High-temperature slag dry method cooling and pelleting waste heat recycling system and method

Abstract

The invention relates to a high-temperature slag dry method cooling and pelleting waste heat recycling system and method and aims at solving the technical problems that according to an existing high-temperature slag dry method cooling and pelleting waste heat recycling system and method, the requirement for viscosity of high-temperature slag is high, high-temperature equipment losses are large, and durability of equipment is poor. According to the technical scheme, firstly, cold slag particles are laid on a trolley annularly moving, high-temperature slag flows to the upper surface of a cold slag layer through a fixed slag bucket, the cold slag layer moves along with the trolley, and a film layer is automatically formed on the cold slag layer through the high-temperature slag; a water cooling pipe and a slag ploughing device are arranged above the high-temperature slag layer, and radiation heat exchange and slag breaking are facilitated; cold air penetrates the cold slag layer to exchange heat with the high-temperature slag layer, and high-temperature slag cooling and solidifying are achieved; the solidified slag and high-temperature slag running along with the trolley are automatically shoveled into a heat exchanger through a slag shoveling device fixed above the trolley, secondary heat exchange is conducted in the heat exchanger, cooling and pelleting of high-temperature slag are achieved, and later deep processing of the cooled and pelleted slag is convenient.

Description

technical field [0001] The invention relates to the field of high temperature slag cooling granulation and waste heat recovery processing, in particular to a high temperature slag dry cooling granulation waste heat recovery system and method. Background technique [0002] High-temperature slag is a by-product in the process of high-temperature smelting and thermal power generation, such as high-temperature converter steel slag and blast furnace slag at a temperature of about 1500-1600 °C produced in iron and steel smelting. A common feature of these high-temperature slags is that they contain a large amount of heat energy and inorganic minerals, which can be used as high-quality energy and resource recovery. In addition, the output of these high-temperature slags is huge, which is directly related to the energy saving and emission reduction of industrial enterprises and the efficient utilization of solid waste resources. Normally, 1 ton of steel can produce 100-150kg of hig...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the technical problems existing in the existing high-temperature slag processing system and method, which have higher requirements on the viscosity of high-temperature slag, greater loss of high-temperature equipment, and poor durability of equipment, and provide a dry cooling granulation method for high-temperature slag Waste heat recovery system and method

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