CN103305690A - Pre-pressing forming and intensified sintering method of fine iron ore concentrate - Google Patents
Pre-pressing forming and intensified sintering method of fine iron ore concentrate Download PDFInfo
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Abstract
The invention relates to a pre-pressing forming and intensified sintering method of fine iron ore concentrate. The pre-pressing forming and intensified sintering method comprises the following steps of: firstly, mixing fine iron ore concentrate with calcined lime uniformly, and forming into cylindrical material particles through pre-pressing by a high pressure roller forming machine; then, mixing the cylindrical material particles with other sintering raw materials to form a mixture, and arranging, igniting and sintering sintering material particles after the sintering material particles are prepared inside a cylindrical nodulizer so as to obtain agglomerate. The key of the method is as follows: the iron ore concentrate is processed through pre-pressing forming, material difficult to pelletize is forced to be formed through strong external force effect, the size composition of the mixture is improved, and the mixture is palletized together with other mixtures so as to improve the air permeability of sintering material layer; the sintering performance and metallurgical performance of the fine iron ore concentrate are improved so as to intensify the sintering; and under the condition of keeping the quality of sintering ore, the sintering ore yield and iron grade are improved, the energy consumption is reduced, and charging material with good quality is provided for intensifying blast furnace process.
Description
Technical field
The invention discloses the intensified-sintered method of a kind of granule iron concentrate pre-molding; Granulate by granule iron concentrate powder pre-molding is strengthened, effectively improve compound size composition and ventilation property, thus intensified-sintered.Belong to technical field of ferrous metallurgy.
Background technology
Iron ore sintering mine is the main furnace charge of China's blast furnace ironmaking, accounts for the 70%-80% into the stove iron charge.Whole nation agglomerate annual production is hundred million tons of 5-6.Strengthen agglomeration for iron mine, fuel saving, reduce production costs significant.
How to improve agglomerate iron grade, guarantee agglomerate output and quality, reduction agglomerate energy consumption is the problem that numerous manufacturers face jointly.Adding a small amount of particulate magnetite concentrate (ratio that accounts for total iron material usually is 10-20%) in sinter mixture is one of effective measure that improve agglomerate iron grade, but the further rising of particulate magnetite concentrate add-on, will influence granulating efficiency and the permeability of sintering material bed of sinter mixture, thereby the indexs such as intensity, output and energy consumption of agglomerate are had a negative impact.Main employing drum mixer mixes and granulates both at home and abroad at present, in order to strengthen granulation, to improve granulating efficiency, mostly manufacturer adopts and lengthens drum mixer, increases mixing machine hop count (increasing to three sections mixing machines by two sections mixing machines) or improve in the mixing machine structure, technology such as the coke powder branch adds, the unslaked lime branch adds, high pressure roller mill or the pre-treatment of profit mill improve surface active process and adopt balling disc to strengthen technology such as granulation, obtained certain effect, but need Production Flow Chart is transformed, investment is big, the production cost height.
Invent new method, improve the granulating efficiency of high mixture ratio particulate magnetite concentrate sinter mixture, significant.
Summary of the invention
The objective of the invention is to the high mixture ratio particulate magnet fine mineral powder at the difficulty granulation, provide a kind of granule iron concentrate pre-molding intensified-sintered method, by to granule iron concentrate powder pre-molding, granulation, effectively improve compound size composition and ventilation property, thus intensified-sintered; Under the prerequisite that keeps sinter quality, improve agglomerate output and iron grade, cut down the consumption of energy, smelting for reinforcing blast furnace provides the high-quality furnace charge.
The intensified-sintered method of a kind of granule iron concentrate pre-molding of the present invention comprises the steps:
The first step, the granule iron concentrate pre-molding
Granule iron concentrate and unslaked lime are mixed, form the granule iron concentrate compound, the quality percentage composition of water is 8～10% in the control granule iron concentrate compound; With granule iron concentrate compound pre-molding, the material grain of pre-molding is the right cylinder of diameter 3～12mm; Pre-molding material grain fragments into the right cylinder of the different lengths of fixed diameter automatically in dropping process;
In second step, granulate
With the pre-molding material grain of the first step preparation and other raw materials for sintering (powdered iron ore, unslaked lime, Wingdale, rhombspar, return mine, coke powder) composition granulation compound, the quality percentage composition of water is 7～9% in the control granulation compound, places drum pelletizer to make the sintered material grain that granularity is 3～12mm the granulation compound; Powdered iron ore in pre-molding material grain and other raw materials for sintering constitutes the total iron material in the granulation compound; Unslaked lime in other raw materials for sintering, Wingdale, rhombspar, return mine, coke powder is the starting material that existing SINTERING PRODUCTION is used;
The 3rd step, sintering
The sintered material grain is carried out cloth, igniting, sintering at sinter machine, obtain agglomerate.
The intensified-sintered method of a kind of granule iron concentrate pre-molding of the present invention, when described granule iron concentrate mixed with unslaked lime, the unslaked lime addition accounted for the 3%-10% of particulate magnetite concentrate quality, and unslaked lime improves the precompressed balling ratio as binding agent; The granularity of granule iron concentrate is smaller or equal to 1mm; The granularity of unslaked lime is smaller or equal to 3mm; Described granule iron concentrate is selected from particulate magnetite concentrate or v-ti magnetite concentrate.
The intensified-sintered method of a kind of particulate magnetite concentrate of the present invention pre-molding is (8～10) * 10 with the pressure of granule iron concentrate compound pre-molding
4N.
The intensified-sintered method of a kind of particulate magnetite concentrate of the present invention pre-molding, the mass percent that granule iron concentrate pre-molding material grain accounts for total iron material is 30-50%.
The intensified-sintered method of a kind of granule iron concentrate pre-molding of the present invention, pre-molding material grain mixes in drum pelletizer, granulates with other raw materials for sintering.
The intensified-sintered method of a kind of granule iron concentrate pre-molding of the present invention, described pre-molding adopts the high pressure roller molding machine, described high pressure roller molding machine comprises frame, level pressure roller, dynamic pressure roller, pressure roller drive-motor, fluid pressure drive device, hopper, described level pressure roller, dynamic pressure roller are installed in parallel on the frame by bearing support, be provided with described hopper above described level pressure roller, dynamic pressure roller, the discharge port of hopper is between the axis of described level pressure roller, dynamic pressure roller; Described fluid pressure drive device drives described dynamic pressure roller along continuous straight runs and moves, to regulate the pressure that two roller spaces and pressure roller put on material; Described pressure roller drive-motor drives described level pressure roller respectively, dynamic pressure roller relatively rotates.
The intensified-sintered method of a kind of granule iron concentrate pre-molding of the present invention, in the described high pressure roller molding machine, described level pressure roller, dynamic pressure roller are right cylinder, cylindrical outside surface along described level pressure roller and dynamic pressure roller is evenly distributed in the ring groove pattern, the cross section of described groove is semicircle, the semi-circular recesses on described level pressure roller and dynamic pressure roller surface mates mutually, forms a plurality of uniform circular patterns at level pressure roller and the tangent position of dynamic pressure roller; The diameter of described circular pattern is 3-12mm.
The intensified-sintered method of a kind of granule iron concentrate pre-molding of the present invention, in the described high pressure roller molding machine, fluid pressure drive device is applied to the pressure (0.2-10) * 10 on the dynamic pressure roller
4N.
The present invention is owing to adopt the pre-molding intensified sintering, improved pellet performance and the sintering character of the smart powder of difficult iron, the proportioning that can make the smart powder of iron account for total iron material is brought up to 30-50%, can keep agglomerate output constant substantially, improve sinter strength and iron grade, reduce sintering energy consumption.
Key problem in technology of the present invention is that iron ore concentrate is carried out pre-molding to be handled, by powerful external force effect, make difficult granulation material force moulding, improve compound size composition, together granulate by drum pelletizer and other compound again, improve permeability of sintering material bed; Bond because material produces the static pressure pulverizing in the high-pressure molding process, can increase the particle surface lattice imperfection, the increase of particle surface energy can strengthen the pyroreaction activity, thereby improves its sintering character and metallurgical performance.In addition, in granule iron concentrate, mix the good precompressed unslaked lime of surface hydrophilicity, under the effect of high pressure roller molding machine, precompressed unslaked lime adheres to the iron ores particle surface, improve its surface hydrophilicity, even if the bulk cargo in high-pressure molding also can participate in granulating in drum mixer, thereby make bed permeability obtain obvious improvement.Simultaneously, because the feeding pressure direction is consistent with the discharge direction, it is easy to make the high pressure roller molding machine have a demoulding, agglomerate diameter and agglomerate output advantages of higher close with the pelletizing diameter.
Among the present invention, the principle of work of high pressure roller molding machine is sketched in following: drive-motor drives two pressure rollers and relatively rotates, material flows out from the outlet of hopper, under the downward gravity promotion of material self and the effect of pressure roller biting force, fine is squeezed between two pressure rollers, two tangent positions of pressure roller, to be extruded moulding be cylindric to fine in two relative semi-circular recesses spaces.Leave tangent position along with two pressure rollers continue to relatively rotate, columned die mould material is extruded pressing mold automatically.On the whole circumference direction, because each pressure roller is continuous semi-cylindrical form, the material of extruding is continuous cylindric, will fragment into the right cylinder of the different lengths of fixed diameter automatically in dropping process, and cylinder diameter depends on the diameter mould of the circular pattern that roller surface arranges.Pressure roller rotating speed and pressure roller size determine material handling capacity, the i.e. throughput of equipment.By regulating pressure roller rotating speed and pressure roller size, the throughput of controllable device.
Advantage and the positively effect of invention
Key of the present invention is the compound of particulate magnet fine mineral powder and unslaked lime is carried out the pre-molding processing, can improve sinter mixture pellet performance and sintering character.After the smart powder of magnet or the smart powder of v-ti magnetite were handled through pre-molding, the compound median size increased, and the 3-12mm grade increases 10-20%, and ventilation property improves 10-15%, solid burnup decline 3-5kg/t.When sinter strength was close substantially, agglomerate output improved 5%-10%.The advantage of high pressure roller molding machine provided by the invention is integrated pair roller balling press and high-pressure roller mill, output is big, ratio of briquetting is high and the easy demoulding.
In addition, the smart powder of magnet or the smart powder of v-ti magnetite are handled through pre-molding, can reduce by a cylindrical section nodulizer, and floor space reduces, production efficiency increases, and flow process is simplified greatly.Wide promotional value and application prospect are arranged in iron industry, can widen the iron-smelting raw material source, use a large amount of magnetite concentrates, v-ti magnetite concentrate, improve agglomerate iron grade, improve agglomerate output, save sintering energy consumption.Thereby reduction ironmaking cost.
Description of drawings
Accompanying drawing 1 is process flow sheet of the present invention.
Accompanying drawing 2 is mesohigh roller molding machine structural representation of the present invention.
Accompanying drawing 3 is level pressure roller, the dynamic pressure roller mounting structure synoptic diagram in the accompanying drawing 2.
Among the figure: 1-frame, 2-level pressure roller, 3-dynamic pressure roller, 4-pressure roller drive-motor, 5-fluid pressure drive device, 6-hopper, 7-groove pattern, the circular pattern of 8-.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail.
Referring to accompanying drawing 2,3, mesohigh roller molding machine of the present invention comprises frame 1, level pressure roller 2, dynamic pressure roller 3, pressure roller drive-motor 4, fluid pressure drive device 5, hopper 6, described level pressure roller 2, dynamic pressure roller 3 are installed in parallel on the frame 1 by bearing support, be provided with described hopper 6 above described level pressure roller 2, dynamic pressure roller 3, the discharge port of hopper 6 is between the axis of described level pressure roller 2, dynamic pressure roller 3; Described fluid pressure drive device 5 drives described dynamic pressure roller 3 along continuous straight runs and moves, to regulate the pressure that two roller spaces and pressure roller put on material; Described pressure roller drive-motor 4 drives described level pressure roller 2 respectively, dynamic pressure roller 3 relatively rotates; Described level pressure roller 2, dynamic pressure roller 3 are right cylinder, cylindrical outside surface along described level pressure roller 2 and dynamic pressure roller 3 is evenly distributed in ring groove pattern 7, the cross section of described groove is semicircle, the semi-circular recesses on described level pressure roller 2 and dynamic pressure roller 3 surfaces mates mutually, forms a plurality of uniform circular patterns 8 at level pressure roller 2 and dynamic pressure roller 3 tangent positions; The diameter of described circular pattern 8 is 3-12mm; Described fluid pressure drive device 5 is applied to the pressure (0.2-10) * 10 on the dynamic pressure roller 3
4N.
Embodiment 1:
Fine powder of magnetite is 30% in the proportioning of total iron material, mixing behind the unslaked lime of interpolation 3% in the smart powder of magnet, and mixture moisture 8.4% is at roll-in pressure 8 * 10
4Be pressed into the agglomerate of 3-12mm under the N/mm through the high pressure roller molding machine, mix with other raw materials for sintering again.Proportion of raw materials is pressed agglomerate Chemical Composition control target (iron grade 57-58%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.Compound is behind secondary cylinder mixing granulation, and mixing pellet moisture is 8.3%, carries out sintering.The 3-12mm grain size content is 89.3% in the granulation compound, and the bed permeability resistance drops to 70mmH
2O, the agglomerate yield rate is 70.14%, utilization coefficient 1.42t/m
2H, barrate strength 62.45%, sintering solid burnup 64.6kg/t.
Comparative Examples 1
The proportioning of fine powder of magnetite in total iron material is 30% o'clock, sintering process routinely, and compound mixes pellet moisture 8.7% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 57-58%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.The 3-12mm grain size content is 70.5% in the granulation compound, and the bed permeability resistance is 96mmH
2O, the agglomerate yield rate is 65.44%, utilization coefficient 1.29t/m
2H, barrate strength 61.87%, sintering solid burnup 68.9kg/t.
Embodiment 2:
The proportioning of fine powder of magnetite in total iron material is 40%, adds 5% unslaked lime in the smart powder of magnet again and mixes, and mixture moisture 8.7% is at roll-in pressure 9 * 10
4Under the N/mm, be pressed into the 3-12mm agglomerate through the high pressure roller molding machine, mix with other raw materials for sintering again.The proportioning of other raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 57-58%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.Compound mixes pellet moisture 8.4% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The 3-12mm grain size content is 77.2% in the granulation compound, and the bed permeability resistance drops to 100mmH
2O, the agglomerate yield rate is 70.74%, utilization coefficient 1.30t/m
2H, barrate strength 62.78%, sintering solid burnup 70.54kg/t.
Comparative Examples 2
The proportioning of fine powder of magnetite in total iron material is 40% o'clock, sintering process routinely, and compound mixes pellet moisture 8.6% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 57-58%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.The 3-12mm grain size content is 68.3% in the granulation compound, and the bed permeability resistance is 120mmH
2O, the agglomerate yield rate is 64.46%, utilization coefficient 1.29t/m
2H, barrate strength 55.87%, sintering solid burnup 75.6kg/t.
Embodiment 3:
The proportioning of fine powder of magnetite in total iron material is 50%, mixes behind interpolation 10% unslaked lime in the smart powder of magnet, and mixture moisture 9.2% is at roll-in pressure 8 * 10
4Under the N/mm, be pressed into the 3-12mm agglomerate through the high pressure roller molding machine, mix with other raw materials for sintering again.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 57-58%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.Compound mixes pellet moisture 8.7% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The 3-12mm grain size content is 65.3% in the granulation compound, and the bed permeability resistance drops to 110mmH
2O, the agglomerate yield rate is 65.21%, utilization coefficient 1.33t/m
2H, barrate strength 61.09%, sintering solid burnup 65.62kg/t.
Comparative Examples 3
The proportioning of fine powder of magnetite in total iron material is 50% o'clock, sintering process routinely, and compound is sintering behind secondary cylinder mixing granulation.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 57-58%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.The 3-12mm grain size content is 65.3% in the granulation compound, and the bed permeability resistance is 135mmH
2O, the agglomerate yield rate is 63.35%, utilization coefficient 1.21t/m
2H, barrate strength 60.12%, sintering solid burnup 69.50kg/t.
Embodiment 4:
The v-ti magnetite tantalite power is 40% in the proportioning of total iron material, mixing behind the unslaked lime of interpolation 5% in the smart powder of v-ti magnetite, and mixture moisture 8.9% is at roll-in pressure 8 * 10
4Be pressed into the agglomerate of 3-12mm under the N/mm through the high pressure roller molding machine, mix with other raw materials for sintering again.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 55-56%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.Compound is behind secondary cylinder mixing granulation, and mixing pellet moisture is 8.4%, carries out sintering.The 3-12mm grain size content is 87.0% in the granulation compound, and the bed permeability resistance drops to 100mmH
2O, the agglomerate yield rate is 70.20%, utilization coefficient 1.31t/m
2H, barrate strength 60.39%, sintering solid burnup 70.2kg/t.
Comparative Examples 4
The proportioning of v-ti magnetite tantalite power in total iron material is 40% o'clock, sintering process routinely, and compound mixes pellet moisture 8.8% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 57-58%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.The 3-12mm grain size content is 66.0% in the granulation compound, and the bed permeability resistance is 130mmH
2O, the agglomerate yield rate is 68.69%, utilization coefficient 1.19t/m
2H, barrate strength 60.12%, sintering solid burnup 75.3kg/t.
Embodiment 5:
The proportioning of v-ti magnetite tantalite power in total iron material is 40%, adds 7% unslaked lime in the smart powder of magnet again and mixes, and mixture moisture 9.3% is at roll-in pressure 9 * 10
4Under the N/mm, be pressed into the 3-12mm agglomerate through the high pressure roller molding machine, mix with other raw materials for sintering again.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 55-56%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.Compound mixes pellet moisture 8.7% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The 3-12mm grain size content is 75.3% in the granulation compound, and the bed permeability resistance drops to 110mmH
2O, the agglomerate yield rate is 69.74%, utilization coefficient 1.30t/m
2H, barrate strength 61.57%, sintering solid burnup 69.32kg/t.
Comparative Examples 5
The proportioning of v-ti magnetite tantalite power in total iron material is 40% o'clock, sintering process routinely, and compound mixes pellet moisture 8.9% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 55-56%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.The 3-12mm grain size content is 65.3% in the granulation compound, and the bed permeability resistance is 135mmH
2O, the agglomerate yield rate is 63.33%, utilization coefficient 1.15t/m
2H, barrate strength 58.87%, sintering solid burnup 77.9kg/t.
Embodiment 6:
The proportioning of v-ti magnetite tantalite power in total iron material is 60%, mixes behind interpolation 10% unslaked lime in the smart powder of magnet, and mixture moisture 9.3% is at roll-in pressure 10 * 10
4Under the N/mm, be pressed into the 3-12mm agglomerate through the high pressure roller molding machine, mix with other raw materials for sintering again.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 55-56%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.Compound mixes pellet moisture 8.9% through secondary cylinder mixing granulation, carries out sintering to mixing pellet then.The 3-12mm grain size content is 72.3% in the granulation compound, and the bed permeability resistance drops to 135mmH
2O, the agglomerate yield rate is 68.21%, utilization coefficient 1.22t/m
2H, barrate strength 60.43%, sintering solid burnup 75.7kg/t.
Comparative Examples 6
The proportioning of v-ti magnetite tantalite power in total iron material is 60% o'clock, sintering process (the high pressure roller molding machine is not installed in the schema 1) routinely, and compound is sintering behind secondary cylinder mixing granulation.The proportioning of raw materials for sintering is pressed agglomerate Chemical Composition control target (iron grade 55-56%, basicity CaO/SiO2=2.0, MgO1.5%, SiO
25.8%) calculating the back adds.The 3-12mm grain size content is 64.2% in the granulation compound, and the bed permeability resistance is 150mmH
2O, the agglomerate yield rate is 64.56%, utilization coefficient 1.03t/m
2H, barrate strength 59.12%, sintering solid burnup 78.7kg/t.
The parameter that obtains from above embodiment and Comparative Examples is as can be known: after the smart powder of magnet or the smart powder of v-ti magnetite were handled through pre-molding, the compound median size increased, and the 3-12mm grade increases 10-20%, and ventilation property improves 10-15%, solid burnup decline 3-5kg/t.When sinter strength was close substantially, agglomerate output improved 5%-10%.
Claims (8)
1. the method that the granule iron concentrate pre-molding is intensified-sintered comprises the steps:
The first step, the granule iron concentrate pre-molding
Granule iron concentrate and unslaked lime are mixed, form the granule iron concentrate compound, the quality percentage composition of water is 8～10% in the control granule iron concentrate compound; With granule iron concentrate compound pre-molding, the material grain of pre-molding is the right cylinder of diameter 3～12mm;
In second step, granulate
Pre-molding material grain and other raw materials for sintering of the first step preparation are formed the granulation compound, and the quality percentage composition of water is 7～9% in the control granulation compound, and the granulation compound is made the sintered material grain that granularity is 3～12mm;
The 3rd step, sintering
The sintered material grain is carried out cloth, igniting, sintering at sinter machine, obtain agglomerate.
2. the intensified-sintered method of a kind of particulate magnetite concentrate pre-molding according to claim 1, it is characterized in that: when described granule iron concentrate mixed with unslaked lime, the unslaked lime addition accounted for the 3%-10% of granule iron concentrate quality; The granularity of granule iron concentrate is smaller or equal to 1mm; The granularity of unslaked lime is smaller or equal to 3mm; Described granule iron concentrate is selected from particulate magnetite concentrate or v-ti magnetite concentrate.
3. the intensified-sintered method of a kind of particulate magnetite concentrate pre-molding according to claim 1 is characterized in that: the pressure of particulate magnet ore concentrate mix pre-molding is (8～10) * 10
4N.
4. the intensified-sintered method of a kind of particulate magnetite concentrate pre-molding according to claim 1, it is characterized in that: the mass percent that pre-molding material grain accounts for total iron material is 30-50%.
5. the intensified-sintered method of a kind of granule iron concentrate pre-molding according to claim 1, it is characterized in that: pre-molding material grain mixes in drum pelletizer, granulates with other raw materials for sintering.
6. according to any intensified-sintered method of described a kind of granule iron concentrate pre-molding of claim 1-5, it is characterized in that: described pre-molding adopts the high pressure roller molding machine, described high pressure roller molding machine comprises frame, level pressure roller, dynamic pressure roller, pressure roller drive-motor, fluid pressure drive device, hopper, described level pressure roller, dynamic pressure roller are installed in parallel on the frame by bearing support, be provided with described hopper above described level pressure roller, dynamic pressure roller, the discharge port of hopper is between the axis of described level pressure roller, dynamic pressure roller; Described fluid pressure drive device drives described dynamic pressure roller along continuous straight runs and moves, to regulate the pressure that two roller spaces and pressure roller put on material; Described pressure roller drive-motor drives described level pressure roller respectively, dynamic pressure roller relatively rotates.
7. the intensified-sintered method of a kind of granule iron concentrate pre-molding according to claim 6, it is characterized in that: in the described high pressure roller molding machine, described level pressure roller, dynamic pressure roller are right cylinder, cylindrical outside surface along described level pressure roller and dynamic pressure roller is evenly distributed in the ring groove pattern, the cross section of described groove is semicircle, the semi-circular recesses on described level pressure roller and dynamic pressure roller surface mates mutually, forms a plurality of uniform circular patterns at level pressure roller and the tangent position of dynamic pressure roller; The diameter of described circular pattern is 3～12mm.
8. the intensified-sintered method of a kind of granule iron concentrate pre-molding according to claim 6, it is characterized in that: in the described high pressure roller molding machine, fluid pressure drive device is applied to the pressure (0.2-10) * 10 on the dynamic pressure roller
4N.
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| CN104975172A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Preparation method of pellet performance detection sample |
| CN106544500A (en) * | 2015-09-17 | 2017-03-29 | 攀钢冶金材料有限责任公司 | A kind of composite assistant and its preparation method and application |
| CN107164631A (en) * | 2017-06-30 | 2017-09-15 | 中冶京诚工程技术有限公司 | A kind of method and system for improving iron ore sintering mixture ventilation |
| CN107267750A (en) * | 2017-07-04 | 2017-10-20 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of granulating of high-chromic vanadium-titanium ferroferrite sinter mixture |
| CN111910073A (en) * | 2020-08-21 | 2020-11-10 | 中南大学 | Method for producing low-dust particle emission granules based on high-proportion micro-fine particle materials |
| RU2806142C1 (en) * | 2023-04-24 | 2023-10-26 | Николай Владимирович Колесников | Method for producing granular iron concentrate |
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| CN104975172A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Preparation method of pellet performance detection sample |
| CN104673997A (en) * | 2015-01-22 | 2015-06-03 | 河北钢铁股份有限公司邯郸分公司 | Optimization method of sintering proportioning structure |
| CN106544500A (en) * | 2015-09-17 | 2017-03-29 | 攀钢冶金材料有限责任公司 | A kind of composite assistant and its preparation method and application |
| CN106544500B (en) * | 2015-09-17 | 2018-07-24 | 攀钢冶金材料有限责任公司 | A kind of composite assistant and its preparation method and application |
| CN107164631A (en) * | 2017-06-30 | 2017-09-15 | 中冶京诚工程技术有限公司 | A kind of method and system for improving iron ore sintering mixture ventilation |
| CN107164631B (en) * | 2017-06-30 | 2019-11-12 | 中冶京诚工程技术有限公司 | A kind of method and system improving iron ore sintering mixture ventilation |
| CN107267750A (en) * | 2017-07-04 | 2017-10-20 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of granulating of high-chromic vanadium-titanium ferroferrite sinter mixture |
| CN107267750B (en) * | 2017-07-04 | 2019-05-28 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of granulating of high-chromic vanadium-titanium ferroferrite sinter mixture |
| CN111910073A (en) * | 2020-08-21 | 2020-11-10 | 中南大学 | Method for producing low-dust particle emission granules based on high-proportion micro-fine particle materials |
| RU2806142C1 (en) * | 2023-04-24 | 2023-10-26 | Николай Владимирович Колесников | Method for producing granular iron concentrate |
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