CN108384946A - A kind of leaded secondary material balling technique - Google Patents
A kind of leaded secondary material balling technique Download PDFInfo
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- CN108384946A CN108384946A CN201810218964.1A CN201810218964A CN108384946A CN 108384946 A CN108384946 A CN 108384946A CN 201810218964 A CN201810218964 A CN 201810218964A CN 108384946 A CN108384946 A CN 108384946A
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- secondary material
- pelletizing
- leaded
- leaded secondary
- iron powder
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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Abstract
The invention belongs to metallurgical technology fields, specifically disclose a kind of leaded secondary material balling technique.It according to quality proportioning is 100 that the technique, which includes by leaded secondary material and acid material, reproducibility iron powder,:30~60:10~60 mixing, mixture cure naturally through disk pelletizing or briquetting, obtain pelletizing, it is 5~7 times that pelletizing falls to the not broken number of steel plate in 2~5 meters of distances.Pelletizing method provided by the invention can effectively improve pellet strength and avoid direct airborne dust when group's ball enters stove melting, reduce secondary smoke, improve metal recovery rate, reduce energy consumption, save cost of disposal.The reduction of fume amount, also consequently reduces uncontrollable discharge, and environmental protection preferably realizes clean manufacturing.The metal for the reproducibility iron powder that this kind of synthetical recovery contains non-ferrous metal silver simultaneously also obtains resource utilization.
Description
Technical field
The invention belongs to metallurgical technology fields, are related to a kind of leaded secondary material balling technique.
Background technology
In Lead-Zinc Sintering Process, there is 10% or so secondary material to generate, mainly leaded equal heavy metals, belongs to dangerous solid
Body.When leaded secondary material recycles again, briquetting or granulation melting, the intensity of particle is directly affected to be generated in fusion process
Fume amount.Simple dispensing only is carried out to leaded secondary material in the prior art, then granulation carries out melting, but due to secondary object
Material leads to the insufficient strength of particle containing volume of smoke and leached mud etc., into when stove melting when drum air and oxygen, also
Do not start to participate in chemical reaction just airborne dust enters flue gas at once, reach when the secondary smoke of generation is high material 20~
30%, the serious waste energy and place capacity.
Invention content
Technical problem to be solved by the invention is to provide a kind of leaded secondary material balling technique, which can effectively carry
High secondary material granulation intensity, reduces the fume amount that secondary material generates in fusion process, improves metal recovery rate.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
The leaded secondary material balling technique, including leaded secondary material and acid material, reproducibility iron powder are mixed,
Mixture cures through disk pelletizing or briquetting, obtains pelletizing naturally.
Wherein, in above-mentioned leaded secondary material balling technique, the leaded secondary material and acid material, reproducibility iron powder
Quality proportioning when mixing is 100:30~60:10~60.
Preferably, quality proportioning when the leaded secondary material and acid material, reproducibility iron powder mix is 100:40
~50:30~50.
Wherein, in above-mentioned leaded secondary material balling technique, the acidity material is sulfuric acid leaching slag or smelting process
The sour mud of middle generation.
Wherein, in above-mentioned leaded secondary material balling technique, the moisture of the mixture is between 10~20wt%；It is preferred that
Between 15~20wt%.
Wherein, in above-mentioned leaded secondary material balling technique, the time cured naturally is 2~3 days.
Wherein, in above-mentioned leaded secondary material balling technique, after the curing naturally, pelletizing moisture is between 3~10%.
Wherein, in above-mentioned leaded secondary material balling technique, the pelletizing falls to steel plate in 2~5 meters of distances and is not crushed
Number is 5~7 times.
Wherein, in above-mentioned leaded secondary material balling technique, the source of the reproducibility iron powder is the argentiferous of magnetic separation recovery
Reproducibility iron powder.
Compared with prior art, the beneficial effects of the invention are as follows：Pelletizing method provided by the invention can effectively improve pelletizing
Intensity directly reduces secondary smoke (flue dust of melting reduces 5~10%), improves metal recovery rate, energy consumption is reduced, at saving
It is set to this (to handle the production line computation of 150,000 tons of materials year, the economic benefit that year generates is 7,500,000 or more).Fume amount subtracts
It is few, uncontrollable discharge is also consequently reduced, environmental protection preferably realizes clean manufacturing.This kind of synthetical recovery contains simultaneously
The metal of the reproducibility iron powder of non-ferrous metal silver also obtains resource utilization.
Description of the drawings
Fig. 1 is the flow diagram of 1 leaded secondary material balling technique of the embodiment of the present invention.
Specific implementation mode
The present invention provides a kind of leaded secondary material balling technique, it is strong which can effectively improve secondary material granulation
Degree reduces the fume amount that secondary material generates in fusion process, improves metal recovery rate.
The leaded secondary material balling technique, including by leaded secondary material and acid material, reproducibility iron powder according to
Quality proportioning 100:30~60:10~60 are uniformly mixed, control mixture moisture between 10~20wt%, through disk pelletizing or
Briquetting, since sour mud, lead mud etc. contain a small amount of acid, with reproducibility iron powder after 1000~3000KN pressurizes or pelletizes, quickly
It carries out oxidation reaction and generates a large amount of heat in oxidation process, since in the uniform mixture grain of iron powder and agglomerate, iron powder oozes
Thoroughly soft in acid material, iron powder can quickly oxidation heat liberation be dried, and cure 2~3 days naturally, obtain moisture in 3~10wt%
Between pelletizing, it is 5~7 times that pelletizing falls to the not broken number of steel plate in 2~5 meters of distances.
Preferably, quality proportioning when the leaded secondary material and acid material, reproducibility iron powder mix is 100:40
~50:30~50.
Wherein, in above-mentioned leaded secondary material balling technique, the acidity material is sulfuric acid leaching slag (lead mud) or smelting
Refine the sour mud generated in the process.
Preferably, in above-mentioned leaded secondary material balling technique, the moisture of the mixture is between 15~20wt%.
Wherein, in above-mentioned leaded secondary material balling technique, the source of the reproducibility iron powder is the argentiferous of magnetic separation recovery
Reproducibility iron powder.In reduced iron oxidation process, gap is will produce, is added in smelting furnace, reducing gas can be penetrated into so that reaction
It is easier to make for, in fusion process, the secondary fume dust quantity than commonly pelletizing greatly reduces the pelletizing of this High-strength air-permeable.
Argentiferous iron powder is in fusion process, and iron participates in melting slag making as flux, and silver obtains synthetical recovery then by trappings such as lead bronzes,
Realize that metal recycles comprehensively.
Present invention process principle：It is compared under iron powder and normality, it is easier to aoxidize and release a large amount of anti-in acid medium
It answers heat, forms iron oxide and be connected with each other, it is hardened to roll into a ball ball, a large amount of reaction heat so that group's ball temperature increases, and rolls into a ball the urgency of ball temperature
Rising can promote rapid reaction to carry out in turn again, detect in practice, and central temperature can reach 300~500 DEG C, it is similar will
Group's ball low-temperature sintering, is promoted the moisture rapid evaporation of ball, is conducive to the dehydration of agglomerate, the group's of improving ball drying efficiency, section
Save the energy consumption of moisture drying.
Fe+2H+=2Fe2++ heat
2Fe2++3O2=2Fe2O3+ big calorimetric
4Fe+3O2=2Fe2O3+ big calorimetric
The present invention mixes reproducibility containing iron powder and the secondary material of low in acidity, and after pelletizing placement, the flue dust of melting subtracts
Lack 5~10%, energy consumption and cost all reduce, and metal direct yield also greatly improves, while this kind of synthetical recovery contains coloured gold
The metal of the reproducibility iron powder of category also obtains resource utilization simultaneously.
The present invention is made further explanation and description below in conjunction with specific embodiment, but is not intended to limit the present invention
Protection domain.
Embodiment 1
Leaded secondary material balling technique, including (material component includes by leaded secondary material：Pb 30.6wt%, Bi
1.2wt%, Sb 0.8wt%, Ag 0.05g/t, Cu 1.9wt%, Sn 0.6wt%, S 3.1wt%, Fe 6.9wt%, SiO2
36.8wt%, CaO 5.8wt%) and smelting process in the sour mud that generates (component includes：Pb 16.2wt%, Bi 0.2wt%, S
3.1wt%, Fe 6.9wt%, SiO217.2wt%, CaO 25.1wt%), (component includes reproducibility iron powder：Fe
62.2wt%, SiO25.2wt%, CaO 6.3wt%) according to quality proportioning 100:30:60 are uniformly mixed, and control mixture water
Point in 10wt%, through disk pelletizing or briquetting, curing 2 days naturally obtain moisture in the pelletizing of 4wt%, and pelletizing falls in 3 meters of distances
It is 5 times to fall on the not broken number of steel plate.
Embodiment 2
Leaded secondary material balling technique, including (material component includes by leaded secondary material：Pb 28.83wt%, Bi
3.25wt%, Sb 1.1wt%, Ag 0.02g/t, Cu 3.8wt%, Sn 1.2wt%, S 2.83wt%, Fe 5.77wt%,
SiO230.7wt%, CaO 6.24wt%) and sulfuric acid leaching slag (component includes：Pb 20.63wt%, Bi 2.1wt%, S
4.1wt%, Fe 3.65wt%, SiO212.03wt%, CaO 8.63wt%), the argentiferous reproducibility iron powder (group of magnetic separation recovery
Divide and includes：Fe 50.66wt%, SiO23.18wt%, CaO 2.51wt%, Pb 2.1wt%, Ag 0.05g/t, Cu
0.2wt%, S 1.5wt%) according to quality proportioning 100:40:50 are uniformly mixed, and control mixture moisture is in 12wt%, through disk
Granulation or briquetting cure 3 days naturally, obtain moisture in the pelletizing of 6wt%, it is not broken secondary that pelletizing in 3 meters of distances falls to steel plate
Number is 5 times.
Embodiment 3
Leaded secondary material balling technique, including (material component includes by leaded secondary material：Pb 42.1wt%, S
3.78wt%, Fe 2.1wt%, SiO210.1wt%, CaO 2.52wt%) and sulfuric acid leaching slag (component includes：Pb
22.60wt%, S 6.22wt%, Fe 0.38wt%, SiO26.21wt%, CaO 2.52wt%), the argentiferous of magnetic separation recovery also
(component includes originality iron powder：Fe 55.02wt%, SiO22.86wt%, CaO 1.89wt%, Pb 1.86wt%, Ag
0.066g/t, S 1.5wt%) according to quality proportioning 100:60:60 are uniformly mixed, and control mixture moisture is in 20wt%, through circle
Disk is pelletized or briquetting, naturally curing 3 days, obtains moisture in the pelletizing of 5wt%, pelletizing falls to steel plate in 2 meters of distances and be not crushed
Number is 7 times.
Embodiment 4
Leaded secondary material balling technique, including (material component includes by leaded secondary material：Pb 29.21wt%, Bi
1.16wt%, Sb 0.68wt%, Ag 0.06g/t, Cu 1.25wt%, S 6.15wt%, Fe 8.31wt%, SiO2
26.39wt%, CaO 3.68wt%) and smelting process in the sour mud that generates (component includes：Pb 26.10wt%, S
3.45wt%, Fe 1.32wt%, SiO28.35wt%, CaO 9.68wt%), (component includes reproducibility iron powder：Fe
62.2wt%, SiO25.2wt%, CaO 6.3wt%) according to quality proportioning 100:50:30 are uniformly mixed, and control mixture water
Point in 10wt%, through disk pelletizing or briquetting, curing 2 days naturally obtain moisture in the pelletizing of 4wt%, and pelletizing falls in 3 meters of distances
It is 5 times to fall on the not broken number of steel plate.
Comparative example 1
Leaded secondary material balling technique, including (material component includes by leaded secondary material：Pb 29.21wt%, Bi
1.16wt%, Sb 0.68wt%, Ag 0.06g/t, Cu 1.25wt%, S 6.15wt%, Fe 8.31wt%, SiO2
26.39wt%, CaO 3.68wt%) it is uniformly mixed, control mixture moisture is in 10wt%, through disk pelletizing or briquetting, nature
Curing 2 days obtains moisture in the pelletizing of 6.2wt%, and pelletizing falls to steel plate in 3 meters of distances and can crush.
Comparative example 2
Leaded secondary material balling technique, including (material component includes by leaded secondary material：Pb 29.21wt%, Bi
1.16wt%, Sb 0.68wt%, Ag 0.06g/t, Cu 1.25wt%, S 6.15wt%, Fe 8.31wt%, SiO2
26.39wt%, CaO 3.68wt%) and smelting process in the sour mud that generates (component includes：Pb 26.10wt%, S
3.45wt%, Fe 1.32wt%, SiO28.35wt%, CaO 9.68wt%) according to quality proportioning 100:30 are uniformly mixed, control
Mixture moisture processed is in 10wt%, through disk pelletizing or briquetting, cures 2 days naturally, obtains moisture in the pelletizing of 6.2wt%, ball
Group falls to steel plate in 3 meters of distances to be crushed.
Claims (9)
1. a kind of leaded secondary material balling technique, which is characterized in that the technique include by leaded secondary material and acid material,
Reproducibility iron powder mixes, and mixture cures through disk pelletizing or briquetting, obtain pelletizing naturally.
2. a kind of leaded secondary material balling technique according to claim 1, which is characterized in that the leaded secondary material
It is 100 with quality proportioning when acid material, the mixing of reproducibility iron powder:30~60:10~60.
3. a kind of leaded secondary material balling technique according to claim 2, which is characterized in that the leaded secondary material
It is 100 with quality proportioning when acid material, the mixing of reproducibility iron powder:40~50:30~50.
4. a kind of leaded secondary material balling technique according to claim 1, which is characterized in that the acidity material is sulphur
The sour mud generated in acid leaching slag or smelting process.
5. a kind of leaded secondary material balling technique according to claim 1, which is characterized in that the moisture of the mixture
Between 10~20wt%；Between preferably 15~20wt%.
6. a kind of leaded secondary material balling technique according to claim 1, which is characterized in that it is described cure naturally when
Between be 2~3 days.
7. a kind of leaded secondary material balling technique according to claim 1, which is characterized in that after the curing naturally,
Pelletizing moisture is between 3~10%.
8. a kind of leaded secondary material balling technique according to claim 1, which is characterized in that the pelletizing is at 2~5 meters
It is 5~7 times that distance, which falls to the not broken number of steel plate,.
9. a kind of leaded secondary material balling technique according to claim 1, which is characterized in that the reproducibility iron powder
Source is the argentiferous reproducibility iron powder of magnetic separation recovery.
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| CN201810218964.1A CN108384946A (en) | 2018-03-16 | 2018-03-16 | A kind of leaded secondary material balling technique |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787439A (en) * | 2010-03-02 | 2010-07-28 | 邓彤 | Method for recovering valuable metals from metallurgical waste |
| CN101824544A (en) * | 2010-04-12 | 2010-09-08 | 池煊庆 | Comprehensive recovery method for smelted lead waste slag of blast furnace |
| CN102154555A (en) * | 2011-03-01 | 2011-08-17 | 郴州市国大有色金属冶炼有限公司 | Blast furnace reduction matte smelting method and device for cleanly treating lead scraps |
| CN106167855A (en) * | 2016-08-08 | 2016-11-30 | 方喜 | A kind of cleaning method of smelting of lead containing sludge |
-
2018
- 2018-03-16 CN CN201810218964.1A patent/CN108384946A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787439A (en) * | 2010-03-02 | 2010-07-28 | 邓彤 | Method for recovering valuable metals from metallurgical waste |
| CN101824544A (en) * | 2010-04-12 | 2010-09-08 | 池煊庆 | Comprehensive recovery method for smelted lead waste slag of blast furnace |
| CN102154555A (en) * | 2011-03-01 | 2011-08-17 | 郴州市国大有色金属冶炼有限公司 | Blast furnace reduction matte smelting method and device for cleanly treating lead scraps |
| CN106167855A (en) * | 2016-08-08 | 2016-11-30 | 方喜 | A kind of cleaning method of smelting of lead containing sludge |
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Application publication date: 20180810 |