear-resistant hard crushing bed (7), a steel slag precision temperature measurement system, a smoke and dust cleaning treatment system and an intelligent monitoring operation system (17). Precise control, high-efficiency crushing and cleaning treatment of high-temperature soft-melted steel slag are achieved, after crushing, the particle size of over 90% of the steel slag is less than 300 mm, the dust concentration of outlet flue gas is 6-12 mg/Nm<3>, the device has the advantages of high steel slag powdering rate, high treatment efficiency, high degree of automation and high degree of cleanliness, the requirements of environmental protection policies are met, the economic benefits of steel slag treatment are greatly improved, and market prospects and technical advantages are good.

Description

technical field [0001] The invention relates to a device and method for precisely controlling and efficiently cleaning and crushing high-temperature soft-melting steel slag, in particular to a device and method for precisely controlling and efficiently cleaning and crushing high-temperature soft-melting steel slag produced in the production process of iron and steel enterprises. Background technique [0002] As a major steel producing country in the world, my country's crude steel output in 2019 is close to 1 billion tons. At the same time as each ton of steel is produced, about 150 kilograms of steel slag is produced in the form of by-products. However, the comprehensive resource utilization rate of steel slag in my country is still at a low level, which not only occupies a large amount of industrial land, but also causes great pressure on the atmosphere, soil, and water resources. In order to solve this situation, my country's environmental protection laws and regulations ...

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Problems solved by technology

The amount of water fetched, the way of fetching water, and the method of slag discharge in the existing steel slag roller crushing area are complex operations, which completely rely on the experience and judgment of the operators in the steel slag treatment workshop, and there is no unified standard, so that the indicators of steel slag in various application enterprises fluctuate greatly after crushing ; There is a large slag problem in the steel slag crushing process, the existing technology cannot achieve crushing, and large slag treatment is required manually, which affects the steel slag treatment efficiency; the roller crushing process is in a semi-closed crushing space, and the steel slag treatment process cannot be realized The effect of collecting all the smoke and dust in the middle

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