CN1042521A - High wear-resistant activated carbon and preparation method thereof - Google Patents
High wear-resistant activated carbon and preparation method thereof Download PDFInfo
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- CN1042521A CN1042521A CN88107718A CN88107718A CN1042521A CN 1042521 A CN1042521 A CN 1042521A CN 88107718 A CN88107718 A CN 88107718A CN 88107718 A CN88107718 A CN 88107718A CN 1042521 A CN1042521 A CN 1042521A
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Abstract
The invention belongs to and be used to high wear-resistant activated carbon that reclaims gold and preparation method thereof.
The present invention adopts shell, fruit stone and the gac raw material thereof of circle or sub-circular, it also can be the sphere of artificial moulding, the gac that higher mechanical strength is arranged is a raw material, the preparation gac, the preparation method puts into activation furnace with raw material, feeds the mixed gas of rare gas element and water vapor, 200 ℃ and 500 ℃ of following charings, 700 ℃ of-1000 ℃ of activation, promptly obtain gac.
Description
The invention belongs to and be used to high wear-resistant activated carbon that reclaims gold and preparation method thereof.
At present adopt the gold mine of carbon slurry process all to use activated coco nut charcoal in the world, palm shell charcoal is that the golden performance of the highest suction of intensity is best in the various gacs, 6-16 order activated coco nut charcoal specific surface 1119m produced in USA
2/ g, benzene absorption 29.9%, iodine absorption 1111mg/g, 0.99mg/m
2, tetracol phenixin absorption 66.9%, methylene blue absorption 210mg/g intensity 80%.But China's Exocarpium cocois (Cocos nucifera L) shortage of resources the invention provides and a kind ofly inhales that golden performance can compare favourably with the coconut husk charcoal and abrasive wear resistance surpasses novel absorbent charcoal of coconut husk charcoal and preparation method thereof.
The purpose of this invention is to provide the gac and preparation method thereof of the no corner angle of a kind of circle or sub-circular, the raw material of this charcoal is easy to get, aboundresources.
The raw material of gac of the present invention is:
1, the shell of circle or sub-circular, fruit stone.
2, conform to other gac raw materials of 1 shape need.
3, the artificial sphere that is shaped, the gac that higher mechanical strength is arranged is a raw material.
Based on above-mentioned design, it is raw material that the present invention develops with Semen Crataegi and Fruit of Pashi Pear nuclear, without fragmentation, is prepared into the gac of oval no corner angle.Its preparation technology divides charing and active two steps to carry out.
In the various fruit stones such as Semen Crataegi and Fruit of Pashi Pear nuclear a kernel is arranged all, adopt general charing method, fruit stone becomes tarry matters and stops up the elementary hole that charing forms in carbonization process, and covering surfaces, and the elementary charcoal of gained is glossy slick surface.Because activator can't activate the gac that becomes to have big surface with contacting of charcoal when tarry matters had hindered activation.The present invention makes kernel become volatile gas by a small amount of water vapor when charing and drives out of, can be by the further elementary charcoal of activatory thereby obtain.Gac after elementary charcoal of gained and the activation is the natural shape of Semen Crataegi and Fruit of Pashi Pear nuclear, and crack-free and slight crack have very high physical strength.
Activation is an oxidation pore-creating process, and according to the present invention, activation can be used water vapor, and CO or air are activator, and when using steam activation, its reaction is:
C+H
2O→CO+H
2
The CO that generates, H
2With the water vapor of surplus be that water-gas can return as energy utilization.
The preparation of elementary charcoal is that feeding the moisture vapor volume ratio is 20-65% with the Semen Crataegi of the cleaning airing charring furnace of packing into, and flow velocity is 20-110cm
3/ minute.The rare gas element of gram charcoal and the mixed gas of water vapor at 200 and 500 ℃ of charing 2-4 hours, both can obtain elementary charcoal respectively.
Activating process is with the elementary charcoal activation furnace of packing into, and feeding the moisture vapor volume ratio is 4-100%, and flow velocity is 30-110cm
3/ minute.The rare gas element of gram charcoal and the mixed gas of water vapor, 700-1000 ℃ of activation, activation is subjected to the influence of activation temperature, time and three factors of activator add-on, and activation temperature of the present invention can both obtain satisfied activation effect between 700-1000 ℃, and the optimal activation temperature is 800-850 ℃.But Preparation of Activated Carbon of the present invention also single stage method is finished the i.e. directly intensification activation after obtaining elementary charcoal of whole process.Under same activation temperature and flooding velocity situation, the specific surface and the time of Semen Crataegi gac are directly proportional.Under same activation temperature, the specific surface of Semen Crataegi gac also is directly proportional with the add-on of water vapor.So can obtain the size of the desired activated carbon surface that obtains in the preparation process by control soak time or control water vapor add-on.
Depend on the surface-area size of the desired gac that obtains from the yield of Semen Crataegi and Fruit of Pashi Pear nuclear preparation gac, it is lower than the yield of the little surface activity carbon of preparation to prepare big surface activity carbon.Table 1 is the amount of the required Semen Crataegi of the Semen Crataegi gac of one ton of different specific surface of every production.
Table 1 is produced the amount that one ton of different specific surface gac needs mountain slag nuclear
Specific surface material quantity (T)
800 6.1
1000 7.1
1100 8.7
1200 10.9
1300 13.9
Specific surface, density and the pore texture result and the absorption property of the gac of the present invention's preparation, the measurement result of intensity are shown in table 2, table 3, and 6-16 order activated coco nut charcoal data produced in USA also are listed in the table for comparing.
Characteristics of the present invention are that the energy force rate U.S. coconut husk charcoal of absorption benzene is good, and intensity is also more than U.S.'s coconut husk charcoal height.
The effect of Semen Crataegi gac on extracting gold from by the present invention's preparation is that u.s. gold is carried out parallel comparison with the coconut husk charcoal with the Semen Crataegi charcoal, carry the gold amount, desorption effect and the abrasive wear resistance that in ore pulp, stirs, the result is that the suction gold performance of mountain slag nuclear charcoal is close with U.S.'s coconut husk charcoal, and in the ore pulp abrasive wear resistance of practical application than U.S.'s coconut husk charcoal height, thereby reduced the loss of charcoal, also reduced the gold loss that the powder charcoal causes, and improved the golden rate of recovery.
Gac by the present invention's preparation also is suitable for other absorption, decolouring, the application of aspects such as support of the catalyst.Both can be used for dynamic adsorption, also can be applicable to Static Adsorption,, in the application of dynamic adsorption, had its unique advantages because this class gac has very high abrasive wear resistance.
Embodiment provided by the invention is as follows:
Embodiment 1:
The Semen Crataegi of cleaning airing is packed in the charring furnace, and feeding the moisture vapor volume ratio is 61.7%, and flow velocity is 21.1cm
3/ minute.The nitrogen and the water vapor mixture body of gram charcoal, then continuously 200 and 500 ℃ of each charings 2 hours, temperature range adopts time variable control to heat up, and room temperature to 200 a ℃ heat-up rate is 2.8 °/minute, and 200-500 ℃ heat-up rate is 5 °/minute, then at N
2Be chilled to room temperature under the protection, the elementary charcoal after the gained charing is equipped with further activation and uses.
Embodiment 2:
Step is with embodiment 1, and feeding the moisture vapor volume ratio is 20.1%, and flow velocity is 62.3cm
3/ minute.The nitrogen and the water vapor mixture body of gram charcoal are continuously 200 and 500 ℃ of each charings 3 hours.
Embodiment 3:
Step is with embodiment 1, and feeding the moisture vapor volume ratio is 42.4%, and flow velocity is 104cm
3/ minute.The nitrogen and the water vapor mixture body of gram charcoal are continuously 200 and 500 ℃ of each charings 4 hours.
Embodiment 4:
Elementary charcoal is packed in the activation furnace, and feeding the moisture vapor volume ratio is 61.7%,, flow velocity is 39.7cm
3/ minute.The nitrogen and the water vapor mixture body of gram charcoal be raised to 800 ℃ at 6.4 °/minute heat-up rate from room temperature then, and constant temperature are in 800(± 5) ℃, activate 6 hours, obtaining specific surface area is 777m
2The gac of/g.
Embodiment 5:
Elementary charcoal is packed in the activation furnace, and feeding the moisture vapor volume ratio is 40.1%, and flow velocity is 83.4cm
3/ minute.The nitrogen and the water vapor mixture body of gram charcoal are raised to 850 ℃ and constant temperature at 800-850 ℃ at 6.4 °/minute heat-up rate from room temperature then, activate 5 hours, and obtaining specific surface is 1011m
2The gac of/g.
Embodiment 6:
Elementary charcoal is packed in the activation furnace, and feeding the moisture vapor volume ratio is 64.2%, and flow velocity is 106.0cm
3/ minute.The nitrogen and the water vapor mixture body of gram charcoal are raised to 800 ℃ with 6.4 °/minute heat-up rates, and 800 ℃ of activation 10 hours, can obtain surface-area was 1311m
2The gac of/g.
Embodiment 7:
The Semen Crataegi of cleaning airing is packed in the carbonization-activation stove, and feeding the moisture vapor volume ratio is 59.7%, and flow velocity is 23.1cm
3/ minute.The nitrogen and the water vapor mixture body of gram charcoal, continuously 200 and 500 ℃ of each charings after 2.5 hours, it is 97.3% that vapour content is transferred to volume ratio then, the flow velocity of nitrogen and water vapor mixture is 32.1cm
3/ minute.The gram charcoal rises to 830 ℃ with 5.6 °/minute heat-up rates, and 830 ℃ of activation 8 hours, the acquisition surface-area was 1240m
2/ g gac.
Claims (4)
1, a kind of preparation method of high wear-resistant activated carbon, it is characterized in that, this gac is a raw material with shell, the fruit stone of circle or sub-circular and other gac of conforming to this requirement, the sphere that also comprises artificial shaping, there is the gac of higher mechanical strength to make raw material, preparation technology can be charing and two steps of activation carry out, and also can activate single stage method continuously after charing and finish.
2, high wear-resistant activated carbon preparation method according to claim 1 is characterized in that this gac is to adopt Semen Crataegi and Fruit of Pashi Pear nuclear to be raw material.
3, high wear-resistant activated carbon preparation method according to claim 1 is characterized in that, the preparation of elementary charcoal is that feeding containing water vapor volume ratio is 20-65%, and flow velocity is 20-110cm
3/ minute.The rare gas element of gram charcoal and the mixed gas of water vapor are respectively at 200 and 500 ℃ of charing 2-4 hours.
4, high wear-resistant activated carbon preparation method according to claim 1 is characterized in that it is 40-100% that activating process feeds the moisture vapor volume ratio, and flow velocity is 30-110cm
3/ minute.The rare gas element of gram charcoal and the mixed gas of water vapor, 700 ℃ of-1000 ℃ of activation, the optimal activation temperature is 800-850 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88107718A CN1016329B (en) | 1988-11-07 | 1988-11-07 | Process for preparing high wear-resistant activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88107718A CN1016329B (en) | 1988-11-07 | 1988-11-07 | Process for preparing high wear-resistant activated carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1042521A true CN1042521A (en) | 1990-05-30 |
| CN1016329B CN1016329B (en) | 1992-04-22 |
Family
ID=4834762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88107718A Expired CN1016329B (en) | 1988-11-07 | 1988-11-07 | Process for preparing high wear-resistant activated carbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016329B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583369A (en) * | 2012-01-12 | 2012-07-18 | 江西师范大学 | Method for preparing powdered activated carbon from longan seeds |
| CN103252212A (en) * | 2013-04-22 | 2013-08-21 | 南京师范大学 | Biomass carbon-based flue gas demercuration adsorbent and preparation method thereof |
| CN105540582A (en) * | 2016-01-25 | 2016-05-04 | 中国林业科学研究院林产化学工业研究所 | Preparation method for activated carbon sphere-activated carbon composite material |
| CN106517198A (en) * | 2016-11-27 | 2017-03-22 | 长春黄金研究院 | Pretreatment method of activated carbon for gold production |
| CN108854874A (en) * | 2018-07-26 | 2018-11-23 | 中国科学技术大学 | A kind of ultrapure carbon aerogels and preparation method thereof with superhigh specific surface area based on air-activated pore-creating |
-
1988
- 1988-11-07 CN CN88107718A patent/CN1016329B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583369A (en) * | 2012-01-12 | 2012-07-18 | 江西师范大学 | Method for preparing powdered activated carbon from longan seeds |
| CN103252212A (en) * | 2013-04-22 | 2013-08-21 | 南京师范大学 | Biomass carbon-based flue gas demercuration adsorbent and preparation method thereof |
| CN105540582A (en) * | 2016-01-25 | 2016-05-04 | 中国林业科学研究院林产化学工业研究所 | Preparation method for activated carbon sphere-activated carbon composite material |
| CN106517198A (en) * | 2016-11-27 | 2017-03-22 | 长春黄金研究院 | Pretreatment method of activated carbon for gold production |
| CN108854874A (en) * | 2018-07-26 | 2018-11-23 | 中国科学技术大学 | A kind of ultrapure carbon aerogels and preparation method thereof with superhigh specific surface area based on air-activated pore-creating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016329B (en) | 1992-04-22 |
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