CN111363599A - Novel formed coke adhesive and method for preparing formed coke by using same - Google Patents
Novel formed coke adhesive and method for preparing formed coke by using same Download PDFInfo
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- CN111363599A CN111363599A CN202010295611.9A CN202010295611A CN111363599A CN 111363599 A CN111363599 A CN 111363599A CN 202010295611 A CN202010295611 A CN 202010295611A CN 111363599 A CN111363599 A CN 111363599A
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- adhesive
- formed coke
- coke
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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 application discloses novel formed coke adhesive, including first type adhesive and type two adhesive, first type adhesive includes starch, powdered fiber, type two adhesive includes silica, magnesium oxide, aluminium oxide and water glass, the ratio of first type adhesive with type two adhesive is (1-10): (1-10) the present application also includes a process for making formed coke using the novel formed coke binder. The formed coke produced by the novel formed coke adhesive has higher cold strength and hot strength, higher stability in the transportation and use processes, small influence on the fixed carbon value of the coke particles, better guarantee of the heat value of the formed coke, and better specific resistance to a submerged electrode of an ore heating furnace, so the formed coke prepared by the novel formed coke adhesive has better performance in the use process.
Description
Technical Field
The invention relates to the technical field of formed coke adhesives, in particular to a novel formed coke adhesive and a method for preparing formed coke by the same.
Background
The formed coke (coke powder forming) adhesive is formed by bonding crushed coke powder (coke powder) together, and the formed coke is formed and solidified to replace partial coke for use, so that the formed coke has a powdery or liquid formed coke auxiliary raw material with a specific shape and performance, is powdery or liquid in appearance, and plays an important role in determining the type and quality of the formed coke in the production of the formed coke.
In the using process of the formed coke, the higher the strength of the formed coke is, the more favorable the transportation and the feeding are, and the integrity of the formed coke can be effectively ensured; the content of the fixed carbon is closer to the value of the coke, the quality of the formed coke is better, and the larger the specific resistance is, the better the electrode is placed under the submerged arc furnace; the method is characterized in that the method comprises the following steps of preparing a formed coke adhesive, and preparing a formed coke by using the formed coke adhesive.
Disclosure of Invention
The application provides a novel formed coke adhesive and a method for preparing formed coke by using the same, which solve the problems that the fixed carbon value of coke powder is greatly influenced by the traditional formed coke adhesive, the specific resistance is small and the moisture content is large.
The application provides a novel formed coke adhesive, including first type adhesive and second type adhesive, first type adhesive includes starch, powdered fiber, second type adhesive includes silica, magnesium oxide, aluminium oxide and water glass, the ratio of first type adhesive with the second type adhesive is (1-10): (1-10).
Preferably, said second type of adhesive also comprises coal tar, pitch and wood tar.
Preferably, the ratio of the first type of adhesive to the second type of adhesive is 2: 3.
Preferably, the ratio of the first type of adhesive to the second type of adhesive is 1: 1.
Preferably, the ratio of the first type of adhesive to the second type of adhesive is 3: 2.
A method for preparing formed coke by using a novel formed coke adhesive, which comprises the following steps:
s1, adding the novel formed coke adhesive into the coke powder according to the proportion of 3-6% by a belt scale;
s2, stirring by a stirrer, and introducing steam during stirring;
and S3, pressing the balls by using a pair of rollers, drying the balls by using a vertical drying tower, and sending the dried balls into a finished product bin.
Preferably, the blender is a two-roll blender.
Preferably, the proportion of the novel coke binder is 4%.
Preferably, the specification of the formed coke is 25mm-45 mm.
Preferably, the temperature of the drying tower is 160-180 ℃.
According to the technical scheme, the application provides a novel formed coke adhesive and a method for preparing formed coke, the novel formed coke adhesive consists of two parts, one part is an organic adhesive, the main components comprise starch and fiber, the first type adhesive is a first type adhesive, the second part mainly comprises inorganic matters, the main components comprise silicon micropowder, magnesium oxide, aluminum oxide, water glass or organic coal tar, asphalt and wood tar, the second type adhesive is a second type adhesive, the first type adhesive and the second type adhesive are mixed to obtain the novel formed coke adhesive, the pulverized and filtered coke powder and the novel formed coke adhesive are mixed according to the proportion of 24:1, stirring is carried out under the action of a double-roller stirrer, steam is introduced during the stirring process, after the stirring is finished, the formed coke is pressed into a sphere with the specification of 25mm-45mm by a double-roller ball pressing device, the formed coke passes through a vertical drying tower, drying at 160-180 deg.c.
Compared with the prior art, the invention has the beneficial effects that:
1. the cold strength of the novel formed coke adhesive is over 230 kilograms, the formed coke adhesive is not cracked after being continuously burnt for about 4 to 5 hours at the high temperature of 1200 ℃ by a chain furnace, and the formed coke adhesive has the strength of 30 to 40Kg, is deashed layer by layer at the high temperature and has good thermal stability;
2. the novel formed coke adhesive has small influence on the fixed carbon value of coke powder, the fixed carbon value of the formed coke is similar to that of the coke powder, and the formed coke adhesive has a large heat value;
3. the actual specific resistance of the coke prepared by the novel formed coke adhesive is 1274, the actual specific resistance of the formed coke is 3049, and the larger the specific resistance is, the better the electrode is placed under the submerged arc furnace;
4. the moisture of the traditional coke is generally between 8 and 12 percent, and the moisture of the coke prepared by the novel formed coke adhesive is between 0.7 and 1.5 percent;
5. in the mixing and stirring process, steam is introduced, the novel formed coke adhesive is fully mixed at higher temperature in the stirring process, and the mixing uniformity is improved, so that the quality of the formed coke is improved.
In conclusion, the formed coke produced by the novel formed coke adhesive has higher cold strength and hot strength, higher stability in the transportation and use processes, small influence on the fixed carbon value of the coke particles, and better guarantee of the heat value of the formed coke, and the larger specific resistance is better for the lower electrode of the submerged arc furnace, so the formed coke prepared by the novel formed coke adhesive has better performance in the use process.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic structural diagram of a method for preparing formed coke by using a novel formed coke binder according to the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Example 1
A novel formed coke adhesive comprises a first type adhesive and a second type adhesive, wherein the first type adhesive comprises starch, the second type adhesive comprises silicon dioxide, and the ratio of the first type adhesive to the second type adhesive is 2: 3.
Referring to fig. 1, a method for preparing formed coke using a novel formed coke binder includes the steps of:
s1, adding the novel formed coke adhesive into the coke powder according to the proportion of 4% by a belt scale;
s2, stirring the mixture by a double-roll stirrer, and introducing steam into the mixture during stirring;
s3, pressing the balls by using a pair of rollers to prepare the formed coke with the specification of 25mm-45mm, drying the formed coke at the temperature of 160-180 ℃ in a drying tower, and sending the formed coke into a finished product bin after drying.
According to the invention, the novel formed coke adhesive is added with 4 percent according to the proportion of 2:3 to obtain the formed coke with strength; the cold strength can reach more than 230Kg, can be made into 7 meters free falling body without breaking, the heat strength can reach more than 60Kg at 1200 ℃, the high-temperature smelting strength is met, the high-temperature smelting furnace enters high-temperature equipment such as a submerged arc furnace, a blast furnace and the like, the high-temperature equipment is calcined at 1300-1500 ℃ for 3-4 hours, the compressive strength can reach 60Kg, the high-temperature equipment does not explode and crack under the high-temperature environment, the high-temperature equipment naturally deliquesces along with the temperature rise, the formed coke volume is gradually reduced, and finally the high-temperature equipment completely participates;
fixing carbon: taking the coke particle fixed carbon as an example of about 85%, because the novel formed coke adhesive is a mixed material of organic matters and inorganic matters, the organic matters increase volatilization, the inorganic matters increase ash, the ash content and the volatile matters increase after the novel formed coke adhesive is added, the fixed carbon slightly decreases, the actually measured formed coke fixed carbon is between 79% and 81%, but the fixed carbon is increased to between 80% and 82% after the organic matters are burnt at the temperature of 350 ℃ to volatilize and release;
specific resistance: the actual specific resistance of the coke is 1274, the actual specific resistance of the formed coke is 3049, and the larger the specific resistance is, the better the electrode is placed under the submerged arc furnace;
water content: the moisture of the coke is generally between 8 and 12 percent, the moisture of the formed coke is between 0.7 and 1.5 percent, and the combustion stability is good.
Example 2
A novel formed coke adhesive comprises a first adhesive and a second adhesive, wherein the first adhesive comprises starch, the second adhesive comprises silicon dioxide, and the ratio of the first adhesive to the second adhesive is 1: 1.
Referring to fig. 1, a method for preparing formed coke using a novel formed coke binder includes the steps of:
s1, adding the novel formed coke adhesive into the coke powder according to the proportion of 4% by a belt scale;
s2, stirring the mixture by a double-roll stirrer, and introducing steam into the mixture during stirring;
s3, pressing the balls by using a pair of rollers to prepare the formed coke with the specification of 25mm-45mm, drying the formed coke at the temperature of 160-180 ℃ in a drying tower, and sending the formed coke into a finished product bin after drying.
According to the invention, the novel formed coke adhesive is added with 4% according to the proportion of 1:1, and the strength of the prepared formed coke is high; the cold strength can reach more than 250Kg, can be made into 8 meters free fall and is not broken, the heat strength can reach more than 50Kg at 1200 ℃, the high-temperature smelting strength is met, the high-temperature hot metal enters high-temperature equipment such as an ore furnace, a blast furnace and the like, the high-temperature equipment is calcined at 1300-1500 ℃ for 3-4 hours, the compressive strength can reach 50Kg, the high-temperature equipment is not burst and is not cracked under the high-temperature environment, the high-temperature equipment is naturally deashed along with the temperature rise, the volume of formed coke is gradually reduced, and finally the high-temperature equipment;
fixing carbon: taking the coke particle fixed carbon as an example of about 85%, because the novel formed coke adhesive is a mixed material of organic matters and inorganic matters, the organic matters increase volatilization, the inorganic matters increase ash, the ash content and the volatile matters increase after the novel formed coke adhesive is added, the fixed carbon slightly decreases, the actually measured formed coke fixed carbon is between 79% and 81%, but the fixed carbon is increased to between 80% and 82% after the organic matters are burnt at the temperature of 350 ℃ to volatilize and release;
specific resistance: the actual specific resistance of the coke is 1274, the actual specific resistance of the formed coke is 2949, and the larger the specific resistance is, the better the electrode is placed under the submerged arc furnace;
water content: the moisture of the coke is generally between 8 and 12 percent, the moisture of the formed coke is between 1.2 and 1.8 percent, and the combustion stability is good.
Example 3
A novel formed coke adhesive comprises a first type adhesive and a second type adhesive, wherein the first type adhesive comprises starch, the second type adhesive comprises silicon dioxide, and the ratio of the first type adhesive to the second type adhesive is 3: 2.
Referring to fig. 1, a method for preparing formed coke using a novel formed coke binder includes the steps of:
s1, adding the novel formed coke adhesive into the coke powder according to the proportion of 4% by a belt scale;
s2, stirring the mixture by a double-roll stirrer, and introducing steam into the mixture during stirring;
s3, pressing the balls by using a pair of rollers to prepare the formed coke with the specification of 25mm-45mm, drying the formed coke at the temperature of 160-180 ℃ in a drying tower, and sending the formed coke into a finished product bin after drying.
According to the invention, the novel formed coke adhesive is added with 4 percent according to the proportion of 3:2, and the strength of the prepared formed coke is high; the cold strength can reach more than 280Kg, the free falling body of 10 meters can not be broken, the heat strength can reach 30-40Kg at 1200 ℃, the high-temperature smelting strength is met, the high-temperature coke enters high-temperature equipment such as an ore-smelting furnace, a blast furnace and the like, the high-temperature equipment is calcined at 1300-1500 ℃ for 3-4 hours, the compressive strength can reach 30Kg, the high-temperature coke is not exploded or cracked under the high-temperature environment, the formed coke is naturally deashed along with the temperature rise, the volume of the formed coke is gradually reduced, and finally the formed coke completely participates in the reaction;
fixing carbon: taking the coke particle fixed carbon as an example of about 85%, because the novel formed coke adhesive is a mixed material of organic matters and inorganic matters, the organic matters increase volatilization, the inorganic matters increase ash, the ash content and the volatile matters increase after the novel formed coke adhesive is added, the fixed carbon slightly decreases, the actually measured formed coke fixed carbon is between 79% and 81%, but the fixed carbon is increased to between 81% and 83% after the organic matters are burnt at the temperature of 350 ℃ to volatilize and release;
specific resistance: the actual specific resistance of the coke is 1274, the actual specific resistance of the formed coke is 2866, and the larger the specific resistance is, the better the electrode is placed under the submerged arc furnace;
water content: the moisture of the coke is generally between 8 and 12 percent, the moisture of the formed coke is between 1.8 and 2.2 percent, and the combustion stability is good.
According to the technical scheme, the novel formed coke adhesive comprises two parts, wherein one part is an organic adhesive, the main components of the organic adhesive comprise starch and fibers, the first part is a first type adhesive, the second part is mainly inorganic matters, the main components of the organic adhesive comprise silicon micropowder, magnesium oxide, aluminum oxide, water glass or organic coal tar, asphalt and wood tar, the second type adhesive is formed, the first type adhesive and the second type adhesive are mixed to obtain the novel formed coke adhesive, the pulverized and filtered coke powder and the novel formed coke adhesive are mixed according to the proportion of 24:1, stirring with a double-roller stirrer, introducing steam during stirring, pressing the formed coke into 25-45 mm spheres with a pair of rolling ball equipment after stirring, drying the mixture at the drying temperature of 160-180 ℃ by a vertical drying tower.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.
Claims (10)
1. A novel formed coke adhesive comprises a first type adhesive and a second type adhesive, and is characterized in that: the first type of adhesive comprises starch and powdered fibers, the second type of adhesive comprises silicon dioxide, magnesium oxide, aluminum oxide and water glass, and the ratio of the first type of adhesive to the second type of adhesive is (1-10): (1-10).
2. The new form coke binder as claimed in claim 1, wherein said second type binder further comprises coal tar, pitch and wood tar.
3. The novel form coke binder as claimed in claim 1, wherein the ratio of said first binder type to said second binder type is 2: 3.
4. The novel form coke binder as claimed in claim 1, wherein the ratio of said first binder type to said second binder type is 1: 1.
5. The novel form coke binder as claimed in claim 1, wherein the ratio of said first binder type to said second binder type is 3: 2.
6. A process for preparing formed coke using the novel formed coke binder of any one of claims 1 to 5, comprising the steps of:
s1, adding the novel formed coke adhesive into the coke powder according to the proportion of 3-6% by a belt scale;
s2, stirring by a stirrer, and introducing steam during stirring;
and S3, pressing the balls by using a pair of rollers, drying the balls by using a vertical drying tower, and sending the dried balls into a finished product bin.
7. The process of claim 6 wherein the novel coke binder is present in a 4% ratio.
8. The process of claim 6 wherein the formed coke has a gauge of 25mm to 45 mm.
9. The process of claim 6 wherein the drying tower temperature is from 160 ℃ to 180 ℃.
10. The method of making formed coke using the novel formed coke binder of claim 6 wherein the blender is a two roll blender.
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| CN202010295611.9A CN111363599A (en) | 2020-04-15 | 2020-04-15 | Novel formed coke adhesive and method for preparing formed coke by using same |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5770194A (en) * | 1980-10-17 | 1982-04-30 | Chuo Hatsumei Kenkyusho:Kk | Preparation of synthetic coal of low environmental pollution |
| CN101696364A (en) * | 2009-10-21 | 2010-04-21 | 天津大学 | Metallurgical lump coke bonding agent manufactured by using coke powder and preparation method thereof |
| CN102191102A (en) * | 2010-03-16 | 2011-09-21 | 曲靖市雨明科技有限责任公司 | Bonding agent formula of carburized type cold-hot pressure dual-purpose formed coke |
| WO2012007383A1 (en) * | 2010-07-12 | 2012-01-19 | Siemens Vai Metals Technologies Gmbh | Method for producing pressed articles containing coal particles |
| CN103350997A (en) * | 2013-07-04 | 2013-10-16 | 陕西煤业化工技术研究院有限责任公司 | Technique for preparing activated carbon with powdered coal pyrolysis powdered coke |
| CN106047433A (en) * | 2016-05-27 | 2016-10-26 | 北京奥洁鼎森新能源科技有限公司 | Briquette coal for food service industry and method for producing briquette coal |
| CN107140639A (en) * | 2017-05-04 | 2017-09-08 | 安徽禹泰科技有限公司 | A kind of focal sphere and its manufacture method |
| CN109054685A (en) * | 2018-09-13 | 2018-12-21 | 黄元金 | Coke powder adhesive, suitable for the focal sphere and preparation method thereof of closed calcium carbide furnace production, closed calcium carbide furnace calcium carbide production method |
| CN110467953A (en) * | 2019-05-30 | 2019-11-19 | 太原科瑞康洁净能源有限公司 | The method for producing clean formed coke based on waterglass transition state binder |
| CN110747029A (en) * | 2019-10-08 | 2020-02-04 | 曾坤宁 | Composite briquette binder |
-
2020
- 2020-04-15 CN CN202010295611.9A patent/CN111363599A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5770194A (en) * | 1980-10-17 | 1982-04-30 | Chuo Hatsumei Kenkyusho:Kk | Preparation of synthetic coal of low environmental pollution |
| CN101696364A (en) * | 2009-10-21 | 2010-04-21 | 天津大学 | Metallurgical lump coke bonding agent manufactured by using coke powder and preparation method thereof |
| CN102191102A (en) * | 2010-03-16 | 2011-09-21 | 曲靖市雨明科技有限责任公司 | Bonding agent formula of carburized type cold-hot pressure dual-purpose formed coke |
| WO2012007383A1 (en) * | 2010-07-12 | 2012-01-19 | Siemens Vai Metals Technologies Gmbh | Method for producing pressed articles containing coal particles |
| CN103350997A (en) * | 2013-07-04 | 2013-10-16 | 陕西煤业化工技术研究院有限责任公司 | Technique for preparing activated carbon with powdered coal pyrolysis powdered coke |
| CN106047433A (en) * | 2016-05-27 | 2016-10-26 | 北京奥洁鼎森新能源科技有限公司 | Briquette coal for food service industry and method for producing briquette coal |
| CN107140639A (en) * | 2017-05-04 | 2017-09-08 | 安徽禹泰科技有限公司 | A kind of focal sphere and its manufacture method |
| CN109054685A (en) * | 2018-09-13 | 2018-12-21 | 黄元金 | Coke powder adhesive, suitable for the focal sphere and preparation method thereof of closed calcium carbide furnace production, closed calcium carbide furnace calcium carbide production method |
| CN110467953A (en) * | 2019-05-30 | 2019-11-19 | 太原科瑞康洁净能源有限公司 | The method for producing clean formed coke based on waterglass transition state binder |
| CN110747029A (en) * | 2019-10-08 | 2020-02-04 | 曾坤宁 | Composite briquette binder |
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