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특허 상세정보

Method and apparatus for production of precipitated calcium carbonate and silicate compounds in common process equipment

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C01B-033/24    C01B-033/00    C01F-011/18    C01F-011/00   
미국특허분류(USC) 423/331; 423/430; 423/432
출원번호 US-0797173 (2001-02-28)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 17  인용 특허 : 123
초록

A method and apparatus for the production of calcium carbonate and calcium silicate in common superatmospheric reactors. Multiple reactors can be provided for switching production between reactors, and advantageously utilizing process waste heat. On site production of both PCC and Calcium Silicate Hydrates is thus achieved in a paper mill.

대표
청구항

What is claimed is: 1. A method for the hydrothermal production of calcium silicate hydrate and calcium carbonate in a set of common reactors, said method comprising: (a) providing an aqueous lime slurry, said aqueous lime slurry comprising (i) Ca(OH)2 solids and (ii) dissolved Ca(OH) 2 in the form of Ca++ ions; (b) screening grit from said aqueous lime slurry; (c) conditioning said aqueous lime slurry to a predetermined temperature; (d) feeding a first portion of said aqueous lime slurry into a first reactor of said set of common reactors; (e) agit...

이 특허에 인용된 특허 (123)

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  1. Husband, John Claude; Svending, Per; Skuse, David Robert. Compositions. USP20190410253457.
  2. Mathur, Vijay K. Fibrous structured amorphous silica including precipitated calcium carbonate and compositions of matter made therewith. USP20180910077363.
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