[특허]Process for extracting and purifying naturally occurring zeolite

Process for extracting and purifying naturally occurring zeolite 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B03B-005/66
출원번호	US-0672065 (2000-09-27)
발명자 / 주소	Fellers, Billy D.
출원인 / 주소	Basic Resources, Inc.
대리인 / 주소	Ward, Robert J.
인용정보	피인용 횟수 : 3 인용 특허 : 99

초록 ▼

A process for extracting and purifying naturally occurring zeolite from ores in the presence of other mineral phases by using mechanical dispersion and differential suspension to remove a majority of the clay content of the ore. The process continues by removal of contaminants with a higher mass to surface area ratio than that of the desired zeolite product by employing the properties of demineralized water in combination with a countercurrent flow separation column. No chemical flocculating or flotation agents are employed in the process. The process separates the particulate compound by using the separation effect of an electrical double layer which forms when the mixture is hydrated in a low electrolyte medium.

대표청구항 ▼

1. A method for classification of a particulate mineral compound, said compound including particles possessing an electrical double layer when hydrated in low electrolyte medium and having a range of particle sizes, comprising: preparing an aqueous slurry of said particulate mineral compound, said aqueous slurry having a slurry density of 5% to 40%; introducing said slurry into a countercurrent classifying column, said classifying column having one or more stages, a feed injection port at about the midpoint of said classifying column, a demineralized water injection port below said feed injection port, a cap at such column's topmost edge, and an overflow port below said cap; injecting demineralized water into said countercurrent classifying column at said demineralized water injection port so as to form an ascending demineralized water stream sufficient to amplify differences in particle settling velocity; separating said particulate compound using the separation effect of said electrical double layer; and extracting an overflow stream through said overflow port. 2. The method of claim 1, wherein said particulate mineral compound is a zeolite compound comprising particles of a desired range of sizes from a lower portion of a secondary separation column. 3. The method of claim 1, wherein the particulate mineral compound is a zeolite compound. 4. The method of claim 1, wherein the aqueous slurry has a slurry density of 10% to 20%. 5. The method of claim 1, wherein the demineralized water has a low electrolyte content. 6. The method of claim 5 wherein the demineralized water has an electrolyte content of less than about 500 ppm. 7. The method of claim 6, wherein the demineralized water has an electrolyte content of less than about 50 ppm. 8. The method of claim 5, wherein the demineralized water has an electrolyte content of less than about 100 ppm. 9. The method of claim 8, wherein the demineralized water has

이 특허에 인용된 특허 (99)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Process for extracting and purifying naturally occurring zeolite 원문보기

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Process for extracting and purifying naturally occurring zeolite 원문보기

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