CN112725050B - Preparation method of semi-coke pellets - Google Patents
Preparation method of semi-coke pellets Download PDFInfo
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- CN112725050B CN112725050B CN202011427251.XA CN202011427251A CN112725050B CN 112725050 B CN112725050 B CN 112725050B CN 202011427251 A CN202011427251 A CN 202011427251A CN 112725050 B CN112725050 B CN 112725050B
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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
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/24—Mixing, stirring of fuel components
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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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/32—Molding or moulds
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Abstract
The invention discloses a preparation method of semi-coke pellets, which comprises the following steps: uniformly mixing the semi-coke powder, the additive and the binder, and adding a certain mass of water to ensure that the water content of the mixed material is between 12 and 20 percent; and conveying the mixed material to a high-pressure ball press for pelletizing, conveying the pelletized pellets into a vertical drying furnace for drying, and finally carbonizing and cooling the dried mixed pellets at high temperature to obtain the semi-coke pellets. The semi-coke pellet prepared by the method has high low-temperature compressive strength and high-temperature compressive strength, meets the requirements of low-temperature conveying and high-temperature calcining, ensures that the pellet is kept in a block shape in a high-temperature state, fully utilizes semi-coke powder, carbon material fly ash and powdered coal which cannot be utilized in production, and achieves the purpose of efficiently utilizing waste.
Description
Technical Field
The invention belongs to the technical field of carbon material preparation, and particularly relates to a preparation method of semi-coke pellets.
Background
Semi-coke, also called semi-coke, is a novel carbon material obtained by low-temperature dry distillation of high-quality Jurassic coal blocks produced in Shenfu, Yulin and Dongsheng coal fields. The semi-coke has poor compressive strength and crushing resistance, and can generate certain semi-coke powder in the transportation and use processes, so that the use performance of the semi-coke is greatly reduced, the semi-coke can only be used for electric coal or civil low-grade fuel, resources are wasted, and economic benefits are reduced.
At present, semi-coke powder is difficult to be used in the fields of metallurgy and calcium carbide, and is more difficult to form than pulverized coal and coke powder, inorganic binder, organic binder or composite binder is generally adopted to prepare formed coke in the market at present, low-temperature conveying and high-temperature pressure resistance are required to be met, the formed coke is not broken, low-temperature compressive strength basically can meet conveying requirements, but the compressive strength after high temperature is generally low, the compressive strength after high temperature is not more than 1.5MPa, and 2m falls naturally for 1 time to form the fabric. The civil briquette has low requirement on high-temperature compressive strength, and the existing binder can basically meet the requirement. Therefore, the provision of the high-quality semi-coke pellets which can be reused in the fields of metallurgy and calcium carbide has important significance.
Disclosure of Invention
The invention aims to provide a preparation method of semi-coke pellets, which solves the problem of low high-temperature compressive strength of semi-coke pellets prepared in the prior art.
The technical scheme adopted by the invention is that the preparation method of the semi-coke pellet specifically comprises the following steps: uniformly mixing the semi-coke powder, the additive and the binder, and adding a certain mass of water to ensure that the water content of the mixed material is between 12 and 20 percent; and conveying the mixed materials to a high-pressure ball press for pelletizing, conveying the pelletized pellets into a vertical drying furnace, and drying to obtain the semi-coke pellets.
The present invention is also characterized in that,
the semi-finished blue charcoal powder is dry semi-finished blue charcoal powder and wet semi-finished blue charcoal powder, the moisture content of the dry semi-finished blue charcoal powder is between 0.6 and 1.5 percent, the moisture content of the wet semi-finished blue charcoal powder is between 10 and 19 percent, the particle diameters of the dry semi-finished blue charcoal powder and the wet semi-finished blue charcoal powder are both less than 4mm, and the particles below 1mm account for 12 to 28 percent.
The additive is one or two of carbon dedusting ash and coal powder; the mass of the additive is not more than 25% of that of the semi-coke powder, and the particle sizes of the carbon material dust removal ash and the coal dust are both less than 0.5 mm.
The binder consists of a class A binder and a class B binder; the A-type binder is any one or two of modified corn starch and pregelatinized starch; the B-type binder is one or more of sodium humate, saponified clay and borax.
The mass of the binder is 2-15% of the mass of the semi-coke powder, the mass of the modified corn starch is 1-3% of the mass of the semi-coke powder, the mass of the pre-gelatinized starch is 2-4% of the mass of the semi-coke powder, the mass of the sodium humate is 2-5% of the mass of the semi-coke powder, the mass of the saponified clay is 3-6% of the mass of the semi-coke powder, and the mass of the borax is 0.4-1% of the mass of the semi-coke powder.
When the balls are manufactured in a high-pressure ball press, the high-pressure sample manufacturing pressure is 15MPa to 30 MPa; the ball press machine is provided with a prepressing device; the pelletizing rate of the semi-coke pellets is more than 88 percent, and the pellet completeness rate is more than 90 percent.
The drying temperature is 135-180 ℃, the drying time is 0.5-1 h, the compression strength of the semi-coke pellet is detected to be not less than 6.5MPa, the anti-falling frequency is more than 8 times, and the fragments are blocky; carbonizing the semi-coke pellets at 900 ℃ for 30min, wherein the compression strength of the cooled pellets is not less than 3.1MPa, the falling resistance times are more than 2 times, and the crushed blocks are blocky. The number of fall resistance was expressed as the number of complete breakings of the pellets falling freely at a height of 2 m.
During mixing, the specific process is as follows: the semi-coke powder, the additive and the binder are respectively metered and then conveyed to a first-stage double-shaft stirrer through a belt to be uniformly stirred, and then are sprayed with water to be stirred and mixed in a second-stage double-shaft stirrer, and then are extruded and mixed in an edge runner mill, and finally are stirred and mixed in a third-stage double-shaft stirrer. And uniformly mixing the borax in the form of particles with the materials discharged from the edge runner mill in a three-stage double-shaft stirrer.
The prepared semi-coke pellets can meet the production and use requirements of calcium carbide, the semi-coke pellets can replace 45% of the original semi-coke blocks at most, and the whole process adopts belt conveying.
The beneficial effect of the invention is that,
the semi-coke pellet prepared by the method has high low-temperature compressive strength and high-temperature compressive strength, meets the requirements of low-temperature conveying and high-temperature calcining, ensures that the pellet is kept in a block shape in a high-temperature state, fully utilizes semi-coke powder, carbon material fly ash and powdered coal which cannot be utilized in production, and achieves the purpose of efficiently utilizing waste.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: uniformly mixing the semi-coke powder, the additive and the binder by a double-shaft mixer, and adding a certain mass of water to ensure that the water content of the mixed material is between 12 and 20 percent; conveying the mixed materials to a high-pressure ball press for ball making, wherein the high-pressure sample making pressure is 15-30 MPa, and the ball press is provided with a prepressing device; the pelletizing rate of the semi-coke pellets is more than 88 percent, and the pellet completeness rate is more than 90 percent.
Conveying the prepared pellets into a vertical drying furnace for drying, and burning and drying by adopting coal gas or calcium carbide tail gas at the drying temperature of 135-180 ℃ for 0.5-1 h to obtain semi-coke pellets;
the semi-coke powder is metered by a belt scale, the carbon material dedusting ash and the binder are metered by a spiral conveying metering scale, and water is sprayed in by a liquid metering pump in an atomizing mode;
the semi-finished blue charcoal powder is dry semi-finished blue charcoal powder and wet semi-finished blue charcoal powder, the moisture content of the dry semi-finished blue charcoal powder is between 0.6 and 1.5 percent, the moisture content of the wet semi-finished blue charcoal powder is between 10 and 19 percent, and the comprehensive moisture is ensured to be between 12 and 20 percent. The particle diameters of the dry blue-charcoal powder and the wet blue-charcoal powder are both less than 4mm, wherein the particles below 1mm account for 12-28%.
The additive is one or two of carbon dedusting ash and coal powder; the particle sizes of the carbon material dust removal ash and the coal dust are both less than 0.5 mm;
the binder consists of a class A binder and a class B binder; the A-type binder is any one or two of modified corn starch and pregelatinized starch; the B-type binder is any one or more of sodium humate, saponified clay and borax;
the production producer of the modified corn starch is Tanju gold chemical products Co.Ltd;
the production producer of the pregelatinized starch is Tanju gold chemical products Co.Ltd;
the producer of saponified clay is Xinyang Xin Rich fine bentonite Co., Ltd;
the mass of the binder is 2-15% of the mass of the semi-coke powder, the mass of the additive is not more than 25% of the mass of the semi-coke powder, the mass of the modified corn starch is 1-3% of the mass of the semi-coke powder, the mass of the pre-gelatinized starch is 2-4% of the mass of the semi-coke powder, the mass of the sodium humate is 2-5% of the mass of the semi-coke powder, the mass of the saponified clay is 3-6% of the mass of the semi-coke powder, and the mass of the borax is 0.4-1% of the mass of the semi-coke powder;
when the materials are mixed by a double-shaft mixer, the concrete process is as follows: the semi-coke powder, the additive and the binder are respectively metered and then conveyed to a first-stage double-shaft stirrer through a belt to be uniformly stirred, and then are sprayed with water to be stirred and mixed in a second-stage double-shaft stirrer, and then are extruded and mixed in an edge runner mill, and finally are stirred and mixed in a third-stage double-shaft stirrer. And uniformly mixing the borax in the form of particles with the materials discharged from the edge runner mill in a three-stage double-shaft stirrer.
The prepared semi-coke pellets can meet the production and use requirements of calcium carbide, the semi-coke pellets can replace 45% of the original semi-coke blocks at most, and the whole process adopts belt conveying.
Example 1
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: mixing the semi-coke powder, the carbon dedusting ash, the binder and water, and conveying the mixed material to a high-pressure ball machine for ball making, wherein the high-pressure sample making pressure is 15MPa, the ball forming rate of the semi-coke balls is 88 percent, and the ball perfection rate is 90 percent; and conveying the prepared pellets into a vertical drying furnace for drying at the temperature of 135 ℃ for 1h to obtain semi-coke pellets.
The binder is modified corn starch and borax; the mass of the modified corn starch is 3 percent of that of the semi-coke powder, and the mass of the borax is 0.4 percent of that of the semi-coke powder; the mass of the water is 12 percent of that of the semi-coke powder;
the dried semi-coke pellets have the compression strength of 6.5MPa, the anti-falling times are 8 times, and the broken blocks are blocky; after carbonizing the prepared semi-coke pellets at 900 ℃ for 0.5h, the compressive strength of the cooled semi-coke pellets is 3.5MPa, the falling-resistant times are 2 times, and the fragments are blocky.
Example 2
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: mixing semi-coke powder, carbon dedusting ash, a binder and water, and conveying the mixed material to a high-pressure ball machine for ball making, wherein the high-pressure sample making pressure is 20MPa, the ball forming rate of the semi-coke balls is 92%, and the ball perfection rate is 94%; and conveying the prepared pellets into a vertical drying furnace for drying at the drying temperature of 140 ℃ for 0.9h to obtain semi-coke pellets.
The binder is pre-gelatinized starch and borax; the mass of the pregelatinized starch is 4% of that of the semi-coke powder, and the mass of the borax is 0.6% of that of the semi-coke powder; the mass of the carbon material dust removal ash is 14% of that of the semi-coke powder; the mass of the water is 15 percent of that of the semi-coke powder;
the dried semi-coke pellets have the compression strength of 7.2MPa, the falling resistance times are 10 times, and the broken blocks are blocky; after carbonizing the prepared semi-coke pellets at 900 ℃ for 0.5h, the compressive strength of the cooled semi-coke pellets is 3.1MPa, the falling-resistant times are 2 times, and the fragments are blocky.
Example 3
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: mixing semi-coke powder, carbon dedusting ash, coal powder, a binder and water, and conveying the mixed material to a high-pressure ball machine for ball forming, wherein the high-pressure sample forming pressure is 25MPa, the ball forming rate of the semi-coke balls is 91 percent, and the ball perfection rate is 93 percent; and conveying the prepared pellets into a vertical drying furnace for drying at the drying temperature of 150 ℃ for 0.8h to obtain semi-coke pellets.
The binder is modified corn starch, sodium humate and borax; the mass of the modified corn starch is 2 percent of that of the semi-coke powder, the mass of the sodium humate is 4 percent of that of the semi-coke powder, and the mass of the borax is 0.8 percent of that of the semi-coke powder; the mass of the carbon material dust removal ash is 5 percent of that of the semi-coke powder; the mass of the coal powder is 2 percent of that of the semi-coke powder; the mass of the water is 14 percent of that of the semi-coke powder;
the dried semi-coke pellets have the compression strength of 8.0MPa, the falling resistance times are 13 times, and the broken blocks are blocky; after carbonizing the prepared semi-coke pellets at 900 ℃ for 0.5h, the compressive strength of the cooled semi-coke pellets is 4.6MPa, the anti-falling times are 3 times, and the fragments are blocky.
Example 4
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: mixing semi-coke powder, coal powder, a binder and water, and conveying the mixed material to a high-pressure ball press for ball making, wherein the high-pressure sample making pressure is 30MPa, the ball forming rate of the semi-coke balls is 94 percent, and the ball perfection rate is 95 percent; and conveying the prepared pellets into a vertical drying furnace for drying at the drying temperature of 155 ℃ for 0.7h to obtain semi-coke pellets.
The binder is modified corn starch, pregelatinized starch, sodium humate, saponified clay and borax; the mass of the modified corn starch is 1 percent of that of the semi-coke powder, the mass of the pregelatinized starch is 3 percent of that of the semi-coke powder, the mass of the sodium humate is 2 percent of that of the semi-coke powder, the mass of the saponified clay is 4 percent of that of the semi-coke powder, and the mass of the borax is 1.0 percent of that of the semi-coke powder; the mass of the coal powder is 5 percent of that of the semi-coke powder; the mass of the water is 14 percent of that of the semi-coke powder;
the dried semi-coke pellets have the compression strength of 8.4MPa, the anti-falling frequency is 14 times, and the broken blocks are blocky; after the prepared semi-coke pellets are carbonized at 900 ℃ for 0.5h, the compression strength of the cooled semi-coke pellets is 6.8MPa, the anti-falling times are 4 times, and the fragments are blocky.
Example 5
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: mixing semi-coke powder, coal powder, a binder and water, and conveying the mixed material to a high-pressure ball press for ball making, wherein the high-pressure sample making pressure is 27MPa, the ball forming rate of the semi-coke balls is 93 percent, and the ball perfection rate is 94 percent; and conveying the prepared pellets into a vertical drying furnace for drying at the temperature of 160 ℃ for 0.7h to obtain semi-coke pellets.
The binder is modified corn starch, pregelatinized starch, sodium humate and saponified clay; the mass of the modified corn starch is 1.5 percent of that of the semi-coke powder, the mass of the pregelatinized starch is 2 percent of that of the semi-coke powder, the mass of the sodium humate is 3 percent of that of the semi-coke powder, and the mass of the saponified clay is 6 percent of that of the semi-coke powder; the mass of the coal powder is 15 percent of that of the semi-coke powder; the mass of the water is 16 percent of that of the semi-coke powder;
the dried semi-coke pellets have the compression strength of 8.6MPa, the falling resistance times are 15 times, and the broken blocks are blocky; after carbonizing the prepared semi-coke pellets at 900 ℃ for 0.5h, the compressive strength of the cooled semi-coke pellets is 5.8MPa, the anti-falling times are 4 times, and the fragments are blocky.
Example 6
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: mixing semi-coke powder, coal powder, a binder and water, and conveying the mixed material to a high-pressure ball press for ball making, wherein the high-pressure sample making pressure is 23MPa, the ball forming rate of the semi-coke balls is 90 percent, and the ball perfection rate is 93 percent; and conveying the prepared pellets into a vertical drying furnace for drying at the temperature of 170 ℃ for 0.6h to obtain semi-coke pellets.
The binder is modified corn starch, pregelatinized starch, sodium humate and saponified clay; the mass of the modified corn starch is 2.5 percent of that of the semi-coke powder, the mass of the pregelatinized starch is 3 percent of that of the semi-coke powder, the mass of the sodium humate is 5 percent of that of the semi-coke powder, and the mass of the saponified clay is 3 percent of that of the semi-coke powder; the mass of the coal powder is 25 percent of that of the semi-coke powder; the mass of the water is 20 percent of that of the semi-coke powder;
the dried semi-coke pellets have the compression strength of 8.8MPa, the falling resistance times are 17 times, and the broken blocks are blocky; after carbonizing the prepared semi-coke pellets at 900 ℃ for 0.5h, the compressive strength of the cooled semi-coke pellets is 6.2MPa, the anti-falling times are 5 times, and the fragments are blocky.
Example 7
The invention relates to a preparation method of semi-coke pellets, which comprises the following steps: mixing semi-coke powder, carbon dedusting ash, a binder and water, and conveying the mixed material to a high-pressure ball machine for ball making, wherein the high-pressure sample making pressure is 17MPa, the ball forming rate of the semi-coke balls is 89%, and the ball perfection rate is 91%; and conveying the prepared pellets into a vertical drying furnace for drying at 180 ℃ for 0.5h to obtain semi-coke pellets.
The binder is modified corn starch, sodium humate and saponified clay; the mass of the modified corn starch is 2 percent of that of the semi-coke powder, the mass of the sodium humate is 4.5 percent of that of the semi-coke powder, and the mass of the saponified clay is 5 percent of that of the semi-coke powder; the mass of the carbon material dust removal ash is 25 percent of that of the semi-coke powder; the mass of the water is 20 percent of that of the semi-coke powder;
the dried semi-coke pellets have the compression strength of 7.9MPa, the anti-falling times are 12 times, and the broken blocks are blocky; after carbonizing the prepared semi-coke pellets at 900 ℃ for 0.5h, the compressive strength of the cooled semi-coke pellets is 5.5MPa, the anti-falling times are 5 times, and the fragments are blocky.
Claims (1)
1. The preparation method of the semi-coke pellet is characterized by comprising the following steps: uniformly mixing the semi-coke powder, the additive and the binder, and adding a certain mass of water to ensure that the water content of the mixed material is between 12 and 20 percent; conveying the mixed materials to a high-pressure ball press for pelletizing, conveying the pelletized pellets into a vertical drying furnace for drying, and obtaining semi-coke pellets;
the semi-finished product is characterized in that the semi-finished product is dry semi-finished product and wet semi-finished product, the moisture content of the dry semi-finished product is 0.6-1.5%, the moisture content of the wet semi-finished product is 10-19%, the particle sizes of the dry semi-finished product and the wet semi-finished product are both smaller than 4mm, and the particles below 1mm account for 12-28%;
the binder consists of a class A binder and a class B binder; the A-type binder is any one or two of modified corn starch and pregelatinized starch; the B-type binder is any one or more of sodium humate, saponified clay and borax; the mass of the binder is 2-15% of the mass of the semi-coke powder, the mass of the modified corn starch is 1-3% of the mass of the semi-coke powder, the mass of the pre-gelatinized starch is 2-4% of the mass of the semi-coke powder, the mass of the sodium humate is 2-5% of the mass of the semi-coke powder, the mass of the saponified clay is 3-6% of the mass of the semi-coke powder, and the mass of the borax is 0.4-1% of the mass of the semi-coke powder;
during mixing, the specific process is as follows: respectively metering semi-coke powder, an additive and a binder, conveying the semi-coke powder, the additive and the binder to a first-stage double-shaft stirrer through a belt, uniformly stirring, spraying water to the second-stage double-shaft stirrer, stirring and mixing, extruding and mixing in an edge runner mill, and stirring and mixing in a third-stage double-shaft stirrer; uniformly mixing borax in a granular form with the material discharged from the edge runner mill in a three-stage double-shaft mixer;
the additive is one or two of carbon dedusting ash and coal powder; the mass of the additive is not more than 25% of that of the semi-coke powder, and the particle sizes of the carbon material dust removal ash and the coal dust are both less than 0.5 mm;
the semi-coke powder is metered by a belt scale, the carbon material dedusting ash and the binder are metered by a spiral conveying metering scale, and water is sprayed in by a liquid metering pump in an atomizing mode;
when the balls are manufactured in a high-pressure ball press, the high-pressure sample manufacturing pressure is 15MPa to 30 MPa; the drying temperature is 135-180 ℃, and the drying time is 0.5-1 h.
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| CN101792685A (en) * | 2010-02-27 | 2010-08-04 | 丹江口福安运输有限责任公司 | Method for pressing semicoke powder used for producing calcium carbide |
| CN103468944B (en) * | 2013-09-07 | 2015-09-02 | 鞍钢股份有限公司 | Binder for pellets and production method thereof |
| CN104946333B (en) * | 2015-05-26 | 2017-09-26 | 新疆中泰化学托克逊能化有限公司 | A kind of semi-coke powder forming method and device smelted for calcium carbide |
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| CN106244277A (en) * | 2016-09-09 | 2016-12-21 | 新疆广汇中化能源技术开发有限公司 | The shaped device of raw coke oven gas high-temperature dust removal ash |
| CN106398791A (en) * | 2016-09-30 | 2017-02-15 | 西安科技大学 | Preparation and application methods of high-strength and environment-friendly coal briquette adhesive |
| CN107010627B (en) * | 2017-04-11 | 2020-12-25 | 北京柯林斯达科技发展有限公司 | Method for producing pellet calcium carbide raw material by recycling calcium carbide furnace gas fly ash, semi coke powder and quicklime powder |
| CN107653018A (en) * | 2017-08-28 | 2018-02-02 | 神木县中润商贸有限公司 | A kind of semi-coke pressure ball production line and semi-coke pressure ball production method |
| CN109628189A (en) * | 2018-12-28 | 2019-04-16 | 陕西煤业化工新型能源有限公司 | A kind of moulded coal and preparation method thereof and preparation system |
| CN111607445A (en) * | 2020-04-15 | 2020-09-01 | 新疆吉泰低阶煤利用研究有限责任公司 | Semi-coke powder compression molding method |
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