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Question:

What is the ratio of the coated sand to the graphite powder?

What is the ratio of the coated sand to the graphite powder?

Answer:

Or change the sand species, change the high refractoriness sand species, this cost is relatively large.
In addition to improve the refractoriness with graphite, can also add red. It also plays a role in increasing refractoriness and reducing gas output.
General additives accounted for 0.1-0.5 of the original sand weight. Different demand, of course, the proportion is not the same, there is no fixed number.

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