CN101654634B - Coke passivating agent - Google Patents
Coke passivating agent Download PDFInfo
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- CN101654634B CN101654634B CN 200910169129 CN200910169129A CN101654634B CN 101654634 B CN101654634 B CN 101654634B CN 200910169129 CN200910169129 CN 200910169129 CN 200910169129 A CN200910169129 A CN 200910169129A CN 101654634 B CN101654634 B CN 101654634B
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Abstract
The invention discloses a coke passivating agent. Raw materials of the coke passivating agent comprises the following components in percentage by weight: 1-16 glucose or calcium chloride, 1-45 boron anhydride, 1-15 titanium pigment, 1-10 silicon dioxide, 1-45 anhydrous borax, 1-46 calcium borate and 1-30 barium metaborate. The coke passivating agent can favorably improve the thermal performance and the thermal intensity of coke, inhibit the solution loss reaction of the coke, lower the reactivity of the coke, optimize a form of carbon and reduce the breakage of the coke fed into a furnace. The coke using the coke passivating agent is used for melting iron in a blast furnace and can increase the yield by 1-4 percent and save coke by 8-20 kg/t.iron. The industrialization of the product is beneficial to propelling the adjustment of an energy source industrial structure of China and improving the quality of the coke, strengthens the market competitiveness of a steel enterprise, has realistic meanings on aspects of economy, resources and environments and conforms to a sustainable development strategy.
Description
Technical field
The present invention relates to a kind of material of coking industry, particularly relate to a kind of coke deactivator.
Background technology
The practice of blast furnace big coal injection both at home and abroad shows that the main method of keeping the good ventilation property of blast furnace stock column is to improve the molten damage reactivity of the thermal properties of coke-reduction coke, corresponding raising post-reaction strength.So improving the groundwork of coke quality in recent years concentrates on and improves coke thermal characteristics aspect.
Influence the reactive factor of the molten damage of coke and comprise the carbon microlitic structure of coke-blowhole and air hole structure, air vent wall and inorganic impurity content etc., the coke thermal characteristics that air vent wall is thin, void content is big, catalyst component is many is poor, and efflorescence is serious, influences blast furnace permeability.Blast furnace permeability depends primarily on the coke hot strength, and the reduction of the raising of the post-reaction strength of coke (CSR) and reactivity (CRI) can effectively reduce the amount of powder of coke in the stove.The CSR of coke depends on the coke wear resistance, the higher or surperficial harder coke of abrasion resistance, and reaction zone length is less.Because the gasification of coke begins from the surface to inside, surface hardness is depended in gas infiltration inside, and surface hardness is more high, and gasification reaction is more few.Increase its hardness, optimize the form of carbon and reduce catalyst component content, can prevent that gasification reaction from infiltering the coke depths, it is cracked to reduce coke, improves the blast furnace permeability of stock column, improves the discharging of blast furnace slag iron, makes smooth operation of furnace.The molten reaction to carbon that wherein exists in the coke has species and the form of katalysis widely to be paid attention to by Chinese scholars, and furthers investigate; But the inhibited research of the molten damage reaction of STRENGTH ON COKE is ignored by the people, since the carbonaceous of the air hole structure of coke and air vent wall influences thermal property of coke, then but the carbon structure of STRENGTH ON COKE air hole structure and air vent wall is repaired, and reaches the reduction coke reactivity, improves the purpose of postreaction strength of coke.
Coke deactivator is the material that modification is carried out on the STRENGTH ON COKE surface, and this properties-correcting agent is adsorbed onto coke surface, combines closely with coke-blowhole, stop up pore on the one hand, stop gasification reaction to the diffusion of coke internal layer, suppress molten damage reaction, increase its abrasion resistance and wear resistance; Can combine closely with carbon on the other hand, form carbide, still exist after this carbide reaction, STRENGTH ON COKE plays negative catalysis, suppresses coke and catalyst component generation positive catalysis, increases surface hardness, reduces coke reactivity.
The development of coke deactivator and application are to have most important theories meaning and real world applications meaning as a kind of method of improving the coke thermal characteristics to the interaction mechanism of inquiring into coke deactivator and coke.Using coke deactivator can smelt iron with relatively poor coke, reduces coke reactivity significantly, improves post-reaction strength, having very realistic meanings aspect economy, the resource environment, meets the strategy of sustainable development.
Coke deactivator is mainly used in coke-oven plant, the iron work of steel industry, and it is burnt to reach joint, increases the purpose of iron.For the good coke of refining, can effectively reduce CRI behind the sprinkling coke deactivator, improve CSR.In iron manufacturing process, the coke that use is sprayed behind the coke deactivator can effectively improve the blast-furnace coke load, improves the coal powder injection ratio, increases iron, falls Jiao, thereby reduce production costs, and increases economic efficiency.
Along with the maximization of blast furnace and the raising of combustion intensity, the specification of quality of blast furnace STRENGTH ON COKE is more and more higher, and the coking coal quality has downtrending year by year, bigger fluctuation appears in the coal of coking coal, quality, the coke quality of producing is difficult to satisfy the large blast furnace strengthening smelting, further improves the requirement of coal powder injection ratio, and the fewer and feweri and coke quality of high-quality caking coal requires more and more higher contradiction serious day by day.Use coke deactivator that coke quality is significantly improved, the supporting role of coke skeleton is strengthened, guaranteed smooth operation of furnace, damping down and air port scaling loss reduce, and coke ratio reduces, and output increases, the capacity factor of a blast furnace increases, and converter life improves, and the production economic benefit of blast furnace obviously improves.Existing coke deactivator cost height, the proportioning complexity.
Summary of the invention
Be directed to this, the objective of the invention is to, a kind of coke deactivator is provided, prescription is simple, and cost of manufacture is low.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of coke deactivator, and the raw material of this coke deactivator comprises the component of following portions by weight:
Glucose or calcium chloride 1～16 boric anhydride 1～45
Titanium dioxide 1～15 silica 1～10
Borax pentahydrate 1～45 lime borate 1～46
Barium metaborate 1～30.
Preferably, the raw material of this coke deactivator comprises the component of following portions by weight:
Glucose and calcium chloride 1～16 boric anhydride 1～45
Titanium dioxide 1～15 silica 1～10
Borax pentahydrate 1～45 lime borate 1～46
Barium metaborate 1～30.
Preferably, also to comprise parts by weight be 5～17 boric acid to this coke deactivator.
Preferably, also to comprise parts by weight be 1～15 antimonous oxide to this coke deactivator.
Preferably, the raw material of this coke deactivator is made by the component of following portions by weight:
Calcium chloride 1 silica 1 titanium dioxide 3
Boric anhydride 25 Borax pentahydrates 20 lime borates 30
Barium metaborate 3 boric acid 17.
Preferably, the raw material of this coke deactivator is made by the component of following portions by weight:
Glucose 2 silicon-dioxide 3 titanium dioxides 9
Boric anhydride 12 Borax pentahydrates 25 lime borates 35
Antimonous oxide 1 barium metaborate 8 boric acid 5.
Preferably, the raw material of this coke deactivator is made by the component of following portions by weight:
Calcium chloride 1 silicon-dioxide 2 titanium dioxides 2
Boric anhydride 18 Borax pentahydrates 15 lime borates 46
Antimonous oxide 1 barium metaborate 1 boric acid 14.
Preferably, the raw material of this coke deactivator is made by the component of following portions by weight:
Glucose 1 calcium chloride 1.5 silica 1s
Titanium dioxide 14 boric anhydrides 36 Borax pentahydrates 39
Lime borate 5 antimonous oxides 1 barium metaborate 1.5.
Compared with prior art, coke deactivator of the present invention can well improve the coke thermal characteristics, suppresses the molten damage of coke and reacts, reduces its reactivity, increases the form of its hot strength, optimization carbon, and the coke that minimizing is gone into behind the stove is cracked.Use the coke of coke deactivator to be used for blast furnace ironmaking, can increase production 1%～4%, save coke 8～20kg/t. iron.Implement the industrialization of this product, be conducive to promote the adjustment of China's energy industry structure, be conducive to improve coke quality, strengthen the market competitiveness of iron and steel enterprise, having very realistic meanings aspect economy, the resource environment, meet the strategy of sustainable development.
Embodiment
Describe the present invention below in conjunction with specific embodiment, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.
Embodiment 1
A kind of making processes of coke deactivator is as follows:
(1) preparation passivator: take by weighing glucose 1%, calcium chloride 1.5%, silica 1 %, titanium dioxide 14%, boric anhydride 36%, Borax pentahydrate 39%, lime borate 5%, antimonous oxide 1%, barium metaborate 1.5%.
(2) preparation passivator solution: get the domestic water under the normal temperature, add passivator, stirred rapidly 1～10 minute, the concentration of preparation passivator solution is 3～15%.
(3) be sprayed at coke surface equably preparing passivator solution, the sprinkling amount is 2～12% of coke quality.Coke is deposited 0.5～5 hour then.
(4) reactivity and the post-reaction strength that the coke of handling well is carried out coke measured (carrying out with reference to the GB/T4000-1996 standard).
Embodiment 2
A kind of making processes of coke deactivator is as follows:
(1) preparation passivator: take by weighing calcium chloride 1%, silica 1 %, titanium dioxide 3%, boric anhydride 25%, Borax pentahydrate 20%, lime borate 30%, barium metaborate 3%, boric acid 17%.
The step of as follows embodiment 1 (2), (3) and (4).
Embodiment 3
A kind of making processes of coke deactivator is as follows:
(1) preparation passivator: take by weighing glucose 2%, boric acid 5%, silicon-dioxide 3%, titanium dioxide 9%, boric anhydride 12%, Borax pentahydrate 25%, lime borate 35%, antimonous oxide 1%, barium metaborate 8%.
(2) preparation passivator solution: get the domestic water under the normal temperature, be heated to 30～78 degree, add purifying agent then, stirred rapidly 1～10 minute, the concentration of preparation passivator solution is 3～15%.
The step of as follows embodiment 1 (3) (4).
Embodiment 4
A kind of making processes of coke deactivator is as follows:
(1) preparation passivator: take by weighing calcium chloride 1%, silicon-dioxide 2%, titanium dioxide 2%, boric anhydride 18%, Borax pentahydrate 15%, lime borate 46%, boric acid 14%, antimonous oxide 1%, barium metaborate 1%.
The step of as follows embodiment 3 (2), (3) and (4).
Application test
Above-described embodiment by coke deactivator prescription requirement preparation passivator, is ground mixing, add above-mentioned properties-correcting agent in water temperature is 20 ℃～85 ℃ coke quenching water, and stirs with 50～60 rev/mins stirring velocity, making strength of solution is 1%～11.0%; By spray appliance when the quenching or coke go into the stokehold and sprayed passivator solution 1～5 minute.
The coke deactivator that adopts above-described embodiment to make sprays coke, and check result is respectively as following table; (following result is to be example with Sichuan Da Zhou Iron And Steel Company coke, and the spray solution amount is 8%)
The experiment effect of embodiment 1:
| Sample | Passivator concentration/% | Burnt sample weight/g | A coke number (grain) | Reaction back weight/g | Behind the rotary drum＞10mm/g | CRI/％ | CSR/％ |
| Blank sample | 0 | 200 | 49 | 122 | 59.2 | 39.00 | 48.52 |
| Passivator treatment samples 1 | 5 | 200 | 50 | 130.9 | 68.97 | 34.55 | 52.69 |
| Passivator treatment samples 2 | 7 | 200 | 51 | 142.31 | 87.12 | 28.85 | 61.22 |
| Passivator treatment samples 3 | 9 | 200 | 50 | 139.3 | 84.96 | 30.35 | 60.99 |
Embodiment 2 experiment effects:
| Sample | Passivator concentration/% | Burnt sample weight/g | A coke number (grain) | Reaction back weight/g | Behind the rotary drum＞10mm/g | CRI /％ | CSR /％ |
| Blank sample | 0 | 200 | 51 | 125 | 58.3 | 37.50 | 46.64 |
| Passivator treatment samples 1 | 5 | 200 | 49 | 128.8 | 67.5 | 35.60 | 52.41 |
| Passivator treatment samples 2 | 7 | 200 | 50 | 140.9 | 88.5 | 29.55 | 62.81 |
| Passivator treatment samples 3 | 9 | 200 | 49 | 137.26 | 87.95 | 31.37 | 64.08 |
Embodiment 3 experiment effects:
| Sample | Passivator concentration/% | Burnt sample weight/g | A coke number (grain) | Reaction back weight/g | Behind the rotary drum＞10mm/g | CRI /％ | CSR /％ |
| Blank sample | 0 | 200 | 50 | 124 | 59.3 | 38.00 | 47.82 |
| Passivator treatment samples 1 | 5 | 200 | 52 | 129 | 68.1 | 35.50 | 52.79 |
| Passivator treatment samples 2 | 7 | 200 | 50 | 142 | 89 | 29.00 | 62.68 |
| Passivator treatment samples 3 | 9 | 200 | 51 | 141 | 88 | 29.50 | 62.41 |
Embodiment 4 experiment effects:
| Sample | Passivator concentration/% | Burnt sample weight/g | A coke number (grain) | Reaction back weight/g | Behind the rotary drum＞10mm/g | CRI /％ | CSR /％ |
| Blank sample | 0 | 200 | 48 | 121 | 58.65 | 39.50 | 48.47 |
| Passivator treatment samples 1 | 5 | 200 | 51 | 126 | 67 | 37.00 | 53.17 |
| Passivator treatment samples 2 | 7 | 200 | 50 | 141.55 | 90 | 29.23 | 63.58 |
| Passivator treatment samples 3 | 9 | 200 | 49 | 142.5 | 91.2 | 28.75 | 64.00 |
By above data as can be seen, after coke sprayed coke deactivator solution, CRI can reduce about 10, and CSR can improve about 8%.Coke after the sprinkling is used for blast furnace ironmaking, can increase production 1%～4%, saves coke 8～20kg/t. iron.Thereby reduced ironmaking cost, improved conditions of blast furnace, strengthened the quality of coke, reduced the consumption of ironmaking coke, reached the purpose of volume increase energy-conservation of consumption reduction.
Embodiment 5
A kind of making processes of coke deactivator is as follows:
(1) by following parts by weight preparation passivator: take by weighing calcium chloride 1, silica 10, titanium dioxide 1, boric anhydride 45, Borax pentahydrate 1, lime borate 46, boric acid 5, antimonous oxide 15, barium metaborate 1.
The step of as follows embodiment 3 (2), (3) and (4).
Embodiment 6
A kind of making processes of coke deactivator is as follows:
(1) by following parts by weight preparation passivator: take by weighing glucose 16, silica 1, titanium dioxide 15, boric anhydride 1, Borax pentahydrate 45, lime borate 1, boric acid 17, antimonous oxide 1, barium metaborate 30.
The step of as follows embodiment 3 (2), (3) and (4).
Embodiment 7
A kind of making processes of coke deactivator is as follows:
(1) preparation passivator: take by weighing glucose 0.8, calcium chloride 0.2, silica 10, titanium dioxide 1, boric anhydride 45, Borax pentahydrate 1, lime borate 46, barium metaborate 1, antimonous oxide 1.
The step of as follows embodiment 1 (2), (3) and (4).
Embodiment 8
A kind of making processes of coke deactivator is as follows:
(1) preparation passivator: take by weighing glucose 8, calcium chloride 8, silica 1, titanium dioxide 15, boric anhydride 1, Borax pentahydrate 45, lime borate 1, barium metaborate 30, antimonous oxide 15.
The step of as follows embodiment 1 (2), (3) and (4).
It below only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. coke deactivator, it is characterized in that: the raw material of this coke deactivator comprises the component of following portions by weight:
2. coke deactivator according to claim 1 is characterized in that: it is 5～17 boric acid that this coke deactivator also comprises parts by weight.
3. coke deactivator according to claim 1 is characterized in that: it is 1～15 antimonous oxide that this coke deactivator also comprises parts by weight.
4. coke deactivator according to claim 3, it is characterized in that: the raw material of this coke deactivator is made by the component of following portions by weight:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910169129 CN101654634B (en) | 2009-09-09 | 2009-09-09 | Coke passivating agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910169129 CN101654634B (en) | 2009-09-09 | 2009-09-09 | Coke passivating agent |
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| CN101654634A CN101654634A (en) | 2010-02-24 |
| CN101654634B true CN101654634B (en) | 2013-07-10 |
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| CN 200910169129 Expired - Fee Related CN101654634B (en) | 2009-09-09 | 2009-09-09 | Coke passivating agent |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041129B (en) * | 2010-12-02 | 2015-11-25 | 中国科学院过程工程研究所 | A kind of comprise micro-additive coke deactivator and preparation and using method |
| CN102533301B (en) * | 2012-01-13 | 2013-10-30 | 曹金贵 | Coking coal modifier |
| CN102839033B (en) * | 2012-08-27 | 2013-10-23 | 中南大学 | Biomass fuel passivation method and application of passivation products in iron ore sintering |
| CN104152210B (en) * | 2014-09-02 | 2016-06-08 | 河南炬能能源科技有限公司 | A kind of coke reinforced solution |
| CN109022098B (en) * | 2018-08-17 | 2020-08-28 | 宁波敬业控股集团有限公司 | Coke passivator and preparation method thereof |
| CN112899052B (en) * | 2021-01-21 | 2022-01-25 | 重庆大学 | Hydrogen inhibitor and method for producing coke by adding large-proportion high-volatility bituminous coal |
| CN114525161B (en) * | 2022-03-18 | 2023-08-01 | 宁波中科远东催化工程技术有限公司 | Coke passivating agent and preparation method thereof |
| CN114525160B (en) * | 2022-03-18 | 2023-08-01 | 宁波中科远东催化工程技术有限公司 | Coke heat strong auxiliary material and preparation process thereof |
| CN115198042B (en) * | 2022-07-19 | 2023-06-02 | 德龙钢铁有限公司 | Material distribution method of blast furnace coke |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6024863A (en) * | 1998-08-17 | 2000-02-15 | Mobil Oil Corporation | Metal passivation for anode grade petroleum coke |
| CN1392223A (en) * | 2002-04-30 | 2003-01-22 | 重庆大学 | Coke modifying process |
| CN1730628A (en) * | 2005-08-15 | 2006-02-08 | 安阳钢铁集团有限责任公司 | Coke passivator and its usage |
-
2009
- 2009-09-09 CN CN 200910169129 patent/CN101654634B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6024863A (en) * | 1998-08-17 | 2000-02-15 | Mobil Oil Corporation | Metal passivation for anode grade petroleum coke |
| CN1392223A (en) * | 2002-04-30 | 2003-01-22 | 重庆大学 | Coke modifying process |
| CN1730628A (en) * | 2005-08-15 | 2006-02-08 | 安阳钢铁集团有限责任公司 | Coke passivator and its usage |
Non-Patent Citations (1)
| Title |
|---|
| 崔平等.焦炭的钝化处理及其机理.《钢铁研究学报》.2007,第19卷(第03期),6-10. * |
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