CN102676850A - Proportioning method for high-silicon and low-iron slag through volatile smelting of antimony smelting blast furnace - Google Patents
Proportioning method for high-silicon and low-iron slag through volatile smelting of antimony smelting blast furnace Download PDFInfo
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- CN102676850A CN102676850A CN2012101400996A CN201210140099A CN102676850A CN 102676850 A CN102676850 A CN 102676850A CN 2012101400996 A CN2012101400996 A CN 2012101400996A CN 201210140099 A CN201210140099 A CN 201210140099A CN 102676850 A CN102676850 A CN 102676850A
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- feo
- cao
- mgo
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Abstract
The invention discloses a proportioning method for high-silicon and low-iron slag through volatile smelting of an antimony smelting blast furnace. The proportioning method comprises the following steps of: defining contents of gangue components including SiO2, FeO, CaO, Al2O3 and MgO in charged materials through analysis; and adjusting the proportion of the SiO2, FeO, CaO, Al2O3 and MgO in the materials in the antimony smelting blast furnace under the condition of volatile smelting of the antimony smelting blast furnace, thereby keeping the mass percentage of the SiO2, FeO, CaO, Al2O3 and MgO in the materials in the antimony smelting blast furnace at (40-49):(18-26):(17-23):(5-12):(1-4), wherein the sum is 100. By utilizing the proportioning method, the antimony smelting production cost can be reduced, and the production capacity is improved.
Description
Technical field
The present invention relates to a kind of antimony and smelt blast furnace volatile smelting high silicon and low iron slag type distribution.
Background technology
Antimony is smelted blast furnace volatile smelting technology because its flexibility to material is strong, can realize mechanized operation, has become the basic production technology that China handles antimony ore at present.
It is to drop into coke earlier to produce high temperature that antimony is smelted blast furnace volatile smelting technology primary process; Drop into antimony ore and sludging flux iron ore again; Form with Antimony Trioxide: 99.5Min after the antimony oxidation in the antimony ore gets into flue gas, and the gangue content in antimony ore and the sludging flux slag making reaction takes place each other and gets into slag.The physicochemical property of slag has very big influence to the ordinary production of stibium blast furnace; The top temperature that can reach in the stove depends on the temperature of fusion of slag; And the height of the interior temperature of stove directly influences the throughput of stibium blast furnace; Influence separating of slag and antimony, influence separating of slag and antimony sulfonium, influence the antimony grade in the slag.The distribution of existing antimony metallurgical slag type is: with SiO
2, FeO, CaO, Al
2O
3, five kinds of oxide masses of MgO add up to 100% and calculate, the quality proportioning of five kinds of oxide compounds is SiO in the slag
2: FeO:CaO:Al
2O
3: MgO=40:30:20:8:2.According to this slag type batching, the silicate degree of slag is 1.26, density 3.5g/m
3, 950～1000 ℃ of fusing points.This slag type batching can guarantee the carrying out that produce, and still, because the sludging flux (iron ore) that adds is more, find that in production practice there is following shortcoming in this slag type batching: (1) production cost increases; (2) slag of output is too much, causes the antimony metal loss in the slag to increase, and reduces the recovery of antimony metal; (3) fuel (coke) consumption increases, and causes the input of condensation dust collecting system and processing cost to increase; (4) take the bed ability of blast furnace, cause the throughput of blast furnace to reduce; (5) owing to iron level in the slag type is higher, density is bigger, thereby influences the separating effect of antimony metal in the slag, and this also causes the loss of antimony metal to increase.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of and reduce production costs, the antimony smelting blast furnace volatile smelting high silicon and low iron slag type distribution of raising throughput.
The technical scheme that the present invention solves its technical problem employing is: a kind of antimony is smelted blast furnace volatile smelting high silicon and low iron slag type distribution, at first, through analyzing, clearly goes into gangue content SiO in the stove material
2, FeO, CaO, Al
2O
3, MgO content, then, smelt under the blast furnace volatile smelting condition at antimony, regulate antimony and smelt in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, the ratio between the MgO, make that getting into antimony smelts in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, MgO mass percent be (40～49): (18～26): (17～23): (5～12): (1～4) adds up to 100.
Further, said SiO
2, FeO, CaO, Al
2O
3, MgO mass percent be (45～48): (21～23): (19～21): (6～10): (2～3), more preferably 47:22:21:8:2.
Utilize antimony of the present invention to smelt blast furnace volatile smelting high silicon and low iron slag type distribution, the silicate degree of slag is 1.25～1.75, and fusing point is 1000 ℃～1100 ℃, density 3.1～3.4g/m
3
Compared with prior art; Antimony of the present invention is smelted blast furnace volatile smelting high silicon and low iron slag type distribution and had the following advantages: the flux (iron ore) that (1) adds can reduce significantly; The iron ore consumption rate drops to 20%～25% by original 38%, thereby can reduce production costs; (2) the slag rate can drop to 53% by original 70%, and the antimony metal that slag is taken away reduces, and the antimony metal recovery improves more than 1%; (3) the coke consumption rate drops to 25%～30% by original 36%～40%, not only can reduce energy consumption, and can also reduce the input and the processing cost of condensation dust collecting system; (4) can improve the throughput of blast furnace, the bed ability is by original 19t/m
2D is increased to 23t/m
2More than the d; (5) slag density reduces, and helps the separation of antimony metal in the slag.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1
The antimony of present embodiment is smelted blast furnace volatile smelting high silicon and low iron slag type distribution, at first, through analyzing antimony ore, coke and the sludging flux (iron ore) of stove, learns gangue content SiO in the stove material
2, FeO, CaO, Al
2O
3, MgO content, smelt under the blast furnace normal air volatile smelting condition at antimony then, regulate antimony and smelt in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, the ratio between the MgO, make that getting into antimony smelts in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, MgO mass percent be SiO
2: FeO:CaO:Al
2O
3: MgO=45:24:21:8:2.The silicate degree of gained slag is 1.51, and fusing point is 1000～1100 ℃, and density is 3.3 g/m
3The iron ore consumption rate drops to 25%, and the slag rate drops to 55%, and the antimony metal recovery improves 1%, and coke consumption drops to 30%, and the bed ability is increased to 23t/m
2D.
Embodiment 2
The antimony of present embodiment is smelted blast furnace volatile smelting high silicon and low iron slag type distribution, at first through analyzing antimony ore, coke and the sludging flux of stove, learns gangue content SiO in the stove material
2, FeO, CaO, Al
2O
3, MgO content, smelt under blast furnace oxygen-rich air (carrier of oxygen volume concentrations 30%) the volatile smelting condition at antimony then, regulate antimony and smelt in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, the ratio between the MgO, make that getting into antimony smelts in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, MgO mass percent be SiO
2: FeO:CaO:Al
2O
3: MgO=47:22:21:8:2.The silicate degree of gained slag is 1.62, and fusing point is 1000 ℃～1100 ℃, density 3.28g/m
3The iron ore consumption rate drops to 21%, and the slag rate drops to 53%, and the antimony metal recovery improves 1.2%, and coke consumption drops to 25%, and the bed ability is increased to 35t/m
2D.
Claims (3)
1. an antimony is smelted blast furnace volatile smelting high silicon and low iron slag type distribution, it is characterized in that: at first, through analyzing, clearly go into gangue content SiO in the stove material
2, FeO, CaO, Al
2O
3, MgO content, then, smelt under the blast furnace volatile smelting condition at antimony, regulate antimony and smelt in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, the ratio between the MgO, make that getting into antimony smelts in the blast furnace SiO in the material
2, FeO, CaO, Al
2O
3, MgO mass percent be (40～49): (18～26): (17～23): (5～12): (1～4) adds up to 100.
2. antimony according to claim 1 is smelted blast furnace volatile smelting high silicon and low iron slag type distribution, it is characterized in that: said SiO
2, FeO, CaO, Al
2O
3, MgO mass percent be (45～48): (21～23): (19～21): (6～10): (2～3).
3. antimony according to claim 2 is smelted blast furnace volatile smelting high silicon and low iron slag type distribution, it is characterized in that: said SiO
2, FeO, CaO, Al
2O
3, MgO mass percent be 47:22:21:8:2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101400996A CN102676850A (en) | 2012-05-09 | 2012-05-09 | Proportioning method for high-silicon and low-iron slag through volatile smelting of antimony smelting blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101400996A CN102676850A (en) | 2012-05-09 | 2012-05-09 | Proportioning method for high-silicon and low-iron slag through volatile smelting of antimony smelting blast furnace |
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|---|---|
| CN102676850A true CN102676850A (en) | 2012-09-19 |
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ID=46809394
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924100A (en) * | 2014-04-28 | 2014-07-16 | 锡矿山闪星锑业有限责任公司 | Method and device for producing crude antimony by smelting antimony oxide-containing material in smelting furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1029242C (en) * | 1991-11-29 | 1995-07-05 | 湖南省益阳锑品冶炼厂 | Smelting method for antimon-gold mine containing low ferrous sulfide (FeS) |
| CN1530453A (en) * | 2003-03-13 | 2004-09-22 | 湖南东港锑品有限公司 | Treatment of slag from smelting lead and antimony |
-
2012
- 2012-05-09 CN CN2012101400996A patent/CN102676850A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1029242C (en) * | 1991-11-29 | 1995-07-05 | 湖南省益阳锑品冶炼厂 | Smelting method for antimon-gold mine containing low ferrous sulfide (FeS) |
| CN1530453A (en) * | 2003-03-13 | 2004-09-22 | 湖南东港锑品有限公司 | Treatment of slag from smelting lead and antimony |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924100A (en) * | 2014-04-28 | 2014-07-16 | 锡矿山闪星锑业有限责任公司 | Method and device for producing crude antimony by smelting antimony oxide-containing material in smelting furnace |
| CN103924100B (en) * | 2014-04-28 | 2016-01-06 | 锡矿山闪星锑业有限责任公司 | A kind of method and device producing needle antimony containing weisspiessglanz material bath smelting |
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Application publication date: 20120919 |