Discussion on the uses of gasifier slag?
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The treatment of gasification slag from numerous coal chemical projects is becoming an increasingly serious issue. I was wondering if anyone has any new ways of utilizing it
We have developed a coal-based solid waste treatment project that primarily involves using slag to make bricks, while also dealing with the solid waste generated by coal powder boilers.
The problem remains the surplus of slag over demand!
It should be possible to make bricks and cement, but it is indeed a difficult problem to solve at the moment
This post was last edited by shuker666 on 2019-7-8 at 15:57. This depends on the region: in the mainland, it can be used as a building material, for brick manufacturing, and as an additive in cement. The transportation distance is short, so the demand is relatively high, allowing for partial resource recycling； However, in the remote areas of Xinjiang and Inner Mongolia, as well as those far from large cities, such waste can only be disposed of as ordinary solid waste; whether through further processing or transportation elsewhere, the cost of transportation alone makes it uneconomical to do so ； For the glassy slag produced by certain gasification technologies (which does not allow penetration and does not cause secondary pollution), it can also be used as an additive in roadbed construction; this is all I know for now ；
Could the carbon content of the gasifier slag be considered for use in boiler combustion, to reuse its calorific value?
Currently, the carbon content in slag that has been gasified under pressure is within 5%, so it has little value for combustion.
The coarse slag can still be utilized; it certainly has a lower carbon content and can be used for brick manufacturing. The fine slag, on the other hand, has a high carbon content and high moisture content. The best approach at present is to dry it first and then use it in boilers for burning, with the residue resulting from this process being ground up to be used as building materials
Where is your project located?
13 is a limit; one wants to do everything below 13