An online maintenance process for blast furnace slag treatment and granulation equipment
A technology for granulating equipment and blast furnace slag, which is applied in the field of maintenance technology, can solve problems such as damage to economic benefits, the impact of efficient slag treatment operations, and the adverse impact of fire slag on the environment, so as to ensure smooth progress, good promotion and application value, and practical value. high effect
Active Publication Date: 2017-03-22
WUYANG IRON & STEEL
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Problems solved by technology
Since the blast furnace is a continuous production equipment, the interior of the granulation equipment and related equipment are affected by the erosion of water slag, and regular shutdowns are required for maintenance. The discharge of slag not only has adverse effects on the environment, but also damages economic benefits. Therefore, granulation Periodic inspection and maintenance of equipment is subject to certain restrictions, which has a certain impact on the efficient operation of slag treatment
Method used
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[0022] figure 1 Show, the concrete steps of the present invention are example with isolation 1# granulation system:
[0023] Before the overhaul, prefabricate and weld top-opening flanges on the 1# high-pressure water inlet branch pipe 3 and the 1# high-pressure water inlet branch pipe transition section 4, as well as the slag water discharge pipe 5 and the pipe transition section 6, where three blind plates are to be added. device;
[0024] a. Utilize the flushing water slag clearance, all slurry pumps for slag treatment stop running;
[0025] b. Turn off the main power supply and control power supply of the slurry pump and granulation equipment;
[0026] c. Loosen and remove the three inlet and outlet pipe flange bolts of the 1# granulation tower 2 mentioned in the above step a;
[0027] d. Use the jack 3 to cooperate with the flange opening device, and open the flanges on both sides of the flange to both sides by about 10mm;
[0028] e. Take out the old gasket and clean...
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An online maintenance process for blast furnace slag processing granulation equipment belong to the technical field of maintenance process for blast furnace slag processing equipment and is applied to online overhaul of slag processing granulation equipment. A technical scheme is as below: in the gap of blast furnace tapping, blinding plates are arranged on the inlet and outlet pipes of slag processing single field granulation equipment for isolation, which was isolated, while the other field can continue punching grain lag; after the failure is eliminated, the equipment can return to work. The process not only avoids fire slag discharge and environmental pollution, but also ensures the maximization of economic benefits of blast furnace, so as to provide guarantee for the environment protection and economical operation of the blast furnace. The pipeline blind plates used in the present invention are made of thin steel plates, and has the advantages of easy material drawing, streamlined process and high practical value, so as to ensure the smooth progress of the entire production process of the blast furnace. The process is the first in the industry, can conduct online overhaul and maintenance of punching box, water control electrically operated valve, grating, granulated panel, bottom wear layer, slag flushing pipelines and underflow pipe of granulation equipment, and creates a novel model for maintenance of slag processing equipment, and has excellent application value.
Description
technical field [0001] The invention relates to a maintenance process for realizing online maintenance of blast furnace slag treatment and granulation equipment, and belongs to the technical field of blast furnace slag treatment equipment maintenance technology. Background technique [0002] Granulation equipment is the core equipment for blast furnace slag treatment. Blast furnace slag is granulated and quenched by high-pressure water to become water slag. It is an important facility to realize the recycling of emissions and maximize economic benefits. Since the blast furnace is a continuous production equipment, the interior of the granulation equipment and related equipment are affected by the erosion of water slag, and regular shutdowns are required for maintenance. The discharge of slag not only has adverse effects on the environment, but also damages economic benefits. Therefore, granulation Periodic inspection and maintenance of equipment is subject to certain restric...
Claims
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IPC IPC(8): C21B3/06
CPCY02W30/50
Inventor 王力徐贵强刘新尚孟建桥马增美
Owner WUYANG IRON & STEEL