CN104593030A - Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces - Google Patents
Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces Download PDFInfo
- Publication number
- CN104593030A CN104593030A CN201510076458.XA CN201510076458A CN104593030A CN 104593030 A CN104593030 A CN 104593030A CN 201510076458 A CN201510076458 A CN 201510076458A CN 104593030 A CN104593030 A CN 104593030A
- Authority
- CN
- China
- Prior art keywords
- coal
- coking
- coking coal
- large inert
- inert component
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
Abstract
The invention discloses a coking and coal blending method for improving the bonding strength of large inert components and anisotropic interfaces. The coking and coal blending method comprises the following steps: 1) conventionally crushing coking coals with large inert components, and controlling the part with size fraction less than 3 mm to account for more than 80% according to the conventional coking coal crushing fineness control method; 2) preparing sodium carboxymethyl cellulose into an aqueous solution with the mass concentration of 0.5-5%, and spraying the aqueous solution on the surfaces of pre-crushed coking coals with large inert components; 3) mixing with other individual coking coals for coking, wherein the other individual coking coals comprise coking coal, 1/3 coking coal and fat coal. According to the coking and coal blending method for improving the bonding strength of large inert components and anisotropic interfaces, sodium carboxymethyl cellulose is taken as a coking binder, to effectively improve the bonding strength of large inert components in the coking coals and anisotropic interfaces, so that non-caking coals, anthracites, unscreened powdered cokes and other coals with high content of large inert components can participate in coking under normal crushing conditions, the process is simplified, the coking coal resources are expanded, and the coal blending costs are reduced.
Description
Technical field
The invention belongs to metallurgical coking technology field, be specifically related to a kind of coke making and coal blending method improving large inert component and anistropic interface bonding strength.
Background technology
Coke quality is high and stable, is one of primary condition of smooth operation of furnace.Coke strenth quality is very large on the impact of blast furnace operating and molten steel quality.The physicochemical property of solid material is mainly by the impact of its heterogeneous microstructure, and lot of experiments research and production practice show, the size of inert component and the impact of different occurrence status matter on Coke Strength sizes are very large, for the average maximum reflectivity of vitrinite
coking coal, owing to there is not melting and contraction in coking process in inert component, when its diameter is greater than 300um, due to the difference with around coal grain shrinkage character, inert component becomes larger Crack Center, easily and other Component seperation of surrounding, after causing coke thermal response, intensity is low, coke enters easy efflorescence after gasification reaction in blast furnace, and in blast furnace, Gas Flow resistance increases, and is unfavorable for smooth operation of furnace.
The destruction of large inertia structure STRENGTH ON COKE cold and hot state intensity when participating in coal-blending coking for avoiding non caking coal, hard coal, coke powder etc., take at present coking coal to be carried out broken method, control diameter in mixed coal and be greater than the total amount of 300um inert component, but this method need increase pre-disintegrator, consuming electric power, deposits the airborne dust problem of coal dust in conveying and loading furnace process after being pulverized simultaneously.
Summary of the invention:
Technical problem to be solved by this invention is to provide a kind of coke making and coal blending method improving large inert component and anistropic interface bonding strength, the destruction of large inertia structure STRENGTH ON COKE cold and hot state intensity during to overcome in prior art for avoiding non caking coal, hard coal, coke powder etc. to participate in coal-blending coking, need that coking coal high for large inertia structural content is carried out super fine crushing and be greater than the total amount of 300um inert component to control diameter in mixed coal, thus need to increase ultra-fine pre-disintegrator, current consumption is large, and the coal dust after simultaneously pulverizing exists the defect of airborne dust in conveying and loading furnace process.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of coke making and coal blending method improving large inert component and anistropic interface bonding strength, described blending method comprises the coking coal with large inert component, described in there is large inert component coking coal be that diameter is greater than the non caking coal of inert component content >=30% of 300um, hard coal and/or coke powder; Described blending method comprises the steps:
1) routine fragmentation is carried out to the coking coal with large inert component, the traditionally broken fineness control method of coking coal, control is less than 3mm grade part and accounts for more than 80%, wherein 1mm ~ 3mm grade mass percent accounts for 15% ~ 20%, 0.3mm ~ 1mm grade mass percent accounts for 25% ~ 30%, be less than below 0.3mm part mass per-cent and account for 35% ~ 40%, surplus is the part being greater than 3mm;
2) Xylo-Mucine (CMC) is mixed with the aqueous solution that mass concentration is 0.5 ~ 5%, be sprayed at through the conventional broken surface with the coking coal of large inert component, fountain height is 2 ~ 10 liters of/ton of coking coals;
3) with other single coking coal mixed cokings, other single coking coals described at least comprise coking coal, 1/3 coking coal and rich coal.
Further, in described blending method each single coking coal be coking coal, a kind of, the coking coal with large inert component of 1/3 coking coal, rich coal, bottle coal and lean coal; Each single coking coal is a kind of 0 ~ 20%, the coking coal 5 ~ 20% with large inert component of coking coal 25 ~ 50%, 1/3 coking coal 10 ~ 30%, rich coal 10 ~ 25%, bottle coal and lean coal by weight percentage.Preferably, each single coking coal is a kind of 10 ~ 15%, the coking coal 10 ~ 15% with large inert component of coking coal 28 ~ 32%, 1/3 coking coal 20 ~ 25%, rich coal 15 ~ 20%, bottle coal and lean coal by weight percentage.
Further, in described blending method each single coking coal be coking coal, 1/3 coking coal, rich coal, bottle coal, lean coal and there is the coking coal of large inert component; Each single coking coal by weight percentage for coking coal 30 ~ 40%, 1/3 coking coal 15 ~ 25%, rich coal 15 ~ 20%, bottle coal 5 ~ 15%, lean coal 5 ~ 15%, there is the coking coal 5 ~ 15% of large inert component.
The present invention has following beneficial effect:
1) adopt Xylo-Mucine (CMC) as coking binding agent, effectively can improve large inert component and other anistropic interface bonding strengths in coking coal, thus make non caking coal, coal that this kind of large inert component content of coke powder that hard coal does not carry out sieving is high can participate in coking under conventional broken condition, use the coke powder of 4mm sieve screening also can participate in coking directly, ultrafine crusher is no longer needed to carry out superfine grinding, simplify technique, expand coking coal resource, reduce coal blending cost.
2) make firm by ramming in nothing, without coal damping, without moulded coal, under the dress coke oven dry coke quenching conditions of tradition more than 4.3 meters top, adopt the inventive method coal-blending coking gained hot strength of coke CSR 60 ~ 70%, cold strength M
40at 85 ~ 89%, M
105.5 ~ 7%.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Embodiment 1:
(1) chlorine adding ratio: coking coal 30%, 1/3 coking coal 25%, bottle coal 10%, rich coal 20%, hard coal 15%.
(2) hard coal precomminution Task-size Controlling is less than 3mm part >=80%, wherein 1mm ~ 3mm grade mass percent accounts for 20%, 0.3mm ~ 1mm grade mass percent accounts for 25%, and be less than below 0.3mm part mass per-cent and account for 35%, surplus is the part being greater than 3mm; Preparation Xylo-Mucine (CMC) aqueous solution, makes its mass concentration be 2%.Xylo-Mucine (CMC) aqueous solution is sprayed at the surface of the hard coal after precomminution, fountain height is 3 liters of/ton of coals.
(3) to coking by coke oven after the hard coal after surface sprinkling Xylo-Mucine (CMC) aqueous solution mixes according to blending ratio with other coking coals.
Embodiment 2:
(1) chlorine adding ratio: coking coal 30%, 1/3 coking coal 20%, bottle coal 15%, rich coal 15%, coke powder 10%, lean coal 10%.
(2) coke powder precomminution Task-size Controlling is less than 3mm part >=80%, wherein 1mm ~ 3mm grade mass percent accounts for 18%, 0.3mm ~ 1mm grade mass percent accounts for 28%, and be less than below 0.3mm part mass per-cent and account for 38%, surplus is the part being greater than 3mm; Preparation Xylo-Mucine (CMC) aqueous solution, makes its mass concentration be 1%.Xylo-Mucine (CMC) aqueous solution is sprayed at the surface of the coke powder after precomminution, fountain height is 5 liters of/ton of coals.
(3) to coking by coke oven after the coke powder after surface sprinkling Xylo-Mucine (CMC) aqueous solution mixes according to blending ratio with other coking coals.
Embodiment 3:
(1) chlorine adding ratio: coking coal 30%, 1/3 coking coal 20%, bottle coal 15%, rich coal 20%, hard coal 10%, lean coal 5%.
(2) hard coal precomminution Task-size Controlling is less than 3mm part >=80%, wherein 1mm ~ 3mm grade mass percent accounts for 15%, 0.3mm ~ 1mm grade mass percent accounts for 25%, and be less than below 0.3mm part mass per-cent and account for 40%, surplus is the part being greater than 3mm; Preparation Xylo-Mucine (CMC) aqueous solution, makes its mass concentration be 1%.Xylo-Mucine (CMC) aqueous solution is sprayed at the surface of the hard coal after precomminution, fountain height is 3 liters of/ton of coals.
(3) to coking by coke oven after the hard coal after surface sprinkling Xylo-Mucine (CMC) aqueous solution mixes according to blending ratio with other coking coals.
At tradition more than 4.3 meters top dress coke ovens without coal damping, without under moulded coal, dry coke quenching condition, employing the inventive method gained hot strength of coke CSR 60 ~ 70%, cold strength M40 at 85 ~ 89%, M10 5.5 ~ 7%.Coal blending cost about 2,000,000 yuan/month is reduced before adopting than technology.
Claims (4)
1. one kind is improved the coke making and coal blending method of large inert component and anistropic interface bonding strength, described blending method comprises the coking coal with large inert component, described in there is large inert component coking coal be that diameter is greater than the non caking coal of inert component content >=30% of 300um, hard coal and/or coke powder; It is characterized in that: the method comprises the following steps:
1) routine fragmentation is carried out to the coking coal with large inert component, the traditionally broken fineness control method of coking coal, control is less than 3mm grade part and accounts for more than 80%, wherein 1mm ~ 3mm grade mass percent accounts for 15% ~ 20%, 0.3mm ~ 1mm grade mass percent accounts for 25% ~ 30%, be less than below 0.3mm part mass per-cent and account for 35% ~ 40%, surplus is the part being greater than 3mm;
2) Xylo-Mucine is mixed with the aqueous solution that mass concentration is 0.5 ~ 5%, be sprayed at through the conventional broken surface with the coking coal of large inert component, fountain height is 2 ~ 10 liters of/ton of coking coals;
3) with other single coking coal mixed cokings, other single coking coals described at least comprise coking coal, 1/3 coking coal and rich coal.
2. the coke making and coal blending method of the large inert component of improvement according to claim 1 and anistropic interface bonding strength, is characterized in that:
In described blending method each single coking coal be coking coal, a kind of, the coking coal with large inert component in 1/3 coking coal, rich coal, bottle coal and lean coal; Each single coking coal is a kind of 0 ~ 20%, the coking coal 5 ~ 20% with large inert component in coking coal 25 ~ 50%, 1/3 coking coal 10 ~ 30%, rich coal 10 ~ 25%, bottle coal and lean coal by weight percentage.
3. the coke making and coal blending method of the large inert component of improvement according to claim 2 and anistropic interface bonding strength, is characterized in that:
Described each single coking coal is a kind of 10 ~ 15%, the coking coal 10 ~ 15% with large inert component in coking coal 28 ~ 32%, 1/3 coking coal 20 ~ 25%, rich coal 15 ~ 20%, bottle coal and lean coal by weight percentage.
4. the coke making and coal blending method of the large inert component of improvement according to claim 1 and anistropic interface bonding strength, is characterized in that:
In described blending method each single coking coal be coking coal, 1/3 coking coal, rich coal, bottle coal, lean coal and there is the coking coal of large inert component; Each single coking coal by weight percentage for coking coal 30 ~ 40%, 1/3 coking coal 15 ~ 25%, rich coal 15 ~ 20%, bottle coal 5 ~ 15%, lean coal 5 ~ 15%, there is the coking coal 5 ~ 15% of large inert component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076458.XA CN104593030B (en) | 2015-02-13 | 2015-02-13 | Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076458.XA CN104593030B (en) | 2015-02-13 | 2015-02-13 | Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104593030A true CN104593030A (en) | 2015-05-06 |
| CN104593030B CN104593030B (en) | 2017-04-12 |
Family
ID=53119102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510076458.XA Active CN104593030B (en) | 2015-02-13 | 2015-02-13 | Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104593030B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778962A (en) * | 2016-05-16 | 2016-07-20 | 武汉钢铁股份有限公司 | Coal blending and coking method for producing coke at high pulverized coal proportion |
| CN111253961A (en) * | 2020-01-21 | 2020-06-09 | 鞍钢股份有限公司 | Coking coal blending method for improving average particle size of coke and improving particle size distribution of coke |
| CN114088569A (en) * | 2021-11-22 | 2022-02-25 | 黑龙江建龙化工有限公司 | Separation method of non-molten coal material in coking coal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58180583A (en) * | 1982-04-16 | 1983-10-22 | Nippon Steel Chem Co Ltd | Controlling coal blending in the production of granulated coal-containing coke |
| CN1286722A (en) * | 1998-07-29 | 2001-03-07 | 川崎制铁株式会社 | Method for producing metallurgical coke |
| CN101429462A (en) * | 2008-11-20 | 2009-05-13 | 石家庄新世纪煤化实业集团有限公司 | Low-price high-quality caking coal |
| CN101705104A (en) * | 2009-11-12 | 2010-05-12 | 重庆汉砧科技有限公司 | Pulverized coal activator and coking coal prepared from same |
| CN101942315A (en) * | 2010-08-16 | 2011-01-12 | 中国神华能源股份有限公司 | High-proportion coal blending and coking method |
| CN102585868A (en) * | 2012-02-13 | 2012-07-18 | 山西太钢不锈钢股份有限公司 | Coking coal blending method |
| CN104293367A (en) * | 2014-09-27 | 2015-01-21 | 武钢集团昆明钢铁股份有限公司 | Coking method of modifying blended coal with non-coking coal |
-
2015
- 2015-02-13 CN CN201510076458.XA patent/CN104593030B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58180583A (en) * | 1982-04-16 | 1983-10-22 | Nippon Steel Chem Co Ltd | Controlling coal blending in the production of granulated coal-containing coke |
| CN1286722A (en) * | 1998-07-29 | 2001-03-07 | 川崎制铁株式会社 | Method for producing metallurgical coke |
| CN101429462A (en) * | 2008-11-20 | 2009-05-13 | 石家庄新世纪煤化实业集团有限公司 | Low-price high-quality caking coal |
| CN101705104A (en) * | 2009-11-12 | 2010-05-12 | 重庆汉砧科技有限公司 | Pulverized coal activator and coking coal prepared from same |
| CN101942315A (en) * | 2010-08-16 | 2011-01-12 | 中国神华能源股份有限公司 | High-proportion coal blending and coking method |
| CN102585868A (en) * | 2012-02-13 | 2012-07-18 | 山西太钢不锈钢股份有限公司 | Coking coal blending method |
| CN104293367A (en) * | 2014-09-27 | 2015-01-21 | 武钢集团昆明钢铁股份有限公司 | Coking method of modifying blended coal with non-coking coal |
Non-Patent Citations (2)
| Title |
|---|
| 杨洪海等: "应用焦粉配煤炼焦的实践", 《燃料与化工》 * |
| 王翠萍: "添加粘结剂配煤炼焦试验与可行性", 《洁净煤技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778962A (en) * | 2016-05-16 | 2016-07-20 | 武汉钢铁股份有限公司 | Coal blending and coking method for producing coke at high pulverized coal proportion |
| CN105778962B (en) * | 2016-05-16 | 2019-01-25 | 武汉钢铁有限公司 | The coal-blending coking method of coke is produced under high fine coal ratio |
| CN111253961A (en) * | 2020-01-21 | 2020-06-09 | 鞍钢股份有限公司 | Coking coal blending method for improving average particle size of coke and improving particle size distribution of coke |
| CN111253961B (en) * | 2020-01-21 | 2021-05-28 | 鞍钢股份有限公司 | Coking coal blending method for improving average particle size of coke and improving particle size distribution of coke |
| CN114088569A (en) * | 2021-11-22 | 2022-02-25 | 黑龙江建龙化工有限公司 | Separation method of non-molten coal material in coking coal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104593030B (en) | 2017-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104190950B (en) | A kind of PRODUCTION OF IRON POWDER technique | |
| CN103667675A (en) | Treatment method of laterite-nickel ore | |
| CN101928824B (en) | Sinter production method for reducing sintering solid burnup and enhancing intensity | |
| CN104404246B (en) | The method improving metallurgical slag pelletizing degree of metalization | |
| CN107460310A (en) | A kind of method for preparing sintering deposit | |
| CN103874745A (en) | Pelletization and calcination of green coke | |
| CN106636625B (en) | Using the method for rotary kiln for directly reducing RKEF combination methods production ferronickel | |
| CN104593030A (en) | Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces | |
| CN105039684B (en) | A kind of powdery semi-coke makees the application method of sintering fuel | |
| CN104862440A (en) | Low-grade iron ore direct reduction method | |
| CN105925257A (en) | Low-density ceramsite proppant and preparing method thereof | |
| CN102787234B (en) | High-ratio sintering method for limonite | |
| CN108070713A (en) | A kind of iron ore sintering method using calcined magnesite ball | |
| CN102181630A (en) | Method for using paigeite powder in sintering | |
| CN101289697B (en) | Blast furnace ironmaking raw material and method for preparing same | |
| CN102453824B (en) | Method for producing nickel-iron alloy by using laterite nickel mine | |
| CN104120207B (en) | One joins the raw ferriferous method in ore deposit with tin tail iron ore concentrate and the poor assorted ore deposit of high harmful element | |
| CN103468343A (en) | Sulfur-fixing agent for carbon-containing pellets and preparation method thereof | |
| CN102912209A (en) | Process for producing bead ferronickel by rotary hearth furnace through coal-based reduction of red soil nickel oxide ores | |
| CN107254563B (en) | The compound additive of high magnesium types lateritic nickel ore direct-reduction and its application in reinforcing | |
| CN105755280A (en) | Composite binder for iron ore pellet as well as preparation method and application method thereof | |
| CN102719677B (en) | Method for producing iron-copper alloy micropowder by treating copper smelting slag in oxidizing atmosphere kiln | |
| CN101747091A (en) | Method for preparing calcium magnesium phosphate fertilizer by using phosphorite floatation tailing as raw material | |
| CN206256124U (en) | A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence | |
| CN205291211U (en) | Anhydrous stemming collergang |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170728 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |