CN103695596A - Recycling method for producing silicomanganese alloy and medium and low carbon ferromanganese - Google Patents
Recycling method for producing silicomanganese alloy and medium and low carbon ferromanganese Download PDFInfo
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Abstract
The invention discloses a method for mutually recycling solid wastes produced by production of a silicomanganese alloy and medium and low carbon ferromanganese. The method comprises the following steps: sintering dust produced by production of silicomanganese of a submerged arc furnace, manganese powder ores, plant fibers and coke powder to blocks, and re-melting down to smelt; refining scrap iron and iron powder of the silicomanganese alloy and preparing manganese ore and lime; and placing in a finery to smelt the medium and low carbon ferromanganese. Carbon manganese residues produced in the smelting process can further replace dolomite and rich-manganous slags as the production raw material of the silicomanganese alloy, so that the recycling production process which consumes the wastes as the raw materials and brings out the best in each other is realized among steps of a workshop.
Description
Technical field
The present invention relates to the iron alloy technical field of one of a kind of smelting iron and steel raw material, particularly relate to the solid waste of generation in silicomanganese, medium-low carbon ferromanganese production and the mutual circulation of waste water and utilize method.
Background technology
Silicomanganese is by manganese, silicon, iron and a small amount of carbon and other elementary composition alloy, is the iron alloy that a kind of purposes is wide, output is larger.Manganese-silicon is the conventional composite deoxidant of steel-making, is again the reductive agent of producing medium-low carbon ferromanganese and electro-silicothermic process production manganese metal.Manganese and silicon are main alloy element used in carbon steel.Manganese is one of topmost reductor in steelmaking process, and nearly all steel grade all needs to carry out deoxidation with manganese.Because the oxygen product fusing point generating while carrying out deoxidation with manganese is lower, be easy to floating; Manganese can also increase the deoxidation effect of the strong reductor such as silicon and aluminium.All industrial steel capital need add a small amount of manganese as sweetening agent, make steel can carry out hot rolling, forging and other technique and unlikely fracture, most important alloying element in manganese or each steel grade also can add more than 15% manganese to increase the structural strength of steel in steel alloy.Silicon is the most important alloying element that is only second to manganese in the pig iron and carbon steel.In steel is produced, silicon is mainly used as the reductor of molten metal, or steel is gained in strength and improve its performance as alloy addition.Silicon or a kind of effective stone mill medium, it can make the carbon in cast iron become free stone mill carbon.Add the silicon in standard grey cast iron and spheroidal graphite cast iron can reach 4%.And a large amount of manganese and silicon are all to add in molten steel with the form of iron alloy: ferromanganese, silicomanganese and ferrosilicon.
The raw material of producing silicomanganese has manganese ore, rich manganese slag, silica, coke, rhombspar (or Wingdale), fluorite.Produce the mixing ore deposit that manganese-silicon can be used a kind of manganese ore or several manganese ore (comprising rich manganese slag).Because manganese-silicon requires iron, phosphorus content lower than high carbon ferromanganese, therefore require the manganese ore of smelting manganese silicon alloy to have higher Mn-Fe ratio and manganese phosphorus ratio.Manganese ore used is higher containing manganese, and indices is better.
Silicomanganese there are certain requirements the granularity of various raw materials in process of production, if the granularity of various raw materials is too little, can affects ventilation property, and then have influence on heat transfer process in smelting process, causes the chemical reaction of smelting process incomplete.The undersized of raw material, can cause a large amount of dust under the blast air in smelting furnace, not only can cause environmental pollution, also can lose starting material.In manganese and manganese alloy smelting process, can produce a large amount of flue gases, after bag-type dust, obtain the dust that a large amount of granularities are less than 1mm, dust contains manganese, if abandon these a large amount of dust, not only pollutes the environment, also can waste manganese resource in short supply, therefore must recycle them.The tiny manganese ore of granularity and dust are reclaimed, and the raw material of smelting as manganese and manganese alloy, not only can protection of the environment, can also develop to greatest extent limited manganese resource.Current most of manganese alloy enterprise reclaims the manganese ore of tiny granularity and the method for dust is with tackiness agent, breeze and dust to be made to a certain size globe, then sinter globe into, the tackiness agent using is wilkinite, lime etc., these tackiness agents are easily efflorescence in high temperature sintering, make globe intensity low, when globe enters easier efflorescence after high temperature sintering in mineral hot furnace, under blast air, produce more dust, affect metallurgical effect.
Medium-low carbon ferromanganese is one of main raw material of smelting stainless steel, high manganese high temperature steel, steel alloy, structure iron, tool steel, it can be used as the additive of alloying element, can be used as again deoxidization desulfuration agent, being widely used in low-carbon (LC) produces with steel containing special steel grade and the military project of manganese, silicomanganese and medium-low carbon ferromanganese combinations produce, the mutual circulation utilization that can effectively solve waste material.
The applicant Guangxi Min Cheng mining industry company limited applies for a kind of Chinese patent of silicomanganese dust sintering method for 2012, application number: CN201210502670.4, adopt coke powder and vegetable fibre by manganese ore powder and dust, utilize the sinter machine after improving, sintering under 1250 ℃ of left and right, obtain the high agglomerate of intensity of porous, become the very good material that silicomanganese is produced.It is a kind of method of processing dust and fine particle fine ore, and production cost is low, and Disposal quality is good.
But above-mentioned open source literature only proposes the sintering utilization of dust, the solid waste that other inter processes are produced is not discussed aspect comprehensive utilization.
Summary of the invention
The object of the invention is to provide the method that solid waste mutual circulation that silicomanganese, two kinds of products of medium-low carbon ferromanganese produced is aborning utilized, and is intended to reduce the consumption of resource and the energy, reduces three-waste pollution, strengthen environmental protection and increasing economic efficiency.
The present invention is achieved in that
The production of silicomanganese product is using manganese ore, rich manganese slag, silica, coke, rhombspar as basic raw material, first use mineral hot furnace roasting, obtain silicomanganese, the slag iron, the iron powder that after silicomanganese finishing, breaking, produce, mix higher-grade manganese ore, lime adds in refining furnace, make furnace charge fusing and silicomanganese is carried out to refining desiliconization, with the manganese oxide in Si reduction manganese ore, thereby obtaining medium-low carbon ferromanganese.It is characterized in that: the solid waste mutual circulation utilization that silicomanganese, two kinds of products of medium-low carbon ferromanganese are produced aborning, adopts following steps:
(1) the silicomanganese dust of mineral hot furnace dedusting being collected, adds manganese powder ore deposit, vegetable fibre and coke powder to be placed in sinter machine sintering, obtains porous, shaped agglomerate, then returns mine heat furnace smelting silicomanganese;
(2) mineral hot furnace is produced slag iron and the iron powder that silicomanganese produces, and allocates higher-grade manganese ore, lime into, and the qualified rear raw material of producing as medium-low carbon ferromanganese of ultimate analysis, send refining furnace to smelt;
(3) refining furnace is smelted the carbon manganese slag producing, Substitute For Partial rhombspar and Fu Meng slag, and the raw material of producing as silicomanganese is for mineral hot furnace;
(4) Water Quenching Slag that mineral hot furnace is discharged, the raw material of producing as high grade cement is used;
(5) after the low carbon ferromanganese fragmentation that refining furnace obtains, underproof particle and low Carbon Manganese iron powder return to the raw material that mineral hot furnace previous crops is (1) step;
(6) hot water out of m-benzoamino-semicarbazide furnace, mineral hot furnace is sent into cooling tower or is used with returning to refining furnace, mineral hot furnace after heat exchanger cooling, and heat exchanger, for exchange boiler water or tap water, reclaims the heat of m-benzoamino-semicarbazide furnace and mineral hot furnace; Or heat exchanger connects urban heating system;
The waste water of the Water Quenching Slag of m-benzoamino-semicarbazide furnace carbon manganese slag and cooling mineral hot furnace, Reusability after precipitation.
beneficial effect of the present invention
As seen from the above, production process of the present invention, except silicomanganese product export and mineral hot furnace Water Quenching Slag transport cement mill to, does not produce any waste water and dregs.
Silicomanganese of the present invention, medium-low carbon ferromanganese are produced the method for the solid waste mutual circulation utilization producing; slag iron, iron powder and the middle low Carbon Manganese that can make the screening of silicomanganese dust, silicomanganese finishing, breaking stay produced the carbon manganese slag that produces and by means of different such as sintering and raw material process configurations, made to form between each operation workshop upstream and downstream and consume altogether waste material, the benefit of resource each other; for economizing on resources and the energy; remove pollution, strengthen environmental protection, improve the aspects such as Business Economic Benefit all important role and realistic meaning.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the circulation utilization method of silicomanganese of the present invention, medium-low carbon ferromanganese production.
In figure, see, silicomanganese, medium-low carbon ferromanganese are produced the method for the solid waste mutual circulation utilization producing, it is the silicomanganese dust that mineral hot furnace dedusting is collected, add manganese powder ore deposit, vegetable fibre and coke powder to be placed in sinter machine sintering with the fine ore that can not smelt directly into stove, obtain porous, shaped agglomerate, then return mine heat furnace smelting silicomanganese; And slag iron and iron powder that silicomanganese produce to produce are allocated the raw material that higher-grade manganese ore, lime are produced as medium-low carbon ferromanganese into, send refining furnace, rely on power supply, make furnace charge fusing and silicomanganese is carried out to refining desiliconization, with the manganese oxide in Si reduction manganese ore, thereby obtaining medium-low carbon ferromanganese product; The carbon manganese slag that refining furnace smelt to produce, alternative rhombspar and Fu Meng slag again, the raw material of producing as silicomanganese is for mineral hot furnace; Mineral hot furnace, refining furnace are produced all component cooling waters, all through cooling tower, send circulating water pool back to, reuse.Thereby make all solids waste material producing between each operation of factory, the recycle that form raw material each other between operation upstream and downstream, consumes altogether waste material.
Embodiment
Embodiment 1
One of circulation utilization method that silicomanganese of the present invention, medium-low carbon ferromanganese are produced: silicomanganese dust sintering utilizes, and its batching is:
Silicomanganese dust 15%～20%;
Manganese powder ore deposit 40%;
Sintering returns to breeze 20%;
Coke powder 8～10%;
Vegetable fibre 10%;
Rhombspar surplus.
The raw materials for sintering mixing is above placed in to chamber type sintering machine and at 1250 ℃ of left and right sintering, after 45 minutes, is condensed into piece, after crushing and screening, as finished product raw material, again melt down smelting.
Two of circulation utilization method of the present invention: part slag iron and iron powder that silicomanganese product produces through finishing, breaking, use value is not high, as leaving unused of energy carrier, is a large amount of wastes of the energy.By analyzing each constituent content, reasonable process allotment, adds manganese ore, silicomanganese iron powder, slag iron and lime in refining furnace, the main electric heating that relies on makes furnace charge fusing, and silicomanganese is carried out to refining desiliconization, with the manganese oxide in Si reduction manganese ore, thereby obtain medium-low carbon ferromanganese.
Three of circulation utilization method of the present invention: refining furnace medium-low carbon ferromanganese is smelted and produced the carbon manganese slag producing, in slag, contain manganese 10～15%, basicity CaO+MngO/SiO2 is conventionally between 1.5～2.0%, therefore, in producing, can reduce silicomanganese the dosage of flux, and the manganese in recyclable carbon manganese slag again, realize waste residue utilization.
Four of circulation utilization method of the present invention: the hot water out of m-benzoamino-semicarbazide furnace, mineral hot furnace is sent into cooling tower or used with returning to refining furnace, mineral hot furnace after heat exchanger cooling, heat exchanger, for exchange boiler water or tap water, reclaims the heat of m-benzoamino-semicarbazide furnace and mineral hot furnace; Or heat exchanger connects urban heating system; The waste water of the Water Quenching Slag of m-benzoamino-semicarbazide furnace carbon manganese slag and cooling mineral hot furnace, Reusability after precipitation.
When the applicant does not adopt the circulation utilization method of silicomanganese, medium-low carbon ferromanganese production for 2011, pile up like a mountain in plant area for waste residue, waste water is discharged and has been polluted environment, bad impact has been caused in the cities and towns of factory's surrounding, the comprehensive regulation through 2012 and 2013, within 2013, do not have slag and effluent to discharge outside factory, saved large content of starting materials, economic benefit improves greatly, although silicomanganese production marketing prices 10%, but total accounting also gets a profit 15%, and particularly water consumption power consumption has declined 20%.
Claims (2)
1. the circulation utilization method that a silicomanganese, medium-low carbon ferromanganese are produced, it is characterized in that: be using manganese ore, rich manganese slag, silica, coke, rhombspar as basic raw material, first use mineral hot furnace roasting, obtain silicomanganese, the slag iron, the iron powder that after silicomanganese finishing, breaking, produce, mix higher-grade manganese ore, lime adds in refining furnace, make furnace charge fusing and silicomanganese is carried out to refining desiliconization, with the manganese oxide in Si reduction manganese ore, thereby obtain medium-low carbon ferromanganese, concrete recycle, adopts following steps:
(1) the silicomanganese dust of mineral hot furnace dedusting being collected, adds manganese powder ore deposit, vegetable fibre and coke powder to be placed in sinter machine sintering, obtains porous, shaped agglomerate, then returns mine heat furnace smelting silicomanganese;
(2) mineral hot furnace is produced slag iron and the iron powder that silicomanganese produces, and allocates higher-grade manganese ore, lime into, and the qualified rear raw material of producing as medium-low carbon ferromanganese of ultimate analysis, send refining furnace to smelt;
(3) refining furnace is smelted the carbon manganese slag producing, Substitute For Partial rhombspar and Fu Meng slag, and the raw material of producing as silicomanganese is for mineral hot furnace;
(4) Water Quenching Slag that mineral hot furnace is discharged, the raw material of producing as high grade cement is used;
(5) after the low carbon ferromanganese fragmentation that refining furnace obtains, underproof particle and low Carbon Manganese iron powder return to the raw material that mineral hot furnace previous crops is (1) step;
(6) hot water out of m-benzoamino-semicarbazide furnace, mineral hot furnace is sent into cooling tower or with returning to refining furnace, mineral hot furnace after heat exchanger cooling, is used the waste water of the Water Quenching Slag of m-benzoamino-semicarbazide furnace carbon manganese slag and cooling mineral hot furnace, Reusability after precipitation.
2. the circulation utilization method that silicomanganese according to claim 1, medium-low carbon ferromanganese are produced, is characterized in that: heat exchanger, for exchange boiler water or tap water, reclaims the heat of m-benzoamino-semicarbazide furnace and mineral hot furnace; Or heat exchanger connects urban heating system.
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Cited By (14)
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| CN104451300A (en) * | 2014-12-16 | 2015-03-25 | 中钢集团吉林铁合金股份有限公司 | High-silicon low-phosphorus micro-carbon manganese iron alloy and production method thereof |
| CN105567965A (en) * | 2015-12-30 | 2016-05-11 | 石嘴山市宝马兴庆特种合金有限公司 | Method for producing multi-element alloy by means of ring-pull cans |
| CN105671309A (en) * | 2016-04-05 | 2016-06-15 | 石嘴山市宝马兴庆特种合金有限公司 | Process research for producing multi-component composite material by virtue of silicon powder |
| CN105986121A (en) * | 2015-03-02 | 2016-10-05 | 石嘴山市宝马兴庆特种合金有限公司 | Method for producing multi-component alloy by using hill-skill soil and dust removing micro-powder |
| CN106702141A (en) * | 2016-12-30 | 2017-05-24 | 山东盛荣新材料有限公司 | Method for preparing hematite-manganese-aluminum composite through red mud |
| CN107190138A (en) * | 2017-06-08 | 2017-09-22 | 江苏省冶金设计院有限公司 | A kind of method and device that manganese-silicon is prepared using poor ferrous manganese ore |
| CN107385150A (en) * | 2017-07-18 | 2017-11-24 | 五矿（湖南）铁合金有限责任公司 | A kind of production method of middle silicon low-carbon low-phosphor manganese block ferroalloy |
| CN108118111A (en) * | 2017-12-21 | 2018-06-05 | 贵州大学 | The technique that a kind of silicomangan dedusting ash prepares composite slag agent |
| CN108149016A (en) * | 2017-12-22 | 2018-06-12 | 重庆大朗冶金新材料有限公司 | Manganese-silicon integrated smelting system |
| CN108359819A (en) * | 2018-03-07 | 2018-08-03 | 中冶东方工程技术有限公司 | Smelting Plant system and Smelting Plant technique |
| CN109518011A (en) * | 2019-01-16 | 2019-03-26 | 石嘴山市惠农区宏丰工贸有限公司 | Silicon manganese slag is melted down instead of dolomite Smelting Simn In A technique |
| CN112921177A (en) * | 2019-12-07 | 2021-06-08 | 平罗县东升冶金化工有限公司 | Efficient smelting method for silicon-manganese alloy |
| CN114606404A (en) * | 2022-03-09 | 2022-06-10 | 石横特钢集团有限公司 | Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite |
| CN117646128A (en) * | 2024-01-29 | 2024-03-05 | 辽宁中润信达冶金科技有限公司 | Smelting method for producing silicomanganese alloy by using manganese-rich slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104451300A (en) * | 2014-12-16 | 2015-03-25 | 中钢集团吉林铁合金股份有限公司 | High-silicon low-phosphorus micro-carbon manganese iron alloy and production method thereof |
| CN105986121A (en) * | 2015-03-02 | 2016-10-05 | 石嘴山市宝马兴庆特种合金有限公司 | Method for producing multi-component alloy by using hill-skill soil and dust removing micro-powder |
| CN105567965A (en) * | 2015-12-30 | 2016-05-11 | 石嘴山市宝马兴庆特种合金有限公司 | Method for producing multi-element alloy by means of ring-pull cans |
| CN105671309A (en) * | 2016-04-05 | 2016-06-15 | 石嘴山市宝马兴庆特种合金有限公司 | Process research for producing multi-component composite material by virtue of silicon powder |
| CN106702141A (en) * | 2016-12-30 | 2017-05-24 | 山东盛荣新材料有限公司 | Method for preparing hematite-manganese-aluminum composite through red mud |
| CN107190138A (en) * | 2017-06-08 | 2017-09-22 | 江苏省冶金设计院有限公司 | A kind of method and device that manganese-silicon is prepared using poor ferrous manganese ore |
| CN107385150A (en) * | 2017-07-18 | 2017-11-24 | 五矿（湖南）铁合金有限责任公司 | A kind of production method of middle silicon low-carbon low-phosphor manganese block ferroalloy |
| CN108118111A (en) * | 2017-12-21 | 2018-06-05 | 贵州大学 | The technique that a kind of silicomangan dedusting ash prepares composite slag agent |
| CN108149016A (en) * | 2017-12-22 | 2018-06-12 | 重庆大朗冶金新材料有限公司 | Manganese-silicon integrated smelting system |
| CN108359819A (en) * | 2018-03-07 | 2018-08-03 | 中冶东方工程技术有限公司 | Smelting Plant system and Smelting Plant technique |
| CN109518011A (en) * | 2019-01-16 | 2019-03-26 | 石嘴山市惠农区宏丰工贸有限公司 | Silicon manganese slag is melted down instead of dolomite Smelting Simn In A technique |
| CN112921177A (en) * | 2019-12-07 | 2021-06-08 | 平罗县东升冶金化工有限公司 | Efficient smelting method for silicon-manganese alloy |
| CN114606404A (en) * | 2022-03-09 | 2022-06-10 | 石横特钢集团有限公司 | Method for producing manganese-silicon alloy by using steel slag to replace light-burned dolomite |
| CN117646128A (en) * | 2024-01-29 | 2024-03-05 | 辽宁中润信达冶金科技有限公司 | Smelting method for producing silicomanganese alloy by using manganese-rich slag |
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