CN110484287A - A kind of method of coke making and coal blending - Google Patents

A kind of method of coke making and coal blending Download PDF

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Publication number
CN110484287A
CN110484287A CN201910784765.1A CN201910784765A CN110484287A CN 110484287 A CN110484287 A CN 110484287A CN 201910784765 A CN201910784765 A CN 201910784765A CN 110484287 A CN110484287 A CN 110484287A
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coal
mass
coking
pitch
follows
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CN110484287B (en
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孙占龙
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Shanxi Qinxin Energy Group Co Ltd
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Shanxi Qinxin Energy Group Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • 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

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  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)

Abstract

The present invention relates to coal blending fields, disclose a kind of method of coke making and coal blending, comprising: (1) measure the mean reflectance of vitrinite R of coking coal；And the bonding index G of the measurement coking coal；(2) coal blending is carried out according to the R and G matching corresponding scheme.The method of coke making and coal blending provided by the invention is able to produce out during blast furnace ironmaking actual condition with high response and high-intensitive coke.

Description

A kind of method of coke making and coal blending
Technical field
The present invention relates to coal blending fields, more particularly to a kind of method of coke making and coal blending.
Background technique
With the development of oxygen enriched blast coal injection and gas injection new process, the requirement of blast furnace STRENGTH ON COKE is increasingly stringenter.
Thermal Properties of Coke not only influences the problems such as blast furnace process gas permeability, but also also plays to iron quality vital Effect.The character variation in blast furnace of Thermal Properties of Coke and coke has close ties, be reflect coke in blast furnace situation it is important Index.
In existing coke quality appraisement system, CRI (heat reactivity) and CSR (post reaction strength) are the masters for judging coke Want index.Thus, in existing high grade coke production method, in order to realize that lower CRI index and higher CSR refer to Number, often pursues the raising of active component energetically, and thinks that coking coal supplying is more, and coke quality produced is better.Example Such as, in the prior art, it is the CSR value for enhancing coke, tends to promote coking coal, 1/3 coking coal and rich coal in coal blending process Amount of allocating.
However, in the actual production process, complicated operating condition causes coke CRI index and CSR index can not in blast furnace The effect of coke in actual production is objectively characterized completely, and simply promotes the supplying of coking coal, 1/3 coking coal and rich coal Amount, can not also be such that the effect of coke is in actual production effectively promoted.
Meanwhile in actual production, though coking coal main nature used by coking enterprise each batch coke is essentially identical, But still variant in properties such as R value, G values, these differences cause different batches coke to actually use process in blast furnace ironmaking Middle effect is simultaneously unstable.
Therefore, how to find suitable Coal Blending Schemes to overcome aforementioned drawback is this field urgent problem to be solved.
Summary of the invention
The purpose of the invention is to provide one kind to carry out coking proportion adjustment according to coking coal speciality itself, thus Ensure each batch coke intensity after blast furnace ironmaking steadily has good heat reactivity and burning in actual use.
To achieve the goals above, the present invention provides a kind of methods of coke making and coal blending, this method comprises:
(1) the mean reflectance of vitrinite R of coking coal is measured；And the bonding index G of the measurement coking coal；
(2) coal blending is carried out according to the R and G matching following scheme:
Scheme a, 0.9%≤R≤1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the master of 50-65 mass % Coking coal, the bottle coal of 25-30 mass %, 5-25 mass % pitch；
Scheme b, 0.9%≤R≤1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal of 50-65 mass %, The bottle coal of 10-25 mass %, the lean coal of 5-25 mass %, 3-5 mass % pitch；
Scheme c, R >=1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the coking coal, the 10- of 65-80 mass % The pitch of the bottle coal of 15 mass %, 5-25 mass %；
Scheme d, R >=1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal of 65-80 mass %, 15-32 matter Measure the bottle coal of %, the pitch of 3-5 mass %.
The method of coke making and coal blending provided by the invention is able to produce out in blast furnace ironmaking actual condition with high-intensitive, low The coke of reactive feature.That is, the method for coke making and coal blending provided by the invention is able to produce out in the practical coking of blast furnace With the coke of high post reaction strength in journey, to ensure height of the coke as blast furnace ironmaking main energetic stream and material stream carrier Effect property.
Mean reflectance of vitrinite of the present invention indicates: under microscope oil immersion objective, the reflection of vitrinite burnishing surface Light (A-546nm) intensity is to the ratio between its vertical incidence luminous intensity.Vitrinite is a kind of maceral, mainly by aromatic condensed ring chemical combination Object composition, with the increase of degree of coalification, the condensation level of aromatic structure is also increased, this reflectivity for allowing for vitrinite increases Greatly.
Bonding index of the present invention is an index for evaluating the plasticity of coal, is indicated: coal is burnt into after coke can be at For the ability of bulk coke, G value is generally.And G=10+ { (30*M1+70*M2)/M }, wherein M1 is first time drum test Afterwards, part mass on sieve；M2 is part mass on sieve after second of drum test；M is slag total weight after coking.
CSR value of the present invention indicates: coke keeps the ability of elevated temperature strength, detection side under the atmosphere such as carbon dioxide Method is related to coke and reacts with carbon dioxide, then coke weight-loss ratio after measurement reaction.And CSR=m2/m1× 100%, formula In, m2To be greater than 10mm grade coke quality (g), m after rotary drum1For residual coke quality (g) after reaction.
Method of the invention requires 0.9%≤R and 70≤G value of the coking coal, is then otherwise unqualified coal, abandons making Coal blending is carried out with the underproof coal.
Under preferable case, in the scheme a, Coal Blending Schemes are as follows: the coking coal of 55-65 mass %, 25-30 matter Measure the bottle coal of %, the pitch of 8-20 mass %；It is highly preferred that in the scheme a, Coal Blending Schemes are as follows: the institute of 58-65 mass % State the pitch of coking coal, the bottle coal of 26-30 mass %, 9-12 mass %.
Under preferable case, in the scheme b, Coal Blending Schemes are as follows: the coking coal of 52-62 mass %, 12-22 matter Measure the pitch of the bottle coal of %, the lean coal of 11-22 mass %, 3-5 mass %；It is highly preferred that in the scheme b, Coal Blending Schemes Are as follows: the coking coal of 55-60 mass %, the bottle coal of 15-20 mass %, 15-20 mass % lean coal, 3-5 mass % drip It is green.
Under preferable case, in the scheme c, Coal Blending Schemes are as follows: the coking coal of 68-78 mass %, 10-15 matter Measure the bottle coal of %, the pitch of 8-20 mass %；It is highly preferred that in the scheme c, Coal Blending Schemes are as follows: the institute of 70-75 mass % State the pitch of coking coal, the bottle coal of 10-15 mass %, 10-16 mass %.
Under preferable case, in the scheme d, Coal Blending Schemes are as follows: the coking coal of 68-78 mass %, 18-28 matter Measure the bottle coal of %, the pitch of 3-5 mass %；It is highly preferred that in the scheme d, Coal Blending Schemes are as follows: the institute of 72-75 mass % State the pitch of coking coal, the bottle coal of 20-25 mass %, 3-5 mass %.
Several preferred embodiments presented below illustrate Coal Blending Schemes of the invention.
Specific embodiment 1:
Scheme a, 0.9%≤R≤1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the master of 52-62 mass % Coking coal, the bottle coal of 25-30 mass %, 8-20 mass % pitch；
Scheme b, 0.9%≤R≤1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal of 52-62 mass %, The bottle coal of 12-22 mass %, the lean coal of 11-22 mass %, 3-5 mass % pitch；
Scheme c, R >=1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the coking coal, the 10- of 68-78 mass % The pitch of the bottle coal of 15 mass %, 8-20 mass %；
Scheme d, R >=1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal of 68-78 mass %, 18-28 matter Measure the bottle coal of %, the pitch of 3-5 mass %.
Specific embodiment 2:
Scheme a, 0.9%≤R≤1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the master of 54-58 mass % Coking coal, the bottle coal of 25-30 mass %, 12-17 mass % pitch；
Scheme b, 0.9%≤R≤1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal of 55-60 mass %, The bottle coal of 15-20 mass %, the lean coal of 15-20 mass %, 3-5 mass % pitch；
Scheme c, R >=1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the coking coal, the 10- of 70-75 mass % The pitch of the bottle coal of 15 mass %, 12-18 mass %；
Scheme d, R >=1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal of 72-75 mass %, 20-25 matter Measure the bottle coal of %, the pitch of 3-5 mass %.
The present inventor has found after passing through a large amount of creative research, special using aforementioned two kinds of specific embodiments It is not that when carrying out the method for coke making and coal blending of the invention by the way of specific embodiment 2, can be given birth to by method of the invention Output coke with considerably higher intensity in ironmaking actual condition.
Under preferable case, the dry ash free basis volatile matter V of lean coal of the present inventiondafContent be 15-18 mass %；It is glutinous Tie index GK.LFor 35-40；Maximum thick ness of plastic layer Y value is 7.5-8.5mm；OTI value after the more preferable independent coking of lean coal For 95-110.
Under preferable case, the dry basis ash content Ad of bottle coal of the present invention is 7.01-10.00 mass %；Dry ash free basis is waved Hair divides VdafContent be 30-37 mass %；Caking index GK.LFor 30-40；Maximum thick ness of plastic layer Y value is 25-30mm；It is more excellent The carbon content for selecting the bottle coal is 80-85 mass %, and oxygen content is lower than 10 mass %, and hydrogen content is more than or equal to 5 mass %.
Under preferable case, pitch of the present invention is selected from coal tar mid temperature pitch, coal tar hard pitch, coal tar modification At least one of pitch, modified pitch, modified emulsifying asphalt.
It is highly preferred that the pitch is modified emulsifying asphalt.
It is particularly preferred that the modified emulsifying asphalt is polymer modification cationic emulsified asphalt.The modified emulsifying Pitch is for example are as follows: matrix pitch is modified through SBS or SBR, achievees the effect that improve cohesive force, then with amide, alkylamine or amination The modified emulsifying asphalt that lignin is obtained as emulsifier.The coke of incorporating modified emulsified asphalt, can be realized standard law Survey the effect that response intensity improves under CSR and actual condition.
According to a kind of preferred embodiment, the softening point (ring and ball method) of the pitch is 90~220 DEG C；Needle penetration (25 DEG C, 100g, 5s) are 8.5~12mm；(25 DEG C, 5cm/min) of ductility are 75~95cm；Flash-point ≮ 200 DEG C.
Preferably, the sulfur content of coking coal of the present invention is less than 0.5 mass %；Dry ash free basis volatile matter VdafContain Amount is 15-25 mass %；Caking index GK.LFor 70-75；Maximum thick ness of plastic layer Y value is 15-20mm.
The present invention does not require the method for obtaining the mean reflectance of vitrinite R particularly, those skilled in the art It can be obtained using conventional method in the art, for example, fine coal mating plate is prepared, in mating plate after taking the polishing of coal petrography sample dry Oil immersion liquid is instilled on burnishing surface, and mating plate is placed in under the inclined reflection macroscope macroscope of photometric binocular lens tube, it is vertical using Smith The polarizer is placed on 0 ° of position by luminaire, adjusts knot photomultiplier tube that resolution ratio is made to be equal to or less than 0.01% reflectivity condition Under detected.
Similarly, the present invention does not require the method for the bonding index G for measuring the coking coal particularly, this field skill Art personnel can be obtained using conventional method in the art, for example, being referred to according to the method for standard GB5447-85 measurement bonding Number, the test coal sample of certain mass and dedicated anthracite mix under the defined conditions, quickly heat coking, gained coke button Ruggedness test is carried out in rotary drum, to detect the wear-resistant strength of coke button, i.e. the size of confrontation destructive power indicates the viscous of test coal sample Knot ability.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In following instance, in case of no particular description, the various raw materials used are all from commercially available.
The test method of mean reflectance of vitrinite R in following instance is as follows:
1. instrument: HD type microphotometer；
FIRM400 type metallic phase sample inlaying machine and inlay；
2. sample preparation: after taking the polishing of coal petrography sample dry, being crushed, division, all pass through 1mm square hole screen, small and 0.1mm granularity No more than 10%, division goes out 20g sample, is mixed, is stirred evenly with mass ratio 2:1 ratio with powder is inlayed, and is packed into edge in pointing machine After embedding, cooling, grinding, polishing, fine coal mating plate is made.
3. detection: mating plate being placed in HD type microphotometer, using Smith's vertical illuminator, the polarizer is placed on 0 ° Position is detected under the conditions of adjusting knot photomultiplier tube that resolution ratio is made to be equal to or less than 0.01% reflectivity.
And the test method of the bonding index G in following instance is as follows:
1. detecting instrument: the intelligent Muffle furnace of FR1236
KER-NJA type caking index analyzer
2. sample preparation: being taken out after samples of coal pulled 1kg, 105~110 DEG C of drying 2h of drying box, sieved, be greater than with 3mm sieve 3mm coal sample continues broken until all by 3mm sieve, the coal sample after weighing 500g screening crosses 1.5mm sieve, is greater than 1.5mm coal Sample continues broken until all by 1.5mm sieve, weighing 200g and being sieved with 0.2mm (80 mesh) sieve, coal sample continues to be put on sieve Screening is taken out after grinding 30s in sealed grinder, until all by 0.2mm (80 mesh) sieve, by the coal after whole be sieved Sample is mixed.
3. detection: weighing the coal sample that 50g makes, be placed in crucible, after stirring, briquetting static pressure, covered crucible lid is put into pre- It in heat to 850 DEG C of Muffle furnace, after constant temperature coking 15min, takes out, room temperature is cooling, weighs slag total weight M after coking, then stands It carves and carries out first time drum test, test duration 5min i.e. 250 turn, 1mm round-hole mesh is sieved on the coke button after test, is weighed Oversize matter mass M 1 carries out second of drum test followed by rotary drum is put it into, repeats screening, weighs operation, obtain the Oversize matter mass M 2 after secondary rotary drum.
4. calculating G value.
In following instance, the bottle coal used is from city, Shenmu County Jin Nuoyuan coal transportation and sales Co., Ltd, dry basis ash content Ad is 8.59 mass %；Dry ash free basis volatile matter VdafContent be 33 mass %；Caking index GK.LIt is 37；Gelatinous layer is maximum Thickness Y value is 26mm；Carbon content is 82.03 mass %, and oxygen content is 6.15 mass %, and hydrogen content is 8.62 mass %.
In following instance, the lean coal used from city, Shenmu County Jin Nuoyuan coal transportation and sales Co., Ltd, do by the lean coal Dry ash free basis volatile matter VdafContent be 17 mass %；Caking index GK.LIt is 38；Maximum thick ness of plastic layer Y value is 8.1mm；Institute OTI value after stating the independent coking of lean coal is 104.
In following instance, the pitch used is the modified coal tar pitch from SUMITOMO CHEMICAL company, and softening point (ring and ball method) is 106℃；(25 DEG C, 100g, 5s) of needle penetration are 10mm；(25 DEG C, 5cm/min) of ductility are 80cm；210 DEG C of flash-point.
CSR in following instance, after coal coking1Test obtains value with the following method:
Taking 200g granularity is the burnt sample after 21~25mm dry, is warming up to 400 DEG C with 20~25 DEG C/min speed, is passed through nitrogen Gas shielded is continuously heating to 1100 DEG C, switches to carbon dioxide gas, flow 0.5L/min, reaction time 120min；So Lead to nitrogen protection afterwards to be cooled to room temperature；Coke after reaction diameter 130mm, long 700mm I type rotary drum in 20r/min speed 600 turns of degree rotation, is then sieved with 10mm sieve, and measurement oversize accounts for the percentage conduct of amount of coke after the reaction for being packed into rotary drum Post reaction strength index (CSR).
CSR in following instance, after coal coking2Value is detected under the blast furnace actual condition using big coal injection technology and is obtained , after blast furnace is warming up to 1100 DEG C and reacts 120min, coke sample after taking 200g to react, in diameter 130mm, long 700mm I type rotary drum in 20r/min speed rotate 600 turns, then with 10mm sieve sieve, measurement oversize account for be packed into rotary drum it is anti- The percentage of amount of coke is as post reaction strength index (CSR) after answering.
In following instance, the deviation ratio=(CSR after coal coking1CSR after value-coal coking2Value) CSR after/coal coking2 Value × 100%.
Embodiment 1
Coking coal derives from Linfen, Shanxi Anze coal mine, and sulfur content is 0.3 mass %, VdafFor 21 mass %, GK.LFor 70, Y value 17mm.
It is 79 that the R for measuring the coking coal, which is 1.05%, G value,.Accordingly, the Coal Blending Schemes of use are as follows: 62 mass % of coking coal, 28 mass % of bottle coal, 10 mass % of pitch.
Coal coking method: the material after coal blending is sent into tamping tool and is made firm by ramming, is sent into coke oven, later with the heating of 3 DEG C/min Rate is heated to 950 DEG C, constant temperature destructive distillation 3h, obtains coke.
CSR after the coal coking of above-mentioned Coal Blending Schemes1It is 73.4%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2Value It is 71.4%, that is, deviation ratio 2.80%.
Embodiment 2
Coking coal derives from Shanxi Qin Xin group No.1 coal mine, and sulfur content is 0.2 mass %, VdafFor 17 mass %, GK.LIt is 72, Y value 19mm.
It is 87 that the R for measuring the coking coal, which is 1.12%, G value,.Accordingly, the Coal Blending Schemes of use are as follows: 58 mass % of coking coal, 17 mass % of bottle coal, 20 mass % of lean coal, 5 mass % of pitch.
Coal coking method: the material after coal blending is sent into tamping tool and is made firm by ramming, is sent into coke oven, later with the heating of 3 DEG C/min Rate is heated to 950 DEG C, constant temperature destructive distillation 3h, obtains coke.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 73.8%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 72.0%, that is, deviation ratio 2.22%.
Embodiment 3
Coking coal derives from No. two coal mines of Shanxi Qin Xin group, and sulfur content is 0.4 mass %, VdafFor 19 mass %, GK.LIt is 75, Y value 20mm.
It is 75 that the R for measuring the coking coal, which is 1.25%, G value,.Accordingly, the Coal Blending Schemes of use are as follows: 75 mass % of coking coal, 15 mass % of bottle coal, 10 mass % of pitch.
Coal coking method: the material after coal blending is sent into tamping tool and is made firm by ramming, is sent into coke oven, later with the heating of 3 DEG C/min Rate is heated to 950 DEG C, constant temperature destructive distillation 3h, obtains coke.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 74.5%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 72.3%, that is, deviation ratio 3.04%.
Embodiment 4
For coking coal from logical remote horizontal coal transportation and sales company, city, Shenmu County, sulfur content is 0.4 mass %, VdafFor 22 matter Measure %, GK.LIt is 71, Y value 15mm.
It is 90 that the R for measuring the coking coal, which is 1.31%, G value,.Accordingly, the Coal Blending Schemes of use are as follows: 73 mass % of coking coal, 22 mass % of bottle coal, 5 mass % of pitch.
Coal coking method: the material after coal blending is sent into tamping tool and is made firm by ramming, is sent into coke oven, later with the heating of 3 DEG C/min Rate is heated to 950 DEG C, constant temperature destructive distillation 3h, obtains coke.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 73.6%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 71.8%, that is, deviation ratio 2.51%.
Embodiment 5
The present embodiment uses coking coal same as Example 1.
Also, the Coal Blending Schemes that the present embodiment uses are as follows: 56 mass % of coking coal, 25 mass % of bottle coal, 19 matter of pitch Measure %.
Coking is carried out using method same as Example 1.
CSR after the coal coking of above-mentioned Coal Blending Schemes1It is 73.2%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2Value It is 66.8%, that is, deviation ratio 9.58%.
Embodiment 6
The present embodiment uses coking coal same as Example 2.
Also, the Coal Blending Schemes that the present embodiment uses are as follows: 53 mass % of coking coal, 20 mass % of bottle coal, 22 matter of lean coal Measure %, 5 mass % of pitch.
Coking is carried out using method same as Example 2.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 73.5%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 66.5%, that is, deviation ratio 10.53%.
Embodiment 7
The present embodiment uses coking coal same as Example 3.
Also, the Coal Blending Schemes that the present embodiment uses are as follows: 68 mass % of coking coal, 15 mass % of bottle coal, 17 matter of pitch Measure %.
Coking is carried out using method same as Example 3.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 74.2%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 67.0%, that is, deviation ratio 10.75%.
Embodiment 8
The present embodiment uses coking coal same as Example 4.
Also, the Coal Blending Schemes that the present embodiment uses are as follows: 70 mass % of coking coal, 26 mass % of bottle coal, 4 matter of pitch Measure %.
Coking is carried out using method same as Example 4.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 73.3%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 66.1%, that is, deviation ratio 10.89%.
Comparative example 1
It is directly refined without coal blending using method same as Example 1 using coking coal same as Example 1 It is burnt.
CSR after the coking coal coking1Value is 79.0%；By the CSR after the coking coal coking2Value is 63.8%, i.e. deviation Rate is 23.82%.
Comparative example 2
Using coking coal same as Example 1.
Also, the Coal Blending Schemes used are as follows: 67 mass % of coking coal, 30 mass % of bottle coal, 3 mass % of pitch.
Coking is carried out using method same as Example 1.
CSR after the coal coking of above-mentioned Coal Blending Schemes1It is 71.3%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2Value It is 57.2%, that is, deviation ratio 24.65%.
Comparative example 3
Using coking coal same as Example 2.
Also, the Coal Blending Schemes used are as follows: 68 mass % of coking coal, 17 mass % of bottle coal, 10 mass % of lean coal, pitch 5 Quality %.
Coking is carried out using method same as Example 2.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 71.2%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 57.4%, that is, deviation ratio 20.04%.
Comparative example 4
Using coking coal same as Example 3.
Also, the Coal Blending Schemes used are as follows: 62 mass % of coking coal, 20 mass % of bottle coal, 18 mass % of pitch.
Coking is carried out using method same as Example 3.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 73.5%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 59.6%, that is, deviation ratio 23.32%.
Comparative example 5
Using coking coal same as Example 4.
Also, the Coal Blending Schemes used are as follows: 82 mass % of coking coal, 15 mass % of bottle coal, 3 mass % of pitch.
Coking is carried out using method same as Example 4.
CSR after the coal coking of above-mentioned Coal Blending Schemes1Value is 71.8%；By the CSR after the coal coking of above-mentioned Coal Blending Schemes2 Value is 57.0%, that is, deviation ratio 25.96%.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to Protection scope of the present invention.

Claims (9)

1. a kind of method of coke making and coal blending, which is characterized in that this method comprises:
(1) the mean reflectance of vitrinite R of coking coal is measured；And the bonding index G of the measurement coking coal；
(2) coal blending is carried out according to the R and G matching following scheme:
Scheme a, 0.9%≤R≤1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the coking coal of 50-65 mass %, The pitch of the bottle coal of 25-30 mass %, 5-25 mass %；
Scheme b, 0.9%≤R≤1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal, the 10- of 50-65 mass % The bottle coal of 25 mass %, the lean coal of 5-25 mass %, 3-5 mass % pitch；
Scheme c, R >=1.2%, when and 70≤G value≤85, Coal Blending Schemes are as follows: the coking coal of 65-80 mass %, 10-15 matter Measure the bottle coal of %, the pitch of 5-25 mass %；
Scheme d, R >=1.2%, and when G value > 85, Coal Blending Schemes are as follows: the coking coal, the 15-32 mass % of 65-80 mass % Bottle coal, 3-5 mass % pitch.
2. according to the method described in claim 1, wherein, in the scheme a, Coal Blending Schemes are as follows: 55-65 mass %'s is described Coking coal, the bottle coal of 25-30 mass %, 8-20 mass % pitch；
Preferably, in the scheme a, Coal Blending Schemes are as follows: the gas of the coking coal of 58-65 mass %, 26-30 mass % The pitch of coal, 9-12 mass %.
3. according to the method described in claim 1, wherein, in the scheme b, Coal Blending Schemes are as follows: 52-62 mass %'s is described Coking coal, the bottle coal of 12-22 mass %, the lean coal of 11-22 mass %, 3-5 mass % pitch；
Preferably, in the scheme b, Coal Blending Schemes are as follows: the gas of the coking coal of 55-60 mass %, 15-20 mass % Coal, the lean coal of 15-20 mass %, 3-5 mass % pitch.
4. according to the method described in claim 1, wherein, in the scheme c, Coal Blending Schemes are as follows: 68-78 mass %'s is described Coking coal, the bottle coal of 10-15 mass %, 8-20 mass % pitch；
Preferably, in the scheme c, Coal Blending Schemes are as follows: the gas of the coking coal of 70-75 mass %, 10-15 mass % The pitch of coal, 10-16 mass %.
5. according to the method described in claim 1, wherein, in the scheme d, Coal Blending Schemes are as follows: 68-78 mass %'s is described Coking coal, the bottle coal of 18-28 mass %, 3-5 mass % pitch；
Preferably, in the scheme d, Coal Blending Schemes are as follows: the gas of the coking coal of 72-75 mass %, 20-25 mass % The pitch of coal, 3-5 mass %.
6. method described in any one of -5 according to claim 1, wherein the dry ash free basis volatile matter V of the lean coaldaf Content be 15-18 mass %；Caking index GK.LFor 35-40；Maximum thick ness of plastic layer Y value is 7.5-8.5mm；
Preferably, the OTI value after the independent coking of the lean coal is 95-110.
7. method described in any one of -5 according to claim 1, wherein the dry basis ash content Ad of the bottle coal is 7.01- 10.00 quality %；Dry ash free basis volatile matter VdafContent be 30-37 mass %；Caking index GK.LFor 30-40；Gelatinous layer Maximum gauge Y value is 25-30mm.
8. method described in any one of -5 according to claim 1, wherein the pitch is selected from coal tar mid temperature pitch, coal At least one of tar hard pitch, coal tar modified coal tar pitch, modified pitch, modified emulsifying asphalt；Preferably, the pitch For modified emulsifying asphalt；Preferably, the modified emulsifying asphalt is polymer modification cationic emulsified asphalt；
Preferably, the softening point of the pitch is 90~220 DEG C, and needle penetration is 8.5~12mm；Ductility is 75~95cm；Flash-point ≮200℃。
9. method described in any one of -5 according to claim 1, wherein the sulfur content of the coking coal is less than 0.5 matter Measure %；Dry ash free basis volatile matter VdafContent be 15-25 mass %；Caking index GK.LFor 70-75；Maximum thick ness of plastic layer Y value is 15-20mm.
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