KR830007113A - How to remove TiO_2 from filter element - Google Patents

How to remove TiO_2 from filter element Download PDF

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Publication number
KR830007113A
KR830007113A KR1019810003338A KR810003338A KR830007113A KR 830007113 A KR830007113 A KR 830007113A KR 1019810003338 A KR1019810003338 A KR 1019810003338A KR 810003338 A KR810003338 A KR 810003338A KR 830007113 A KR830007113 A KR 830007113A
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KR
South Korea
Prior art keywords
solution
titanium dioxide
calcium
concentration
sodium hydroxide
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Application number
KR1019810003338A
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Korean (ko)
Inventor
차이밍 챠오 크리스
Original Assignee
원본미기재
텍스트론 인코오포이션
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Application filed by 원본미기재, 텍스트론 인코오포이션 filed Critical 원본미기재
Priority to KR1019810003338A priority Critical patent/KR830007113A/en
Publication of KR830007113A publication Critical patent/KR830007113A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/28—Leaching or washing filter cakes in the filter handling the filter cake for purposes other than regenerating

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

내용 없음No content

Description

필터 요소로부터 TiO2의 제거법How to remove TiO2 from filter elements

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (11)

산화티탄을 수세될 수 있는 물질로 변화시키기 위한 충분량의 칼슘이온을 함유하는 알칼리수용액내에 기재(workpiece)를 침지시키는 단계와 그 다음 기재를 수세하는 단계로 되어 있는 것을 특징으로 하는 오염된 기재로부터 2산화티탄을 제거하는 방법.From the contaminated substrate, characterized by immersing the workpiece in an alkaline aqueous solution containing a sufficient amount of calcium ions to convert the titanium oxide into a washable substance. How to remove titanium oxide. 제1항에 있어서, 칼슘이온의 몰농도가 기재로부터 제거될 2산화티탄의 농도를 초과하는 것을 특징으로 하는 2산화티탄의 제거법.The method for removing titanium dioxide according to claim 1, wherein the molar concentration of calcium ions exceeds the concentration of titanium dioxide to be removed from the substrate. 제2항에 있어서 칼슘이온의 몰농도가 제거될 2산화티탄의 양을 적어도 인수 2에 의해 초과하는 것을 특징으로 하는 2산화티탄의 제거법.3. The method for removing titanium dioxide according to claim 2, wherein the molarity of calcium ions exceeds the amount of titanium dioxide to be removed by at least factor 2. 제1항에 있어서, 알칼리용액이 용액의 리터당 적어도 55그랙의 수산화나트륨의 농도로 된 용해되어 있는 수산화나트륨인 것을 특징으로 하는 2산화티탄의 제거법.The method of claim 1 wherein the alkaline solution is dissolved sodium hydroxide at a concentration of at least 55 craters of sodium hydroxide per liter of solution. 제1항에 있어서, 칼슘이온이 산화칼슘, 수산화칼슘, 탄산칼슘 및 염화칼슘으로 구성된 군에서 선택됨 염에서 도출되는 것을 특징으로 하는 2산화티탄의 제거법.2. The method of claim 1 wherein the calcium ion is derived from a salt selected from the group consisting of calcium oxide, calcium hydroxide, calcium carbonate and calcium chloride. 제1항에 있어서, 용액이 적어도 용액 리터당 0.5ml의 계면활성제를 포함하는 것을 특징으로 하는 2산화티탄의 제거법.The method of claim 1 wherein the solution comprises at least 0.5 ml of surfactant per liter of solution. 제1항에 있어서, 용액의 농도가 30℃의 10℃이내에 유지되는 것을 특징으로 하는 2산화티탄의 제거법.The method for removing titanium dioxide according to claim 1, wherein the concentration of the solution is maintained within 10 ° C of 30 ° C. 용1액의 온도는 사실상 30℃에 유지되는 한편, 적어도 용액 리터당 55그램의 수산화나트륨을 함유하며, 칼슘이 온의 몰 농도가 제거될 2산화티탄의 양을 적어도 인수 5에 의해 초과하도록 충분량의 산화칵슘을 함유하는 수산화나트륨소용액에 기재를 침지하는 것으로되어 있는 것을 특징으로 하는 오염기재로 부터 2산화티탄을 제거하는 방법.The temperature of the solution 1 is substantially maintained at 30 ° C. while containing at least 55 grams of sodium hydroxide per liter of solution and having a sufficient amount such that the molar concentration of calcium ions is removed by at least a factor of at least 5. A method for removing titanium dioxide from a contaminated substrate, characterized in that the substrate is immersed in a sodium hydroxide solution containing calcium oxide. 제8항에 있어서, 용액의 온도가 30℃의 10℃이내에 유지되는 것을 특징으로 하는 2산화티탄의 제거법.The method for removing titanium dioxide according to claim 8, wherein the temperature of the solution is maintained within 10 ° C of 30 ° C. 제8항에 있어서, 수산화나트륨의 농도가 리터당 55그램에서 리터당 557그램내에 드는것을 특징으로 하는 산화티탄의 제거법.9. The method of claim 8 wherein the concentration of sodium hydroxide is within 55 grams per liter to 557 grams per liter. 제10항에 있어서, 온도가 10℃로부터 거의 용액의 비점까지의 범위에 드는 것을 드는 것을 특징으로 하는 2산화티탄의 제거법.The method for removing titanium dioxide according to claim 10, wherein the temperature is in the range from 10 ° C to almost the boiling point of the solution. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019810003338A 1981-09-07 1981-09-07 How to remove TiO_2 from filter element KR830007113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019810003338A KR830007113A (en) 1981-09-07 1981-09-07 How to remove TiO_2 from filter element

Applications Claiming Priority (1)

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KR1019810003338A KR830007113A (en) 1981-09-07 1981-09-07 How to remove TiO_2 from filter element

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KR830007113A true KR830007113A (en) 1983-10-14

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KR1019810003338A KR830007113A (en) 1981-09-07 1981-09-07 How to remove TiO_2 from filter element

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