CN106399702A - Technology for recycling nonferrous metals in process of treating lead-zinc slag through rotary hearth furnace - Google Patents
Technology for recycling nonferrous metals in process of treating lead-zinc slag through rotary hearth furnace Download PDFInfo
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- CN106399702A CN106399702A CN201610855091.6A CN201610855091A CN106399702A CN 106399702 A CN106399702 A CN 106399702A CN 201610855091 A CN201610855091 A CN 201610855091A CN 106399702 A CN106399702 A CN 106399702A
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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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
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
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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
- C22B11/021—Recovery of noble metals from waste materials
- C22B11/023—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
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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
- C22B13/025—Recovery from waste materials
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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
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
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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
- C22B58/00—Obtaining gallium or indium
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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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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Abstract
The invention discloses a technology for recycling nonferrous metals in the process of treating lead-zinc slag through a rotary hearth furnace. The technology comprises the following steps that 1, ingredient preparation and briquetting are carried out; 2, direct reduction is carried out in the rotary hearth furnace; and 3, zinc oxide dust is recycled through a rotary hearth furnace dust collection system. The invention further discloses nonferrous metals prepared through the technology. By the adoption of the method of carrying out direct reduction in the rotary hearth furnace, synchronous enrichment and recycling of nonferrous metals in the lead-zinc slag are achieved, the lead and zinc volatilization rate reaches 90% or above, and the silver and indium volatilization rate reaches 80% or above; the rotary hearth furnace is easy to operate and high in heat utilization rate, meanwhile, the whole technological process is short, material adaptability is high, and comprehensive utilization of resources is achieved. Zinc oxide dust is smoke dust collected in the rotary hearth furnace dust collection system, the production cost is low, only the bagging cost, the transfer cost, the marketing cost and the like need to be input, and the price advantage is high.
Description
Technical field
The invention belongs to metallurgical technology field, process, particularly to a kind of rotary hearth furnace, the work that lead cadmia reclaims non-ferrous metal
Skill.
Background technology
Greatly develop with non-ferrous metal industry, it is increasingly severe that melting waste slag stores up problem, current shortage of resources and ring
Border bearing capacity is fragile, has been two big bottlenecks of restriction China economic development.Simultaneously world steel industry fast development with
And the pay attention to day by day to environmental conservation for the international community, the price such as the resource scarcity such as iron ore, steel scrap, coke and natural gas in addition
The combined influence such as sharp rise, and makes the production cost more and more higher of enterprise, how future increases solid waste comprehensive utilization of resources
It is still the emphasis of state reform development.By recycling metals resources from the various wastes of enormous amount, turn waste into wealth, reach
To minimizing, innoxious and resource, it is the inevitable choice of environment, economy, social sustainable development.
2015, national nonferrous smelting slag discharged 1.1 hundred million tons, and wherein zinc leaching residue amount is about 5,000,000 t.The master of such slag
Wanting component to be Fe, Zn, Pb, in this outer portion slag, also contain substantial amounts of rare precious metal indium etc., if be not acted upon, can account for
It is used for storing up with substantial amounts of soil, causes the huge waste of resource, the heavy metal ion in slag can penetrate into soil with rainwater simultaneously
Earth and subsoil water, cause serious environmental pollution.
The Land use systems of lead cadmia mainly have three kinds at present：1. return pyrometallurgical smelting flow process, reclaim valuable metal therein.
This processing mode increased the load of smelting equipment, and energy consumption substantially increases, and harmful substance circulation accumulation, easily causes technique
Situation deteriorates.2. stack as garbage or fill.Valuable metal in this processing mode slag can not be recycled, and not only makes
Become the waste of various metals resources, and pollute environment.3. minority valuable metal therein or noble metal, the slag of output are only reclaimed
Store up as garbage.Lead cadmia synthetical recovery mode is divided into two classes：Direct method and indirect method.Direct method be using lead cadmia as
Primary raw material, selects suitable technique that minority valuable metal in lead smelting gas is reclaimed, and its main method has floatation, returns
Rotary kiln volatility process.Indirect method is that lead smelting gas are added in the way of dispensing lead concentrate, carries out back in the technical process that lead is smelted
Receive.
To sum up, processing at present the metal that the method for lead cadmia reclaims is only a kind of or several metals on a small quantity, resource comprehensive
Utilization rate is low；During Slag treatment, the heavy metal element of residual is not solidified mostly simultaneously, and the finishing slag of output exists secondary
Pollution.
Content of the invention
Goal of the invention：First technical problem to be solved by this invention is to provide a kind of rotary hearth furnace to process lead cadmia to reclaim
The technique of non-ferrous metal.Being capable of non-ferrous metal in efficient recovery lead cadmia using this technique.
Second technical problem to be solved by this invention there is provided the non-ferrous metal that above-mentioned technique prepares.
3rd technical problem to be solved by this invention there is provided the application of above-mentioned non-ferrous metal.
Technical scheme：Technical scheme is as follows：A kind of rotary hearth furnace processes the technique that lead cadmia reclaims non-ferrous metal,
Comprise the following steps：
1) dispensing-briquetting：Take lead cadmia, reducing agent and additive to carry out dispensing in proportion, be sufficiently mixed, compacting is agglomerating
Block, is dried at 30～200 DEG C and obtains dry agglomerate；
2) rotary hearth furnace direct-reduction：By step 1) agglomerate of drying that obtains enters in rotary hearth furnace, controls reaction in furnace temperature
Degree and response time, carry out direct reduction reactor and obtain DRI agglomerate；
3) rotary hearth furnace dust collecting system reclaims zinc oxide dust：The flue gas that in rotary hearth furnace, reduction reaction produces enters rotary hearth furnace and receives
Dirt system, collects and obtains zinc oxide dust, zinc oxide grade 50%-65% in described zinc oxide dust, argentiferous 0.15%-
0.3%；Lead, Zinc volatilization rate reach more than 90%, and silver, indium volatility reach more than 80%；Preferably, lead, zinc removal efficiency reach
More than 95%, silver-colored removal efficiency reaches more than 83%.
Wherein, above-mentioned steps 1) in the higher heavy scum of the iron-holder that produces for lead-zinc smelting system of lead cadmia, lead silver
Slag, iron vitriol slag and the lead cadmia mixture of one or more, the TFe content in described lead cadmia is 20～40%.
Wherein, above-mentioned steps 1) in reducing agent be common coal dust, fix in coal dust carbon content be 60～80%, described coal
The addition weight of powder is the 15%～35% of lead cadmia weight.
Wherein, above-mentioned steps 1) in additive be bentonite and liquid-containing binder.Water content in this liquid-containing binder is
90%～98%, its main component is one or more of amidin, glue, syrup, Colophonium.
Wherein, above-mentioned bentonitic addition weight is the 1%～4% of lead cadmia weight, the addition of described liquid-containing binder
Measure 2%～5% for lead cadmia weight.
Wherein, above-mentioned steps 1) in be dried agglomerate water content be 1%～5%.
Wherein, above-mentioned steps 2) in rotary hearth furnace reduction reaction temperature be 1200～1350 DEG C.
Wherein, above-mentioned steps 2) response time be 20～40min.
Present invention also includes above-mentioned rotary hearth furnace and processes the non-ferrous metal that lead cadmia iron-extracting process prepares.
Present invention also includes application in terms of zinc abstraction and flotation reclaim silver for the described non-ferrous metal；Can make simultaneously
It is zinc abstraction and the quality raw materials of flotation recovery silver.
Beneficial effect：Compared with prior art, there is following remarkable result：
1) rotary hearth furnace is simple to operate, and heat utilization efficiency is high, whole technological process simultaneously is short, material strong adaptability, metallic lead,
The volatility of zinc is high, and the not treatable low zinc of available rotary kiln, the zinc leaching residue of low lead are (as Zn<4%) it is achieved that resource
Comprehensive utilization.
2) zinc oxide dust in the present invention is the flue dust collected in rotary hearth furnace flue gas dust collection system, non-ferrous metal content phase
To higher, low production cost, it is only necessary to put into the costs such as pack, transhipment, marketing, has higher price advantage；
3) reducing agent in the present invention can use common coal dust, it is possible to use coke powder, reduces cost of material, resource obtains
More reasonably use.
Brief description
Fig. 1 present invention process flow chart.
Specific embodiment
For further appreciating that present disclosure, in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1 rotary hearth furnace processes the technique that lead cadmia reclaims valuable metal
Project year processes 500,000 tons of lead cadmia (butt), and moisture content is 25%.The main component of lead cadmia such as table 1：
Table 1 lead cadmia chemistry multielement analysises
| Title | TFe | SiO2 | Al2O3 | CaO | MgO | S | P | In | Pb | Zn |
| Leached mud | 23.34 | 13.03 | 2.43 | 3.25 | 1.18 | 5.25 | 0.02 | 0.034 | 7.11 | 17.25 |
Carry out direct-reduction using rotary hearth furnace to smelt, 1.25 ten thousand tons of bentonite, liquid-containing binder 1.75 ten thousand need to be allocated every year into
Ton, consumes 9.8 ten thousand tons of coal dust.
1) dispensing-briquetting：Take lead cadmia, reducing agent and additive to carry out dispensing in proportion, be sufficiently mixed, compacting is agglomerating,
It is dried at 200 DEG C and obtain dry agglomerate；Wherein, additive is bentonite and liquid-containing binder, and reducing agent is coal dust, coal dust
In solid carbon weight percentage be 60%, the addition of coal dust is the 19.6% of the weight of lead cadmia, bentonitic addition
Measure 2.5% of the weight for lead cadmia, the addition of liquid-containing binder is the 3.5% of the weight of lead cadmia；This agglomerate being dried
Water content be 1%；Water content in this liquid-containing binder is 94%, and its main component is amidin, glue, Colophonium
Mixture.
2) rotary hearth furnace direct-reduction：By step 1) agglomerate of drying that obtains enters in rotary hearth furnace, controls reaction in furnace temperature
Spending is 1200 DEG C and the response time is 40min, carries out direct reduction reactor and obtains DRI agglomerate；The component analyses of DRI agglomerate such as table
Shown in 2.
3) rotary hearth furnace dust collecting system reclaims zinc oxide dust：The flue gas that in rotary hearth furnace, reduction reaction produces enters rotary hearth furnace and receives
Dirt system, collects and obtains zinc oxide dust, 11.18 ten thousand tons/year of zinc oxide dust, component analyses such as table 3 institute of zinc oxide dust
Show, wherein lead, Zinc volatilization rate reach 93%, and silver, indium volatility reach 83%.
Table 2DRI component list
| TFe | SiO2 | Al2O3 | CaO | MgO | S | P | Pb | Zn | In | C |
| 31.71 | 20.64 | 4.46 | 4.61 | 2.24 | 3.56 | 0.03 | 0.11 | 0.23 | 0.01 | 7.76 |
Table 3 zinc oxide dust composition
| Zn | Pb | S | In | Ag |
| 60.12 | 14.58 | 4.87 | 0.10 | 0.01 |
Embodiment 2 rotary hearth furnace processes the technique that lead cadmia reclaims valuable metal
Project year processes 500,000 tons of lead cadmia (butt), and moisture content is 20%.The main component of lead cadmia such as table 4：
Table 4 lead cadmia chemistry multielement analysises
| Title | TFe | SiO2 | Al2O3 | CaO | MgO | S | P | In | Pb | Zn |
| Leached mud | 23.34 | 13.03 | 2.43 | 3.25 | 1.18 | 5.25 | 0.02 | 0.034 | 7.11 | 17.25 |
Carry out direct-reduction using rotary hearth furnace to smelt, 0.5 ten thousand tons of bentonite, 10,000 tons of liquid-containing binder need to be allocated every year into, disappear
7.5 ten thousand tons of coal dust of consumption.
1) dispensing-briquetting：Take lead cadmia, reducing agent and additive to carry out dispensing in proportion, be sufficiently mixed, compacting is agglomerating,
It is dried at 30 DEG C and obtain dry agglomerate；Wherein, additive is bentonite and liquid-containing binder, and reducing agent is coal dust, coal dust
In solid carbon weight percentage be 80%, the addition of coal dust is the 15% of the weight of lead cadmia, bentonitic addition
For the 1% of the weight of lead cadmia, the addition of liquid-containing binder is the 2% of the weight of lead cadmia；This be dried agglomerate aqueous
Measure as 5%；Water content in this liquid-containing binder is 90%, and its main component is amidin, glue, the mixing of syrup
Thing.
2) rotary hearth furnace direct-reduction：By step 1) agglomerate of drying that obtains enters in rotary hearth furnace, controls reaction in furnace temperature
Spending is 1350 DEG C and the response time is 20min, carries out direct reduction reactor and obtains DRI agglomerate, the ferrum element in agglomerate is reduced into
Fe, the component analyses of DRI agglomerate are as shown in table 5.
3) rotary hearth furnace dust collecting system reclaims zinc oxide dust：The flue gas that in rotary hearth furnace, reduction reaction produces enters rotary hearth furnace and receives
Dirt system, collects and obtains zinc oxide dust, 10.69 tons/year of zinc oxide dust, and the component analyses of zinc oxide dust are as shown in table 6,
Wherein lead, Zinc volatilization rate reach more than 90%, and silver, indium volatility reach more than 80%
Table 5DRI component list
| TFe | SiO2 | Al2O3 | CaO | MgO | S | P | Pb | Zn | In | C |
| 30.85 | 21.14 | 4.63 | 4.91 | 2.34 | 3.56 | 0.03 | 0.11 | 0.23 | 0.01 | 7.76 |
Table 6 zinc oxide dust composition
| Zn | Pb | S | In | Ag |
| 59.06 | 13.28 | 4.98 | 0.11 | 0.01 |
Embodiment 3 rotary hearth furnace processes the technique that lead cadmia reclaims valuable metal
Project year processes 500,000 tons of lead cadmia (butt), and moisture content is 20%.The main component of lead cadmia such as table 7：
Table 7 lead cadmia chemistry multielement analysises
| Title | TFe | SiO2 | Al2O3 | CaO | MgO | S | P | In | Pb | Zn |
| Leached mud | 23.34 | 13.03 | 2.43 | 3.25 | 1.18 | 5.25 | 0.02 | 0.034 | 7.11 | 17.25 |
Carry out direct-reduction using rotary hearth furnace to smelt, 20,000 tons of bentonite, 2.5 ten thousand tons of liquid-containing binder need to be allocated every year into, disappear
17.5 ten thousand tons of coal dust of consumption.
1) dispensing-briquetting：Take lead cadmia, reducing agent and additive to carry out dispensing in proportion, be sufficiently mixed, compacting is agglomerating,
It is dried at 30 DEG C and obtain dry agglomerate；Wherein, additive is bentonite and liquid-containing binder, and reducing agent is coal dust, coal dust
In solid carbon weight percentage be 80%, the addition of coal dust is the 35% of the weight of lead cadmia, bentonitic addition
For the 4% of the weight of lead cadmia, the addition of liquid-containing binder is the 5% of the weight of lead cadmia；This be dried agglomerate aqueous
Measure as 3%；Water content in this liquid-containing binder is 98%, and its main component is amidin, glue, syrup, Colophonium
Mixture.
2) rotary hearth furnace direct-reduction：By step 1) agglomerate of drying that obtains enters in rotary hearth furnace, controls reaction in furnace temperature
Spending is 1350 DEG C and the response time is 20min, carries out direct reduction reactor and obtains DRI agglomerate, the ferrum element in agglomerate is reduced into
Fe；The component analyses of DRI agglomerate are as shown in table 8.
3) rotary hearth furnace dust collecting system reclaims zinc oxide dust：The flue gas that in rotary hearth furnace, reduction reaction produces enters rotary hearth furnace and receives
Dirt system, collects and obtains zinc oxide dust, 11.94 tons/year of zinc oxide dust, and the component analyses of zinc oxide dust are as shown in table 9,
Wherein lead, Zinc volatilization rate reach more than 90%, and silver, indium volatility reach more than 80%.
Table 8DRI component list
| TFe | SiO2 | Al2O3 | CaO | MgO | S | P | Pb | Zn | In | C |
| 33.52 | 20.45 | 4.89 | 5.12 | 2.84 | 3.86 | 0.03 | 0.21 | 0.31 | 0.015 | 7.76 |
Table 9 zinc oxide dust composition
| Zn | Pb | S | In | Ag |
| 61.55 | 15.03 | 4.54 | 0.12 | 0.016 |
Comparative example：
Kiln process is the typical process flow that China processes used by wet method zinc leaching residue.This technique is to join in zinc leaching residue
After entering coke or coal dust, in revolution roasting in kilns, the cadmium in leached mud, indium volatilization, enter in oxide powder and zinc with gas cleaning,
It is enriched with flue dust, is reclaimed the valuable metal such as Pb, Zn, the metallic element such as Ag, Fe is entered kiln slag.
Rotary kiln processing technological flow is longer, and maintenance of equipment amount is big and requires lasting high temperature resistant, and investment is big, working environment phase
To poor, and equipment is huge, and power consumption is high to need to allocate into coal-fired in a large number and coke, and the addition of coal dust is lead cadmia weight
35%～55% (rotary hearth furnace method coal dust addition is the 15%～35% of lead cadmia weight).Can be returned by rotary kiln fuming volatilization
The silver of the zinc of receipts 90% about, 80% about lead and 10% about, most of silver is discarded, and causes mineral resources to waste.And
, more than 90%, the response rate of In, Ag is 80% about rotary hearth furnace method Pb, the Zn response rate, it is to avoid the waste of resource.
Below schematically the present invention and embodiments thereof are described, this description does not have restricted, institute in accompanying drawing
Show is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel enlightened by it, in the case of without departing from the invention objective, designs and this technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of rotary hearth furnace processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that comprising the following steps：
1) dispensing-briquetting：Take lead cadmia, reducing agent and additive to carry out dispensing in proportion, be sufficiently mixed, compacting is agglomerating, 30
It is dried at～200 DEG C and obtain dry agglomerate；
2) rotary hearth furnace direct-reduction：By step 1) agglomerate of drying that obtains enters in rotary hearth furnace, control reaction in furnace temperature and
In the response time, carry out direct reduction reactor and obtain DRI agglomerate；
3) rotary hearth furnace dust collecting system reclaims zinc oxide dust：Step 2) furnace reduction of transfer bottom reaction produce flue gas enter turn bottom
Stove dust collecting system, collects and obtains zinc oxide dust, zinc oxide grade 50%-65% in described zinc oxide dust, argentiferous
0.15%-0.3%；Lead, Zinc volatilization rate reach more than 90%, and silver, indium volatility reach more than 80%.
2. a kind of rotary hearth furnace according to claim 1 processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that institute
State step 1) in the higher heavy scum of the iron-holder that produces for lead-zinc smelting system of lead cadmia, lead smelting gas, iron vitriol slag and lead zinc
The mixture of one or more of slag.
3. a kind of rotary hearth furnace according to claim 1 processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that institute
State step 1) in reducing agent be coal dust, fixing carbon content in coal dust is 60～80%, and the addition weight of described coal dust is lead zinc
The 15%～35% of slag weight.
4. a kind of rotary hearth furnace according to claim 1 processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that institute
State step 1) in additive be bentonite and liquid-containing binder.
5. a kind of rotary hearth furnace according to claim 4 processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that institute
Stating bentonitic addition weight is the 1%～4% of lead cadmia weight, and the addition of described liquid-containing binder is lead cadmia weight
2%～5%.
6. a kind of rotary hearth furnace according to claim 1 processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that institute
State step 1) in be dried agglomerate water content be 1%～5%.
7. a kind of rotary hearth furnace according to claim 1 processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that institute
State step 2) in rotary hearth furnace reduction reaction temperature be 1200～1350 DEG C.
8. a kind of rotary hearth furnace according to claim 1 processes lead cadmia and reclaims the technique of non-ferrous metal it is characterised in that institute
State step 2) response time be 20～40min.
9. what the technique of the rotary hearth furnace process lead cadmia recovery non-ferrous metal described in any one of claim 1～8 prepared has
Non-ferrous metal.
10. application in terms of zinc abstraction and flotation reclaim silver for the non-ferrous metal described in claim 9.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619946A (en) * | 2017-08-25 | 2018-01-23 | 鞍钢股份有限公司 | Comprehensive utilization method of blast furnace flue gas dedusting ash |
| CN108034812A (en) * | 2017-11-15 | 2018-05-15 | 江苏省冶金设计院有限公司 | A kind of processing method of lead cadmia |
| CN109055751A (en) * | 2018-09-10 | 2018-12-21 | 中国恩菲工程技术有限公司 | The extraction system of Zn-ef ficiency in low-grade lead zinc ore |
| CN113373313A (en) * | 2021-06-17 | 2021-09-10 | 兰州理工大学 | Method for recovering indium in lead-silver slag by melting desulfurization-fuming indium volatilization |
| CN113801994A (en) * | 2021-07-26 | 2021-12-17 | 赛能杰高新技术股份有限公司 | Process for treating lead-zinc slag and recycling nonferrous metals by high-efficiency rotary hearth furnace |
| CN115259704A (en) * | 2022-05-18 | 2022-11-01 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | High-strength cementing material and preparation method and application thereof |
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| CN108034812A (en) * | 2017-11-15 | 2018-05-15 | 江苏省冶金设计院有限公司 | A kind of processing method of lead cadmia |
| CN109055751A (en) * | 2018-09-10 | 2018-12-21 | 中国恩菲工程技术有限公司 | The extraction system of Zn-ef ficiency in low-grade lead zinc ore |
| CN113373313A (en) * | 2021-06-17 | 2021-09-10 | 兰州理工大学 | Method for recovering indium in lead-silver slag by melting desulfurization-fuming indium volatilization |
| CN113801994A (en) * | 2021-07-26 | 2021-12-17 | 赛能杰高新技术股份有限公司 | Process for treating lead-zinc slag and recycling nonferrous metals by high-efficiency rotary hearth furnace |
| CN113801994B (en) * | 2021-07-26 | 2023-09-19 | 赛能杰高新技术股份有限公司 | Process for recycling nonferrous metals by treating lead-zinc slag through efficient rotary hearth furnace |
| CN115259704A (en) * | 2022-05-18 | 2022-11-01 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | High-strength cementing material and preparation method and application thereof |
| CN115259704B (en) * | 2022-05-18 | 2023-08-25 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | High-strength cementing material and preparation method and application thereof |
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