CN111019728B - Coke ball and production method and application thereof - Google Patents
Coke ball and production method and application thereof Download PDFInfo
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- CN111019728B CN111019728B CN201911370831.7A CN201911370831A CN111019728B CN 111019728 B CN111019728 B CN 111019728B CN 201911370831 A CN201911370831 A CN 201911370831A CN 111019728 B CN111019728 B CN 111019728B
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- coke
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- coke powder
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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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/105—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with a mixture of organic and inorganic binders
Abstract
The invention provides a coke ball and a production method and application thereof. The coke ball of the invention, coke powder and adhesive accounting for 3 to 3.5 percent of the weight of the coke powder are characterized in that: the raw materials of the adhesive comprise, by weight, 10-15 parts of quicklime, 7-12 parts of water, 15-25 parts of bentonite, 3-5 parts of coal tar, 10-15 parts of nitrile rubber, 15-22 parts of methyl methacrylate, 0.5-1.5 parts of methyl cellulose, 3-7 parts of asphaltene and 9-15 parts of ethanol. The coke powder is recycled after pelletizing, so that the thermal stability of the coke balls in the ore smelting furnace is ensured, and the mixing proportion of the coke balls is ensured to reach 30-50%.
Description
The technical field is as follows:
the invention relates to a coke ball and a production method and application thereof, belonging to the technical field of energy utilization.
Background art:
at present, a plurality of enterprises for producing steel, ferrosilicon, calcium carbide and the like in China exist, and one of the main production raw materials of the enterprises is charcoal (coke and semi coke). However, because of the characteristics of the production, the ore-smelting furnace required by the manufacturing enterprises in the above-mentioned industries must ensure the particle size of the carbon material, under this condition, both the carbon material manufacturers and the carbon material users, screen underflow (commonly called coke powder or semi-coke powder, accounting for about 8-15% of qualified carbon material) with a particle size of 3-5mm or less is subjected to the environmental protection and heavy pressure, and meanwhile, a large amount of dust (commonly called coke ash or semi-coke powder) is also generated in the process of manufacturing and drying the carbon material by each enterprise. At present, most enterprises adopt a method of burning for heat extraction or low-cost export to treat the coke powder and the coke ash, and few enterprises also adopt the coke powder and the coke ash pressed balls to produce products such as steel, ferrosilicon, calcium carbide and the like by using an ore-smelting furnace so as to reduce the production cost and reduce the environmental pollution, but the use method is improper, and finally the products fail.
Therefore, it is urgent to ensure the stable production of the submerged arc furnace and the proportional and stable use of the coke balls.
Disclosure of Invention
The invention aims to solve the problems and provides a coke ball and a production method and application thereof, which can ensure the thermal stability of the coke ball in a submerged arc furnace by recycling coke powder after pelletizing so as to ensure that the mixing proportion of the coke ball reaches 30-50%.
The above purpose is realized by the following technical scheme:
the coke ball comprises coke powder and a binder accounting for 3-3.5% of the weight of the coke powder, and is characterized in that: the raw materials of the adhesive comprise, by weight, 10-15 parts of quicklime, 7-12 parts of water, 15-25 parts of bentonite, 3-5 parts of coal tar, 10-15 parts of nitrile rubber, 15-22 parts of methyl methacrylate, 0.5-1.5 parts of methyl cellulose, 3-7 parts of asphaltene and 9-15 parts of ethanol.
The coke ball adopts coke powder or coke ash with the granularity of less than 5 mm.
The particle size of the coke ball is 30-50 mm.
The production method of the coke ball comprises the following steps:
(1) taking 10-15 parts of quicklime by weight, adding 7-12 parts of water for digestion, adding 15-25 parts of bentonite and 3-5 parts of coal tar after digestion, and fully stirring and mixing to form a component A;
(2) taking 10-15 parts of nitrile butadiene rubber, 15-22 parts of methyl methacrylate, 0.5-1.5 parts of methyl cellulose, 3-7 parts of asphaltene and 9-15 parts of ethanol according to parts by weight, adding the materials into a reactor, and stirring the materials for 1.5-2 hours at the temperature of 45-65 ℃ to form a component B;
(3) mixing the component A prepared in the step (1) and the component B prepared in the step (2) into a binder according to the mass ratio of 1:1, adding the binder accounting for 3-3.5% of the weight of the coke powder into the coke powder, granulating into particles of 30-50mm by using a granulator, and finally drying at a low temperature.
The method for adding and applying the coke balls in the ore-smelting furnace comprises the following steps:
(1) the mixing proportion of the coke balls and the main carbon material is that the coke balls account for 30-50% of the total weight;
(2) the gas permeability of the charge level and the blanking balance are ensured by controlling the furnace pressure and the furnace gas temperature of the submerged arc furnace, the furnace pressure of the submerged arc furnace is 12-20P, and the furnace surface temperature is 650-700 ℃;
(3) the stability of the load is ensured by adjusting the operation electrical parameters of the submerged arc furnace;
(4) the product quality is ensured to be not influenced by changing the tapping time and the tapping mode.
The method for adding the coke ball into the submerged arc furnace comprises the following steps of (3): the current is reduced by 10000-15000A on the basis of the rated current, the voltage is improved by 10-20V on the basis of the rated voltage, and the current-voltage ratio of the submerged arc furnace is reduced to 380 from the rated 440.
According to the method for adding the coke balls into the submerged arc furnace, the furnace discharging time and the discharging mode in the step (4) are 80 minutes, the smelting time of each furnace is guaranteed to be more than 40 minutes, meanwhile, each furnace eye must guarantee the continuous furnace discharging time to be more than 10 days, liquid in the furnace forms a fixed flow channel, impurities in the furnace can be conveniently removed in time along with products, therefore, the bottom of the furnace is guaranteed not to be deposited with the impurities, and the service cycle of the submerged arc furnace is prolonged.
Has the advantages that:
compared with the prior art, the invention has the following beneficial effects:
1. due to the reasonable proportion and the process of the adhesive, the produced coke ball has reasonable strength, the compressive strength reaches more than 16MPa, the high-temperature compressive strength reaches more than 8MPa, the coke ball is easy to burn in the using process, the air permeability of a material layer is ensured, solid waste is utilized, and the environment of a production enterprise is ensured not to be secondarily polluted; trial shows that the production cost of a manufacturer can be reduced by 200-700 yuan/ton.
2. The invention does not need to increase any burden or investment of enterprises.
Detailed Description
The present invention will be further illustrated below with reference to specific embodiments, which are to be understood as merely illustrative and not limitative of the scope of the present invention.
The coke ball comprises coke powder and a binder accounting for 3-3.5% of the weight of the coke powder, and is characterized in that: the raw materials of the adhesive comprise, by weight, 10-15 parts of quicklime, 7-12 parts of water, 15-25 parts of bentonite, 3-5 parts of coal tar, 10-15 parts of nitrile rubber, 15-22 parts of methyl methacrylate, 0.5-1.5 parts of methyl cellulose, 3-7 parts of asphaltene and 9-15 parts of ethanol.
The coke ball adopts coke powder or coke ash with the granularity of less than 5 mm.
The particle size of the coke ball is 30-50 mm.
The production method of the coke ball comprises the following steps:
(1) taking 10-15 parts of quicklime by weight, adding 7-12 parts of water for digestion, adding 15-25 parts of bentonite and 3-5 parts of coal tar after digestion, and fully stirring and mixing to form a component A;
(2) taking 10-15 parts of nitrile butadiene rubber, 15-22 parts of methyl methacrylate, 0.5-1.5 parts of methyl cellulose, 3-7 parts of asphaltene and 9-15 parts of ethanol according to parts by weight, adding the materials into a reactor, and stirring the materials for 1.5-2 hours at the temperature of 45-65 ℃ to form a component B;
(3) mixing the component A prepared in the step (1) and the component B prepared in the step (2) into a binder according to the mass ratio of 1:1, adding the binder accounting for 3-3.5% of the weight of the coke powder into the coke powder, granulating into particles of 30-50mm by using a granulator, and finally drying at a low temperature.
The method for adding and applying the coke balls in the ore-smelting furnace comprises the following steps:
(1) the mixing proportion of the coke balls and the main carbon material is that the coke balls account for 30-50% of the total weight;
(2) the gas permeability of the charge level and the blanking balance are ensured by controlling the furnace pressure and the furnace gas temperature of the submerged arc furnace, the furnace pressure of the submerged arc furnace is 12-20P, and the furnace surface temperature is 650-700 ℃;
(3) the stability of the load is ensured by adjusting the operation electrical parameters of the submerged arc furnace;
(4) the product quality is ensured to be not influenced by changing the tapping time and the tapping mode.
The method for adding the coke ball into the submerged arc furnace comprises the following steps of (3): the current is reduced by 10000-15000A on the basis of the rated current, the voltage is improved by 10-20V on the basis of the rated voltage, and the current-voltage ratio of the submerged arc furnace is reduced to 380 from the rated 440.
According to the method for adding the coke balls into the submerged arc furnace, the furnace discharging time and the discharging mode in the step (4) are 80 minutes, the smelting time of each furnace is guaranteed to be more than 40 minutes, meanwhile, each furnace eye must guarantee the continuous furnace discharging time to be more than 10 days, liquid in the furnace forms a fixed flow channel, impurities in the furnace can be conveniently removed in time along with products, therefore, the bottom of the furnace is guaranteed not to be deposited with the impurities, and the service cycle of the submerged arc furnace is prolonged.
The effects of the present invention are further illustrated by the following specific examples and comparative examples:
the materials in the following table are mixed according to parts by weight, the compressive strength is measured by a press machine, the unit is MPa, and the high-temperature compressive strength is measured after the materials are burnt in a muffle furnace at 1000 ℃ under the protection of nitrogen and naturally cooled.
| Water (W) | Stone Ash of | Swelling and swelling Soil for soil | Coal coke Oil | Buna-N Rubber composition | Methyl alkene Acid methyl ester | Methyl fiber Vitamin (vitamin) | Asphalt Quality of food | Ethanol | Compressive strength Degree of rotation | High temperature compressive strength Degree of rotation | |
| Example 1 | 9 | 10 | 16 | 5 | 11 | 22 | 1.2 | 7 | 10 | 19 | 10 |
| Example 2 | 8 | 11 | 19 | 4 | 10 | 17 | 0.5 | 6 | 15 | 16 | 11 |
| Example 3 | 10 | 14 | 25 | 3 | 12 | 19 | 0.9 | 3 | 11 | 21 | 8 |
| Example 4 | 7 | 12 | 21 | 4 | 14 | 15 | 1.1 | 5 | 12 | 17 | 9 |
| Example 5 | 11 | 11 | 18 | 3 | 15 | 16 | 1.3 | 7 | 10 | 22 | 8 |
| Example 6 | 10 | 15 | 22 | 5 | 13 | 18 | 1.5 | 4 | 11 | 16 | 10 |
| Example 7 | 8 | 10 | 24 | 4 | 15 | 21 | 0.7 | 3 | 9 | 18 | 8 |
| Example 8 | 9 | 12 | 15 | 3 | 14 | 19 | 1.4 | 4 | 15 | 20 | 9 |
| Example 9 | 7 | 11 | 19 | 5 | 12 | 17 | 0.6 | 5 | 12 | 18 | 10 |
| Example 10 | 12 | 15 | 17 | 4 | 11 | 18 | 0.5 | 7 | 13 | 17 | 9 |
| Comparative example 1 | 9 | 10 | 16 | 5 | 0 | 0 | 0 | 0 | 0 | 11 | 4 |
| Comparative example 2 | 8 | 11 | 19 | 4 | 0 | 0 | 0 | 0 | 0 | 10 | 3 |
| Comparative example 3 | 10 | 14 | 25 | 3 | 0 | 0 | 0 | 0 | 0 | 9 | 5 |
| Comparative example 4 | 7 | 12 | 21 | 4 | 0 | 0 | 0 | 0 | 0 | 12 | 3 |
| Comparative example 5 | 11 | 11 | 18 | 3 | 0 | 0 | 0 | 0 | 0 | 11 | 4 |
| Comparative example 6 | 0 | 0 | 0 | 0 | 9 | 11 | 22 | 1.2 | 7 | 13 | 5 |
| Comparative example 7 | 0 | 0 | 0 | 0 | 8 | 10 | 17 | 0.5 | 6 | 15 | 6 |
| Comparative example 8 | 0 | 0 | 0 | 0 | 10 | 12 | 19 | 0.9 | 3 | 11 | 4 |
| Comparative example 9 | 0 | 0 | 0 | 0 | 7 | 14 | 15 | 1.1 | 5 | 12 | 5 |
| Comparative example 10 | 0 | 0 | 0 | 0 | 11 | 15 | 16 | 1.3 | 7 | 10 | 7 |
The proportion of the invention is taken as an example, the coke ball is processed according to the method of the invention, meanwhile, the inorganic binder and the coal tar are taken to be matched according to the formulas of the examples 1 to 5 to be used as comparative examples 1 to 5, the coke ball is also processed according to the method of the invention, the organic binder is taken to be used as comparative examples 6 to 10 according to the formula of the example-5, the coke ball is processed according to the method of the invention, and finally, the compression strength and the high-temperature compression strength are measured.
Claims (3)
1. The coke ball comprises coke powder and a binder accounting for 3-3.5% of the weight of the coke powder, and is characterized in that: the raw materials of the adhesive comprise, by weight, 10-15 parts of quicklime, 7-12 parts of water, 15-25 parts of bentonite, 3-5 parts of coal tar, 10-15 parts of nitrile rubber, 15-22 parts of methyl methacrylate, 0.5-1.5 parts of methyl cellulose, 3-7 parts of asphaltene and 9-15 parts of ethanol; the coke powder adopts coke powder or coke ash with the granularity of less than 5 mm; the particle size of the coke ball is 30-50 mm.
2. A method of producing the coke balls of claim 1, wherein: the method comprises the following steps:
(1) taking 10-15 parts of quicklime by weight, adding 7-12 parts of water for digestion, adding 15-25 parts of bentonite and 3-5 parts of coal tar after digestion, and fully stirring and mixing to form a component A;
(2) taking 10-15 parts of nitrile butadiene rubber, 15-22 parts of methyl methacrylate, 0.5-1.5 parts of methyl cellulose, 3-7 parts of asphaltene and 9-15 parts of ethanol according to parts by weight, adding the materials into a reactor, and stirring the materials for 1.5-2 hours at the temperature of 45-65 ℃ to form a component B;
(3) mixing the component A prepared in the step (1) and the component B prepared in the step (2) into a binder according to the mass ratio of 1:1, adding the binder accounting for 3-3.5% of the weight of the coke powder into the coke powder, granulating into particles of 30-50mm by using a granulator, and finally drying at a low temperature.
3. The method for producing coke balls according to claim 2, wherein: and (4) drying at the low temperature of 40-45 ℃ in the step (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547139 | 2019-06-24 | ||
| CN2019105471390 | 2019-06-24 |
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| CN111019728A CN111019728A (en) | 2020-04-17 |
| CN111019728B true CN111019728B (en) | 2020-10-20 |
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| CN101157873A (en) * | 2007-10-10 | 2008-04-09 | 吉林省万邦草业有限公司 | Biological energy source modeling coal and production technique |
| KR101579930B1 (en) * | 2014-12-15 | 2015-12-28 | 이현용 | Manufacturing method of wood pellet for biomass generation using meagre waste wood |
| CN107140640A (en) * | 2017-05-04 | 2017-09-08 | 安徽禹泰科技有限公司 | The method that focal sphere is produced is added in mineral hot furnace |
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