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Table 1. Weighted-mean characteristics of coke supplied to blast furnace 9

Table 1 Weighted-mean characteristics of coke supplied to blast furnace 9

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Table 2. Weighted-mean characteristics of coke from batteries 1—4 and 6
Table 2. Weighted-mean characteristics of coke from batteries 1—4 and 6
Table 4 presents the characteristics of these concen- trates. duced, while the key factor in batch preparation for co absence of mechanica partial briquetting), pends on the ash and moisture content and the de king is the packing density of the batch. In the methods (such as ramming or the packing density mainly degree of crushing of the batch. These factors, in turn, affect the thermal conditions of coking, the physicom- ec. the yield and quality o hanical characteristi cs of the coke produced, and the coking products [9]. In Fig. 1, we plot the packing density of the coal batch supplied to coke batteries 1—4 as a function of its moisture content. The curve is parabolic, with a min- imum at a moisture content of 10.3%. However, the increase in packing density is not due to decrease in the moisture content of the batch but rather to increase in moisture content. In other words, the packing density increases as a result of increase in the mass of water in the coal batch. Table 3. Weighted-mean characteristics of coke supplied to the blast furnaces of shop 1 To investigate the influence of the granulometric composition, ash content, and moisture content of the coal batch on its packing density in the coal-prepara- tion shop for coke production at PAO ArcelorMittal Krivoy Rog, we select samples of coal concentrates for technical analysis and also for the determination of the packing density and granulometric composition. In physical terms, the influence of the moisture content on the packing density of the coal was ana- lyzed in [10]. In the wetting of coal, the water absorbed by its particles is uniformly distributed over their sur- faces, with increase in the distance between coal par- ticles by the thickness of the water film. That changes
Table 4 presents the characteristics of these concen- trates. duced, while the key factor in batch preparation for co absence of mechanica partial briquetting), pends on the ash and moisture content and the de king is the packing density of the batch. In the methods (such as ramming or the packing density mainly degree of crushing of the batch. These factors, in turn, affect the thermal conditions of coking, the physicom- ec. the yield and quality o hanical characteristi cs of the coke produced, and the coking products [9]. In Fig. 1, we plot the packing density of the coal batch supplied to coke batteries 1—4 as a function of its moisture content. The curve is parabolic, with a min- imum at a moisture content of 10.3%. However, the increase in packing density is not due to decrease in the moisture content of the batch but rather to increase in moisture content. In other words, the packing density increases as a result of increase in the mass of water in the coal batch. Table 3. Weighted-mean characteristics of coke supplied to the blast furnaces of shop 1 To investigate the influence of the granulometric composition, ash content, and moisture content of the coal batch on its packing density in the coal-prepara- tion shop for coke production at PAO ArcelorMittal Krivoy Rog, we select samples of coal concentrates for technical analysis and also for the determination of the packing density and granulometric composition. In physical terms, the influence of the moisture content on the packing density of the coal was ana- lyzed in [10]. In the wetting of coal, the water absorbed by its particles is uniformly distributed over their sur- faces, with increase in the distance between coal par- ticles by the thickness of the water film. That changes
Table 4. Characteristics of the coal concentrates used in the batch
Table 4. Characteristics of the coal concentrates used in the batch
Fig. 1. Influence of the moisture content on the packing density of coal batch (coke batteries 1—4).
Fig. 1. Influence of the moisture content on the packing density of coal batch (coke batteries 1—4).
Fig. 2. Influence of the moisture content on the packing density of coal batch (coke batteries 1—4), after recalcula- tion for dry mass.
Fig. 2. Influence of the moisture content on the packing density of coal batch (coke batteries 1—4), after recalcula- tion for dry mass.
Fig. 3. Influence of the moisture content on the packing density of coal batch in a drying chamber.
Fig. 3. Influence of the moisture content on the packing density of coal batch in a drying chamber.
Fig. 4. Dependence of the moisture content of the coal batch on the drying time.
Fig. 4. Dependence of the moisture content of the coal batch on the drying time.
Fig. 5. Influence of the content of the <3 mm class on the packing density of the coal batch supplied to coke batteries 1—4.
Fig. 5. Influence of the content of the <3 mm class on the packing density of the coal batch supplied to coke batteries 1—4.
Fig. 6. Influence of the content of the <0.5 mm class on the packing density of the coal batch.
Fig. 6. Influence of the content of the <0.5 mm class on the packing density of the coal batch.
Fig. 7. Influence of the ash content on the packing density of coal batch.
Fig. 7. Influence of the ash content on the packing density of coal batch.
Table 6. Pair-correlation coefficients
Table 6. Pair-correlation coefficients
Table 5. Characteristics of coal-batch samples
Table 5. Characteristics of coal-batch samples
Fig. 8. Dependence of the coke strength M5 on the pack- ing density of the coal batch.
Fig. 8. Dependence of the coke strength M5 on the pack- ing density of the coal batch.
Fig. 10. Silo in enclosed coal store: (/) silo wall; (2) elec- trodes (annular plates); (3) current sources; (4) perforated pipe; (5) vacuum pump; (6) conveyer belt; (7) dosing feeder; (8) output conveyer.
Fig. 10. Silo in enclosed coal store: (/) silo wall; (2) elec- trodes (annular plates); (3) current sources; (4) perforated pipe; (5) vacuum pump; (6) conveyer belt; (7) dosing feeder; (8) output conveyer.
Fig. 9. Dependence of the wear resistance Mjg on the packing density of the coal batch.
Fig. 9. Dependence of the wear resistance Mjg on the packing density of the coal batch.
Fig. 11. Variation in coal’s moisture content at pressures of 3.5 (A), 5 (@), and 7.5 (0) mm Hg.
Fig. 11. Variation in coal’s moisture content at pressures of 3.5 (A), 5 (@), and 7.5 (0) mm Hg.
Related topics:
Chemical EngineeringChemistryCoke ChemistryCoke Strength after Reaction
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