A smelting slag double -layer centrifugalized device with wind -quench function

Abstract

The invention discloses a double-layer centrifugal granulation device for smelting slag with the function of wind quenching, comprising an upper rotor cup, a lower rotor cup, an air guide chassis, an air duct sleeve, a rotating shaft, a motor and a fixed bracket, an upper rotor cup, The edge of the lower rotor cup is provided with a slope-type boss, and dense serrations are evenly distributed on the slope-type boss. Both the upper rotor cup and the lower rotor cup are fixed on the upper end of the shaft, and the upper rotor cup is provided with a number of through drainage holes. The air guide chassis is fixedly connected with the air duct sleeve, the rotating shaft is inserted inside the air duct sleeve, the upper end of the rotating shaft is sleeved with a first bearing, and a first bearing seat is arranged outside the first bearing, and the first bearing seat passes through several The spokes are connected to the air duct sleeve, and air vents are formed between several spokes, and the bottom of the air duct sleeve is provided with an air inlet, and an air supply channel is formed between the air vent and the air inlet; the invention can increase the processing capacity of smelting slag, increase The contact surface between air flow and slag optimizes the heat transfer efficiency between air flow and slag to ensure the quality of slag granulation.

Description

technical field [0001] The invention relates to the technical field of smelting slag granulation, in particular to a double-layer centrifugal granulation device for smelting slag with the function of wind quenching. Background technique [0002] With the increasing energy bottleneck problem in our country, the metallurgical industry, which is a large energy consumer, must achieve green and sustainable development, and develop, utilize and efficiently recover sensible heat resources of high-temperature slag, which will become one of the important energy-saving tasks of the metallurgical industry in the future. In order to reduce energy consumption and pollutant discharge as the goal, comprehensively implement energy-saving and emission-reduction upgrades, and increase the development and application of technologies such as efficient treatment of smelting slag and deep comprehensive utilization, waste heat recovery and resource utilization of smelting slag. [0003] The smelti...

AI Technical Summary

Problems solved by technology

However, if the particle size of the granulated slag is too large, the cooling rate of the molten slag particles will decrease during the heat exchange process with the heat transfer medium in the space, and the molten slag particles will easily transform into a crystal phase, resulting in a decrease in the glass transformation rate and affecting the particle size. Efficient resource utilization of slag particles; if the particle size of granulated slag particles is too small, its flying distance is relatively long, and it is easy to hit the wall of the granulation chamber in a molten state or a state of external condensation and internal melting to stick to it, and Easily sticks into large pieces

If the high-temperature slag particles are all bonded to the wall surface and bonded into large pieces, on the one hand, it is easy to cause overheating and corrosion on the wall surface of the granulation bin, and the large pieces bonded after cooling are not easy to clean, which brings great difficulties to the maintenance work. Large workload; on the other hand, the slag particles that are bonded into large pieces are slowly cooled in the granulation chamber space, and have sufficient time to crystallize, thereby reducing their glass conversion rate and affecting their efficient resource utilization

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