The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 27, 1999

Filed:

Feb. 10, 1997
Applicant:
Inventors:

Yutaka Tamaura, Tokyo, JP;

Takashi Kiryu, Ota, JP;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252 60 ; 252 61 ; 106772 ; 106773 ; 210705 ; 210723 ;
Abstract

Shell fossil powder is added to a flocculation agent which is mainly composed of gypsum and silicate compound, and the mixture is added to a suspension. The mixing ratio of the flocculation agent and shell fossil powder is 3:1. The flocculation agent functions as a coagulation core A, and the shell fossil powder is able to absorb grains in the suspension as a carrier B and is acquired by the coagulation core A. The carrier B is a grain which is able to effectively utilize Ca.sup.2+ flocculation site of the coagulation core A, which absorbs a great deal of suspending grains, wherein the suspending grains are acquired by the coagulation core A and form a large flock and are quickly settled.


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