CN103436707A - Method for recycling iron, indium and tine in zinc volatilizing kiln slag - Google Patents
Method for recycling iron, indium and tine in zinc volatilizing kiln slag Download PDFInfo
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- CN103436707A CN103436707A CN2013103612999A CN201310361299A CN103436707A CN 103436707 A CN103436707 A CN 103436707A CN 2013103612999 A CN2013103612999 A CN 2013103612999A CN 201310361299 A CN201310361299 A CN 201310361299A CN 103436707 A CN103436707 A CN 103436707A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 84
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 49
- 239000011701 zinc Substances 0.000 title claims abstract description 49
- 229910052738 indium Inorganic materials 0.000 title claims abstract description 31
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000002893 slag Substances 0.000 title abstract description 13
- 238000004064 recycling Methods 0.000 title abstract 7
- 230000008569 process Effects 0.000 claims abstract description 39
- 239000012141 concentrate Substances 0.000 claims abstract description 29
- 238000007885 magnetic separation Methods 0.000 claims abstract description 24
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims description 43
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 27
- 239000003546 flue gas Substances 0.000 claims description 27
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 21
- 229910052718 tin Inorganic materials 0.000 claims description 21
- 238000009413 insulation Methods 0.000 claims description 19
- 230000002829 reductive effect Effects 0.000 claims description 17
- 230000001590 oxidative effect Effects 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 5
- 239000002028 Biomass Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 2
- 239000010949 copper Substances 0.000 abstract description 27
- 229910052802 copper Inorganic materials 0.000 abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 24
- 230000009467 reduction Effects 0.000 abstract description 14
- 239000002184 metal Substances 0.000 abstract description 13
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 24
- 238000003723 Smelting Methods 0.000 description 7
- 230000002776 aggregation Effects 0.000 description 7
- 238000004220 aggregation Methods 0.000 description 7
- 235000019580 granularity Nutrition 0.000 description 7
- -1 higher Cu Chemical class 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 230000007704 transition Effects 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 238000005070 sampling Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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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 provides a method for recycling iron, indium and tine in zinc volatilizing kiln slag. The method comprises the following steps: uniformly mixing zinc volatilizing kiln slag and a reducing agent, subsequently feeding the mixture into a rotary furnace to carry out reduction roasting, and at the same time capturing fume generated in the process; furthermore feeding oxidation gas into the rotary furnace, carrying out magnetic roasting and capturing the fume generated in the process at the same time; carrying out air-cooling on remaining materials inside the rotary furnace, grinding ore, and subsequently carrying out low intensity magnetic separation so as to obtain magnetite concentrate. The effective recycling of iron in the kiln slag is realized through the steps, and tail slag contains copper. The recycling rates of the iron, the indium and the zinc can be respectively 75-85%, 85-93% and 86-95%; through low intensity magnetic separation, the iron grade of the iron concentrate is improved while ensuring the recycling rate of the iron, the effective recycling of an iron resource is achieved, and the iron grade of the iron concentrate is improved to be 70-75% finally; the process is short, the operation is simple and feasible, economic cost is low and metal comprehensive recycling rate is high, a conventional process order of separation-first and smelting-later is broken, and the comprehensive utilization rate of a secondary resource is improved.
Description
Technical field
The present invention relates to select two-section roasting to reclaim the wherein method of iron, indium, tin after the first smelting of a kind of zinc Waelz clinker, belong to the comprehensive utilization of resources technical field.
Background technology
Leached mud when the zinc Waelz clinker is zinc hydrometallurgy is again with addition of 40～50% coke powder, extract the resistates after the metals such as zinc, lead under high temperature in rotary kiln, often contain the valuable metals such as higher Cu, In, Fe, the comprehensive utilization of resources Huge value in the Waelz clinker produced.The effective utilization of realization to it, but environmental contamination reduction also is significant to the research of valuable metal separation technology simultaneously.
At present, the method for effectively utilizing about the zinc Waelz clinker is mainly beneficiating method, blast-furnace method, reduction-sulfurization method, intensified smelting method and melting chloride volatility process etc.The ore deposit phase composite complexity of zinc Waelz clinker, valuable metal copper, silver are sosoloid or cancellated fine-grained disseminated grain, and beneficiation method is difficult to separate the valence component that has wherein.After certain research institution once adopts first magnetic separation, the flotation combined techniques was processed the zinc Waelz clinker, and process flow sheet as shown in Figure 1.
This technique mainly utilizes direct beneficiating method to be processed the zinc Waelz clinker, have advantages of simple to operate, energy consumption is low, but its process after the products obtained therefrom using value not high.Kiln slag is the gained iron ore concentrate after magnetic separation, iron grade Fe 69.23% wherein, but wherein containing S 1.09%, C 2.27%, Cu 1.71%, Ag 256g/t, In 170g/t.Gained copper ore concentrates in mine tailing after the floating carbon of employing method for floating recovery, wherein copper grade is only Cu 5.12%, the rate of recovery 28.56%, and wherein containing S 15.76%, Fe 11.36%, Ag 200g/t, In 138g/t.Therefore this technique gained iron ore concentrate and copper ore concentrates utility value are all little, and directly beneficiating method can not be realized the wherein efficient recovery of multiple valuable metal.
Adopt the pure metallurgical methods such as blast-furnace method, reduction-sulfurization method and intensified smelting with all realizing the recovery of multielement in the zinc Waelz clinker, but this type of technique generally all exists, technical process is long, energy consumption is higher and SO
2the problems such as smoke pollution, be difficult to apply industrial.The melting chloride volatility process is processed the zinc Waelz clinker and is had valuable element concentration ratio advantages of higher in self-heating, flue dust, but in slag, the evaporation rate of zinc and copper is on the low side, and technique is larger to the corrosion of equipment, also is difficult to apply industrial.
Summary of the invention
For addressing the above problem, the invention provides a kind of method that reclaims iron, indium, tin in the zinc Waelz clinker, the dressing and smelting process path combination broken traditions, realize that wherein the multielement of iron, indium, tin reclaims.
The present invention realizes by following technical proposal: a kind of method that reclaims iron, indium, tin in the zinc Waelz clinker, and following each step of process:
(1) be 10～30% of zinc Waelz clinker quality by reductive agent, pack into after zinc Waelz clinker and reductive agent are mixed in rotary kiln, be warming up to 1000～1200 ℃ and carry out reducing roasting, and be incubated 150～180min, the flue gas produced in trapping process simultaneously; Contain indium metal and tindioxide in this flue gas, both all can be reclaimed by ordinary method; Under this reduction temperature, in the zinc Waelz clinker, the cupric particle aggregation is grown up, and has realized effective separation of copper, iron phase, is conducive to the recovery of next step iron, and in process, iron phase major part is reduced into metallic iron;
(2) after step (1) insulation finishes, oxidizing gas is passed in rotary kiln, continue with 1000～1200 ℃ of insulation 60～120min, and the flue gas produced in the trapping process; In flue gas, valuable constituent is mainly tindioxide, by ordinary method, can realize reclaiming; This step is magnetizing roasting, under the atmosphere of oxidizing gas, step (1) reduction gained metallic iron phase transition can be become be easy to the magnetite concentrate of ore grinding, for the magnetic separation of next step iron is reclaimed ready;
(3) the remaining material in rotary kiln in step (2) is carried out to air cooling, then ore grinding, then carry out low intensity magnetic separation, obtain magnetite concentrate.This step has realized the efficient recovery of iron in the kiln slag, and copper is present in tailings.
Reductive agent in described step (1) is one or more in fine coal, oil, coke powder, biomass carbon.
Oxidizing gas in described step (2) is air, oxygen-rich air or oxygen.
The flow of the oxidizing gas in described step (2) is 0.01～0.5L/min.
The outlet temperature of described step (3) hollow cold is controlled at 25～145 ℃.
Ore grinding is that to be milled to granularity be 20～80 orders in described step (3).
Low intensity magnetic separation intensity in described step (3) is 72～200kA/m.
The composition of zinc Waelz clinker is comparatively complicated, and phase embedding structure in ore deposit is to support mutually containing iron ore, and other ore deposit phase granularities are less, and the symbiotic relationship complexity, and directly ore dressing sorts with pure metallurgical method intractability larger.The present invention selects two-stage roasting technique to be processed the zinc Waelz clinker after adopting first smelting, and the dressing and smelting process path combination broken traditions has realized that wherein the multielement of iron, indium, tin reclaims.Its process characteristic is to divide two sections to carry out reducing roasting and magnetizing roasting to the zinc Waelz clinker, and is trapped producing flue gas in process, reclaims indium and tin wherein; Remaining material, after air cooling, ore grinding are processed, is controlled certain low intensity magnetic separation intensity it is carried out to low intensity magnetic separation, obtains magnetite concentrate, realizes the recovery to iron.
Beneficial effect and advantage that the present invention has are:
(1) by controlling calcination atmosphere, sinter process is divided into to two sections.The reducing roasting stage, by wherein indium, tin resource volatilization realize both high efficiente callbacks, and structure is deposited in the tax that changes iron, copper phase in the zinc Waelz clinker by controlling maturing temperature, the cupric particle aggregation is grown up, with the ore grinding of iron phase by the later stage, effectively separate, realize both efficient recovery, improve the iron ore concentrate quality; In the magnetizing roasting stage, change system atmosphere, by the iron phase transition, is the magnetite that is easy to ore grinding, and the magnetic separation that is conducive to iron is reclaimed; The rate of recovery of iron, indium, tin can reach respectively 75～85%, 85～93% and 86～95%;
(2) by low intensity magnetic separation, improve the iron grade in iron ore concentrate when guaranteeing iron recovery, realized the efficient recovery of iron resources, finally make the iron grade in iron ore concentrate reach 70～75%;
(3) technical process is shorter, and operation is simple, and Financial cost is low, the metal comprehensive recovery is high, has larger prospects for commercial application;
(4) smelting process order after the first choosing broken traditions, for the foundation of complex feedstock treatment theory system provides reference, improved the comprehensive utilization ratio of secondary resource.
The accompanying drawing explanation
Fig. 1 be after the first magnetic separation of zinc Waelz clinker flotation in conjunction with the process flow sheet of processing;
Fig. 2 is process flow sheet of the present invention.
Embodiment
Below with example, further illustrate flesh and blood of the present invention, but content of the present invention is not limited to this.
Embodiment 1
(1) be 20% of zinc Waelz clinker quality by reductive agent, pack into after zinc Waelz clinker and fine coal are mixed in rotary kiln, be warming up to 1000 ℃ and carry out reducing roasting, and insulation 180min, the flue gas produced in trapping process simultaneously; Contain indium metal and tindioxide in this flue gas, both all can be reclaimed by ordinary method; Under this reduction temperature, in the zinc Waelz clinker, the cupric particle aggregation is grown up, and has realized effective separation of copper, iron phase, is conducive to the recovery of next step iron, and in process, iron phase major part is reduced into metallic iron;
(2) after step (1) insulation finishes, oxygen be take to flow as 0.05L/min passes in rotary kiln, continue with 1000 ℃ of insulation 100min, and the flue gas produced in the trapping process; In flue gas, valuable constituent is mainly tindioxide, by ordinary method, can realize reclaiming; This step is magnetizing roasting, under the atmosphere of oxidizing gas, step (1) reduction gained metallic iron phase transition can be become be easy to the magnetite concentrate of ore grinding, for the magnetic separation of next step iron is reclaimed ready;
(3) the remaining material in rotary kiln in step (2) is carried out to air cooling to 120 ℃, then ore grinding to granularity is 40 orders, then take intensity as 95kA/m carries out low intensity magnetic separation, obtain magnetite concentrate.This step has realized the efficient recovery of iron in the kiln slag, and copper is present in tailings.
Detect and know through sampling, in magnetite concentrate, copper content is 0.38%, and the iron grade is 72.34%, and iron recovery is 75.85%, and indium recovery is 86.58%, and the tin rate of recovery is 88.92%.
Embodiment 2
(1) be 25% of zinc Waelz clinker quality by reductive agent, in the rotary kiln of packing into after fine coal is mixed, be warming up to 1100 ℃ and carry out reducing roasting, and insulation 150min, the flue gas produced in trapping process simultaneously; Contain indium metal and tindioxide in this flue gas, both all can be reclaimed by ordinary method; Under this reduction temperature, in the zinc Waelz clinker, the cupric particle aggregation is grown up, and has realized effective separation of copper, iron phase, is conducive to the recovery of next step iron, and in process, iron phase major part is reduced into metallic iron;
(2) after step (1) insulation finishes, oxygen be take to flow as 0.05L/min passes in rotary kiln, continue with 1100 ℃ of insulation 95min, and the flue gas produced in the trapping process; In flue gas, valuable constituent is mainly tindioxide, by ordinary method, can realize reclaiming; This step is magnetizing roasting, under the atmosphere of oxidizing gas, step (1) reduction gained metallic iron phase transition can be become be easy to the magnetite concentrate of ore grinding, for the magnetic separation of next step iron is reclaimed ready;
(3) the remaining material in rotary kiln in step (2) is carried out to air cooling to 70 ℃, then ore grinding to granularity is 60 orders, then take intensity as 105kA/m carries out low intensity magnetic separation, obtain magnetite concentrate.This step has realized the efficient recovery of iron in the kiln slag, and copper is present in tailings.
Detect and know through sampling, in magnetite concentrate, copper content is 0.30%, and the iron grade is 72.32%, and iron recovery is 80.35%, and indium recovery is 90.42%, and the tin rate of recovery is 93.34%.
Embodiment 3
(1) be 30% of zinc Waelz clinker quality by reductive agent, pack into after zinc Waelz clinker and fine coal are mixed in rotary kiln, be warming up to 1150 ℃ and carry out reducing roasting, and insulation 150min, the flue gas produced in trapping process simultaneously; Contain indium metal and tindioxide in this flue gas, both all can be reclaimed by ordinary method; Under this reduction temperature, in the zinc Waelz clinker, the cupric particle aggregation is grown up, and has realized effective separation of copper, iron phase, is conducive to the recovery of next step iron, and in process, iron phase major part is reduced into metallic iron;
(2) after step (1) insulation finishes, oxygen be take to flow as 0.2L/min passes in rotary kiln, continue with 1150 ℃ of insulation 100min, and the flue gas produced in the trapping process; In flue gas, valuable constituent is mainly tindioxide, by ordinary method, can realize reclaiming; This step is magnetizing roasting, under the atmosphere of oxidizing gas, step (1) reduction gained metallic iron phase transition can be become be easy to the magnetite concentrate of ore grinding, for the magnetic separation of next step iron is reclaimed ready;
(3) the remaining material in rotary kiln in step (2) is carried out to air cooling to 40 ℃, then ore grinding to granularity is 70 orders, then take intensity as 80kA/m carries out low intensity magnetic separation, obtain magnetite concentrate.This step has realized the efficient recovery of iron in the kiln slag, and copper is present in tailings.
Detect and know through sampling, in magnetite concentrate, copper content is 0.27%, and the iron grade is 73.28%, and iron recovery is 78.82%, and indium recovery is 91.34%, and the tin rate of recovery is 93.18%.
Embodiment 4
(1) be 10% of zinc Waelz clinker quality by reductive agent, pack into after zinc Waelz clinker, oil and coke powder are mixed in rotary kiln, be warming up to 1200 ℃ and carry out reducing roasting, and insulation 170min, the flue gas produced in trapping process simultaneously; Contain indium metal and tindioxide in this flue gas, both all can be reclaimed by ordinary method; Under this reduction temperature, in the zinc Waelz clinker, the cupric particle aggregation is grown up, and has realized effective separation of copper, iron phase, is conducive to the recovery of next step iron, and in process, iron phase major part is reduced into metallic iron;
(2) after step (1) insulation finishes, oxygen-rich air be take to flow as 0.01L/min passes in rotary kiln, continue with 1200 ℃ of insulation 60min, and the flue gas produced in the trapping process; In flue gas, valuable constituent is mainly tindioxide, by ordinary method, can realize reclaiming; This step is magnetizing roasting, under the atmosphere of oxidizing gas, step (1) reduction gained metallic iron phase transition can be become be easy to the magnetite concentrate of ore grinding, for the magnetic separation of next step iron is reclaimed ready;
(3) the remaining material in rotary kiln in step (2) is carried out to air cooling to 25 ℃, then ore grinding to granularity is 80 orders, then take intensity as 200kA/m carries out low intensity magnetic separation, obtain magnetite concentrate.This step has realized the efficient recovery of iron in the kiln slag, and copper is present in tailings.
Detect and know through sampling, in magnetite concentrate, copper content is 0.31%, and the iron grade is 73.37%, and iron recovery is 78.93%, and indium recovery is 92.46%, and the tin rate of recovery is 90.14%.
Embodiment 5
(1) be 15% of zinc Waelz clinker quality by reductive agent, pack into after zinc Waelz clinker and biomass carbon are mixed in rotary kiln, be warming up to 1100 ℃ and carry out reducing roasting, and insulation 160min, the flue gas produced in trapping process simultaneously; Contain indium metal and tindioxide in this flue gas, both all can be reclaimed by ordinary method; Under this reduction temperature, in the zinc Waelz clinker, the cupric particle aggregation is grown up, and has realized effective separation of copper, iron phase, is conducive to the recovery of next step iron, and in process, iron phase major part is reduced into metallic iron;
(2) after step (1) insulation finishes, air be take to flow as 0.5L/min passes in rotary kiln, continue with 1100 ℃ of insulation 120min, and the flue gas produced in the trapping process; In flue gas, valuable constituent is mainly tindioxide, by ordinary method, can realize reclaiming; This step is magnetizing roasting, under the atmosphere of oxidizing gas, step (1) reduction gained metallic iron phase transition can be become be easy to the magnetite concentrate of ore grinding, for the magnetic separation of next step iron is reclaimed ready;
(3) the remaining material in rotary kiln in step (2) is carried out to air cooling to 145 ℃, then ore grinding to granularity is 20 orders, then take intensity as 72kA/m carries out low intensity magnetic separation, obtain magnetite concentrate.This step has realized the efficient recovery of iron in the kiln slag, and copper is present in tailings.
Detect and know through sampling, in magnetite concentrate, copper content is 0.33%, and the iron grade is 74.08%, and iron recovery is 77.38%, and indium recovery is 90.12%, and the tin rate of recovery is 92.37%.
Claims (7)
1. a method that reclaims iron, indium, tin in the zinc Waelz clinker is characterized in that through following each step:
(1) be 10～30% of zinc Waelz clinker quality by reductive agent, pack into after zinc Waelz clinker and reductive agent are mixed in rotary kiln, be warming up to 1000～1200 ℃ and carry out reducing roasting, and be incubated 150～180min, the flue gas produced in trapping process simultaneously;
(2) after step (1) insulation finishes, oxidizing gas is passed in rotary kiln, continue with 1000～1200 ℃ of insulation 60～120min, and the flue gas produced in the trapping process;
(3) the remaining material in rotary kiln in step (2) is carried out to air cooling, then ore grinding, then carry out low intensity magnetic separation, obtain magnetite concentrate.
2. the method for iron, indium, tin in recovery zinc Waelz clinker according to claim 1, it is characterized in that: the reductive agent in described step (1) is one or more in fine coal, oil, coke powder, biomass carbon.
3. the method for iron, indium, tin in recovery zinc Waelz clinker according to claim 1, it is characterized in that: the oxidizing gas in described step (2) is air, oxygen-rich air or oxygen.
4. the method for iron, indium, tin in recovery zinc Waelz clinker according to claim 1, it is characterized in that: the flow of the oxidizing gas in described step (2) is 0.01～0.5L/min.
5. the method for iron, indium, tin in recovery zinc Waelz clinker according to claim 1, it is characterized in that: the outlet temperature of described step (3) hollow cold is controlled at 25～145 ℃.
6. the method for iron, indium, tin in recovery zinc Waelz clinker according to claim 1 is characterized in that: in described step (3), ore grinding is that to be milled to granularity be 20～80 orders.
7. the method for iron, indium, tin in recovery zinc Waelz clinker according to claim 1, it is characterized in that: the low intensity magnetic separation intensity in described step (3) is 72～200kA/m.
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| CN104307628A (en) * | 2014-09-19 | 2015-01-28 | 河南金利金铅有限公司 | Method for comprehensive utilization of fuming furnace slag from lead and zinc smelting |
| CN106119534A (en) * | 2016-08-01 | 2016-11-16 | 江苏省冶金设计院有限公司 | Process the method and system of zinc leaching residue |
| CN106148715A (en) * | 2016-08-01 | 2016-11-23 | 江苏省冶金设计院有限公司 | Process the method and system of leaded zinc kiln slag |
| CN106191450A (en) * | 2016-08-18 | 2016-12-07 | 江苏省冶金设计院有限公司 | Process the method and system of zinc leaching residue |
| CN108531742A (en) * | 2018-05-09 | 2018-09-14 | 中南大学 | A method of Nano-Zinc and iron ore concentrate are prepared by electric furnace dust |
| CN109182771A (en) * | 2018-11-13 | 2019-01-11 | 常宁市华兴冶化实业有限责任公司 | A method of recycling zinc from Zinc volatilization kiln slag |
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| CN111921700A (en) * | 2020-07-13 | 2020-11-13 | 黑龙江科技大学 | Method for comprehensively recovering multiple metals in copper smelting slag |
| CN113122727A (en) * | 2021-04-22 | 2021-07-16 | 鑫联环保科技股份有限公司 | Method for treating iron and steel smoke dust |
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| CN106191450A (en) * | 2016-08-18 | 2016-12-07 | 江苏省冶金设计院有限公司 | Process the method and system of zinc leaching residue |
| CN108531742A (en) * | 2018-05-09 | 2018-09-14 | 中南大学 | A method of Nano-Zinc and iron ore concentrate are prepared by electric furnace dust |
| CN109182771A (en) * | 2018-11-13 | 2019-01-11 | 常宁市华兴冶化实业有限责任公司 | A method of recycling zinc from Zinc volatilization kiln slag |
| CN110042224A (en) * | 2019-04-06 | 2019-07-23 | 柳州呈奥科技有限公司 | A kind of technique for extracting phosphide material from lead-zinc smelting plant by-products |
| CN111921700A (en) * | 2020-07-13 | 2020-11-13 | 黑龙江科技大学 | Method for comprehensively recovering multiple metals in copper smelting slag |
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| CN113695071A (en) * | 2021-08-24 | 2021-11-26 | 六盘水中联工贸实业有限公司 | Method for magnetic separation recovery of iron ore concentrate from iron-containing material rotary kiln slag |
| CN113695071B (en) * | 2021-08-24 | 2024-05-31 | 六盘水中联工贸实业有限公司 | Method for recycling iron concentrate by magnetic separation of iron-containing material rotary kiln slag |
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