CN109022791A - A method of directly blown low-grade oxidation lead zine ores with fuming furnace - Google Patents
A method of directly blown low-grade oxidation lead zine ores with fuming furnace Download PDFInfo
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- CN109022791A CN109022791A CN201811196129.9A CN201811196129A CN109022791A CN 109022791 A CN109022791 A CN 109022791A CN 201811196129 A CN201811196129 A CN 201811196129A CN 109022791 A CN109022791 A CN 109022791A
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- fuming furnace
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- oxidation lead
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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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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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
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
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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
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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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/34—Obtaining zinc oxide
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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
- C22B41/00—Obtaining germanium
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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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/16—Dry methods smelting of sulfides or formation of mattes with volatilisation or condensation of the metal being produced
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- 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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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of directly to be blown the methods of low-grade oxidation lead zine ores with fuming furnace, belongs to field of thermometallurgical technology, and the present invention directly blow oxidation lead zine ores using fuming furnace, and raw material can directly enter furnace without briquetting granulation；Smelting process removes drain time about 20min/ furnace, and to stop charging outer, can continuous production, treating capacity is big, and bed ability is high；It takes and hot material is stayed to operate, there are hot materials to provide heat source at the end of discharge, and low energy consumption, and the flue gas of generation has perfect recovery and processing system, and environment protecting is good；The present invention by controlling reasonable temperature and reducing atmosphere, can valuable metals, the waste residue such as lead zinc germanium silver effectively in enriching and recovering mineral be down to 2.5% hereinafter, leaded be down to 1% hereinafter, metal recovery rate is high containing zinc.The features such as present invention directly can effectively recycle valuable metal in raw ore, have simple process, and treating capacity is big, metal recovery rate is high, production cost is low, and environment protecting is good, great economic value, application value are high.
Description
Technical field
The invention belongs to field of thermometallurgical technology, specifically, are related to a kind of low-grade oxygen that directly blown with fuming furnace
Change the method for lead zine ores.
Background technique
Lead-zinc oxide ore generally will could smelt lead, zinc metal product at concentrate by beneficiation enrichment.But part oxygen
Change Pb-Zn deposits oxygenation efficiency up to 30% or more, material composition is especially complex, and existing a large amount of gypsum, copper sulphate, zinc sulfate etc. can
Soluble, the oxides such as carbonate, sulfate, silicate, arsenate, sulfide, and have generated in oxidation process it is a large amount of
Cinnamon soil, sardinianite, easily argillization keep flotation operation control difficult, and the rate of recovery is extremely low.For the lead-zinc of extremely difficult sorting, one
As take and melted in blast furnace after sintering or briquetting, to obtain lead bullion and leaded zinc molten slag, clinker is further in fuming
Furnace or rotary kiln fuming, obtain oxidized zinc products.The technology utilization blast furnace is produced, long flow path, energy consumption height, environmentally friendly hidden danger
Greatly, it has been put into and has fallen behind superseded technique.
In recent years, those skilled in the art have carried out numerous studies to the processing method of lead-zinc.Wherein, invention is special
Sharp " method of combined treatment of high calcium and magnesium low-grade oxidized lead zinc ore by means of concentration " (application number: 200910094204.5) discloses one kind
By NPT ammonia leached-Extraction electrodeposition-flotation of leached residue processing high calcium and magnesium low-grade lead-zinc technique, the technique stream
Journey is long, and step is complicated, and required reagent is more, and finally obtained is only concentrate, and to obtain product also needs to be further processed；Invention is special
Benefit " a kind of method of side-blown material-fuming blowing Combined Treatment material containing zinc " (application number: 201810231194.4) discloses
It is a kind of first to carry out material with side-blown converter, then blown with fuming furnace, obtain the two kind zinc oxide fumes high and low containing F, Cl, As
Lead zinc mineral intergrowth treatment process, the technique be directed to mainly the lead zinc mineral intergrowth containing F, Cl, As, with oxidation lead zine ores at
Phase-splitting difference is larger, and for fuming furnace, and processing still falls within lead-zinc smelting waste residue, and overall flow is longer.
Therefore, it is former to develop the low-grade lead oxide zinc of directly processing that a kind of process flow is simple, low energy consumption, environment protecting is good
The method of mine is very necessary.
Summary of the invention
In order to solve the problems, such as background technique, the present invention provides a kind of low-grade oxygen that directly blown with fuming furnace
Change the method for lead zine ores, process is simple, treating capacity is big, and low energy consumption, low cost, environment protecting are good, by controlling reasonable temperature
Degree and reducing atmosphere, can the valuable metals such as lead zinc germanium silver effectively in enriching and recovering mineral, waste residue containing zinc be down to 2.5% hereinafter,
Leaded to be down to 1% hereinafter, metal recovery rate is high, great economic value, application value is high.
To achieve the above object, the present invention is achieved through the following technical solutions:
The method of the low-grade oxidation lead zine ores that directly blown with fuming furnace, specifically includes step:
1) will oxidation lead zine ores by after belt-conveying to disk feeder with 6~8t/h be uniformly added into fuming furnace into
Row blowing；
2) mixture of fine coal and air is blown into fuming furnace, is controlled by adjusting coal-supplying amount and first and second air quantity
In-furnace temperature processed and atmosphere, continuous converting aoxidize lead zine ores；
3) control 3~4t/h of coal-supplying amount feeds 70~100min of temperature raising to 1200~1250 DEG C of in-furnace temperature, completes oxidation
The decomposition of carbonate, silicate and sulfate in the fusing of lead zine ores and raw ore；
4) raising coal-supplying amount is to 4~5t/h, 100~120min of reduction blowing at a temperature of 1100~1200 DEG C, completion lead,
Zinc is reduced into metal vapors volatilization from its oxide, and is oxidized again in the upper space of stove, in the form of flue dust
It is collected into dust collecting system；
5) melting waste slag for reaching blowing end point is discharged by cinder notch, and stockpiling or export trade after water quenching will drop during slagging
Low coal-supplying amount is to 1.5~2.5t/h；
6) it is emptied after tail gas is recycled through waste heat, gathered dust, sour method processing is up to standard.
Further, in step 1), oxidation lead zine ores are the ore without ore dressing or other process after exploitation,
Main component includes leaded 4%~10%, zinc 15~22%, germanium 20-50g/t, 50~80g/t of silver, sulphur 4%~10%, calcium
11%~20%, iron 8%~12%.
Further, in step 2), the main component of the fine coal includes containing charcoal 45%~55%, and sulfur-bearing 0.1%~
1%, ash content 20~35%, volatile matter 16~20%, -200 purpose of granularity accounts for 80% or more, and moisture content is less than 1%.
Further, in step 2), the coal-supplying amount accurately controls discharge quantity by locking wind constant feeder.
Further, in step 2), the first and second air quantity total amount is 280~400m3/min。
Further, in step 5), the blowing end point is to be observed by tertiary air orifice, is become clear in furnace, it can be seen that opposite side
Water jacket wall.
Further, in step 5), the waste residue main ingredient be it is leaded≤1%, contain zinc≤2.5%, iron content 17~
29%, siliceous 18~25%, calcic 8~14%.
Further, in step 5), the discharge terminates to stay 300~400mm of slag liquid level.
Beneficial effects of the present invention:
1, process is short, and treating capacity is big.The present invention is directly blown using fuming furnace aoxidizes lead zine ores, and raw material is not necessarily to briquetting system
Grain, can directly enter furnace；Smelting process removes drain time about 20min/ furnace, and to stop charging outer, can continuous production, treating capacity is big, bed
Ability is high.
2, low energy consumption, and environment protecting is good.The present invention, which takes, stays hot material to operate, and there are hot materials to provide heat source at the end of discharge,
Low energy consumption, and the flue gas of generation has perfect recovery and processing system, and environment protecting is good.
3, metal recovery rate is high.The present invention, can effective enriching and recovering mineral by controlling reasonable temperature and reducing atmosphere
In the valuable metals such as lead zinc germanium silver, waste residue is down to 2.5% hereinafter, leaded be down to 1% hereinafter, metal recovery rate is high containing zinc.
4, application value is high.The technique that lead zinc industry directlys adopt separate unit stove smelting raw ore at present has not been reported,
And part raw ore ore-dressing technique is complex, the present invention directly can effectively recycle valuable metal in raw ore, at low cost, great economy
Value, application value are high.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
It, below will be to preferred reality of the invention in order to keep the purpose of the present invention, technical scheme and beneficial effects clearer
It applies example to be described in detail, to facilitate the technical staff to understand.
Embodiment 1
By taking processing aoxidizes lead zine ores 150t as an example, ingredient is shown in Table 1.
Table 1 aoxidizes lead zine ores ingredient (%)
1) lead zine ores inlet amount 6.5t/h is aoxidized, 3.2~3.7t/h of coal, charging and heating 80min are given.
2) 1200 DEG C of strict temperature control in fusion process, first and second total blast volume is in 280~400m3/ min, reduction blowing
116min reacts burning of coal product sufficiently with melting mineral, and metallic vapour evaporates into upper space re-oxidation into lead zinc
Metal oxide passes through dust collecting system enriching and recovering in the form of flue dust.
3) when reaching smelting endpoint, waste residue is given off from cinder notch, opens slag flushing pump water quenching waste residue.
4) 15min is discharged, stays doses in 400mm, discharge terminates.
5) melting is recycled, starts to feed.
Technical indicator is shown in Table 2.
Table 2 aoxidizes lead concentrate oxygen-enriched top blowing furnace processing technique index
Embodiment 2
By taking processing aoxidizes lead zine ores 180t as an example, ingredient is shown in Table 3.
Table 3 aoxidizes lead zine ores ingredient (%)
1) lead zine ores inlet amount 7t/h is aoxidized, 3.5~4t/h of coal, charging and heating 85min are given.
2) 1200 DEG C of strict temperature control in fusion process, first and second total blast volume is in 280~400m3/ min, reduction blowing
120min reacts burning of coal product sufficiently with melting mineral, and metallic vapour evaporates into upper space re-oxidation into lead zinc
Metal oxide passes through dust collecting system enriching and recovering in the form of flue dust.
3) when reaching smelting endpoint, waste residue is given off from cinder notch, opens slag flushing pump water quenching waste residue.
4) 18min is discharged, stays doses in 380mm, discharge terminates.
5) melting is recycled, starts to feed.
Technical indicator is shown in Table 4.
Table 4 aoxidizes lead concentrate oxygen-enriched top blowing furnace processing technique index
The present invention by controlling reasonable temperature and reducing atmosphere, can the lead zinc germanium silver etc. effectively in enriching and recovering mineral have
Valence metal, waste residue are down to 2.5% hereinafter, leaded be down to 1% hereinafter, metal recovery rate is high containing zinc.Lead zinc industry is directly adopted at present
It is had not been reported with the technique that separate unit stove smelts raw ore, and part raw ore ore-dressing technique is complex, the present invention can directly effectively
Valuable metal in recycling raw ore, at low cost, great economic value, application value are high.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention rather than limits, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (8)
1. a kind of method for the low-grade oxidation lead zine ores that directly blown with fuming furnace, it is characterised in that: specifically include following step
It is rapid:
1) oxidation lead zine ores are blown by being uniformly added into fuming furnace after belt-conveying to disk feeder with 6~8t/h
Refining；
2) mixture of fine coal and air is blown into fuming furnace, controls furnace by adjusting coal-supplying amount and first and second air quantity
Interior temperature and atmosphere, continuous converting aoxidize lead zine ores；
3) control 3~4t/h of coal-supplying amount feeds 70~100min of temperature raising to 1200~1250 DEG C of in-furnace temperature, completes lead oxide zinc
The decomposition of carbonate, silicate and sulfate in the fusing of raw ore and raw ore；
4) improve coal-supplying amount to 4~5t/h, 100~120min of reduction blowing at a temperature of 1100~1200 DEG C, complete lead, zinc from
It is reduced into metal vapors volatilization in its oxide, and is oxidized again in the upper space of stove, is entered in the form of flue dust
Dust collecting system is collected；
5) reach the melting waste slag of blowing end point to discharge by cinder notch, stockpiling or export trade after water quenching, to be reduced during slagging to
Coal amount is to 1.5~2.5t/h；
6) it is emptied after tail gas is recycled through waste heat, gathered dust, sour method processing is up to standard.
2. a kind of method of low-grade oxidation lead zine ores that directly blown with fuming furnace according to claim 1, feature
Be: in step 1), oxidation lead zine ores are the ore without ore dressing or other process after exploitation, and main component includes
Leaded 4%~10%, zinc 15~22%, germanium 20-50g/t, 50~80g/t of silver, sulphur 4%~10%, calcium 11%~20%, iron 8%~12%.
3. a kind of method of low-grade oxidation lead zine ores that directly blown with fuming furnace according to claim 1, feature
Be: in step 2, the main component of the fine coal includes containing charcoal 45%~55%, and sulfur-bearing 0.1%~1%, ash content 20~35% is waved
Hair point 16~20%, -200 purpose of granularity accounts for 80% or more, and moisture content is less than 1%.
4. a kind of method of low-grade oxidation lead zine ores that directly blown with fuming furnace according to claim 1, feature
Be: in step 2, the coal-supplying amount accurately controls discharge quantity by locking wind constant feeder.
5. a kind of method of low-grade oxidation lead zine ores that directly blown with fuming furnace according to claim 1, feature
Be: in step 2, the first and second air quantity total amount is 280~400m3/min。
6. a kind of method of low-grade oxidation lead zine ores that directly blown with fuming furnace according to claim 1, feature
Be: in step 5), the blowing end point is to be observed by tertiary air orifice, is become clear in furnace, it can be seen that opposite side water jacket wall.
7. a kind of method of low-grade oxidation lead zine ores that directly blown with fuming furnace according to claim 1, feature
Be: in step 5), the waste residue main ingredient be it is leaded≤1%, contain zinc≤2.5%, iron content 17~29%, siliceous 18~25%,
Calcic 8~14%.
8. a kind of method of low-grade oxidation lead zine ores that directly blown with fuming furnace according to claim 1, feature
Be: in step 5), the discharge terminates to stay 300~400mm of slag liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196129.9A CN109022791A (en) | 2018-10-15 | 2018-10-15 | A method of directly blown low-grade oxidation lead zine ores with fuming furnace |
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| CN201811196129.9A CN109022791A (en) | 2018-10-15 | 2018-10-15 | A method of directly blown low-grade oxidation lead zine ores with fuming furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029232A (en) * | 2019-04-30 | 2019-07-19 | 云南驰宏锌锗股份有限公司 | A kind of method of low-grade lead Zinc oxide resource utilization |
| CN111850299A (en) * | 2020-06-09 | 2020-10-30 | 云南驰宏锌锗股份有限公司 | Method for treating zinc hydrometallurgy purification slag by fuming furnace |
| CN113604682A (en) * | 2021-07-01 | 2021-11-05 | 云南云铜锌业股份有限公司 | Method for recovering zinc oxide from low-grade lead-zinc oxide ore |
-
2018
- 2018-10-15 CN CN201811196129.9A patent/CN109022791A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 朱军等: "低品位氧化铅锌矿资源化利用的工业试验", 《中国有色冶金》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029232A (en) * | 2019-04-30 | 2019-07-19 | 云南驰宏锌锗股份有限公司 | A kind of method of low-grade lead Zinc oxide resource utilization |
| CN111850299A (en) * | 2020-06-09 | 2020-10-30 | 云南驰宏锌锗股份有限公司 | Method for treating zinc hydrometallurgy purification slag by fuming furnace |
| CN113604682A (en) * | 2021-07-01 | 2021-11-05 | 云南云铜锌业股份有限公司 | Method for recovering zinc oxide from low-grade lead-zinc oxide ore |
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