CN109385527A - A kind of method of synthetical recovery nichrome - Google Patents
A kind of method of synthetical recovery nichrome Download PDFInfo
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- CN109385527A CN109385527A CN201811210770.3A CN201811210770A CN109385527A CN 109385527 A CN109385527 A CN 109385527A CN 201811210770 A CN201811210770 A CN 201811210770A CN 109385527 A CN109385527 A CN 109385527A
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- Prior art keywords
- nichrome
- synthetical recovery
- biscuit
- reducing agent
- industrial waste
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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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- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
-
- 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
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
-
- 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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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The present invention relates to chemical metallurgy technical fields, to solve the problems, such as that traditional industry waste material resource utilization is low, pollutes environment, a kind of method of synthetical recovery nichrome is provided, comprising the following steps: (1) lateritic nickel ore is added in industrial waste and is uniformly mixed, sieving approach obtains mixing；(2) flux is added in mixing, deploys moisture content, suppresses balling-up, obtains biscuit；(3) heating reduction treatment is carried out to biscuit, is then transferred to fuse process in electric furnace, casting is come out of the stove to get nichrome.The present invention is using industrial waste as primary raw material, change traditional nickel, the mode that chromium individually recycles, it is proposed the comprehensive thinking for extracting nichrome, process conditions are easily controllable, and low energy consumption, it is novel environment-friendly building materials that clinker, which is sent to workshop purification, nichrome becomes stainless steel base-material, accomplishes that multi-purpose content, an object are used in conjunction, it recycles, resource utilization is high.
Description
Technical field
The present invention relates to chemical metallurgy technical field more particularly to a kind of methods of synthetical recovery nichrome.
Background technique
Industrial waste, though it means the original utility value of the forfeiture generated in industrial production activities or does not lose exploitation value
Solid-state, semisolid, liquid and gaseous article, the substance being placed in container for being worth but being abandoned or abandoning.With urbanization
There are more and more industrial solid castoffs in the acceleration of process and stepping up for living standards of the people, China, largely
The problem of industrial waste pollutes the environment, jeopardizes the physical and mental health of people, how industrial waste is effectively treated is extremely urgent.
The processing of existing industrial waste mostly uses the mode of stacking, landfill or burning, can be to soil, water body, atmosphere
Generate different degrees of pollution.The accumulating amount of industrial waste is bigger, and land occupation is more, and harmful constituent is easy contaminated land, destroys soil
The ecological balance in earth, when in contaminated soil sex pheromone and other harmful substances with natural rainfall, runoff or seepage flow
The health of people may be further endangered after into water body.The landfill of noxious industry waste material, soil property generation can be made to be acidified, alkalize,
The corruptions such as hardening, seriously polluted place even vegetation do not give birth to.A large amount of industrial solid wastes, which are discharged into rivers,lakes and seas, to be made
At siltation, to block river, corrode farmland, endanger hydraulic engineering.Poisonous and harmful solid waste enters water body, can make certain
Waters becomes biological dead zone；It being contacted with water (rainwater, surface water), the poisonous and harmful element in waste, which is necessarily immersed to filter out, to be come, from
And make that acidity occurs for water body, alkalinity, eutrophication, mineralising, suspended matter increase, or even the variation such as poison, endanger biological and human body
Health.The harmful components in the solid waste stacked are burned due to volatilizing and chemically reacting, toxic gas is generated, leads to atmosphere
Pollution.
" ground surface material produced using industrial waste " is disclosed in Chinese patent literature, notification number is
CN106064922A, the invention prepare ground surface material using waste and old cullet, broken building waste and slag as primary raw material, still
The invention is low to the resource utilization of industrial waste, underuses metal values in industrial waste.Therefore, according to industry
The ingredient of waste material carries out recycling and rationally recycles, and has important research significance.
Summary of the invention
The present invention provides a kind of utilization to overcome the problems, such as that traditional industry waste material resource utilization is low, pollutes environment
The method of industrial waste synthetical recovery nichrome, low energy consumption for this method, changes traditional nickel, the mode that chromium individually refines, improves
The resource utilization of industrial waste, turns waste into wealth.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of method of synthetical recovery nichrome, comprising the following steps:
(1) lateritic nickel ore is added in industrial waste and is uniformly mixed, sieving approach obtains mixing；
(2) flux is added in mixing, deploys moisture content, suppresses balling-up, obtains biscuit；
(3) heating reduction treatment is carried out to biscuit, is then transferred to fuse process in electric furnace, casting is come out of the stove to get nichrome.
Industrial waste of the present invention includes sludge obtained by sewage treatment, Environmental-protecting dust-removing ash, flue dust and industrial acid-washed mud
Deng waste utilization is from a wealth of sources, at low cost.It is novel environment-friendly building materials, nickel that clinker caused by the present invention, which is sent to workshop purification,
Evanohm becomes stainless steel base-material, accomplishes that multi-purpose content, an object are used in conjunction, recycle, and resource utilization is high.
Preferably, the industrial waste includes the following components'mass percentage in step (1): Ni 1.5 ~ 3.5%,
Cr 3 ~ 15%, Fe 10 ~ 40%, P 0.01 ~ 0.3%, CaO 25%, MgO 0.9%, SiO21.35%, H2O surplus.
Preferably, the addition mass ratio of the lateritic nickel ore and industrial waste is 3:7 in step (1).
Preferably, the partial size of the mixing is 10 ~ 30mm in step (1).
Preferably, the flux is quartz in step (2)；Addition mass ratio of the solvent in mixing is 3.5
~7.5%。
Preferably, deploying the process conditions of moisture content in step (2) are as follows: utilize rotary kiln heat regulation to 350 ~ 400
DEG C, being dried to moisture content in material is 15 ~ 20wt%, may insure biscuit balling-up within the scope of the moisture content, is not easy to be scattered.It utilizes
Rotary kiln heat to make full use of heat, energy-saving, resource optimization.
Preferably, in step (3), the technique of reduction treatment are as follows: reducing agent is added in biscuit, then in 650 ~ 750
It is heat-treated under the conditions of DEG C temperature；Addition mass ratio of the reducing agent in biscuit is 8 ~ 15%.
The present invention reaches 650 using the acidity in industrial waste in rotary kiln prereduction removal biscuit, oiliness impurity, temperature
At ~ 750 DEG C, it is transferred to electric furnace fusion.
Preferably, the reducing agent is carbonaceous reducing agent, the carbonaceous reducing agent is coke or blue carbon.
Preferably, the carbonaceous reducing agent by coke or blue carbon and hydroxy ethylene -1,1- di 2 ethylhexyl phosphonic acid (HEDP) according to
Mass ratio (10 ~ 15): 1 compounding is made.
HEDP is a pentabasic acid, it is ionizable go out 5 hydrogen ions, after ionization formed 5 coordinating oxygen atoms, can and Ca2+、
Mg2+、Fe2+、Fe3+、Cu2+、Zn2+、Al3+The stable chelate of equal formation.Chelating agent is compounded with carbonaceous reducing agent, is assigned
The certain metal complexing capability of carbonaceous reducing agent in reduction process, while being complexed more metals from industrial waste, avoids
A large amount of smog is generated, to improve the rate of recovery of nichrome.
Preferably, the temperature come out of the stove of casting is greater than 1600 DEG C, and the synthesis of element is returned under the conditions of the temperature in step (3)
Yield and slag, iron separation casting effect are ideal.
Preferably, on the basis of nichrome gross mass, the nichrome includes following quality hundred in step (3)
Divide the component of ratio: Ni 7.51%, Cr 7.90%, P 0.033%, S 0.311%, Si 3.52%, C 2.26%, surplus are impurity.
Therefore, the invention has the following beneficial effects: using industrial waste as primary raw material, change traditional nickel, chromium are individually returned
The mode of receipts proposes the comprehensive thinking for extracting nichrome, and process conditions are easily controllable, and low energy consumption, and clinker send to workshop and refines
For novel environment-friendly building materials, nichrome becomes stainless steel base-material, accomplishes that multi-purpose content, an object are used in conjunction, recycle, resource benefit
With rate height.
Specific embodiment
Below by specific embodiment, the technical solutions of the present invention will be further described.
In the present invention, if not refering in particular to, all devices and raw material is commercially available or the industry is common are following
Method in embodiment is unless otherwise instructed conventional method in that art.
Embodiment 1
(1) lateritic nickel ore is uniformly mixed with industrial waste according to mass ratio 3:7, sieving approach, obtaining partial size is 10mm mixing；Its
In, industrial waste includes the following components'mass percentage: Ni 1.5%, Cr15%, Fe 10%, P 0.3%, CaO 25%, MgO
0.9%, SiO21.35%, H2O surplus；
(2) quartz of 3.5wt% is added in mixing, deploys moisture content using rotary kiln heat regulation to 350 DEG C and is dried to object
Moisture content is 15wt% in material, suppresses balling-up, obtains biscuit；
(3) heating reduction treatment is carried out to biscuit, the coke of 8wt% is added in biscuit, it is then hot under the conditions of 750 DEG C of temperature
Processing, is then transferred to fuse process in electric furnace, casts and come out of the stove to get nichrome under the conditions of 1800 DEG C.
The ingredient of the resulting nichrome of the present embodiment is detected, result is the nickel on the basis of nichrome gross mass
Evanohm includes the following components'mass percentage: Ni 7.51%, Cr 7.90%, P 0.033%, S 0.311, Si 3.52%, C
2.26, surplus is impurity.
Embodiment 2
(1) lateritic nickel ore is uniformly mixed with industrial waste according to mass ratio 3:7, sieving approach, obtaining partial size is 30mm mixing；Its
In, industrial waste includes the following components'mass percentage: Ni 3.5%, Cr 3%, Fe 40%, P 0.01%, CaO 25%, MgO
0.9%, SiO21.35%, H2O surplus；
(2) quartz of 7.5wt% is added in mixing, deploys moisture content using rotary kiln heat regulation to 350 DEG C and is dried to object
Moisture content is 20wt% in material, suppresses balling-up, obtains biscuit；
(3) heating reduction treatment is carried out to biscuit, the blue carbon of 15wt% is added in biscuit, it is then hot under the conditions of 650 DEG C of temperature
Processing, is then transferred to fuse process in electric furnace, casts and come out of the stove to get nichrome under the conditions of 1900 DEG C.
The ingredient of the resulting nichrome of the present embodiment is detected, result is the nickel on the basis of nichrome gross mass
Evanohm includes the following components'mass percentage: Ni 7.91%, Cr 7.10%, P 0.013%, S 0.285, Si 3.21%, C
2.05%, surplus is impurity.
Embodiment 3
(1) lateritic nickel ore is uniformly mixed with industrial waste according to mass ratio 3:7, sieving approach, obtaining partial size is 25mm mixing；Its
In, industrial waste includes the following components'mass percentage: Ni 2.0%, Cr 10%, Fe 30%, P 0.25%, CaO 25%, MgO
0.9%, SiO21.35%, H2O surplus；
(2) quartz of 4.0wt% is added in mixing, deploys moisture content using rotary kiln heat regulation to 380 DEG C and is dried to object
Moisture content is 18wt% in material, suppresses balling-up, obtains biscuit；
(3) heating reduction treatment is carried out to biscuit, the carbonaceous reducing agent of 10wt% is added in biscuit, the carbonaceous reducing agent is by orchid
Charcoal and hydroxy ethylene -1,1- di 2 ethylhexyl phosphonic acid (HEDP) are compounded according to mass ratio 10:1 to be made；Then hot under the conditions of 700 DEG C of temperature
Processing, is then transferred to fuse process in electric furnace, casts and come out of the stove to get nichrome under the conditions of 2000 DEG C.
The ingredient of the resulting nichrome of the present embodiment is detected, result is the nickel on the basis of nichrome gross mass
Evanohm includes the following components'mass percentage: Ni 7.48%, Cr 7.52%, P 0.035%, S 0.289%, Si 3.50%, C
1.98%, surplus is impurity.
Embodiment 4
(1) lateritic nickel ore is uniformly mixed with industrial waste according to mass ratio 3:7, sieving approach, it is mixed for 10 ~ 30mm obtains partial size
Material；Wherein, industrial waste includes the following components'mass percentage: Ni 2.0%, Cr 12%, Fe 20%, P 0.1%, CaO
25%, MgO 0.9%, SiO21.35%, H2O surplus；
(2) quartz of 4.6wt% is added in mixing, deploys moisture content using rotary kiln heat regulation to 380 DEG C and is dried to object
Moisture content is 18wt% in material, suppresses balling-up, obtains biscuit；
(3) heating reduction treatment is carried out to biscuit, the carbonaceous reducing agent of 12wt% is added in biscuit, the carbonaceous reducing agent is by coke
Charcoal and hydroxy ethylene -1,1- di 2 ethylhexyl phosphonic acid (HEDP) are compounded according to mass ratio 15:1 to be made；Then hot under the conditions of 680 DEG C of temperature
Processing, is then transferred to fuse process in electric furnace, casts and come out of the stove to get nichrome under the conditions of 1855 DEG C.
The ingredient of the resulting nichrome of the present embodiment is detected, result is the nickel on the basis of nichrome gross mass
Evanohm includes the following components'mass percentage: Ni 7.98%, Cr 7.65%, P 0.014%, S 0.311%, Si 3.52%, C
2.54%, surplus is impurity.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, and is not surpassing
There are also other variations and modifications under the premise of technical solution documented by claim out.
Claims (10)
1. a kind of method of synthetical recovery nichrome, which comprises the following steps:
(1) lateritic nickel ore is added in industrial waste and is uniformly mixed, sieving approach obtains mixing；
(2) flux is added in mixing, deploys moisture content, suppresses balling-up, obtains biscuit；
(3) heating reduction treatment is carried out to biscuit, is then transferred to fuse process in electric furnace, casting is come out of the stove to get nichrome.
2. a kind of method of synthetical recovery nichrome according to claim 1, which is characterized in that described in step (1)
Industrial waste includes the following components'mass percentage: Ni 1.5 ~ 3.5%, Cr 3 ~ 15%, Fe 10 ~ 40%, P 0.01 ~ 0.3%,
CaO 25%, MgO 0.9%, SiO21.35%, H2O surplus.
3. a kind of method of synthetical recovery nichrome according to claim 1, which is characterized in that described in step (1)
The addition mass ratio of lateritic nickel ore and industrial waste is 3:7.
4. a kind of method of synthetical recovery nichrome according to claim 1, which is characterized in that described in step (1)
The partial size of mixing is 10 ~ 30mm.
5. a kind of method of synthetical recovery nichrome according to claim 1, which is characterized in that described in step (2)
Flux is quartz；Addition mass ratio of the solvent in mixing is 3.5 ~ 7.5%.
6. a kind of method of synthetical recovery nichrome according to claim 1, which is characterized in that in step (2), allotment
The process conditions of moisture content are as follows: using rotary kiln heat regulation to 350 ~ 400 DEG C, being dried to moisture content in material is 15 ~ 20wt%.
7. a kind of method of synthetical recovery nichrome according to claim 1, which is characterized in that in step (3), reduction
The technique of processing are as follows: reducing agent is added in biscuit, is then heat-treated under the conditions of 650 ~ 750 DEG C of temperature；The reducing agent exists
Addition mass ratio in biscuit is 8 ~ 15%.
8. a kind of method of synthetical recovery nichrome according to claim 7, which is characterized in that the reducing agent is carbon
Matter reducing agent, the carbonaceous reducing agent are coke or blue carbon.
9. a kind of method of synthetical recovery nichrome according to claim 7, which is characterized in that the reducing agent is by coke
Charcoal or blue carbon and hydroxy ethylene -1,1- di 2 ethylhexyl phosphonic acid are according to mass ratio (10 ~ 15): 1 compounding is made.
10. a kind of method of synthetical recovery nichrome according to claim 1, which is characterized in that in step (3), pour
The temperature for casting out furnace is greater than 1600 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811210770.3A CN109385527B (en) | 2018-10-17 | 2018-10-17 | Method for comprehensively recovering nickel-chromium alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811210770.3A CN109385527B (en) | 2018-10-17 | 2018-10-17 | Method for comprehensively recovering nickel-chromium alloy |
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| CN109385527B CN109385527B (en) | 2020-02-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317951A (en) * | 2019-07-16 | 2019-10-11 | 嘉善助远再生资源回收有限公司 | A method of nichrome is produced using dedusting ash of stainless steel and pickling sludge |
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| WO2014133421A1 (en) * | 2014-04-02 | 2014-09-04 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Method for processing laterite nickel ore with direct production of ferronickel |
| CN104630476A (en) * | 2015-01-30 | 2015-05-20 | 福建绿能资源再生科技有限公司 | Method for preparing inconel by using heavy metal sludge |
| CN106702163A (en) * | 2016-12-23 | 2017-05-24 | 宝钢德盛不锈钢有限公司 | Method for recovering harmless ferronickel alloys from stainless steel sludge |
| CN107254619A (en) * | 2017-04-19 | 2017-10-17 | 广西盛隆冶金有限公司 | A kind of method that sea sand ore deposit and lateritic nickel ore grandidierite obtain the nichrome of titanium containing vanadium |
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2018
- 2018-10-17 CN CN201811210770.3A patent/CN109385527B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526030A (en) * | 2013-09-27 | 2014-01-22 | 泰州永兴合金材料科技有限公司 | Method for smelting chromel alloy by stainless steel dedusting ash and laterite-nickel ore |
| WO2014133421A1 (en) * | 2014-04-02 | 2014-09-04 | Общество С Ограниченной Ответственностью "Ви Холдинг" | Method for processing laterite nickel ore with direct production of ferronickel |
| CN104630476A (en) * | 2015-01-30 | 2015-05-20 | 福建绿能资源再生科技有限公司 | Method for preparing inconel by using heavy metal sludge |
| CN106702163A (en) * | 2016-12-23 | 2017-05-24 | 宝钢德盛不锈钢有限公司 | Method for recovering harmless ferronickel alloys from stainless steel sludge |
| CN107254619A (en) * | 2017-04-19 | 2017-10-17 | 广西盛隆冶金有限公司 | A kind of method that sea sand ore deposit and lateritic nickel ore grandidierite obtain the nichrome of titanium containing vanadium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317951A (en) * | 2019-07-16 | 2019-10-11 | 嘉善助远再生资源回收有限公司 | A method of nichrome is produced using dedusting ash of stainless steel and pickling sludge |
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| CN109385527B (en) | 2020-02-21 |
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