CN103435258A - Hot-feeding production process of granular cotton from manganese alloy liquid-state waste - Google Patents
Hot-feeding production process of granular cotton from manganese alloy liquid-state waste Download PDFInfo
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- CN103435258A CN103435258A CN2013103625541A CN201310362554A CN103435258A CN 103435258 A CN103435258 A CN 103435258A CN 2013103625541 A CN2013103625541 A CN 2013103625541A CN 201310362554 A CN201310362554 A CN 201310362554A CN 103435258 A CN103435258 A CN 103435258A
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Abstract
The invention discloses a hot-feeding production process of granular cotton from manganese alloy liquid-state waste, and belongs to the technical field of manganese alloy waste reutilization. A hot-feeding production process of granular cotton from manganese alloy liquid-state waste is provided so as to achieve the comprehensive utilization of manganese alloy waste, reduce the environmental pollution, save the floor area and improve the problem in the prior art that the energy consumption is large, the waste gas discharge causes secondary pollution to the environment and the product quality is instable in the production of granular cotton from iron and steel waste. The technical scheme adopted for solving the technical problem is as follows: transporting liquid-state waste resulting from the extraction of manganese alloy into a mineral wool production shop, directly loading into a tempering furnace, adding tempering materials according to the product requirements, melting and tempering, loading into a heat-insulating furnace for heat insulation, loading into a four-roll centrifugal Machine to make inorganic fibers, adding dust-proof oil and making an incombustible fiber granular product, loading into a cotton-collecting machine using a high-pressure blower fan for subsequent procedures, and performing slag globule separation, granulation and packing and storing in warehouse in sequence. The invention can be widely applied in the field of manganese alloy smelting.
Description
Technical field
Manganese alloy liquid state waste slag of the present invention is produced granulated wool technique, belongs to manganese alloy waste residue reutilization technology field.
Background technology
Iron And Steel Industry is the important foundation industry of national economy, along with scientific and technical progress, whole world iron and steel enterprise all adjusts the product mix in quickening, gradually reduce and superseded ordinary steel and elementary steel production, increase considerably the proportion of production of high-quality steel and special steel, and manganese is additive and the reductor of product as high-quality steel and special steel, demand is also increasing day by day, and producing the waste residue produced in the process of manganese alloy also increases on year-on-year basis.The treatment process of manganese alloy waste residue is at present:
1, the low feed proportioning for the production of cement of part manganese content.But, along with the high speed development of China's Iron And Steel Industry, the shortage of water resources becomes the factor of another restriction China development of iron & steel industry except the iron ore deposit shortage.Simultaneously, the liquid state waste slag liquid temperature is about more than 1350 ℃, and Water Quenching Slag produces a large amount of Low Temperature Steams, and except minority iron and steel enterprise is used for warming, all the other all waste at present.
2, the waste residue backfill that manganese content is higher is stacked, and the manganese slag is discarded in vain, also wants land occupation, to environment.
Carry out the research of manganese resource high-efficiency optimisation technique, manganese resource Green Manufacturing Technology, manganese resource energy-saving and emission-reduction new technology, for solving the utilization of China's low-grade manganese high-efficiency cleaning, a manganese smelting environmental pollution difficult problem, make China become manganese utilization of resources technology power worthy of the name, meaning is very important.Therefore, manganese slag recycling becomes the key of manganese industry Sustainable development.
Waste steel slag is in the past produced granulated wool technique, at first by slag (blast furnace or open hearth slag etc.) or rock (basalt, diabase etc.) and some basic materials (rhombspar, Wingdale etc.) of containing the oxide compounds such as silicon, aluminium, magnesium, add coke to make fuel, send into according to a certain ratio the interior high-temp combustion of smelting furnace (cupola furnace, tank furnace, electric melting furnace etc.), through the melt of high temperature melt, from the cupola furnace outlet, flow out fibroblast, collection cotton, the separation of slag ball, granulation, packaging and warehousing.Its explanation can be shown in Fig. 1 with reference to the old technological process of production.The subject matter existed is:
1, adopt cold slag to enter stove, need add coke to improve temperature in stove as fuel and make cold dregs mixing material heat up, melt.Yield poorly, consume the energy, production cost is high.According to statistics, produce the coke that mineral wool per ton need consume 300 kilograms of left and right, by the C that contains 80% in coke, will produce the approximately CO of 880 kilograms after burning
2, also contain a certain amount of S in flue gas, after discharge to environment.
2, in stove, intensification need to be blown into air by blower fan, and air enters in stove and can absorb heat, and causes fuel consumption to increase, and power consumption is high, unstable product quality.
The liquid hot charging granulated wool of manganese alloy waste residue production line purpose is to explore manganese slag recycling, solves the problems such as its contaminate environment, reaches the purpose of preserving the ecological environment simultaneously, creates higher economic benefit purpose.
Summary of the invention
The present invention is in order to solve the comprehensive utilization of manganese alloy waste residue, environmental contamination reduction, save floor occupying area, in improvement waste steel slag production granulated wool technology in the past, energy consumption is large, because combustion gas causes secondary pollution to environment, the problem of unstable product quality, provide a kind of manganese alloy liquid state waste slag hot charging to produce granulated wool technique.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: manganese alloy liquid state waste slag hot charging is produced granulated wool technique, carries out according to the following steps:
The first step: the liquid state waste slag that will extract manganese alloy is transported to the mineral wool production plant, directly join in hardening and tempering furnace, simultaneously according to product requirement, allocate the modified material that weight part is 1%～20% into, through fusing, after modified, form liquid compound, and send in holding furnace and be incubated;
Second step: the liquid compound in holding furnace in the described the first step is sent into to high speed centrifugation equipment by chute and make inorganic fibre, and then add that dust laying oil makes the nonflame fibre particle product;
The 3rd step: the nonflame fibre particle product in described second step is sent in cotton collecting machine and carried out subsequent handling with high pressure positive blower, successively the separation of slag ball, granulation, packaging and warehousing.
Described hardening and tempering furnace and holding furnace all adopt heated by electrodes.
Described chute comprises a subordinated chute and late stream, by described chute, liquid compound is sent into to high speed centrifugation equipment, rises and controls flow and insulation effect.
The temperature of described holding furnace is 1350 ℃.
Described modified material is bauxitic clay.
Described liquid compound pH value after modified is 1.2～1.4.
Described holding furnace relies on water cooling system to carry out cooling adjusting.
The utility appliance of described four roller whizzers has sizing material system and aidr bells blast system.
Described high speed centrifugation equipment is four roller whizzers.
The present invention compared with prior art has following beneficial effect.
1, the present invention takes full advantage of the waste residue waste heat, the liquid slag of having extracted manganese alloy is transported to the mineral wool production plant, directly join hardening and tempering furnace and electric furnace, carry out modified and insulation, saved the solid slag melting process, the raw material heat-insulation system is with electrode insulation and fusing simultaneously, changed traditional coke that adds and produced heat in raw material, so reduced in a large number to produce and dropped into and disposal of pollutants, realized innoxious, resource utilization granulated wool production and the manufacture of type material and the further lifting of quality.
2, the present invention utilizes the electrode insulation electric furnace raw material is heated and be incubated, and relatively traditional coke that adds in raw material produces heat, has saved a large amount of energy, and the present invention and common process energy consumption are relatively as table 1
Table 1 electric mantle heater and cupola furnace energy consumption are relatively
| The type of furnace | Variety of energy sources | Unit | Consumption | The conversion system | Be converted to standard coal (t) |
| Electric mantle heater | Electricity | Ten thousand kwh/a | 972 | 1.229 | 1195 |
| Cupola furnace | Coke | Ten thousand t/a | 6000 | 1 | 6000 |
| Difference | ? | ? | ? | ? | 4805 |
By above-mentioned comparison, adopt the present invention to produce 20000 tons of mineral wools per year and can save 4805 tons, mark coal.
3, common process be by solid-state waste residue allocate a certain amount of auxiliary material into, coke adds in stove, needs through heating up, the fusion stage, when solid-state waste residue adds in stove, can produce stove and becomes, and affect production stability; The present invention directly adds in hardening and tempering furnace by liquid slag, allocate the modified material of weight part 1%～20% into simultaneously, only have modified material require intensification, fusion stage, but its amount of allocating into is few, required absorption heat is also few, and liquid slag only need be incubated and gets final product, and to furnace charge, can not cause that stove becomes, production stability is good, the good physical performance of the product of producing.
4, the hardening and tempering furnace in the present invention and holding furnace have all changed the form of tradition with the coke heating, but adopted the type of heating of mineral hot furnace, insulation and the melting of with electrode, conducting heat and realizing raw material, this mode had both been saved the energy and had been produced and drop into, the melt time is short, output is high, and power consumption is low, and has reduced pollution.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further.
Fig. 1 produces the granulated wool process flow sheet for existing solid-state waste residue.
Fig. 2 is process flow sheet of the present invention.
Embodiment
By reference to the accompanying drawings the specific embodiment of the present invention is described further.
As shown in Figure 2, manganese alloy liquid state waste slag hot charging of the present invention is produced granulated wool technique, carries out according to the following steps:
The first step: the liquid state waste slag that will extract manganese alloy is transported to the mineral wool production plant, directly join in hardening and tempering furnace, simultaneously according to product requirement, allocate the modified material that weight part is 1%～20% into, through fusing, after modified, form liquid compound, and send in holding furnace and be incubated;
Second step: the liquid compound in holding furnace in the described the first step is sent into to high speed centrifugation equipment by chute and make inorganic fibre, and then add that dust laying oil makes the nonflame fibre particle product;
The 3rd step: the nonflame fibre particle product in described second step is sent in cotton collecting machine and carried out subsequent handling with high pressure positive blower, successively the separation of slag ball, granulation, packaging and warehousing.
Described hardening and tempering furnace and holding furnace all adopt heated by electrodes.
Described chute comprises a subordinated chute and late stream, by described chute, liquid compound is sent into to high speed centrifugation equipment, rises and controls flow and insulation effect.
The temperature of described holding furnace is 1350 ℃.
Described modified material is bauxitic clay.
Described liquid compound pH value after modified is 1.2～1.4.
Described holding furnace relies on water cooling system to carry out cooling adjusting.
The utility appliance of described four roller whizzers has sizing material system and aidr bells blast system.
Described high speed centrifugation equipment is four roller whizzers.
Production line of the present invention:
(1) utilize the manganese alloy liquid state waste slag directly to add in stove, temperature, more than 1350 ℃, takes full advantage of waste heat.
(2) effect of hardening and tempering furnace is melted the modified material of allocating into, utilizes modified material liquid towards slag to carry out modified, and its acidity quotient is reached between 1.2～1.4, to meet the cotton requirement of production granulation, and through modified constant product quality.
(3) holding furnace is to be incubated at 1350 ℃ by the modified good mineral wool slag of hardening and tempering furnace.Be provided with first and second chute, by chute, liquid slag sent into to high speed centrifugation equipment, play a transition role.
The present invention utilizes manganese alloy liquid state waste slag hot charging to produce the production line of granulated wool, take full advantage of the waste residue waste heat, the liquid slag of having extracted manganese alloy is transported to the mineral wool production plant, directly join in hardening and tempering furnace, while is joined 1%～20% modified material by weight according to product requirement, through fusing, after modified, send in holding furnace, the interior raw material of stove is stablized and be controlled at 1350 ℃, by one, after late stream is delivered to high speed centrifugation equipment and is made inorganic fibre, add the nonflame fibre particle product that special dust laying oil is made, adopt high-pressure blast that fiber is sent into to cotton collecting machine, carry out subsequent handling: the slag ball separates, granulation, packaging and warehousing.
Liquid towards waste residue chemical constitution of the present invention requires: the liquid towards waste residue carries out feedstock analysis, the manganese dreg chemistry forms as table 2, allocate the bauxitic clay of weight part 5% into according to its chemical composition, the bauxitic clay chemistry forms as table 3, after modified, the chemical constitution of liquid compound is as table 4, its acidity quotient is advisable between 1.2～1.4, and its composition need meet granulated wool production.The main chemical constitution of typical case's granulated wool is as table 5.
Table 2 manganese dreg chemistry forms
| Chemical composition | SiO 2 | Al 2O 3 | CaO | MgO | Fe 2O 3 | MnO |
| Content/% | 47.17 | 2.66 | 35.89 | 4.71 | 0.21 | 4.73 |
Table 3 bauxitic clay chemistry forms
| Chemical composition | SiO 2 | Al 2O 3 | CaO | MgO | Fe 2O 3 |
| Content/% | 41.2 | 43.28 | 9.45 | 0.82 | 2.24 |
The main chemical constitution of table 4 mineral wool slag
| Chemical composition | SiO 2 | Al 2O 3 | CaO | MgO | Fe 2O 3 | MnO |
| Content/% | 43.32 | 7.69 | 37.64 | 3.63 | 0.46 | 3.67 |
The main chemical constitution of the typical granulated wool of table 5
| Chemical composition | SiO 2 | Al 2O 3 | CaO | MgO |
| Content/% | 33～42 | 8～13 | 32～43 | 4～7 |
The production line that the present invention utilizes manganese alloy liquid state waste slag hot charging to produce granulated wool takes full advantage of the waste residue waste heat, the liquid slag of having extracted manganese alloy is transported to the mineral wool production plant, the liquid towards slag carries out feedstock analysis, by batching, make its composition meet granulated wool production, the acidity quotient of raw material is advisable between 1.2～1.4.By qualified liquid slag, directly join in hardening and tempering furnace, allocate a certain proportion of modified material into according to product requirement simultaneously, through fusing, after modified, send in holding furnace, the interior raw material of stove is stablized and be controlled at 1350 ℃, by one, after late stream is delivered to high speed centrifugation equipment and is made inorganic fibre, add the nonflame fibre particle product that special dust laying oil is made, adopt high-pressure blast that fiber is sent into to cotton collecting machine, mineral wool is fully mixed with dust laying oil, and the waste residue ball is gone out by band slag roll row, negative pressure guipure through cotton collecting machine transits to solution cotton machine through the middle roller transfer roller by thin cotton felt by uniform thin cotton felt.
Separating cotton machine slightly tears thin cotton felt through the high speed rotating plumage, form larger cotton-wool, fall on the loose wool transfer roller and be transported to the cotton sucking tube ingress, by negative-pressure air fan, loose wool being picked up, middle through the slag bulb spacer, loose wool is clashed in separator, some larger slag balls drop and are excluded away, and lighter loose wool enters in cyclone, is subject to the effect of whirlwind in cyclone, loose wool falls in central position, and some floating trickle cottons enter in dust-removing box with airduct.After loose wool falls in cyclone, the tablets press of sending into that loose wool is quantitative by turning valve.
In tablets press, alternate staggered cutting knife is installed, when turning valve is sent into cotton tablets press and further torn loose wool; be blown into malleation wind by high pressure positive blower again; loose wool is blown in round roller screen, and through the effect of sieve rotation, the spherical material group that forms the 2cm left and right is granulated wool.Through rotary conveyor, be transported to the packing machine place.According to customer requirement, packing moulding warehouse-in.
The present invention comprises around the subsystem of above-mentioned process matching: water cooling system, spray dust laying oil system, pneupress system, electrical control system and dedusting environment friendly system.
Claims (9)
1. manganese alloy liquid state waste slag hot charging is produced granulated wool technique, it is characterized in that, carries out according to the following steps:
The first step: the liquid state waste slag that will extract manganese alloy is transported to the mineral wool production plant, directly join in hardening and tempering furnace, simultaneously according to product requirement, allocate the modified material that weight part is 1%～20% into, through fusing, after modified, form liquid compound, and send in holding furnace and be incubated;
Second step: the liquid compound in holding furnace in the described the first step is sent into to high speed centrifugation equipment by chute and make inorganic fibre, and then add that dust laying oil makes the nonflame fibre particle product;
The 3rd step: the nonflame fibre particle product in described second step is sent in cotton collecting machine and carried out subsequent handling with high pressure positive blower, successively the separation of slag ball, granulation, packaging and warehousing.
2. manganese alloy liquid state waste slag hot charging according to claim 1 is produced granulated wool technique, it is characterized in that, described hardening and tempering furnace and holding furnace all adopt heated by electrodes.
3. manganese alloy liquid state waste slag hot charging according to claim 1 is produced granulated wool technique, it is characterized in that, described chute comprises a subordinated chute and late stream, by described chute, liquid compound is sent into to high speed centrifugation equipment, rises and controls flow and insulation effect.
4. manganese alloy liquid state waste slag hot charging according to claim 1 and 2 is produced granulated wool technique, it is characterized in that, the temperature of described holding furnace is 1350 ℃.
5. manganese alloy liquid state waste slag hot charging according to claim 1 and 2 is produced granulated wool technique, it is characterized in that, described modified material is bauxitic clay.
6. manganese alloy liquid state waste slag hot charging according to claim 1 and 2 is produced granulated wool technique, it is characterized in that, described liquid compound pH value after modified is 1.2～1.4.
7. manganese alloy liquid state waste slag hot charging according to claim 1 and 2 is produced granulated wool technique, it is characterized in that, described holding furnace relies on water cooling system to carry out cooling adjusting.
8. manganese alloy liquid state waste slag hot charging according to claim 1 and 2 is produced granulated wool technique, it is characterized in that, the utility appliance of described four roller whizzers has sizing material system and aidr bells blast system.
9. manganese alloy liquid state waste slag hot charging according to claim 1 and 2 is produced granulated wool technique, it is characterized in that, described high speed centrifugation equipment is four roller whizzers.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326658A (en) * | 2014-08-14 | 2015-02-04 | 宝钢矿棉科技（宁波）有限公司 | Granular wool production line |
| CN104496167A (en) * | 2014-09-03 | 2015-04-08 | 宝钢矿棉科技（宁波）有限公司 | Conditioning material for granulated wool and preparation method thereof |
| CN105923987A (en) * | 2016-04-29 | 2016-09-07 | 杨凤义 | High-efficiency energy-saving environment-friendly melting furnace unit for production of basalt rock wool |
| CN106365431A (en) * | 2016-08-25 | 2017-02-01 | 山西太钢不锈钢股份有限公司 | Method of producing mineral wool from hot melt slag through electric furnaces |
| CN109320062A (en) * | 2018-10-09 | 2019-02-12 | 交城义望铁合金有限责任公司 | A kind of method of manganese alloy liquid state waste slag hot charging production granulated wool |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1206254A1 (en) * | 1984-04-27 | 1986-01-23 | Днепропетровский инженерно-строительный институт | Heat-resistant concrete mix |
| CN1418834A (en) * | 2002-11-23 | 2003-05-21 | 杨铧 | One-stage mineral wool technology high-effectly utilizing industrial furnace smelting slag heat |
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2013
- 2013-08-19 CN CN2013103625541A patent/CN103435258A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1206254A1 (en) * | 1984-04-27 | 1986-01-23 | Днепропетровский инженерно-строительный институт | Heat-resistant concrete mix |
| CN1418834A (en) * | 2002-11-23 | 2003-05-21 | 杨铧 | One-stage mineral wool technology high-effectly utilizing industrial furnace smelting slag heat |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326658A (en) * | 2014-08-14 | 2015-02-04 | 宝钢矿棉科技（宁波）有限公司 | Granular wool production line |
| CN104326658B (en) * | 2014-08-14 | 2016-09-07 | 宝钢矿棉科技（宁波）有限公司 | Granulated wool production line |
| CN104496167A (en) * | 2014-09-03 | 2015-04-08 | 宝钢矿棉科技（宁波）有限公司 | Conditioning material for granulated wool and preparation method thereof |
| CN105923987A (en) * | 2016-04-29 | 2016-09-07 | 杨凤义 | High-efficiency energy-saving environment-friendly melting furnace unit for production of basalt rock wool |
| CN105923987B (en) * | 2016-04-29 | 2019-03-08 | 杨凤义 | It is a kind of for producing the melting furnaces device with high-efficient energy-saving environment friendly of basaltic mineral wool |
| CN106365431A (en) * | 2016-08-25 | 2017-02-01 | 山西太钢不锈钢股份有限公司 | Method of producing mineral wool from hot melt slag through electric furnaces |
| CN109320062A (en) * | 2018-10-09 | 2019-02-12 | 交城义望铁合金有限责任公司 | A kind of method of manganese alloy liquid state waste slag hot charging production granulated wool |
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Application publication date: 20131211 |