CN114525160A - Coke heat intensity auxiliary material and preparation process thereof - Google Patents
Coke heat intensity auxiliary material and preparation process thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/14—Use of additives to fuels or fires for particular purposes for improving low temperature properties
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/0204—Metals or alloys
- C10L2200/0213—Group II metals: Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd, Hg
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/0204—Metals or alloys
- C10L2200/0218—Group III metals: Sc, Y, Al, Ga, In, Tl
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/0272—Silicon containing compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/029—Salts, such as carbonates, oxides, hydroxides, percompounds, e.g. peroxides, perborates, nitrates, nitrites, sulfates, and silicates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention relates to the technical field of coke production auxiliary agents, in particular to a coke heat intensity auxiliary material and a preparation process thereof. The coke heat intensity auxiliary material comprises the following components in parts by weight: 30-40 parts of a boron-containing compound, 10-15 parts of silicon dioxide, 5-10 parts of titanium dioxide, 3-5 parts of aluminum oxide, 3-5 parts of ferroferric oxide and 0.5-1 part of lanthanum chloride, wherein the boron-containing compound comprises boric acid, borax and boron oxide, and the boric acid comprises the following components in parts by weight: borax: boron oxide =1:1-3: 1-3. The invention has the beneficial effects that: the coke hot strength auxiliary material can obviously reduce the reactivity of coke and improve the strength after reaction.
Description
Technical Field
The invention belongs to the technical field of coke production auxiliary agents, and particularly relates to a coke heat intensity auxiliary material and a preparation process thereof.
Background
The coke is a solid fuel formed by a series of complex physicochemical processes such as pyrolysis, polycondensation, solidification, shrinkage and the like of a coking coal material under the action of high-temperature dry distillation. More than 96% carbon and the calorific value is about 29X 103 kJ/kg. The coke is mainly used for blast furnace ironmaking and blast furnace smelting of nonferrous metals such as copper, lead, zinc, titanium, antimony, mercury and the like, and plays roles of a reducing agent, a heating agent and a material column framework. Among the coke performance indexes, the coke reactivity and the strength after reaction are more and more important for blast furnace iron making. At present, the coke hot strength auxiliary material can reduce the coke reactivity and improve the strength of the coke after reaction.
Chinese patent publication No. CN101654634A discloses a coke passivating agent. The coke passivator comprises the following raw materials in parts by weight: 1-16 parts of glucose or calcium chloride, 1-45 parts of boric anhydride, 1-15 parts of titanium dioxide, 1-10 parts of silicon dioxide, 1-45 parts of anhydrous borax, 1-46 parts of calcium borate and 1-30 parts of barium metaborate. The coke passivator can improve the thermal property of coke, inhibit the dissolution loss reaction of the coke, reduce the reactivity of the coke, increase the thermal strength of the coke, optimize the form of carbon and reduce the cracking of the coke after entering a furnace.
Based on this, the present inventors have desired to provide another coke hot strength auxiliary material capable of reducing the reactivity of coke and improving the strength after reaction.
Disclosure of Invention
The invention aims to provide a coke hot strength auxiliary material which can obviously reduce the reactivity of coke and improve the strength after reaction. The above object of the present invention is achieved by the following technical solutions:
the coke hot strength auxiliary material comprises the following components in parts by weight:
30-40 parts of boron-containing compound
10-15 parts of silicon dioxide
5-10 parts of titanium dioxide
3-5 parts of aluminum oxide
3-5 parts of ferroferric oxide
0.5-1 part of lanthanum chloride
The boron-containing compound comprises boric acid, borax and boron oxide according to the weight ratio of 1: 1-3.
Further, the coke hot strength material also comprises 20-30 parts by weight of high magnesium powder.
Further, the coke heat-strengthening auxiliary materials also comprise 5-10 parts of silicon-aluminum powder and 5-10 parts of silicon-calcium powder according to parts by weight.
Further, the coke heat-intensity auxiliary material also comprises 1-5 parts by weight of glucose.
Further, the coke heat-intensity auxiliary material also comprises 1-3 parts of triethanolamine according to the parts by weight.
The invention also aims to provide a preparation process of the coke hot strength auxiliary material, which comprises the following steps:
the method comprises the following steps: mixing boric acid, borax and boron oxide according to the weight ratio of boric acid to borax to boron oxide of 1:1-3 to obtain a boron-containing compound;
step two: weighing 30-40 parts of boron-containing compound, 10-15 parts of silicon dioxide, 5-10 parts of titanium dioxide, 3-5 parts of aluminum oxide, 3-5 parts of ferroferric oxide, 0.5-1 part of lanthanum chloride, 20-30 parts of high magnesium powder, 5-10 parts of silicon-aluminum powder, 5-10 parts of calcium silicate powder, 1-5 parts of glucose and 1-3 parts of triethanolamine according to parts by weight, and uniformly mixing.
In conclusion, the invention has the following beneficial effects:
1. boric acid and borate in borax can be combined with carbon atoms at the periphery of crystal lattices under the anhydrous condition, so that the total amount of active sites such as edge carbon atoms is reduced; boron is intercalated as a compound between layers of graphite crystals in the coke to form substitutional solid solutions in the carbon; boric acid and borax cover the surface of the coke to play a role of a protective film; boron is a non-metallic element and has the reaction performance of common non-metallic elements, electrons are accepted under most conditions, electronegative ions are formed on the surface of coke, the chemical adsorption potential energy of oxygen is increased, the reaction of oxygen on carbon is hindered, and the generation of CO is inhibited; when the boric acid is heated to 1100 ℃ along with the coke, partial dehydration is carried out to obtain metaboric acid HBO2Further dehydrating to obtain B2O3，B2O3Are typically acidic materials. Due to dehydration of the acidic substance by heating, in B2O3The surface forms a B-O-B bond. B is electron-deficient, has electrophilic tendency, and is easy to react in coke dissolution lossOccurs on the surface of the coke at the defect site. The large number of carbon arc pair electrons exist on the surface defect sites, so that B-O-B bonds are easy to gather to lone pair electrons, active sites on which the dissolution loss reaction is based are blocked, the effective surface area of the active sites is reduced, the dissolution loss reaction is hindered, and the inhibition effect is enhanced due to the increase of the number of the B-O-B bonds. Therefore, the reactivity of coke dissolution loss reaction is continuously reduced by adding the boric acid and the borax, and the strength after the reaction is continuously enhanced;
2. the addition of boron oxide increases the number of B-O-B bonds, and further enhances the inhibition effect on the dissolution loss reaction;
3. the silicon dioxide, the titanium dioxide, the alumina and the ferroferric oxide have a negative catalytic effect on the reactivity of the coke, so that the reactivity of the coke is reduced, and the strength of the coke after reaction is improved;
4. lanthanum chloride is introduced into a coke heat-intensity material system as a trace element lanthanum, and the lanthanum is added to react with iron and silicon under the high-heat condition of coke to generate La-Fe-Si (LaFe)13Si) material, so that crosslinking fixed points are formed in the hot strong material dispersed in the coke, and the coke is wrapped in the material, thereby further reducing the reactivity of the coke and improving the strength of the coke after reaction;
5. alumina, high magnesium powder, silicon-aluminum powder, silicon-calcium powder and glucose are used as fillers and filled in micropores on the surface of the coke, so that the production cost is reduced;
6. the triethanolamine is used as an antifreezing agent, and can endow the coke antifreezing agent with a good antifreezing effect, so that the usability of the coke passivator in cold weather is enhanced.
Detailed Description
Examples 1-5 are presented to illustrate the composition of the coke hot strength material. The compositions of examples 1-5 are shown in Table 1.
TABLE 1, EXAMPLES 1-5 TABLE OF HIGH HEAT MATERIAL COMPONENTS OF COKE
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Boron-containing compound per part | 40 | 30 | 33 | 35 | 38 |
| Boric acid, borax and boron oxide | 1∶1∶3 | 1∶1∶1 | 1∶1∶2 | 1∶3∶2 | 1∶2∶1 |
| Silicon dioxide per part | 15 | 10 | 12 | 13 | 14 |
| Titanium dioxide per part | 10 | 8 | 6 | 5 | 7 |
| Alumina per part | 5 | 4 | 3 | 5 | 4 |
| Ferroferric oxide per part | 5 | 4 | 3 | 4 | 5 |
| Lanthanum chloride per part | 1 | 0.8 | 0.5 | 0.8 | 1 |
| High magnesium powder/portion | 30 | 20 | 22 | 25 | 27 |
| Silicon-aluminum powder/part | 10 | 5 | 8 | 7 | 6 |
| Silicon calcium powder/portion | 5 | 10 | 7 | 8 | 9 |
| Glucose/portion | 5 | 4 | 3 | 1 | 2 |
| Triethanolamine per part | 3 | 2 | 1 | 1 | 2 |
Note: the unit "parts" means parts by weight
The process for preparing the coke hot strength material of examples 1-5 is described in detail below with reference to Table 1.
A preparation process of coke hot strength auxiliary materials comprises the following steps:
the method comprises the following steps: mixing boric acid, borax and boron oxide according to a weight ratio to obtain a boron-containing compound;
step two: weighing the boron-containing compound, the silicon dioxide, the titanium dioxide, the aluminum oxide, the ferroferric oxide, the lanthanum chloride, the high magnesium powder, the silicon-aluminum powder, the silicon-calcium powder, the glucose and the triethanolamine according to the weight parts, and uniformly mixing.
The method of using the coke thermal strength auxiliary materials of examples 1 to 5 will be described in detail below.
A method for using a coke passivator, comprising the steps of:
step 1: adding a coke passivator into water, stirring for 5min, and preparing a coke passivator solution with the concentration of 5%;
step 2: uniformly spraying the coke passivator solution on the surface of the coke, wherein the spraying amount is 10% of the mass of the coke, and storing the coke for 1h after the spraying is finished.
Reactivity and post-reaction strength test
Step 1: the reactivity and the strength after reaction of the coke sprayed with the hot auxiliary materials of the coke of the examples 1 to 5 are tested by referring to GB/T4000-1996 test method for the reactivity and the strength after reaction of the coke, and the coke not sprayed with the hot auxiliary materials of the coke of the examples 1 to 5 is simultaneously tested as a comparison example;
step 2: after repeating step 1 4 times, the reactivity and post-reaction strength of the obtained 5 times coke were averaged.
TABLE 2 Coke reactivity and Strength test record Table after reaction
From table 2, the following conclusions can be drawn:
1. comparing the control example with the examples 1-5, the reactivity of the coke sprayed with the coke thermal strength auxiliary materials of the examples 1-5 is far lower than that of the control example, and the strength after reaction is far higher than that of the control example;
2. comparing examples 1-5, spray example 3 was less reactive than the other examples and had higher post-reaction strength than the other examples.
Mechanical Strength test
The mechanical strength of the cokes of examples 1 to 5, to which the thermally strong auxiliary materials for coke were sprayed, was measured with reference to GB/T2006-2008, "method for measuring mechanical strength of coke", and the cokes to which the coke passivators of examples 1 to 5 were not sprayed were measured as a control example.
TABLE 3 Coke mechanical Strength test chart
| Comparative example | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| M40/％ | 82.1 | 84.6 | 84.7 | 84.9 | 84.8 | 84.7 |
| M10/％ | 6.9 | 5.3 | 5.1 | 5.0 | 5.2 | 5.4 |
Note: m40The larger the surface crush strength; m10Smaller indicates higher abrasion resistance.
From table 3 the following conclusions can be drawn:
1. compared with the comparative examples and comparative examples 1-5, the crushing strength and the wear resistance strength of the coke sprayed with the coke hot strength auxiliary materials of examples 1-5 are higher, namely the mechanical strength of the coke sprayed with the coke hot strength auxiliary materials of examples 1-5 is higher;
2. in comparison with comparative examples 1 to 5, the coke sprayed with the coke hot strength adjuvant of example 3 had higher crushing strength and abrasion resistance than the coke sprayed with the coke hot strength adjuvant of other examples, i.e., example 3.
Comparative example 1
Example 4 of the chinese patent publication No. CN101654634A was selected as comparative example 1.
The coke sprayed with the coke thermal strength auxiliary material of example 3 and the coke sprayed with the coke deactivator of comparative example 1 were tested with reference to the reactivity and strength test procedure after reaction, and the coke sprayed with the coke thermal strength auxiliary material of example 3 and the coke deactivator of comparative example 1 were tested with reference to the mechanical strength test procedure.
TABLE 4, COMPARATIVE EXAMPLE 1 AND EXAMPLE 3 COMPARATIVE TEST RECORDING TABLE
| Example 3 | Comparative example 1 | |
| Reactivity/% | 21.49 | 28.19 |
| Post-reaction intensity/%) | 72.04 | 64.28 |
| M40/％ | 84.9 | 83.2 |
| M10/％ | 5.0 | 6.6 |
Note: the larger the M40, the higher the surface crush strength; the smaller M10 indicates the higher abrasion resistance.
From table 4, it can be concluded that the coke sprayed with the coke hot strength additive of example 3 is lower in reactivity, higher in strength after reaction, and higher in crushing strength and abrasion resistance, compared to comparative example 1. Therefore, the invention can obviously reduce the reactivity of the coke and improve the strength and mechanical strength of the coke after reaction.
Comparative example 2
Comparative example 2 differs from example 3 in that ferroferric oxide is removed, and the rest is the same as example 3.
Comparative example 3
Comparative example 3 differs from example 3 in that lanthanum chloride is removed, and the rest is the same as example 3.
Comparative example 4
Comparative example 4 differs from example 3 in that ferroferric oxide and lanthanum chloride are removed simultaneously, and the rest is the same as example 3.
The coke sprayed with the coke hot strength auxiliary material of example 3 and the cokes respectively sprayed with the coke hot strength auxiliary materials of comparative examples 2 to 4 were tested with reference to the reactivity and post-reaction strength test procedures, and the cokes sprayed with the coke hot strength auxiliary material of example 3 and the cokes respectively sprayed with the coke hot strength auxiliary materials of comparative examples 2 to 4 were tested with reference to the mechanical strength test procedures.
TABLE 5, EXAMPLE 3 and COMPARATIVE EXAMPLES 2-4 COMPARATIVE TEST RECORDING TABLE
| Example 3 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Reactivity/% | 21.49 | 25.74 | 25.89 | 26.12 |
| Post-reaction intensity/%) | 72.04 | 66.96 | 67.01 | 66.34 |
| M40/％ | 84.9 | 83.6 | 83.5 | 83.4 |
| M10/％ | 5.0 | 6.0 | 6.3 | 6.4 |
Note: the larger the M40, the higher the surface crush strength; the smaller M10 indicates the higher abrasion resistance.
From table 5, the following conclusions can be drawn:
the coke sprayed with the coke thermal strength auxiliary material of example 3 is superior to the coke sprayed with the coke passivator of comparative example 2 and comparative example 3 respectively in the indexes of reactivity, strength after reaction, crushing strength, abrasion resistance and the like.
The coke sprayed with the coke deactivator of comparative example 4 was inferior to the coke sprayed with the coke deactivators of comparative example 2 and comparative example 3, respectively, in both reactivity and post-reaction strength. Therefore, both ferroferric oxide and lanthanum chloride can reduce the reactivity and improve the strength after reaction. However, the combination of the ferroferric oxide and the lanthanum chloride causes the reduction degree of the reactivity and the improvement degree of the strength after the reaction to be larger than the sum of the reduction degree of the reactivity and the improvement degree of the strength after the reaction caused by the independent use of the ferroferric oxide and the lanthanum chloride. Therefore, the ferroferric oxide and the lanthanum chloride can generate a compounding effect in the invention, and the reduction degree of the reactivity and the improvement degree of the strength after the reaction are increased.
The coke sprayed with the coke deactivator of comparative example 4 was inferior to the coke sprayed with the coke deactivator of comparative example 2 in both crushing strength and abrasion resistance, but was closer to the coke sprayed with the coke deactivator of comparative example 3. Therefore, the ferroferric oxide hardly influences the crushing strength and the wear-resisting strength, and the lanthanum chloride can improve the crushing strength and the wear-resisting strength. However, the combination of ferroferric oxide and lanthanum chloride leads to the improvement of crushing strength and wear resistance strength which is greater than the improvement of crushing strength and wear resistance strength caused by the single use of lanthanum chloride. Therefore, ferroferric oxide and lanthanum chloride can generate a compounding effect in the invention, and the crushing strength and the wear resistance are improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (6)
1. The coke hot strength auxiliary material comprises the following components in parts by weight:
30-40 parts of boron-containing compound
10-15 parts of silicon dioxide
5-10 parts of titanium dioxide
3-5 parts of aluminum oxide
3-5 parts of ferroferric oxide
0.5-1 part of lanthanum chloride
The boron-containing compound comprises boric acid, borax and boron oxide, wherein the boric acid comprises the following components in percentage by weight: borax: boron oxide =1:1-3: 1-3.
2. The coke hot strength additive according to claim 1, wherein the coke hot strength additive further comprises 20-30 parts by weight of high magnesium powder.
3. The coke thermal strength auxiliary material according to claim 1, further comprising 5-10 parts by weight of silicon-aluminum powder and 5-10 parts by weight of silicon-calcium powder.
4. The coke heat intensity auxiliary material of claim 1, wherein the coke heat intensity auxiliary material further comprises 1-5 parts by weight of glucose.
5. The coke heat intensity auxiliary material of claim 1, wherein the coke heat intensity auxiliary material further comprises 1-3 parts by weight of triethanolamine.
6. A preparation process of coke hot strength auxiliary materials is characterized by comprising the following steps:
the method comprises the following steps: mixing boric acid, borax and boron oxide according to the weight ratio of boric acid: borax: mixing boron oxide =1:1-3:1-3 to obtain a boron-containing compound;
step two: weighing 30-40 parts of boron-containing compound, 10-15 parts of silicon dioxide, 5-10 parts of titanium dioxide, 3-5 parts of aluminum oxide, 3-5 parts of ferroferric oxide, 0.5-1 part of lanthanum chloride, 20-30 parts of high magnesium powder, 5-10 parts of silicon-aluminum powder, 5-10 parts of calcium silicate powder, 1-5 parts of glucose and 1-3 parts of triethanolamine according to parts by weight, and uniformly mixing.
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