CN106566905A - Method for preparing iron product through calcium carbide sensible heat - Google Patents
Method for preparing iron product through calcium carbide sensible heat Download PDFInfo
- Publication number
- CN106566905A CN106566905A CN201610958381.3A CN201610958381A CN106566905A CN 106566905 A CN106566905 A CN 106566905A CN 201610958381 A CN201610958381 A CN 201610958381A CN 106566905 A CN106566905 A CN 106566905A
- Authority
- CN
- China
- Prior art keywords
- carbide
- iron
- calcium carbide
- pelletizing
- melt
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for preparing an iron product through calcium carbide sensible heat. The method for preparing the iron product through the calcium carbide sensible heat comprises the following steps that firstly, an iron-containing material, a reducing agent and a bonding agent are evenly mixed, pelleted and dried, and carbon-containing pellets are obtained; secondly, the carbon-containing pellets make contact with calcium carbide melt, the carbon heat reduction reaction is conducted, and the iron product and a calcium carbide lump are obtained; thirdly, after the calcium carbide lump is cooled, acetylene is prepared through water addition, and the iron product enters acetylene sludge; and fourthly, the iron product in the acetylene sludge is selected and obtained. The calcium carbide sensible heat is utilized as a heat source for iron mineral reduction, the utilization rate of the calcium carbide production energy is increased, and meanwhile the metal iron or alloy product is obtained. The method is easy to operate, cost is low, and industrial production is easy.
Description
Technical field
The present invention relates to a kind of method that utilization acetylene stones sensible heat prepares iron product, belongs to metallurgical and chemical field.
Background technology
Carbide is the important source material of chemical industry, and current carbide production technology is to pass through carbon materials and calcareous material
The entrance of carbide furnace upper end is added in furnace of calcium carbide, and in open or closed electric furnace 2000 DEG C～2200 DEG C are heated to, and material is anti-
Should melt to form carbide melt, carbide melt flows out from furnace of calcium carbide discharging opening, in being fitted into the container of cast steel making, in gravity-flow ventilation
Under the conditions of cool down 3 hours or so, the then demoulding becomes carbide product.The production process high energy consumption of carbide, carbide synthesis energy per ton
Consumption 1100kg mark coals, 3400 kilowatt hour electric energy.Wherein, as the sensible heat that calcium carbide production is taken out of accounts for 21% of comprehensive energy consumption or so,
1 ton of carbide is often produced, there are about 231kg mark coal heat wastes to fall.
China is maximum in the world carbide manufacturing country and country of consumption, national carbide yield in 2015 more than 26,000,000 tons,
In calcium carbide production process, heat energy product come out of the stove complete this to cooling during wasted in a large number, and domestic product enterprise
There is no effectively utilizes to this partial heat at present, cause great energy waste.
Chinese patent application publication No. CN 104006669A discloses a kind of acetylene stones sensible heat collection system, including carbide liquid
Storage device is collected, with carbide liquid the high temperature resistant heat insulation plate that storage device open top matches is collected, one end is received with carbide liquid
Collection storage device is connected, the superconduction heat exchange device that the other end is connected with vaporizer, mixes positioned at vaporizer top, for discharging soda pop
The outlet of compound, the carbide liquid collects the cavity of storage device and there is space by inwall and between inwall and constitute sealing structure
Outer wall constitute, the carbide liquid is collected and seamless steel pipe is disposed with the inside and outside wall space of storage device, the filling of seamless steel pipe inside
There is heat-conducting medium, acetylene stones sensible heat is utilized by above-mentioned collection system.The sensible heat utilization system need to be transformed former calcium carbide pot, matched somebody with somebody
Set system is more complicated, and the loss of the part such as high temperature resistant heat insulation plate is serious, relatively costly.
It would therefore be highly desirable to develop a kind of new process is simple acetylene stones sensible heat Application way easy to operate, with low cost.
The content of the invention
The technical problem to be solved is to provide a kind of method that utilization acetylene stones sensible heat prepares iron product, the method
Carbide discharging and sensible heat during cooling are absorbed by iron-bearing mineral carbothermic reduction reaction, metallic iron and ferroalloy is prepared, electricity is realized
The effectively utilizes of stone sensible heat.
To solve above-mentioned technical problem, the technical solution used in the present invention is：
The present invention discloses first a kind of method that utilization acetylene stones sensible heat prepares iron product, comprises the following steps：(1) will contain
Ferrum material, reducing agent and binding agent mix homogeneously, pelletizing, drying obtains carbonaceous pelletizing；(2) by carbonaceous pelletizing and carbide melt
Contact, carries out carbothermic reduction reaction, obtains iron product and calcium carbide lump；(3) add water after calcium carbide lump is cooled down and prepare acetylene, iron product
Into carbide slag；(4) iron product in carbide slag is selected, is obtained final product.
Wherein, step (1) is according to mass parts meter, 100 parts of ferrous material, reducing agent 18-27 parts, binding agent 0-11 parts.Institute
State ferrous material to be selected from：Common iron ore concentrate, vanadium titano-magnetite, high-phosphorus iron ore, lateritic nickel ore, chromite, metallurgical slag, metallurgical powder
The mixture that any one or more than one in dirt or red mud are constituted according to arbitrary proportion.The reducing agent is selected from coke powder, charcoal
The mixture that any one or more than one in powder or coal dust are constituted according to arbitrary proportion.The binding agent is selected from inorganic bond
Any one in agent, organic binder bond or compound binding agent；The compound binding agent is inorganic binder and organic binder bond
According to the mixture that arbitrary proportion is constituted；Wherein described inorganic binder is bentonite, and the organic binder bond is starch.
Step (1) drying is 200-300 DEG C of drying 2-3 hour.The pelletizing is for disk pelletizing or in roll-in ball
Any one.
Step (2) is according to a kg/ton meter, carbonaceous pelletizing：Carbide melt=0-300：1.It is described by carbonaceous pelletizing and carbide
Melt contacts are realized by following any one mode：Before the discharging of (a) carbide melt, carbonaceous pelletizing is spread in the form of grate-layer material
In carbide pot bottom, when carbide melt discharges, carbide melt flows into calcium carbide pot and contacts with carbonaceous pelletizing；Or, (b) in carbide
While melt discharges, carbonaceous pelletizing is added in carbide melt.
Step (4) is described to be selected using ore dressing mode；Wherein, the ore dressing mode is any one in magnetic separation or gravity treatment
Kind.The iron product includes：Metallic iron, or the alloy of ferrum and other elements.
The inventive method prepares iron product using acetylene stones sensible heat, and more than 76%, iron recovery is up to 69% for Iron grade
More than.And under the same terms, ferrous material, reducing agent and binding agent are mixed into into compound, without pelletizing, i.e., with carbide melt
Contact, below 59%, iron recovery is below 51% for the Iron grade of prepared iron product.
Technical solution of the present invention compared with prior art, has the advantages that：
Iron-bearing mineral, reducing agent and binding agent are prepared into pelletizing and add carbide melt by the present invention, effectively reduce reduction
Scaling loss of the fixed carbon in hot environment in agent.The thermal source that the present invention is reduced by the use of acetylene stones sensible heat as iron mineral, is improving electricity
While stone production energy utilization rate, metallic iron or alloy product can also be obtained.The present invention produces high temperature carbide and pyrogenic process
Metallurgy is organically combined, process is simple, easy to operate, with low cost without the need for complicated auxiliary facility, it is easy to industrialized production.
Specific embodiment
Further describe the present invention with reference to specific embodiment, advantages of the present invention and feature will be with description and
It is apparent.It should be understood that the embodiment is only exemplary, any restriction is not constituted to the scope of the present invention.This area
Technical staff should be understood that without departing from the spirit and scope of the invention can to the details of technical solution of the present invention and
Form is modified or is replaced, but these modifications or replacement each fall within protection scope of the present invention.
Embodiment 1
By 100 parts of Iron concentrates (TFe contents 65.0%), 27 parts of coke powders, 3 parts of bentonite mix homogeneously (mass parts), adopt
Disc balling machine pelletizing, pelletizing is dried 3 hours at 200 DEG C, dry bulb moisture 0.8%；Before carbide discharging, melt by per 1 ton of carbide
Body, by 100kg dry bulbs carbide pot bottom is inserted in the form of grate-layer material；Carbide discharging is contacted into calcium carbide pot with pelletizing, is carried out
Carbothermic reduction reaction.After carbide cooling, broken adding water prepares acetylene.Carbide slag obtains 46.3kg metal iron products by magnetic separation,
Iron grade 90.3%, iron recovery 92.6%.
Embodiment 2
By 100 parts of Iron concentrates (TFe contents 65.0%), 27 parts of coke powders, 3 parts of bentonite mix homogeneously (mass parts), adopt
Disc balling machine pelletizing, pelletizing is dried 3 hours at 200 DEG C, dry bulb moisture 0.8%；Before carbide discharging, melt by per 1 ton of carbide
Body, by 200kg dry bulbs carbide pot bottom is inserted in the form of grate-layer material；Carbide discharging is contacted into calcium carbide pot with pelletizing, is carried out
Carbothermic reduction reaction.After carbide cooling, broken adding water prepares acetylene.Carbide slag obtains 85.3kg metal iron products by magnetic separation,
Iron grade 86.1%, iron recovery 85.3%.
Embodiment 3
By 100 parts of Iron concentrates (TFe contents 65.0%), 27 parts of coke powders, 3 parts of bentonite mix homogeneously (mass parts), adopt
Disc balling machine pelletizing, pelletizing is dried 3 hours at 200 DEG C, dry bulb moisture 0.8%；Before carbide discharging, melt by per 1 ton of carbide
Body, by 300kg dry bulbs carbide pot bottom is inserted in the form of grate-layer material；Carbide discharging is contacted into calcium carbide pot with pelletizing, is carried out
Carbothermic reduction reaction.After carbide cooling, broken adding water prepares acetylene.Carbide slag obtains 104.4kg metal iron products by magnetic separation,
Iron grade 76.3%, iron recovery 69.6%.
Embodiment 4
By 100 parts of lateritic nickel ores (TFe be 16%, TNi be 1.70%), 20 parts of coke powder mix homogeneously (mass parts), adopt
To roll-in ball machine pressure ball, pelletizing is dried 2 hours at 300 DEG C, dry bulb moisture 1.3%；Before carbide discharging, melt by per 1 ton of carbide
Body, by 150kg dry bulbs carbide pot bottom is inserted in the form of grate-layer material；Carbide discharging is contacted into calcium carbide pot with pelletizing, is carried out
Carbothermic reduction reaction.After carbide cooling, broken adding water prepares acetylene.Carbide slag obtains 15.68kg ferronickels by magnetic separation, and ferrum is reclaimed
Rate 69.67%, nickel recovery 88.08%.
Embodiment 5
By 100 parts of metallurgical dusts (TFe is 37.8%), 18 parts of coke powders, 2 parts of bentonite, 8 parts of starch solution mix homogeneously
(mass parts), using disc balling machine pelletizing, pelletizing are dried 3 hours at 250 DEG C, dry bulb moisture 0.6%；When carbide discharges,
By per 1 ton of carbide melt, 80kg dry bulbs are thrown in calcium carbide pot, carry out carbothermic reduction reaction.After carbide cooling, the system of adding water is crushed
Standby acetylene.Carbide slag obtains metallic iron 22.8kg, Iron grade 89.1%, iron recovery 90.48% by magnetic separation.
Comparative example 1
By 100 parts of Iron concentrates (TFe contents 65.0%), 27 parts of coke powders, 3 parts of bentonite mix homogeneously (mass parts), by per 1
Ton carbide melt, by the above-mentioned compounds of 100kg carbide pot bottom is inserted in the form of grate-layer material；Carbide discharging enter calcium carbide pot with
Compound is contacted, and carries out carbothermic reduction reaction.After carbide cooling, broken adding water prepares acetylene.Carbide slag is obtained by magnetic separation
25.7kg metallic irons, Iron grade 59.7%, iron recovery 51.4%.
Comparative example 2
By 100 parts of lateritic nickel ores (TFe be 16%, TNi be 1.70%), 20 parts of coke powder mix homogeneously (mass parts)；Carbide
Before discharging, by per 1 ton of carbide melt, 150kg compounds are inserted into carbide pot bottom in the form of grate-layer material；Carbide discharging is entered
Calcium carbide pot is contacted with compound, carries out carbothermic reduction reaction.After carbide cooling, broken adding water prepares acetylene.Carbide sizing is selected
To ferronickel 7.68kg, iron recovery 33.7%%, nickel recovery 42.2%.
Comparative example 3
By 100 parts of metallurgical dusts (TFe is 37.8%), 18 parts of coke powder mix homogeneously (mass parts)；When carbide discharges, by every
1 ton of carbide melt, 80kg compounds are thrown in calcium carbide pot, carry out carbothermic reduction reaction.After carbide cooling, the broken preparation that adds water
Acetylene.Carbide slag obtains metallic iron 3.58kg, iron recovery 14.2% by magnetic separation.
Claims (10)
1. a kind of method that utilization acetylene stones sensible heat prepares iron product, it is characterised in that comprise the following steps：(1) by ferrous material,
Reducing agent and binding agent mix homogeneously, pelletizing, drying obtains carbonaceous pelletizing；(2) by carbonaceous pelletizing and carbide melt contacts, enter
Row carbothermic reduction reaction, obtains iron product and calcium carbide lump；(3) add water after calcium carbide lump is cooled down and prepare acetylene, iron product enters electricity
Rock ballast；(4) iron product in carbide slag is selected, is obtained final product.
2. according to the preparation method described in claim 1, it is characterised in that：Step (1) is according to mass parts meter, ferrous material 100
Part, reducing agent 18-27 parts, binding agent 0-11 parts.
3. according to the preparation method described in claim 1, it is characterised in that step (1) ferrous material is selected from：Common Haematite
In ore deposit, vanadium titano-magnetite, high-phosphorus iron ore, lateritic nickel ore, chromite, metallurgical slag, metallurgical dust or red mud any one or
More than one mixture constituted according to arbitrary proportion.
4. according to the preparation method described in claim 1, it is characterised in that：Step (1) reducing agent selected from coke powder, powdered carbon or
The mixture that any one or more than one in coal dust are constituted according to arbitrary proportion.
5. according to the preparation method described in claim 1, it is characterised in that：Step (1) binding agent selected from inorganic binder,
Any one in organic binder bond or compound binding agent；
The compound binding agent is the mixture that inorganic binder is constituted with organic binder bond according to arbitrary proportion；
Wherein, the inorganic binder is bentonite；The organic binder bond is starch.
6. according to the preparation method described in claim 1, it is characterised in that step (2) is according to a kg/ton meter, carbonaceous pelletizing：Electricity
Stone melt=0-300：1.
7. according to the preparation method described in claim 1, it is characterised in that：Step (1) drying is 200-300 DEG C of drying 2-
3 hours.
8. according to the preparation method described in claim 1, it is characterised in that step (1) pelletizing is for disk pelletizing or to roller
Any one in pressure ball；
Step (4) is described to be selected using ore dressing mode；Wherein, any one of the ore dressing mode in magnetic separation or gravity treatment.
9. in accordance with the method for claim 1, it is characterised in that step (2) is described by carbonaceous pelletizing and carbide melt contacts
Realized by following any one mode：
Before the discharging of (a) carbide melt, carbonaceous pelletizing is laid on into carbide pot bottom in the form of grate-layer material, in the discharging of carbide melt
When, carbide melt flows into calcium carbide pot and contacts with carbonaceous pelletizing；Or,
B () adds carbonaceous pelletizing in carbide melt while carbide melt discharges.
10. according to the preparation method described in claim 1, it is characterised in that the iron product includes：Metallic iron, or ferrum with
The alloy of other elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958381.3A CN106566905A (en) | 2016-11-03 | 2016-11-03 | Method for preparing iron product through calcium carbide sensible heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958381.3A CN106566905A (en) | 2016-11-03 | 2016-11-03 | Method for preparing iron product through calcium carbide sensible heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106566905A true CN106566905A (en) | 2017-04-19 |
Family
ID=58535580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610958381.3A Pending CN106566905A (en) | 2016-11-03 | 2016-11-03 | Method for preparing iron product through calcium carbide sensible heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106566905A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564351A (en) * | 2021-07-23 | 2021-10-29 | 贵州大学 | Method for preparing chromium-containing nickel iron ore oxidized pellets by using chromite and laterite-nickel ore |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291337A (en) * | 2014-10-29 | 2015-01-21 | 北京华福神雾工业炉有限公司 | Method and system utilizing melt residual heat for carbon thermal reduction |
| CN104328279A (en) * | 2014-10-29 | 2015-02-04 | 北京华福神雾工业炉有限公司 | Method of performing carbon thermal reduction by use of waste heat of melt |
| CN105731460A (en) * | 2016-04-18 | 2016-07-06 | 神雾环保技术股份有限公司 | Calcium carbide liquid sensible heat utilization method and system for calcium carbide production process |
-
2016
- 2016-11-03 CN CN201610958381.3A patent/CN106566905A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291337A (en) * | 2014-10-29 | 2015-01-21 | 北京华福神雾工业炉有限公司 | Method and system utilizing melt residual heat for carbon thermal reduction |
| CN104328279A (en) * | 2014-10-29 | 2015-02-04 | 北京华福神雾工业炉有限公司 | Method of performing carbon thermal reduction by use of waste heat of melt |
| CN105731460A (en) * | 2016-04-18 | 2016-07-06 | 神雾环保技术股份有限公司 | Calcium carbide liquid sensible heat utilization method and system for calcium carbide production process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564351A (en) * | 2021-07-23 | 2021-10-29 | 贵州大学 | Method for preparing chromium-containing nickel iron ore oxidized pellets by using chromite and laterite-nickel ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103114201B (en) | Agglomeration method for iron containing dust slime of iron and steel plants | |
| CN101942571B (en) | Method for innocently treating and recycling chromium residues and metallurgical waste material | |
| WO2021115029A1 (en) | Iron-containing metallurgical slag granule graded waste heat recovery and direct reduction system and method | |
| CN104726699B (en) | The high-intensity composite metal pellet being produced using iron containing metallurgical dust and its production technology | |
| CN101280361B (en) | Process method of tailings in vanadium extraction | |
| CN101892382B (en) | Method for extracting high-content nickel, chromium and iron from stainless steel dust | |
| CN105838838B (en) | Method for preparing pure steel by coal gas direct reduction one-step method | |
| CN104195276B (en) | In Iron Ore Powder, join carbon porous block direct-reduction technique | |
| CN103060548B (en) | Method for sintering chromite powder recycled based on ferronickel smelting furnace slag | |
| CN102337408B (en) | Two-step reduction method for recycling stainless steel scales | |
| WO2011029269A1 (en) | Method for innocuously treating chromium residue using metallurgical roasting and blast furnace | |
| CN101967571B (en) | Method for using red-soil nickel ore to produce nickel-iron alloy in tunnel kiln-electric furnace | |
| CN104651561A (en) | Method for smelting iron ore concentrate of vanadium-titanium magnetite in non-blast furnace | |
| CN103451451A (en) | Ferro-nickel alloy production technology with laterite nickel ore processed through oxygen enrichment hot air shaft furnace | |
| CN102277463B (en) | Reduction furnace and device for producing direct reduced iron | |
| CN101538628A (en) | Method for directly reducing laterite-nickel into nickel-bearing ball iron in tunnel kilns | |
| CN102719575A (en) | Converter slag modifier and manufacture and using method thereof | |
| CN105838839B (en) | It prepares the method for granulated iron and prepares the system of granulated iron | |
| CN101538626A (en) | Method for directly producing nickel-bearing pig iron in rotary kilns by using laterite-nickel | |
| CN103993162A (en) | Method for removing iron and phosphorus of high phosphorus ferroniobium concentrate | |
| CN102268502A (en) | Spongy iron preparation method by smelting refractory iron ore (slag) with reduction rotary kiln | |
| CN106319124A (en) | Preparing method for ferrochrome silicon alloy | |
| CN107604157B (en) | A method of blast furnace iron carbon composite briquettes are prepared using hot vessel slag | |
| CN106566905A (en) | Method for preparing iron product through calcium carbide sensible heat | |
| CN104745798A (en) | Sintering process for ferrochromium fine powder ore pellets |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |