CN104018008A - Method for producing nickel iron by laterite-nickel ore flash furnace reduction smelting - Google Patents
Method for producing nickel iron by laterite-nickel ore flash furnace reduction smelting Download PDFInfo
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Abstract
The invention relates to a method for producing nickel iron by laterite-nickel ore flash furnace reduction smelting, belonging to a pyrogenic-process smelting technique. The method comprises the following steps: I. material preparation: crushing, grinding and drying laterite-nickel ores for later use, and sending blind coal, lime and fuel soft coal into bays for later use; II. proportioning: proportionally preparing a reducer and a modifier; III. smelting: spraying fuel coal and air into the flash reducing furnace, continuously and proportionally spraying the laterite-nickel ores/reducing coal/lime mixture, and smelting at high temperature; and IV. separation: deeply reducing and separating nickel iron and molten slag at the tail end of the bottom of the flash furnace, and discharging the nickel iron in the lower position and discharging the molten slag in the higher position. The nickel content grade and nickel recovery rate are controlled by controlling the reduction smelting conditions: when the carbon monoxide content is 5%, the nickel content grade of the nickel iron is 30%, and the nickel recovery rate is 93%; and when the carbon monoxide content is 40%, the nickel content grade of the nickel iron is 6%, and the nickel recovery rate is 97%. The method is an improvement of the existing flash furnace smelting technique, is used for producing nickel iron by reduction smelting, and has the advantages of short flash reduction smelting time, high speed, high production efficiency, energy saving and environmental protection.
Description
Technical field
The invention belongs to Non-ferrous Metallurgy pyrometallurgical smelting technical field, particularly relate to a kind of method that ferronickel is produced in red soil nickel ore retailoring.
Background technology
Nickel-bearing laterite by nickeliferous peridotites in the torrid zone or subtropical zone form through long-term Weathering And Leaching is rotten.Due to Weathering And Leaching, which floor mineral deposit generally forms, and top is one deck colluvium (chapeau de fer), nickeliferous lower, generally throws aside and stores up; Be limonite layer below, iron content is many, silicon magnesium is few, nickel is low, cobalt is higher, generally adopts wet processing to reclaim metal; Lower floor is the peat layer (comprising silicon magnesium nickel minerals) that is mixed with gangue again, and the high and low iron of siliceous magnesium, nickel is higher, cobalt is lower, and this class ore deposit generally adopts thermal process to process.
At present, more ripe wet processing flow process has: Caron flow process (reducing roasting ammonia soaks) and HPAL flow process (High Pressure Acid Leach).
Caron flow process is for the treatment of the mixing ore deposit of limonite or limonite and peat, and ore is first dry, and then the selective reduction in the time of 700 ℃ of the nickel in ore becomes metallic nickel (cobalt and a part of iron by together with reduce), and the metallic nickel of reduction soaks recovery through ammonia.
The shortcoming of Caron flow process has: the operations such as preparation of ore adopts and is dried, reduction, roasting, and consumed energy is large; Reclaim metal and adopt wet processing, consume number of chemical reagent; The rate of recovery of nickel and cobalt is lower than firing method process and HPAL flow process.
HPAL flow process is mainly for the treatment of limonite and a part of nontronite or montmorillonite.Pressurized acid leaching generally carries out in the autoclave of lining titanium, and 245 ℃～260 ℃ of extraction temperatures are preced with by liquid-solid separation, Separation of nickel and cobalt, production electricity nickel, nickel oxide or nickel, and some plant produced intermediates is as mixed nickelous sulfide cobalt or mixed Ni cobalt hydroxide.
The laterite of HPAL flow processing requires containing Mg low, conventionally containing Mg<4% (higher containing Mg, consumption acid is higher), containing the low ore of Al.
Some wet processing flow process is being tested and is assessing, as: EPAL technique, AL flow process, sour dump leaching and chlorination leaching etc.
At present, laterite storage nickel amount accounts for 70% of continental rise nickel total reserves, and by 2003, laterite mineral products nickel amount accounted for 42% of nickel ultimate production.Wherein 70% nickel is to adopt thermal process flow process to reclaim.The existing technical process that thermal process is processed laterite has traditional RKEF flow process (rotary kiln-eaf process), Dominica Ying Qiao shaft furnace-electric furnace process, Japan's large rivers and mountains rotary kiln for directly reducing method etc.
Dominica Ying Qiao shaft furnace-eaf process flow process is that laterite is produced thick ferronickel through drying and dehydrating, briquetting, employing shaft roasting production part reducing roasting nodulizing, electrosmelting, thick ferronickel refining in ladle furnace.
RKEF flow process is a kind of pyrometallurgical smelting process flow process that current laterite ore refinery generally adopts, and this technique is mainly divided into several operations: dry, roasting-prereduction, electrosmelting, refining etc.
Dry: to adopt rotary drying kiln, mainly deviate from the part free water in ore.
Roasting-prereduction: adopting rotary kiln, is mainly to deviate from remaining free water and crystal water in ore, preheating ore, selective reduction part of nickel and iron.
Electrosmelting: reducing metal nickel and part iron, slag and ferronickel are separated, produce thick ferronickel.
Refining: generally adopt ladle refining, deviate from impurity in thick ferronickel as: sulphur, phosphorus etc., meet market demands.
If production nickel matte, can join pyrite in calcining batch can and join in electric furnace, nickel is transformed into the nickel matte of low iron in electric furnace together with calcining.
Of high grade due to fine fraction nickel in laterite material, in RKEF technical process, adopt dry rotary kiln and calcination rotary kiln material handling, dust rate is high, flue dust is nickeliferous higher, adopts and hides the melting of arc ac electric arc furnace, and this electric furnace is difficult for directly processing powder, therefore flue dust needs individual curing, has increased production cost.In order to overcome above-mentioned shortcoming, offshore company has developed a kind of new technical process and has been called NST (NICKEL SMELTING TECHNOLOGY), the technology of this technical process water draw mud precalcining, material is levigate, then carry out flash drying, shower roasting, in fluidized bed furnace, carry out prereduction, direct current furnace melting roasting material, the refining of LF stove.
Japan's large rivers and mountains rotary kiln for directly reducing method is produced ferronickel, and this flow process is divided into three steps:
(1) material pre-treatment: ore grinding, mixing and briquetting, to improve kiln operation effect;
(2) smelting technology: the gathering of rotary kiln baking, metal oxide reduction and reducing metal;
(3) separating treatment: the grog of rotary kiln output adopts gravity treatment and magnetic separation to isolate Rhometal.
This is the method for unique employing rotary kiln for directly reducing melting nickel oxide in the world.
The typical composition scope of typical red soil nickel ore is as following table 1
The typical composition scope of table 1 red soil nickel ore
Domestic and international ferronickel production status:
The nickel of world production mainly contains metallic nickel, ferronickel, nickel block and other nickel product.Ferronickel is to adopt thermal process to process a kind of product that nickel laterite is produced, and ferronickel 100% is for stainless production.At present main ferronickel production countries and regions have in the world: Japan, New Caledonia, Colombia, the Dominican Republic and Greece etc.
Ferronickel is generally that nickel content is classified according to grade, and the sorting technique that domestic contrast is popular is, according to the equipment of smelting, ferronickel is divided into blast furnace ferronickel and electric furnace ferronickel, and wherein blast furnace ferronickel grade is lower, mostly nickeliferous below 8%; Electric furnace ferronickel is general nickeliferous more than 8%.According to international standard (ISO6501.1998E), ferronickel is divided into by nickel content: FeNi20 (15%～25%Ni), FeNi30 (25%～35%Ni), FeNi40 (35%～45%Ni) and FeNi50 (45%～60%Ni); Be further divided into again high-carbon (1.0%～2.5%C), middle carbon (0.030%～1.0%C) and low-carbon (LC) (<0.03%C); Low-phosphorous (<0.02%P) and high phosphorus (<0.030%P) ferronickel.
Ferronickel is a kind of of iron alloy, belongs to of the same type with ferromanganese, ferrosilicon, and mainly as stainless steel and refractory steel furnace charge, and to be mainly used in 200 be to be product with 300, is secondly for the production of structural alloy steel and cast alloy iron.China's ferronickel national standard is that GB/T25049-2010 is close with international standard.Domestic market ferronickel is divided according to grade, and ferronickel product is generally divided into low nickel product (grade is 1.5%-4.0%), middle nickel product (grade is 4%-10%) and nickelic product (grade is more than 10%).The main component index of China's production ferronickel is as shown in table 2:
Table 2 China produces ferronickel main component index
Flash smelting is the novel process of the cupric sulfide nickel ore concentrate oxidation matte smelting that gets up of RECENT DEVELOPMENTS, and the method is applied to oxidizing semlting copper ore concentrates at first.Comprise the processes such as concentrate depth drying, batching, flash smelting, blowing and slag depletion.It is efficient oxidation melting technology.This technique is that the improvement of flash smelting technique is changed to oxidizing semlting is retailoring.For the retailoring of red soil nickel ore flash, produce ferronickel, the method that ferronickel is produced in the retailoring of red soil nickel ore Flash Smelting Furnace has no reported in literature.
Summary of the invention
The technical issues that need to address of the present invention are: provide a kind of red soil nickel ore Flash Smelting Furnace retailoring to produce the method for ferronickel, it is the improvement to existing oxidizing semlting copper-nickel concentrate method, can make that the flash retailoring time is short, speed is fast, enhance productivity, energy-conserving and environment-protective.
A method for ferronickel is produced in the retailoring of red soil nickel ore Flash Smelting Furnace, it is characterized in that:
Comprise following steps
Step 1, get the raw materials ready
Comprise the preparation of red soil nickel ore Shi Gan ore deposit, reductive agent hard coal, adjusting material lime, fuel bituminous coal;
I red soil nickel ore stone passes through, after fragmentation, ore grinding, dry three operation break-downs, to produce granularity and be less than 0.1mm, and the dry ore deposit that water content is less than 1%, send dry ore storage bin standby; II reductive agent hard coal is levigate by pulverizing mill, obtains granularity and is less than 0.1mm, and the moisture reductive agent hard coal that is less than 1%, returns run coal bin by this reductive agent hard coal standby; III adjusting material lime is levigate by pulverizing mill, obtains granularity and is less than 0.1mm, and the moisture adjusting material lime that is less than 1%, send adjusting material storehouse standby in this adjusting material lime; IV fuel bituminous coal is levigate by ball mill, obtains granularity and is less than 0.1mm, and the moisture fuel bituminous coal that is less than 1%, send fuel bituminous coal storehouse standby in this fuel bituminous coal;
Step 2, batching
According to the amount of dry red soil nickel ore, allocate in proportion reductive agent hard coal and adjusting material lime into;
By dry red soil nickel ore amount 100%, calculate, it is 1%～30% of dry red soil nickel ore amount that the anthracitic amount of reductive agent is allocated in metering into, and the amount that adjusting material lime is allocated in metering into is 1%～20% of dry red soil nickel ore amount;
Step 3, melting
Bunker coal and air are sprayed in flash reduction furnace, keep flash reduction furnace temperature at 1450 ℃～1550 ℃; By step 2, carry out batching metering, then spray into continuously the compound of fragmentation, ore grinding, dried red soil nickel ore, reductive agent hard coal and adjusting material lime, keep fully melting under the reducing atmosphere condition of red soil nickel ore in Flash Smelting Furnace, red soil nickel ore completes the melt producing after flash retailoring and drops on Flash Smelting Furnace bottom in Flash Smelting Furnace; The carbon monoxide in flue gas content that reduction produces is greater than 5%, and oxygen content is less than 1%, has the excessive raw coal of going back to exist in Flash Smelting Furnace, and flue gas is through waste heat boiler recovery waste heat be down to after 300 ℃～400 ℃, and the carbon monoxide being recovered to is dry for red soil nickel ore;
Step 4, separation
In Flash Smelting Furnace bottom end, with electric furnace heat preserving method, keep temperature to continue at 1450 ℃～1550 ℃, under this condition atmosphere, the ferronickel after reduction is carried out separated with slag; Low level is put the ferronickel after ferronickel mouth discharge melting completes, the slag that high-order slag notch discharge retailoring produces; During carbon monoxide content 5%, the nickeliferous grade 30% of ferronickel, nickel recovery 93%.During carbon monoxide content 40%, the nickeliferous grade 6% of ferronickel, nickel recovery 97%.
Described step 1, get the raw materials ready
Reductive agent coke powder or petroleum coke powder are levigate by pulverizing mill, obtain granularity and are less than 1mm, and the moisture reductive agent coke powder that is less than 1%, returns run coal bin by this reductive agent coke powder standby.
Described step 2, batching
According to the amount of dry red soil nickel ore, allocate in proportion reductive agent coke powder or petroleum coke powder and adjusting material lime into;
By dry red soil nickel ore amount 100%, calculate, it is dry red soil nickel ore 1%～30% that the amount of reductive agent coke powder or petroleum coke powder is allocated in metering into; It is dry red soil nickel ore 1%～20% that the amount of adjusting material lime is allocated in metering into.
The beneficial effect producing by technique scheme the present invention is:
The present invention is that the improvement of flash smelting technique is changed to existing oxidizing semlting copper-nickel concentrate is retailoring red soil nickel ore raw ore, for the retailoring of red soil nickel ore flash, produce ferronickel, the flash retailoring time is short, speed is fast, recovery time completed within 1 minute, production efficiency is high, energy-conserving and environment-protective; It is dry for red soil nickel ore that flue gas reclaims carbon monoxide after waste heat boiler recovery waste heat and cooling, can save the energy; By controlling the reductive condition of retailoring, can control the nickeliferous grade of different ferronickels and nickel recovery, during carbon monoxide content 5%, the nickeliferous grade 30% of ferronickel, nickel recovery 93%.During carbon monoxide content 40%, the nickeliferous grade 6% of ferronickel, nickel recovery 97%.Remarkable in economical benefits, technique is simple, is easy to promote.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated:
Fig. 1 is that the process flow sheet of the method for ferronickel is produced in a kind of red soil nickel ore Flash Smelting Furnace retailoring of the present invention.
Embodiment
Embodiment 1
Step 1, get the raw materials ready
Red soil nickel ore stone, after fragmentation, ore grinding and dry three operations, is produced granularity and is less than 0.074mm, and the dry ore deposit of the moisture amount of being less than 0.5%, send dry ore storage bin standby; Reductive agent hard coal is levigate through pulverizing mill, obtains granularity and is less than 0.074mm, and the moisture reductive agent hard coal that is less than 0.5%, returns run coal bin by this reductive agent hard coal standby; Adjusting material lime is levigate by pulverizing mill, obtains granularity and is less than 0.074mm, and the moisture adjusting material lime that is less than 0.5%, send adjusting material storehouse standby in this adjusting material lime; Fuel bituminous coal is levigate by ball mill, obtains granularity and is less than 0.074mm, and the moisture fuel bituminous coal that is less than 1%, send fuel bituminous coal storehouse standby in this fuel bituminous coal.
Step 2, batching
According to the amount of dry red soil nickel ore, allocate in proportion reductive agent hard coal and adjusting material lime into;
By dry red soil nickel ore amount 100%, calculate, it is 10% of dry red soil nickel ore amount that the anthracitic amount of reductive agent is allocated in metering into, and the amount that adjusting material lime is allocated in metering into is 10% of dry red soil nickel ore amount.
Step 3, melting
Bunker coal and air are sprayed in flash reduction furnace, keep flash reduction furnace temperature at 1500 ℃; Continuous measurement sprays into the compound of fragmentation, ore grinding, dried red soil nickel ore, reductive agent hard coal and adjusting material lime, keep fully melting under the reducing atmosphere condition of red soil nickel ore in Flash Smelting Furnace, red soil nickel ore drops on Flash Smelting Furnace bottom complete retailoring in Flash Smelting Furnace after; The carbon monoxide in flue gas content 10% that reduction produces, oxygen content 0.5% (having the excessive raw coal of going back to exist), flue gas is after waste heat boiler recovery waste heat and cooling, and the carbon monoxide being recovered to is dry for red soil nickel ore.
Step 4, separation
In Flash Smelting Furnace bottom end, with electric furnace heat preserving method, maintain the temperature at 1480 ℃, under this condition atmosphere, can improve layered effect and nickel recovery, and the ferronickel after drastic reduction is carried out separated with slag; Then by low level, put ferronickel mouth discharge ferronickel, high-order slag notch discharge slag; Reductive condition by controlling retailoring is carbon monoxide in flue gas content both, can control the nickeliferous grade of different ferronickels and nickel recovery, the nickeliferous grade 24% of ferronickel, nickel recovery 94%.
Embodiment 2
Step 1, get the raw materials ready
Red soil nickel ore stone passes through, after fragmentation, ore grinding and dry three operation break-downs, to produce granularity and be less than 0.05mm, and the moisture dry ore deposit that is less than 0.4%, send dry ore storage bin standby; Reductive agent coke powder is levigate through pulverizing mill, obtains granularity and is less than 0.05mm, and the moisture reductive agent coke powder that is less than 0.4%, returns run coal bin by this reductive agent coke powder standby; Adjusting material lime is levigate through pulverizing mill, obtains granularity and is less than 0.05mm, and the moisture adjusting material lime that is less than 0.4%, send adjusting material storehouse standby in this adjusting material lime; Fuel bituminous coal is levigate through ball mill, obtains granularity and is less than 0.05mm, and the moisture fuel bituminous coal that is less than 1%, send fuel bituminous coal storehouse standby in this fuel bituminous coal.
Step 2, batching
According to the amount of dry red soil nickel ore, allocate in proportion reductive agent coke powder and adjusting material lime into;
By dry red soil nickel ore amount 100%, calculate, the amount that reductive agent coke powder is allocated in metering into is 15% of dry red soil nickel ore amount, and the amount that adjusting material lime is allocated in metering into is 15% of dry red soil nickel ore amount.
Step 3, melting
Bunker coal and air are sprayed in flash reduction furnace, keep flash reduction furnace temperature at 1550 ℃; By batching metering, spray into continuously the compound of fragmentation, ore grinding, dried red soil nickel ore, reductive agent coke powder and adjusting material lime, keep fully melting under the reducing atmosphere condition of red soil nickel ore in Flash Smelting Furnace, red soil nickel ore drops on Flash Smelting Furnace bottom complete retailoring in Flash Smelting Furnace after; The carbon monoxide in flue gas content 20% that reduction produces, oxygen content 0.4% (having the excessive raw coal of going back to exist), flue gas is after waste heat boiler recovery waste heat and cooling, and the carbon monoxide being recovered to is dry for red soil nickel ore.
Step 4, separation
In Flash Smelting Furnace bottom end, with electric furnace heat preserving method, maintain the temperature at 1500 ℃, under this condition atmosphere, can improve layered effect and nickel recovery, and the ferronickel after drastic reduction is carried out separated with slag; Then by low level, put ferronickel mouth discharge ferronickel, high-order slag notch discharge slag; Reductive condition by controlling retailoring is carbon monoxide in flue gas content both, can control the nickeliferous grade of different ferronickels and nickel recovery, the nickeliferous grade 18% of ferronickel, nickel recovery 95%.
Embodiment 3
Step 1, get the raw materials ready
Red soil nickel ore stone passes through, after fragmentation, ore grinding, dry three operation break-downs, to produce granularity and be less than 0.06mm, and the dry ore deposit that water content is less than 0.3%, send dry ore storage bin standby; Reductive agent hard coal is levigate through pulverizing mill, obtains granularity and is less than 0.06mm, and the moisture reductive agent hard coal that is less than 0.3%, returns run coal bin by this reductive agent hard coal standby; Adjusting material lime is levigate through pulverizing mill, obtains granularity and is less than 0.06mm, and the moisture adjusting material lime that is less than 0.3%, send adjusting material storehouse standby in adjusting material lime; Fuel bituminous coal is levigate through ball mill, obtains granularity and is less than 0.06mm, and the moisture fuel bituminous coal that is less than 1%, send fuel bituminous coal storehouse standby in this fuel bituminous coal.
Step 2, batching
According to the amount of dry red soil nickel ore, allocate in proportion reductive agent hard coal and adjusting material lime into;
By dry red soil nickel ore amount 100%, calculate, it is dry red soil nickel ore 20% that the anthracitic amount of reductive agent is allocated in metering into; It is dry red soil nickel ore 5% that the amount of adjusting material lime is allocated in metering into.
Step 3, melting
Bunker coal and air are sprayed in flash reduction furnace, keep flash reduction furnace temperature at 1520 ℃; By batching metering, spray into continuously the compound of fragmentation, ore grinding, dried red soil nickel ore, reductive agent hard coal and adjusting material lime, keep fully melting under the reducing atmosphere condition of red soil nickel ore in Flash Smelting Furnace, red soil nickel ore drops on Flash Smelting Furnace bottom complete retailoring in Flash Smelting Furnace after; The carbon monoxide in flue gas content 30% that reduction produces, oxygen content 0.3% (having the excessive raw coal of going back to exist), flue gas is after waste heat boiler recovery waste heat and cooling, and the carbon monoxide being recovered to is dry for red soil nickel ore.
Step 4, separation
In Flash Smelting Furnace bottom end, with electric furnace heat preserving method, maintain the temperature at 1520 ℃, under this condition atmosphere, can improve layered effect and nickel recovery, and the ferronickel after drastic reduction is carried out separated with slag; Then by low level, put ferronickel mouth discharge ferronickel, high-order slag notch discharge slag; Reductive condition by controlling retailoring is carbon monoxide in flue gas content both, can control the nickeliferous grade of different ferronickels and nickel recovery, the nickeliferous grade 12% of ferronickel, nickel recovery 96%.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make on the basis of the above description other multi-form variation or changes.Here exhaustive without also giving all embodiments.And these belong to the still row in protection scope of the present invention of apparent variation that technical scheme of the present invention amplifies out or change.
Claims (3)
1. a method for ferronickel is produced in the retailoring of red soil nickel ore Flash Smelting Furnace, it is characterized in that:
Comprise following steps
Step 1, get the raw materials ready
Comprise the preparation of red soil nickel ore Shi Gan ore deposit, reductive agent hard coal, adjusting material lime, fuel bituminous coal;
I red soil nickel ore stone passes through, after fragmentation, ore grinding, dry three operation break-downs, to produce granularity and be less than 0.1mm, and the dry ore deposit that water content is less than 1%, send dry ore storage bin standby; II reductive agent hard coal is levigate by pulverizing mill, obtains granularity and is less than 0.1mm, and the moisture reductive agent hard coal that is less than 1%, returns run coal bin by this reductive agent hard coal standby; III adjusting material lime is levigate by pulverizing mill, obtains granularity and is less than 0.1mm, and the moisture adjusting material lime that is less than 1%, send adjusting material storehouse standby in this adjusting material lime; IV fuel bituminous coal is levigate by ball mill, obtains granularity and is less than 0.1mm, and the moisture fuel bituminous coal that is less than 1%, send fuel bituminous coal storehouse standby in this fuel bituminous coal;
Step 2, batching
According to the amount of dry red soil nickel ore, allocate in proportion reductive agent hard coal and adjusting material lime into;
By dry red soil nickel ore amount 100%, calculate, it is 1%～30% of dry red soil nickel ore amount that the anthracitic amount of reductive agent is allocated in metering into, and the amount that adjusting material lime is allocated in metering into is 1%～20% of dry red soil nickel ore amount;
Step 3, melting
Bunker coal and air are sprayed in flash reduction furnace, keep flash reduction furnace temperature at 1450 ℃～1550 ℃; By step 2, carry out batching metering, then spray into continuously the compound of fragmentation, ore grinding, dried red soil nickel ore, reductive agent hard coal and adjusting material lime, keep fully melting under the reducing atmosphere condition of red soil nickel ore in Flash Smelting Furnace, red soil nickel ore completes the melt producing after flash retailoring and drops on Flash Smelting Furnace bottom in Flash Smelting Furnace; The carbon monoxide in flue gas content that reduction produces is greater than 5%, and oxygen content is less than 1%, has the excessive raw coal of going back to exist in Flash Smelting Furnace, and flue gas is through waste heat boiler recovery waste heat be down to after 300 ℃～400 ℃, and the carbon monoxide being recovered to is dry for red soil nickel ore;
Step 4, separation
In Flash Smelting Furnace bottom end, with electric furnace heat preserving method, keep temperature to continue at 1450 ℃～1550 ℃, under this condition atmosphere, the ferronickel after reduction is carried out separated with slag; Low level is put the ferronickel after ferronickel mouth discharge melting completes, the slag that high-order slag notch discharge retailoring produces; During carbon monoxide content 5%, the nickeliferous grade 30% of ferronickel, nickel recovery 93%.During carbon monoxide content 40%, the nickeliferous grade 6% of ferronickel, nickel recovery 97%.
2. the method that ferronickel is produced in a kind of red soil nickel ore Flash Smelting Furnace retailoring according to claim 1, is characterized in that:
Described step 1, get the raw materials ready
Reductive agent coke powder or petroleum coke powder are levigate by pulverizing mill, obtain granularity and are less than 1mm, and the moisture reductive agent coke powder that is less than 1%, returns run coal bin by this reductive agent coke powder standby.
3. the method that ferronickel is produced in a kind of red soil nickel ore Flash Smelting Furnace retailoring according to claim 1, is characterized in that:
Described step 2, batching
According to the amount of dry red soil nickel ore, allocate in proportion reductive agent coke powder or petroleum coke powder and adjusting material lime into;
By dry red soil nickel ore amount 100%, calculate, it is dry red soil nickel ore 1%～30% that the amount of reductive agent coke powder, petroleum coke powder is allocated in metering into; It is dry red soil nickel ore 1%～20% that the amount of adjusting material lime is allocated in metering into.
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Cited By (7)
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| CN104451195A (en) * | 2014-11-21 | 2015-03-25 | 邱江波 | Flash smelting method for nickel laterite ores |
| CN104451125A (en) * | 2014-11-21 | 2015-03-25 | 邱江波 | Flash roasting treatment method for nickel laterite ores |
| CN105861834A (en) * | 2016-04-28 | 2016-08-17 | 天津闪速炼铁技术有限公司 | Swirling flow flash smelting process |
| CN106521188A (en) * | 2016-11-02 | 2017-03-22 | 阳谷祥光铜业有限公司 | Rotational flow nickel smelting method and rotational flow nickel smelting device |
| CN107312939A (en) * | 2017-08-30 | 2017-11-03 | 徐州贝克福尔节能环保技术有限公司 | A kind of lateritic nickel ore powder state smelting ferronickel equipment and technique |
| CN108239708A (en) * | 2017-08-09 | 2018-07-03 | 徐州贝克福尔节能环保技术有限公司 | A kind of dry method, which suspends, is sintered Flash Smelting ferronickel Processes and apparatus |
| CN110527848A (en) * | 2019-09-30 | 2019-12-03 | 青岛中资中程集团股份有限公司 | A kind of method of lateritic nickel ore Flash Smelting Furnace reduction melting production ferronickel |
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| CN102690919A (en) * | 2012-06-01 | 2012-09-26 | 中国瑞林工程技术有限公司 | Flash smelting method of iron |
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| CN102690919A (en) * | 2012-06-01 | 2012-09-26 | 中国瑞林工程技术有限公司 | Flash smelting method of iron |
| CN102703733A (en) * | 2012-06-18 | 2012-10-03 | 中国恩菲工程技术有限公司 | Nickel smelting production method of laterite nickel ore molten pool |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451195A (en) * | 2014-11-21 | 2015-03-25 | 邱江波 | Flash smelting method for nickel laterite ores |
| CN104451125A (en) * | 2014-11-21 | 2015-03-25 | 邱江波 | Flash roasting treatment method for nickel laterite ores |
| CN104451195B (en) * | 2014-11-21 | 2016-05-18 | 邱江波 | The flash smelting method of lateritic nickel ore |
| CN105861834A (en) * | 2016-04-28 | 2016-08-17 | 天津闪速炼铁技术有限公司 | Swirling flow flash smelting process |
| CN105861834B (en) * | 2016-04-28 | 2018-01-12 | 天津闪速炼铁技术有限公司 | A kind of eddy flow Flash Smelting technique |
| CN106521188A (en) * | 2016-11-02 | 2017-03-22 | 阳谷祥光铜业有限公司 | Rotational flow nickel smelting method and rotational flow nickel smelting device |
| CN108239708A (en) * | 2017-08-09 | 2018-07-03 | 徐州贝克福尔节能环保技术有限公司 | A kind of dry method, which suspends, is sintered Flash Smelting ferronickel Processes and apparatus |
| CN107312939A (en) * | 2017-08-30 | 2017-11-03 | 徐州贝克福尔节能环保技术有限公司 | A kind of lateritic nickel ore powder state smelting ferronickel equipment and technique |
| CN110527848A (en) * | 2019-09-30 | 2019-12-03 | 青岛中资中程集团股份有限公司 | A kind of method of lateritic nickel ore Flash Smelting Furnace reduction melting production ferronickel |
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