CN1233976C - Blast furnace powder-spraying intensified smelting technology - Google Patents
Blast furnace powder-spraying intensified smelting technology Download PDFInfo
- Publication number
- CN1233976C CN1233976C CN 02113205 CN02113205A CN1233976C CN 1233976 C CN1233976 C CN 1233976C CN 02113205 CN02113205 CN 02113205 CN 02113205 A CN02113205 A CN 02113205A CN 1233976 C CN1233976 C CN 1233976C
- Authority
- CN
- China
- Prior art keywords
- smelting
- powder
- blast furnace
- coke
- granular material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The present invention relates to a blast furnace powder-spraying reinforced smelting technique which belongs to the technical field of smelting non-ferrous metal, and particularly to lead in blast furnaces. The present invention uses a spray gun to spray single or combined powder coal, coke powder and powdery materials, which are mixed with air, into the blast furnace for smelting in the technological process of traditional smelting. The low-priced powder coal, coke powder and powdery materials can be directly sprayed and blown into the blast furnace for smelting, which can reduce the quantity of consumption of block coke and reduce smelting cost. The present invention has the advantages of leaving out the granulation and the block casting of the powdery materials, preventing large amounts of sintered return powder from entering sintering operation, greatly simplifying the procedure for material preparation, improving the processing capacity of the sintering operation and making full use of the superiority of a large specific surface area of the powdery materials and reinforcing smelting processes.
Description
Technical field
The invention belongs to the shaft smelting non-ferrous metal, particularly refine plumbous technical field.
Background technology
Blast furnace has characteristics such as specific productivity is big, adaptability to raw material is strong, the thermal efficiency is high, cost is low, floor space is little, add the rich experiences and the constantly technological improvement of long-term production accumulation, this traditional smelting equipment and technology are used widely in the plumbous field of refining.The containing lead skim (leaded 10～60%) and can use retailoring of blast furnace of the rich lump ore of lead agglomerate, lead oxide nodulizing, lead oxide, other oxidizing semlting technology output, the lead bullion in the whole world 80% originates in blast furnace reduction at present.When handling lead concentrate, tradition refining splicer skill is with the concentrate sintering desulfuration, and 50～70% powdery agglomerate can not directly add shaft smelting behind the sintering, must return sintering circuit, with carry out sintering after lead concentrate mixes, the amount of returning is big, has reduced the disposal ability of sintering plant.On the other hand, this traditional smelting technology will consume the block coke of a large amount of costlinesses, and during as the melting agglomerate, burnt rate is 8～14%, accounts for more than 20% of lead smelt cost.Granular material (sintering back powder, leaded flue dust, lead oxide fine ore, Water Quenching Slag) needs through behind granulation or the ingot bar; could guarantee that blast furnace has air permeability and good; make lead compound in reducing atmosphere, finish fusion process, to obtain desirable technical-economic index.Thereby cause melting pretreatment procedure complexity or decrease in efficiency.
Summary of the invention
Purpose of the present invention is just in order to solve existing blast furnace above shortcomings part, and provide a kind of block coke consumption that reduces, directly spray into dusty fuel in the stove, simultaneously, various oxide materials, particularly the lead oxides material of powdery partly or entirely directly can be blown into the shaft smelting method of stove melting.
The objective of the invention is to be achieved through the following technical solutions.
This blast furnace powder-spraying method of smelting is in traditional melting non-ferrous metal technical process, the also single or combination and mixes and afterwards spray into melting in the blast furnace with spray gun going into the stokehold with air with fine coal, coke powder and granular material.
When fine coal, coke powder and granular material mixed, fine coal and coke powder weight ratio single or combination accounted for 1/2 at least; The granularity of fine coal, coke powder and granular material all is not more than 2mm; Described granular material is sintering back powder or Water Quenching Slag or flue dust or lead oxide fine ore or their mixture; Described air is normal air or oxygen-enriched air.
This method of smelting has reduced the consumption of block coke, can alleviate the deficiency of China's coking resource; Can directly utilize cheap broken Jiao, improve the utilization rate of coke, reduce smelting cost; Simultaneously, owing to granular material directly can be blown into stove, remove granular material granulation, ingot bar from and avoided a large amount of sintering back powders to enter sintering circuit, can simplify procedure for preparation greatly, improve the disposal ability of sintering circuit, and make full use of the big advantage of powder specific area, intensified smelting process.
The specific embodiment
Further set forth the present invention below by embodiment.
Be the block coke of 30～100mm, block lead-containing material (agglomerate, the rich lump ore of lead oxide, block oxidation lead skim) and flux with granularity adds in the stove by the order of coke → lead-containing material → flux in batches.In the smelting process, material in the stove moves down from top to bottom gradually, the reducibility gas that produces in the burning of the coke of blast furnace tuyere area flows from the bottom up, material with the convection process of reducibility gas in, constantly change its physics and chemical property, lead compound is reduced gradually, until finishing whole metallurgical reactions.In the blast furnace smelting process, granularity is mixed the back less than fine coal, coke powder and the granular material of 2mm spray into melting in the stove with normal air or oxygen-enriched air with spray gun.Fine coal, coke powder and granular material can mix the back separately separately and spray in the stove respectively with spray gun with air, also can earlier fine coal, coke powder and granular material be mixed to mix with air again and then near the tuyere area of blast furnace, spray into the stove with spray gun, utilize the big characteristics of granular material specific area, realize shaft smelting, simplify the pretreatment procedure of shaft smelting.Fine coal and coke powder can only use one, but also both are used in combination, but its single or combination is when mixing use with granular material, and weight ratio is not less than 1/2.Coke powder or blast furnace that employed coke powder can be the attached product of coke factory use remaining broken Jiao in back.The winding-up amount of fine coal or coke powder changes according to handling the gas permeability of lead-containing material in blast furnace.Method of the present invention has been removed from the traditional handicraft must become block operation with the granular material sintering processes, and the coal dust or the coke powder that can make full use of the cheapness of the attached product of coke factory act as a fuel, reduce the consumption of block coke, both reduced production cost, but intensified smelting process again.
The present invention also is applicable to airtight blast furnace and handles the blast furnace of zinc, copper, antimony, tin.
Claims (6)
1, blast furnace powder-spraying method of smelting, be coke, return slag, material, flux to be added blast furnace in batches carry out melting, it is characterized in that, in fusion process, also single or combination and mixes with air and then to spray into melting in the blast furnace with spray gun with fine coal, coke powder and granular material.
2, method of smelting according to claim 1 is characterized in that, when fine coal, coke powder and granular material mixed, fine coal and coke powder weight ratio single or combination accounted for 1/2 at least.
3, method of smelting according to claim 1 is characterized in that, the granularity of fine coal and coke powder is not more than 2mm.
4, method of smelting according to claim 1 is characterized in that, the granularity of granular material is not more than 2mm.
5, method of smelting according to claim 1 is characterized in that, described granular material is sintering back powder or Water Quenching Slag or flue dust or lead oxide fine ore or their mixture.
6, method of smelting according to claim 1 is characterized in that, described air is normal air or oxygen-enriched air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113205 CN1233976C (en) | 2002-01-05 | 2002-01-05 | Blast furnace powder-spraying intensified smelting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113205 CN1233976C (en) | 2002-01-05 | 2002-01-05 | Blast furnace powder-spraying intensified smelting technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1395079A CN1395079A (en) | 2003-02-05 |
| CN1233976C true CN1233976C (en) | 2005-12-28 |
Family
ID=4742504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02113205 Expired - Fee Related CN1233976C (en) | 2002-01-05 | 2002-01-05 | Blast furnace powder-spraying intensified smelting technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233976C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463974C (en) * | 2007-03-21 | 2009-02-25 | 鞍钢股份有限公司 | Dry cooled coke powder blowing process and apparatus for blast furnace |
| CN102102152A (en) * | 2009-12-17 | 2011-06-22 | 云南冶金集团股份有限公司 | Method for smelting lead by reducing lead-rich slags |
| CN105603197A (en) * | 2015-12-23 | 2016-05-25 | 河南豫光金铅股份有限公司 | Device and process for directly reducing smelt antimony from antimony slag and antimony ash |
-
2002
- 2002-01-05 CN CN 02113205 patent/CN1233976C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1395079A (en) | 2003-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103468961B (en) | A kind of airtight cupola furnace process Steel Plant are containing zinc, lead powder dirt processing method | |
| CN108676942A (en) | The materials such as a kind of iron content and/or zinc lead bronze tin cooperate with processing recovery method with molten steel slag | |
| CN100507013C (en) | Method for directly producing ferrochromium from chrome ore powder and coal | |
| CN106191344A (en) | A kind of slag melting and reducing that mixes produces the method with modifier treatment | |
| CN106755654A (en) | A kind of method of slag metallurgy melting also original production | |
| CN101538629A (en) | Process and device for smelting chromium irons and chromium-containing molten iron by using chromium ore powder | |
| CN106048109A (en) | Method for mixed slag smelting reduction recycling and thermal refining | |
| CN101538634A (en) | Smelting process and device of pure iron | |
| CN110157846A (en) | A kind of method that steel scrap is added in the big proportion of blast furnace | |
| CN102586618B (en) | Process of smelting iron pyrite | |
| CN103526066B (en) | Continuous process for producing manganese-silicon alloy and slag rich in silicomanganese and producing micro-and low-carbon manganese-silicon alloy by utilization of slag rich in silicomanganese | |
| CN106282453A (en) | A kind of method of sefstromite blast furnace process | |
| CN103882181A (en) | Manganese-containing steel alloying process | |
| CN111961785B (en) | Method for producing ultra-pure pig iron by iron bath smelting reduction method | |
| US11746042B2 (en) | Method for synergistically preparing Ferrosilicon alloy and glass-ceramics from photovoltaic waste slag and non-ferrous metal smelting iron slag | |
| CN106755658A (en) | A kind of method of the metallurgical also original production of titanium-containing slag | |
| CN103334008A (en) | Smelting method and smelting device for acid mud treatment | |
| CN107488784A (en) | A kind of blast furnace ironmaking superfluxed pellets and its production method | |
| CN106480308A (en) | A kind of method reducing sintering solid burnup | |
| CN1233976C (en) | Blast furnace powder-spraying intensified smelting technology | |
| CN101956035A (en) | Iron-containing material slag bath smelting reduction steelmaking technical method and device | |
| CN1325672C (en) | Lead smelting method and apparatus implementing the same | |
| CN100436618C (en) | Fusing agent used under high temperature fused state | |
| CN1041328C (en) | Method of direct steel-smelting of cooled agglomerated pellet | |
| CN101338373B (en) | Method for producing smelting copper-cobalt oxidation ore by blast furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |