Method for preparing partially carbonized coal briquette, device for preparing partially carbonized coal briquette, and molten iron preparation device
A preparation device, a technology for coal briquetting, used in fluidized bed furnaces, sustainable manufacturing/processing, special forms of dry distillation, etc.
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preparation example Construction
[0067] Partially carbonized coal briquette preparation device 530 is a device for partially carbonized coal briquette. The description about the preparation device 530 of partially carbonized coal briquettes is repeated with the foregoing content, so it is omitted.
[0068] The melter-gasifier 540 receives compressed iron from the compressed iron preparation device 520 and receives partially carbonized coal briquettes from the partially carbonized coal briquette preparation device 530 , thereby preparing molten iron.
experiment example 1
[0070] A 1% viscosity regulator was added to the coal to adjust the fluidity of the coal to 1.2 logddpm and the total expansion to 35%, and coal briquettes were prepared from the blended coal.
[0071] The coal briquettes produced as above were partially carbonized in a carbonization furnace. The hot strength of partially carbonized coal briquettes was shown to be above 90%. The thermal strength represents the weight ratio of the particle size of 16 mm or more after rapidly heating 500 g of the sample coal briquette at 950° C. and rotating it for 30 minutes.
[0072] Moreover, even if there is contact between the coal briquettes in the carbonization furnace, there is no phenomenon of mutual bonding or adhesion. That is, the coal briquettes loaded from the upper part are smoothly lowered to the lower part and discharged.
experiment example 2
[0074] The test was performed in the same manner as in Experimental Example 1 except that the fluidity of the coal was adjusted to 1.90 logddpm and the total expansion to 60% by using a viscosity modifier of 0.5%.
[0075] The test results show that the thermal strength of the coal briquettes is above 90%, and there is no phenomenon of bonding or adhesion between the coal briquettes.
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