Method for handling waste material generated in a metallurgical process
OwnerLeena Lehtinen, Aimo Jarvineninventors
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Abstract
The invention relates to a method for improving the filterability and washing result of fine-grained waste material generated in the metallurgical industry. According to the method some of other fine-grained solid is added to the first waste precipitate before filtration, which is also removed from the process, and which remains stable in the same conditions as the first waste precipitate.
Claims13
A method to improve the filterability of the first fine-grained waste material generated in a metallurgical industry, characterized in that before filtration at least one other fine-grained waste material is added to the first waste material, which has a particle size that is either larger than the particle size of the first waste material, and/or that the particle shape clearly differs from that of the first waste material, and/or that its surface charge is of the opposite sign to the first waste material, and that the materials remain stable in the same kind of conditions.
Dependencies are inferred from the claim text.