Dewatering promoter and method for production thereof
AssigneesSeihachiro Miura, Etsuko Miura, Patent Technology Development Inc.
InventorsSeihachiro Miura, Yoshihiro Niikura
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Abstract
A dewatering promoter which comprises a mixture of (A) a fine wood flour activated by a mechanochemical treatment and (B) a highly active cellulose fiber or a product formed by a grinding treatment of the mixture; and a method for producing the dewatering promoter which comprises adding the highly active cellulose fiber to the wood flour, in a ratio of more than 10% relative to the total mass of the wood flour and the highly active cellulose fiber, and subjecting the resultant mixture to a grinding treatment for at least 30 minutes. The above dewatering promoter can be produced at a low cost, and allows the reduction of the cost required for waste water treatments such as the disposal of a great amount of sludge.
Claims27
A dewatering aid consisting essentially of a blend of (A) a fine wood flour activated by a mechanochemical treatment and (B) high-activity cellulose fibers.
A dewatering aid consisting essentially of a grinding-treated material of a blend of (A′) a fine wood flour activated by a mechanochemical treatment and (B) high-activity cellulose fibers.
A method for the preparation of a dewatering aid consisting essentially of a blend of (A) a fine wood flour activated by a mechanochemical treatment and (B) high-activity cellulose fibers,
- said method comprising admixing a wood flour with high-activity cellulose fibers and subjecting the mixture to a grinding treatment for at least 30 minutes,
- wherein the proportion of the high-activity cellulose fibers is not lower than 10% based on the total mass of the wood flour and the high-activity cellulose fibers.
A method for the preparation of a dewatering aid consisting essentially of a grinding-treated material of a blend of (A′) a fine wood flour activated by a mechanochemical treatment and (B) high-activity cellulose fibers,
- said method comprising admixing a wood flour with high-activity cellulose fibers and subjecting the mixture to a grinding treatment for at least 30 minutes,
- wherein the proportion of the high-activity cellulose fibers is not lower than 10% based on the total mass of the wood flour and the high-activity cellulose fibers.
Dependencies are inferred from the claim text.