CN212006748U - Smelting furnace for continuously smelting crude tin and continuously fuming furnace slag by tin concentrate - Google Patents
Smelting furnace for continuously smelting crude tin and continuously fuming furnace slag by tin concentrate Download PDFInfo
- Publication number
- CN212006748U CN212006748U CN202020551909.7U CN202020551909U CN212006748U CN 212006748 U CN212006748 U CN 212006748U CN 202020551909 U CN202020551909 U CN 202020551909U CN 212006748 U CN212006748 U CN 212006748U
- Authority
- CN
- China
- Prior art keywords
- furnace
- smelting
- tin
- furnace body
- blown
- 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.)
- Active
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The smelting furnace for continuously smelting crude tin and continuously fuming slag by using tin concentrate comprises a front-end top-blown smelting furnace and a rear-end side-blown fuming depletion furnace, wherein the bottoms of the front-end top-blown smelting furnace and the rear-end side-blown fuming depletion furnace are communicated; the front-end top-blown smelting furnace comprises a cylindrical furnace body (4), a material inlet (1) at the top of the furnace, a smelting spray gun (3) inserted from the top of the furnace, a smelting flue gas outlet (5) arranged at the top of the furnace and a crude tin discharging outlet (10) arranged at the bottom of the furnace body; the side-blown fuming and depleting furnace comprises a rectangular box-type furnace body (18), a vulcanizing agent feeding port (20) at the top of the furnace, blowing systems (14) which are symmetrically arranged at two sides of the lower part of the furnace body and blow air and fuel into the furnace, a depleted slag discharging port (15) arranged at the lower part of the furnace body and a fuming flue gas outlet (19) arranged at the top of the furnace body; the bottom of the rectangular box-type furnace body is an inclined bottom (12). The utility model discloses can have one step of tin concentrate and smelt into crude tin and smelt two metallurgical processes of depleting of rich tin cinder continuous vulcanization method in succession, the flow is short, and the operating cost is low, and the rate of recovery of tin is high, and is energy-conserving effectual.
Description
Technical Field
The utility model relates to a non ferrous metal metallurgical equipment technical field, concretely relates to equipment is leaned in pyrometallurgical and rich tin cinder fuming of tin concentrate.
Background
The method for producing crude tin by smelting tin concentrate is generally divided into two main smelting production process steps, wherein the first step is to smelt the tin concentrate into crude tin and tin-rich slag, and the second step is to smoke the tin-rich slag, dilute and recover tin and produce lean slag.
The traditional tin smelting process adopts a blast furnace, a reverberatory furnace, an electric furnace and the like to smelt tin concentrate to produce crude tin and simultaneously produce tin-rich slag. The smelting furnace tin-rich slag is additionally subjected to fuming, dilution and recovery of tin smoke dust by a side-blown fuming furnace and the like. Blast furnace smelting belongs to the backward productivity and is basically eliminated at present. The reverberatory furnace and the electric furnace are still the most used tin concentrate smelting equipment at present, and are characterized by simple process method, small scale, high energy consumption, high labor intensity, multiple production links, serious environmental pollution and high safety risk.
In recent 20 years, the strengthening smelting of tin concentrate has been greatly advanced, and the tin smelting efficiency is greatly improved by adding tin smelting and oxygen enrichment in an Ausmelt top-blown furnace. The Ausmelt top-blown immersion smelting method belongs to the field of molten pool smelting, is widely used for smelting copper, tin, lead, steel and the like, and develops rapidly in recent 20 years. The top-blown immersion smelting method has the advantages of high smelting concentration, good furnace body sealing performance, good workshop environment-friendly condition, simple structure, simple material preparation, relatively low investment and the like. However, the method has the defects that the slag produced by smelting needs to be treated separately by a fuming furnace, the production links are multiple, the process and the facility are complex, the discontinuous operation is realized, the production efficiency is low, the energy consumption is high, and the tin recovery rate is low.
At present, tin-rich slag in tin smelting is mainly fuming, volatilizing, diluting and recovering tin smoke dust by a vulcanization method of a box-type side-blown fuming furnace. The box type side-blown fuming furnace is also growing in size, from the past 2.6m2The furnace type is mainly developed to 4m2The furnace type is the main one, and some manufacturers have tried to adopt 8m2Oven type boxFormula side-blown fuming furnace. The box type side-blown fuming furnace has the main advantages of high volatilization efficiency and high speed of tin. But the main disadvantages are intermittent operation, intermittent addition of slag generated by the smelting furnace, long flow, complex operation, high safety and environmental protection risks and high energy consumption, and the processes of cooling, conveying, heating and the like exist.
The equipment and the method have the common problems of complex equipment, small scale, large total investment and complex process, namely the processes of smelting the tin concentrate into crude tin and tin-rich furnace slag and fuming the tin-rich furnace slag are discontinuous, the smelting of the tin concentrate and the fuming and dilution of the furnace slag can be completed through multiple steps, the processes of cooling, conveying, adding in a fuming furnace, heating and the like of the tin-rich furnace slag are needed between the smelting process and the fuming process, the production links are multiple, the process and the facility are complex, the discontinuous operation is realized, the consumed time is long, the production efficiency is low, the energy consumption is high, the recovery rate of tin metal is low, the labor intensity is high, and the risks of safety and environmental pollution are high.
Disclosure of Invention
The utility model aims at solving the problem that above-mentioned prior art exists, provide one kind and can accomplish in succession and smelt the tin concentrate for crude tin and rich tin slag fuming and impound two metallurgical processes, and equipment structure and operation simple process, tin metal rate of recovery height, energy consumption low, environmental protection, safe tin concentrate smelt the smelting furnace of crude tin and the continuous fuming of slag in succession.
The purpose of the utility model is realized through the following technical scheme:
a smelting furnace for continuously smelting crude tin and continuously fuming slag in tin concentrate is an integrated smelting furnace with front-end top-blown smelting and rear-end side-blown fuming, and comprises a front-end top-blown smelting furnace and a rear-end side-blown fuming depletion furnace which are communicated with each other at the bottom; the front-end top-blown smelting furnace comprises a cylindrical furnace body, a material inlet arranged at the top of the cylindrical furnace body, a smelting spray gun inserted into a hearth from the top of the cylindrical furnace body, a smelting flue gas outlet arranged at the top of the cylindrical furnace body, and a crude tin discharging outlet arranged at the bottom of the cylindrical furnace body; the side-blown fuming dilution furnace comprises a cuboid box-type furnace body, a vulcanizing agent feeding port arranged at the top of the cuboid box-type furnace body, blowing systems symmetrically arranged at two sides of the lower part of the cuboid box-type furnace body and used for blowing air and fuel into a lean slag layer in the furnace, a lean slag discharging port arranged at the lower part of the cuboid box-type furnace body and a fuming flue gas outlet arranged at the top of the cuboid box-type furnace body; the lower part of the hearth of the cylindrical furnace body of the front-end top-blown smelting furnace is communicated with the bottom of the hearth of the rectangular box-type furnace body of the side-blown fuming dilution furnace, and the bottom of the rectangular box-type furnace body is an inclined bottom which inclines downwards towards the cylindrical furnace body.
Furthermore, the inclined furnace bottom position of the cuboid box-type furnace body is higher than that of the cylindrical furnace body.
The utility model discloses can be in same smelting furnace in succession with tin concentrate reduction smelting become crude tin and rich tin slag to will smelt rich tin slag and carry out continuous fuming and impound the recovery tin smoke and dust and emit poor slag in succession. The utility model has the main advantages that:
(1) the utility model discloses only need to accomplish tin concentrate reduction smelting into crude tin continuously with a metallurgical stove, and two metallurgical processes are impoverished in the continuous fuming of slag, can one step smelt out the high quality crude tin that tin-bearing is greater than 90% in succession, and make tin-bearing about 5% about tin smelt rich tin slag direct flow and smoke in succession and impoverish, output tin-bearing is greater than 45% rich tin smoke and dust and tin-bearing and is less than 0.2% poor slag, the crude tin that liquid slag subsides in the stove and the reduction produced among the fuming process is remitted and is smelted the crude tin layer and obtain abundant recovery, the rate of recovery of tin is high.
(2) The utility model discloses saved smelting furnace slag cooling, transported, fuming furnace add, process such as intensification, the production link is few, and the operating cost is low, and the safety risk is little, and it obtains make full use of to smelt rich tin slag heat, and the flue gas waste heat obtains make full use of, and the energy consumption is low, and is energy-conserving effectual.
(3) The utility model discloses SO in the system2The concentration fluctuation is small, and the tail gas passes through low-concentration SO2After absorption (desorption), continuous and stable acid and SO preparation can be realized2The utilization rate of the tail gas is more than 98 percent, the environmental protection condition is good, and the final tail gas is discharged up to the standard.
(4) The utility model discloses equipment is simple reliable, low in manufacturing cost. The raw materials are simple to prepare, the fuming part does not need to prepare the raw materials additionally, the production cost can be greatly reduced, and the product quality is improved.
Drawings
FIG. 1 is a schematic view of a smelting furnace according to the present invention;
FIG. 2 is a right side view of FIG. 1;
fig. 3 is a top view of fig. 1.
In the figure: 1-material inlet, 2-smelting material, 3-smelting spray gun, 4-cylindrical furnace body, 5-smelting flue gas outlet, 6-reduction smelting layer, 7-separating furnace wall, 8-tin-rich slag layer, 9-crude tin layer, 10-crude tin discharging port, 11-integral furnace bottom, 12-inclined furnace bottom, 13-smelting furnace outer wall, 14-blowing system, 15-poor furnace slag discharging port, 16-poor furnace slag layer, 17-vulcanizing agent, 18-cuboid box-type furnace body, 19-fuming flue gas outlet, 20-vulcanizing agent feeding port, 21-air coal bunker and 22-compressed air pipe.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, the smelting furnace for continuously smelting crude tin and continuously fuming slag from tin concentrate is an integrated smelting furnace with front-end top-blown smelting and rear-end side-blown fuming, the furnace bottom of the integrated smelting furnace is an integrated furnace bottom 11, and an outer wall 13 of the smelting furnace is built on the integrated furnace bottom 11. The integrated metallurgical furnace comprises a front end top-blown smelting furnace and a rear end side smoke-blowing depletion furnace which are communicated with each other at the bottom.
The front end top-blown smelting furnace comprises a cylindrical furnace body 4, a material inlet 1 arranged at the top of the cylindrical furnace body, a smelting spray gun 3 inserted into a hearth from the top of the cylindrical furnace body, a smelting flue gas outlet 5 arranged at the top of the cylindrical furnace body, and a crude tin discharging port 10 arranged at the bottom of the cylindrical furnace body.
The side-blown fuming dilution furnace comprises a rectangular box-type furnace body 18, a vulcanizing agent feeding port 20 arranged at the top of the rectangular box-type furnace body, a blowing system 14 which is arranged at two sides of the lower part of the rectangular box-type furnace body and blows air and fuel into a lean slag layer 16 in the furnace relatively, a lean slag discharging port 15 arranged at the lower part of the rectangular box-type furnace body, and a fuming flue gas outlet 19 arranged at the top of the rectangular box-type furnace body. The injection system integrates an air coal bunker 21 for storing fuel and a compression air pipe 22. The cuboid box-type furnace body is convenient for furnace body masonry and maintenance.
The lower part of the hearth of the cylindrical furnace body 4 of the front-end top-blown smelting furnace is communicated with the bottom of the hearth of the rectangular box-type furnace body 18 of the side-blown smoke dilution furnace, and the bottom of the rectangular box-type furnace body is an inclined bottom 12 which inclines downwards towards the cylindrical furnace body. The inclined furnace bottom 12 of the cuboid box-type furnace body is higher than the furnace bottom of the cylindrical furnace body. The cylindrical furnace body 4 and the upper part of the cuboid box-type furnace body 18 are separated by a separating furnace wall 7.
Adopt the utility model discloses, no longer need be through the smelting furnace discontinuously smelt the tin concentrate, play crude tin and smelt rich tin slag discontinuously, transport the rich tin slag of smelting to the fuming furnace and smoke intermittently and emit lean slag again, but smelt in same smelting furnace smelting area in succession with tin concentrate reduction smelting become crude tin and rich tin slag, smelt rich tin slag natural flow to smoke the reaction area and carry out continuous fuming and barren slag, retrieve the tin smoke and dust and emit lean slag in succession. The specific process is as follows: smelting materials 2 such as tin concentrate, reducing agent and fusing agent are continuously added to the position of a reduction smelting layer 6 of a smelting area in a hearth from a material inlet 1 of a front-end top-blown smelting furnace, fuel, oxygen and compressed air are sprayed into the reduction smelting layer 6 through a smelting spray gun 3, and the melt is stirred to realize the reduction smelting of the tin concentrate. And after reduction smelting, the tin oxide in the tin concentrate is reduced into crude tin, the crude tin is settled at the bottom of the hearth to form a crude tin layer 9, and the crude tin layer is discharged from the top-blown smelting furnace through a crude tin discharging port 10. Containing low concentration of SO2The smelting flue gas is discharged from a smelting flue gas outlet 5, and after the waste heat is recovered by a waste heat system and the tin dioxide smoke dust is recovered by a dust collecting system, the smelting flue gas contains low-concentration SO2The tail gas is sent to an acid preparation system to prepare sulfuric acid. High-temperature liquid tin-rich slag generated by smelting floats on the crude tin layer 9 to form a tin-rich slag layer 8, automatically flows into the side-blown fuming depletion furnace through a channel between the lower part of the hearth of the cylindrical furnace body 4 and the bottom of the hearth of the rectangular box-type furnace body 18, and forms a depleted slag layer 16 at the bottom of the side-blown fuming depletion furnace. A vulcanizing agent 17 is added into the fuming and diluting furnace from a vulcanizing agent adding port 20, mixed with the lean slag and mixed with air and fuel blown from the blowing systems 14 at the two sides of the lower part of the rectangular box-type furnace bodyCarrying out fuming reaction by a sulfuration method, reducing the high-temperature liquid tin-rich slag, and allowing the reduced metal tin separated from the liquid slag by settling to flow to a crude tin layer 9 at the bottom of the cylindrical furnace body 4 along an inclined furnace bottom 12 of the rectangular box-type furnace body and collect. The tin-containing flue gas generated by the fuming reaction is discharged out of the furnace through a fuming flue gas outlet 19, and after the residual heat is recovered, the smoke is oxidized and the tin smoke is recovered, the low-concentration SO is contained2The tail gas is exchanged to an acid preparing system to prepare the sulfuric acid. The fuming lean tin slag is continuously discharged out of the furnace through a lean slag discharge port 15. The bottom of the cuboid box-type furnace body is arranged to be inclined, the position of the inclined bottom 12 is higher than that of the cylindrical furnace body, a high-temperature liquid tin-rich slag layer 8 generated by smelting of the front-end top-blown smelting furnace can automatically flow into the side-blown fuming and depleting furnace, and metal tin settled and separated from liquid slag after reduction of the side-blown fuming and depleting furnace can automatically flow back to the bottom of the front-end top-blown smelting furnace to be discharged.
The utility model discloses only need just can accomplish tin concentrate reduction smelting into crude tin with a metallurgical stove in succession to and the continuous fuming of slag imports two metallurgical processes, smelt out high-quality crude tin in one step in succession, and make tin smelting slag direct flow smoke in succession imports, saved the smelting furnace slag cooling, transported, fuming furnace adds, process such as intensification, and the production link is few, and the operating cost is low. The crude tin generated by the reduction of the liquid slag in the process of sedimentation and fuming in the furnace is fully recovered, and the recovery rate of the tin is high; the heat of the smelting tin-rich furnace slag is fully utilized, and the energy-saving effect is good.
Claims (2)
1. The smelting furnace is characterized in that the smelting furnace is an integrated smelting furnace with front end top-blown smelting and rear end side-blown fuming, and comprises a front end top-blown smelting furnace and a rear end side-blown fuming depletion furnace, wherein the bottom of the front end top-blown smelting furnace is communicated with the bottom of the rear end side-blown fuming depletion furnace; the front-end top-blown smelting furnace comprises a cylindrical furnace body (4), a material inlet (1) arranged at the top of the cylindrical furnace body, a smelting spray gun (3) inserted into a hearth from the top of the cylindrical furnace body, a smelting flue gas outlet (5) arranged at the top of the cylindrical furnace body, and a crude tin discharging outlet (10) arranged at the bottom of the cylindrical furnace body; the side-blown fuming and depleting furnace comprises a rectangular box-type furnace body (18), a vulcanizing agent feeding port (20) arranged at the top of the rectangular box-type furnace body, blowing systems (14) which are arranged at two sides of the lower part of the rectangular box-type furnace body and blow air and fuel into a lean slag layer (16) in the furnace, a lean slag discharging port (15) arranged at the lower part of the rectangular box-type furnace body and a fuming flue gas outlet (19) arranged at the top of the rectangular box-type furnace body; the lower part of a hearth of a cylindrical furnace body (4) of the front-end top-blown smelting furnace is communicated with the bottom of a hearth of a rectangular box-type furnace body (18) of the side-blown smoke reduction dilution furnace, and the bottom of the rectangular box-type furnace body is an inclined bottom (12) which inclines downwards towards the cylindrical furnace body.
2. A smelting furnace for the continuous smelting of raw tin and continuous fuming of slag from tin concentrate as recited in claim 1, characterized in that the inclined hearth (12) of the rectangular parallelepiped box-type furnace body is located higher than the hearth of the cylindrical furnace body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020551909.7U CN212006748U (en) | 2020-04-15 | 2020-04-15 | Smelting furnace for continuously smelting crude tin and continuously fuming furnace slag by tin concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020551909.7U CN212006748U (en) | 2020-04-15 | 2020-04-15 | Smelting furnace for continuously smelting crude tin and continuously fuming furnace slag by tin concentrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212006748U true CN212006748U (en) | 2020-11-24 |
Family
ID=73413310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020551909.7U Active CN212006748U (en) | 2020-04-15 | 2020-04-15 | Smelting furnace for continuously smelting crude tin and continuously fuming furnace slag by tin concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212006748U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322869A (en) * | 2020-04-15 | 2020-06-23 | 云南锡业股份有限公司铜业分公司 | Smelting furnace and smelting method for continuous smelting of crude tin from tin concentrate and continuous fuming of slag |
-
2020
- 2020-04-15 CN CN202020551909.7U patent/CN212006748U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322869A (en) * | 2020-04-15 | 2020-06-23 | 云南锡业股份有限公司铜业分公司 | Smelting furnace and smelting method for continuous smelting of crude tin from tin concentrate and continuous fuming of slag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103740945B (en) | A kind of method of enriching and recovering cadmium from plumbous smelting system | |
| CN103993176B (en) | Oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill | |
| CN110129583B (en) | Fire zinc smelting system | |
| CN101871725B (en) | Horizontal bottom blowing type molten pool desulphurizing furnace and oxidative desulphurization method for leaded materials | |
| CN208250387U (en) | Copper weld pool slag for comprehensive recyclable device | |
| CN101705367A (en) | Copper nickel smelting process with oxygen-enriched side-blowing bath smelting method | |
| CN106521189A (en) | Oxygen-enriched molten pool antimony refining production process | |
| CN104894380B (en) | The directed melting process for cleanly preparing of a kind of closed oxygen-enriched sub-pressure high-efficient smelting furnace | |
| CN103993183B (en) | Oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refines plumbous equipment | |
| CN111322869A (en) | Smelting furnace and smelting method for continuous smelting of crude tin from tin concentrate and continuous fuming of slag | |
| CN212253654U (en) | Integrated pyrometallurgical furnace | |
| CN106591592A (en) | Rich metallurgy smelting furnace and treatment process for treating polymetallic complex auricupride | |
| CN104946899B (en) | Edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method | |
| CN101899580A (en) | Zinc concentrate smelting equipment | |
| WO2018228073A1 (en) | Anode copper production method and device | |
| CN109385521B (en) | Production process for lead-antimony mixed ore oxygen-enriched molten pool low-temperature oxidation smelting | |
| CN212006748U (en) | Smelting furnace for continuously smelting crude tin and continuously fuming furnace slag by tin concentrate | |
| CN114525410B (en) | Process for recycling low-grade valuable metals from ash of metal smelting | |
| CN108456775B (en) | Method for treating zinc-containing material by combining side blowing melting and fuming blowing | |
| CN212199376U (en) | System for efficiently recovering valuable metals in tin secondary raw materials | |
| CN104611574A (en) | Method for refining scrap copper | |
| CN104862483A (en) | Method for disposing secondary lead materials by high oxygen-enriched side-blown bath smelting combination acid-making system | |
| CN1325672C (en) | Lead smelting method and apparatus implementing the same | |
| CN101886183B (en) | Lead smelting device and lead smelting method using same | |
| CN201793692U (en) | Zinc concentrate smelting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |