CN103351032B - Method for producing water treatment agent by using iron oxide scraps - Google Patents
Method for producing water treatment agent by using iron oxide scraps Download PDFInfo
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- CN103351032B CN103351032B CN201310233397.4A CN201310233397A CN103351032B CN 103351032 B CN103351032 B CN 103351032B CN 201310233397 A CN201310233397 A CN 201310233397A CN 103351032 B CN103351032 B CN 103351032B
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Abstract
The invention relates to the technical field of waste iron oxide scrap treatment processes, and specifically relates to a method for producing a water treatment agent by using iron oxide scraps. The method is characterized in that iron oxide scraps are subjected to a high-temperature anaerobic reduction method, such that the iron oxide scraps which are deactivated are reduced into an active material which is sensitive to a water medium; the material is grinded, and materials comprising but not limited to a dispersing agent, an antioxidant, active carbon, and water are added, such that the water treatment agent is prepared. Compared with prior art, with the method provided by the invention, a heavy metal removal problem which cannot be solved with a common treatment method is solved; a waste material iron oxide scraps which is the most cheap and which is the most easy to collect are re-utilized, such that material cost is greatly reduced; and the water quality after treatment is better than that treated with a traditional treatment method.
Description
[technical field]
Patent of the present invention relates to discarded hammer scale treatment process technical field, specifically a kind of method of utilizing hammer scale to produce water conditioner.
[background technology]
Hammer scale refers to the iron scale producing in suitability for industrialized production.Particularly smeltery, forge part factory.The iron scale that all can produce 0.1%-0.8% in high temperature process process, the utilization of this iron scale had both been conducive to environment protection, good and cheap again, also can promote the well-being of mankind.Along with the industrialization in the whole world in recent years develops rapidly, various waste water has polluted our home, environment and soil, has polluted the earth that we depend on for existence.During our water pollutes, especially the pollution of heavy metal water is even more serious.Heavy metal content in water also rises to several thousand milligrams by several milligrams.And traditional method is difficult to process up to standard, and cost is high.So social needs should low cost have again efficient water conditioner to compel at the tip of the brow.
After heavy metal water pollutes, the unmanageable major cause of water is that each heavy metal species can not be by conventional dose decomposition and destruction, and can only be transformed into form, that is to say along with the change of their position is also present in object in the same old way, final serious harm the even life of health of human body, this is also cancer important source of pollution occurred frequently in recent years.
The water treatment that common metal is polluted is electrolytic process, the precipitator method, biochemical process and ion exchange method.But they are long the ubiquity cycle, the shortcoming of complicated operation and secondary pollution.And operation cost height is also the bottleneck of large-area applications.The present invention can overcome and make up above number of drawbacks, and especially operation cost is low, and water quality after treatment is more better than traditional treatment method.
[summary of the invention]
Object of the present invention will solve the inaccessiable heavy metal of conventional processing method institute and remove problem, utilize and in society, the most easily collected also the most cheap waste product and utilize the material oxidation iron filings to recycle, greatly reduce material cost, and reduced the operation cost of other products of the same type.
For achieving the above object, design a kind of method of utilizing hammer scale to produce water conditioner, it is characterized in that hammer scale through high temperature anaerobic reduction method, original deactivated hammer scale is reduced to the active material to water medium sensitivity, after grinding, add and include but not limited to dispersion agent, antioxidant, gac, water, make water conditioner.
Described concrete grammar step is as follows:
(1), will after hammer scale impurity elimination, pack in can, cover sealing cover and seal up again refractory mortar;
(2), treat that the temperature of stoving oven reaches 50-60 degree Celsius, the can of sealing is neatly stacked in stoving oven, between every line-spacing, must reserve space more than 20cm, be beneficial to flame and temperature evenly;
(3), etc. when stoving oven temperature rise to 720 degree Celsius, keep thermostatic control 180 minutes, the naturally cooling of then cutting off the electricity supply, while reaching requirement, box is got in blow-on;
(4) by after iron filings screening in can, use general milling machine through grinding and screening, the work in-process dry powder reaching after requirement fineness packs for subsequent use;
(5) with the work in-process dry powder iron filings of processing after levigate, add and include but not limited to dispersion agent, antioxidant, gac, water, then pass through thick, thin two sections of polishings, make water conditioner.
Described step (1), step (2) and step (3) can replace with step: the reduced iron powder of directly selecting steel mill.
Dry powder after grinding in the work in-process of coming out of the stove in described step (3) and step (4) is avoided contacting with water air depositing in process.
The diameter of described step (4) ball mills than with the diameter of terminal material particles than being 1000:1, through multistage barreling with screening after all materials are all by 800 eye mesh screens, just become the work in-process dry powder of water conditioner.
In described step (5), work in-process dry powder is inserted in agitation vat container and stirred, must first discharge water and put afterwards powder, when putting powder, apply sieve pacify be sieved into slowly, after material evenly mixes with water, then add while stirring dispersion agent, account for the 1%-1.5% of gross weight, antioxidant accounts for the 0.5%-0.8% of total amount, gac accounts for the 3%-3.5% of total amount, and various additives should progressively add successively, can not disposable mixing add.
In described whipping process, stirrer is selected interlayer water cooling, stainless steel, temperature of cooling water is answered <20 degree Celsius, avoid built-in temperature to raise, prevent that material from condensing, after stirring, mixture is inputted in wet grinding machine and processed by pulse pump.
In described step (5), thick, thin two sections of polishings are: the ball radius in corase grind stage should match with material diameter with net footpath, supporting unreasonable meeting produces latch up phenomenon, the hardness of abrading-ball is answered >8 shore A, after processing, in the time that fineness reaches 20 microns, wait for second segment fine grinding after packing container into; Carrying out before fine grinding, ball in grinding machine and net are changed to corresponding fineness and carry out two sections of grindings, in the time grinding for the second time, the diameter of ball with net the supporting of footpath is: the diameter of mill should be 0.2 millimeter, net footpath should be 0.1 millimeter, reach while being less than 2.5 microns until fineness of materials, can produce starchiness thickness phenomenon, water conditioner finished product.
Described dispersion agent is selected dispersion agent 5040, and antioxidant is selected antioxidant BHT, and gac is selected gac ZHF.
The present invention compared with prior art, solve the inaccessiable heavy metal of conventional processing method institute and remove problem, utilize and in society, the most easily collected also the most cheap waste product and utilize the material oxidation iron filings to recycle, greatly reduce material cost, and water quality after treatment is more better than traditional treatment method.
[embodiment]
Through the object of high temperature anaerobic reduction, be that original deactivated hammer scale is reduced to the active material to water medium sensitivity.Maximum advantage is also that its operation cost is cheap and draws materials conveniently, and is conducive to utilization of waste material, not only environmental protection but also energy-conservation.
To note the control of temperature at roasting process., very easily condense when the furnace temperature >=930 degree Celsius, will be unfavorable for the pulverizing of back segment operation.
Work in-process after coming out of the stove are deposited in process and are avoided contacting with water air, in order to avoid affect its result of use after two degree oxidations.
Can directly just not pass through roasting process with the reduced iron powder of steel mill yet.Other Ginding process are same with the present invention, and just cost has improved.
In crushing process, to note the proportioning of material and ball-milling medium.The diameter of abrading-ball than with the diameter of terminal material particles than being 1000:1.Above-mentioned so-called multistage barreling and screening mainly refer to particle diameter and the abrading-ball of material, and the order number of screen cloth is suitably supporting, and it is irrealizable settling at one go.
Said supporting ratio problem improperly more than should adjusting in the situation that there is obstruction.
Adjust to after suitable ratio, latch up phenomenon just can not produce.After multistage barreling, after all materials are all by 800 eye mesh screens, just become the work in-process dry powder of water conditioner.
In the preservation process of dry powder, also to avoid contacting with water, air second medium.
Work in-process dry powder is inserted in agitation vat container to water by a certain percentage to be stirred first to discharge water and puts afterwards powder.
When putting powder, must not disposablely pour into, application sieve is pacified and is sieved into slowly, to avoid the network blocking of condensing.
After material evenly mixes with water, then add while stirring appropriate dispersion agent, account for the 1%-1.5% of gross weight, antioxidant 0.5%-0.8%, gac 3%-3.5%, and the various additives of other water conditioners (because water quality is determined, ratio cannot be described) should progressively add successively, can not disposable mixing add.
In whipping process, stirrer should be selected interlayer water cooling, stainless steel, and temperature of cooling water is answered <20 degree Celsius, avoids built-in temperature to raise, and prevents that material from condensing.Affect back segment grinding effect.
After stirring, mixture is inputted in wet grinding machine and processed by pulse pump.The model of shredder selects to measure according to demand size coupling.
Grinding machine also should be selected low fineness cold water circulation stainless steel series.Temperature of cooling water should be lower than 20 degrees Celsius.
Grinding machine barreling should carry out according to the segmentation of above-mentioned thickness secondary.
The ball radius in corase grind stage should match with material diameter with net footpath, and supporting unreasonable meeting produces latch up phenomenon.
The hardness of abrading-ball is answered >8 shore A
The quantity of abrading-ball is relevant with abdominal cavity volume to the model of grinding machine, has put many and can produce latch up phenomenon, and putting to have lacked affects grinding effect.
Put factory building (room temperature should be controlled at 25 DEG C below) the too high grinding effect that affects of temperature of levigator.
Be worked into after certain hour, after (test of laser fineness instrument) packs container in the time that fineness reaches 20 microns, waiting for second segment fine grinding.
Carrying out before fine grinding, the ball in grinding machine and net are changed to corresponding fineness and carry out two sections of grindings.
In the time grinding for the second time, the diameter of ball is even more important with net the supporting of footpath especially, and the diameter of mill should be 0.2 millimeter, and net footpath should be 0.1 millimeter.
After the grinding of certain hour, (number of the time of grinding and material is in direct ratio) reaches while being less than 2.5 microns until fineness of materials, can produce starchiness thickness phenomenon, water conditioner finished product.
It should be noted that in the time that fineness reaches certain standard, liquid material can produce a certain amount of hydrogen in the course of processing.Must guard against with power tool or naked light close, prevent burning.
Embodiment 1
Raw material adopts the hammer scale producing in the forging factory course of processing, body form in the form of sheets, largest particle >=5 centimetre.Smallest particles >300 millimeter.Under drying regime, pack in homemade can, through 180 minutes, after the roasting of 720 degrees Celsius, carry out after multistage dry grinding and secondary wet-milling, average fineness particle diameter is between 0.2 micron and 2.5 microns.Be applied in Jiangxi Copper water treatment, its result is as follows: before processing, total copper content is that 80-400mg/L processes rear≤0.5mg/L.Total arsenic content 150-400mg/L, after processing≤0.5mg/L.PH value 8-11 before processing, 6-7.2 after processing, meets state emission standard completely.
Embodiment 2
Raw material adopts the reduced iron powder of Powder Metallurgy Co. Ltd., Laiwu Iron and Steel Group Corp..The fineness of iron powder is 200 orders, C≤0.15, S≤0.050, TFE >=97.After multistage dry grinding and secondary wet-milling, average fineness particle diameter, between 0.18 micron and 2.2 microns, is applied in the workshop wastewater treatment of Guixi Smelter gold, and its result is as follows:
Total lead content 5-50mg/L before processing, after processing≤0.5mg/L
Total nickel content 5-50mg/L, after processing≤0.5mg/L
Total zinc content 5-50mg/L, after processing≤1.5mg/L
Total cadmium content 1-8mg/L, after processing≤0.1mg/L
Various indexs all reach the emission standard of national regulation.
Claims (7)
1. utilize hammer scale to produce a method for water conditioner, it is characterized in that step is as follows:
(1), will after hammer scale impurity elimination, pack in can, cover sealing cover and seal up again refractory mortar;
(2), treat that the temperature of stoving oven reaches 50-60 degree Celsius, the can of sealing is neatly stacked in stoving oven, between every row, must reserve space more than 20cm, be beneficial to flame and temperature evenly;
(3), etc. when stoving oven temperature rise to 720 degree Celsius, keep thermostatic control 180 minutes, the naturally cooling of then cutting off the electricity supply, while reaching requirement, box is got in blow-on; Wherein hammer scale, through high temperature anaerobic reduction method, is reduced to the active material to water medium sensitivity by original deactivated hammer scale;
(4), by after iron filings screening in can, through grinding and screening, reach work in-process dry powder iron filings pack after requirement fineness for subsequent use with general milling machine;
(5), with the work in-process dry powder iron filings of processing after levigate, add and include but not limited to dispersion agent, antioxidant BHT, gac ZHF, water, then pass through thick, thin two sections of polishings, make water conditioner.
2. a kind of hammer scale that utilizes as claimed in claim 1 is produced the method for water conditioner, it is characterized in that work in-process dry powder iron filings after the work in-process of coming out of the stove in described step (3) grind with in step (4) avoid contacting with water air depositing in process.
3. a kind of method of utilizing hammer scale to produce water conditioner as claimed in claim 1, the diameter that it is characterized in that described step (4) ball mills is 1000:1 with the ratio of the diameter of terminal material particles, through multistage barreling with screening after all materials are all by 800 eye mesh screens, just become work in-process dry powder iron filings.
4. a kind of method of utilizing hammer scale to produce water conditioner as claimed in claim 1, it is characterized in that in described step (5), work in-process dry powder iron filings being inserted in agitation vat container and being stirred, must first discharge water and put afterwards work in-process dry powder iron filings, when putting work in-process dry powder iron filings, applying sieve is slowly sieved into, after material evenly mixes with water, then add while stirring the dispersion agent that accounts for gross weight 1%-1.5%, account for the antioxidant and the gac that accounts for gross weight 3%-3.5% of gross weight 0.5%-0.8%, various additives should progressively add successively, can not disposable mixing add.
5. a kind of method of utilizing hammer scale to produce water conditioner as claimed in claim 4, it is characterized in that in whipping process, stirrer is selected interlayer water cooling, stainless steel, temperature of cooling water is answered <20 degree Celsius, avoid built-in temperature to raise, prevent that material from condensing, after stirring, mixture is inputted in wet grinding machine and processed by pulse pump.
6. a kind of method of utilizing hammer scale to produce water conditioner as claimed in claim 1, it is characterized in that in described step (5), thick, thin two sections of polishings are: the ball radius in corase grind stage should match with material diameter with net footpath, supporting unreasonable meeting produces latch up phenomenon, the hardness of abrading-ball is answered >8 shore A, after processing, in the time that fineness reaches 20 microns, wait for second segment fine grinding after packing container into; Carrying out before fine grinding, abrading-ball in grinding machine and net are changed to corresponding fineness and carry out two sections of grindings, in the time that second segment grinds, the diameter of abrading-ball with net the supporting of footpath is: the diameter of abrading-ball should be 0.2 millimeter, net footpath should be 0.1 millimeter, in the time that fineness of materials is less than 2.5 microns, can produce starchiness thickness phenomenon, water conditioner finished product.
7. a kind of method of utilizing hammer scale to produce water conditioner as claimed in claim 1, the dispersion agent described in it is characterized in that is selected dispersion agent 5040, and antioxidant is selected antioxidant BHT, and gac is selected gac ZHF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310233397.4A CN103351032B (en) | 2013-06-09 | 2013-06-09 | Method for producing water treatment agent by using iron oxide scraps |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310233397.4A CN103351032B (en) | 2013-06-09 | 2013-06-09 | Method for producing water treatment agent by using iron oxide scraps |
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| CN103351032A CN103351032A (en) | 2013-10-16 |
| CN103351032B true CN103351032B (en) | 2014-12-03 |
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| CN201310233397.4A Expired - Fee Related CN103351032B (en) | 2013-06-09 | 2013-06-09 | Method for producing water treatment agent by using iron oxide scraps |
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| CN108126655A (en) * | 2017-12-12 | 2018-06-08 | 环境保护部华南环境科学研究所 | A kind of preparation method of the Jujun grasses charcoal of iron oxide modified |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147018A (en) * | 1996-05-03 | 1997-04-09 | 云南特钢集团公司 | Process and apparatus for production of direct reduced iron |
| CN101181660A (en) * | 2006-11-14 | 2008-05-21 | 东曹株式会社 | Iron powder for organic chlorinated compound decomposition and detoxifying treatment method using the same |
| CN101200320A (en) * | 2007-11-28 | 2008-06-18 | 河北理工大学 | High-carbonaceous metallized pellet for treating waste water and preparation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002020806A (en) * | 2000-07-04 | 2002-01-23 | Kawasaki Steel Corp | Method for producing iron powder for removing contamination |
| JP4833505B2 (en) * | 2002-06-26 | 2011-12-07 | 株式会社神戸製鋼所 | Iron powder for purification |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147018A (en) * | 1996-05-03 | 1997-04-09 | 云南特钢集团公司 | Process and apparatus for production of direct reduced iron |
| CN101181660A (en) * | 2006-11-14 | 2008-05-21 | 东曹株式会社 | Iron powder for organic chlorinated compound decomposition and detoxifying treatment method using the same |
| CN101200320A (en) * | 2007-11-28 | 2008-06-18 | 河北理工大学 | High-carbonaceous metallized pellet for treating waste water and preparation method |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-20806A 2002.01.23 * |
| JP特开2004-82106A 2004.03.18 * |
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Granted publication date: 20141203 |