CN105483366A - Method for producing ferro-nickel through low-grade high-iron lateritic nickel ores - Google Patents
Method for producing ferro-nickel through low-grade high-iron lateritic nickel ores Download PDFInfo
- Publication number
- CN105483366A CN105483366A CN201610034855.5A CN201610034855A CN105483366A CN 105483366 A CN105483366 A CN 105483366A CN 201610034855 A CN201610034855 A CN 201610034855A CN 105483366 A CN105483366 A CN 105483366A
- Authority
- CN
- China
- Prior art keywords
- low
- grade high
- shaft kiln
- sinter
- kiln
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 46
- 229910000863 Ferronickel Inorganic materials 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052742 iron Inorganic materials 0.000 title abstract 3
- 239000002245 particle Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 9
- 239000004571 lime Substances 0.000 claims abstract description 9
- 239000000571 coke Substances 0.000 claims abstract description 7
- 239000011504 laterite Substances 0.000 claims description 30
- 229910001710 laterite Inorganic materials 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 16
- 239000002689 soil Substances 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 8
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 7
- 239000003830 anthracite Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000003034 coal gas Substances 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000292 calcium oxide Substances 0.000 abstract description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 230000036314 physical performance Effects 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- LVIYYTJTOKJJOC-UHFFFAOYSA-N nickel phthalocyanine Chemical compound [Ni+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 LVIYYTJTOKJJOC-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C22B1/16—Sintering; Agglomerating
- C22B1/22—Sintering; Agglomerating in other sintering apparatus
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A method for producing ferro-nickel through low-grade high-iron lateritic nickel ores includes the following steps that firstly, the low-grade high-iron lateritic nickel ores, lime and white pulverized coal are evenly mixed according to the mass ratio of 100:5 to 10:5 to 6, a sinter mixture is obtained, the sinter mixture is conveyed into a drum, and sinter particles with the particle size ranging from 10 mm to 50 mm and the alkalinity ranging from 0.8 to 0.9 are obtained and conveyed to a shaft kiln; the sinter particles with the particle size ranging from 30 mm to 40 mm are laid in the shaft kiln to serve as bed charge, then the sinter particles are placed on the bed charge to be ignited and sintered, the temperature is kept within the range from 950 DEG C to 1200 DEG C, the sinter particles fall into a box type material bin after being burned through, sinter and coke are evenly mixed according to the mass ratio of 1:5 to 6 and conveyed into a blast furnace in batches to be heated at the high temperature and reduced, and the ferro-nickel is obtained. According to the method, the lime and the white pulverized coal are added to the sinter, the content of calcium oxide is increased effectively, the requirement for the content of fixed carbon in fuel is met, the content of impurities is small, ingredients are stable, stable physical performance and a good chemical reaction are facilitated, the quality of the sinter is improved, and the yield of the sinter is increased.
Description
Technical field
The present invention relates to the production technique of ferronickel, particularly a kind of method of low-grade high ferro laterite nickel ore and producing ferronickel.
Background technology
Nickel occupies critical role in national economy, and at present, 70% of global explored nickel reserves are red soil nickel ores, and red soil nickel ore is developed limited because grade is low, it is difficult to reclaim.But along with increase and the minimizing of primary nickelous sulfide resource of nickel demand, how to effectively utilize red soil nickel ore and be day by day subject to people's attention.Then, no matter the technology being used for processing red soil nickel ore is at present pyrogenic process or wet method, and production cost is all very high, especially to low-grade laterite nickel ore wherein, can cause serious economy loss.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of reasonable in design, the method for the low-grade high ferro laterite nickel ore and producing ferronickel of energy-conserving and environment-protective.
Technical problem to be solved by this invention is realized by following technical scheme, and the present invention is a kind of method of low-grade high ferro laterite nickel ore and producing ferronickel, and be characterized in, its step is as follows,
(1) first by low-grade high ferro red soil nickel ore, lime, anthracite powder according to mass ratio 100:5-10:5-6 Homogeneous phase mixing, obtained sinter mixture;
(2) sinter mixture is delivered in drum, the rotating speed of drum is 6-10 rev/min, the agglomerate particle that obtained granularity is 10-50mm, basicity is 0.8-0.9, by agglomerate particle transport to shaft kiln, outwards expand and form arcuation kiln body in the middle part of shaft kiln, arcuation kiln body is provided with several side air admission mouths, and side air admission mouth is towards the downward-sloping setting in center of arcuation kiln body;
(3) first in shaft kiln, laying granularity is that the agglomerate particle of 30 ~ 40mm is as bed material, laying depth is 40 ~ 60mm, be placed on bed material by agglomerate particle again, in shaft kiln, the velocity of rotation of rotary drum is 3 ~ 8m/min, then sentences 150-210m from the side direction air intake vent of shaft kiln
3the air quantity blowing of/min, makes the blast in shaft kiln remain on 18-22Kpa, simultaneously, igniting sintering, makes the temperature in shaft kiln remain on 950-1200 DEG C, after ore deposit to be sintered particle is grilled thoroughly, from vertical kiln tower comb edge and center discharging simultaneously, fall in the box feed bin below shaft kiln, obtained agglomerate;
(4) be 1:1-3 mix after, from furnace roof in batches send into blast furnace in coke according to mass ratio by the agglomerate in box feed bin, in-furnace temperature is 1300-1600 DEG C, agglomerate after heat, reduction, obtained ferronickel.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the tail gas of described shaft kiln, after the dedusting of dedusting cylinder, is discharged by the chimney of a concentrated emission.
Technical problem to be solved by this invention can also be realized further by following technical scheme, the barrel of described chimney is provided with some inlet mouths, different inlet mouths is arranged on the different cross section of chimney, inlet mouth is along the circumferential spaced set of chimney, inlet mouth place is provided with the inlet pipe tangent with chimney barrel, and described inlet mouth is along the barrel helically formula arrangement of chimney.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the vertical spaced set of described inlet mouth, the caliber of described inlet pipe is identical.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the coal gas in described blast furnace is discharged from furnace roof, after the dedusting of dedusting cylinder, delivers to the interior use of kiln in sodium silicate solid workshop.
Technical problem to be solved by this invention can also be realized further by following technical scheme, the top of described dedusting cylinder is provided with inlet pipe, the bottom of dedusting cylinder is provided with cinder-discharging port, the side of dedusting cylinder is provided with air outlet, and the lower port of inlet pipe to extend in dedusting cylinder and is arranged on the below of air outlet.
Technical problem to be solved by this invention can also be realized further by following technical scheme, close the two-bolt lock wind mechanism of feed-pipe when closing discharge nozzle, discharging when described box feed bin is provided with charging, described two-bolt lock wind mechanism comprises the discharge lock air lock system be located on feed-pipe and the charging be located on discharge nozzle lock air lock system.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the useful volume of described blast furnace is 70-90m
3.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the height that in described shaft kiln, tower is combed is 1000-1400mm.
Compared with prior art, the present invention adds lime in agglomerate, and effectively improve the content of calcium oxide, impurity is few, stable components, improves the quality of agglomerate; Add anthracite powder, meet the requirement to fixed carbon content in fuel, ash content is low, and volatile matter is low, and sulfur-bearing is low, stable components, is more conducive to the stable physical property in sintering process and good chemical reaction, saves production cost; By agglomerate granulation, obtain the sinter mixture that size composition is good, be not only conducive to transhipment, can also improve the ventilation property of sinter bed, to ensure the quality of agglomerate and to improve output, it is reasonable in design, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the shaft kiln of the box feed bin of band and dedusting cylinder;
Fig. 2 is the structural representation of chimney;
Fig. 3 is the side-view of Fig. 2.
Embodiment
Referring to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
Embodiment 1, with reference to Fig. 1-3, a kind of method of low-grade high ferro laterite nickel ore and producing ferronickel, its step is as follows,
(1) first by low-grade high ferro red soil nickel ore, lime, anthracite powder according to mass ratio 100:5:5 Homogeneous phase mixing, obtained sinter mixture;
(2) sinter mixture is delivered in drum, the rotating speed of drum is 6 revs/min, the agglomerate particle that obtained granularity is 10-50mm, basicity is 0.8, by agglomerate particle transport to shaft kiln, outwards expand and form arcuation kiln body 1 in the middle part of shaft kiln, arcuation kiln body 1 is provided with several side air admission mouths 2, and side air admission mouth 2 is towards the downward-sloping setting in center of arcuation kiln body 1;
(3) first lay in shaft kiln granularity be the agglomerate particle of 30 ~ 40mm as bed material, laying depth is 40mm, then is placed on bed material by agglomerate particle, and in shaft kiln, the velocity of rotation of rotary drum is 3m/min, then sentences 150m from the side direction air intake vent of shaft kiln
3the air quantity blowing of/min, makes the blast in shaft kiln remain on 18Kpa, simultaneously, igniting sintering, makes the temperature in shaft kiln remain on 950 DEG C, after ore deposit to be sintered particle is grilled thoroughly, the discharging while that combing 8 edge and center from vertical kiln tower, falls in the box feed bin below shaft kiln, obtained agglomerate;
(4) be 1:1 mix after, from furnace roof in batches send into blast furnace in coke according to mass ratio by the agglomerate in box feed bin 7, in-furnace temperature is 1300 DEG C, agglomerate after heat, reduction, obtained ferronickel.
Embodiment 2, a kind of method of low-grade high ferro laterite nickel ore and producing ferronickel, its step is as follows,
(1) first by low-grade high ferro red soil nickel ore, lime, anthracite powder according to mass ratio 100:10:6 Homogeneous phase mixing, obtained sinter mixture;
(2) sinter mixture is delivered in drum, the rotating speed of drum is 10 revs/min, the agglomerate particle that obtained granularity is 10-50mm, basicity is 0.9, by agglomerate particle transport to shaft kiln, outwards expand and form arcuation kiln body 1 in the middle part of shaft kiln, arcuation kiln body 12 is provided with several side air admission mouths 2, and side air admission mouth 2 is towards the downward-sloping setting in center of arcuation kiln body 1;
(3) first lay in shaft kiln granularity be the agglomerate particle of 30 ~ 40mm as bed material, laying depth is 60mm, then is placed on bed material by agglomerate particle, and in shaft kiln, the velocity of rotation of rotary drum is 8m/min, then sentences 210m from the side direction air intake vent of shaft kiln
3the air quantity blowing of/min, makes the blast in shaft kiln remain on 22Kpa, simultaneously, igniting sintering, makes the temperature in shaft kiln remain on 1200 DEG C, after ore deposit to be sintered particle is grilled thoroughly, the discharging while that combing 8 edge and center from vertical kiln tower, falls in the box feed bin below shaft kiln, obtained agglomerate;
(4) be 1:2 mix after, from furnace roof in batches send into blast furnace in coke according to mass ratio by the agglomerate in box feed bin 7, in-furnace temperature is 1600 DEG C, agglomerate after heat, reduction, obtained ferronickel.
Embodiment 3, a kind of method of low-grade high ferro laterite nickel ore and producing ferronickel, its step is as follows,
(1) first by low-grade high ferro red soil nickel ore, lime, anthracite powder according to mass ratio 100:6:5.5 Homogeneous phase mixing, obtained sinter mixture;
(2) sinter mixture is delivered in drum, the rotating speed of drum is 8 revs/min, the agglomerate particle that obtained granularity is 10-50mm, basicity is 0.85, by agglomerate particle transport to shaft kiln, outwards expand and form arcuation kiln body 1 in the middle part of shaft kiln, arcuation kiln body 1 is provided with several side air admission mouths 2, and side air admission mouth 2 is towards the downward-sloping setting in center of arcuation kiln body 1;
(3) first lay in shaft kiln granularity be the agglomerate particle of 30 ~ 40mm as bed material, laying depth is 50mm, then is placed on bed material by agglomerate particle, and in shaft kiln, the velocity of rotation of rotary drum is 5m/min, then sentences 200m from the side direction air intake vent of shaft kiln
3the air quantity blowing of/min, makes the blast in shaft kiln remain on 20Kpa, simultaneously, igniting sintering, makes the temperature in shaft kiln remain on 1100 DEG C, after ore deposit to be sintered particle is grilled thoroughly, the discharging while that combing 8 edge and center from vertical kiln tower, falls in the box feed bin 7 below shaft kiln, obtained agglomerate;
(4) be 1:3 mix after, from furnace roof in batches send into blast furnace in coke according to mass ratio by the agglomerate in box feed bin 7, in-furnace temperature is 1450 DEG C, agglomerate after heat, reduction, obtained ferronickel.
Embodiment 4, a kind of method of low-grade high ferro laterite nickel ore and producing ferronickel, its step is as follows,
(1) first by low-grade high ferro red soil nickel ore, lime, anthracite powder according to mass ratio 100:8:5.2 Homogeneous phase mixing, obtained sinter mixture;
(2) sinter mixture is delivered in drum, the rotating speed of drum is 8 revs/min, the agglomerate particle that obtained granularity is 10-50mm, basicity is 0.86, by agglomerate particle transport to shaft kiln, outwards expand and form arcuation kiln body 1 in the middle part of shaft kiln, arcuation kiln body 1 is provided with several side air admission mouths 2, and side air admission mouth 2 is towards the downward-sloping setting in center of arcuation kiln body 1;
(3) first lay in shaft kiln granularity be the agglomerate particle of 30 ~ 40mm as bed material, laying depth is 45mm, then is placed on bed material by agglomerate particle, and in shaft kiln, the velocity of rotation of rotary drum is 3 ~ 8m/min, then sentences 205m from the side direction air intake vent of shaft kiln
3the air quantity blowing of/min, makes the blast in shaft kiln remain on 19.6Kpa, simultaneously, igniting sintering, makes the temperature in shaft kiln remain on 1050 DEG C, after ore deposit to be sintered particle is grilled thoroughly, the discharging while that combing 8 edge and center from vertical kiln tower, falls in the box feed bin 7 below shaft kiln, obtained agglomerate;
(4) be 1:2.5 mix after, from furnace roof in batches send into blast furnace in coke according to mass ratio by the agglomerate in box feed bin 7, in-furnace temperature is 1200 DEG C, agglomerate after heat, reduction, obtained ferronickel.
Embodiment 5, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the tail gas of described shaft kiln, after the dedusting of dedusting cylinder, is discharged by the chimney of a concentrated emission.
Embodiment 6, the method of the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the barrel of described chimney 10 is provided with some inlet mouths 11, different inlet mouths 11 is arranged on the different cross section of chimney 10, inlet mouth 11 is along the circumferential spaced set of chimney 10, inlet mouth 11 place is provided with the inlet pipe 9 tangent with chimney barrel, and described inlet mouth 11 is along the barrel helically formula arrangement of chimney 10.
Embodiment 7, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the vertical spaced set of described inlet mouth 11, the caliber of described inlet pipe 9 is identical.
Embodiment 8, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the coal gas in described blast furnace is discharged from furnace roof, after the dedusting of dedusting cylinder, delivers to the interior use of kiln in sodium silicate solid workshop.
Embodiment 9, the method of the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the top of described dedusting cylinder 12 is provided with inlet pipe 13, the bottom of dedusting cylinder 12 is provided with cinder-discharging port 14, the side of dedusting cylinder 13 is provided with air outlet, and the lower port of inlet pipe 13 to extend in dedusting cylinder 12 and is arranged on the below of air outlet.
Embodiment 10, the method of the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, close the two-bolt lock wind mechanism of feed-pipe 3 when closing discharge nozzle 5, discharging when described box feed bin 7 is provided with charging, described two-bolt lock wind mechanism comprises the discharge lock air lock system 4 be located on feed-pipe 3 and the charging lock air lock system 6 be located on discharge nozzle 5.
Embodiment 11, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the useful volume of described blast furnace is 70m
3.
Embodiment 12, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the useful volume of described blast furnace is 90m
3.
Embodiment 13, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, the useful volume of described blast furnace is 80m
3.
Embodiment 14, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, in described shaft kiln, the height of tower comb 8 is 1000mm, and diameter is 3m.
Embodiment 15, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, in described shaft kiln, the height of tower comb 8 is 1400mm, and diameter is 4m.
Embodiment 16, the method for the low-grade high ferro laterite nickel ore and producing ferronickel described in embodiment 1, in described shaft kiln, the height of tower comb 8 is 1200mm, and diameter is 3.5m.
Shaft kiln changes over arcuation by directly barrel-shaped, i.e. large-scale parabolic type, when making limit wind move to arc inner wall in stove, restrain to the stove heart, increase the height that central tower is combed, change ventilation effect in stove, effectively wind is delivered to central tower and comb and stove combustion band center, make kiln inner edge wind center poise, not inclined wind, easy to operate, thus ensure that in kiln, horizontal section temperature is basically identical, in stove, material is steadily descending in order, for good thermal regulation created by the grog firing high-yield high-quality amount fast; Reasonable adjustment rotating speed, thoroughly solves that center discharging is fast, edge discharging slow and the problem of " loosing core ", make the ventilation resistance of zone of combustion balanced, reach reinforced, calcining, discharging three balance, add output, improve the quality of grog; The large components such as shaft kiln central tower is combed, annular double-edged fine-toothed comb and master wheel, be all designed to multilayer, multistage, split type, reduce the weight of single parts, making and installation is very convenient, because discharging area is large, rotating speed is low, thus the consumable accessory replacement cycle greatly extend; A large amount of high-temperature flue gas can be produced when sintering, can heat power being formed when these high-temperature flue gas are arranged by aiutage outward, making full use of these heat powers, chimney adopts natural ventilation dedusting method, eliminate traditional induced draft fan, water curtain dedusting, not only can save energy and reduce the cost, and can decreasing pollution; Set out material airlock, prevent from leaking out, improve drafting efficiency, if integrated air exhaust dedusting, reach energy-saving and environmental protection double effects; The present invention establishes box feed bin 7, and naturally cooling agglomerate eliminates the devices such as half-finished refrigerating unit, belt conveyor, reduces cost, more economical.
Claims (9)
1. a method for low-grade high ferro laterite nickel ore and producing ferronickel, is characterized in that: its step is as follows,
(1) first by low-grade high ferro red soil nickel ore, lime, anthracite powder according to mass ratio 100:5-10:5-6 Homogeneous phase mixing, obtained sinter mixture;
(2) sinter mixture is delivered in drum, the rotating speed of drum is 6-10 rev/min, the agglomerate particle that obtained granularity is 10-50mm, basicity is 0.8-0.9, by agglomerate particle transport to shaft kiln, outwards expand and form arcuation kiln body in the middle part of shaft kiln, arcuation kiln body is provided with several side air admission mouths, and side air admission mouth is towards the downward-sloping setting in center of arcuation kiln body;
(3) first in shaft kiln, laying granularity is that the agglomerate particle of 30 ~ 40mm is as bed material, laying depth is 40 ~ 60mm, be placed on bed material by agglomerate particle again, in shaft kiln, the velocity of rotation of rotary drum is 3 ~ 8m/min, then sentences 150-210m from the side direction air intake vent of shaft kiln
3the air quantity blowing of/min, makes the blast in shaft kiln remain on 18-22Kpa, simultaneously, igniting sintering, makes the temperature in shaft kiln remain on 950-1200 DEG C, after ore deposit to be sintered particle is grilled thoroughly, from vertical kiln tower comb edge and center discharging simultaneously, fall in the box feed bin below shaft kiln, obtained agglomerate;
(4) be 1:1-3 mix after, from furnace roof in batches send into blast furnace in coke according to mass ratio by the agglomerate in box feed bin, in-furnace temperature is 1300-1600 DEG C, agglomerate after heat, reduction, obtained ferronickel.
2. the method for low-grade high ferro laterite nickel ore and producing ferronickel according to claim 1, is characterized in that: the tail gas of described shaft kiln, after the dedusting of dedusting cylinder, is discharged by the chimney of a concentrated emission.
3. the method for low-grade high ferro laterite nickel ore and producing ferronickel according to claim 2, it is characterized in that: on the barrel of described chimney, be provided with some inlet mouths, different inlet mouths is arranged on the different cross section of chimney, inlet mouth is along the circumferential spaced set of chimney, inlet mouth place is provided with the inlet pipe tangent with chimney barrel, and described inlet mouth is along the barrel helically formula arrangement of chimney.
4. the method for low-grade high ferro laterite nickel ore and producing ferronickel according to claim 3, is characterized in that: the vertical spaced set of described inlet mouth, the caliber of described inlet pipe is identical.
5. the method for low-grade high ferro laterite nickel ore and producing ferronickel according to claim 1, is characterized in that: the coal gas in described blast furnace is discharged from furnace roof, after the dedusting of dedusting cylinder, delivers to the interior use of kiln in sodium silicate solid workshop.
6. the method for the low-grade high ferro laterite nickel ore and producing ferronickel according to claim 2 or 5, it is characterized in that: the top of described dedusting cylinder is provided with inlet pipe, the bottom of dedusting cylinder is provided with cinder-discharging port, the side of dedusting cylinder is provided with air outlet, and the lower port of inlet pipe to extend in dedusting cylinder and is arranged on the below of air outlet.
7. the method for low-grade high ferro laterite nickel ore and producing ferronickel according to claim 1, it is characterized in that: the two-bolt lock wind mechanism of closing feed-pipe when closing discharge nozzle, discharging when described box feed bin is provided with charging, described two-bolt lock wind mechanism comprises the discharge lock air lock system be located on feed-pipe and the charging be located on discharge nozzle lock air lock system.
8. the method for low-grade high ferro laterite nickel ore and producing ferronickel according to claim 1, is characterized in that: the useful volume of described blast furnace is 70-90m
3.
9. the method for low-grade high ferro laterite nickel ore and producing ferronickel according to claim 1, is characterized in that: the height that in described shaft kiln, tower is combed is 1000-1400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610034855.5A CN105483366B (en) | 2016-01-20 | 2016-01-20 | A kind of method of low-grade high ferro laterite nickel ore and producing ferronickel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610034855.5A CN105483366B (en) | 2016-01-20 | 2016-01-20 | A kind of method of low-grade high ferro laterite nickel ore and producing ferronickel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105483366A true CN105483366A (en) | 2016-04-13 |
| CN105483366B CN105483366B (en) | 2017-11-24 |
Family
ID=55670637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610034855.5A Active CN105483366B (en) | 2016-01-20 | 2016-01-20 | A kind of method of low-grade high ferro laterite nickel ore and producing ferronickel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105483366B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088694A (en) * | 2016-06-08 | 2016-11-09 | 中冶南方工程技术有限公司 | Lateritic nickel ore raw material storage and lateritic nickel ore stock preparation system |
| CN111219752A (en) * | 2020-02-27 | 2020-06-02 | 济南环球采暖设备制造有限公司 | Waste heat utilization device of fuel gas stove |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082067A (en) * | 2007-07-05 | 2007-12-05 | 中南大学 | Comprehensive utilization technique for low-grade laterite nickel ore |
| CN101418359A (en) * | 2008-10-17 | 2009-04-29 | 中南大学 | Method for extracting iron and high grade ferro-nickel alloy from laterite nickle mine |
| CN101603141A (en) * | 2009-06-27 | 2009-12-16 | 方喜 | Utilize the method for low magnesium osculant laterite nickel ore and producing ferronickel |
| CN104818382A (en) * | 2015-06-01 | 2015-08-05 | 连云港宝翔铸造有限公司 | Nickel ore sintering machine |
-
2016
- 2016-01-20 CN CN201610034855.5A patent/CN105483366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082067A (en) * | 2007-07-05 | 2007-12-05 | 中南大学 | Comprehensive utilization technique for low-grade laterite nickel ore |
| CN101418359A (en) * | 2008-10-17 | 2009-04-29 | 中南大学 | Method for extracting iron and high grade ferro-nickel alloy from laterite nickle mine |
| CN101603141A (en) * | 2009-06-27 | 2009-12-16 | 方喜 | Utilize the method for low magnesium osculant laterite nickel ore and producing ferronickel |
| CN104818382A (en) * | 2015-06-01 | 2015-08-05 | 连云港宝翔铸造有限公司 | Nickel ore sintering machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088694A (en) * | 2016-06-08 | 2016-11-09 | 中冶南方工程技术有限公司 | Lateritic nickel ore raw material storage and lateritic nickel ore stock preparation system |
| CN106088694B (en) * | 2016-06-08 | 2018-05-08 | 中冶南方工程技术有限公司 | Lateritic nickel ore raw material storage and lateritic nickel ore stock preparation system |
| CN111219752A (en) * | 2020-02-27 | 2020-06-02 | 济南环球采暖设备制造有限公司 | Waste heat utilization device of fuel gas stove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105483366B (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11905181B2 (en) | Method for preparing calcium oxide using a multistage suspension preheater kiln | |
| CN113548814B (en) | Environment-friendly baking process, environment-friendly baking kiln tube and environment-friendly baking shaft kiln | |
| CN110127648B (en) | Process for calcining needle coke by closed-circuit regulation rotary kiln and flue gas treatment system | |
| CN109776002A (en) | A kind of the suspension calcining activation system and method for Suitable clays mine tailing | |
| CN111777343B (en) | A highly efficient and environmentally friendly tower type mixed-fired light-burning magnesium vertical kiln and its production process | |
| CN101265041A (en) | Technique for using dry discharging carbide slag to completely substitute natural calcareous raw material for producing cement chamotte | |
| CN107201420A (en) | The energy comprehensive utilization system and its production technology of a kind of smelting in rotary kiln sponge iron | |
| CN106282467A (en) | A kind of iron mine fine coal base produces direct-reduction facilities and method | |
| CN203284438U (en) | Magnetizing roasting reducing atmosphere preparation device and iron mine flash magnetizing roasting system | |
| CN105276573B (en) | Wind coal charge is classified low nitrogen burning equipment and technology and cement clinker burning system | |
| CN105483366A (en) | Method for producing ferro-nickel through low-grade high-iron lateritic nickel ores | |
| CN101172652A (en) | Alum mine calcium method marching type roasting method and roasting furnace | |
| CN207998558U (en) | A kind of extra light calcined magnesia suspended state calcination system | |
| CN109868360A (en) | A kind of energy saving technique of sinter production | |
| CN110220386A (en) | A kind of kaolin powder pre-heating system and kaolin powder calcination system and method for calcinating comprising it | |
| CN214792497U (en) | Spodumene calcining and converting device | |
| CN110776011B (en) | Method for preparing sodium chromate by low-nitrogen roasting and clinker continuous leaching of chromite | |
| CN104818382A (en) | Nickel ore sintering machine | |
| CN105546975A (en) | Two-section rotating pyrolysis reactor | |
| CN105347702A (en) | Cement production rotary kiln device | |
| CN204779731U (en) | Nickel ore sintering machine | |
| CN214747299U (en) | Device for producing mineral admixture by using coal gangue | |
| CN104496207A (en) | Heat accumulating type lime rotary kiln | |
| CN101492256A (en) | Method for directly burning calcium carbide furnace gas to manufacture lime by using rotary kiln | |
| CN217131780U (en) | Cement decomposing furnace system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180315 Address after: Baihe Town, Qingpu District, Shanghai City, 201700 waiqingsong Highway No. 3560 No. 4 floor 2 East Building A room 2145 Patentee after: Shanghai Han column Environmental Protection Engineering Co., Ltd. Address before: 222300 Donghai County City, Jiangsu Province, rural industrial park Patentee before: Lianyun Harbour precious Xiang casting company limited |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180605 Address after: 222000 Jiangsu province Lianyungang city Donghai County hump village former rose Village Industrial Park Patentee after: Lianyungang Bai Shun glaze Co., Ltd. Address before: 201700 room 2145, A District, 2 floor, 4 building, 4 building, No. 3560, Baihe Town, Qingpu District, Shanghai. Patentee before: Shanghai Han column Environmental Protection Engineering Co., Ltd. |