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Method of detoxifying asbestos by using room-temperature recrystallization scheme
US9283417B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9283417-B2 |
| Application number | US-201414555266-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 26, 2014 |
| Priority date | Nov 27, 2013 |
| Publication date | Mar 15, 2016 |
| Grant date | Mar 15, 2016 |
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- Title
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Abstract
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Disclosed is a method of detoxifying asbestos by using a room-temperature recrystallization scheme. The method includes heat-treating a rock or slate containing asbestos; and putting the heat-treated rock or slate in an aqueous solution, to which organic acid is added, to allow the heat-treated rock or slate to react with the aqueous solution having the organic acid.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of detoxifying asbestos by using a room-temperature recrystallization scheme, the method consists of: heat-treating a rock or slate containing asbestos; and putting the heat-treated rock or slate in an aqueous solution, to which organic acid is added, to allow the heat-treated rock or slate to react with the aqueous solution having the organic acid. 2. The method of claim 1 , wherein the rock containing asbestos includes serpentine. 3. The method of claim 1 , wherein the heat treatment is performed at a temperature in a range of 500° C. to 600° C. 4. The method of claim 1 , wherein the heat treatment is performed for 5 hours to 15 hours. 5. The method of claim 1 , wherein the organic acid is oxalic acid. 6. The method of claim 1 , wherein the reaction is performed at a room temperature and a normal pressure. 7. The method of claim 1 , wherein the reaction is performed for 6 hours to 12 hours. 8. A method of detoxifying asbestos by using a room-temperature recrystallization scheme, the method comprising: heat-treating a rock or slate containing asbestos; and putting the heat-treated rock or slate in aqueous solution, to which organic acid is added, to allow the heat-treated rock or slate to react with the aqueous solution having the organic acid, wherein the organic acid is added to the aqueous solution at a weight ratio of 0.0125 to 0.06 with respect to the rock or the slate containing asbestos. 9. The method of claim 8 , wherein the rock containing asbestos includes serpentine. 10. The method of claim 8 , wherein the heat treatment is performed at a temperature in a range of 500° C. to 600° C. 11. The method of claim 8 , wherein the heat treatment is performed for 5 hours to 15 hours. 12. The method of claim 8 , wherein the organic acid is oxalic acid. 13. The method of claim 8 , wherein the reaction is performed at a room temperature and a normal pressure. 14. The method of claim 8 , wherein the reaction is performed for 6 hours to 12 hours.
Assignees
Inventors
Classifications
Asbestos · CPC title
Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80) · CPC title
Shredding, crushing or cutting · CPC title
- A62D3/36Primary
Detoxification by using acid or alkaline reagents · CPC title
Inorganic fibres, e.g. asbestos · CPC title
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Frequently asked questions
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- What does patent US9283417B2 cover?
- Disclosed is a method of detoxifying asbestos by using a room-temperature recrystallization scheme. The method includes heat-treating a rock or slate containing asbestos; and putting the heat-treated rock or slate in an aqueous solution, to which organic acid is added, to allow the heat-treated rock or slate to react with the aqueous solution having the organic acid.
- Who is the assignee on this patent?
- Korea Inst Geoscience & Minera
- What technology area does this patent fall under?
- Primary CPC classification A62D3/36. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Mar 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).