CN110804701A - Supersaturated oxygen-enriched smelting process for side-blown converter - Google Patents
Supersaturated oxygen-enriched smelting process for side-blown converter Download PDFInfo
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- CN110804701A CN110804701A CN201911242009.2A CN201911242009A CN110804701A CN 110804701 A CN110804701 A CN 110804701A CN 201911242009 A CN201911242009 A CN 201911242009A CN 110804701 A CN110804701 A CN 110804701A
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- blown converter
- smelting
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- enriched
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- 238000003723 Smelting Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 44
- 150000002926 oxygen Chemical class 0.000 title claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- 239000004576 sand Substances 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 239000000571 coke Substances 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 12
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 10
- 239000011449 brick Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 239000004071 soot Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of non-ferrous metal smelting, and provides a side-blown converter supersaturated oxygen-enriched smelting process, which comprises the process flows of chemical examination, calculation, pressing, side-blown converter smelting and the like, wherein a side-blown converter is used for supersaturated oxygen-enriched smelting, the advantages of the side-blown converter and the side-blown converter are combined, corresponding optimization is carried out on corresponding procedures, the optimized combination of the existing smelting technology is fully utilized, and the invention provides a smelting method which is stable and reliable and has high raw material utilization rate, and overcomes the defects of complex process and low raw material utilization rate of the existing supersaturated oxygen-enriched smelting process.
Description
Technical Field
The invention relates to the technical field of non-ferrous metal smelting, in particular to a supersaturated oxygen-enriched smelting process of a side-blown converter.
Background
Oxygen-enriched smelting is a smelting method which uses industrial oxygen to partially or completely replace air so as to strengthen a metallurgical process. In the 50 s of the 20 th century, industrial oxygen steelmaking and blast furnace oxygen-enriched iron making were widely used due to the development of high-efficiency and low-cost oxygen generation methods and equipment. Meanwhile, in the non-ferrous metal smelting, a method for increasing the oxygen content of air in blast air is also used for developing a new smelting method and transforming the laggard traditional process. A side blown converter (side blown converter) is a commonly used metal smelting device, and is a converter steelmaking method in which air or oxygen is blown from the side of a converter body to oxidize and remove impurity elements in molten iron and provide heat to obtain molten steel. The main content of the technical scheme is that the supersaturated oxygen-enriched smelting is carried out by using the side-blown converter, the advantages of the supersaturated oxygen-enriched smelting are combined, and the corresponding working procedures are correspondingly optimized, so that the stable and reliable smelting method with high raw material utilization rate is provided by fully utilizing the optimized combination of the existing smelting technology.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a supersaturated oxygen-enriched smelting process of a side-blown converter, which is used for solving the defects of complex process and low utilization rate of raw materials in the conventional supersaturated oxygen-enriched smelting process.
Disclosure of the invention
In order to solve the technical problem, the invention provides a supersaturated oxygen-enriched smelting process of a side-blown converter, which comprises the following process flows:
step a, preparing raw materials of iron sand, river sand, lime and washing slag, and testing the content of Fe, Si and Ca elements in each raw material;
step b, calculating the weight ratio of the raw materials of iron sand, river sand, lime and washing slag according to the content of Fe, Si and Ca elements tested in the step a, so that the content of Fe in the mixture of the raw materials is 11 percent, and SiO is contained in the mixture2The content of (2) is 13% and the content of CaO is 7%;
step c, uniformly mixing the iron sand, the river sand, the lime and the washing slag according to the proportion calculated in the step b;
step d, pressing the mixture obtained in the step c into a raw material brick by using a brick making machine;
and e, adding the raw material bricks and the coke into a side-blown converter for smelting to finally obtain the alloy, the ice copper cover, the water-quenched slag and the secondary soot.
And c, uniformly mixing the iron sand, the river sand, the lime and the washing slag by using a forklift.
Wherein in the step e, the smelting condition is coke rate delta115%, air volume ζ1＝3600m3H, oxygen concentration η1＝21％。
Wherein in the step e, the smelting condition is coke rate delta214%, air volume ζ2＝1700m3H, oxygen concentration η2＝30％。
Wherein in the step e, the smelting condition is coke rate delta314%, air volume ζ3＝1600m3H, oxygen concentration η3＝42％。
Wherein, after step e, the lead metal content in the alloy, the lead content in the raw material and the lead recovery are calculated.
(III) advantageous effects
The side-blown converter supersaturated oxygen-enriched smelting process provided by the invention comprises the process flows of testing, calculating, pressing, side-blown converter smelting and the like, the side-blown converter is used for supersaturated oxygen-enriched smelting, the advantages of the side-blown converter and the side-blown converter are combined, corresponding working procedures are optimized correspondingly, the optimized combination of the existing smelting technology is fully utilized, the smelting method which is stable and reliable and has high raw material utilization rate is provided, and the defects of complex process and low raw material utilization rate of the existing supersaturated oxygen-enriched smelting process are overcome.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a process flow diagram of a side blown converter supersaturated oxygen-enriched smelting process of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1.
The supersaturated oxygen-enriched smelting process of the side-blown converter comprises the following steps: firstly, testing the grade of elements in each material, and then calculating the weight of iron sand, river sand and lime required to be added according to the process requirements, so that the content of Fe in the mixture of the raw materials is 11 percent, and SiO is ensured2The content of (2) is 13% and the content of CaO is 7%. And secondly, uniformly stirring the washing slag, the iron sand, the river sand and the lime by using a forklift, and pressing the mixture into bricks by using a brick making machine. Then, putting the brick material and coke into a side-blowing furnace according to a certain proportion, and controlling the smelting condition to be coke rate delta115%, air volume ζ1＝3600m3H, oxygen concentration η1The final product was obtained as 21%: alloy, matte cover, water-quenched slag and secondary soot. If necessary, the amount of lead metal in the alloy and the amount of lead metal in the raw material may be calculated, and the vertical yield may be calculated to be 66.27%. The supersaturated oxygen-enriched smelting is carried out by using the side-blown converter, the advantages of the supersaturated oxygen-enriched smelting and the side-blown converter are combined, corresponding working procedures are correspondingly optimized, and the optimization group of the existing smelting technology is fully utilizedAnd the smelting method which is stable and reliable and has high utilization rate of raw materials is provided, and the defects of complex process and low utilization rate of raw materials in the existing supersaturated oxygen-enriched smelting process are overcome.
Example 2.
Example 2 differs from the embodiment of example 1 only in that the smelting conditions are controlled to be coke rate delta214%, air volume ζ2＝1700m3H, oxygen concentration η2The final calculated vertical yield was 67.62% when the yield was 30%.
Example 3.
Example 2 differs from the embodiment of example 1 only in that the smelting conditions are controlled to be coke rate delta314%, air volume ζ3＝1600m3H, oxygen concentration η3The final calculated vertical yield was 72.76% when the yield was 42%.
The final calculated vertical yields of the 3 examples above further demonstrate the feasibility of the side blown converter supersaturated oxygen-enriched smelting process of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The side-blown converter supersaturated oxygen-enriched smelting process is characterized by comprising the following process flows:
step a, preparing raw materials of iron sand, river sand, lime and washing slag, and testing the content of Fe, Si and Ca elements in each raw material;
step b, calculating the weight ratio of the raw materials of iron sand, river sand, lime and washing slag according to the content of Fe, Si and Ca elements tested in the step a, so that the content of Fe in the mixture of the raw materials is 11 percent, and SiO is contained in the mixture2The content of (2) is 13% and the content of CaO is 7%;
step c, uniformly mixing the iron sand, the river sand, the lime and the washing slag according to the proportion calculated in the step b;
step d, pressing the mixture obtained in the step c into a raw material brick by using a brick making machine;
and e, adding the raw material bricks and the coke into a side-blown converter for smelting to finally obtain the alloy, the ice copper cover, the water-quenched slag and the secondary soot.
2. The side-blown converter supersaturated oxygen-enriched smelting process of claim 1, wherein a forklift is used for uniformly mixing iron sand, river sand, lime and washing slag in the step c.
3. The side-blown converter supersaturated oxygen-enriched smelting process as claimed in claim 1, wherein in step e, the smelting condition is coke rate delta115%, air volume ζ1＝3600m3H, oxygen concentration η1＝21％。
4. The side-blown converter supersaturated oxygen-enriched smelting process as claimed in claim 1, wherein in step e, the smelting condition is coke rate delta214%, air volume ζ2＝1700m3H, oxygen concentration η2＝30％。
5. The side blown converter supersaturation as claimed in claim 1The oxygen-enriched smelting process is characterized in that in the step e, the smelting condition is coke rate delta314%, air volume ζ3＝1600m3H, oxygen concentration η3＝42％。
6. The side-blown converter supersaturated oxygen-enriched smelting process as claimed in any one of claims 1 to 5, wherein after step e, the lead metal content in the alloy, the lead content in the raw materials and the lead recovery rate are calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242009.2A CN110804701A (en) | 2019-12-06 | 2019-12-06 | Supersaturated oxygen-enriched smelting process for side-blown converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242009.2A CN110804701A (en) | 2019-12-06 | 2019-12-06 | Supersaturated oxygen-enriched smelting process for side-blown converter |
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| CN110804701A true CN110804701A (en) | 2020-02-18 |
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| CN201911242009.2A Pending CN110804701A (en) | 2019-12-06 | 2019-12-06 | Supersaturated oxygen-enriched smelting process for side-blown converter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4129475A1 (en) * | 1991-09-05 | 1993-03-11 | Metallgesellschaft Ag | METHOD FOR CONTINUOUSLY MELTING METAL LEAD |
| CN102776383A (en) * | 2012-07-04 | 2012-11-14 | 杨龙安 | Method for smelting crude lead in oxygen-enriched side-blowing smelting furnace |
| CN103451445A (en) * | 2013-09-10 | 2013-12-18 | 中国恩菲工程技术有限公司 | Smelting side-blowing reduction lead-zinc smelting process |
| CN106766971A (en) * | 2017-03-14 | 2017-05-31 | 永兴县东宸有色金属再生利用有限公司 | The oxygen-enriched side-blowing intensified smelting stove of the energy leaded secondary material of efficient process |
| CN106834735A (en) * | 2017-03-15 | 2017-06-13 | 济源市万洋冶炼(集团)有限公司 | The method for processing lead plaster |
-
2019
- 2019-12-06 CN CN201911242009.2A patent/CN110804701A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4129475A1 (en) * | 1991-09-05 | 1993-03-11 | Metallgesellschaft Ag | METHOD FOR CONTINUOUSLY MELTING METAL LEAD |
| CN102776383A (en) * | 2012-07-04 | 2012-11-14 | 杨龙安 | Method for smelting crude lead in oxygen-enriched side-blowing smelting furnace |
| CN103451445A (en) * | 2013-09-10 | 2013-12-18 | 中国恩菲工程技术有限公司 | Smelting side-blowing reduction lead-zinc smelting process |
| CN106766971A (en) * | 2017-03-14 | 2017-05-31 | 永兴县东宸有色金属再生利用有限公司 | The oxygen-enriched side-blowing intensified smelting stove of the energy leaded secondary material of efficient process |
| CN106834735A (en) * | 2017-03-15 | 2017-06-13 | 济源市万洋冶炼(集团)有限公司 | The method for processing lead plaster |
Non-Patent Citations (1)
| Title |
|---|
| 株洲冶炼厂冶金读本编写小组编: "《铅的生产》", 31 October 1973, 湖南人民出版社 * |
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Application publication date: 20200218 |