DMZ reduces pollution with coke oven battery upgrade
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Ukraine's Dneprovskiy Steel Mill (DMZ, formerly Petrovka), part of DCH Group, completed the first stage of overhaul of coke oven battery No.4, the company says.
Total investment is about UAH 170 million ($6.3m), Kallanish notes. The project will reduce emissions of pollutants into the atmosphere.
As part of the investment project, 20 coking chambers were repaired at the DMZ coke-chemical site. It replaced the refractory masonry on the machine and coke sides, and moved the heating walls. They installed new armor, gas valves and reinforcement assemblies. Coke equipment was repaired and replaced.
Now the new refractory masonry has no cracks and the doors fit tightly to the armor. Repaired furnaces do not lose coke oven gas - all of it goes for cleaning and processing, the enterprise claims. Excess coke oven gas, which may be formed during the commissioning period, will be directed to the afterburner, the operation of which is fully consistent with the technological process.
The repair of the rest of the coking chambers will continue at the operating battery, and it is planned to complete it by the end of the year.
“In addition to overhaul of coke oven battery No. 4, this year ceramic surfacing is carried out at KB-1 and 2 with sealing of heating wall masonry joints,” says DMZ’s general director Vitaly Bash. “A project for the construction of a smokeless charge loading system by hydroinjection is under preparation. In general, this will increase the efficiency of the furnaces and significantly reduce the burden on the environment.”
DMZ produced 27,600 tonnes of crude steel in July, up by 27.1% on-year (see Kallanish passim). Pig iron output increased by 32.2% to 26,000t and production of rolled products was more by 20.4% to 20,800t.
In January-July, DMZ produced 171,600t of crude steel, 177,300t of pig iron and 138,200t of rolled products.
The main products are square billet supplied to Turkey and Egypt, channel bars with a wide export geography including Europe, Asia and Africa, and pig iron mainly exported to Turkey.
Svetoslav Abrossimov Bulgaria