CN103230660A - A green smelting method for rapid arsenic removal from arsenic-containing mine tailings - Google Patents
A green smelting method for rapid arsenic removal from arsenic-containing mine tailings Download PDFInfo
- Publication number
- CN103230660A CN103230660A CN201310123155XA CN201310123155A CN103230660A CN 103230660 A CN103230660 A CN 103230660A CN 201310123155X A CN201310123155X A CN 201310123155XA CN 201310123155 A CN201310123155 A CN 201310123155A CN 103230660 A CN103230660 A CN 103230660A
- Authority
- CN
- China
- Prior art keywords
- arsenic
- tailings sand
- temperature
- microwave
- removal
- 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.)
- Granted
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a method for collecting arsenic or arsenide through microwave heating arsenic-containing mine tailings, and the specific steps are as follows: placing the mine tailings into an airtight, high temperature-resisting non-metallic container which is placed in a microwave chamber; separately starting a recovery system, a condensation system and a microwave generator in sequence; when a temperature rises again after a stable value of the temperature of mine tailings appears at the temperature range of 360 +/- 130 DEG C, turning off the microwave generator; and when the temperature drops below 90 DEG C, turning off the condensation system and the recovery system to collect the arsenic or arsenide. The method of the invention is advantageous by realizing no secondary pollutions and rapid arsenic-removal operations; according to the method, significant improvement of prior arsenic-removal methods is obtained; compared with prior wet arsenic-removal methods such as tailing arsenic-removal by high-temperature fuel heating or strong acid and strong alkali heating and pressing, the arsenic-removal time in the method of the invention is significantly shortened by tens to hundreds of times, no secondary pollutions such as arsenic are generated, the removed arsenide becomes an useful product after being collected, after the arsenic removal, and residual mine tailings become available materials without arsenic contaminations, thus effectively turning solid arsenic-containing waste into treasure.
Description
Affiliated technical field
The present invention is the green smelting process of the quick dearsenification of a kind of CHARACTERISTICS OF TAILINGS SAND, is the microwave arsenic removing method of the novel processing CHARACTERISTICS OF TAILINGS SAND of environmental friendliness of non-secondary pollution low-consumption high-efficiency.Belong to solid waste detoxication technique field, relate to a kind of new technology of industrial solid castoff arsenic removal.
Background technology
Arsenic is commonly called as and is metalloid, and toxicity is extremely strong, and has carcinogenesis.It can enter environment by operation of nature and human activity.The whole world is annual because the arsenic that mankind's activity enters in the environment is about 1,200,000 tons, and the arsenic that operation of nature is discharged in the environment is about 2.2 ten thousand tons, and the arsenic amount is adopted at least up to more than 1,390,000 tons by China, and wherein arsenic amount maximum is adopted in Guangxi, Yunnan, Hunan.Adopting in the smelting process of mining industry arsenic, 70% arsenic is abandoned and is stayed in mine tailing.The arsenic that mining activities discharges threatens health by soil and food chain approach, and is especially more outstanding in the intensive southwest problem of mining activities.China has that ten thousand people suffer the influence of drinking water type and the high arsenic of coal-burning surplus in the of 267, is one of the most serious country of endemic arsenic poisoning harm.The improvement technology of arsenic-containing waste water and waste residue has been become the focus of whole world research.The processing of arsenic-containing waste residue changes the arsenic trioxide that firing method process is handled drying regime to the development and use of arsenic gradually from " Gu arsenic " at present, is difficult to guarantee the good working environment.This method carries that the arsenic cost is lower, and treating capacity is big, if but the bad second environmental pollution that very easily causes of production process control replaced by pyrogenic process wet method GC-MS gradually at present, this method can improve the rate of recovery of arsenic, can reduce cost again, reduces secondary pollution.Hydrometallurgic recovery arsenic and other valuable metals are the focuses of studying at present, and hydrometallurgic recovery does not produce dust, can satisfy environmental requirement, has low energy consumption, of low pollution, efficient advantages of higher, but flow process is comparatively complicated, and processing cost is higher relatively.When taking full advantage of the arsenic resource, should develop the developmental research of the new technologies such as biological metallurgy, membrane separation technique and mechanical activation leaching that contain the arsenic discarded object, realize the comprehensive utilization of arsenic resource, for new approach is opened up in the improvement of arsenic contamination.
Arsenic in the CHARACTERISTICS OF TAILINGS SAND all exists with the sulfarsenide form, and the toxicity of arsenic not only causes CHARACTERISTICS OF TAILINGS SAND to the pollution of environment, influences the bottleneck difficult problem of CHARACTERISTICS OF TAILINGS SAND resource especially at present.Microwave has selective absorption to iron content, sulphur, water, sulfarsenide material etc., utilize this absorption characteristic of microwave to carry out the collection of non-secondary pollution again fast to containing the arsenic CHARACTERISTICS OF TAILINGS SAND, can carry out various pyrogenic processes or hydrometallurgy after making the CHARACTERISTICS OF TAILINGS SAND detoxifcation, solved the crucial difficult problem of arsenic-containing ores harmless resource utilization, the quick dearsenification new method of a kind of green of providing of arsenic-containing ores is provided, will plays huge impetus to the efficient development and use of non-environmental-pollution that contain arsenic minerals product resource.
Summary of the invention
The objective of the invention is to contain the deficiency that the arsenic poison pollutes treatment technology at existing solid waste, provide a kind of novel processing of environmental friendliness of non-secondary pollution low-consumption high-efficiency to contain the method for arsenic CHARACTERISTICS OF TAILINGS SAND arsenic.This method is harmful arsenide in the quick removal CHARACTERISTICS OF TAILINGS SAND of low-consumption high-efficiency not only, arsenide is collected into useful arsenide, and use this method not produce secondary pollution, this method becomes CHARACTERISTICS OF TAILINGS SAND class solid waste the material of the value utilized, and it provides a kind of new method that noxious waste pollution is administered that contains.
In order to realize above-mentioned target, the present invention puts into high temperature resistant nonmetallic vessel with CHARACTERISTICS OF TAILINGS SAND, container is placed microwave cavity, after will sealing with sealing ring between container and the container cover, microwave generator closes, open the air pump system, in the unlatching condenser system normal-temperature water or wind are entered in the condenser system, open microwave generator microwave is carried out 〉=0.1w/cm CHARACTERISTICS OF TAILINGS SAND
2Radiation, along with CHARACTERISTICS OF TAILINGS SAND is heated, system temperature constantly rises, when temperature reading heated up after stationary value appears in 360 ± 130 ℃ of scopes again, arsenic and arsenide distilled substantially and finish in the CHARACTERISTICS OF TAILINGS SAND, closed microwave generator this moment, when being down to below 90 ℃ to system temperature meter reading, close the gentle pumping system of condenser system again, open condenser system below discharging lid, remove and collect arsenic or arsenide.
This method is improved significantly to existing CHARACTERISTICS OF TAILINGS SAND arsenic removal, compare wet method dearsenicating methods such as existing high-temperature fuel heated type CHARACTERISTICS OF TAILINGS SAND dearsenicating method or strong acid and strong base heating pressurization, after being collected, the arsenide that this method arsenic removal time significantly shortens tens to hundred times, do not have secondary pollution deposits yields such as arsenic, deviate from becomes useful product, residual CHARACTERISTICS OF TAILINGS SAND becomes the available material of no arsenic contamination after by the dearsenification poison, and effectively will contain the arsenic solid waste turns waste into wealth.
The present invention is according to the microwave action principle, and take all factors into consideration the existing comprehensive characteristics that contain the arsenic CHARACTERISTICS OF TAILINGS SAND, develop a kind of green arsenic removing method fast from contain the arsenic CHARACTERISTICS OF TAILINGS SAND, realize containing the harmless resource utilization operation of arsenic CHARACTERISTICS OF TAILINGS SAND, effectively solved the current arsenic CHARACTERISTICS OF TAILINGS SAND bottleneck difficult problem that contains.
The present invention: a kind of green smelting process of quick dearsenification from contain the arsenic CHARACTERISTICS OF TAILINGS SAND has following feature
1, described treatment system is to contain arsenic CHARACTERISTICS OF TAILINGS SAND, microwave generator, the high temperature resistant nonmetallic vessel of sealing, flow guide system, condenser system, recovery system by≤100 purposes to constitute.Described method is that the CHARACTERISTICS OF TAILINGS SAND that contains wave absorbing agent is put into high temperature resistant nonmetallic vessel, place microwave cavity, open recovery system, condenser system and microwave generator, when the CHARACTERISTICS OF TAILINGS SAND temperature heats up after one section stationary value appears in 360 ± 130 ℃ of scopes again, close microwave generator, be down to below 90 ℃ to temperature, close condenser system and recovery system, collect arsenic or arsenide.
2, equipment according to claim 1 is characterized in that: described equipment is that (institute's supplied gas is by forming vacuum state (institute reaches vacuum and is lower than 700mmHg) or air feed state in the recovery system
ArgonGas,
HeliumGas,
NeonGas, nitrogen, carbon dioxide or above-mentioned in gas is formed more than two kinds gas, institute reaches pressure greater than 110KPa), its role is to make that arsenic and arsenide are imported in the condenser system in the container, reclaim then.
3, the high temperature resistant nonmetallic vessel of described sealing can be made by materials such as refractory ceramics, high temp glass, and ability is high temperature more than 600 ℃, and the container appearance has the inorganic heat insulation material layer.
4, described condenser system can be water-cooled, the air-cooled or air-cooled combined type of water-cooled, but the outlet temperature of its condenser system≤90 ℃.
5, described microwave generator is to the power density 〉=(0.1w/cm of CHARACTERISTICS OF TAILINGS SAND
2).
6, described suction wave absorbing agent refers to material or their compositions such as sulfur-bearing, water, iron, manganese, and its wave absorbing agent amount is lower than the CHARACTERISTICS OF TAILINGS SAND amount, and microwave is to before the CHARACTERISTICS OF TAILINGS SAND heating, and wave absorbing agent needs fully mix with CHARACTERISTICS OF TAILINGS SAND.
Description of drawings
Accompanying drawing: concrete device for carrying out said structural representation of the present invention
1, microwave generator
2, seal high temperature resistant nonmetallic vessel
3, flow guide system
4, condenser system
5, retracting device
Specific embodiments
Be described further below in conjunction with embodiment, following case study on implementation is intended to illustrate the present invention rather than limitation of the invention further.
Example 1, get Guangxi Da Chang tin ore CHARACTERISTICS OF TAILINGS SAND and (contain arsenic 2.6%, iron 19%) 2000G, granularity less than 150 purposes contain the arsenic CHARACTERISTICS OF TAILINGS SAND (because of in the sample wave absorbing agent such as iron content do not add wave absorbing agent), place a jar outer refractory ceramics jar with asbestos fibre cloth, the ceramic cover of band high temperature wireway is covered at ceramic pot, and it is with the asbestos fibre band that ceramic pot is good with the lid gap sealing, door for microwave oven closes, after opening the water route switch and vavuum pump of condenser system, the vacuum of observing vacuum meter is during to 550mmHg, open microwave power supply and transfer to 800W, observe ceramic cap upper end thermocouple thermometer reading, saw in 9 minutes on the temperature when spending to 299, rate of rise in temperature diminishes rapidly, temperature is accelerated again to rise after 13 minutes, close microwave power supply this moment, see after 28 minutes that temperature reading drops to 53 degree, close vacuum pump switch and condensed water switch, dismantle condenser system upper end connecting screw, receive the condenser system lower end with plastic tank, dismantle condenser system lower end connecting screw, arsenic and arsenide in the condenser system tubulation are gone into clearly in the plastic tank with brush, get 50G and chemically examine, arsenic content is 95.3% as a result, the heavy 47.4G of arsenic, the rate of recovery is 90.1%.
Example 2, get coloured garden, Chenzhou CHARACTERISTICS OF TAILINGS SAND and (contain arsenic 1.6%, iron 17.3%, manganese 2.2%) 3000G, granularity is less than 200 orders, because of in the sample wave absorbing agent such as iron content do not add wave absorbing agent, place a jar outer refractory ceramics jar with asbestos fibre cloth, the ceramic cover of band high temperature wireway is covered at the refractory ceramics jar, and with asbestos fibre band good seal ceramic pot and lid, door for microwave oven closes, after opening the water route switch and argon gas pumping system of condenser system, when observing manometric reading to 135KPa, open microwave power supply and transfer to 1000W, observe ceramic cap upper end thermocouple thermometer reading, saw in 11 minutes on the temperature when spending to 317, rate of rise in temperature diminishes rapidly, and temperature is accelerated again to rise after 17 minutes, closes microwave power supply this moment, see after 32 minutes that temperature reading drops to 55 degree, close vacuum pump switch and condensed water switch, dismantle condenser system upper end connecting screw, receive the condenser system lower end with plastic tank, dismantle condenser system lower end connecting screw, arsenic and arsenide in the condenser system tubulation are gone into clearly in the plastic tank with brush, get 50G and chemically examine, arsenic content is 91.6% as a result, the heavy 43.5G of arsenic, the rate of recovery is 90.6%.
Example 3, with the celestial CHARACTERISTICS OF TAILINGS SAND 50KG (containing arsenic 2.3%) in precious jade hilllock, Hunan, sieve is got granularity and is got mine tailing less than 200 order breezes sieve, with the 5KG granularity less than 200 purpose iron oxide red powder fully grind even after, place groove to have the refractory ceramics groove of asbestos fibre cloth outward, the refractory ceramics lid of band high temperature conduit is placed on the ceramic trough, with asbestos fibre cloth sealed ceramic groove and lid, door for microwave oven closes, open condensation system water way switch and argon gas pumping system switch, regulating argon gas pump pressure water surface to the bottle of condenser system lower end has kept till the continuous air bubbles, open microwave power supply and transfer to 5000KW, observe after 15 minutes on the temperature reading when spending to 326, temperature rises and significantly reduces, temperature begins to recover the rate of climb again after 25 minutes, close microwave power supply this moment, see after 41 minutes that temperature reading drops to 58 degree, close argon gas pumping system switch and condensed water switch, dismantle condenser system upper end connecting screw, receive the condenser system lower end with plastic tank, dismantle condenser system lower end connecting screw, clearly go in plastic tank with brush arsenic and arsenide in the condenser system tubulation, getting 100G chemically examines, arsenic content is 92.2% as a result, the heavy 1.03KG of arsenic, and the rate of recovery is 89.6%.
Claims (6)
1. quick green smelting process of dearsenification from contain the arsenic CHARACTERISTICS OF TAILINGS SAND is characterized in that: described treatment system is to contain arsenic CHARACTERISTICS OF TAILINGS SAND, microwave generator, the high temperature resistant nonmetallic vessel of sealing, flow guide system, condenser system, recovery system by≤100 purposes to constitute.Described method is that the CHARACTERISTICS OF TAILINGS SAND that contains wave absorbing agent is put into airtight high temperature resistant nonmetallic vessel, place microwave cavity, open recovery system, condenser system and microwave generator according to the order of sequence respectively, when the CHARACTERISTICS OF TAILINGS SAND temperature heats up after one section stationary value appears in 360 ± 130 ℃ of scopes again, close microwave generator, be down to below 90 ℃ to temperature, close condenser system and recovery system, collect arsenic or arsenide.
2. equipment according to claim 1 is characterized in that: described equipment is that (institute's supplied gas is by forming vacuum state (institute reaches vacuum and is lower than 700mmHg) or air feed state in the recovery system
ArgonGas,
HeliumGas,
NeonGas, nitrogen, carbon dioxide or above-mentioned in gas is formed more than two kinds gas, institute reaches pressure greater than 110KPa), its role is to make that arsenic and arsenide are imported in the condenser system in the container, reclaim then.
3. method according to claim 1, it is characterized in that: described airtight high temperature resistant nonmetallic vessel can be made by materials such as refractory ceramics, high temp glass, and ability is high temperature more than 600 ℃, and the container appearance has the inorganic heat insulation material layer.
4. method according to claim 1, it is characterized in that: described condenser system can be water-cooled, the air-cooled or air-cooled combined type of water-cooled, but the outlet temperature of its condenser system≤90 ℃.
5. method according to claim 1, it is characterized in that: described microwave generator is to the power density 〉=(0.1w/cm of CHARACTERISTICS OF TAILINGS SAND
2).
6. method according to claim 1, it is characterized in that: described suction wave absorbing agent refers to material or their compositions such as sulfur-bearing, water, iron, manganese, its wave absorbing agent amount is lower than the CHARACTERISTICS OF TAILINGS SAND amount, and microwave is to before the CHARACTERISTICS OF TAILINGS SAND heating, and wave absorbing agent needs fully mix with CHARACTERISTICS OF TAILINGS SAND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123155.XA CN103230660B (en) | 2013-04-10 | 2013-04-10 | A kind of from the green smelting process containing dearsenization quick arsenic CHARACTERISTICS OF TAILINGS SAND |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123155.XA CN103230660B (en) | 2013-04-10 | 2013-04-10 | A kind of from the green smelting process containing dearsenization quick arsenic CHARACTERISTICS OF TAILINGS SAND |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103230660A true CN103230660A (en) | 2013-08-07 |
| CN103230660B CN103230660B (en) | 2016-06-08 |
Family
ID=48878768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310123155.XA Expired - Fee Related CN103230660B (en) | 2013-04-10 | 2013-04-10 | A kind of from the green smelting process containing dearsenization quick arsenic CHARACTERISTICS OF TAILINGS SAND |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103230660B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551378A (en) * | 2013-11-20 | 2014-02-05 | 华北电力大学 | Combined microwave oxidation compound repair system and method aiming at organic arsenic pollution in soil |
| CN111112307A (en) * | 2020-02-10 | 2020-05-08 | 长江师范学院 | Arsenic fixation method based on arsenic iron white matte |
| CN112629165A (en) * | 2020-12-22 | 2021-04-09 | 广东先导稀材股份有限公司 | Rapid drying method of arsenic sulfide slag |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1246259A2 (en) * | 2001-03-27 | 2002-10-02 | Agilent Technologies, Inc. (a Delaware corporation) | Short turn-off time photoconductive switch |
| CN1616611A (en) * | 2004-09-18 | 2005-05-18 | 太原理工大学 | Method for removing arsenic before burning coal |
| CN101225467A (en) * | 2008-02-25 | 2008-07-23 | 沈阳理工大学 | Method for pretreating refractory gold ore by employing microwave calcining |
| CN102181668A (en) * | 2011-03-02 | 2011-09-14 | 广西壮族自治区地质矿产测试研究中心 | Method for jointly extracting arsenic from high-arsenic manganese ore tailings |
-
2013
- 2013-04-10 CN CN201310123155.XA patent/CN103230660B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1246259A2 (en) * | 2001-03-27 | 2002-10-02 | Agilent Technologies, Inc. (a Delaware corporation) | Short turn-off time photoconductive switch |
| CN1616611A (en) * | 2004-09-18 | 2005-05-18 | 太原理工大学 | Method for removing arsenic before burning coal |
| CN101225467A (en) * | 2008-02-25 | 2008-07-23 | 沈阳理工大学 | Method for pretreating refractory gold ore by employing microwave calcining |
| CN102181668A (en) * | 2011-03-02 | 2011-09-14 | 广西壮族自治区地质矿产测试研究中心 | Method for jointly extracting arsenic from high-arsenic manganese ore tailings |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551378A (en) * | 2013-11-20 | 2014-02-05 | 华北电力大学 | Combined microwave oxidation compound repair system and method aiming at organic arsenic pollution in soil |
| CN111112307A (en) * | 2020-02-10 | 2020-05-08 | 长江师范学院 | Arsenic fixation method based on arsenic iron white matte |
| CN112629165A (en) * | 2020-12-22 | 2021-04-09 | 广东先导稀材股份有限公司 | Rapid drying method of arsenic sulfide slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103230660B (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bobicki et al. | Microwave heating of ultramafic nickel ores and mineralogical effects | |
| CN107470327B (en) | Comprehensive recycling treatment system and method for electronic waste | |
| CN107377598B (en) | Electronic waste recycling system | |
| CN101914685B (en) | Method for preparing metal iron and zinc/zinc oxide from electric furnace dust | |
| CN106319199B (en) | Pretreatment method of antimony-and arsenic-containing refractory gold ore | |
| CN106756113A (en) | A kind of method that arsenic sulfide slag reduction sulphur fixing roast is directly produced metallic arsenic | |
| Wang et al. | Leaching of vanadium from stone coal with sulfuric acid | |
| CN105483395A (en) | Method for selectively and efficiently extracting zinc and removing iron from zinc-containing electric furnace dust | |
| CN103230660A (en) | A green smelting method for rapid arsenic removal from arsenic-containing mine tailings | |
| Ye et al. | Microwave-assisted self-reduction of composite briquettes of zinc ferrite and carbonaceous materials | |
| CN104962744A (en) | Method for harmlessly removing lead from waste CRT (cathode ray tube) cone glass and preparing glass micro-spheres | |
| CN106517318B (en) | A kind of method that utilization waste and old lead acid accumulator lead plaster prepares vulcanized lead superfine powder | |
| CN104759462B (en) | A kind of Soil leaching upgrading prosthetic device with tail gas treating function | |
| CN103407987A (en) | Electrolytic aluminum waste material separating method and electric arc furnace | |
| CN102382992A (en) | Method for treating high-antimony low-silver-tin anode slime | |
| Li et al. | Recycling lead from waste lead-acid batteries by the combination of low temperature alkaline and bath smelting | |
| CN103820587A (en) | Method for removing arsenic from arsenic-containing iron-rich slag by volatilization | |
| CN205170943U (en) | Mining pre treatment device | |
| Doniyor et al. | The results of laboratory research processing of zinc cake zinc plant JSC" Almalyk MMC" | |
| CN102357504A (en) | Recovery method of lead in waste circuit board | |
| CN107574305A (en) | A kind of high concn. arsenic and lead matte Recovering Copper and sulphur technique | |
| CN204661804U (en) | The device of precious metal in trapping low grade noble metal raw material | |
| CN208733195U (en) | A kind of device of harmless treatment arsenic sulfide slag | |
| CN208234963U (en) | A kind of equipment of arsenic lead mixed vapour fractional condensaion | |
| CN104313343A (en) | Oxidizing roasting-microwave-assisted leaching gold extraction method for high-arsenic gold-bearing sulfur concentrate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180928 Address after: 423000 building four, Taiwan Industrial Park, Bailu Tang Town, Suxian District, Chenzhou, Hunan. Patentee after: CHENZHOU HI-TECH CREATIVE INDUSTRIES INCUBATOR CO., LTD. Address before: 510275 No. 135 West Xingang Road, Guangdong, Guangzhou Patentee before: Sun Yat-sen University |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20200410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |