CN101519722A - Method for utilizing iron containing metallurgical dust - Google Patents
Method for utilizing iron containing metallurgical dust Download PDFInfo
- Publication number
- CN101519722A CN101519722A CN200910038305A CN200910038305A CN101519722A CN 101519722 A CN101519722 A CN 101519722A CN 200910038305 A CN200910038305 A CN 200910038305A CN 200910038305 A CN200910038305 A CN 200910038305A CN 101519722 A CN101519722 A CN 101519722A
- Authority
- CN
- China
- Prior art keywords
- dust
- iron containing
- iron
- metallurgical dust
- cooled agglomerated
- 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.)
- Pending
Links
Images
Abstract
The invention relates to a method for utilizing iron containing metallurgical dust, which comprises that: steel-making sludge, metallurgical dust-removing powder and iron scale are mixed; the mixed raw materials are sent into a rotary kiln and dried, and the drying temperature is determined according to moisture content of the raw materials and controlled to be between 300 and 500 DEG C; the dried materials are cooled by a cooler, the cooled materials are added with 5 to 10 percent of caking agent by weight, and the material and the caking agent are fully stirred evenly by a wheel-rolling mixer; and finally, the mixture is pressed into cooled agglomerated pellet products by a twin-roller machine, the pressure of the twin-roller machine is more than or equal to 500 Kg/cm<2>, and the cooled agglomerated pellet products are prepared into finished products after separation by a vibration sieve. The method has the advantages of low production energy consumption, high product strength, low moisture content and good quality, and can realize full effective utilization of resources; and the finished products of cooled agglomerated pellets can be directly used as a cooling agent and a slag former in steel making, can improve smelting effect and achieve functions of cooling and slag forming, and can be also used for blast furnace process.
Description
[technical field]
The present invention relates to a kind of method of metallurgical industry ion dust mud contaning comprehensive utilization of resources, especially relate to a kind of method of utilizing of the iron containing metallurgical dust that the mud, flue dust and the iron scale that are produced in the Iron And Steel Industry production process and other iron content meal are carried out comprehensive utilization of resources.
[background technology]
In the Iron And Steel Industry production process, a large amount of mud, flue dust, iron scale and other iron content meal are followed and are given birth to, and with the expansion of output of steel scale proportional increasing substantially.Major ingredient is an iron-bearing material in these dirt mud, and how iron-holder TFe40%～60% effectively utilizes this part iron-containing resource to make it to turn waste into wealth, and is the problem that present steel manufacturing enterprise generally is concerned about.
Ion dust mud contanings such as steel-smelting sewage sludge are a large amount of arbitrarily dischargings in early days, and direct result is a contaminate environment.With the appearance of environmental protective measure and the needs of each steel mill recycling resource; the approach that utilizes of ion dust mud contaning such as mud is all being explored by iron and steel enterprise; part iron enterprise is the smart powder of itself and the iron production agglomerate of preparing burden, but the output of agglomerate and quality are reduced.Though the output of agglomerate, quality are made moderate progress, but because mud is low as the production added value of joining mining way, the energy consumption height, long flow path, utilization ratio and the recovery rate of iron that forms product is low can not give full play to its utility value, causes bigger waste.And, because of too wet agglomerating after the converter mud treated station press filtration, be difficult to evenly allocate in the mineral aggregate owing to mud; And become lump after doing, be difficult to equally evenly allocate in the ore deposit; Mud is concentrated and to be deposited in together, and both occupied grounds becomes the source of pollution of dust again, and this directly causes this part resource still not utilized well at present.Begun subsequently mud is made Study on Technology and the application that ball is produced pelletizing, mud is made carried out high-temperature roasting behind the ball and produce pelletizing, but project investment has been big, and produce environmental pollution and not seen widespread use.
[summary of the invention]
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind ofly have that technology is simple, smail investments and quick rerurn, save energy, reduce cost, and can effectively improve many advantages such as the environment of plant iron containing metallurgical dust utilize method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of iron containing metallurgical dust utilize method, prepare burden to handle and to send into rotary kiln through the batching raw materials treated and dry with steel-smelting sewage sludge, metallurgical dedusting ash and the iron scale smelted, moisture content according to raw material is determined bake out temperature, and bake out temperature is controlled between 300-500 ℃; Material after the drying processing is carried out cooling process by cooler, through-put weight after cooling process is metered into the binding agent of 5-10%, after material and binding agent are stirred by the rolling stirrer, adopt the pair roller ball press to be pressed into the cooled agglomerated pellet product at last, the pressure 〉=500Kg/cm of pair roller ball press
2, the cooled agglomerated pellet product through vibrosieve from after make finished product.
With steel-smelting sewage sludge, metallurgical smelt the processing of preparing burden by a certain percentage of dedusting ash and iron scale, add lime, binding agent etc. and carry out stirring and evenly mixing, after making ball by garden dish pelletizer or pair roller ball press, enter again and obtain mud pelletizing product after rotary kiln or box chain-plate type dryer toast, cool off, the cooled agglomerated pellet product through vibrosieve from after make finished product.
Described rotary kiln or box dryer adopt dries processing from the high-temperature hot-air or the coal gas of fluidizing furnace to material.
The dust that described rotary kiln oven dry is produced when handling adopts fly-ash separator to carry out dust removal process.
Described binding agent includes water glass (having another name called water glass), wilkinite and lime powder.
The churning time of described rolling stirrer is no less than 3 minutes.
The powder that described vibrosieve is produced from the back adds in the rolling stirrer by weight metering and mixes stirring.
The intensity of described cooled agglomerated pellet finished product is no less than 17Kg/cm
2
Intensity for the cooled agglomerated pellet finished product of making steel is no less than 17Kg/cm
2, be no less than 25Kg/cm for the intensity of the cooled agglomerated pellet finished product of smelting iron
2
The shape of cooled agglomerated pellet includes ellipse, round and square.
The invention has the beneficial effects as follows: be main raw material (or single raw material) with the ion dust mud contaning, the iron scale (iron scale) and a spot of binding agent that produce in the adapted steel rolling production process, mix by a certain percentage, through middle temperature is dried (also can select harmful elements such as sulphur removal) according to arts demand, cooling, stir, get after the compression moulding (or through the batching stirring and evenly mixing, ball made by disk or the compacting balling-up gets after toast), it is low to have production energy consumption, the product strength height, moisture content is low, the measured advantage of matter, can realize that the whole of resource effectively utilize, the cooled agglomerated pellet finished product can be directly used in steel-making and make refrigerant, slag former, can improve metallurgical effect, play cooling, fluxing effect, also can be used for blast-furnace smelting, its characteristics are as follows:
The one, stable components, epigranular, intensity height add cooled agglomerated pellet during steel-making, and the fusing point of slag is reduced, and guarantee that slag has good flowability, make its quick slagging, in steel-making as thermoregulation agent, good cooling results, 3.5-4 ℃ of average 100kg coolings.
The 2nd, reduce iron and steel stock consumption and lime consumption in the steelmaking process.In steelmaking process, can directly substitute the part steel scrap on the one hand, reduce iron and steel stock consumption, make the sludge resource high added valueization; Because another major ingredient that contains in the mud is a calcium oxide, steel-making adds pelletizing can reduce lime consumption on the other hand.
The 3rd, can prolong furnace campaign and life-span of oxygen lance, reduce sticking rifle accident.It is few to splash, and bits are difficult for sticking rifle; Alkalescence is big, and it is fast to change slag, is difficult for corroding fire proof material of furnace lining.
The 4th, the ore deposit is joined in the production that is used for blast furnace ironmaking, can significantly improve the ventilation property of stock column, improves combustion intensity, and increases molten iron output.
[description of drawings]
Fig. 1 is a technical process block diagram of the present invention.
[embodiment]
The present invention is further described below in conjunction with drawings and Examples:
Referring to Fig. 1, a kind of iron containing metallurgical dust utilize method, with steel-smelting sewage sludge, smelt the processing of preparing burden of dedusting ash and iron scale, to send into rotary kiln through the raw material after batching is handled dries, moisture content according to raw material is determined bake out temperature, employing is dried processing from the high-temperature hot-air of fluidizing furnace to material, and bake out temperature is controlled between 300-500 ℃, and the dust that rotary kiln oven dry is simultaneously produced when handling carries out dust removal process by fly-ash separator; Material after the drying processing is carried out cooling process by cooler, through-put weight after cooling process is metered into the binding agent of 5-10%, binding agent adopts water glass (water glass), wilkinite or lime powder, after material and binding agent are stirred by the rolling stirrer, the churning time of described rolling stirrer is no less than 3 minutes, be preferably 5 minutes, adopt the pair roller ball press to be pressed into the cooled agglomerated pellet product at last, the pressure of pair roller ball press is no less than 500Kg/cm
2, be preferably 1000Kg/cm
2, the cooled agglomerated pellet product through vibrosieve from after make finished product, simultaneously after powder that vibrosieve is produced from the back is by weight metering, mix stirring in the adding rolling stirrer.The intensity of prepared cooled agglomerated pellet finished product is no less than 17Kg/cm
2, wherein the intensity for the cooled agglomerated pellet finished product of making steel is no less than 17Kg/cm
2, be no less than 25Kg/cm for the intensity of the cooled agglomerated pellet finished product of smelting iron
2
The cooled agglomerated pellet The Application of Technology, come back to the steel-making use after the iron scale process processing that mud, smelting dedusting ash and the rolling process that steel-making is produced produces, improve metallurgical effect, play cooling, slag making, waste material is become steel again, help improving the quality of steel, reduced the STEELMAKING PRODUCTION cost, realized the benign cycle of steelmaking process.
Cooled agglomerated pellet also can be directly used in blast-furnace smelting, with the existing furnace charge of its instead of part, as one of raw material of smelting iron, can improve the ventilation property of stock column, improves combustion intensity, increases molten iron output, reduces production costs.
The cooled agglomerated pellet product physical and chemical index that gets through aforesaid method processing is as follows:
Annotate: Chemical Composition TFe depends on mud raw material ferrous grade, also can join the smart powder of iron as required and reach the regulation grade requirement.
The present invention pays much attention to the control of environmental pollution, the most important thing is to reduce or eliminate source of pollution from technology, secondly is to take necessary environmental practice.
The one, treating flour dust: the principal pollutant in procedure for preparation are the material airborne dust, and the dust source mainly is an airborne dust in steel-making dedusting ash, starchy binder carrying, the blending process.Measure of control: be provided with between the dedusting ash special use unloads, stores; Purchase bag dress dry powder, make dust not excessive; Go along with sb. to guard him around the workshop in addition, avoid the wind airborne dust.For oven dry tail flue dust, at the rotary kiln discharge port water curtain dust-removal system is set at the principal pollutant of baking operation, flue gas qualified discharge after the water curtain dedusting, water recycle at settling tank, and the dirt mud of collection returns after the stock yard pre-treatment as raw materials for production.
The 2nd, noise abatement: the equipment that produces higher noise in the production process is the dust removal installation induced draft fan, adopt following measure to administer sound pollution: the dust removal installation blower fan is provided with sourdine, high-speed fan is adopted vibroshock, and establish independently that Ventilator Room intercepts sound wave by buildings, make plant area noise control below 85db (A).
The present invention has reduced investment, floor space is little, production energy consumption is low, good product quality, pollution-free, shorten the product application flow process, can realize the high price value utilization of iron containing metallurgical dust.
Claims (10)
1, a kind of iron containing metallurgical dust utilizes method, it is characterized in that: steel-smelting sewage sludge, metallurgical smelt the processing of preparing burden earlier of dedusting ash and iron scale, to send into rotary kiln through the raw material after batching is handled dries, moisture content according to raw material is determined bake out temperature, and bake out temperature is controlled between 300-500 ℃; Material after the drying processing is carried out cooling process by cooler, through-put weight after cooling process is metered into the binding agent of 5-10%, after material and binding agent are stirred by the rolling stirrer, adopt the pair roller ball press to be pressed into the cooled agglomerated pellet product at last, the pressure 〉=500Kg/cm of pair roller ball press
2, the cooled agglomerated pellet product through vibrosieve from after make finished product.
2, iron containing metallurgical dust as claimed in claim 1 utilizes method, it is characterized in that: with steel-smelting sewage sludge, metallurgical smelt the processing of preparing burden by a certain percentage of dedusting ash and iron scale, add lime and binding agent and carry out stirring and evenly mixing, after making ball by garden dish pelletizer or pair roller ball press, enter again and obtain mud pelletizing product after rotary kiln or box chain-plate type dryer toast, cool off, the cooled agglomerated pellet product through vibrosieve from after make finished product.
3, iron containing metallurgical dust as claimed in claim 1 or 2 utilize method, it is characterized in that: described rotary kiln or box dryer adopt dries processing from the high-temperature hot-air or the coal gas of fluidizing furnace to material.
4, iron containing metallurgical dust as claimed in claim 1 or 2 utilize method, it is characterized in that: the dust that described rotary kiln oven dry is produced when handling adopts fly-ash separator to carry out dust removal process.
5, iron containing metallurgical dust as claimed in claim 1 or 2 utilize method, it is characterized in that: described binding agent includes water glass, wilkinite and lime powder.
6, iron containing metallurgical dust as claimed in claim 1 utilize method, it is characterized in that: the churning time of described rolling stirrer is no less than 3 minutes.
7, iron containing metallurgical dust as claimed in claim 1 or 2 utilize method, it is characterized in that: the powder that described vibrosieve is produced from the back adds in the rolling stirrer by weight metering and mixes stirring.
8, iron containing metallurgical dust as claimed in claim 1 or 2 utilize method, it is characterized in that: the intensity of described cooled agglomerated pellet finished product is no less than 17Kg/cm
2
9, iron containing metallurgical dust as claimed in claim 1 or 2 utilize method, it is characterized in that: the intensity for the cooled agglomerated pellet finished product of steel-making is no less than 17Kg/cm
2, be no less than 25Kg/cm for the intensity of the cooled agglomerated pellet finished product of smelting iron
2
10, want the method for utilizing of 1 described iron containing metallurgical dust as right, it is characterized in that: the shape of cooled agglomerated pellet includes ellipse, round and square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910038305A CN101519722A (en) | 2009-03-25 | 2009-03-25 | Method for utilizing iron containing metallurgical dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910038305A CN101519722A (en) | 2009-03-25 | 2009-03-25 | Method for utilizing iron containing metallurgical dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101519722A true CN101519722A (en) | 2009-09-02 |
Family
ID=41080518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910038305A Pending CN101519722A (en) | 2009-03-25 | 2009-03-25 | Method for utilizing iron containing metallurgical dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101519722A (en) |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367499A (en) * | 2011-09-02 | 2012-03-07 | 北京首钢国际工程技术有限公司 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
| CN101914654B (en) * | 2010-01-11 | 2012-05-23 | 济南钢铁集团总公司生产服务公司 | Coolant for steel making with red mud and preparation process thereof |
| CN102534198A (en) * | 2010-12-11 | 2012-07-04 | 鞍山钢铁集团公司 | Method for pelletizing refined iron powder extracted from steel slag for converter steel making |
| CN102918169A (en) * | 2010-04-19 | 2013-02-06 | 西门子Vai金属科技有限责任公司 | Bentonite-bonded pressed articles from fine-grain oxidic iron carriers |
| CN103103310A (en) * | 2011-11-11 | 2013-05-15 | 攀钢集团西昌钢钒有限公司 | Vanadium extraction cold pressing block and preparation method and applications thereof and vanadium extraction method |
| CN103131818A (en) * | 2013-02-22 | 2013-06-05 | 江苏省沙钢钢铁研究院有限公司 | Slagging agent used in converter steelmaking, and preparation method thereof |
| CN103276200A (en) * | 2013-07-01 | 2013-09-04 | 济南钢铁集团总公司生产服务公司 | Smelting steel ball and preparation technology thereof |
| CN103589864A (en) * | 2013-09-17 | 2014-02-19 | 新疆金特钢铁股份有限公司 | Steelmaking converter smoke sludge and continuous casting scale ball pressing process |
| CN104946843A (en) * | 2014-03-25 | 2015-09-30 | 宝山钢铁股份有限公司 | Hot-rolled dedusting powder briquette as well as preparation method and application thereof |
| CN105177196A (en) * | 2015-10-08 | 2015-12-23 | 宝钢发展有限公司 | Iron-containing dust slime treatment process with heating conducted through coal gas and multi-frequency electricity in mixed mode |
| CN105219954A (en) * | 2014-06-30 | 2016-01-06 | 宝钢不锈钢有限公司 | A kind of recoverying and utilizing method of dedusting ash of stainless steel |
| CN106591575A (en) * | 2017-03-11 | 2017-04-26 | 重庆臻焱节能环保科技有限公司 | Low-energy-consumption cold-pressing pellet and preparation method thereof |
| CN106591563A (en) * | 2017-01-17 | 2017-04-26 | 中冶华天工程技术有限公司 | Continuous casting workshop scale dehydration and drying process and device |
| CN106594753A (en) * | 2016-11-11 | 2017-04-26 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Dedusting ash treatment system and dedusting ash treatment method |
| CN106702154A (en) * | 2016-11-30 | 2017-05-24 | 振石集团东方特钢有限公司 | Making method of stainless steel solid waste pellet |
| CN106755987A (en) * | 2016-12-22 | 2017-05-31 | 山东莱钢永锋钢铁有限公司 | Inexpensive short route sludge reclaims pressure ball new technology |
| CN107012284A (en) * | 2017-03-02 | 2017-08-04 | 新兴铸管股份有限公司 | The Application way of converter dust-removing ash |
| CN107119187A (en) * | 2017-05-18 | 2017-09-01 | 天津瑞利鑫环保科技有限公司 | A kind of dedusting ash cold-consolidated ball production system and technique |
| CN107267747A (en) * | 2017-06-20 | 2017-10-20 | 武汉钢铁有限公司 | The method for promoting chromium-bearing sludge dispersed in agglomeration for iron mine material |
| CN108148947A (en) * | 2017-12-29 | 2018-06-12 | 汪逸凡 | A kind of semisteel smelting slag former and preparation method thereof |
| CN108396110A (en) * | 2017-02-05 | 2018-08-14 | 鞍钢股份有限公司 | It is a kind of that mud is sunk as the converter slagging agent and preparation method of raw material using whirling well |
| CN110016551A (en) * | 2019-05-06 | 2019-07-16 | 中冶华天工程技术有限公司 | Cold rolling sludge converter resource utilization method |
| CN111733323A (en) * | 2020-07-21 | 2020-10-02 | 张家港宏昌钢板有限公司 | Method for reducing water consumption for pelletizing of iron-containing dust and mud |
| CN112961976A (en) * | 2021-01-29 | 2021-06-15 | 武汉科技大学 | Preparation and blending degree evaluation method of sintering material precursor |
| CN112981095A (en) * | 2021-02-08 | 2021-06-18 | 山西太钢不锈钢股份有限公司 | Iron scale ball pressing process |
| CN113061019A (en) * | 2021-04-16 | 2021-07-02 | 山西太钢工程技术有限公司 | Method for preparing shaped brick from chromic acid-containing mud through low-temperature drying modification of rotary kiln |
| CN113215395A (en) * | 2021-05-18 | 2021-08-06 | 新疆八一钢铁股份有限公司 | Production method of cold-solidified pellet |
| CN114317952A (en) * | 2021-12-10 | 2022-04-12 | 江苏沙钢集团有限公司 | Method for reprocessing and utilizing iron scale |
-
2009
- 2009-03-25 CN CN200910038305A patent/CN101519722A/en active Pending
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914654B (en) * | 2010-01-11 | 2012-05-23 | 济南钢铁集团总公司生产服务公司 | Coolant for steel making with red mud and preparation process thereof |
| CN102918169A (en) * | 2010-04-19 | 2013-02-06 | 西门子Vai金属科技有限责任公司 | Bentonite-bonded pressed articles from fine-grain oxidic iron carriers |
| CN102534198A (en) * | 2010-12-11 | 2012-07-04 | 鞍山钢铁集团公司 | Method for pelletizing refined iron powder extracted from steel slag for converter steel making |
| CN102367499B (en) * | 2011-09-02 | 2013-07-17 | 北京首钢国际工程技术有限公司 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
| CN102367499A (en) * | 2011-09-02 | 2012-03-07 | 北京首钢国际工程技术有限公司 | Technology for producing cold-bonded pellets from dust collected by converter dry dedusting |
| CN103103310A (en) * | 2011-11-11 | 2013-05-15 | 攀钢集团西昌钢钒有限公司 | Vanadium extraction cold pressing block and preparation method and applications thereof and vanadium extraction method |
| CN103103310B (en) * | 2011-11-11 | 2014-12-17 | 攀钢集团西昌钢钒有限公司 | Vanadium extraction cold pressing block and preparation method and applications thereof and vanadium extraction method |
| CN103131818A (en) * | 2013-02-22 | 2013-06-05 | 江苏省沙钢钢铁研究院有限公司 | Slagging agent used in converter steelmaking, and preparation method thereof |
| CN103131818B (en) * | 2013-02-22 | 2014-12-31 | 江苏省沙钢钢铁研究院有限公司 | Slagging agent used in converter steelmaking, and preparation method thereof |
| CN103276200B (en) * | 2013-07-01 | 2015-03-04 | 济南钢铁集团总公司生产服务公司 | Smelting steel ball and preparation technology thereof |
| CN103276200A (en) * | 2013-07-01 | 2013-09-04 | 济南钢铁集团总公司生产服务公司 | Smelting steel ball and preparation technology thereof |
| CN103589864A (en) * | 2013-09-17 | 2014-02-19 | 新疆金特钢铁股份有限公司 | Steelmaking converter smoke sludge and continuous casting scale ball pressing process |
| CN104946843A (en) * | 2014-03-25 | 2015-09-30 | 宝山钢铁股份有限公司 | Hot-rolled dedusting powder briquette as well as preparation method and application thereof |
| CN104946843B (en) * | 2014-03-25 | 2017-05-31 | 宝山钢铁股份有限公司 | A kind of hot rolling dust-removing powder pressure ball, Preparation Method And The Use |
| CN105219954A (en) * | 2014-06-30 | 2016-01-06 | 宝钢不锈钢有限公司 | A kind of recoverying and utilizing method of dedusting ash of stainless steel |
| CN105177196A (en) * | 2015-10-08 | 2015-12-23 | 宝钢发展有限公司 | Iron-containing dust slime treatment process with heating conducted through coal gas and multi-frequency electricity in mixed mode |
| CN106594753B (en) * | 2016-11-11 | 2018-12-04 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of dedusting ash treatment system and its processing method |
| CN106594753A (en) * | 2016-11-11 | 2017-04-26 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Dedusting ash treatment system and dedusting ash treatment method |
| CN106702154A (en) * | 2016-11-30 | 2017-05-24 | 振石集团东方特钢有限公司 | Making method of stainless steel solid waste pellet |
| CN106702154B (en) * | 2016-11-30 | 2019-08-20 | 振石集团东方特钢有限公司 | A kind of method of stainless steel solid waste pelletizing production |
| CN106755987A (en) * | 2016-12-22 | 2017-05-31 | 山东莱钢永锋钢铁有限公司 | Inexpensive short route sludge reclaims pressure ball new technology |
| CN106591563A (en) * | 2017-01-17 | 2017-04-26 | 中冶华天工程技术有限公司 | Continuous casting workshop scale dehydration and drying process and device |
| CN108396110B (en) * | 2017-02-05 | 2019-10-29 | 鞍钢股份有限公司 | It is a kind of that mud is sunk as the converter slagging agent and preparation method of raw material using whirling well |
| CN108396110A (en) * | 2017-02-05 | 2018-08-14 | 鞍钢股份有限公司 | It is a kind of that mud is sunk as the converter slagging agent and preparation method of raw material using whirling well |
| CN107012284A (en) * | 2017-03-02 | 2017-08-04 | 新兴铸管股份有限公司 | The Application way of converter dust-removing ash |
| CN106591575A (en) * | 2017-03-11 | 2017-04-26 | 重庆臻焱节能环保科技有限公司 | Low-energy-consumption cold-pressing pellet and preparation method thereof |
| CN107119187A (en) * | 2017-05-18 | 2017-09-01 | 天津瑞利鑫环保科技有限公司 | A kind of dedusting ash cold-consolidated ball production system and technique |
| CN107119187B (en) * | 2017-05-18 | 2018-08-28 | 天津瑞利鑫环保科技有限公司 | A kind of dedusting ash cold-consolidated ball production system and technique |
| CN107267747A (en) * | 2017-06-20 | 2017-10-20 | 武汉钢铁有限公司 | The method for promoting chromium-bearing sludge dispersed in agglomeration for iron mine material |
| CN108148947A (en) * | 2017-12-29 | 2018-06-12 | 汪逸凡 | A kind of semisteel smelting slag former and preparation method thereof |
| CN110016551A (en) * | 2019-05-06 | 2019-07-16 | 中冶华天工程技术有限公司 | Cold rolling sludge converter resource utilization method |
| CN111733323A (en) * | 2020-07-21 | 2020-10-02 | 张家港宏昌钢板有限公司 | Method for reducing water consumption for pelletizing of iron-containing dust and mud |
| CN112961976A (en) * | 2021-01-29 | 2021-06-15 | 武汉科技大学 | Preparation and blending degree evaluation method of sintering material precursor |
| CN112961976B (en) * | 2021-01-29 | 2022-06-14 | 武汉科技大学 | Preparation and blending degree evaluation method of sintering material precursor |
| CN112981095A (en) * | 2021-02-08 | 2021-06-18 | 山西太钢不锈钢股份有限公司 | Iron scale ball pressing process |
| CN112981095B (en) * | 2021-02-08 | 2023-01-31 | 山西太钢不锈钢股份有限公司 | Iron scale ball pressing process |
| CN113061019A (en) * | 2021-04-16 | 2021-07-02 | 山西太钢工程技术有限公司 | Method for preparing shaped brick from chromic acid-containing mud through low-temperature drying modification of rotary kiln |
| CN113215395A (en) * | 2021-05-18 | 2021-08-06 | 新疆八一钢铁股份有限公司 | Production method of cold-solidified pellet |
| CN114317952A (en) * | 2021-12-10 | 2022-04-12 | 江苏沙钢集团有限公司 | Method for reprocessing and utilizing iron scale |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101519722A (en) | Method for utilizing iron containing metallurgical dust | |
| CN101942571B (en) | Method for innocently treating and recycling chromium residues and metallurgical waste material | |
| CN103114201B (en) | Agglomeration method for iron containing dust slime of iron and steel plants | |
| CN103042223B (en) | A kind of production technology of reduced iron powder | |
| CN101476001B (en) | Method for smelting medium titanium slag by blast furnace | |
| CN101270410A (en) | Cold bonded pellet and method of producing the same | |
| CN101560583B (en) | Rotary furnace cooling agent made of metallurgical waste material product and manufacture method thereof | |
| CN101892382B (en) | Method for extracting high-content nickel, chromium and iron from stainless steel dust | |
| CN104046773A (en) | Technique for producing cold-bonded pellets from steel converter dust removal ash | |
| CN109652643B (en) | High-quality sinter for COREX smelting reduction iron-making process and preparation method thereof | |
| WO2011029269A1 (en) | Method for innocuously treating chromium residue using metallurgical roasting and blast furnace | |
| CN101525689B (en) | Method for preparing carbonaceous autoreduction cold pressing block and application thereof | |
| CN104789759A (en) | Metallurgical iron-containing powder material resource utilization method | |
| CN103146913B (en) | Method for treating iron-containing dust of iron and steel plant by using cupola furnace | |
| CN107488784B (en) | A kind of blast furnace ironmaking superfluxed pellets and its production method | |
| CN102912209B (en) | Process for producing bead ferronickel by rotary hearth furnace through coal-based reduction of red soil nickel oxide ores | |
| CN103952540B (en) | Ion dust mud contaning and high silicon iron concentrate is utilized to produce the technique of prereduced burden | |
| CN106811597A (en) | A kind of method that utilization limekiln exhaust gas produce blast furnace cold-bonded carbonaceous pelletizing | |
| CN101492752A (en) | Reduction-fusion iron manufacturing process for coal-bearing pellets | |
| CN114540617A (en) | Preparation method and application method of redox briquetting of converter fly ash | |
| CN107779534B (en) | Process for treating zinc-containing and iron dust and mud in iron and steel plant by shaft furnace method | |
| CN101560581B (en) | Rotary furnace cooling agent and manufacturing method thereof | |
| CN103627897B (en) | Rich iron cooled agglomerated pellet and manufacturing process thereof and purposes | |
| CN101560582B (en) | Rotary furnace cooling agent made of metallurgical waste material product and using method thereof | |
| CN205170892U (en) | Coal -based reduction iron -smelting device and coal -based reduction iron -smelting 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090902 |