CN106191453A - A kind of rotary hearth furnace dirt ash is utilized to reclaim zinc enriched substance and the method for potassium chloride - Google Patents
A kind of rotary hearth furnace dirt ash is utilized to reclaim zinc enriched substance and the method for potassium chloride Download PDFInfo
- Publication number
- CN106191453A CN106191453A CN201610774187.XA CN201610774187A CN106191453A CN 106191453 A CN106191453 A CN 106191453A CN 201610774187 A CN201610774187 A CN 201610774187A CN 106191453 A CN106191453 A CN 106191453A
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- hearth furnace
- rotary hearth
- water
- dirt ash
- enriched substance
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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
- C22B7/02—Working-up flue dust
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
-
- 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
-
- 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
- C22B7/006—Wet 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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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses and a kind of utilize rotary hearth furnace dirt ash to reclaim zinc enriched substance and the method for potassium chloride, comprise the following steps: pretreatment, pulp, extraction, solid-liquid separation, wash and be dried.The present invention efficiently solves the prior art situation to iron and steel enterprise's rotary hearth furnace collected ash difficult treatment, present invention process step is simple, the response rate for zinc enriched substance is high, achieve the regeneration of resource, turn waste into wealth, a circulating production line can be formed in iron and steel enterprise, save substantial amounts of production cost.
Description
Technical field
The invention belongs to iron and steel enterprise's rotary hearth furnace dirt ash process field, particularly relate to one and utilize rotary hearth furnace dirt ash to reclaim
Zinc enriched substance and the method for potassium chloride.
Background technology
The problem utilizing research the most both at home and abroad of iron and steel enterprise's rotary hearth furnace collected ash, processes iron and steel enterprise with rotary hearth furnace
The leftover bits and pieces of oneself output is that Direct Reduction Technology is at the most important application direction.Because it is economic and practical and environmental protection, in state
Inside and outside obtain quick popularization and application.Rotary hearth furnace processes in the rotary hearth furnace collected ash that gas mud (grey) obtains and mainly contains zinc, alkali
Slaines etc. have valence group part.How there is valence group part to realize separating and complete resource these, be that an iron and steel enterprise exists always
The target pursued, but not yet have the end stove collected ash Application way of comparative maturity to ask city at present.
Summary of the invention
It is an object of the invention to the problems referred to above overcoming prior art to exist, propose one and utilize rotary hearth furnace dirt ash to reclaim
Zinc enriched substance and the method for potassium chloride.The present invention efficiently solves prior art to iron and steel enterprise's rotary hearth furnace collected ash difficult treatment
Situation, present invention process step is simple, and the response rate for zinc enriched substance is high, it is achieved that the regeneration of resource, turns waste into wealth, can
In iron and steel enterprise, form a circulating production line, save substantial amounts of production cost.
The present invention realizes by the following technical solutions:
A kind of rotary hearth furnace dirt ash is utilized to reclaim zinc enriched substance and the method for potassium chloride, it is characterised in that to comprise the following steps:
Pretreatment: first infiltrate toward addition infiltration water in rotary hearth furnace dirt ash；
Pulp: by the wet rotary hearth furnace dirt ash after infiltration with size mixing and put into pulp bed with water and carry out pulp, obtains serosity, water in serosity
With the weight ratio of rotary hearth furnace dirt ash it is: 3:1 ~ 6:1, slurry time is 60 ~ 65 minutes；
Extraction: extracted by serosity, uses agitator to be stirred in serosity during extraction, extraction time is 15 ~ 150 points
Clock；
Solid-liquid separation: use equipment for separating liquid from solid to carry out solid-liquid separation in the serosity after extraction, obtain solid slag and solution；
Washing: solid slag is washed；
Being dried: be dried 4 ~ 6 hours by the solid slag after washing, obtain the water content zinc enriched substance less than 1%, described zinc is enriched with
In thing, zinc content is 40% ~ 65%, and baking temperature is 100 DEG C ~ 110 DEG C.
Also including settling step, settling step refers to be stirred solution, adds in precipitant precipitation solution after stirring
Non-ferrous metal, then solution is filtered by filter, obtains K2O concentration is the saline solution of 12% ~ 18%.
Also include that evaporation and concentration and crystallisation by cooling step, described evaporation and concentration and crystallisation by cooling step refer to K2O concentration
Be 12% ~ 18% saline solution through evaporation and concentration process after, carrying out crystallisation by cooling process, obtaining KCl content is 70% ~ 80%
Crystal.
In described settling step, whipping temp is 60 DEG C ~ 100 DEG C.
In described pre-treatment step, infiltration water is industry water, plant circulation water, desalination tail water or sea water.
The present invention compared with prior art, has an advantage in that:
1, the present invention efficiently solves the prior art situation to iron and steel enterprise's rotary hearth furnace collected ash difficult treatment, present invention process
Step is simple, and the response rate for zinc enriched substance is high, it is achieved that the regeneration of resource, turns waste into wealth, can be formed in iron and steel enterprise
Article one, circulating production line, saves substantial amounts of production cost.
2, during the present invention uses pre-treatment step, first infiltrate toward addition infiltration water in rotary hearth furnace dirt ash；To turning the end
Stove dirt ash first carries out pretreatment, it is therefore prevented that when sizing mixing, and occurs that the situation of bulk occurs, and serosity is uniform, substantially increases and sizes mixing
Efficiency, saved the time of sizing mixing.
3, during the present invention uses slurry step, by the wet rotary hearth furnace dirt ash after infiltration with size mixing and put into pulp bed with water and carry out
Pulp, obtains serosity, and in serosity, water with the weight ratio of rotary hearth furnace dirt ash is: 3:1 ~ 6:1, slurry time is 60 ~ 65 minutes；Size mixing
Speed is fast, and serosity is uniform, improves the efficiency of extraction.
4, during the present invention uses leach step, serosity is extracted, during extraction, use agitator to stir in serosity
Mixing, extraction time is 15 ~ 150 minutes；The efficiency of extraction can be improved by stirring.
5, during the present invention uses solid-liquid separation step, use equipment for separating liquid from solid to carry out solid-liquid in the serosity after extraction and divide
From, obtain solid slag and solution；Good separating effect.
6, during the present invention uses drying steps, the solid slag after washing is dried 4 ~ 6 hours, obtains water content less than 1%
Zinc enriched substance, in described zinc enriched substance, zinc content is 40% ~ 65%, and baking temperature is 100 DEG C ~ 110 DEG C.For zinc enriched substance
The response rate is high, it is achieved that the regeneration of resource, turns waste into wealth.
7, the method for the present invention has obtained the accreditation of Duo Jia iron and steel enterprise, is particularly suitable for popularizing.
Detailed description of the invention
Embodiment 1:
A kind of utilize rotary hearth furnace dirt ash to reclaim zinc enriched substance and the method for potassium chloride, comprise the following steps:
Pretreatment: first infiltrate toward addition infiltration water in rotary hearth furnace dirt ash；
Pulp: by the wet rotary hearth furnace dirt ash after infiltration with size mixing and put into pulp bed with water and carry out pulp, obtains serosity, water in serosity
With the weight ratio of rotary hearth furnace dirt ash it is: 3:1, slurry time is 60 minutes；
Extraction: extracted by serosity, uses agitator to be stirred in serosity during extraction, extraction time is 150 minutes；
Solid-liquid separation: use equipment for separating liquid from solid to carry out solid-liquid separation in the serosity after extraction, obtain solid slag and solution；
Washing: solid slag is washed；
It is dried: the solid slag after washing is dried 3 hours, obtains the water content zinc enriched substance less than 1%, described zinc enriched substance
Middle zinc content is 40%, and baking temperature is 100 DEG C.
In the present embodiment, also including settling step, settling step refers to be stirred solution, adds precipitant after stirring
Non-ferrous metal in precipitation solution, then solution is filtered by filter, obtain K2O concentration is the saline solution of 12%.
In the present embodiment, also include that evaporation and concentration and crystallisation by cooling step, described evaporation and concentration and crystallisation by cooling step are
Refer to K2O concentration be 12% saline solution through evaporation and concentration process after, carrying out crystallisation by cooling process, obtaining KCl content is
The crystal of 70%.
In the present embodiment, in described settling step, whipping temp is 60 DEG C.
In the present embodiment, in described pre-treatment step, infiltration water is industry water.
Embodiment 2:
A kind of utilize rotary hearth furnace dirt ash to reclaim zinc enriched substance and the method for potassium chloride, comprise the following steps:
Pretreatment: first infiltrate toward addition infiltration water in rotary hearth furnace dirt ash；
Pulp: by the wet rotary hearth furnace dirt ash after infiltration with size mixing and put into pulp bed with water and carry out pulp, obtains serosity, water in serosity
With the weight ratio of rotary hearth furnace dirt ash it is: 4:1, slurry time is 62 minutes；
Extraction: extracted by serosity, uses agitator to be stirred in serosity during extraction, extraction time is 120 minutes；
Solid-liquid separation: use equipment for separating liquid from solid to carry out solid-liquid separation in the serosity after extraction, obtain solid slag and solution；
Washing: solid slag is washed；
It is dried: the solid slag after washing is dried 4 hours, obtains the water content zinc enriched substance less than 1%, described zinc enriched substance
Middle zinc content is 50%, and baking temperature is 105 DEG C.
In the present embodiment, also including settling step, settling step refers to be stirred solution, adds precipitant after stirring
Non-ferrous metal in precipitation solution, then solution is filtered by filter, obtain K2O concentration is the saline solution of 15%.
In the present embodiment, also include that evaporation and concentration and crystallisation by cooling step, described evaporation and concentration and crystallisation by cooling step are
Refer to K2O concentration be 15% saline solution through evaporation and concentration process after, carrying out crystallisation by cooling process, obtaining KCl content is
The crystal of 75%.
In the present embodiment, in described settling step, whipping temp is 80 DEG C.
In the present embodiment, in described pre-treatment step, infiltration water is plant circulation water.
Embodiment 3:
A kind of utilize rotary hearth furnace dirt ash to reclaim zinc enriched substance and the method for potassium chloride, comprise the following steps:
Pretreatment: first infiltrate toward addition infiltration water in rotary hearth furnace dirt ash；
Pulp: by the wet rotary hearth furnace dirt ash after infiltration with size mixing and put into pulp bed with water and carry out pulp, obtains serosity, water in serosity
Being 6:1 with the weight ratio of rotary hearth furnace dirt ash, slurry time is 65 minutes；
Extraction: extracted by serosity, uses agitator to be stirred in serosity during extraction, extraction time is 15 minutes；
Solid-liquid separation: use equipment for separating liquid from solid to carry out solid-liquid separation in the serosity after extraction, obtain solid slag and solution；
Washing: solid slag is washed；
It is dried: the solid slag after washing is dried 6 hours, obtains the water content zinc enriched substance less than 1%, described zinc enriched substance
Middle zinc content is 65%, and baking temperature is 110 DEG C.
In the present embodiment, also including settling step, settling step refers to be stirred solution, adds precipitant after stirring
Non-ferrous metal in precipitation solution, then solution is filtered by filter, obtain K2O concentration is the saline solution of 18%.
In the present embodiment, also include that evaporation and concentration and crystallisation by cooling step, described evaporation and concentration and crystallisation by cooling step are
Refer to K2O concentration be 18% saline solution through evaporation and concentration process after, carrying out crystallisation by cooling process, obtaining KCl content is
The crystal of 80%.
In the present embodiment, in described settling step, whipping temp is 100 DEG C.
In the present embodiment, in described pre-treatment step, infiltration water is desalination tail water.
Embodiment 4:
It is with embodiment 1, embodiment 2, the difference of embodiment 3: infiltration water is sea water.
The invention is not restricted to above-described embodiment, all within the spirit and principles in the present invention, any amendment of being made, equivalent
Replacement, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. one kind utilizes rotary hearth furnace dirt ash to reclaim zinc enriched substance and the method for potassium chloride, it is characterised in that comprise the following steps:
Pretreatment: first infiltrate toward addition infiltration water in rotary hearth furnace dirt ash；
Pulp: by the wet rotary hearth furnace dirt ash after infiltration with size mixing and put into pulp bed with water and carry out pulp, obtains serosity, water in serosity
With the weight ratio of rotary hearth furnace dirt ash it is: 3:1 ~ 6:1, slurry time is 60 ~ 65 minutes；
Extraction: extracted by serosity, uses agitator to be stirred in serosity during extraction, extraction time is 15 ~ 150 points
Clock；
Solid-liquid separation: use equipment for separating liquid from solid to carry out solid-liquid separation in the serosity after extraction, obtain solid slag and solution；
Washing: solid slag is washed；
Being dried: be dried 3 ~ 6 hours by the solid slag after washing, obtain the water content zinc enriched substance less than 1%, described zinc is enriched with
In thing, zinc content is 40% ~ 65%, and baking temperature is 100 DEG C ~ 110 DEG C.
The most according to claim 1 a kind of rotary hearth furnace dirt ash is utilized to reclaim zinc enriched substance and the method for potassium chloride, its feature
It is: also include settling step, settling step to refer to solution and be stirred, after stirring, adds having in precipitant precipitation solution
Non-ferrous metal, then solution is filtered by filter, obtain K2O concentration is the saline solution of 12% ~ 18%.
The most according to claim 1 a kind of rotary hearth furnace dirt ash is utilized to reclaim zinc enriched substance and the method for potassium chloride, its feature
It is: also include that evaporation and concentration and crystallisation by cooling step, described evaporation and concentration and crystallisation by cooling step refer to K2O concentration is
The saline solution of 12% ~ 18%, after evaporation and concentration processes, is carrying out crystallisation by cooling process, is obtaining the crystalline substance that KCl content is 70% ~ 80%
Body.
The most according to claim 1 a kind of rotary hearth furnace dirt ash is utilized to reclaim zinc enriched substance and the method for potassium chloride, its feature
Being: in described settling step, whipping temp is 60 DEG C ~ 100 DEG C.
The most according to claim 1 a kind of rotary hearth furnace dirt ash is utilized to reclaim zinc enriched substance and the method for potassium chloride, its feature
Being: in described pre-treatment step, infiltration water is industry water, plant circulation water, desalination tail water or sea water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774187.XA CN106191453B (en) | 2016-08-31 | 2016-08-31 | It is a kind of to utilize rotary hearth furnace dirt ash recycling zinc enriched substance and the method for potassium chloride |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774187.XA CN106191453B (en) | 2016-08-31 | 2016-08-31 | It is a kind of to utilize rotary hearth furnace dirt ash recycling zinc enriched substance and the method for potassium chloride |
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| CN106191453A true CN106191453A (en) | 2016-12-07 |
| CN106191453B CN106191453B (en) | 2018-04-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724831A (en) * | 2019-10-31 | 2020-01-24 | 重庆赛迪热工环保工程技术有限公司 | Carbon circulating system and method for producing zinc oxide by industrially recycling zinc |
| CN110775998A (en) * | 2019-10-31 | 2020-02-11 | 重庆赛迪热工环保工程技术有限公司 | System and method for producing nano zinc oxide by industrially recycling zinc |
| CN110844932A (en) * | 2019-10-31 | 2020-02-28 | 重庆赛迪热工环保工程技术有限公司 | Method for producing nano zinc oxide by recovering zinc in zinc-containing solid waste of steel plant |
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| CN1632141A (en) * | 2004-12-13 | 2005-06-29 | 冯志雄 | Method for acid ammonia extraction of zinc from high silicon high iron low grade zinc oxide ore |
| CN102134648A (en) * | 2011-02-19 | 2011-07-27 | 唐山汇鑫嘉德节能减排科技股份有限公司 | Method for comprehensive treatment of industrial waste |
| CN102808087A (en) * | 2012-08-30 | 2012-12-05 | 莱芜钢铁集团有限公司 | Method for extracting zinc, potassium and sodium by using secondary dust of rotary hearth furnace |
| CN103131861A (en) * | 2013-03-12 | 2013-06-05 | 山东乾舜矿冶科技股份有限公司 | Integrated utilization method of ironmaking dust removal ash |
| CN104060099A (en) * | 2014-06-23 | 2014-09-24 | 贵州顶效开发区宏达金属综合回收有限公司 | Method for extracting Zn, In, Cd and Tl from lead and zinc smelting smoke dust |
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2016
- 2016-08-31 CN CN201610774187.XA patent/CN106191453B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632141A (en) * | 2004-12-13 | 2005-06-29 | 冯志雄 | Method for acid ammonia extraction of zinc from high silicon high iron low grade zinc oxide ore |
| CN102134648A (en) * | 2011-02-19 | 2011-07-27 | 唐山汇鑫嘉德节能减排科技股份有限公司 | Method for comprehensive treatment of industrial waste |
| CN102808087A (en) * | 2012-08-30 | 2012-12-05 | 莱芜钢铁集团有限公司 | Method for extracting zinc, potassium and sodium by using secondary dust of rotary hearth furnace |
| CN103131861A (en) * | 2013-03-12 | 2013-06-05 | 山东乾舜矿冶科技股份有限公司 | Integrated utilization method of ironmaking dust removal ash |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724831A (en) * | 2019-10-31 | 2020-01-24 | 重庆赛迪热工环保工程技术有限公司 | Carbon circulating system and method for producing zinc oxide by industrially recycling zinc |
| CN110775998A (en) * | 2019-10-31 | 2020-02-11 | 重庆赛迪热工环保工程技术有限公司 | System and method for producing nano zinc oxide by industrially recycling zinc |
| CN110844932A (en) * | 2019-10-31 | 2020-02-28 | 重庆赛迪热工环保工程技术有限公司 | Method for producing nano zinc oxide by recovering zinc in zinc-containing solid waste of steel plant |
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| CN106191453B (en) | 2018-04-13 |
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Effective date of registration: 20200616 Address after: 625300 Wanli Industrial Park, Hanyuan County, Ya'an City, Sichuan Province Patentee after: Hanyuan Weiye Environmental Protection Technology Co., Ltd Address before: Ya'an City, Sichuan province 625300 Jianghan Hanyuan County rich town road four No. 7 1 unit 3 Building No. 2 Patentee before: SICHUAN NEW YUANTAI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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