CN107012316B - With the method for the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C - Google Patents
With the method for the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C Download PDFInfo
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- CN107012316B CN107012316B CN201710223275.5A CN201710223275A CN107012316B CN 107012316 B CN107012316 B CN 107012316B CN 201710223275 A CN201710223275 A CN 201710223275A CN 107012316 B CN107012316 B CN 107012316B
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- nickel ore
- lateritic nickel
- micro
- regularization
- electrolysis
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Classifications
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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
- C22B1/02—Roasting processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B23/023—Obtaining nickel or cobalt by dry processes with formation of ferro-nickel or ferro-cobalt
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
Abstract
The present invention provides a kind of method with the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, belongs to technical field of resource utilization.The preparation method will be prepared into carbonaceous pelletizing after lateritic nickel ore, carbonaceous reducing agent, water mixing, reduction roasting under the conditions of 900~1300 DEG C of starvations after carbonaceous pelletizing drying obtains the more first micro-electrolysis stuffings of Regularization Fe-Ni-C.This technique realizes the efficient utilization to lateritic nickel ore, has the advantages that raw material sources are extensive, flow is short, at low cost, added value of product is high.The more first micro-electrolysis stuffings of Regularization Fe-Ni-C provided by the invention are applied to Industrial Wastewater Treatment, can effectively reduce the COD and coloration of waste water, operation using effect is stablized.
Description
Technical field
The present invention relates to technical field of resource utilization, particularly relate to a kind of more with lateritic nickel ore production Regularization Fe-Ni-C
The method of first micro-electrolysis stuffing.
Background technology
Lateritic nickel ore is veneer of crust weathering type mineral deposit, is mainly distributed on Pacific Rim subtropical zone-tropical rainy area, red
Tropic countries within 30 degree of diatom north and south.The nickeliferous grade of lateritic nickel ore is very stable, nickeliferous range 0.8~
1.8%, the grade of the high lateritic nickel ore nickel of fraction grades is up to 2~3%, while Iron grade is also higher, generally 10%~
50%.Laterite large storage capacity, it is resourceful, and preservation is in earth's surface, quite convenient for Mining Transport, can open work, mining at
This is low, and dressing and smelting process tends to be ripe.Currently, lateritic nickel ore is mainly used for smelting ferronickel.
Fe-C Micro Electrolysis Method is a kind of technique of Applied Electrochemistry principle processing waste water, also referred to as internal electrolysis, utilizes anode
The potential difference of 1.2V handles pollutant between (iron) and cathode (carbon), big, high toxicity, height particular for organic concentration
The processing of coloration, difficult biochemical waste water, can substantially cut down chroma in waste water and COD, improve its biodegradability.In Fe-C Micro Electrolysis Method
On the basis of, the method that developed a variety of bimetallics and multiple catalyzing Inner electrolysis, including Fe-Cu, Fe-Ni, Fe-Co, Fe-
Pd, Fe-Cu-C, Fe-Ni-C etc., Cu, Ni, Co, Pd, which substitute C, can obtain the potential difference of bigger, accelerate the corrosion of Zero-valent Iron, to
Improve micro-electrolysis stuffing degradation of contaminant effect.
Traditional micro-electrolysis stuffing is to mix iron filings, activated carbon and non-ferrous metal catalyst by proportion, molding, be sintered system
At such as production Fe-Ni-C micro-electrolysis stuffings, the raw material used is metal iron powder, nickel powder and activated carbon.Because of the raw material used
The problems such as price is high, causes filler material of high cost, and product price is high.
Invention content
The technical problem to be solved in the present invention is to provide a kind of with the more first light electrolysis of lateritic nickel ore production Regularization Fe-Ni-C
The method of filler.
This method specifically comprises the following steps：
(1) carbonaceous pelletizing is prepared：Lateritic nickel ore is crushed to -1mm, by broken lateritic nickel ore and carbonaceous reducing agent and
Additive adds 10%~25% water pelletizing or pressure ball after being mixed in a certain ratio uniformly, be prepared into carbonaceous pelletizing；
(2) reduction roasting：After carbonaceous pelletizing drying obtained by step (1), under the conditions of 900 DEG C~1300 DEG C of starvations
Reduction roasting 30min~100min is carried out, the roasted product of nickel-containing iron alloy particle and carbon granules is generated, then in isolating oxygen gas bar
It is cooling under part, obtain the more first micro-electrolysis stuffings of Regularization Fe-Ni-C.In roasting process, iron mineral is reduced to metallic iron, nickel minerals
Object reduced metal nickel, metallic nickel fuse into formation dilval particle in metallic iron.Additive act as promoting in roasting process
Into the reduction of iron mineral and nickel mineral, reduces reaction temperature and shorten the reaction time.Because the carbonaceous reducing agent of addition is excessive, roasting
It burns in product with the presence of carbon residue, cathode of the carbon residue as filler.
Wherein, the iron content of lateritic nickel ore used in step (1) is more than 30%, and nickel content is more than 0.5%.Iron, nickel content compared with
Low lateritic nickel ore can also be used for producing after improving iron content to 30% or more, nickel content to 0.5% or more by ore dressing means
The more first micro-electrolysis stuffings of Regularization Fe-Ni-C.
Carbonaceous reducing agent used in step (1) is one or more combinations in coal, activated carbon, coke.
Additive in step (1) is one or more combinations in calcium oxide, sodium carbonate, fluorite, borax.
Lateritic nickel ore in step (1), carbonaceous reducing agent, additive mass ratio be 100：(20~50)：(1~10).
Reduction roasting carries out under the conditions of starvation in step (2), and product is cooling under the conditions of starvation after roasting.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In said program, directly by the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, there are raw material sources
Extensively, feature cheap, production procedure is short, gained Fe-Ni-C is more, and first micro-electrolysis stuffing is applied to processing industrial wastewater, can
The COD and coloration of waste water are effectively reduced, operation using effect is stablized.
Description of the drawings
Fig. 1 is that the lateritic nickel ore of the present invention produces the method flow diagram of the more first micro-electrolysis stuffings of Regularization Fe-Ni-C.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of method of the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, technological process
As shown in Figure 1, including dispensing, pelletizing/pressure ball, drying, reduction roasting, cooling down, give with reference to specific embodiment
Explanation.
Embodiment 1
The multielement analysis of certain lateritic nickel ore is shown in Table 1, with being before crushed to -1mm.
The multielement analysis of 1 lateritic nickel ore of table
| Ingredient | TFe | Ni | SiO2 | Al2O3 | MgO | CaO |
| Content (%) | 41.07 | 1.89 | 15.64 | 4.35 | 5.32 | 1.43 |
By lateritic nickel ore：Carbonaceous reducing agent：Additive in mass ratio 100：50：5 weigh it is uniformly mixed, then plus 12%
Water mixing.Carbonaceous reducing agent is anthracite, and additive is calcium oxide, and anthracite and calcium oxide are industrial products.By mixture
Material is prepared into carbonaceous pelletizing on two pairs of rollers ball press, and carbonaceous pelletizing is dried at 105 DEG C.Carbonaceous pelletizing is put into atmosphere furnace,
Nitrogen charging gas shielded is warming up to 1150 DEG C, then keeps the temperature 1h, is cooled down under nitrogen protection with stove after roasting, obtained Regularization
The more first micro-electrolysis stuffings of Fe-Ni-C.
Certain silk dye transfer waste water (coloration is handled using the more first micro-electrolysis stuffings of Regularization Fe-Ni-C manufactured in the present embodiment
About 800 times, COD is about 1400mg/L, pH：5.3~5.5), under conditions of hydraulic detention time is 7h, chroma in waste water removal
Rate is 84%, COD removal efficiency 50%；Reactor continuous operation 1 month does not find that apparent hardened phenomenon, operation are more steady
It is fixed.
Embodiment 2
The multielement analysis of certain lateritic nickel ore is shown in Table 2, with being before crushed to -1mm.
The multielement analysis of 2 lateritic nickel ore of table
| Ingredient | TFe | Ni | SiO2 | Al2O3 | MgO | CaO |
| Content (%) | 33.54 | 0.88 | 18.42 | 6.45 | 7.54 | 3.76 |
By lateritic nickel ore：Carbonaceous reducing agent：Additive in mass ratio 100：40：8 weigh mixing, then add 14% water mixed
It is even.The group of carbonaceous reducing agent becomes bituminous coal：Activated carbon：The mass ratio of coke is 50：30：20, bituminous coal, activated carbon, coke are
Industrial products；Additive group becomes calcium oxide：Sodium carbonate：Fluorite：Borax mass ratio is 40:30:30, calcium oxide, sodium carbonate, firefly
Stone, borax are industrial products.Mixed material is prepared into carbonaceous pelletizing on two pairs of rollers ball press, by carbonaceous pelletizing at 105 DEG C
Drying.Carbonaceous pelletizing is put into atmosphere furnace, nitrogen charging gas shielded is warming up to 1000 DEG C, then keeps the temperature 1.5h, after roasting with
Stove cools down under nitrogen protection, the more first micro-electrolysis stuffings of obtained Regularization Fe-Ni-C.
Certain industrial coking wastewater, COD are handled using the more first micro-electrolysis stuffings of Regularization Fe-Ni-C manufactured in the present embodiment
For 18000mg/L, coloration is about 13500 times.Wastewater pH is adjusted to 3 or so, under conditions of hydraulic detention time is 10h, COD
Removal rate is 52, chroma removal rate 83%.Continuous operation 6 weeks, operation treatment effect are stablized, and do not find apparent hardened phenomenon.
Embodiment 3
The multielement analysis of certain lateritic nickel ore is shown in Table 3, with being before crushed to -1mm.
The multielement analysis of 3 lateritic nickel ore of table
| Ingredient | TFe | Ni | SiO2 | Al2O3 | MgO | CaO |
| Content (%) | 30.33 | 0.78 | 19.36 | 7.87 | 4.41 | 2.65 |
By lateritic nickel ore：Carbonaceous reducing agent：Additive in mass ratio 100：38：2 weigh mixing, then add 14% water mixed
It is even.Carbonaceous reducing agent is coke, and additive group becomes sodium carbonate, and coke and sodium carbonate are industrial products.Mixed material is existed
It is prepared into carbonaceous pelletizing on two pairs of rollers ball press, carbonaceous pelletizing is dried at 105 DEG C.Carbonaceous pelletizing is put into atmosphere furnace, nitrogen charging
Gas shielded is warming up to 1250 DEG C, then keeps the temperature 0.5h, is cooled down under nitrogen protection with stove after roasting, obtained Regularization
The more first micro-electrolysis stuffings of Fe-Ni-C.
Certain industrial coking wastewater, COD are handled using the more first micro-electrolysis stuffings of Regularization Fe-Ni-C manufactured in the present embodiment
For 18000mg/L, coloration is about 13500 times.Wastewater pH is adjusted to 3 or so, under conditions of hydraulic detention time is 11h, COD
Removal rate is 48, chroma removal rate 81%.Continuous operation 6 weeks, operation treatment effect are stablized, and do not find apparent hardened phenomenon.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of method with the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, it is characterised in that：Including as follows
Step：
(1) carbonaceous pelletizing is prepared：The broken rear and carbonaceous reducing agent of lateritic nickel ore and additive are mixed in a certain ratio uniformly, so
Afterwards plus water pelletizing or pressure ball, it is prepared into carbonaceous pelletizing；
(2) reduction roasting：After carbonaceous pelletizing drying obtained by step (1), carried out under the conditions of 900 DEG C~1300 DEG C of starvations
Reduction roasting generates the roasted product of nickel-containing iron alloy particle and carbon granules, then cooling under the conditions of starvation, obtains regular
Change the more first micro-electrolysis stuffings of Fe-Ni-C；
The iron content of lateritic nickel ore is more than 30% in the step (1), and nickel content is more than 0.5%；
The mass ratio of lateritic nickel ore, carbonaceous reducing agent and additive is 100 in the step (1):(20~50):(1~10)；
Additive is one or more combinations in calcium oxide, sodium carbonate, fluorite, borax in the step (1).
2. the method according to claim 1 with the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, special
Sign is：Carbonaceous reducing agent is one or more combinations in coal, activated carbon, coke in the step (1).
3. the method according to claim 1 with the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, special
Sign is：Lateritic nickel ore granularity is less than 1mm in the step (1).
4. the method according to claim 1 with the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, special
Sign is：The additive amount of water is the 10%~25% of lateritic nickel ore quality in the step (1).
5. the method according to claim 1 with the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C, special
Sign is：The reduction roasting time is 30min~100min in the step (2).
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| CN201710223275.5A CN107012316B (en) | 2017-04-07 | 2017-04-07 | With the method for the more first micro-electrolysis stuffings of lateritic nickel ore production Regularization Fe-Ni-C |
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| CN107012316B true CN107012316B (en) | 2018-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101838034B (en) * | 2010-05-27 | 2011-07-20 | 天津大学 | High efficiency hardening resistant micro-electrolysis material and preparation method thereof |
| CN102557201B (en) * | 2010-12-17 | 2014-02-26 | 上海洗霸科技股份有限公司 | Micro-electrolysis filling material and preparation method thereof |
| CN102303915A (en) * | 2011-05-27 | 2012-01-04 | 杨祺 | Method for preparing microelectrolysis filler by using various industrial solid wastes |
| CN104495988B (en) * | 2014-12-02 | 2016-04-13 | 刘达苏 | The production method of ball-type iron-carbon micro-electrolysis filler |
| CN104628091B (en) * | 2015-01-24 | 2016-05-04 | 徐艳萍 | A kind of multiple catalyzing micro-electrolysis stuffing and preparation method thereof and application |
| CN106277225A (en) * | 2016-09-14 | 2017-01-04 | 江西理工大学 | The method producing regular iron-carbon micro-electrolysis filler with high ferro copper ashes |
| CN106219689A (en) * | 2016-09-14 | 2016-12-14 | 江西理工大学 | The method producing regular iron-carbon micro-electrolysis filler with high ferro cyanidation tailings |
| CN106277224A (en) * | 2016-09-14 | 2017-01-04 | 江西理工大学 | The method producing regular iron-carbon micro-electrolysis filler by iron red mud |
| CN106335972A (en) * | 2016-11-01 | 2017-01-18 | 河南城建学院 | Iron-carbon microelectrolysis material for paraquat pesticide wastewater treatment and wastewater treatment method |
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