CN107840415A - A kind of method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement - Google Patents
A kind of method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement Download PDFInfo
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- CN107840415A CN107840415A CN201610832859.8A CN201610832859A CN107840415A CN 107840415 A CN107840415 A CN 107840415A CN 201610832859 A CN201610832859 A CN 201610832859A CN 107840415 A CN107840415 A CN 107840415A
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- iron
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- electrolysis filler
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Abstract
The invention belongs to environmental friendly material technical field, and in particular to a kind of method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement.Ferrous waste acid will be neutralized first or iron content waste water obtains the moisture in iron cement and controlled in 20~70wt%, add the carbon source that mass fraction is 5~20% and the binding agent that mass fraction is 0~3%, after well mixed, pelletizing is pressed into pelletizer, free water and the crystallization water are removed into dryer, calcining deoxidation is carried out subsequently into inert atmosphere calcining furnace or reducing atmosphere stove, obtains porous iron-carbon micro-electrolysis filler.This method can make the pickling iron cement originally as solid waste obtain 100% utilization, and because carbon monoxide and carbon dioxide caused by iron oxide and carbon dust reaction can play a part of pore-creating, obtained iron-carbon micro-electrolysis filler hole is abundant uniformly, specific surface area is big, there is water-based good, active high, good waste water treatment effect, and economize on resources, cost it is low, application prospect is very wide.
Description
Technical field
The invention belongs to environmental friendly material technical field, and in particular to one kind prepares iron-carbon micro-electrolysis using pickling iron cement and filled out
The method of material.
Background technology
Steel product usually requires to be cleaned with strong acid in process, to remove the oxide skin of workpiece surface.When
After iron ion in acid solution reaches finite concentration, its burn into cleaning performance can be caused to be remarkably decreased and turn into spent acid.Acid-washing waste acid
The iron ion higher with concentration is usually contained in flushing waste water and inorganic acid (such as hydrochloric acid, sulfuric acid, nitration mixture), have very strong
Acid and corrosivity, has been put into《National Hazard waste register》.Ferrous waste acid and for example untreated directly discharge of flushing waste water,
The wasting of resources is not only caused, can also produce serious harm to environment.
Counted according to part, steel industry annual acid-washing waste acid yield in China's is not less than 10,000,000 tons, and this does not include also
The flushing waste water that concentration is relatively low but yield is bigger.Acid-washing waste acid and the most important processing method of flushing waste water neutralize for alkali, this
It will not be changed within the following some time.Necessarily lead to the solid of substantial amounts after so many iron content waste water neutralisation treatment
Waste, disposing these solid waste not only needs to consume the substantial amounts of energy, takes large stretch of soil, it is also necessary to spends high expense
With bringing white elephant to government department and enterprise, had a strong impact on the transition and development of steel industry.
For from composition, the composition of most acid-washing waste acids is very single, is only made up of molysite, strong acid and water, and it is passed through
Cross that the main component for the iron cement that neutralisation treatment obtains is also fairly simple, there is higher value.Seek rationally effective side
Method, recycling is carried out to pickling iron cement, there is important impetus to forming steel industry new growth engines, it is right
National resources saving and the strategy of sustainable development are also significant.
Iron-carbon micro-electrolysis technology is a kind of ideal technology for handling organic wastewater with difficult degradation thereby, and its principle is using iron and carbon
Grain is used as filler, and when filler is immersed in the water, due to potential difference between iron carbon be present, countless trickle original electricity can be formed in filler
Pool structure, using iron as negative pole, carbon is positive pole for it, and in electrode surface redox occurs for the pollutant in waste water in acid condition
Reaction, make macromolecular that chain-scission degradation occur, it is final to decompose and remove.The technique is particularly suitable for use in high saliferous, high chroma, difficult biochemical
The high concentrated organic wastewater processing of degraded, and heavy metal ion has preferably reduction and coagulation removal effect, has technique
Flow is simple, and reaction speed is fast, water quality strong adaptability, convenient operating maintenance, and the advantages such as power consumption is low, in recent years by wide
General concern.
Core of the iron-carbon micro-electrolysis filler as micro electrolysis tech, it can be gradually used up in use, it is therefore desirable to
Periodic replacement.As country is to the requirement more and more higher of environmental protection, iron carbon filler as a kind of environment-friendly materials being widely used, its
Demand is necessarily significantly increased, and market prospects are huge.Iron carbon filler mainly uses iron filings or iron powder to be produced for source of iron at present,
The problems such as cost is higher, iron resource consumption is big be present.If can using steel industry largely caused pickling iron cement as source of iron,
Solidification disposal of waste pressure can then be alleviated, substantially reduce production cost, improve product competitiveness, while substantial amounts of iron ore money can be saved
Source, be advantageous to social sustainable development.
The content of the invention
It is an object of the invention to provide a kind of method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, consolidated with iron content
Give up and prepare new and effective iron-carbon micro-electrolysis filler for raw material, for field of waste water treatment, the mesh for realize the treatment of wastes with processes of wastes against one another, economizing on resources
's.
The technical scheme is that：
A kind of method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, using in ferrous waste acid or iron content waste water and locating
Pickling iron cement caused by reason and carbon source are primary raw material, and porous iron-carbon micro-electrolysis filler is prepared by redox reaction.
The described method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, pickling iron cement are derived from based on steel
Steel Wire Products Industry, its main component is iron oxide and water, simultaneously containing a small amount of inorganic salts；By weight percentage, iron
Oxygen compound content is 20~80%, and for water content 20~70%, inorganic salt content is no more than 10%.
The described method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, iron oxide are the oxide or iron of iron
Hydroxide, water is free water or the crystallization water, and inorganic salts are sodium chloride, calcium chloride or sodium sulphate；By weight percentage, iron
Oxygen compound content is 30~70%, and for water content 30~60%, inorganic salt content is no more than 10%.
The described method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, carbon dust or graphite powder conduct from excess
The carbon source of iron oxide is reduced, carbon source dosage exceedes the single grain of redox reaction stoichiometric proportion, carbon dust or graphite powder
Footpath is 0.2~200 μm, and the single particle diameter of iron oxide is 0.01~100 μm；The remaining carbon dust of redox reaction is directly embedding
Enter in filler, the positive electrode as iron carbon galvanic cell；The obtained fe being located in filler is reduced, it is former directly as iron carbon
The negative material of battery.
The single particle diameter of the described method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, carbon dust or graphite powder is 10
~50 μm, the single particle diameter of iron oxide is 0.1~20 μm.
The described method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, the concrete technology step and technique of this method
Parameter is as follows：
(1) the pickling iron cement after separation of solid and liquid is subjected to homogeneity of water, total moisture content is controlled in 20~70wt%；
(2) carbon source is uniformly mixed with binding agent and pickling iron cement using mixing apparatus, the control of the mass fraction of carbon 5~
20%, for the control of the mass fraction of binding agent 0~3%, binding agent is at least one of clay, attapulgite, bentonite；
(3) pickling iron cement and carbon source, the homogeneous mixture of binding agent are pressed into a diameter of 5~60mm's using pelletizer
Pelletizing or flat pelletizing, and enter drying plant carry out dewater treatment, dehydration temperaturre be 100~300 DEG C, dewatering time be 15~
120min, obvious oxidation does not occur and is advisable up to more than 90% and carbon source with hydroxide resolution ratio；
(4) pelletizing by drying and being dehydrated or flat pelletizing are sent into inert atmosphere calcining furnace or reducing atmosphere stove,
20~180min is calcined at 700~1500 DEG C, is then cooled to room temperature in inert atmosphere or reducing atmosphere, is obtained described
Iron-carbon micro-electrolysis filler.
The described method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, in step (1), total moisture content is controlled 30
~60wt%；In step (2), 10~15%, the mass fraction of binding agent controls 1~2% the control of the mass fraction of carbon；Step
Suddenly in (3), homogeneous mixture is 10~40mm of diameter pelletizing or flat pelletizing, and dehydration temperaturre is 150~200 DEG C, during dehydration
Between be 30~60min；In step (4), inert atmosphere is nitrogen or argon gas atmosphere, and reducing atmosphere is carbon monoxide or hydrogen gas
Atmosphere, 30~60min is calcined at 800~1000 DEG C.
The described method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, the porosity of iron-carbon micro-electrolysis filler be not low
In 30%, 3~50m of specific surface area2/g。
The design principle of the present invention is as follows：
The oxide of iron at high temperature can be with carbon or reducibility gas (such as：Carbon monoxide, hydrogen) occur redox it is anti-
Should, generate fe and gas (such as：Carbon monoxide, carbon dioxide, water vapour etc.).
Its chemical equation is：
2FexOy+y C→2x Fe+y CO2↑
FexOy+y CO→x Fe+y CO2↑
FexOy+y H2→x Fe+y H2O↑
Main component is uniformly mixed for the pickling iron cement of iron oxide with carbon dust or graphite powder and is pressed into pelletizing, is taken off
Calcined after water in inert atmosphere or reducing atmosphere high temperature, carry out above-mentioned reaction, final product is fe and volatility gas
Body.Fe and remaining toner or graphite powder close-coupled, form iron-carbon micro-electrolysis filler of the present invention.In preparation process
In, the removing of moisture and the generation of oxycarbide and spilling, be advantageous to form abundant and uniform hole in filler, obtain
Iron-carbon micro-electrolysis filler has the characteristics that specific surface area is big, excessively water-based good, active high, therefore good waste water treatment effect, and material
Utilization rate is high.
Advantages of the present invention and have the beneficial effect that：
1st, the present invention can make it avoid entering as solid waste direct 100% using pickling iron cement caused by steel product industry
Row processing, can not only save huge solidification disposal of waste expense, and save the resource of preciousness, to promoting industry lifting, improve
Product competitiveness is significant.
2nd, the iron-carbon micro-electrolysis filler hole prepared using the present invention is abundant and uniform, and specific surface area is big, and activity is high, crosses water
Property good, high treating effect during for handling heavy metal-containing waste water and difficult degradation COD waste water, stock utilization is high.
When the 3rd, preparing iron-carbon micro-electrolysis filler using the present invention, oxidation-reduction process releases substantial amounts of heat so that equipment
Energy consumption can control in the reasonable scope.
4th, the present invention is with wide material sources, or even pile up like a mountain, and the solid waste of disposal costs costliness is raw material, production tool
There is the good Novel environment-friendlymaterial material of high added value, market prospects, there is the advantages such as cost is low, product competitiveness is strong.
Embodiment
In specific implementation process, the present invention is produced using steel product industry acid-washing waste acid and flushing waste water neutralisation treatment
Iron content give up mud be source of iron, carbon dust or graphite powder are carbon source, by pelletizing, dehydration, atmosphere calcining etc. technique prepare it is porous
Iron-carbon micro-electrolysis filler, detailed process are as follows：Ferrous waste acid will be neutralized first or iron content waste water obtains the moisture in iron cement
Control is equal in 20~70wt%, the binding agent that the carbon source and mass fraction that addition mass fraction is 5~20% are 0~3%, mixing
After even, pelletizing is pressed into pelletizer, free water and the crystallization water are removed into dryer, subsequently into inert atmosphere calcining furnace or also
Former atmosphere furnace carries out calcining deoxidation, obtains porous iron-carbon micro-electrolysis filler, and obtained iron-carbon micro-electrolysis filler hole is abundant equal
Even (porosity is not less than 30%, preferably 30~60%), big (3~50m of specific surface area2/ g), it is water-based good, active to have
It is high, cost is low, the advantages that economizing on resources, high suitable for heavy metal containing wastewater treatment and difficult degradation COD wastewater treatments, treatment effeciency.
This method can make the pickling iron cement originally as solid waste obtain 100% utilization, and due to iron oxide (such as：FeO、Fe2O3、
Fe3O4、Fe(OH)2、Fe(OH)3Deng one or more) with carbon source reaction caused by carbon monoxide and carbon dioxide
Pore-creating can be played a part of, obtained iron-carbon micro-electrolysis filler hole is abundant uniformly, specific surface area is big, had it is water-based it is good,
The advantages that active high, good waste water treatment effect, and economize on resources, cost it is low, application prospect is very wide.
The present invention is described in further detail with reference to embodiment.
Embodiment 1
Iron ion content is 65g/L in certain accurate wire works' pickling waste hydrochloric acid, and iron ion content is 4.5g/L in flushing water,
After carrying out neutralisation treatment with liquid caustic soda, separation of solid and liquid is carried out by diaphragm filter press, obtains water content as 61wt%, iron oxide
The iron cement that content is 38wt%, sodium chloride content is 1wt%.
The carbon dust that the above-mentioned iron cements of 9kg and 1kg particle mean sizes are 30 μm is mixed, and adds 120g clays as binding agent,
After homogenization the flat pelletizing that size diameter is 15mm, thickness is 10mm is pressed into experiment pelletizer；Pelletizing is sent into drying box
60min is dehydrated in 160 DEG C, moisture content is reduced within 5wt%；Dried pelletizing is entered in argon gas atmosphere stove, in 950 DEG C
90min is calcined, furnace cooling, obtains iron-carbon micro-electrolysis filler.The iron-carbon micro-electrolysis filler density is 1.1g/cm3, porosity is
35%, simple substance iron content is 70wt%, and carbon content 28wt%, numbering is iron carbon filler I.
Embodiment 2
Iron ion content is 215g/L in certain steel tube factory's pickling waste hydrochloric acid, and iron ion content is 9.7g/L in flushing water, is used
After liquid caustic soda carries out neutralisation treatment, separation of solid and liquid is carried out by diaphragm filter press, obtains water content as 55.4wt%, iron oxide
The iron cement that content is 43wt%, sodium chloride content is 1.6wt%.
The above-mentioned iron cements of 8.5kg are mixed with the carbon dust that 1.5kg particle mean sizes are 50 μm, and add 150g sodium bentonites work
For binding agent, it is 15mm to be pressed into size diameter with experiment pelletizer after homogenization, and thickness is 10mm flat pelletizing；Pelletizing is sent
Enter drying box and be dehydrated 60min in 180 DEG C, moisture content is reduced within 5wt%；Dried pelletizing enters argon gas atmosphere stove
In, 120min is calcined in 900 DEG C, furnace cooling, obtains iron-carbon micro-electrolysis filler.The iron-carbon micro-electrolysis filler density is 0.95g/
cm3, porosity 41%, simple substance iron content is 62wt%, and carbon content 35wt%, numbering is iron carbon filler II.
Embodiment 3
Flushing waste water using the iron carbon filler I obtained by Examples 1 and 2 and iron carbon filler II to certain Electroplate Factory's coppered wire
Handled.
Coppered wire flushing waste water pH value is 8.4, and total copper content is 27.8mg/L, and pH value is adjusted into 3 with watery hydrochloric acid, standby.
By II each 1kg of iron carbon filler I and iron carbon filler, it is respectively placed in putamina of the identical bottom equipped with aerator, is formed and fixed
Bed structure, the cupric flushing waste water for mixing up pH value is set to pass through iron carbon filler fixed bed with the flow velocity of 10L/ hours with peristaltic pump, together
When air is exposed into device, go out water sampling and detect total copper content.Testing result shows, by iron carbon filler I and iron carbon filler II
After the fixed bed processing of composition, total copper content in waste water is respectively 0.13mg/L and 0.22mg/L, and clearance is respectively
99.5wt% and 99.2wt%, reaches first discharge standard.
Embodiment 4
Wire drawing waste emulsified mixture is handled using the iron carbon filler I obtained by Examples 1 and 2 and iron carbon filler II, and
Contrasted with commercially available iron carbon filler III.
The pH value of wire drawing waste emulsified mixture is 8.2, COD 60000mg/L.Addition demulsifier is carried out at demulsification to waste emulsified mixture
Reason, it is the demulsification clear liquid that 2, COD is 7000mg/L to obtain pH value, standby.With iron carbon filler I, iron carbon filler II and iron carbon filler
III each 2kg, it is respectively placed in three identicals, equipped with 2L demulsifications clear liquid, container of the bottom equipped with aerator, be aerated micro-
Electrolysis is handled.After being aerated 60min, water sampling adjusts pH value to determine COD value, iron carbon filler I, iron carbon filler II and iron carbon are filled out to 8.5
The COD of water sample is respectively 5730mg/L, 5612mg/L and 6110mg/L corresponding to material III；After being aerated 120min, iron carbon filler I,
COD corresponding to iron carbon filler II and iron carbon filler III is respectively 5180mg/L, 4904mg/L and 5722mg/L, it will thus be seen that
Iron-carbon micro-electrolysis filler prepared by embodiment 1,2 has removes COD performances higher than commercially available prod.
Embodiment result shows, the present invention with pickling iron cement in steel industry and caused by acid-washing waste acid and flushing waste water and
Carbon dust is primary raw material, is aided with a small amount of binding agent, by techniques such as homogenization, pelletizing, dehydration, atmosphere calcinings, can be made into
Divide controllable, high-specific surface area, the porous iron-carbon micro-electrolysis filler of high pore volume.By iron-carbon micro-electrolysis filler produced by the present invention in difficulty
Show to remove COD performances higher than commercially available prod in degraded COD wastewater treatments.At the same time, the iron carbon obtained by the present invention is micro-
Electrolysis filler can effectively remove the copper ion in coppered wire flushing waste water, and total copper removal rate reaches more than 99%.In summary,
The present invention can be to needing the pickling iron cement as solidification disposal of waste effectively to be utilized originally, and obtained product has in water treatment field
There are good using effect and application prospect.
Claims (8)
- A kind of 1. method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement, it is characterised in that using ferrous waste acid or iron content Pickling iron cement caused by waste water neutralisation treatment and carbon source are primary raw material, and it is micro- to prepare porous iron carbon by redox reaction Electrolysis filler.
- 2. according to the method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement described in claim 1, it is characterised in that pickling Iron cement is from the Steel Wire Products Industry based on steel, and its main component is iron oxide and water, simultaneously containing a small amount of nothing Machine salt；By weight percentage, iron oxide content is 20~80%, and 20~70%, inorganic salt content does not surpass water content Cross 10%.
- 3. according to the method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement described in claim 2, it is characterised in that iron oxygen Compound is the oxide of iron or the hydroxide of iron, and water is free water or the crystallization water, and inorganic salts are sodium chloride, calcium chloride or sulphur Sour sodium；By weight percentage, iron oxide content is 30~70%, and 30~60%, inorganic salt content does not surpass water content Cross 10%.
- 4. according to the method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement described in claim 1, it is characterised in that select Carbon source of the excessive carbon dust or graphite powder as reduction iron oxide, carbon source dosage exceed redox reaction stoichiometry Than the single particle diameter of carbon dust or graphite powder is 0.2~200 μm, and the single particle diameter of iron oxide is 0.01~100 μm；Oxidation The remaining carbon dust of reduction reaction is directly embedded into filler, the positive electrode as iron carbon galvanic cell；What reduction obtained is located at filler In fe, directly as the negative material of iron carbon galvanic cell.
- 5. according to the method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement described in claim 4, it is characterised in that carbon dust Or the single particle diameter of graphite powder is 10~50 μm, the single particle diameter of iron oxide is 0.1~20 μm.
- 6. according to the method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement described in one of Claims 1 to 5, its feature exists In the concrete technology step and technological parameter of this method are as follows：(1) the pickling iron cement after separation of solid and liquid is subjected to homogeneity of water, total moisture content is controlled in 20~70wt%；(2) carbon source is uniformly mixed with binding agent and pickling iron cement using mixing apparatus, the control of the mass fraction of carbon 5~ 20%, for the control of the mass fraction of binding agent 0~3%, binding agent is at least one of clay, attapulgite, bentonite；(3) pickling iron cement and carbon source, the homogeneous mixture of binding agent are pressed into a diameter of 5~60mm pelletizing using pelletizer Or flat pelletizing, and enter drying plant carry out dewater treatment, dehydration temperaturre be 100~300 DEG C, dewatering time be 15~ 120min, obvious oxidation does not occur and is advisable up to more than 90% and carbon source with hydroxide resolution ratio；(4) pelletizing by drying and being dehydrated or flat pelletizing are sent into inert atmosphere calcining furnace or reducing atmosphere stove, 700 20~180min is calcined at~1500 DEG C, is then cooled to room temperature in inert atmosphere or reducing atmosphere, obtains described iron Carbon micro-electrolysis filler.
- 7. according to the method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement described in claim 6, it is characterised in that step (1) in, total moisture content is controlled in 30~60wt%；In step (2), the control of the mass fraction of carbon 10~15%, binding agent Mass fraction is controlled 1~2%；In step (3), homogeneous mixture is 10~40mm of diameter pelletizing or flat pelletizing, is dehydrated Temperature is 150~200 DEG C, and dewatering time is 30~60min；In step (4), inert atmosphere is nitrogen or argon gas atmosphere, is reduced Property atmosphere be carbon monoxide or hydrogen atmosphere, at 800~1000 DEG C calcine 30~60min.
- 8. according to the method that iron-carbon micro-electrolysis filler is prepared using pickling iron cement described in Claims 1 to 4, it is characterised in that The porosity of iron-carbon micro-electrolysis filler is not less than 30%, 3~50m of specific surface area2/g。
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| CN109851002A (en) * | 2019-02-12 | 2019-06-07 | 陕西煤业化工技术研究院有限责任公司 | A kind of micro-electrolysis stuffing and its preparation method and application for realizing iron cement recycling |
| CN109912042A (en) * | 2018-12-06 | 2019-06-21 | 南方创业（天津）科技发展有限公司 | A kind of preparation method for moving-bed biofilm reaction modifying floating stuffing |
| CN111517421A (en) * | 2020-04-23 | 2020-08-11 | 南京大学 | Method for improving iron-carbon micro-electrolysis reaction efficiency by using iron-containing waste acid liquor wastewater |
| CN112960726A (en) * | 2021-03-17 | 2021-06-15 | 安徽工业大学 | Iron-carbon composite material and preparation method and application thereof |
| CN113104939A (en) * | 2021-04-15 | 2021-07-13 | 北京科技大学 | Method for preparing micro-electrolysis active coke filler by using metallurgical dust and mud |
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| CN102303915A (en) * | 2011-05-27 | 2012-01-04 | 杨祺 | Method for preparing microelectrolysis filler by using various industrial solid wastes |
| CN103253741A (en) * | 2013-05-10 | 2013-08-21 | 山东大学 | Method for preparing anti-hardening granular ceramic iron-carbon micro-electrolysis filler from industrial wastes |
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| CN101817574A (en) * | 2010-04-16 | 2010-09-01 | 吉林大学 | Regular iron-carbon micro-electrolysis filler and preparation method thereof |
| CN102303915A (en) * | 2011-05-27 | 2012-01-04 | 杨祺 | Method for preparing microelectrolysis filler by using various industrial solid wastes |
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| CN109912042A (en) * | 2018-12-06 | 2019-06-21 | 南方创业（天津）科技发展有限公司 | A kind of preparation method for moving-bed biofilm reaction modifying floating stuffing |
| CN109851002A (en) * | 2019-02-12 | 2019-06-07 | 陕西煤业化工技术研究院有限责任公司 | A kind of micro-electrolysis stuffing and its preparation method and application for realizing iron cement recycling |
| CN111517421A (en) * | 2020-04-23 | 2020-08-11 | 南京大学 | Method for improving iron-carbon micro-electrolysis reaction efficiency by using iron-containing waste acid liquor wastewater |
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| CN113104939A (en) * | 2021-04-15 | 2021-07-13 | 北京科技大学 | Method for preparing micro-electrolysis active coke filler by using metallurgical dust and mud |
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Application publication date: 20180327 |