CN101200320A - High-carbonaceous metallized pellet for treating waste water and preparation method - Google Patents
High-carbonaceous metallized pellet for treating waste water and preparation method Download PDFInfo
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- CN101200320A CN101200320A CNA2007101853088A CN200710185308A CN101200320A CN 101200320 A CN101200320 A CN 101200320A CN A2007101853088 A CNA2007101853088 A CN A2007101853088A CN 200710185308 A CN200710185308 A CN 200710185308A CN 101200320 A CN101200320 A CN 101200320A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 35
- 239000008188 pellet Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 99
- 229910052742 iron Inorganic materials 0.000 claims abstract description 43
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000009467 reduction Effects 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims abstract description 3
- 238000005453 pelletization Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010298 pulverizing process Methods 0.000 claims description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 239000003575 carbonaceous material Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 6
- 230000001603 reducing effect Effects 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 5
- 239000010903 husk Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000002802 bituminous coal Substances 0.000 claims description 3
- 235000011194 food seasoning agent Nutrition 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052799 carbon Inorganic materials 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005868 electrolysis reaction Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004065 wastewater treatment Methods 0.000 abstract description 6
- 238000005243 fluidization Methods 0.000 abstract description 4
- 238000002161 passivation Methods 0.000 abstract description 4
- 238000011109 contamination Methods 0.000 abstract description 2
- 238000011049 filling Methods 0.000 abstract description 2
- 238000005054 agglomeration Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 5
- 239000002957 persistent organic pollutant Substances 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 4
- 238000004939 coking Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000002894 chemical waste Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000005354 coacervation Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a preparation method of high carbon metalized pellet for waste water treatment, belonging to a technical field of metallurgical products, which is used to solve the problem that the surface passivation is easy to be generated in the material filtering in iron carbon by the method of electrolysis so as to affect waste water treatment effect. The invention is characterized in that: the high carbon metalized pellet contains single iron, activated carbon and few impurities, wherein the particle diameter of the single iron is less than 0.2mm, the activated carbon is a pore structure, the specific surface area reaches 500-800 square meter per gram. The method of the invention is composed of raw material preparation, pellet building, drying, reduction and other steps. Experiments evidence: the product in the invention has rich pore structures and huge specific surface, and has strong capability of absorbing contaminations in waste water, moreover the product has higher reaction activities, good osmosis, easy fluidization and no agglomeration. Compared with the conventional electrolysis process, the COD removal ratio of the used filling is improved by above 50 percent under equal time, the waste water with large variable concentration and wide PH value range can be treated.
Description
Technical field
The present invention relates to a kind of wastewater treatment filter tank filler and preparation method thereof, particularly high-carbonaceous metallized pellet and preparation method, belong to the metallurgical product technical field.
Background technology
In recent years, along with developing rapidly of industries such as printing and dyeing, chemical industry, medicine, papermaking, the quantity discharged of trade effluent increases day by day.Often contain the organic pollutant (as compounds such as nitro class, glue class, heterocyclic) of a large amount of difficult degradations and deleterious heavy metal ion in this type of trade effluent (as Cr
6+, Cu
2+, Ni
2+Deng), biodegradability is very poor, and toxicity is big, and ecotope has been constituted serious threat.At present, there is more supervirulent waste water to be not suitable for directly handling to biology with biological method, but adopt the pretreatment technology of physico-chemical processes such as flocculent precipitation, chemical precipitation method, neutralisation, oxidation reduction process earlier as this type of trade effluent, reduce the toxicity of waste water, and then adopt biological process further to deepen processing.Because traditional physical chemistry pretreatment process working cost is higher, thereby has hindered these technology applying in actual production.
Iron charcoal internal electrolysis is a kind of electrochemical method of administering waste water that grew up in the last few years.This method utilizes iron filings to form the filter tank as filtrate, and a series of electrochemistry takes place during by the filter tank waste water and physicochemical change makes the difficult degradation thing obtain handling.Its principle of work is in containing the aqueous solution of acidic electrolyte bath, forms numerous small galvanic cell between the carbon in iron and the iron filings.Be oxidized to Fe as anodic iron
2+, heavy metal and organic pollutant then can reduce on the carbon as negative electrode.
Anode: Fe → 2e → Fe
2+(under acid waste water or the aqueous solution suboxide reduction potential situation);
Fe → 3e → Fe
3+(under neutrality and alkaline waste water or the high redox potential situation);
Negative electrode: organic hardly degraded organic substance+ne → easily biodegradable organics.
The Fe that produces
2+Stronger reducing power is arranged, part difficult degradation ring-type organism ring crack is separated, generate the open loop organism of phase commute degraded.The Fe that produces
2+Become Fe after oxidized
3+, in pH value＞4.0 o'clock, form Fe (OH) with very strong throwing out
3, suspended solids, coacervation of colloid precipitation in the waste water can be adsorbed great amount of soluble organic pollutant coprecipitation simultaneously, waste water is further purified.
The major advantage of electrolysis process has in the above-mentioned conventional iron carbon: 1. iron filings wide material sources, and cost is low, and is easy and simple to handle; 2. device structure is simple, less investment, and working cost is low; 3. it is fast, effective to produce effects, and can improve the biodegradability of waste water effectively, helps subsequent disposal.But electrolysis process remains in some shortcomings in the iron carbon: 1. for the treatment effect instability of high density, organic wastewater with difficult degradation thereby; 2. move after for some time owing to the passivation of iron filings filling surface, become rusty into entity, water treatment effect obviously reduces.In order to solve iron filings surface passivation and rust joint problem, adopt the fluidized-bed mode to handle waste water.Blast air except that the required oxygen of reaction is provided, also play the effect on continuous flushing iron filings surface, the iron filings surface is brought in constant renewal in, be difficult for losing activity; Simultaneously, the air that blasts constantly is hit flocculation bed (filler), has both guaranteed gas-liquid-solid triphasic abundant contact, helps again preventing that iron filings from hardening.Yet because iron filings and carbon granules, coke and flyash proportion differ greatly (about 5～8 times), fluidization conditions is difficult to definite and control, and in addition, for guaranteeing fluidization, waste water needs constantly circulation, thereby power consumption is big, and the loss of iron carbon occurs.
(application number: 02111901.5), be to grow up on the basis of internal electrolysis, iron is as the anode of galvanic cell, and copper replaces carbon to become the negative electrode of galvanic cell for patent " method for the treatment of used water difficult to degradate by catalytic internal electrolysis of iron ".This method has widened two interpolar potential differences, helps improving the clearance of difficult degradation pollutent in the waste water.As everyone knows, costing an arm and a leg of copper will inevitably cause cost for wastewater treatment to improve.The contact area of copper turnings and iron filings is little in addition, and its interface resistance increases after copper or the iron surface oxidation, can reduce the transfer rate of electronics in the galvanic cell reaction process, thereby reduces the degradation rate of pollutent.
In sum, though existing each method has obtained certain progress, the problem of fail thoroughly the to solve passivation along with the prolongation in treatment time of iron filings surface, rust joint and decrease in efficiency aspect the electrolysis treatment waste water in solving iron carbon.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of active high, stability is strong, the high-carbonaceous metallized pellet and the preparation method that are used to handle waste water of excellent in efficiency.
The alleged problem of the present invention is solved by following technical scheme:
A kind of high-carbonaceous metallized pellet that is used to handle waste water, its special feature is: the formation of described pelletizing comprises fe, gac and small amount of impurities, and wherein the fe particle diameter is less than 0.2mm, and gac is a pore passage structure, and its specific surface area reaches 500～800m
2/ g.
Above-mentioned high-carbonaceous metallized pellet and the preparation method who is used to handle waste water, it is made up of following step:
A. raw material is mixed: choose carbonaceous material 20～50% according to weight percentage; Iron-bearing material 40～70%; Binding agent 10～40% is mixed evenly;
B. pulverize: above-mentioned raw materials is crushed to granularity less than 100 orders;
C. make ball: the raw material of pulverizing adds water and makes ball in balling disc, sphere diameter is controlled at 2～10mm;
D. dry: with above-mentioned pelletizing seasoning or to put into loft drier dry;
E. reduction: dried pelletizing is placed in the High Temperature Furnaces Heating Apparatus,,, promptly make high-carbonaceous metallized pellet after the cooling through reduction in 1.5～3 hours at 800～1300 ℃.
Above-mentioned high-carbonaceous metallized pellet and the preparation method who is used to handle waste water, described carbonaceous material is an one or more combination in the materials such as bituminous coal, hard coal, wood chip, husk, described iron-bearing material is an one or more combination in the materials such as fine iron breeze, rich ore powder, steel rolling iron scale, slag, and described binding agent is an one or more combination in the materials such as starch, wilkinite, clay.
Above-mentioned high-carbonaceous metallized pellet and the preparation method who is used to handle waste water, described reduction step carry out under reducing atmosphere, neutrality or weak oxide atmosphere.
Product of the present invention has following advantage as a kind of novel material of handling waste water in wastewater treatment:
1. owing to have abundant pore passage structure and huge specific surface, gac has very strong adsorptive power to pollutent in the waste water, iron powder in the high-carbonaceous metallized pellet has very high specific surface area equally, and has very high reactive behavior, effectively heavy metal ion and the organic pollutant in the reducing waste water; 2. iron powder and gac are evenly distributed, and point of contact is many and closely, iron in waste water-carbon is formed huge microbattery group, and in microelectrolysis process, the transfer transport resistance is little, efficient is high, thereby the speed of all contaminations in the degraded water body is also high; 3. because gac to the adsorption of pollutent, makes pollutent at the microbattery surface enrichment, accelerated rate of mass transfer; 4. in the galvanic cell reaction that iron-carbon is formed, pollutent is reduced and consumes at battery surface, helps reducing the concentration of pollutent at battery surface, makes gac remain the good adsorption ability; 5. because high-carbonaceous metallized pellet is a porous mass, volume density is little, has only 3.5～5.8g/cm
3, good penetrability, easily fluidisation does not harden; 6. after the iron of high-carbonaceous metallized pellet ran out of, residue and mud reclaimed through high temperature reduction regeneration back reusable, can not produce secondary pollution.Test shows, product of the present invention, and in the concrete application of wastewater treatment, the used filler of electrolysis process is improving more than 50% with COD clearance under the equal time in the comparable routine.After the processing of recalcitrant substance process high-carbon metallized pellet, the organic ring-type macromole key in the waste water is interrupted generates the easily straight chain shape small-molecule substance of degraded.The waste water that product of the present invention can also concentration of treatment changes greatly, pH value scope is wide.
Embodiment
Product of the present invention is that the activity of electrolysis process is high in a kind of being used for, stability is strong, the porous spherical filler of excellent in efficiency.Described product is made through pulverizing steps such as system ball, reduction by carbonaceous material, iron-bearing material and the binding agent of certain proportioning.Less demanding to iron-bearing material can be fine iron breeze, rich ore powder, steel rolling iron scale, slag etc., but require iron-bearing material to be easy to be become metallic iron by carbon reduction under 800～1300 ℃.Carbonaceous material can be chosen in the one or more combination from materials such as bituminous coal, hard coal, wood chip, husk, and binding agent is an one or more combination in the materials such as starch, wilkinite, clay.
In the high temperature reduction process, carbonaceous material is through the high temperature carbonization charing, and carbon at high temperature with ferrous material following chemical reaction takes place behind the system ball for above-mentioned raw materials:
3C+2Fe
2O
3→4Fe+3CO
2
The CO that reaction generates
2React with the carbon generating gasification again:
C+CO
2→2CO
The result of chemical reaction is reduced into fe with iron from its oxide compound, be to make charcoal obtain activation on the other hand, becomes to have abundant pore passage structure and huge specific surface area active carbon.
Prepared high-carbonaceous metallized pellet has following physico-chemical property: 1. main chemical compositions is: C, Fe and SiO
2, Al
2O
3Deng oxide compound; 2.C mainly exist with the gac form, have abundant pore passage structure and huge specific surface, active high; 3.Fe mainly exist with simple substance form, granularity is less than 0.2mm.Owing to be newly to reduce Fe, and granularity is little, thereby has very high reducing activity; 4. iron powder and gac are evenly distributed, and point of contact is many and tight.Above-mentioned physicochemical property has given this product good scrubbing effect.Provide the simultaneous test data of filler treatment of Coking Wastewater such as product of the present invention and sponge iron, iron filings, cast iron filing in the table 1.(coking chemical waste water is the reluctant waste water that produces in the process of coking, be characterized in complicated component, toxicity is big, concentration is high, wherein organism is based on phenolic compound, account for half of organic pollutant, also comprise heterogeneous ring compound of polycyclc aromatic compound and nitrogenous, oxygen etc. in the organism, inorganic pollutant is based on prussiate, sulfide, thiocyanide.)
Table 1 treatment of Coking Wastewater effect comparison table
Below provide several specific embodiments of preparation method of the present invention:
Embodiment 1:
Take by weighing raw material according to weight percentage: fine iron breeze 60%, coal dust 30%, wilkinite 10%; Each raw material is ground into granularity 100 order powderies after being mixed evenly; The raw material of pulverizing is added water make ball in balling disc, the diameter of ball is controlled at 2～10mm; It is dry that pelletizing is put into loft drier; Dried pelletizing carries out reductase 12 hour, naturally cooling under 1050 ℃.
Embodiment 2:
Take by weighing raw material according to weight percentage: fine iron breeze, rich ore powder totally 40%, coal dust, wood chip totally 50%, starch and clay totally 10%; Each raw material is ground into granularity 100 order powderies after being mixed evenly; The raw material of pulverizing is added water make ball in balling disc, the diameter of ball is controlled at 2～10mm; The pelletizing seasoning; Dried pelletizing reduced under 1200 ℃ 1.5 hours, naturally cooling.
Embodiment 3:
Take by weighing raw material according to weight percentage: steel rolling iron scale 70%, hard coal, husk totally 20%, wilkinite, starch totally 10%; Each raw material is ground into granularity 100 order powderies after being mixed evenly; The raw material of pulverizing is added water make ball in balling disc, the diameter of ball is controlled at 2～10mm; It is dry that pelletizing is put into loft drier; Dried pelletizing reduced under 800 ℃ 3 hours, naturally cooling.
Embodiment 4:
Take by weighing raw material according to weight percentage: rich ore powder, slag totally 40%, coal dust, wood chip, husk totally 20%, wilkinite and clay totally 40%; Each raw material is ground into granularity 100 order powderies after being mixed evenly; The raw material of pulverizing is added water make ball in balling disc, the diameter of ball is controlled at 2～10mm; It is dry that pelletizing is put into loft drier; Dried pelletizing carries out reductase 12 hour, naturally cooling under 1000 ℃.
Embodiment 5:
Take by weighing raw material according to weight percentage: fine iron breeze 50%, coal dust 20%, starch and wilkinite totally 30%; Each raw material is ground into granularity 100 order powderies after being mixed evenly; The raw material of pulverizing is added water make ball in balling disc, the diameter of ball is controlled at 2～10mm; It is dry that pelletizing is put into loft drier; Dried pelletizing carried out under 900 ℃ reductase 12 .5 hour, naturally cooling.
Claims (4)
1. high-carbonaceous metallized pellet that is used to handle waste water, it is characterized in that: the formation of described pelletizing comprises fe, gac and small amount of impurities, and wherein the fe particle diameter is less than 0.2mm, and gac is a pore passage structure, and its specific surface area is 500～800m
2/ g.
2. high-carbonaceous metallized pellet and the preparation method who is used to handle waste water according to claim 1 is characterized in that it is made up of following step:
A. raw material is mixed: choose carbonaceous material 20～50% according to weight percentage; Iron-bearing material 40～70%; Binding agent 10～40% is mixed evenly;
B. pulverize: above-mentioned raw materials is crushed to granularity less than 100 orders;
C. make ball: the raw material of pulverizing adds water and makes ball in balling disc, sphere diameter is controlled at 2～10mm;
D. dry: with above-mentioned pelletizing seasoning or to put into loft drier dry;
E. reduction: dried pelletizing is placed in the High Temperature Furnaces Heating Apparatus,,, promptly make high-carbonaceous metallized pellet after the cooling through reduction in 1.5～3 hours at 800～1300 ℃.
3. high-carbonaceous metallized pellet and the preparation method who is used to handle waste water according to claim 2, it is characterized in that, described carbonaceous material is an one or more combination in the materials such as bituminous coal, hard coal, wood chip, husk, described iron-bearing material is that a kind of or youngster plants combination in the materials such as fine iron breeze, rich ore powder, steel rolling iron scale, slag, and described binding agent is an one or more combination in the materials such as starch, wilkinite, clay.
4. according to claim 2 or 3 described high-carbonaceous metallized pellet and the preparation methods that are used to handle waste water, it is characterized in that described reduction step is to carry out under reducing atmosphere, neutrality or weak oxide atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101853088A CN100540477C (en) | 2007-11-28 | 2007-11-28 | A kind of high-carbonaceous metallized pellet and preparation method who is used to handle waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101853088A CN100540477C (en) | 2007-11-28 | 2007-11-28 | A kind of high-carbonaceous metallized pellet and preparation method who is used to handle waste water |
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| Publication Number | Publication Date |
|---|---|
| CN101200320A true CN101200320A (en) | 2008-06-18 |
| CN100540477C CN100540477C (en) | 2009-09-16 |
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| CN101920192A (en) * | 2010-08-06 | 2010-12-22 | 清华大学 | Preparation method of metal carbon material capable of absorbing and reducing refractory pollutants |
| CN102120652A (en) * | 2011-01-30 | 2011-07-13 | 绍兴明透装甲材料有限责任公司 | Coal-based adsorption sewage treatment method and adsorption system |
| CN102277461A (en) * | 2011-08-17 | 2011-12-14 | 北京科技大学 | Method for directly restoring industrial waste residue through rotary hearth furnace |
| CN102774952A (en) * | 2012-07-27 | 2012-11-14 | 黑龙江建龙钢铁有限公司 | Method for treating coking wastewater |
| CN101723488B (en) * | 2009-12-21 | 2013-01-16 | 昆明理工大学 | Novel water-treatment medicament based on internal electrolysis principle and preparation method thereof |
| 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 |
| CN103351032A (en) * | 2013-06-09 | 2013-10-16 | 叶文淡 | Method for producing water treatment agent by using iron oxide scraps |
| CN103962136A (en) * | 2014-04-29 | 2014-08-06 | 湖北荆楚理工化工医药研究设计有限公司 | Catalyst for chemical wastewater oxidation treatment and application method of catalyst |
| CN104261549A (en) * | 2014-10-20 | 2015-01-07 | 潍坊华强特种材料科技有限公司 | Sponge iron purifier and preparation method and application thereof |
| CN105084470A (en) * | 2014-05-09 | 2015-11-25 | 广州桑尼环保科技有限公司 | Spherical catalytic microelectrolytic environment-friendly material and preparation method therefor |
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