Explosive slag treatment process method and device

Abstract

The invention provides a new metallurgy slag treatment and heat utilization method and device. According to the method, the phenomenon that slag often enters water to cause explosion in the blast furnace production process is used, the process principle of the phenomenon is combined with a steam method slag treatment technological principle, slag treatment and heat utilization are carried by usingthe explosion process caused by the fact that the slag enters the water, water vaporization and steam overheating processes are used for cooling the slag, high temperature slag and steam are directlyoutput, and heat utilization is carried out after the slag and the steam are output. By means of the method, the process of the phenomenon that the slag often enters the water to cause explosion on site is transferred into a closed slag treatment container, the single explosion process on site is changed into continuous inlet slag treatment explosion processes in the closed container, the continuous explosion slag treatment technological process is achieved, two job contents including slag pelletization and heat exchange in one system device are achieved, the beneficial effects of saving water, saving energy, achieving environmental protection, being simple in equipment, small in floor area and high in heat using efficiency, saving investment and the like are achieved, convenient conditions are created for follow-up heat utilization, and the actual application and popularization values are achieved.

Description

technical field [0001] The invention belongs to metallurgical slag granulation and slag treatment process, in particular to a metallurgical liquid slag granulation method and a waste heat utilization process and device. Background technique [0002] A large amount of metallurgical slag is produced in my country every year. The existing or tested slag treatment methods mainly include water quenching method, air quenching method, mechanical granulation plus air or water granulation method. Water quenching methods mainly include Lhasa method (RASA), INBA method, wheel method, Minte method, sedimentation tank, slag method, hot splash method, hot braising method, etc. These methods all use water quenching and water cooling. The process adopts water spraying or water injection to granulate and cool the slag, and all the heat of the slag enters the water. Due to the low enthalpy of water, the water consumption is relatively large. Generally, the ratio of slag to water is about 1:6-...

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Problems solved by technology

[0020] The present invention aims at the inadequacies of the existing metallurgical slag granulation process that cannot realize heat utilization, and the existing patent slag granulation process relies on additional power equipment for granulation, high energy consumption, complex equipment and other technological deficiencies, and proposes a new method Slag granulation method and device

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