CN1333092A - Mud treating method - Google Patents
Mud treating method Download PDFInfo
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- CN1333092A CN1333092A CN 01127337 CN01127337A CN1333092A CN 1333092 A CN1333092 A CN 1333092A CN 01127337 CN01127337 CN 01127337 CN 01127337 A CN01127337 A CN 01127337A CN 1333092 A CN1333092 A CN 1333092A
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- Prior art keywords
- sludge
- mud
- moisture
- cream
- sintering
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- Treatment Of Sludge (AREA)
Abstract
The method for treating sludge includes the following steps: making the blast furnace or steel-smelting sewage pass through precipitator to precipitate sludge, and make its water content be 80-90%, using dewaterer equipment to make the water content of sludge be 30-45%, making the dewatered sewage return back into precipitator and feeding the sludge whose water content is 30-45% into sludge bin, then feeding it into sludge aggregate bin connected with screw feeder equipped with sludge disperser, and dispersing the sludge on the sintering or pelletizing raw material belt conveyer. The treated oily sludge whose waer content is 30-45% can be directly added on the sintering or polletizing raw material belt conveyer, so that it can utilize all the sludge, and its cost is low.
Description
Technical field:
The present invention relates to the utilization of metallurgy industry waste material, is a kind of mud treating method.
Background technology:
Steel-smelting sewage sludge iron content about 50%, granularity accounts for more than 99% for-200 purposes, and basicity reaches about 2.5.This mud can substitute smart powder of part iron and bentonite, is the good raw material that is used for pellet formation, reduces the pellet formation cost.Ironmaking mud iron content about 30%, carbon containing is about 15-20%, and size range is big, relatively thicker, can be used for SINTERING PRODUCTION after the processing.These mud major parts are used as waste disposal, and promptly contaminate environment causes the waste of iron-containing resource again.There is only a few enterprise that these mud are handled at present, its treatment process is: blast furnace or steel-smelting sewerage, the process primary sedimentation is to moisture about 85% mud, adopt mechanism filter-pressing or vacuum suction filter equipment with sludge dewatering to moisture about 40%, then it is heated cylinder or drying with steam, airing is handled to moisture 12-15%, and its dried shape material is used for being used for pellet formation etc. after sintering or the fragmentation.The deficiency of this treatment process is: the material after the processing, discontinuous when being used to produce, moisture about 40% mud cream is the ointment shape, can not use in the agglomerates of sintered pellets production, oven dry or the moisture mud cream about 40% of airing account for big, the contaminate environment in place, and investment is big, working cost is high.
Summary of the invention:
The objective of the invention is, a kind of mud treating method is provided, this method is had the following advantages: processing cost is low, and the treating processes no dust pollution need not take a large amount of places, the self-produced mud of iron and steel enterprise all can be utilized etc.
The present invention is in order to solve the existing in prior technology problem, adopt following scheme to solve, blast furnace or steel-smelting sewerage through settling vessel with sludge settling to moisture 80-90%, use dehydration equipment to dewater to mud cream moisture 30-45%, make sewage backflow after the dehydration to settling vessel, moisture 30-45% mud cream input sludge bin, be transported into the mud collecting bin through conveying equipment then, the mud collecting bin is connected with screw feeder, mud cream decollator is installed on the screw feeder, and mud cream is distributed on sintering or the pellet feed conveyor uniformly through decollator.Decollator outlet on the screw feeder in the inventive method is gone up netted gland is installed, and is convenient to disperse uniformly moisture 30-45% mud cream.
Method of the present invention learns to have following advantage through repetition test: moisture after treatment 30---45% ointment shape mud cream, can directly add and be fitted on sintering or the pellet feed conveyor, the utilization ratio height, it is convenient to utilize, and does not account for the place, free from environmental pollution, do not need oven dry, airing, less investment, cost is low, mud all can be utilized etc.
Embodiment:
For ease of better understanding content of the present invention, treatment process of the present invention is represented with synoptic diagram, accompanying drawing 1 is the process flow diagram of method for sludge treatment of the present invention, accompanying drawing 2 is structural representations of screw feeder, accompanying drawing 3 is A portion enlarged diagrams in the accompanying drawing 2, accompanying drawing 4 be in the accompanying drawing 3 B to synoptic diagram.
Mud treating method of the present invention is: the sewage that comes from blast furnace 1 through settling vessel 2 with sludge settling to water content 80-90%, use water extracter 3 to dewater to mud cream moisture 30-45%, sewage after the dehydration is back in the settling vessel 2 through pipeline 4, moisture 30-45% mud cream is through handling machinery 5 input sludge bin 6, adopt transportation equipment 7 that it is transported to mud collecting bin 8 then, mud collecting bin 8 is connected with screw feeder 9, mud cream decollator 11 is installed on the screw feeder 9, mud cream enters decollator 11 through spiral tube 12 and is distributed to uniformly on sintering or the pellet feed conveyor 10, is convenient to utilize.Netted gland 14 is installed in the outlet of decollator 11, offer several holes on the end face of this gland, the hole of mud cream by netted gland 14 is dispersed in uniformly to be used on sintering or the pellet feed conveyor producing, make the material after the processing, can be directly used in production, save operation, reduce labor intensity, further reduce cost, and reached the purpose that waste material all utilizes.13 is support bars among the figure.
Screw feeder described in the inventive method can adopt and drag the formula pump to substitute, to reach even conveying and to disperse the purpose of mud cream to get final product.The formula pump of dragging is a known technology.
Claims (2)
1, mud treating method, blast furnace or steel-smelting sewerage through settling vessel with sludge settling to moisture 80-90%, use dehydration equipment to dewater to mud cream moisture 30-45%, it is characterized in that: make sewage backflow after the dehydration to settling vessel, moisture 30-45% mud cream input sludge bin, be transported into the mud collecting bin through conveying equipment then, the mud collecting bin is connected with screw feeder, mud cream decollator is installed on the screw feeder, and mud cream is distributed on sintering or the pellet feed conveyor uniformly through decollator.
2, mud treating method according to claim 1 is characterized in that: the decollator outlet is gone up netted gland is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011273372A CN1180893C (en) | 2001-08-20 | 2001-08-20 | Mud treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011273372A CN1180893C (en) | 2001-08-20 | 2001-08-20 | Mud treating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1333092A true CN1333092A (en) | 2002-01-30 |
| CN1180893C CN1180893C (en) | 2004-12-22 |
Family
ID=4667304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011273372A Expired - Fee Related CN1180893C (en) | 2001-08-20 | 2001-08-20 | Mud treating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180893C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714104A (en) * | 2015-12-09 | 2016-06-29 | 涞源县奥宇钢铁有限公司 | Device for preheating to-be-sintered raw materials with steam and sludge |
-
2001
- 2001-08-20 CN CNB011273372A patent/CN1180893C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714104A (en) * | 2015-12-09 | 2016-06-29 | 涞源县奥宇钢铁有限公司 | Device for preheating to-be-sintered raw materials with steam and sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1180893C (en) | 2004-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041222 Termination date: 20120820 |