Steel slag crushing, classifying and sorting continuous treatment device and method

Abstract

The invention relates to a steel slag crushing, classifying and sorting continuous treatment device and method. The steel slag crushing, classifying and sorting continuous treatment device comprises afeeding system (1), a hopper (2), a longitudinal high-speed rotation crushing system (3), an iron removing system (4), an air classifying and sorting system (5), a discharging system (6), a materialbin (7), a dust collecting system (8) and a control system (9). Steel slag falls into the high-speed rotation crushing system (3) from the hopper (2), through high-speed rotation and mutual collisionbetween steel rods in the high-speed rotation crushing system (3) and the steel slag, the crushing effect is achieved, the crushed steel slag falls into the sorting system (5), and due to gravity difference, steel slag of different grain size grades are sorted out and enter the material bin (7) from respective material outlets. The whole process is collaboratively and continuously conducted, and the steel slag treatment efficiency is improved.

Description

technical field [0001] The invention relates to a continuous processing device and method for crushing, classifying and sorting steel slag, in particular to a continuous processing device and method for crushing and classifying and sorting steel slag produced in the production process of iron and steel enterprises. Background technique [0002] my country is a big country in steel production, and its annual steel output accounts for more than 50% of the global output. About 0.12-0.14 tons of steel slag is produced for every ton of steel produced, and the annual production of steel slag is about 100 million tons. Steel slag contains a certain amount of metallic iron and iron oxides, and contains hydraulic gelling minerals such as dicalcium silicate and tricalcium silicate. It can be regarded as inorganic material resources and has important resource recovery value. Moreover, various resources have been increasingly scarce in my country for a long time, so steel slag treatmen...

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Problems solved by technology

[0006] The main equipment for steel slag crushing is a rod mill, but the particle size of the steel slag entering the equipment is not limited. The slag is coarsely broken in the equipment and then enters the grinding equipment. Among them, large particle slag blocks occupy a certain proportion. The residence time in the grinding equipment is long, the grinding is difficult, and the energy consumption of grinding is high. Moreover, the current production line of steel slag crushing-screening-magnetic separation-grinding processing is complicated, occupies a large area, and requires high investment, which limits the efficiency and energy saving of steel slag. The continuous production operation of steel slag crushing and sorting cannot be realized

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