Coke-powder formed coke and preparation method thereof

Abstract

The invention discloses coke-powder formed coke and a preparation method thereof and belongs to the field of making of the formed coke. The coke-powder formed coke consists of the following substances in percentage by mass: 75 to 79 percent of coke powder, 10 to 14 percent of broken coke, 6 to 8 percent of calcium aluminate cement and 5 to 7 percent of waterborne epoxy resin. The formed coke is prepared by steam curing. The preparation method comprises the following steps of: (1) uniformly mixing the coke powder, the broken coke, the calcium aluminate cement and the waterborne epoxy resin according to a certain ratio, adding water to be uniformly mixed and carrying out compression moulding to form a semi-finished product; and (2) after standing the semi-finished product for 2 to 3 hours, feeding the semi-finishing product into a steam curing kettle, heating to the temperature of 90 to 100 DEG C, stopping heating after keeping for 8 to 10 hours and discharging the obtained product out of the kettle after stopping heating for 2 hours. The formed coke prepared by the preparation method has excellent cold-state and hot-state mechanical strengths and low breakage rate. In the smelting process, the formed coke is not defeated or dispersed, does not influence smooth operation of the furnace condition, does not influence the gas stream distribution and has good gas permeability when reacting in a furnace.

Description

technical field [0001] The invention relates to coke powder molded coke and a preparation method thereof, belonging to the field of molded coke manufacturing. Background technique [0002] At present, the world's energy is very tight, especially the rising price of coking coal, which leads to the high price of coke, which brings great cost pressure to metallurgical and foundry enterprises, and coke will produce a lot of broken coke and coke during transportation. Coke powder, because these crushed coke and coke powder cannot be directly used for smelting in normal metallurgical and casting production processes, they are simply burned as ordinary fuel, resulting in underutilization and increasing the energy consumption of the production process. Therefore, How to utilize this part of resources rationally and effectively has become the key to reducing the production cost of metallurgical and foundry enterprises. [0003] So far, the developed cokes are difficult to meet the c...

AI Technical Summary

Problems solved by technology

[0002] At present, the world's energy is very tight, especially the rising price of coking coal, which leads to the high price of coke, which brings great cost pressure to metallurgical and foundry enterprises, and coke will produce a lot of broken coke and coke during transportation. Coke powder, because these crushed coke and coke powder cannot be directly used for smelting in normal metallurgical and casting production processes, they are simply burned as ordinary fuel, resulting in underutilization and increasing the energy consumption of the production process. Therefore, How to use this part of resources reasonably and effectively becomes the key to reduce the production cost of metallurgical and foundry enterprises

[0003] So far, the developed cokes are difficult to meet the cold and hot mechanical strength at the same time, and the thermal stability, water resistance and other indicators are poor, and the ash content of the coke will be increased, resulting in secondary pollution. great limitations