CN109135765B - Coke and preparation method thereof - Google Patents
Coke and preparation method thereof Download PDFInfo
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- CN109135765B CN109135765B CN201810947576.7A CN201810947576A CN109135765B CN 109135765 B CN109135765 B CN 109135765B CN 201810947576 A CN201810947576 A CN 201810947576A CN 109135765 B CN109135765 B CN 109135765B
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- 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
- C10B1/00—Retorts
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- 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
-
- 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
- C10B57/045—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing mineral oils, bitumen, tar or the like or mixtures thereof
-
- 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
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- Coke Industry (AREA)
Abstract
The invention discloses a kind of coke and preparation methods.Coke coal coking with forms, and the mixed coal includes the component of following parts by weight: 1/3 65-75 parts of coking coal, 5-10 parts of lean coal, 15-20 parts of coking coal, 3-8 parts of meager lean coal.The invention has the benefit that the crushing strength and wear-resistant strength of the coke are higher.
Description
Technical field
The present invention relates to coke, in particular to a kind of coke and preparation method thereof.
Background technique
Coal chemical industry refers to using coal as raw material, so that coal is converted into gas, liquid and solid fuel and chemistry through chemical process
The process of product mainly includes coal gasification, liquefaction, destructive distillation and tar production and carbide acetylene processing etc..Wherein, the dry distillation of coal obtains
To major product be exactly coke.And the important use of coke is the blast furnace ironmaking in steel and iron industry.According to the ash content of coke,
The indexs such as sulphur content, mechanical strength, reactivity and post reaction strength, coke are divided into level-one coke, second level coke and coke three times.
The Chinese patent of Publication No. CN104694145A discloses the coke and coking process of a kind of adapted Indonesia bottle coal.
The coke is formed by following mass percent coal blending mixed coking: 1/3 coking coal 10%-15%, Indonesia bottle coal 5%-10%, bottle coal
15%-20%, rich coal 20%-25%, coking coal 30%-40%, lean coal 4%-8%.
Although the coke reaches in realization post reaction strength greater than 65%, meet blast furnace ironmaking expands refining while needs
Coking coal resource reduces coal blending cost, but the mechanical strength of the coke is lower, has much room for improvement.
Summary of the invention
The object of the present invention is to provide a kind of coke.The crushing strength and wear-resistant strength of the coke are higher.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of coke, coal coking forms with, and the mixed coal includes the component of following parts by weight: 1/3 coking coal 65-
75 parts, 5-10 parts of lean coal, 15-20 parts of coking coal, 3-8 parts of meager lean coal.
The present invention is further arranged to: according to parts by weight, the mixed coal further includes 0.1-0.2 parts of boric acid, borax 0.1-
0.2 part and boron oxide 0.1-0.2 parts.
The present invention is further arranged to: according to parts by weight, the mixed coal further includes 0.4-0.5 parts of titanium boride and titanium dioxide
1-3 parts of titanium.
The present invention is further arranged to: according to parts by weight, the mixed coal further include 2-3 parts of pitch, 3-8 parts of petroleum coke and
2-4 parts of tar slag.
The present invention is further arranged to: according to parts by weight, the mixed coal further includes 2-4 parts of waste plastics.
The present invention is further arranged to: the waste plastics selects polypropylene.
The present invention is further arranged to: according to parts by weight, the mixed coal further includes 0.08-0.13 parts of aluminum fluoride and chlorination
0.01-0.02 parts of yttrium.
Another goal of the invention of the present invention is to provide a kind of preparation method of coke, include the following steps:
Step 1: according to parts by weight, weighing 65-75 parts of 1/3 coking coal, 5-10 parts of lean coal, 15-20 parts of coking coal, meager lean coal 3-
8 parts, 0.1-0.2 parts of boric acid, 0.1-0.2 parts of borax, 0.1-0.2 parts of boron oxide, 0.4-0.5 parts of titanium boride, titanium dioxide 1-3
Part, 2-3 parts of pitch, 3-8 parts of petroleum coke, 2-4 parts of tar slag, 2-4 parts of waste plastics, 0.08-0.13 parts of aluminum fluoride and yttrium chloride
0.01-0.02 parts；
Step 2: first 1/3 coking coal, lean coal, coking coal and meager lean coal being mixed, then are crushed, boron is then added
Acid, borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar slag, waste plastics, aluminum fluoride and yttrium chloride are smash
Gu then carry out charing coking, coking temperature be 950-1050 DEG C, coking time 18-20h obtains red coke；
Step 3: coke quenching water is added into red coke and carries out quenching, is dried to obtain coke after quenching.
The present invention is further arranged to: the coke quenching water by forming following weight percentage components:
Polyethylene glycol 10-20%
Sodium chloride 5-10%
Boric acid 1-5%
Surfactant 50-60%
Pyridine 1-5%
Water 20-30%.
The present invention is further arranged to: according to parts by weight, the surfactant includes neopelex, alkyl
Phenol polyethenoxy ether and octadecyl dihydroxy ethyl amine oxide, the neopelex, alkyl phenol polyoxyethylene ether and
The weight ratio of octadecyl dihydroxy ethyl amine oxide is 3: 1: 1.
In conclusion the invention has the following advantages:
1,1/3 coking coal is between coking coal, rich coal and bottle coal containing heavy caking coal medium or compared with high volatile.
When independent coking, the higher coke of intensity can be generated；
2, the degree of coalification of lean coal is relatively high, belongs to the coal for the caking property that degree of metamorphism is medium, volatile matter is relatively low,
The gel generated in heating process is less, but caking property is very high.When carrying out independent coking with lean coal, it can refine out
Crackle is less, lumpiness is larger and the higher coke of crushing strength, but the meltbility of coke is comparatively poor, coke it is resistance to
It is also insufficient to grind performance.Lean coal is incorporated in mixed coal can properly increase the lumpiness of coke, preferable as coke making and coal blending effect；
3, the degree of metamorphism of coking coal is more slightly higher than rich coal, and volatile matter is more slightly lower than rich coal, macromolecule side chain in molecular structure
Fewer than rich coal, oxygen content is lower.The liquid product generated during thermal decomposition is more less slightly than rich coal, but thermal stability is more than rich coal
Height, gel quantity is more and viscosity is big, and solidification temperature is higher, and Semicoke Contraction amount and contraction speed are smaller, so being used for main coke
Not only lumpiness is big for the coke that coal is refined out, crackle is few, and wear-resistant strength is high, and crushing strength is also preferable.Coking coal is coking capacity
Best coal is the coal of the best coke that can refine out high quality.During coke making and coal blending, the amount of allocating of coking coal can
To be fluctuated within the scope of than wider one, and it is able to produce out the higher coke of intensity.Therefore matches in mixed coal and become owner of
The purpose of coking coal is exactly the intensity in order to increase coke.But since the reserves of China's coking coal are fairly limited, in the mistake of coal blending
Cheng Zhong will reduce the usage amount of coking coal to the greatest extent, to save the yield of coking coal；
4, meager lean coal refers to degree of coalification height, and volatile matter is low, bituminous coal of the caking property between meager coal and then lean coal.Meager lean coal
Dry ash free basis volatile matter Vdaf> 10-20%, adhesive index > 5-20.Meager lean coal generates minute quantity colloid when heated
Body cannot individually be smelt blocky coke, the transition coal between coking coal and mill coal.When independent coking, meager lean coal is generated
Coke powder it is very much；When being suitble to the coal of coking to mix with other, the incorporation of meager lean coal increases the lumpiness of coke product, but
It can play the role of leaning agent；
5, the borate in boric acid and borax can reduce side in conjunction with the carbon atom on lattice periphery in the case where no aqueous vapor
The total amount of edge carbon atom isoreactivity position；Boron is embedded in the interlayer of graphite crystal in coke in the form of compound, is formed in carbon
Substitutional solid solution；Play the role of protective film in the surface that boric acid and borax are covered on coke；Boron is nonmetalloid, has one
As common nonmetalloid reactivity worth, receive electronics in most cases, coke surface formed electronegativity ion, make oxygen
Chemisorption position can increase, and hinder reaction of the oxygen to carbon, inhibit the generation of CO；When boric acid is heated to 1100 DEG C with coke, portion
Dehydration is divided to obtain metaboric acid HBO2, further dehydration obtains B2O3, B2O3It is typical acidic materials.Since acidic materials heating is de-
Water, in B2O3Surface forms B-O-B key.B is short of electricity daughter, has electrophilic tendency, and boudouard reaction easily occurs in coke table
On planar defect position.There are a large amount of carbon lone pair electrons on these surface defect positions, and B-O-B key is made to be easy to gather at lone pair electrons
Collection is rely the active sites of generation to block thrombolytic agents, and the effective surface area of active site reduces, and thus hinders thrombolytic agents
Generation, this inhibition being strengthened due to increasing because of B-O-B bond number amount.Therefore, the addition of boric acid and borax makes coke
The reactivity of charcoal thrombolytic agents constantly reduces, and post reaction strength can constantly enhance；
6, the addition of boron oxide increases B-O-B bond number amount, further enhances the inhibition to thrombolytic agents；
7, titanium boride can reduce reactivity, improve post reaction strength, and residue without negative effect, is suitble to blast furnace process
Industrial applications.Titanium dioxide also can reduce reactivity, improve post reaction strength.Meanwhile titanium dioxide is in blast furnace process
Ti (CN) high-melting-point substances are reduced into, are adhered on the refractory brick of blast furnace crucibe, plays the role of protecting blast furnace crucibe, extend
The service life of blast furnace；
8, the addition of pitch, petroleum coke and tar slag can be improved the adhesive property of mixed coal；Meanwhile it is molten in system softening
During melting, good eutectic is formed between pitch, petroleum coke, tar slag, polypropylene and mixed coal.Meanwhile pitch, petroleum
Burnt and tar slag addition makes mobility enhancing of the whole system when softening melting, is more conducive to overflowing for some light components
Out, it reduces gap to generate, so that on the one hand filling is received because of polypropylene fusion in carbonization process for pitch, petroleum coke and tar slag
The cavity that contracting is formed, and be pyrolyzed the free radical to be formed with polypropylene and certain effect occurs to inhibit polypropylene because of volatile matter
The porosity that is excessively high and increasing coke causes the reactivity of coke to increase to make up polyacrylic be added；
9, polypropylene and mixed coal are macromolecular structure and are made of C, H element, thus can carry out Co carbonization.It is useless
The addition of plastics can save part coking coal, but will not influence the yield of semicoke, while improve the yield of tar；
10, the reactivity of aluminum fluoride STRENGTH ON COKE has negative catalyst, to reduce the reactivity of coke, improves coke gasification reaction
Intensity afterwards；
11, yttrium chloride is microelement yttrium to be introduced in coke deactivator system, and the addition of yttrium enhances coke deactivator
Passivation effect further decreases coke reactivity, improves post reaction strength of coke；
12, polyethylene glycol plays the role of foam stabilizing.Sodium chloride, which plays, urges the dry and graphited work in the red burnt surface of promotion high temperature
With.Boric acid permeates rapidly from coke surface, forms the boronation film in filling coke surface duct, strengthens coke surface intensity.Surface
Activating agent can generate the air film on the red burnt surface of package high temperature, contact water directly with the red coke of high temperature, prevent water substantially to height
The physical impact destruction and chemical activation destruction of the red coke of temperature, increase coke specific surface area, effectively adsorb dust, subtract
The discharge amount of few dangerous vapors.Pyridine can form boron nitride with boron under the high temperature conditions, further strengthen coke surface intensity,
To which environmental pollution and thermal pollution caused by quenching be greatly lowered, the post reaction strength of coke is effectively improved；
13, neopelex belongs to anionic surfactant, and alkyl phenol polyoxyethylene ether belongs to nonionic table
Face activating agent, octadecyl dihydroxy ethyl amine-oxides belong to amphoteric surfactant.Neopelex, alkyl phenol polyoxy
Vinethene and octadecyl dihydroxy ethyl amine-oxides compounding further increase the stability of air film.
Specific embodiment
Embodiment 1-5 is used to illustrate the component of coke.The component of embodiment 1-5 coke is shown in Table 1.
Table 1, embodiment 1-5 coke components table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| 1/3 coking coal/part | 70 | 65 | 68 | 72 | 75 |
| Lean coal/part | 10 | 8 | 5 | 9 | 6 |
| Coking coal/part | 16 | 20 | 18 | 15 | 17 |
| Meager lean coal/part | 8 | 5 | 4 | 6 | 3 |
| Boric acid/part | 0.1 | 0.2 | 0.1 | 0.1 | 0.2 |
| Borax/part | 0.2 | 0.1 | 0.2 | 0.1 | 0.1 |
| Boron oxide/part | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 |
| Titanium boride/part | 0.4 | 0.5 | 0.4 | 0.5 | 0.4 |
| Titanium dioxide/part | 3 | 2 | 1 | 2 | 3 |
| Pitch/part | 2 | 3 | 2 | 3 | 2 |
| Petroleum coke/part | 8 | 3 | 4 | 5 | 6 |
| Tar slag/part | 4 | 2 | 2 | 3 | 4 |
| Waste plastics/part | 4 | 3 | 2 | 3 | 4 |
| Aluminum fluoride/part | 0.08 | 0.11 | 0.13 | 0.09 | 0.10 |
| Yttrium chloride/part | 0.02 | 0.01 | 0.02 | 0.01 | 0.01 |
Note: " part " refers to parts by weight；Waste plastics selects polypropylene；
Wherein, for the purchase of 1/3 coking coal from vegetable garden high ash and Ge Ting, the ratio of vegetable garden high ash and Ge Ting are 53: 17；Lean coal purchase
It is logical from Rui Mao；River S1.6 is moistened in coking coal purchase certainly；Meager lean coal purchase is pacified from the Lushui River.
In conjunction with table 1, the preparation method of coke described further below.
A kind of preparation method of coke, includes the following steps:
Step 1: according to parts by weight, weighing 1/3 coking coal, lean coal, coking coal, meager lean coal, boric acid, borax, boron oxide, boronation
Titanium, titanium dioxide, pitch, petroleum coke, tar slag, polypropylene, aluminum fluoride and yttrium chloride；
Step 2: first 1/3 coking coal, lean coal, coking coal, meager lean coal are mixed, then are crushed, then be added boric acid,
Borax, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar slag, polypropylene, aluminum fluoride and yttrium chloride are made firm by ramming,
Charing coking is carried out again, and coking temperature is 950-1050 DEG C, and coking time 18-20h obtains red coke；
Step 3: coke quenching water is added into red coke and carries out quenching, is dried to obtain coke after quenching.
The preparation method parameter list of table 2, coke
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Quenching temperature/DEG C | 1050 | 1000 | 1020 | 950 | 970 |
| Coking time/h | 20 | 18 | 19 | 18.5 | 19.5 |
Embodiment 6-10 is used to illustrate the component of coke quenching water.The component of embodiment 6-10 coke quenching water is shown in Table 3.
The component table of table 3, embodiment 6-10 coke quenching water
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | |
| Polyethylene glycol/% | 20 | 18 | 15 | 10 | 13 |
| Sodium chloride/% | 8 | 5 | 6 | 7 | 10 |
| Boric acid/% | 3 | 4 | 2 | 1 | 5 |
| Surfactant/% | 55 | 52 | 57 | 60 | 50 |
| Pyridine/% | 5 | 4 | 3 | 1 | 2 |
| Water/% | 25 | 22 | 27 | 30 | 20 |
Note: " % " refers to weight percent；Surfactant include neopelex, alkyl phenol polyoxyethylene ether and
Octadecyl dihydroxy ethyl amine oxide.Neopelex, alkyl phenol polyoxyethylene ether and octadecyl dihydroxy ethyl oxygen
The weight ratio for changing amine is 3: 1: 1.
In conjunction with table 3, the preparation method of coke quenching water described further below.
S1: neopelex, alkyl phenol polyoxyethylene ether and octadecane are weighed respectively for 3: 1: 1 according to weight ratio
Base dihydroxy ethyl amine oxide is uniformly mixed and obtains surfactant；
S2: according to weight percent, polyethylene glycol, sodium chloride, boric acid, surfactant, pyridine and water are weighed, mixing is equal
It is even to obtain coke quenching water.
Wherein, embodiment 1 uses the coke quenching water of embodiment 6, and embodiment 2 uses the coke quenching water of embodiment 7, and embodiment 3 is adopted
With the coke quenching water of embodiment 8, embodiment 4 uses the coke quenching water of embodiment 9, and embodiment 5 uses the coke quenching water of embodiment 10.
Reactivity and post reaction strength test
Step 1: referring to GB/T 4000-1996 " coke reactivity and post reaction strength test method " testing example 1
Reactivity and post reaction strength；
Step 2: being repeated 5 times step 1, the reactivity for the embodiment 1 that 5 times obtain and post reaction strength are averaged conduct
Final reactivity and post reaction strength；
Step 3: embodiment 2-5 being repeated into step 1 and 2, obtains the reactivity and post reaction strength of embodiment 2-5.
Table 4, embodiment 1-5 reactivity and post reaction strength testing record sheet
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Reactivity/% | 22.23 | 21.57 | 20.69 | 20.89 | 21.78 |
| Post reaction strength/% | 69.87 | 70.49 | 71.46 | 71.07 | 70.37 |
As known from Table 4, the reactivity of embodiment 1-5 and post reaction strength meet the standard of level-one coke.Comparison is implemented
Example 1-5 it is found that embodiment 3 reactive minimum, post reaction strength highest.
Component testing
The ash content of embodiment 1-5 is measured referring to GB/T 2001-2013 " proximate analysis of coke measuring method ", is joined
The sulphur content of embodiment 1-5 is measured according to GB/T 2286-2017 " measuring method of coke total sulphur content ".
Table 5, embodiment 1-5 component testing record sheet
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Ash content (Ad)/% | 8.64 | 8.33 | 7.73 | 8.05 | 8.46 |
| Sulphur content ST, d(mass fraction)/% | 0.62 | 0.59 | 0.58 | 0.60 | 0.61 |
As known from Table 5, the ash content of embodiment 1-5 and sulphur content meet the standard of level-one coke.Comparative example 1-5 can
Know, the ash content and sulphur content of embodiment 3 are minimum.
Mechanical robustness testing
The mechanical strength of embodiment 1-5 is surveyed referring to GB/T 2006-2008 " measuring method of coke strength "
It is fixed.
Table 6, embodiment 1-5 mechanical robustness testing record sheet
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| M40/ % | 87.3 | 87.5 | 87.7 | 87.6 | 87.4 |
| M10/ % | 4.5 | 4.4 | 4.2 | 4.3 | 4.4 |
Note: M40Bigger, surface crushing strength is higher；M10It is smaller, show that wear-resistant strength is higher.
As known from Table 6, the mechanical strength of embodiment 1-5 meets the standard of level-one coke.Comparative example 1-5 it is found that
The crushing strength highest of embodiment 3, wear-resistant strength highest.
Comparative example 1
Select the scheme 4 as a comparison case 1 of the Chinese patent of Publication No. CN104694145A.
Embodiment 3 and comparative example 1 are repeated into reactivity and post reaction strength test, component testing and mechanical robustness testing simultaneously
It is recorded.
1 testing record sheet of table 7, embodiment 3 and comparative example
| Embodiment 3 | Comparative example 1 | |
| Reactivity/% | 20.69 | 25.95 |
| Post reaction strength/% | 71.46 | 65.65 |
| Ash content (Ad)/% | 7.73 | 11.14 |
| Sulphur content ST, d(mass fraction)/% | 0.58 | 0.68 |
| M40/ % | 87.7 | 82.3 |
| M10/ % | 4.2 | 6.7 |
Note: M40Bigger, surface crushing strength is higher；M10It is smaller, show that wear-resistant strength is higher.
As known from Table 7, compared to comparative example 1, embodiment 3 is in reactivity, post reaction strength, ash content, sulphur content, crushing strength
With it is more excellent in the indexs such as wear-resistant strength.
Comparative example 2
The difference of comparative example 2 and embodiment 3 is removal yttrium chloride, other are same as Example 3.
Comparative example 3
The difference of comparative example 3 and embodiment 3 is removal aluminum fluoride, other are same as Example 3.
Comparative example 4
The difference of comparative example 4 and embodiment 3 is to remove yttrium chloride and aluminum fluoride simultaneously, other are same as Example 3.
Embodiment 3 and comparative example 2-4 are repeated into reactivity and post reaction strength test, component testing and mechanical robustness testing
And it is recorded.
Table 8, embodiment 3 and comparative example 2-4 testing record sheet
| Embodiment 3 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Reactivity/% | 20.69 | 24.37 | 24.54 | 25.17 |
| Post reaction strength/% | 71.46 | 66.23 | 67.13 | 65.97 |
| Ash content (Ad)/% | 7.73 | 9.65 | 8.81 | 9.69 |
| Sulphur content ST, d(mass fraction)/% | 0.58 | 0.68 | 0.64 | 0.68 |
| M40/ % | 87.7 | 86.3 | 85.3 | 85.4 |
| M10/ % | 4.2 | 5.7 | 6.3 | 6.3 |
Note: M40Bigger, surface crushing strength is higher；M10It is smaller, show that wear-resistant strength is higher.
Embodiment 3 and comparative example 2-4 can be concluded that in contrast table 8
Embodiment 3 is superior in the indexs such as reactivity, post reaction strength, ash content, sulphur content, crushing strength and wear-resistant strength
Comparative example 2 and 3.
Comparative example 4 is inferior to comparative example 2 and 3 in reactivity and the two indexs of post reaction strength.It can be seen that chlorination
Yttrium and aluminum fluoride can reduce reactivity, improve post reaction strength.But yttrium chloride and aluminum fluoride are used in compounding and cause to react
Property reduction degree and post reaction strength raising degree be greater than yttrium chloride and aluminum fluoride be respectively used alone cause it is reactive
The sum of reduction degree and post reaction strength raising degree.Therefore, yttrium chloride and aluminum fluoride can generate compounding in the present invention and make
With increasing the raising degree of reactive reduction degree and post reaction strength.
Comparative example 4 and comparative example 2 is close, but is inferior to comparative example 3 on ash content and sulphur content these three indexs.Thus may be used
See, yttrium chloride can reduce ash content and sulphur content, and aluminum fluoride does not almost impact ash content and sulphur content.But yttrium chloride and
Aluminum fluoride, which is used in compounding, causes the reduction degree of ash content and sulphur content that the reduction for leading to ash content and sulphur content is used alone greater than yttrium chloride
Degree.Therefore, yttrium chloride and aluminum fluoride can generate complex role in the present invention, increase the reduction degree of ash content and sulphur content.
Comparative example 4 is inferior to comparative example 2 in crushing strength and wear-resistant strength the two indexs, but more with comparative example 3
It is close.It can be seen that yttrium chloride does not almost impact crushing strength and wear-resistant strength, and aluminum fluoride can be improved it is anti-crushing strong
Degree and wear-resistant strength.But yttrium chloride and aluminum fluoride are used in compounding the raising degree of crushing strength and wear-resistant strength are caused to be greater than
The raising degree for leading to crushing strength and wear-resistant strength is used alone in aluminum fluoride.Therefore, yttrium chloride and aluminum fluoride be in the present invention
Complex role can be generated, the raising degree of crushing strength and wear-resistant strength is increased.
The present embodiment is only explanation of the invention, is not limitation of the present invention, and those skilled in the art exist
It can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as in the present invention
Scope of the claims in all by the protection of Patent Law.
Claims (3)
1. a kind of coke, it is characterized in that: coal coking forms with, the mixed coal includes the component of following parts by weight: 1/3
65-75 parts of coking coal, 5-10 parts of lean coal, 15-20 parts of coking coal, 3-8 parts of meager lean coal；
According to parts by weight, the mixed coal further includes 0.1-0.2 parts of boric acid, 0.1-0.2 parts of borax and 0.1-0.2 parts of boron oxide；
The mixed coal further includes 0.4-0.5 parts and titanium dioxide 1-3 parts of titanium boride；According to parts by weight, the mixed coal further includes drip
2-3 parts green, 3-8 parts of petroleum coke and 2-4 parts of tar slag；According to parts by weight, the mixed coal further includes 2-4 parts of waste plastics；According to
Parts by weight, the mixed coal further include 0.08-0.13 parts and yttrium chloride 0.01-0.02 parts of aluminum fluoride；
The preparation method of the coke includes the following steps:
Step 1: according to parts by weight, weigh 65-75 parts of 1/3 coking coal, 5-10 parts of lean coal, 15-20 parts of coking coal, 3-8 parts of meager lean coal,
0.1-0.2 parts of boric acid, 0.1-0.2 parts of borax, 0.1-0.2 parts of boron oxide, 0.4-0.5 parts of titanium boride, 1-3 parts of titanium dioxide, drip
2-3 parts green, 3-8 parts of petroleum coke, 2-4 parts of tar slag, 2-4 parts of waste plastics, 0.08-0.13 parts of aluminum fluoride and yttrium chloride 0.01-
0.02 part；
Step 2: first 1/3 coking coal, lean coal, coking coal and meager lean coal being mixed, then are crushed, boric acid, boron is then added
Sand, boron oxide, titanium boride, titanium dioxide, pitch, petroleum coke, tar slag, waste plastics, aluminum fluoride and yttrium chloride are made firm by ramming, then
Charing coking is carried out, coking temperature is 950-1050 DEG C, and coking time 18-20h obtains red coke；
Step 3: coke quenching water is added into red coke and carries out quenching, is dried to obtain coke after quenching；
The coke quenching water by forming following weight percentage components:
Polyethylene glycol 10-20%
Sodium chloride 5-10%
Boric acid 1-5%
Surfactant 50-60%
Pyridine 1-5%
Water 20-30%.
2. coke according to claim 1, it is characterized in that: the waste plastics selects polypropylene.
3. coke according to claim 1, it is characterized in that: the surfactant includes dodecyl according to parts by weight
Benzene sulfonic acid sodium salt, alkyl phenol polyoxyethylene ether and octadecyl dihydroxy ethyl amine oxide, the neopelex, alkyl phenol
Polyoxyethylene ether and the weight ratio of octadecyl dihydroxy ethyl amine oxide are 3:1:1.
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