Comprehensive treatment system and method of steel slag roller crushing-waste heat press self-dissolving and waste heat recovery
A technology of waste heat recovery and comprehensive treatment, which is applied in the fields of resource utilization, solid waste treatment, and high-efficiency treatment of steel slag. It can solve the problems of large compressed air consumption, environmental pollution, and water vapor explosion, and achieve high air-cooled crushing efficiency. , high degree of automation, small footprint
Active Publication Date: 2013-08-14
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +2
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Problems solved by technology
Hot pouring method has low efficiency in treating steel slag and pollutes the environment; hot stuffing method, water quenching method and wind quenching method adopt forced cooling with air or water, which has high efficiency, but hot stuffing method and water quenching method may occur due to the intervention of water. Water vapor explosion; although the wind quenching method uses air for forced cooling and crushing, the consumption of compressed air is large, and the heat energy cannot be recycled, and the noise is loud
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[0020] Such as figure 1 , 2 , 3 is a structural schematic diagram of a steel slag rolling crushing-waste heat self-decomposition under pressure and waste heat recovery comprehensive treatment system of the present invention, including a roll crushing treatment device 1, a waste heat recovery utilization device 2, a waste heat self-decomposition treatment device 3 and Slag filling 4; molten steel slag is initially cooled and crushed by the roller crushing treatment device 1 and becomes massive steel slag with a temperature of 400-800°C and a particle size of less than 200 mm; hot air formed after heat exchange between normal temperature air and molten steel slag ( 400°C or higher) enters the waste heat recovery and utilization device 2 for power generation or heating; the massive steel slag enters the waste heat self-decomposing device 3 under pressure for stabilization treatment.
[0021] The roller crushing treatment device 1 includes a roller crushing chamber 1-1, a roller ...
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Abstract
The invention relates to a comprehensive treatment system of steel slag roller crushing-waste heat press self-dissolving and waste heat recovery. The system comprises a roller crushing treatment device (1), a waste heat recycling device (2), a waste heat press self-dissolving treatment device (3) and a slag pot (4). The comprehensive treatment method in the system comprises the following steps: molten steel slag is poured in the roller crushing treatment device (1) from the slag pot (4); an air supply device (2-1) is used to inject normal temperature air in the roller crushing treatment device (1) to cool the molten steel slag; a roller crushing device (1-2) is used to crush large crusted steel slag bulks and turn the bottom molten steel slag over to the surface; air cooling and crushing are performed repeatedly until the molten steel slag is crushed to steel slag bulks; hot air enters the waste heat recycling device (2) after heat exchange for power generation or heating; and steel slag bulks are sent to the waste heat press self-dissolving treatment device (3) through a chute to perform stabilization treatment to steel slag.
Description
technical field [0001] The invention relates to a comprehensive treatment system and method for steel slag rolling crushing-waste heat self-decomposition under pressure and waste heat recovery and utilization, belonging to the field of solid waste treatment, in particular to the field of efficient treatment and resource utilization of steel slag. Background technique [0002] At present, there are many ways to treat steel slag, such as hot pouring method, hot stuffing method, water quenching method and wind quenching method. The hot-splashing method is to pour molten liquid steel slag into the hot-splashing field, cool it naturally by pumping water or air, and then carry out crushing and magnetic separation treatment; After the steel slag is pulverized, it is crushed and magnetically separated; the water quenching method is to cool the molten steel slag with high-pressure water and crush it into particles when pouring the molten liquid steel slag; the wind quenching method i...
Claims
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IPC IPC(8): C21B3/06B02C4/00F27D17/00
CPCY02P10/20Y02W30/50
Inventor 范永平钱雷王纯孙健董春柳
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP