CN103508507B - The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion - Google Patents
The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion Download PDFInfo
- Publication number
- CN103508507B CN103508507B CN201210220254.5A CN201210220254A CN103508507B CN 103508507 B CN103508507 B CN 103508507B CN 201210220254 A CN201210220254 A CN 201210220254A CN 103508507 B CN103508507 B CN 103508507B
- Authority
- CN
- China
- Prior art keywords
- steel slag
- slag tailings
- tailings
- magnetic separation
- belong
- 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
Links
Abstract
The invention discloses a kind of utilize magnetic separation after steel slag tailings remove underwater gold and belong to the method for ion.The less steel slag tailings of iron-holder after this method utilizes magnetic separation is removed the heavy metal ion in waste water, and its step comprises: carried out by the steel slag tailings after magnetic separation grinding, after dry, screening, be placed in reactor; Waste water (containing heavy metal ion) is added in reactor, and fully mixes; Solid-liquid separation tailings, obtains processing rear water outlet.The present invention's material for water treatment used is the steel slag tailings after magnetic separation, with low cost, wide material sources, than great, therefore is convenient to after using reclaim, not easily produces secondary pollution.In addition, steel slag tailings itself belongs to solid waste, is applied in the middle of wastewater treatment, reaches the object of " treatment of wastes with processes of wastes against one another ", has good economy and environmental benefit.
Description
Technical field
The invention belongs to Industrial Wastewater Treatment and solid waste resource recovery utilizes field, relate to a kind for the treatment of technology utilizing the steel slag tailings heavy metal ion waste water after magnetic separation.
Background technology
In recent years, along with the development of society, heavy metal pollution become that social development brings one the sharp sword that can not ignore, deep affects environmental protection, especially the research and development direction of water environment protection.Heavy metal-pollutedly have a finger in every pie the environmental pollution caused by heavy metal or its compound.Heavy metal ion is mainly from industries such as nonferrous smelting, plating, chemical industry, printing and dyeing, mining industry, and after entering environment as polluter, can not be degraded by Institute of Micro-biology, mutual conversion between form and dispersion and enrichment can only be there is, and transmit enrichment along biological chain, finally enter human body by aquatic products and plant, jeopardize human body health.Such as, cadmium is a kind of non-essential element of human body, has bio-toxicity, and long-term absorption can cause cadmium to be accumulated in vivo, can cause the disease of respiratory tract and the aspect such as liver, kidney, causes " itai-itai ".At the beginning of 2011 4 months, China first " 12 " ad hoc planning---" heavy metal pollution integrated control " 12 " planning " obtains State Council and formally gives an written reply, control program makes every effort to control 5 heavy metal species, and 5 heavy metal species are respectively: lead, mercury, cadmium, chromium, arsenic.Therefore, the stage that can not be ignored has been arrived in the improvement for the heavy metal in waste water.Have a lot for the treatment of the method for heavy metal ion in water, as: biotechnology repairing method, chemical precipitation method, absorption method, ion-exchange, adsorption-flocculation method etc., but because the processing cost of these methods is generally higher, be restricted when being applied in the middle of actual wastewater treatment, therefore find a kind of economical and practical material for water treatment extremely urgent.
Slag is the slag of discharging in steelmaking process, namely in steelmaking process, utilize the element such as carbon, silicon, manganese, phosphorus in air or oxygen deoxidation furnace charge (mainly the pig iron), and the slag formed that at high temperature reacts with flux (mainly lime stone), its formation mainly comprises: the impurity that the oxide of the oxidized rear generation of each element in metal charge, the gainster be etched and stove material, metal charge are brought into and be adjustment iron and steel character and the slag making materials etc. that adds specially.Therefore often say: the process of steel-making is exactly the process of a slag making.The main chemical of slag has CaO, SiO
2, FeO, Fe
2o
3, Al
2o
3, MgO etc., along with main body mineral facies difference to some extent in the different slag of basicity, but its composition substantially constant.
Summary of the invention
The object of the present invention is to provide a kind of utilize magnetic separation after steel slag tailings method that the heavy metal ion in water is removed, the present invention can remove the heavy metal ion in water effectively, reduce the harm that in water, heavy metal ion is brought, and secondary pollution can not be produced to environment after using.
The technical solution realizing the object of the invention is:
(1) steel slag tailings after magnetic separation is carried out grind, dry, screening, for subsequent use;
(2) steel slag tailings described in (1) is added in the reactor of effluent containing heavy metal ions in proportion;
(3) make steel slag tailings and effluent containing heavy metal ions fully react to mix;
(4) solid-liquid separation tailings, obtains processing rear water outlet;
In step (1), slag source comprises converter slag, open hearth slag and electric furnace slag.After magnetic separation, after grinding, steel slag tailings that is dry, screening grind, particle diameter should between 5 ~ 500 orders.
The ratio that adds described in step (2) should at 1:1 ~ 1:500(by heavy metal: steel slag tailings mass ratio range) between, at different conditions, be improve treatment effect, what increase tailings and heavy metal ion adds ratio.This method is applicable to the process of the effluent containing heavy metal ions of various initial concentration, and described heavy metal ion comprises: the metal ions such as cadmium, copper, zinc, lead, chromium.And in processing procedure can adjust ph and temperature at optimum range.
In step (3), course of reaction can adopt dynamically continuous or static batch process, and comprise the method mixing such as vibration and stirring, the reaction time is between 1h ~ 36h.
The method of Separation of Solid and Liquid comprises the methods such as precipitation, centrifugal, filtration in step (4), and the sedimentation time is between 30 ~ 900min, and separation or reclaim reacted tailings.
Compared with prior art, its remarkable advantage: the steel slag tailings for abandoning after magnetic separation iron that the present invention selects, wherein iron-holder is few, and cost is more cheap, originates more extensive in the present invention.
Because the main component in steel slag tailings is CaO, Al
2o
3, the metal oxide such as MgO, easily generate hydroxide ion when it is placed in water, make solution alkalize.And the heavy metal ion in water can form stable precipitation of hydroxide with hydroxide ion, this coagulating sedimentation effect of tailings therefore can be utilized to remove part heavy metal ion in waste water.In addition, slag is loose porous, and specific area is large, has certain adsorption capacity, therefore steel slag tailings or a kind of well adsorption treatment agent.In addition, steel slag tailings also has than great, the feature that settling property is good, therefore is convenient to after using reclaim, and not easily produces secondary pollution.These physicochemical properties that comprehensive steel slag tailings has, the heavy metal ion utilizing steel slag tailings to remove in waste water is a kind of effective way.In addition, namely slag itself is a kind of solid waste, utilizes slag processing waste water, makes it reach emission request, and realizes the object of " treatment of wastes with processes of wastes against one another ", and good economy and environmental benefit.
The present invention is using the steel slag tailings after magnetic separation as water treatment agent, the physicochemical properties of himself are utilized to can be good at removing the heavy metal ion in water, and treatment effect is stablized, operating process is simple, be easy to grasp, wide material sources, with low cost, relative to the chemical precipitation method generally used and traditional sorbing material, there is significant advantage.Therefore, the present invention has good economic worth, practical value and the value of environmental protection for the heavy metal ion removed in waste water.
Accompanying drawing explanation
Fig. 1 is for being 25 DEG C in temperature, and rotating speed is under the neutrallty condition of 150r/min, and 90 ~ 150 order steel slag tailings are to the adsorption effect of Cd (II) in variable concentrations cadmium solution.Wherein abscissa is the concentration of Cd (II) in solution after adsorption equilibrium, and ordinate is the adsorbance of steel slag tailings to Cd (II).As seen from the figure, steel slag tailings enlarges markedly along with the increase of concentration for the adsorbance of the Cd (II) in water.
Fig. 2 is in neutral conditions, and the steel slag tailings of different time is to the adsorption effect of Cd in cadmium solution (II).Wherein abscissa is adsorption time, and ordinate is the adsorbance of steel slag tailings to Cd (II).As seen from the figure, steel slag tailings is removed comparatively rapid to the Cd (II) in water.
Fig. 3 is the impact of steel slag tailings dosage on absorption Cd (II).
Fig. 4 is under the condition of different rotating speeds, and steel slag tailings is to the variation tendency of the clearance of Cd in solution (II).Wherein abscissa is rotating speed, and ordinate is the clearance of steel slag tailings for Cd in solution (II).As seen from the figure, under different shaking speed, steel slag tailings all has good removal effect for Cd (II).
Fig. 5 is the impact of difference for Cd (II) in steel slag tailings removal solution of particle diameter.Wherein abscissa is particle diameter, and ordinate is the clearance of steel slag tailings to Cd (II).
Fig. 6 is under the condition adding constant rate, and different Cd (II) initial concentrations is for the impact of steel slag tailings adsorbance.Wherein abscissa is Cd (II) initial concentration, and ordinate is the adsorbance of steel slag tailings to Cd (II).Detailed description of the invention
Below for cadmium ion (Cd (II)) and copper ion (Cu (II)), the invention will be further described in conjunction with the accompanying drawings and embodiments:
embodiment 1:taking particle diameter is 90 ~ 150 object steel slag tailings powder 0.2g, and add in the neutral cadmium-containing solution of pH of 200ml variable concentrations, putting into constant-temperature table, is 25 DEG C in temperature, and rotating speed is sample after reacting 24h under the condition of 150r/min.After water sample precipitates 30 minutes, filter, measure the concentration of cadmium in water outlet.The concentration of cadmium adopts atomic absorption spectrophotometer to measure, and treatment effect is shown in accompanying drawing 1, and wherein tailings increases along with the increase of initial concentration for the adsorbance of the cadmium ion in water, and maximal absorptive capacity is about 150mg/g.
embodiment 2:taking particle diameter is 90 ~ 150 object steel slag tailings powder 1g, and adding 1000ml concentration is in the neutral cadmium-containing solution of pH of 100mg/L, mixes, and sample in the different time under constant temperature blender with magnetic force condition.Water sample under the condition of 4000r/min centrifugal 10 minutes, more after filtering, measure the concentration of cadmium in water outlet.The concentration of cadmium adopts atomic absorption spectrophotometer to measure, and treatment effect is shown in accompanying drawing 2, as seen from the figure, is greater than 1h when reacted, and removal effect is better, and keeps stable.
embodiment 3: taking Different Weight particle diameter is 90 ~ 150 object steel slag tailings powder, namely add in the neutral cadmium-containing solution of pH that 100ml concentration is 100mg/L with the different ratios that adds, putting into constant-temperature table, is 25 DEG C in temperature, and rotating speed is sample after reacting 24h under the condition of 150r/min.After water sample precipitates 60 minutes, filter, measure the concentration of cadmium in water outlet.The concentration of cadmium adopts atomic absorption spectrophotometer to measure, and its treatment effect is shown in accompanying drawing 3, as seen from the figure, under finite concentration, there is the best and adds ratio.
embodiment 4:taking particle diameter is 90 ~ 150 object steel slag tailings powder 1g, and adding 1000ml concentration is in the neutral cadmium-containing solution of pH of 100mg/L, samples after carrying out mixing 2h under different rotating speeds.Water sample under the condition of 4000r/min centrifugal 10 minutes, more after filtering, measure the concentration of cadmium in water outlet.The concentration of cadmium adopts atomic absorption spectrophotometer to measure, and its treatment effect is shown in accompanying drawing 4, and as seen from the figure, under different mixing speeds, tailings all has good removal effect.
embodiment 5:take the steel slag tailings powder of different-grain diameter, in mass ratio for 1:10(cadmium: tailings) ratio to add concentration be that in the neutral cadmium-containing solution of 100mg/L, be 25 DEG C in temperature, rotating speed is sample after reacting 2h under the condition of 180r/min.Water sample under the condition of 4000r/min centrifugal 10 minutes, more after filtering, measure the concentration of cadmium in water outlet.The concentration of cadmium adopts atomic absorption spectrophotometer to measure, and its treatment effect is shown in accompanying drawing 5.As seen from the figure, clearance increases along with the reduction of particle diameter, but overall clearance is all more than 65%.
embodiment 6:take 90 ~ 150 object steel slag tailings powder, in mass ratio for 1:10(cadmium: tailings) ratio add in the neutral cadmium-containing solution of variable concentrations, be 30 DEG C in temperature, rotating speed is sample after reacting 2h under the condition of 180r/min.Water sample under the condition of 4000r/min centrifugal 10 minutes, more after filtering, measure the concentration of cadmium in water outlet.The concentration of cadmium adopts atomic absorption spectrophotometer to measure, and its treatment effect is shown in accompanying drawing 6.As seen from the figure, when adding constant rate, initial concentration is little for the impact of clearance, and therefore, the ratio of adding is the key factor controlling removal effect.
embodiment 7:according to the implementation method of above embodiment, same experiment is carried out to copper ion (Cu (II)).Result shows, in the ratio that adds at 1:5 ~ 1:20(copper: tailings), the reaction time, clearance all reached more than 90% when 1h ~ 36h, illustrated that the steel slag tailings after magnetic separation also has good removal effect for the copper ion in water.
Can be illustrated by above embodiment, steel slag tailings all has good treatment effect for the heavy metal ion in water.Use steel slag tailings process effluent containing heavy metal ions, under certain condition after hybrid reaction, effluent quality can reach the requirement of the industrial wastewater discharge standard of national regulation.
Claims (7)
1. utilize the removal of the steel slag tailings after magnetic separation underwater gold to belong to a method for ion, it is characterized in that the method comprises the following steps:
(1) steel slag tailings after magnetic separation is carried out grind, after dry, screening, for subsequent use;
(2) steel slag tailings described in step (1) is added in the reactor containing effluent containing heavy metal ions in proportion;
(3) make steel slag tailings and contain the abundant hybrid reaction of effluent containing heavy metal ions;
(4) solid-liquid separation tailings, obtains the water outlet processing after-purification.
2. belong to the method for ion according to the removal of the steel slag tailings after the magnetic separation underwater gold that utilizes described in claim 1, it is characterized in that the steel slag tailings source described in step (1) comprises converter slag, open hearth slag and electric furnace slag.
3. belong to the method for ion according to the removal of the steel slag tailings after the magnetic separation underwater gold that utilizes described in claim 1, it is characterized in that: the particle diameter of the steel slag tailings after the magnetic separation described in step (1) is between 5 ~ 500 orders.
4. according to utilizing the steel slag tailings after magnetic separation to remove underwater gold to belong to the method for ion, it is characterized in that described in claim 1: the ratio that adds described in step (2) between 1:1 ~ 1:500, by heavy metal: steel slag tailings mass ratio range.
5. belong to the method for ion according to the removal of the steel slag tailings after the magnetic separation underwater gold that utilizes described in claim 1, it is characterized in that: the reactive mode of the reactor described in step (2) is static reaction or dynamic response.
6. belong to the method for ion according to the removal of the steel slag tailings after the magnetic separation underwater gold that utilizes described in claim 1, it is characterized in that: the reaction time described in step (3) is 1h ~ 36h.
7. belong to the method for ion according to the removal of the steel slag tailings after the magnetic separation underwater gold that utilizes described in claim 1, it is characterized in that: the method for the Separation of Solid and Liquid described in step (4) is precipitation, centrifugal or filtration, and the sedimentation time is between 30 ~ 900min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210220254.5A CN103508507B (en) | 2012-06-29 | 2012-06-29 | The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210220254.5A CN103508507B (en) | 2012-06-29 | 2012-06-29 | The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103508507A CN103508507A (en) | 2014-01-15 |
| CN103508507B true CN103508507B (en) | 2015-12-02 |
Family
ID=49892002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210220254.5A Expired - Fee Related CN103508507B (en) | 2012-06-29 | 2012-06-29 | The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103508507B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217978B (en) * | 2014-06-11 | 2017-06-20 | 南京理工大学 | A kind of resource recycles the device and technique of production slag cement |
| CN105060439A (en) * | 2015-08-28 | 2015-11-18 | 上海中冶环境工程科技有限公司 | Method for treating acid chromium-contained polluted waste water with molten iron residues as raw material |
| CN105800711A (en) * | 2016-05-27 | 2016-07-27 | 北京泰克美高新技术有限公司 | Method for treating hexavalent chromium in wastewater by using gold tailing products |
| CN106865729A (en) * | 2017-03-22 | 2017-06-20 | 中钢集团武汉安全环保研究院有限公司 | A kind of method of utilization molten iron pretreatment desulfurizing Slag treatment containing chromium heavy metal wastewater thereby |
| CN110624498B (en) * | 2018-06-21 | 2022-08-16 | 宝山钢铁股份有限公司 | Composite steel slag-based heavy metal adsorbent |
| CN109607947A (en) * | 2018-12-25 | 2019-04-12 | 贵州省分析测试研究院 | A method of removing coal washery heavy metal in waste water arsenic |
| CN111196618B (en) * | 2020-03-16 | 2022-05-31 | 河北省科学院生物研究所 | Method for removing cobalt ions and/or antibiotics in wastewater |
| CN112776191B (en) * | 2021-02-01 | 2022-06-03 | 中兴惠和(山东)环保科技有限公司 | Stone cutting sewage treatment device and using method thereof |
| CN115849492A (en) * | 2022-11-22 | 2023-03-28 | 核工业北京化工冶金研究院 | Method for treating uranium-containing acidic wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948190A (en) * | 2006-11-07 | 2007-04-18 | 南京大学 | Treatment method of waste water in fluorofen production |
| CN1994916A (en) * | 2006-12-29 | 2007-07-11 | 上海师范大学 | Steel slag composition for removing divalent cadmium ion and its production method and uses |
| CN101716487A (en) * | 2009-12-31 | 2010-06-02 | 成都信息工程学院 | Steel slag composite adsorbing agent and method for processing printing and dyeing wastewater |
-
2012
- 2012-06-29 CN CN201210220254.5A patent/CN103508507B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948190A (en) * | 2006-11-07 | 2007-04-18 | 南京大学 | Treatment method of waste water in fluorofen production |
| CN1994916A (en) * | 2006-12-29 | 2007-07-11 | 上海师范大学 | Steel slag composition for removing divalent cadmium ion and its production method and uses |
| CN101716487A (en) * | 2009-12-31 | 2010-06-02 | 成都信息工程学院 | Steel slag composite adsorbing agent and method for processing printing and dyeing wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103508507A (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103508507B (en) | The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion | |
| CN103540765B (en) | Zinc smelting technology | |
| CN101318656B (en) | Metallurgy purification method for polysilicon | |
| CN111389363A (en) | Magnetic biochar adsorbing material based on sulfate-reduced sludge and preparation method and application thereof | |
| CN111925017B (en) | Method for treating high-arsenic contaminated acid by using zinc slag | |
| CN106111055B (en) | A kind of synchronous denitrification dephosphorizing adsorbent and its preparation method and application | |
| CN103588240A (en) | Green utilization method of waste acid | |
| Suiyi et al. | A novel clinoatacamite route to effectively separate Cu for recycling Ca/Zn/Mn from hazardous smelting waterwork sludge | |
| CN108947021A (en) | A kind of method of iron-based oxide Solid state fermentation waste acid | |
| CN108314086A (en) | The method for producing LITHIUM BATTERY high purity manganese sulfate as raw material using ferric manganese ore | |
| CN103182292B (en) | Novel Cr (VI) adsorbent and preparation method thereof | |
| CN101545037B (en) | Method for producing iron ore concentrate by using poor-tin oxidized ore tailings | |
| CN111925016B (en) | Method for treating high-arsenic waste acid by using honeycomb briquette slag | |
| CN104745495A (en) | Efficient desulfurizing bacreria and use method thereof in removal of sulfur in iron ore | |
| Li et al. | Progress in comprehensive utilization of electrolytic manganese residue: a review | |
| CN103693710A (en) | Preparation and oil-water separation method of humic acid modified fly ash magnetic material | |
| CN104925988A (en) | Deep treatment method for polluted wastewater containing heavy metal such as thallium and the like | |
| CN111252875A (en) | Treatment process of heavy metal-containing wastewater | |
| CN113562830B (en) | Preparation method of copper smelting waste acid arsenic precipitating agent | |
| CN110372041A (en) | A kind of method that titanium gypsum tailing prepares calcium ferrite | |
| CN105671311A (en) | Processing method of iron ore | |
| CN105327926B (en) | A kind of method that calcium iron dioxygen carrier is prepared by raw material of converter slag | |
| CN112028330A (en) | Method for treating arsenic-containing contaminated acid by taking fayalite as in-situ iron source | |
| CN101956069A (en) | Method for reducing and leaching manganese from pyrolusite in sulfuric acid solution by using sludge | |
| CN110669923A (en) | Method for removing arsenic by limonite and copper slag through adsorption |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20210629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |