CN105154621A - Preparation method of carburant for steel-making - Google Patents
Preparation method of carburant for steel-making Download PDFInfo
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- CN105154621A CN105154621A CN201410243232.XA CN201410243232A CN105154621A CN 105154621 A CN105154621 A CN 105154621A CN 201410243232 A CN201410243232 A CN 201410243232A CN 105154621 A CN105154621 A CN 105154621A
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- coke powder
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Abstract
The invention relates to a preparation method of a carburant for steel-making. The method aims at preparing the carburant for steel-making production through processes, such as screening, drying, and secondary screening by furthest utilizing tiny coke particles generated during a production process of dry quenching in a coking plant, wherein the carburant is mainly applied to the technical field of steel-making in a metallurgical industry. The method comprises: taking an undersize product less than 10mm as coke powder during the production process in the coking plant; performing pre-treatment of the coke powder, wherein pre-treatment comprises performing mechanical screening and grading of the coke powder; taking an oversize product, the particle size of which is in a range of 5-10 mm, obtained from the above screening as raw coke powder to produce the carburant; taking the oversize product, the particle size of which is in a range of 5-10 mm, out through the secondary screening; and performing dewatering and drying of the raw coke powder, the water content of which is over 2%, by a vibrated fluidized bed drier. According to the carburant produced from coke powder, the smelting cost is greatly reduced, and resources of coke powder can be effectively used.
Description
Technical field
The present invention relates to a kind of preparation method of steel-smelting carburant, the method is intended to maximally utilise the tiny burnt grain produced in coke-oven plant's dry coke quenching production process, by techniques such as screening, dryings, again screening for the preparation of the carburelant of STEELMAKING PRODUCTION, be mainly used in metallurgy industry steelmaking technical field.
Background technology
This auxiliary material of carburelant all can be used in domestic smelter steelmaking process to some extent to propose carbon operation to molten liquid steel, enable the carbon element content in molten steel reach the composition requirement of steel grade.A large amount of carburelant product used is mainly obtained with spent cathodes, pitch coke etc. at present, is characterized in that carbon content is high, generally can reaches 92-99%, and product granularity is comparatively even, and the dust that use procedure produces is few.But because raw material sources are limited, price is higher, therefore, the market value of carburelant is also relatively high.For guaranteeing the stable supply of this series products, compress purchase cost to greatest extent, large quantifier elimination and exploration work have been done by each iron and steel enterprise simultaneously.
The particle diameter produced in smelter dry coke quenching production process is less than the particle of 10mm, due to undersized, can be blown away by gas stream in the stove in pig iron smelting process, thus skeleton can not be played, reduction and thermal source etc. should have effect, by demarcation and the measuring and calculating of carbon element content in STRENGTH ON COKE and sulfur content, can find out, the carbon content rate of coke is generally between 85-88%, the content of the harmful elements such as sulphur is generally below 0.8%, for common steel grade, the sulfur brought into when it improves identical carbon content is negligible, and utilize coke powder to produce the cost of carburelant far below conventional carburelant, therefore, use coke powder carburelant greatly can reduce smelting cost, and coke powder resource can be made to be utilized effectively.
Summary of the invention
The present invention is for the purpose of solving the problem, and the source of goods mainly solving existing steel-smelting and carburating agent existence is stable not, and product-feed lacks guarantee, market value is higher, is unfavorable for the problem reducing steel-making cost.
For achieving the above object, the present invention adopts following technical proposals: a kind of preparation method of steel-smelting carburant, and the method is realized by following processing step:
1. in coke-oven plant's production process, usually only classification is carried out to the above coke of fritter, hierarchical approaches is screening, its screen underflow is less than 10mm as coke powder, pre-treatment is carried out to coke powder, pre-treatment for carry out mechanical grading classification to coke powder, be that the screen overflow of 5 ~ 10mm is as producing the raw material coke powder of carburelant using the granularity of current screening process;
2., by coke powder after treatment in step 1, adopt closed feed bin or storage tank to carry out storage of raw materials coke powder and be transported to carburelant production scene;
3. in production scene, regrading is carried out to raw material coke powder, adopt linear vibrating screen as screening plant, get the screen overflow that granularity is 5 ~ 10mm;
4. adopt quick moisture analyser, to carry out real-time analysis and detection to the water ratio of the raw material coke powder through screening, for the raw material coke powder of water ratio more than 2%, adopt Vibratingfluidbeddrier to carry out dehydrating process, drying temperature is less than or equal to 300 degrees Celsius;
5. dried material carries out waterproof, Moistureproof quantitative packaging by automatic quantitative packing machine after cooling.
The present invention has following advantage and beneficial effect:
The present invention adopts the particle diameter produced in smelter dry coke quenching production process to be less than the particle of 10mm, due to undersized, can be blown away by gas stream in the stove in pig iron smelting process, thus skeleton can not be played, reduction and thermal source etc. should have effect, by demarcation and the measuring and calculating of carbon element content in STRENGTH ON COKE and sulfur content, can find out, the carbon content rate of coke is generally between 85 ~ 88%, the content of the harmful elements such as sulphur is generally below 0.8%, for common steel grade, the sulfur brought into when it improves identical carbon content is negligible, and utilize coke powder to produce the cost of carburelant far below conventional carburelant, therefore, use coke powder carburelant greatly can reduce smelting cost, and coke powder resource can be made to be utilized effectively.
Specific embodiments
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment
A preparation method for steel-smelting carburant, the method is realized by following processing step:
1. in coke-oven plant's production process, usually only classification is carried out to the above coke of fritter, hierarchical approaches is screening, its screen underflow is less than 10mm as coke powder, pre-treatment is carried out to coke powder, the granularity of current screening process, for carry out mechanical grading classification to coke powder, is that the screen overflow of 5 ~ 10mm is as the raw material coke powder producing carburelant by pre-treatment;
2., by the coke powder after drying process in step 1, adopt closed feed bin or storage tank to carry out storage of raw materials coke powder and be transported to carburelant production scene;
3. in production scene, regrading is carried out to raw material coke powder, adopt linear vibrating screen as screening plant, get the screen overflow that granularity is 5 ~ 10mm, this step is the dust suppressing to produce in product use procedure, regrading should be carried out to raw material coke powder, to ensure the clean of carburelant product as far as possible in production scene;
4. adopt quick moisture analyser, to carry out real-time analysis and detection to the water ratio of the raw material coke powder through screening, for the raw material coke powder of water ratio more than 2%, adopt Vibratingfluidbeddrier to carry out dehydrating process, drying temperature is less than or equal to 300 degrees Celsius;
5. dried material carries out waterproof, Moistureproof quantitative packaging by automatic quantitative packing machine after cooling.
In principle, output material from feed bin and start until in the complete a whole set of production process of the packing of product, the transmission of each inter process should be in closed state as far as possible, contacts to reduce material with the direct of air, the probability of reduction material absorption water in air part.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a preparation method for steel-smelting carburant, is characterized in that, the method is realized by following processing step:
1) in coke-oven plant's production process, usually only classification is carried out to the above coke of fritter, hierarchical approaches is screening, its screen underflow is less than 10mm as coke powder, pre-treatment is carried out to coke powder, the granularity of current screening process, for carry out mechanical grading classification to coke powder, is that the screen overflow of 5 ~ 10mm is as the raw material coke powder producing carburelant by pre-treatment;
2) by step 1) in coke powder after treatment, adopt closed feed bin or storage tank to carry out storage of raw materials coke powder and be transported to carburelant production scene;
3) in production scene, regrading is carried out to raw material coke powder, adopt linear vibrating screen as screening plant, get the screen overflow that granularity is 5 ~ 10mm;
4) quick moisture analyser is adopted, to carry out real-time analysis and detection to the water ratio of the raw material coke powder through screening, for the raw material coke powder of water ratio more than 2%, adopt Vibratingfluidbeddrier to carry out dehydrating process, drying temperature is less than or equal to 300 degrees Celsius;
5) dried material carries out waterproof, Moistureproof quantitative packaging by automatic quantitative packing machine after cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243232.XA CN105154621A (en) | 2014-06-03 | 2014-06-03 | Preparation method of carburant for steel-making |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243232.XA CN105154621A (en) | 2014-06-03 | 2014-06-03 | Preparation method of carburant for steel-making |
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| CN105154621A true CN105154621A (en) | 2015-12-16 |
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| CN201410243232.XA Pending CN105154621A (en) | 2014-06-03 | 2014-06-03 | Preparation method of carburant for steel-making |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054685A (en) * | 2018-09-13 | 2018-12-21 | 黄元金 | Coke powder adhesive, suitable for the focal sphere and preparation method thereof of closed calcium carbide furnace production, closed calcium carbide furnace calcium carbide production method |
| CN111500819A (en) * | 2020-03-26 | 2020-08-07 | 江苏嘉明碳素新材料有限公司 | Processing method for producing high-quality carburant by using low-quality carburant raw material |
| CN113088309A (en) * | 2021-03-04 | 2021-07-09 | 唐钢美锦（唐山）煤化工有限公司 | Method and device for reducing ash content in coke powder |
| CN113736952A (en) * | 2021-08-31 | 2021-12-03 | 广东韶钢松山股份有限公司 | Steel-making warming agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107439A (en) * | 1994-11-21 | 1995-08-30 | 舒新前 | Coke powder series refined carbon powder an its producing process |
-
2014
- 2014-06-03 CN CN201410243232.XA patent/CN105154621A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107439A (en) * | 1994-11-21 | 1995-08-30 | 舒新前 | Coke powder series refined carbon powder an its producing process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054685A (en) * | 2018-09-13 | 2018-12-21 | 黄元金 | Coke powder adhesive, suitable for the focal sphere and preparation method thereof of closed calcium carbide furnace production, closed calcium carbide furnace calcium carbide production method |
| CN111500819A (en) * | 2020-03-26 | 2020-08-07 | 江苏嘉明碳素新材料有限公司 | Processing method for producing high-quality carburant by using low-quality carburant raw material |
| CN111500819B (en) * | 2020-03-26 | 2022-07-08 | 江苏嘉明碳素新材料有限公司 | Processing method for producing high-quality carburant by using low-quality carburant raw material |
| CN113088309A (en) * | 2021-03-04 | 2021-07-09 | 唐钢美锦（唐山）煤化工有限公司 | Method and device for reducing ash content in coke powder |
| CN113736952A (en) * | 2021-08-31 | 2021-12-03 | 广东韶钢松山股份有限公司 | Steel-making warming agent and preparation method thereof |
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Application publication date: 20151216 |