CN106367618A - Method for increasing vanadium leaching rate through waste plastic and stone coal mixed roasting - Google Patents
Method for increasing vanadium leaching rate through waste plastic and stone coal mixed roasting Download PDFInfo
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- CN106367618A CN106367618A CN201610816822.6A CN201610816822A CN106367618A CN 106367618 A CN106367618 A CN 106367618A CN 201610816822 A CN201610816822 A CN 201610816822A CN 106367618 A CN106367618 A CN 106367618A
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- vanadium
- waste plastics
- leaching
- leaching rate
- stone coal
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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
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
- C22B1/02—Roasting 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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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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- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for increasing the vanadium leaching rate through waste plastic and stone coal mixed roasting. According to the technical scheme, the method includes the steps that broken vanadium-bearing stone coal is ground till the particles with the particle size being smaller than 74 [mu]m account for 70wt% or above, and vanadium-bearing stone coal mineral powder is obtained; material proportioning is performed according to the condition that the mass ratio of the vanadium-bearing stone coal mineral powder to waste plastic powder is 1: (0.3-0.6), uniform mixing is performed, and a mixture is obtained; the mixture is put in an atmosphere furnace, an outlet pipeline of the atmosphere furnace communicates with a tail gas bottle containing a calcium hydroxide solution, roasting is performed for 40-80 min at the temperature ranging from 650 DEG C to 800 DEG C, a roasted product is obtained, an inlet pipeline is opened to feed air or oxygen for 30-80 min, generated oil and carbonaceous substances are combusted and removed, cooling is performed, and then the final roasted product is taken out; and the final roasted product is put in a stirring leaching tank, according to a solid-to-liquid ratio being 1: (1.5-3) Kg/L, sulfuric acid with the volume concentration being 8%-20% is added into the stirring leaching tank, leaching is performed for 3-6 h at the temperature ranging from 90 DEG C to 98 DEG C, solid-liquid separation is performed, and vanadium-bearing leachate is obtained. The method for increasing the vanadium leaching rate through waste plastic and stone coal mixed roasting has the characteristics that the cost is low, environmental pollution can be reduced, the leaching rate is high, and resource utilization of waste plastics is achieved.
Description
Technical field
The invention belongs to extracting vanadium from stone coal technical field.A kind of specifically related to waste plastics improve vanadium baking mixed with bone coal leaches
The method of rate.
Background technology
Bone coal is a kind of shale containing carbonaceous, and key property is that ash is high, density is big, caloric value is low and compact structure, belongs to
In low-grade containing vanadium resource.China's bone coal reserves are extremely abundant, and vanadium extraction from bone coal is that China develops vanadium resource
Individual important directions.The vanadium overwhelming majority in China's bone coal is present in illite class mineral, vanadium with v () form replace al (), it is present in the lattice of aluminosilicate with isomorphous form.To extract vanadium from bone coal, to first have to destroy Muscovitum
The lattice of class mineral makes vanadium therein discharge, and finally provides rational leaching condition to make vanadium transfer to solution from solid forms
In, separate with residue.
Traditional process for extracting vanadium from stone coal mainly has sodium roasting to leach and directly acid-leaching vanadium-extracted two kinds of techniques (Zhang Jian etc., stones
The present situation of coal vanadium extraction and research, Henan chemical industry, volume 2010 the 27th: 27-30).Sodium roasting technique has that V leaching rate is low, can produce
Raw a large amount of hydrogen chloride and chlorine, the shortcomings of cause severe contamination to environment；Directly process for extracting vanadium by acid leaching then exist extraction time length,
The deficiency such as sour consumption is high, wastewater discharge is big.
In recent years, scientific and technical personnel propose the vanadium to extract in bone coal with the method for chloridizing volatilization roasting, and this technique is kept away
Exempt from the steps such as leaching, purification enrichment and vanadium recovery is higher, Populus euphratica first-class (Populus euphratica first, Zhang Yimin, Chen Tiejun, Bao Shenxu, Liu
Great waves, citrine. vanadium emission during roasting of vanadium-bearing stone coal in
Chlorine. mineral engineering30 (2012) 95-98) adopt pure cl2Chlorination roasting is carried out to Hubei somewhere bone coal
Burn enrichment, roasting 1h at a temperature of 1000 DEG C, the volatility of vanadium has reached 90%.But using pure cl2As chlorinating agent high cost
High and too high to equipment requirements.
In sum, to this kind of mica-type Rock coal containing alum, processed using direct acidleach and blank baking acid immersion, leaching rate is not
High and energy consumption is big；And adopt sodium roasting then can add a large amount of industrial table salts, not only improve cost and pollute environment；Using chlorination
Metallurgical method can consume chlorine expensive in a large number and have the requirement of harshness to equipment.
Plastics are mainly prepared by petroleum refining product, and it is non-renewable that the rapid growth that plastics are consumed exacerbates oil etc.
Contradiction between the shortage of resource and people's productive life demand.On the other hand, a large amount of consumption of plastics also bring greatly simultaneously
The plastic garbage of amount, because plastics are difficult to natural degradation, and easily produces various poisonous and harmfuls in processing procedure
Material, so the handling problems of plastic refuse are also increasingly serious.
Content of the invention
Purport of the present invention overcomes prior art defect it is therefore an objective to providing a kind of low cost, can reducing environmental pollution, salvage property
Sourceization is using the method that improve V leaching rate baking mixed with the high waste plastics of leaching rate and bone coal.
For achieving the above object, the comprising the concrete steps that of the technical solution used in the present invention:
Rock coal containing alum is first crushed to granularity and is less than 3mm by the first step, and the Rock coal containing alum after then crushing is ground to particle diameter and is less than
74 μm account for more than 70wt%, obtain Rock coal containing alum breeze.
Second step, by described Rock coal containing alum breeze: the mass ratio of waste plastics powder is 1: (0.3 ~ 0.6), to described containing vanadium
Add waste plastics powder, mix homogeneously in bone coal breeze, obtain compound.
3rd step, described compound is inserted in atmosphere furnace, and the outlet conduit of described atmosphere furnace is molten with equipped with calcium hydroxide
The tail gas bottle of liquid communicates, and then roasting 40 ~ 80min under the conditions of mixed atmosphere and 650 ~ 800 DEG C, obtains calcining；Then open
Inlet pipeline is passed through air or oxygen 30 ~ 80min, by the oils generating and carbonaceous combustion removing；Treat that atmosphere furnace is cooled to room temperature,
Take out calcining.
4th step, described calcining is put in stirred leaching tank, is 1: (1.5 ~ 3) kg/l by solid-to-liquid ratio, to described stirring
Add the sulphuric acid that volumetric concentration is 8 ~ 20% in leaching tanks, then under the conditions of 90 ~ 98 DEG C, leach 3 ~ 6h, solid-liquid separation, contained
Vanadium leachate.
Described waste plastics powder is one or more of pvc and plastic containing chlorine.
Described mixed atmosphere is the mixture of air and nitrogen；Wherein: the volumetric concentration of air is 5 ~ 30%, the body of nitrogen
Long-pending concentration is 70 ~ 95%.
Due to adopting technique scheme, the present invention compared with prior art has the positive effect that:
1st, the present invention is placed in roasting in oxygen-free environment by after waste plastics and bone coal mixing, is processed discarded by way of thermal cracking
Pvc, and effectively destroy the lattice structure of mineral using the pyrolysis product hcl of pvc, the leaching rate making vanadium up to 80 ~ 92%,
Leaching rate improves 7 ~ 13% compared with blank roasting.
2nd, the present invention carries out second-time burning by the thermal cracking products of waste plastics after being passed through air, takes full advantage of useless moulding
The calorific value of material, significantly improves roasting system and is effectively stripped of the carbon in raw ore.
3rd, waste plastics is added to be pyrolyzed together in bone coal and has not only effectively processed waste plastics, reduced waste plastics pair by the present invention
The pollution of environment and to be allowed to resource, low cost and prospects for commercial application notable.
Therefore, the present invention has low cost, can reduce environmental pollution, waste plastics recycling and the high spy of leaching rate
Point.
Specific embodiment
With reference to specific embodiment, the invention will be further described, not the restriction to its protection domain.
In this specific embodiment: described mixed atmosphere is the mixture of air and nitrogen；Wherein: the volumetric concentration of air
For 5 ~ 30%, the volumetric concentration of nitrogen is 70 ~ 95%.Repeat no more in embodiment.
Embodiment 1
A kind of waste plastics method of improving V leaching rate baking mixed with bone coal.The comprising the concrete steps that of the present embodiment methods described:
Rock coal containing alum is first crushed to granularity and is less than 3mm by the first step, and the Rock coal containing alum after then crushing is ground to particle diameter and is less than
74 μm account for more than 70wt%, obtain Rock coal containing alum breeze.
Second step, by described Rock coal containing alum breeze: the mass ratio of waste plastics powder is 1: (0.3 ~ 0.4), to described containing vanadium
Add waste plastics powder, mix homogeneously in bone coal breeze, obtain compound.
3rd step, described compound is inserted in atmosphere furnace, and the outlet conduit of described atmosphere furnace is molten with equipped with calcium hydroxide
The tail gas bottle of liquid communicates, and then roasting 40 ~ 80min under the conditions of mixed atmosphere and 650 ~ 700 DEG C, obtains calcining；Then open
Inlet pipeline is passed through air or oxygen 30 ~ 80min, by the oils generating and carbonaceous combustion removing；Treat that atmosphere furnace is cooled to room temperature,
Take out calcining.
4th step, described calcining is put in stirred leaching tank, is 1: (1.5 ~ 2.0) kg/l by solid-to-liquid ratio, stirs to described
Mix and in leaching tanks, add the sulphuric acid that volumetric concentration is 8 ~ 12%, then under the conditions of 90 ~ 98 DEG C, leach 3 ~ 6h, solid-liquid separation, obtain
Containing vanadium leachate.
Described waste plastics powder is pvc.
The atmosphere of described atmosphere furnace is oxygen-free environment.
Up to 80 ~ 86%, leaching rate improves 7 ~ 11% to the leaching rate of the present embodiment vanadium compared with blank roasting.
Embodiment 2
A kind of waste plastics method of improving V leaching rate baking mixed with bone coal.The comprising the concrete steps that of the present embodiment methods described:
Rock coal containing alum is first crushed to granularity and is less than 3mm by the first step, and the Rock coal containing alum after then crushing is ground to particle diameter and is less than
74 μm account for more than 70wt%, obtain Rock coal containing alum breeze.
Second step, by described Rock coal containing alum breeze: the mass ratio of waste plastics powder is 1: (0.4 ~ 0.5), to described containing vanadium
Add waste plastics powder, mix homogeneously in bone coal breeze, obtain compound.
3rd step, described compound is inserted in atmosphere furnace, and the outlet conduit of described atmosphere furnace is molten with equipped with calcium hydroxide
The tail gas bottle of liquid communicates, and then roasting 40 ~ 80min under the conditions of mixed atmosphere and 700 ~ 750 DEG C, obtains calcining；Then open
Inlet pipeline is passed through air or oxygen 30 ~ 80min, by the oils generating and carbonaceous combustion removing；Treat that atmosphere furnace is cooled to room temperature,
Take out calcining.
4th step, described calcining is put in stirred leaching tank, is 1: (2.0 ~ 2.5) kg/l by solid-to-liquid ratio, stirs to described
Mix and in leaching tanks, add the sulphuric acid that volumetric concentration is 12 ~ 16%, then under the conditions of 90 ~ 98 DEG C, leach 3 ~ 6h, solid-liquid separation, obtain
To containing vanadium leachate.
Described waste plastics powder is plastic containing chlorine.
The atmosphere of described atmosphere furnace is oxygen-free environment.
Up to 84 ~ 90%, leaching rate improves 8 ~ 12% to the leaching rate of the present embodiment vanadium compared with blank roasting.
Embodiment 3
A kind of waste plastics method of improving V leaching rate baking mixed with bone coal.The comprising the concrete steps that of the present embodiment methods described:
Rock coal containing alum is first crushed to granularity and is less than 3mm by the first step, and the Rock coal containing alum after then crushing is ground to particle diameter and is less than
74 μm account for more than 70wt%, obtain Rock coal containing alum breeze.
Second step, by described Rock coal containing alum breeze: the mass ratio of waste plastics powder is 1: (0.5 ~ 0.6), to described containing vanadium
Add waste plastics powder, mix homogeneously in bone coal breeze, obtain compound.
3rd step, described compound is inserted in atmosphere furnace, and the outlet conduit of described atmosphere furnace is molten with equipped with calcium hydroxide
The tail gas bottle of liquid communicates, and then roasting 40 ~ 80min under the conditions of mixed atmosphere and 750 ~ 800 DEG C, obtains calcining；Then open
Inlet pipeline is passed through air or oxygen 30 ~ 80min, by the oils generating and carbonaceous combustion removing；Treat that atmosphere furnace is cooled to room temperature,
Take out calcining.
4th step, described calcining is put in stirred leaching tank, is 1: (2.5 ~ 3.0) kg/l by solid-to-liquid ratio, stirs to described
Mix and in leaching tanks, add the sulphuric acid that volumetric concentration is 16 ~ 20%, then under the conditions of 90 ~ 98 DEG C, leach 3 ~ 6h, solid-liquid separation, obtain
To containing vanadium leachate.
Described waste plastics powder is the mixture of pvc and plastic containing chlorine.
The atmosphere of described atmosphere furnace is oxygen-free environment.
Up to 87 ~ 92%, leaching rate improves 9 ~ 13% to the leaching rate of the present embodiment vanadium compared with blank roasting.
This specific embodiment compared with prior art has the positive effect that:
1st, this specific embodiment is placed in roasting in oxygen-free environment by after waste plastics and bone coal mixing, place by way of thermal cracking
The discarded pvc of reason, and effectively destroy the lattice structure of mineral using the pyrolysis product hcl of pvc, make the leaching rate of vanadium up to
80 ~ 92%, leaching rate improves 7 ~ 13% compared with blank roasting.
2nd, this specific embodiment carries out second-time burning by the thermal cracking products of waste plastics after being passed through air, fully profit
With the calorific value of waste plastics, significantly improve roasting system and be effectively stripped of the carbon in raw ore.
3rd, this specific embodiment adds waste plastics in bone coal and is pyrolyzed together and has not only effectively processed waste plastics, minimizing
To the pollution of environment and to be allowed to resource, low cost and prospects for commercial application notable for waste plastics.
Therefore, this specific embodiment has low cost, can reduce environmental pollution, waste plastics recycling and leaching rate
High feature.
Claims (3)
1. a kind of baking mixed method improving V leaching rate of waste plastics and bone coal is it is characterised in that the concrete steps of the method
It is:
Rock coal containing alum is first crushed to granularity and is less than 3mm by the first step, and the Rock coal containing alum after then crushing is ground to particle diameter and is less than
74 μm account for more than 70wt%, obtain Rock coal containing alum breeze；
Second step, by described Rock coal containing alum breeze: the mass ratio of waste plastics powder is 1: (0.3 ~ 0.6), to described Rock coal containing alum
Add waste plastics powder, mix homogeneously in breeze, obtain compound；
3rd step, described compound is inserted in atmosphere furnace, the outlet conduit of described atmosphere furnace with equipped with aqua calcises
Tail gas bottle communicates, and then roasting 40 ~ 80min under the conditions of mixed atmosphere and 650 ~ 800 DEG C, obtains calcining；Then open import
Pipeline is passed through air or oxygen 30 ~ 80min, by the oils generating and carbonaceous combustion removing；Treat that atmosphere furnace is cooled to room temperature, take out
Calcining；
4th step, described calcining is put in stirred leaching tank, is 1: (1.5 ~ 3) kg/l by solid-to-liquid ratio, to described leaching
Add the sulphuric acid that volumetric concentration is 8 ~ 20% in groove, then under the conditions of 90 ~ 98 DEG C, leach 3 ~ 6h, solid-liquid separation, obtain soaking containing vanadium
Go out liquid.
2. the baking mixed method improving V leaching rate of the waste plastics according to claims 1 and bone coal it is characterised in that
Described waste plastics powder is one or more of pvc and plastic containing chlorine.
3. the baking mixed method improving V leaching rate of the waste plastics according to claims 1 and bone coal it is characterised in that
Described mixed atmosphere is the mixture of air and nitrogen；Wherein: the volumetric concentration of air is 5 ~ 30%, the volumetric concentration of nitrogen is
70~95%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610816822.6A CN106367618B (en) | 2016-09-12 | 2016-09-12 | A kind of waste plastics and the baking mixed method for improving V leaching rate of bone coal |
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| CN201610816822.6A CN106367618B (en) | 2016-09-12 | 2016-09-12 | A kind of waste plastics and the baking mixed method for improving V leaching rate of bone coal |
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| CN106367618B CN106367618B (en) | 2018-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285975A (en) * | 2017-12-27 | 2018-07-17 | 中南大学 | A method of using PVC pyrolysis lithium is extracted from lepidolite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666512A (en) * | 1985-04-18 | 1987-05-19 | U.S. Vanadium Corp. | Method for recovering vanadium from vanadium-containing ore |
| CN103421963A (en) * | 2013-08-26 | 2013-12-04 | 武汉科技大学 | Method for extracting vanadium from stone coal containing vanadium |
| CN103421964A (en) * | 2013-08-26 | 2013-12-04 | 武汉科技大学 | Method for leaching vanadium from stone coal containing vanadium |
| CN104911360A (en) * | 2015-07-10 | 2015-09-16 | 上海第二工业大学 | Method and device for extracting metal indium in LCD by virtue of chloridizing volatilization with PVC as a chloridizing agent |
| CN104975179A (en) * | 2015-06-17 | 2015-10-14 | 山西八达镁业有限公司 | Method for jointly operating metal magnesium smelting dolomite roasting and waste incineration |
-
2016
- 2016-09-12 CN CN201610816822.6A patent/CN106367618B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666512A (en) * | 1985-04-18 | 1987-05-19 | U.S. Vanadium Corp. | Method for recovering vanadium from vanadium-containing ore |
| CN103421963A (en) * | 2013-08-26 | 2013-12-04 | 武汉科技大学 | Method for extracting vanadium from stone coal containing vanadium |
| CN103421964A (en) * | 2013-08-26 | 2013-12-04 | 武汉科技大学 | Method for leaching vanadium from stone coal containing vanadium |
| CN104975179A (en) * | 2015-06-17 | 2015-10-14 | 山西八达镁业有限公司 | Method for jointly operating metal magnesium smelting dolomite roasting and waste incineration |
| CN104911360A (en) * | 2015-07-10 | 2015-09-16 | 上海第二工业大学 | Method and device for extracting metal indium in LCD by virtue of chloridizing volatilization with PVC as a chloridizing agent |
Non-Patent Citations (3)
| Title |
|---|
| 任浩华等: "PVC热解过程中HCl的生成及其影响因素", 《中国环境科学》 * |
| 熊如意等: "石煤提钒的生产工艺及污染治理措施", 《环保科技》 * |
| 龙世刚等: "废弃聚氯乙烯热解脱氯的研究", 《钢铁研究学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285975A (en) * | 2017-12-27 | 2018-07-17 | 中南大学 | A method of using PVC pyrolysis lithium is extracted from lepidolite |
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