CN104293367A - Coking method of modifying blended coal with non-coking coal - Google Patents
Coking method of modifying blended coal with non-coking coal Download PDFInfo
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- 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
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Abstract
The invention discloses a coking method of modifying blended coal with non-coking coal. The method comprises the following steps: respectively weighing Yipinglang coal, mixed prime coking coal, mixed 1/3 coke and Panjiang coal, which respectively account for 5-10%, 29-55%, 5-40% and 15-20% of the total mass of the raw material, as raw material coking coal; respectively weighing blind coal and lean coal, which respectively account for 4-6% and 5-7% of the total mass of the raw material, as raw material non-coking coal; respectively crushing the raw material coking coal and raw material non-coking coal, and evenly mixing; weighing a modifier which accounts for 0.08-0.12% of the total mass of the raw material, evenly mixing with the raw material non-coking coal for modification, and evenly mixing the modified raw material non-coking coal with the raw material coking coal to obtain compound coal; and charging the compound coal into a coke oven, and carbonizing to obtain the coke. Compared with the existing production indexes, the volatile content of the compound coal is lowered by -0.01-2.51%, the coke strength index M40 is improved by 1.40-3.00%, M10 is improved by 0.50-1.90%, CRI is improved by -0.10-2.50%, and CSR is improved by -0.71-3.23%.
Description
Technical field
The invention belongs to coking technology field, be specifically related to a kind of method of non-coking coal modification coal-blending coking.
Background technology
In recent years, the expansion that the sustainable development of Chinese national economy has effectively pulled coking to produce, cause increasingly reducing and contradiction between the more and more higher requirement of blast furnace Coke Quality of high-quality caking coal resource, how Appropriate application coal resource meets coking production demand, and the substitute expanding coking coal source becomes practical problems urgently to be resolved hurrily at present.Some non-coking coal as hard coal, meager coal not only resource relative abundance and also price cheaper, the method of a set of modification coal-blending coking is researched and developed according to its character feature, optimizing materials composition and compounding process, non-coking coal resource is applied in coking production, the weave construction of coke and every physico-mechanical properties can not only be improved, more be conducive to expanding coking coal source, reduce coal blending cost, to enterprise's cost efficiency, there is very important reality and long-range meaning.
Summary of the invention
The object of the present invention is to provide a kind of method of non-coking coal modification coal-blending coking.
The object of the present invention is achieved like this, the method for described non-coking coal modification coal-blending coking, comprise get the raw materials ready, coal blending and coking process, specifically comprise:
A, to get the raw materials ready: take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 5 ~ 10%, 29 ~ 55%, 5 ~ 40% and 15 ~ 20% of raw material total mass ratio; Hard coal, meager coal is taken respectively as raw material non-coking coal by 4 ~ 6%, 5 ~ 7% of raw material total mass ratio; Raw material coking coal, raw material non-coking coal are carried out fragmentation respectively, mix for subsequent use.
B, coal blending: take properties-correcting agent by 0.08 ~ 0.12% of raw material total mass ratio, to be sprinkling upon properties-correcting agent uniform spreading on raw material non-coking coal and to mix modification, modified raw material non-coking coal and raw material coking coal are mixed to obtain mixed coal.
C, coking: the mixed coal of mixing is loaded destructive distillation in pit kiln and obtain target compound coke.
The method of the invention has following beneficial effect:
1, the modification of appropriateness makes the degree of graphitization of hard coal and meager coal reduce, the small volume amount of crystals making fragrant lamellar spacing that the two contains bigger than normal increases, the active site that increase can be combined with hydrogen, is conducive to coking and produces more small molecules liquid state and gaseous substance.
2, through the modification of appropriateness, hard coal and meager coal can produce a certain amount of plastic mass in coking, solve that non-coking coal shrinks in process of coking, the problem of coking property difference, expand coking coal source, reduce coking production cost.
3, by adopting multistage mixture and loading process, optimizing mixture and charging technique, can obtain the mixed coal that quality is homogeneous, selected charging system is conducive to more even, stable the carrying out of coking reaction, improves coke quality and production security.
4, the mixed coal adopting the method for the invention to prepare, coke index are compared with active service industrial production index, and the volatile content of mixed coal have dropped-0.01 ~ 2.51%, the intensity index M of coke
40improve 1.40 ~ 3.00%, M
10improve 0.50 ~ 1.90%, CRI to improve-0.10 ~ 2.50%, CSR and improve-0.71 ~ 3.23%.
5, operation is simple for the method for the invention, and technique interchangeability is strong, and equipment interoperability is good, has good popularizing application prospect.
Embodiment
The present invention is further illustrated below, but limited the present invention never in any form, and any conversion done based on training centre of the present invention or replacement, all belong to protection scope of the present invention.
The method of non-coking coal modification coal-blending coking of the present invention, comprise get the raw materials ready, coal blending and coking process, specifically comprise:
Described procedure for preparation refers to and takes a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 5 ~ 10%, 29 ~ 55%, 5 ~ 40% and 15 ~ 20% of raw material total mass ratio; Hard coal, meager coal is taken respectively as raw material non-coking coal by 4 ~ 6%, 5 ~ 7% of raw material total mass ratio; Raw material coking coal, raw material non-coking coal are carried out fragmentation respectively, mix for subsequent use.
Described coal blending operation refers to and takes properties-correcting agent by 0.08 ~ 0.12% of raw material total mass ratio, to be sprinkling upon by properties-correcting agent uniform spreading on raw material non-coking coal and to mix modification, modified raw material non-coking coal and raw material coking coal are mixed to obtain mixed coal.
Described coking process refers to and destructive distillation in the mixed coal of mixing loading pit kiln is obtained target compound coke.
Use in described procedure for preparation one flat unrestrained coal refers to V
daf-26.50%, G value-92, Y value-17.0mm; Mixed coking coal refers to V
daf-24.30%, G value-82, Y value-14.0mm; Mixed 1/3 coking coal refers to V
daf-33.05%, G value-84, Y value-16.0mm; Dish river coal refers to V
daf-33.80%, G value-85, Y value-22.0mm.
Described procedure for preparation preferably takes a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal as raw material coking coal respectively by 5 ~ 10%, 29 ~ 55%, 5 ~ 40% and 15 ~ 20% of raw material total mass ratio; Hard coal, meager coal is taken respectively as raw material non-coking coal by 5%, 6% of raw material total mass ratio; Raw material coking coal, raw material non-coking coal are carried out fragmentation respectively, mix for subsequent use.
The particle size after cracking of described procedure for preparation Raw coking coal is that < 3mm accounts for 74 ~ 80%.
The particle size after cracking of described procedure for preparation Raw non-coking coal is that < 3mm accounts for 100%.
Described coal blending operation preferably takes properties-correcting agent by 0.10% of raw material total mass ratio, to be sprinkling upon by properties-correcting agent uniform spreading on raw material non-coking coal and to mix modification, modified raw material non-coking coal and raw material coking coal are mixed to obtain mixed coal.
The properties-correcting agent used in described coal blending operation is any one or several in ZZZ-MF01, ZZZ-MF02, ZZZ-MF03 or ZZZ-MF04.
Composition and the quality proportioning of ZZZ-MF01 are: ABY-3.0%, APS-5.0%, OXP-10.0%, PPOI-35.0%, TWWJ-9.8%, XJGA-8.0%, OJYX-9.0%, OJBX-10.0%, RTB-0.2%, EOR-10.0%;
Composition and the quality proportioning of ZZZ-MF02 are: ABY-5%, APS-8%, OXP-12%, PPOI-40%, TWWJ-5%, XJGA-3%, OJYX-4%, OJBX-12%, RTB-1.5%, EOR-9.5%;
The composition of ZZZ-MF03 and quality proportioning are ABY-10.0%, APS-2.0%, OXP-15.0%, PPOI-45.0%, TWWJ-2.0%, XJGA-1.0%, OJYX-6.0%, OJBX-9.0%, RTB-2.5%, EOR-7.5%;
Composition and the quality proportioning of ZZZ-MF04 are: ABY-2.0%, APS-15.0%, OXP-7.0%, PPOI-38.0%, TWWJ-2.0%, XJGA-13.0%, OJYX-3.0%, OJBX-4.0%, RTB-1.0%, EOR-15.0%.
Being sprinkling upon by properties-correcting agent uniform spreading in described coal blending operation on raw material non-coking coal and mixing modification, the modification temperature adopted is 15 ~ 30 DEG C, and modification time is 30 ~ 90min.
In described coal blending operation, modified raw material non-coking coal and raw material coking coal are mixed mixed coal refers to, raw material coking coal broken, mixing in operation A is evenly divided into >=10 heaps, then the raw material non-coking coal having mixed modification in process B is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump, after manually every a pile mixed coal being mixed, then carry out the physics mixing of 2 ~ 4 times with shovel loader.
In described coal blending operation, modified raw material non-coking coal and raw material coking coal are mixed to obtain mixed coal, preferably raw material coking coal broken, mixing in operation A is evenly divided into 50 heaps, then the raw material non-coking coal having mixed modification in process B is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump, after manually every a pile mixed coal being mixed, then carry out the physics mixing of 2 ~ 4 times with shovel loader.
Refer to and by artificial hoe or spades, 180o is successively carried out separately to every a pile mixed coal with manually carrying out mixing to every a pile mixed coal and overturn mixing in described coal blending operation, and bottom need ensureing, coal charge is really reversed.
In described coking process, the mixed coal of mixing is loaded pit kiln to refer to, the mixed coal loading mechanical shovel of mixing to be entered in material loading suspension bucket in bucket, coal fills, winch to crane again on the coal charger of pit kiln furnace roof side, mixed coal is discharged in larry bin, and the weight of record bucket, until mixed coal all loads larry bin, complete material loading.For making mixed coal mix further, the order of coalingging of coal charger is coaling to three coal bunkers are filled successively by pusher side coal bunker, middle part coal bunker, coke side coal bunker, and by the total coal loading weight of crane record.
The pyrolysis temperature adopted in described coking process is 1200 ~ 1330 DEG C, and retorting time is 22 ~ 60h.
The volatile content of mixed coal and the intensity index M of coke is detected respectively according to GB/T212-2008, GB/T2006-2008, GB/T4000-1996 after described coal blending and coking process complete
40, M
10, CRI, CSR.
embodiment 1
First take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 5%, 29%, 40% and 15% of raw material total mass ratio, amount to 17.80t; Take hard coal, meager coal respectively as raw material non-coking coal by 5%, 6% of raw material total mass ratio, amount to 2.00t.Raw material coking coal is broken into the powder of granularity < 3mm and mixes, wherein the powder of granularity < 3mm accounts for the ratio of raw material coking coal powder total amount is 78.5%; Again raw material non-coking coal be broken into the powder of granularity < 3mm and mix, requiring that the ratio that the powder of granularity < 3mm accounts for raw material non-coking coal powder total amount is 100%.
Then take the properties-correcting agent ZZZ-MF01 of 19.8kg by 0.10% of raw material total mass ratio, properties-correcting agent uniform spreading to be sprinkling upon on raw material non-coking coal and to mix, modification 30min at 25 DEG C.Then raw material coking coal broken, mixing in a upper operation is evenly divided into 50 heaps, then the raw material non-coking coal mixing modification is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump.By artificial hoe or spades, 180o is successively carried out separately to every a pile mixed coal and overturn mixing, and ensure that bottom coal charge is really reversed, then carry out the physics mixing of 2 times with shovel loader.
Finally the mixed coal loading mechanical shovel of mixing to be entered in material loading suspension bucket in bucket, coal fills, winch to crane on the coal charger of pit kiln furnace roof side again, mixed coal is discharged in larry bin, and the weight of record bucket, until mixed coal all loads larry bin, complete material loading.For making mixed coal mix further, the order of coalingging of coal charger is coaling to three coal bunkers are filled successively by pusher side coal bunker, middle part coal bunker, coke side coal bunker, and by the total coal loading weight of crane record.After the mixed coal loading pit kiln of mixing, at 1200 ~ 1210 DEG C, destructive distillation 50h obtains target compound coke.
The volatile content of mixed coal and the intensity index M of coke is detected respectively according to GB/T212-2008, GB/T2006-2008, GB/T4000-1996 after above-mentioned coal blending and coking process complete
40, M
10, CRI, CSR.Result is as follows: the mixed coal adopting the method for the invention to prepare, coke index are compared with active service industrial production index, and the volatile content of mixed coal is 26.92%, and index increases 0.01%, the intensity index M of coke
40be 79.80%, improve 1.40%, M
10be 5.50%, improving 1.90%, CRI is 28.50%, and improving 2.50%, CSR is 62.94%, improves 3.23%.
embodiment 2
First take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 10%, 40%, 19% and 20% of raw material total mass ratio, amount to 17.80t; Take hard coal, meager coal respectively as raw material non-coking coal by 5%, 6% of raw material total mass ratio, amount to 2.00t.Raw material coking coal is broken into the powder of granularity < 3mm and mixes, wherein the powder of granularity < 3mm accounts for the ratio of raw material coking coal powder total amount is 79.3%; Again raw material non-coking coal be broken into the powder of granularity < 3mm and mix, requiring that the ratio that the powder of granularity < 3mm accounts for raw material non-coking coal powder total amount is 100%.
Then take the properties-correcting agent ZZZ-MF02 of 19.8kg by 0.10% of raw material total mass ratio, properties-correcting agent uniform spreading to be sprinkling upon on raw material non-coking coal and to mix, modification 50min at 15 DEG C.Then raw material coking coal broken, mixing in a upper operation is evenly divided into 50 heaps, then the raw material non-coking coal mixing modification is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump.By artificial hoe or spades, 180o is successively carried out separately to every a pile mixed coal and overturn mixing, and ensure that bottom coal charge is really reversed, then carry out the physics mixing of 3 times with shovel loader.
Finally the mixed coal loading mechanical shovel of mixing to be entered in material loading suspension bucket in bucket, coal fills, winch to crane on the coal charger of pit kiln furnace roof side again, mixed coal is discharged in larry bin, and the weight of record bucket, until mixed coal all loads larry bin, complete material loading.For making mixed coal mix further, the order of coalingging of coal charger is coaling to three coal bunkers are filled successively by pusher side coal bunker, middle part coal bunker, coke side coal bunker, and by the total coal loading weight of crane record.After the mixed coal loading pit kiln of mixing, at 1220 ~ 1240 DEG C, destructive distillation 47h obtains target compound coke.
The volatile content of mixed coal and the intensity index M of coke is detected respectively according to GB/T212-2008, GB/T2006-2008, GB/T4000-1996 after above-mentioned coal blending and coking process complete
40, M
10, CRI, CSR.Result is as follows: the mixed coal adopting the method for the invention to prepare, coke index are compared with active service industrial production index, and the volatile content of mixed coal is 25.76%, and index have dropped 1.15%, the intensity index M of coke
40be 80.10%, improve 1.70%, M
10be 5.60%, improving 1.80%, CRI is 29.10%, and improving 1.90%, CSR is 60.93%, improves 1.22%.
embodiment 3
First take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 9%, 55%, 5% and 20% of raw material total mass ratio, amount to 17.80t; Take hard coal, meager coal respectively as raw material non-coking coal by 5%, 6% of raw material total mass ratio, amount to 2.00t.Raw material coking coal is broken into the powder of granularity < 3mm and mixes, wherein the powder of granularity < 3mm accounts for the ratio of raw material coking coal powder total amount is 77.2%; Again raw material non-coking coal be broken into the powder of granularity < 3mm and mix, requiring that the ratio that the powder of granularity < 3mm accounts for raw material non-coking coal powder total amount is 100%.
Then take the properties-correcting agent ZZZ-MF03 of 19.8kg by 0.10% of raw material total mass ratio, properties-correcting agent uniform spreading to be sprinkling upon on raw material non-coking coal and to mix, modification 65min at 27 DEG C.Then raw material coking coal broken, mixing in a upper operation is evenly divided into 50 heaps, then the raw material non-coking coal mixing modification is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump.By artificial hoe or spades, 180o is successively carried out separately to every a pile mixed coal and overturn mixing, and ensure that bottom coal charge is really reversed, then carry out the physics mixing of 4 times with shovel loader.
Finally the mixed coal loading mechanical shovel of mixing to be entered in material loading suspension bucket in bucket, coal fills, winch to crane on the coal charger of pit kiln furnace roof side again, mixed coal is discharged in larry bin, and the weight of record bucket, until mixed coal all loads larry bin, complete material loading.For making mixed coal mix further, the order of coalingging of coal charger is coaling to three coal bunkers are filled successively by pusher side coal bunker, middle part coal bunker, coke side coal bunker, and by the total coal loading weight of crane record.After the mixed coal loading pit kiln of mixing, at 1230 ~ 1250 DEG C, destructive distillation 43h obtains target compound coke.
The volatile content of mixed coal and the intensity index M of coke is detected respectively according to GB/T212-2008, GB/T2006-2008, GB/T4000-1996 after above-mentioned coal blending and coking process complete
40, M
10, CRI, CSR.Result is as follows: the mixed coal adopting the method for the invention to prepare, coke index are compared with active service industrial production index, and the volatile content of mixed coal is 24.40%, and index have dropped 2.51%, the intensity index M of coke
40be 81.40%, improve 3.00%, M
10be 6.20%, improving 1.20%, CRI is 31.10%, and improving-0.10%, CSR is 59.00%, improves-0.71%.
embodiment 4
First take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 7%, 32%, 33% and 17% of raw material total mass ratio, amount to 17.80t; Take hard coal, meager coal respectively as raw material non-coking coal by 4%, 7% of raw material total mass ratio, amount to 2.00t.Raw material coking coal is broken into the powder of granularity < 3mm and mixes, wherein the powder of granularity < 3mm accounts for the ratio of raw material coking coal powder total amount is 74.0%; Again raw material non-coking coal be broken into the powder of granularity < 3mm and mix, requiring that the ratio that the powder of granularity < 3mm accounts for raw material non-coking coal powder total amount is 100%.
Then take the properties-correcting agent ZZZ-MF04 of 23.76kg by 0.12% of raw material total mass ratio, properties-correcting agent uniform spreading to be sprinkling upon on raw material non-coking coal and to mix, modification 90min at 30 DEG C.Then raw material coking coal broken, mixing in a upper operation is evenly divided into 50 heaps, then the raw material non-coking coal mixing modification is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump.By artificial hoe or spades, 180o is successively carried out separately to every a pile mixed coal and overturn mixing, and ensure that bottom coal charge is really reversed, then carry out the physics mixing of 3 times with shovel loader.
Finally the mixed coal loading mechanical shovel of mixing to be entered in material loading suspension bucket in bucket, coal fills, winch to crane on the coal charger of pit kiln furnace roof side again, mixed coal is discharged in larry bin, and the weight of record bucket, until mixed coal all loads larry bin, complete material loading.For making mixed coal mix further, the order of coalingging of coal charger is coaling to three coal bunkers are filled successively by pusher side coal bunker, middle part coal bunker, coke side coal bunker, and by the total coal loading weight of crane record.After the mixed coal loading pit kiln of mixing, at 1280 ~ 1330 DEG C, destructive distillation 22h obtains target compound coke.
The volatile content of mixed coal and the intensity index M of coke is detected respectively according to GB/T212-2008, GB/T2006-2008, GB/T4000-1996 after above-mentioned coal blending and coking process complete
40, M
10, CRI, CSR.Result is as follows: the mixed coal adopting the method for the invention to prepare, coke index are compared with active service industrial production index, and the volatile content of mixed coal is 25.10%, and index have dropped 1.35%, the intensity index M of coke
40be 80.50%, improve 2.00%, M
10be 6.50%, improving 0.50%, CRI is 31.50%, and improving 0.05%, CSR is 59.87%, improves 1.15%.
embodiment 5
First take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 6%, 50%, 14% and 19% of raw material total mass ratio, amount to 17.80t; Take hard coal, meager coal respectively as raw material non-coking coal by 6%, 5% of raw material total mass ratio, amount to 2.00t.Raw material coking coal is broken into the powder of granularity < 3mm and mixes, wherein the powder of granularity < 3mm accounts for the ratio of raw material coking coal powder total amount is 80.0%; Again raw material non-coking coal be broken into the powder of granularity < 3mm and mix, requiring that the ratio that the powder of granularity < 3mm accounts for raw material non-coking coal powder total amount is 100%.
Then take the properties-correcting agent ZZZ-MF04 of 15.84kg by 0.08% of raw material total mass ratio, properties-correcting agent uniform spreading to be sprinkling upon on raw material non-coking coal and to mix, modification 45min at 27 DEG C.Then raw material coking coal broken, mixing in a upper operation is evenly divided into 50 heaps, then the raw material non-coking coal mixing modification is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump.By artificial hoe or spades, 180o is successively carried out separately to every a pile mixed coal and overturn mixing, and ensure that bottom coal charge is really reversed, then carry out the physics mixing of 2 times with shovel loader.
Finally the mixed coal loading mechanical shovel of mixing to be entered in material loading suspension bucket in bucket, coal fills, winch to crane on the coal charger of pit kiln furnace roof side again, mixed coal is discharged in larry bin, and the weight of record bucket, until mixed coal all loads larry bin, complete material loading.For making mixed coal mix further, the order of coalingging of coal charger is coaling to three coal bunkers are filled successively by pusher side coal bunker, middle part coal bunker, coke side coal bunker, and by the total coal loading weight of crane record.After the mixed coal loading pit kiln of mixing, at 1200 ~ 1210 DEG C, destructive distillation 60h obtains target compound coke.
The volatile content of mixed coal and the intensity index M of coke is detected respectively according to GB/T212-2008, GB/T2006-2008, GB/T4000-1996 after above-mentioned coal blending and coking process complete
40, M
10, CRI, CSR.Result is as follows: the mixed coal adopting the method for the invention to prepare, coke index are compared with active service industrial production index, and the volatile content of mixed coal is 25.12%, and index have dropped 0.87%, the intensity index M of coke
40be 82.13%, improve 2.56%, M
10be 6.10%, improving 1.00%, CRI is 30.95%, and improving 1.20%, CSR is 60.75%, improves 2.55%.
Claims (10)
1. a method for non-coking coal modification coal-blending coking, it is characterized in that comprising get the raw materials ready, coal blending and coking process, specifically comprise:
A, to get the raw materials ready: take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 5 ~ 10%, 29 ~ 55%, 5 ~ 40% and 15 ~ 20% of raw material total mass ratio; Hard coal, meager coal is taken respectively as raw material non-coking coal by 4 ~ 6%, 5 ~ 7% of raw material total mass ratio; Raw material coking coal, raw material non-coking coal are carried out fragmentation respectively, mix for subsequent use;
B, coal blending: take properties-correcting agent by 0.08 ~ 0.12% of raw material total mass ratio, to be sprinkling upon properties-correcting agent uniform spreading on raw material non-coking coal and to mix modification, modified raw material non-coking coal and raw material coking coal are mixed to obtain mixed coal;
C, coking: the mixed coal of mixing is loaded destructive distillation in pit kiln and obtain target compound coke.
2. the method for non-coking coal modification coal-blending coking according to claim 1, it is characterized in that getting the raw materials ready described in operation A refers to and take a flat unrestrained coal, mixed coking coal, mixed 1/3 coking coal and dish river coal respectively as raw material coking coal by 5 ~ 10%, 29 ~ 55%, 5 ~ 40% and 15 ~ 20% of raw material total mass ratio; Hard coal, meager coal is taken respectively as raw material non-coking coal by 5%, 6% of raw material total mass ratio; Raw material coking coal, raw material non-coking coal are carried out fragmentation respectively, mix for subsequent use.
3. the method for non-coking coal modification coal-blending coking according to claim 1, is characterized in that the particle size after cracking of the raw material coking coal described in operation A is that < 3mm accounts for 74 ~ 80%.
4. the method for non-coking coal modification coal-blending coking according to claim 1, is characterized in that the particle size after cracking of the raw material non-coking coal described in operation A is that < 3mm accounts for 100%.
5. the method for non-coking coal modification coal-blending coking according to claim 1, it is characterized in that the coal blending described in process B refers to, properties-correcting agent is taken by 0.10% of raw material total mass ratio, properties-correcting agent uniform spreading to be sprinkling upon on raw material non-coking coal and to mix modification, modified raw material non-coking coal and raw material coking coal are mixed to obtain mixed coal.
6. the method for non-coking coal modification coal-blending coking according to claim 1 or 5, is characterized in that described properties-correcting agent is one or more in ZZZ-MF01, ZZZ-MF02, ZZZ-MF03 or ZZZ-MF04.
7. the method for non-coking coal modification coal-blending coking according to claim 1, it is characterized in that to be sprinkling upon by properties-correcting agent uniform spreading on raw material non-coking coal and to mix modification described in process B, the modification temperature adopted is 15 ~ 30 DEG C, and modification time is 30 ~ 90min.
8. the method for non-coking coal modification coal-blending coking according to claim 1, it is characterized in that described in process B, modified raw material non-coking coal and raw material coking coal being mixed mixed coal refers to, raw material coking coal broken, mixing in operation A is evenly divided into >=10 heaps, then the raw material non-coking coal having mixed modification in process B is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump, after manually every a pile mixed coal being mixed, then carry out the physics mixing of 2 ~ 4 times with shovel loader.
9. the method for the non-coking coal modification coal-blending coking according to claim 1 or 8, it is characterized in that described modified raw material non-coking coal and raw material coking coal being mixed mixed coal refers to, raw material coking coal broken, mixing in operation A is evenly divided into 50 heaps, then the raw material non-coking coal having mixed modification in process B is evenly divided into corresponding number, uniform spreading is sprinkling upon on each raw material coking dump, after manually every a pile mixed coal being mixed, then carry out the physics mixing of 2 ~ 4 times with shovel loader.
10. the method for non-coking coal modification coal-blending coking according to claim 1, it is characterized in that the pyrolysis temperature described in operation C is 1200 ~ 1330 DEG C, retorting time is 22 ~ 60h.
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