CN100393420C - Method of separating iron and carbon from dust setting ash - Google Patents
Method of separating iron and carbon from dust setting ash Download PDFInfo
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- CN100393420C CN100393420C CNB2005100163156A CN200510016315A CN100393420C CN 100393420 C CN100393420 C CN 100393420C CN B2005100163156 A CNB2005100163156 A CN B2005100163156A CN 200510016315 A CN200510016315 A CN 200510016315A CN 100393420 C CN100393420 C CN 100393420C
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Abstract
The present invention discloses a method for separating iron and carbon from dust removing ash, which belongs to the technique of the separation of dust removing ash. The method adopts a separation system composed of a mixer, a water storage tank, a conveying pump, an electromagnetic separation tower, a filter and a dryer. The separation process realizing the separation of iron and carbon from the dust removing ash comprises that the dust removing ash is mixed with water so as to prepare suspension which is filled into the separation tower from the top of the separation tower via the pump; then water enters from the bottom of the electromagnet separation tower; the suspension liquid realizes the separation of the iron and the carbon under the action of the magnetic field of the electromagnetic separation tower. Suspension liquid with carbon is produced at the top of the tower and is filtered and dried, carbon products are obtained, and filtered water returns to the water storage tank. The magnetic field is cut, suspension liquid with iron is produced at the bottom of the tower and is filtered and dried, iron products are obtained, and filtered water returns to the water storage tank. The present invention has the advantages of simple manufacturing process and no secondary pollution generation, effectively improves environment and changes wastes into valuables; the iron and the carbon obtained after separation can be made into products with high added value, and the cycle economy recurs.
Description
Technical field
The present invention relates to a kind of method, belong to the dedusting ash isolation technics by dedusting ash separation of iron and charcoal.
Background technology
Iron and steel enterprise can discharge a large amount of " three wastes " in process of production, and wherein the discharge capacity of kiln tail ash (claiming dedusting ash again) is very big.If 1 ton of steel of every production, discharging 15kg kiln tail ash, to produce 8000 ten thousand tons of steel per year, then the annual emissions of kiln tail ash just can reach 1,200,000 tons.These accumulations and the kiln tail ash that flies upward cause severe contamination to plant area and surrounding environment, and ecological environments such as farmland are also had very big harm.Therefore, the development and utilization to kiln tail ash has been subjected to people's attention.Developed country such as the U.S., Japan pays much attention to the processing of kiln tail ash, they have set up the specialized factory that handles kiln tail ash, have plenty of the recovery metal, have plenty of the ion-exchange of employing and prepare high purity ferric oxide, the pigment that further produces choice goods, magnetic material, catalyst etc.; The charcoal that reclaims is as rubber-reinforcing filler, or does the raw material etc. of ink, paint.
China has been an important research project to the development and utilization of kiln tail ash.The iron and steel enterprise that some are big as Shoudu Iron and Steel Co, climb steel, Wuhan Iron and Steel Plant etc. and also be devoted to comprehensive utilizating research to kiln tail ash, has obtained many application achievements: as with making steel-making flux after the kiln tail ash granulation, return the raw material plant of iron company, or return the sintered material workshop; Have plenty of as the building materials materials, as filler of making cement, clay brick etc.But, the research report that main component iron in the kiln tail ash separates with charcoal is less.Adopt electromagnetic method that iron in the dedusting ash and charcoal wet separation are not then appeared in the newspapers.
The rational exploitation and utilization of dedusting ash both can prevent to produce secondary pollution, improved environment effectively, can turn waste into wealth again, made full use of resource.Dedusting ash can be passed through the processing and preparing active carbon through the product charcoal after separating, and isolated iron can be done magnetic material or iron pigment etc.These products have very high using value, by rational exploitation, can be made into high value-added product.Economic benefit and obvious social benefit.
Summary of the invention
The object of the present invention is to provide a kind of method by dedusting ash separation of iron and charcoal.This method technology is simple, does not pollute.
The present invention is realized by following technical proposals, a kind of method by dedusting ash separation of iron and charcoal, this method adopts the system that comprises that dedusting ash blender, aqua storage tank, delivery pump, electromagnetism knockout tower, filter and drier are formed, realization is characterized in that comprising following process by dedusting ash separation of iron and charcoal:
1. the dedusting ash that with average grain diameter is the 27-50 micron is mixed with water, is made into 0.2-0.5kgL
-1Suspension.
2. suspension is added electromagnetism knockout tower by electromagnetism knockout tower top with the flow of 5-8L/min through pump.
3. after the suspension adding finishes, separate water inlet water inlet at the bottom of the Tata with the flow of 140-240L/h by electromagnetism, meanwhile the electromagnetism knockout tower is applied magnetic field, suspension is under 300-500 Gauss's the effect in magnetic field in magnetic field intensity, realization iron separates with charcoal, contain charcoal suspension by the outlet extraction of electromagnetism knockout tower top, obtain the charcoal product through filter filtration and drier drying, filtrate returns aqua storage tank.
4. when charcoal extraction end, cut off the magnetic field of electromagnetism knockout tower, by electromagnetism knockout tower outlet at bottom extraction Armco magnetic iron suspension, obtain the Armco magnetic iron product through filter filtration and drier drying, filtrate returns aqua storage tank.
The invention has the advantages that, technical process is simple, process does not produce secondary pollution, improved environment effectively, this has not only realized turning waste into wealth, and the product charcoal that obtains after separating, can pass through the processing and preparing active carbon, the iron that obtains can be used for preparing magnetic material or iron pigment etc., and these products all have very high using value and added value, have fully reproduced recycling economy.
Description of drawings
Fig. 1 is for implementing process unit schematic flow sheet of the present invention.
The specific embodiment
Example 1:
With the 1kg dedusting ash is example, and dedusting ash is mixed with water, and the suspension of furnishing 0.2kg/L is added by electromagnetism knockout tower cat head charging aperture with the 5L/min flow by pump.This tower diameter is 100 millimeters, and is high 2.5 meters, and 6 magnetic field intensities of its external stability are 300-500G (Gauss) solenoid.After treating reinforced finishing, open water inlet, making discharge is 200L/h, and magnetic field intensity is controlled at 400G, and the iron carbon content is as shown in table 1 in the sample that different time separated.
Table 1 sample time and electromagnetic separation effect (kiln tail ash 1.00kg)
Example 2:
Operating procedure is with example 1.The control flow of inlet water is 200L/h, and magnetic field intensity is 340 Gausses' magnetic field, moves in 35 minutes the cat head charcoal sample, the carbonaceous amount is 290g, and weight of iron is 4.5g, and weight of iron is 655g in the tower floor iron sample, the carbonaceous amount is 11.2g, and carbon content is 1.68% in the tower floor iron sample.
Example 3:
Operating procedure is with example 1.Control discharge is 140L/h, and magnetic field intensity is the magnetic field about 400 Gausses, moves in 50 minutes the charcoal sample, and the carbonaceous amount is 285g, and weight of iron is 2.5g, and weight of iron is 680g in the tower floor iron sample, and the carbonaceous amount is 28.5g, and carbon content is 4% in the tower floor iron sample.
Claims (1)
1. method by dedusting ash separation of iron and charcoal, this method adopts the system that comprises that dedusting ash blender, aqua storage tank, delivery pump, electromagnetism knockout tower, filter and drier are formed, and realizes it is characterized in that comprising following process by dedusting ash separation of iron and charcoal:
1) is that the dedusting ash of 27-50 micron is mixed with water with average grain diameter, is made into 0.2-0.5kgL
-1Suspension;
2) suspension is added electromagnetism knockout tower by electromagnetism knockout tower top with the flow of 5-8L/min through pump;
3) after the suspension adding finishes, separate water inlet water inlet at the bottom of the Tata with the flow of 140-240L/h by electromagnetism, meanwhile the electromagnetism knockout tower is applied magnetic field, suspension is under 300-500 Gauss's the effect in magnetic field in magnetic field intensity, realization iron separates with charcoal, contain charcoal suspension by the outlet extraction of electromagnetism knockout tower top, obtain the charcoal product through filter filtration and drier drying, filtrate returns aqua storage tank;
4) when charcoal extraction end, cut off the magnetic field of electromagnetism knockout tower, by electromagnetism knockout tower outlet at bottom extraction Armco magnetic iron suspension, obtain the Armco magnetic iron product through filter filtration and drier drying, filtrate returns aqua storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100163156A CN100393420C (en) | 2005-11-23 | 2005-11-23 | Method of separating iron and carbon from dust setting ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100163156A CN100393420C (en) | 2005-11-23 | 2005-11-23 | Method of separating iron and carbon from dust setting ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1785528A CN1785528A (en) | 2006-06-14 |
| CN100393420C true CN100393420C (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100163156A Expired - Fee Related CN100393420C (en) | 2005-11-23 | 2005-11-23 | Method of separating iron and carbon from dust setting ash |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234766B (en) * | 2008-03-03 | 2010-06-02 | 北京科技大学 | Method for producing potassium chloride by steel enterprise sintering electro-precipitating dust |
| CN102266817A (en) * | 2010-06-04 | 2011-12-07 | 高坷 | Knockout tower of regenerated fuel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108450A (en) * | 1986-12-12 | 1988-11-16 | 武汉钢铁公司专利管理室 | Make the method for iron oxide red with soot from steel making |
| CN1042134A (en) * | 1988-10-22 | 1990-05-16 | 湖南省冶金材料研究所 | Produce the technology of ferrite with utilizing smoke dust of oxygen blast open-hearth furnace with brown iron oxide |
| JP2004149829A (en) * | 2002-10-29 | 2004-05-27 | Jfe Engineering Kk | Method for producing iron powder, and soil cleaning agent |
| CN1548234A (en) * | 2003-05-23 | 2004-11-24 | 鞍钢集团鞍山矿业公司研究所 | Ore dressing process of treating poor hematite |
-
2005
- 2005-11-23 CN CNB2005100163156A patent/CN100393420C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108450A (en) * | 1986-12-12 | 1988-11-16 | 武汉钢铁公司专利管理室 | Make the method for iron oxide red with soot from steel making |
| CN1042134A (en) * | 1988-10-22 | 1990-05-16 | 湖南省冶金材料研究所 | Produce the technology of ferrite with utilizing smoke dust of oxygen blast open-hearth furnace with brown iron oxide |
| JP2004149829A (en) * | 2002-10-29 | 2004-05-27 | Jfe Engineering Kk | Method for producing iron powder, and soil cleaning agent |
| CN1548234A (en) * | 2003-05-23 | 2004-11-24 | 鞍钢集团鞍山矿业公司研究所 | Ore dressing process of treating poor hematite |
Non-Patent Citations (2)
| Title |
|---|
| 利用钢厂除尘灰制备铁系颜料等的方法及现状. 沈腊珍等.现代涂料与涂装，第2003年03期. 2003 |
| 利用钢厂除尘灰制备铁系颜料等的方法及现状. 沈腊珍等.现代涂料与涂装，第2003年03期. 2003 * |
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| CN1785528A (en) | 2006-06-14 |
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