CN1048647C - Method for prepn. of filter aid using asbestos tailing - Google Patents
Method for prepn. of filter aid using asbestos tailing Download PDFInfo
- Publication number
- CN1048647C CN1048647C CN94101963A CN94101963A CN1048647C CN 1048647 C CN1048647 C CN 1048647C CN 94101963 A CN94101963 A CN 94101963A CN 94101963 A CN94101963 A CN 94101963A CN 1048647 C CN1048647 C CN 1048647C
- Authority
- CN
- China
- Prior art keywords
- filter
- filter aid
- filter residue
- asbestos tailings
- antigorite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a method for preparing a filter aid using asbestos tailings, which is characterized in that antigortie in asbestos tailings is crushed to 60 to 100 meshes, and then the antigortie is dissolved by using sulfuric acid, the concentration of which is 25 to 30%, to filter for obtaining filter residues. After magnetically separated, the filter residues are cleaned by using dilute nitric acid to remove heavy metal elements. Then, the filter residues are poached to remove flaky mineral substances and are dried and sterilized to obtain the desired filter aid. The filter aid can effectively filter impurity particles which are less than 20 angstroms, and can be used for industries, such as petroleum refining, wine brewing, foods, medicines, etc.
Description
The present invention relates to the production method of filter aid, particularly produce the method for filter aid with the antigorite in the asbestos tailings.
Filter aid commonly used at present has diatomite, attapulgite, bentonite (containing atlapulgite), perlite etc., and is wherein best with the effect of atlapulgite again.But the generation of atlapulgite needs a deep-processing process, so cost is higher.Along with the progress of science and technology development and society, to have higher requirement for the quality of oils, drinks and pharmaceutical product, the content that reduces minute impurities is exactly a main quality index.Even but use above-mentioned atlapulgite also some can't be removed less than the impurity molecule of 20 dusts, therefore seek a kind of removal of impurities, decolouring, the better new material of adsorption effect have become material science as filter aid a new problem.
China's alteration ultrabasic rock body spreads all over, and wherein the ultrabasic rock of shallow alteration has the great amount of soluble element to run off in the alteration process in the asbestos conduct, has formed loose, cavernous structure, and this just provides possibility for the preparation filter aid.
Purpose of the present invention is a kind ofly produced the method for efficient filter aid with the antigorite in the asbestos tailings with regard to providing, the filter aid of producing with this method effectively filtering less than the contaminant particles of 20 dusts.
The solution that realizes the object of the invention is: the antigorite with in the asbestos tailings that is provided is produced the method for filter aid and is carried out according to the following steps:
(1) antigorite in the asbestos tailings is crushed to the 60-100 order,
(2) above-mentioned breeze is dissolved in the sulfuric acid that concentration is 25-30%, gets filter residue after the filtration,
(3) above-mentioned filter residue is carried out magnetic separation, removes ferromagnetic mineral,
(4) with the filter residue after the magnetic separation with clear Xian of rare nitric acid, make the heavy metal element dissolving, use water rinse again, the sheet mineral are removed,
(5) with filter residue oven dry, the sterilization of rinsing, promptly get required filter aid.
Antigorite in the asbestos tailings is a layer structure, with the contact of-OH-base, has good connectedness between the two-layer Si-Mg octahedron.In order to increase hole, must a part of Mg of dissolving
2+, but keep a part of Mg simultaneously again
2+, in order to avoid destroy the octahedra support of Si-Mg.Therefore, the concentration of sulfuric acid should be controlled between the 25-30%.Excessive concentration can make Mg
2+Too much or fully leach, cause the Si-Mg support to subside, hole has not just existed naturally yet; And concentration is low excessively, and Mg, Fe ion can't leach, and hole stops up, and its electrical property difference is little simultaneously, can't adsorb some charged corpuscle.In addition, the grinding particle size of antigorite should be between the 30-100 order.Particle too carefully can destroy its layer structure, reduces the hole number of unit volume.Rinsing in above-mentioned (4) is in order to remove sheet mineral or other fine particle thing such as mica, in order to avoid stop up formed hole.
Example
Sample ore is Lueyang, Shaanxi Province asbestos tailings (antigorite), and it is mainly composed as follows: SiO
238.4%, MgO 40.2%, Fe
2O
a5.92%, FeO 1.28%, and NiO 0.17%, loss on ignition 11.2%.
Sample ore is crushed to 80 orders, with the molten ore deposit of 25% sulfuric acid, filter filter residue.Filter residue rare nitric acid with 10% after magnetic separation cleans, and with the dissolving of heavy metal elements such as Cr, Hg, uses the water rinse several times again.With the filter residue oven dry of rinsing, promptly get filter aid at last.After measured: the pore radius of this filter aid is less than 20 dusts, and internal surface area reaches 200 meters
2/ gram, specific area is 320 meters
2/ gram, decolorizing ability is 150, and activity degree is 250, and filtering degree is the 45ML/ branch, and oil shortage ratio is 10%.
The invention has the advantages that technology, equipment are simple, cost is low, the filter aid of producing Energy is good, and provides new approach for fully utilizing asbestos tailings. The prepared drainage of this method Agent can be used for the industry such as petroleum refining, wine brewing, food, medicine.
Claims (1)
1, a kind ofly produce the method for filter aid, it is characterized in that carrying out according to the following steps with the antigorite in the asbestos tailings:
(1) antigorite in the asbestos tailings is crushed to the 60-100 order,
(2) above-mentioned breeze is dissolved in the sulfuric acid that concentration is 25-30%, gets filter residue after the filtration,
(3) above-mentioned filter residue is carried out magnetic separation, removes ferromagnetic mineral,
(4) with the filter residue after the magnetic separation with clear Xian of rare nitric acid, make the heavy metal element dissolving, use water rinse again, the sheet mineral are removed,
(5) with filter residue oven dry, the sterilization of rinsing, promptly get required filter aid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101963A CN1048647C (en) | 1994-02-25 | 1994-02-25 | Method for prepn. of filter aid using asbestos tailing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101963A CN1048647C (en) | 1994-02-25 | 1994-02-25 | Method for prepn. of filter aid using asbestos tailing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1091676A CN1091676A (en) | 1994-09-07 |
| CN1048647C true CN1048647C (en) | 2000-01-26 |
Family
ID=5030446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94101963A Expired - Fee Related CN1048647C (en) | 1994-02-25 | 1994-02-25 | Method for prepn. of filter aid using asbestos tailing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048647C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4148199B2 (en) | 2004-07-30 | 2008-09-10 | 松下電工株式会社 | Electric razor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041740A (en) * | 1988-10-08 | 1990-05-02 | 张天中 | With the serpentine is the method for raw material production magnesiumcarbonate and/or magnesium oxide and porous silica |
| CN1044233A (en) * | 1988-09-30 | 1990-08-01 | 广西化工研究所 | The method for preparing filter aid with diatomite |
| CN1050411A (en) * | 1989-09-20 | 1991-04-03 | 中国人民解放军信阳陆军学院训练部科研处 | The comprehensive utilization of serpentine tailing |
| CN1075936A (en) * | 1992-02-24 | 1993-09-08 | 西安地质学院科技开发公司 | Method for extracting magnesium oxide from serpentine |
-
1994
- 1994-02-25 CN CN94101963A patent/CN1048647C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044233A (en) * | 1988-09-30 | 1990-08-01 | 广西化工研究所 | The method for preparing filter aid with diatomite |
| CN1041740A (en) * | 1988-10-08 | 1990-05-02 | 张天中 | With the serpentine is the method for raw material production magnesiumcarbonate and/or magnesium oxide and porous silica |
| CN1050411A (en) * | 1989-09-20 | 1991-04-03 | 中国人民解放军信阳陆军学院训练部科研处 | The comprehensive utilization of serpentine tailing |
| CN1075936A (en) * | 1992-02-24 | 1993-09-08 | 西安地质学院科技开发公司 | Method for extracting magnesium oxide from serpentine |
Non-Patent Citations (1)
| Title |
|---|
| 硅酸盐词典第一版 1984.6.1 中国建筑工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091676A (en) | 1994-09-07 |
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| C14 | Grant of patent or utility model | ||
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