CN1865412A - Blind coal foundry coke briquetting and its production method - Google Patents
Blind coal foundry coke briquetting and its production method Download PDFInfo
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- CN1865412A CN1865412A CN 200610010975 CN200610010975A CN1865412A CN 1865412 A CN1865412 A CN 1865412A CN 200610010975 CN200610010975 CN 200610010975 CN 200610010975 A CN200610010975 A CN 200610010975A CN 1865412 A CN1865412 A CN 1865412A
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Abstract
The invention discloses anthracite cast coke and manufacturing method, which comprises the following steps: blending grinded anthracite with tar and coal tar; moulding to make moulded coal; putting the moulded coal in the tunnel stove to proceed drying, charring, coking and cooling. The invention can keep holonomy and even block for product, which avoids environmental pollution.
Description
Technical field
The invention belongs to coke production technique field, be specifically related to a kind of blind coal foundry coke briquetting and production method thereof.
Background technology
In the existing formed coke production formula, need interpolation coking coal or rich coal to solve the problem of hard coal bad adhesion.But owing to coking coal, rich coal at high temperature have stronger shrinkability, therefore in Coking Process, can cause the coke fragmentation, not only influence quality product, and can produce a large amount of nut cokes and coke powder.Simultaneously, existing formed coke charring process also exists fugitive constituent to overflow problems such as causing environmental pollution, and prior art still can't solve the problems of the technologies described above well.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of novel anthracite casting formed coke is provided, solve easy the to be broken problem in the formed coke carbonization process, improve the quality of products.
Another object of the present invention is to provide a kind of method of producing above-mentioned blind coal foundry coke briquetting.
Purpose of the present invention is achieved by the following technical programs.
A kind of blind coal foundry coke briquetting is made by the raw material of following weight parts: 84～88 parts in hard coal, 4～6 parts in 8～10 parts of coal-tar pitch and coal tar.
A kind of method of producing above-mentioned blind coal foundry coke briquetting, form by following steps:
1, mixed pinching: the coal pitch prill and the coal tar that take by weighing hard coal, heating and melting by described weight part are standby; Earlier hard coal is broken into the powder of granularity≤1mm, places to mix and pinch in the pot, stirred 8～12 minutes under 110 ℃～130 ℃ conditions, respectively standby coal pitch prill and mixed the pinching of coal tar adding are stirred 8～12 minutes in the pot again, mixed pinching finishes;
2, moulding: the raw material after mixed the pinching leaves standstill after 24 hours and is moulded coal through pair roller or impact briquetting;
3, charging: 1～2 coking chamber is set on every kiln car, moulded coal is placed in the coking chamber, the coking chamber top is provided with 1～2 venting hole;
4, charing: charring furnace adopts tunnel furnace, tunnel furnace comprises dryer section, charing section, coking section and cooling section, kiln car enters tunnel furnace from dryer section, and order is by charing section, coking section and cooling section, when naturally cooling to below 200 ℃ behind the kiln car kiln discharge, take out content and promptly obtain casting formed coke.
Described dry segment length 3～13M, the temperature in it is by the interval of 10 ℃～45 ℃/m, progressively rises to 150 ℃ by 20 ℃, and the current speed of kiln car is 0.3～4.3m/hr; Described charing segment length 40～80M, temperature is by the interval of 10 ℃～20 ℃/m, progressively rises to 950 ℃ by 150 ℃, and the current speed of kiln car is 0.7～3.2m/hr; Described coking section temperature is set at 950 ℃ ± 30 ℃, and the current time of kiln car is 7～15 hours.
Described coking segment length 10～30M, the current speed of kiln car is 0.7～4.3m/hr.
Described cooling segment length 20～40m.
Kiln car is 3～12 hours at the transit time of dryer section.
Kiln car is 25～55 hours at the transit time of charing section.
Kiln car is set at 0.7～3.2m/hr at the passage rate of each section.
As the preferred technical solution of the present invention, the length of each temperature section is respectively in the tunnel furnace: dryer section 7M, charing section 58M, coking section 15M, cooling section 30M.
Compared with prior art, the present invention has following advantage:
1, need not add coking coal or rich coal in the raw material, formed coke is difficult for taking place broken in carbonization process, and formed product is complete, the lumpiness homogeneous;
2, the product strength height, ash is low, void content is low, satisfies the requirement of GB GB8729-88 one-level foundry coke after testing fully;
3, the volatile matter that produces in the carbonization process had both been saved fuel and had also been solved the environmental pollution that volatile matter is overflowed and caused simultaneously through fully burning, killed two birds with one stone.
Description of drawings
Fig. 1 is the synoptic diagram of kiln car of the present invention and tunnel furnace relation;
Fig. 2 is the layout synoptic diagram of each temperature section in the tunnel furnace shown in Figure 1;
Fig. 3 is the tunnel furnace structural representation;
Fig. 4 is the structural representation of kiln car shown in Figure 1;
Fig. 5 is the side-view when on the kiln car 1 coking chamber being set;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 is the side-view when on the kiln car 2 coking chambers being set;
Fig. 8 is the vertical view of Fig. 7;
1 tunnel furnace, 2 kiln cars, 3 coking chambers, 4 venting holes among the figure.
Embodiment
Below in conjunction with drawings and Examples, the present invention is done explanation in further detail, but they not limitation of the invention.
Embodiment 1
Raw material is formed: 88 parts in the hard coal of the low ash of high-quality, 4 parts in 8 parts of coal-tar pitch of heating and melting and coal tar.Earlier hard coal is broken into the powder of granularity≤1mm, places to mix and pinch in the pot, under 110 ℃ of conditions, stirred 12 minutes, add coal-tar pitch and coal tar more respectively and stirred 12 minutes.Raw material after mixed the pinching leaves standstill after 24 hours and is moulded coal through roller press briquetting, and it detects index and sees Table 1.
Table 1
| Test index | Data |
| Moisture, % | 5.80 |
| Ash content, % | 5.20 |
| Volatile matter, % | 20.21 |
| Full sulphur, % | 0.59 |
| Size | φ80×100mm |
As Fig. 4～shown in Figure 8, on every kiln car, build 1～2 coking chamber by laying bricks or stones with refractory brick, moulded coal neatly is stacked in the coking chamber.The coking chamber top is provided with 1 venting hole, and the volatile matter that produces in the carbonization process is overflowed by venting hole, and fully burning in kiln, has also solved the environmental pollution that volatile matter is overflowed and caused when replenishing kiln temperature.
As Fig. 1～tunnel furnace of building by laying bricks or stones shown in Figure 3, the building by laying bricks or stones of tunnel furnace referring to " kiln is built by laying bricks or stones and installed " (ISBN7-5629-2222-5) book.
Described tunnel furnace comprises dryer section, charing section, coking section and cooling section, and kiln car enters tunnel furnace from dryer section, and order is by charing section, coking section and cooling section.Wherein dry segment length 3m, the temperature in it is by the interval of 45 ℃/m, progressively rises to 150 ℃ by 20 ℃, and the current speed of kiln car is 0.7m/hr; Charing segment length 40m, temperature is by the interval of 20 ℃/m, progressively rises to 950 ℃ by 150 ℃, and the current speed of kiln car is 0.7m/hr; Coking segment length 10m, temperature is set at 980 ℃, and the current speed of kiln car is 0.7m/hr, kiln car transit time 7 hours; Cooling segment length 20m, the current speed of kiln car is 0.7m/hr.When naturally cooling to below 200 ℃ behind the kiln car kiln discharge, take out content and promptly obtain casting formed coke.
Require product is tested according to foundry coke standard GB 8729-88, test result sees Table 2:
Table 2
| Index | The result | The GB superfine |
| Lumpiness, mm | ＞80 | ＞60 |
| Moisture, % | 1.22 | ≤5 |
| Ash content, % | 6.97 | ≤8 |
| Volatile matter, % | 1.26 | ≤1.5 |
| Sulphur content, % | 0.56 | ≤0.6 |
| Barrate strength (M 40)，％ | 87 | ≥85 |
| Dropping strength, % | 93 | ≥92 |
| Apparent porosity, % | 26 | ≤40 |
| Broken burnt rate, % | 3.5 | ≤4 |
As shown in Table 2, the foundry coke of the present invention's production has met or exceeded the standard of the superfine foundry coke of GB.
Embodiment 2
Repeat embodiment 1, following difference is arranged: raw material is formed: 86 parts in the hard coal of the low ash of high-quality, 5 parts in 9 parts of coal-tar pitch of heating and melting and coal tar.
Repeat embodiment 1, following difference is arranged: raw material is formed: 84 parts in the hard coal of the low ash of high-quality, 6 parts in 10 parts of coal-tar pitch of heating and melting and coal tar.
Repeat embodiment 1, following difference is arranged: the hard coal powder places to mix and pinches in the pot, stirs 10 minutes under 120 ℃ of conditions, adds coal-tar pitch and coal tar more respectively and stirs 10 minutes.
Embodiment 5
Repeat embodiment 1, following difference is arranged: the hard coal powder places to mix and pinches in the pot, stirs 8 minutes under 130 ℃ of conditions, adds coal-tar pitch and coal tar more respectively and stirs 8 minutes.
Embodiment 6
Repeat embodiment 1, following difference is arranged: mix the raw material impact briquetting after pinching.
Embodiment 7
Repeat embodiment 1, following difference is arranged: the coking chamber top is provided with 2 venting holes.
Embodiment 8
Repeat embodiment 1, following difference is arranged: wherein dry segment length 4.4M, the temperature in it is by the interval of 30 ℃/m, progressively rises to 150 ℃ by 20 ℃, and the current speed of kiln car is 1.4m/hr; Charing segment length 53.4M, temperature is by the interval of 15 ℃/m, progressively rises to 950 ℃ by 150 ℃, and the current speed of kiln car is 1.4m/hr; Coking segment length 20m, temperature is set at 950 ℃, and the current speed of kiln car is 1.4m/hr, and the current time of kiln car is 11 hours; Cooling segment length 30m, the current speed of kiln car is 1.4m/hr.
Embodiment 9
Repeat embodiment 8, following difference is arranged: the length of each temperature section is respectively in the tunnel furnace: dryer section 7m, charing section 58m, coking section 15m, cooling section 30m.
Embodiment 10
Repeat embodiment 1, following difference is arranged: wherein dry segment length 13m, the temperature in it is by the interval of 10 ℃/m, progressively rises to 150 ℃ by 20 ℃, and the current speed of kiln car is 3.2m/hr; Charing segment length 80m, temperature is by the interval of 10 ℃/m, progressively rises to 950 ℃ by 150 ℃, and the current speed of kiln car is 3.2m/hr; Coking segment length 30m, temperature is set at 920 ℃, and the current speed of kiln car is 3.2m/hr, and the current time of kiln car is 15 hours; Cooling segment length 40m, the current speed of kiln car is 3.2m/hr.
Embodiment 11
Repeat embodiment 10, following difference is arranged: kiln car all is set at 2m/hr at the passage rate of each section.
Embodiment 12
Repeat embodiment 1, following difference is arranged: kiln car all is set at 1m/hr at the passage rate of each section.
Claims (9)
1, a kind of blind coal foundry coke briquetting is made by the raw material of following weight parts: 84～88 parts in hard coal, 4～6 parts in 8～10 parts of coal-tar pitch and coal tar.
2, the production method of the described blind coal foundry coke briquetting of claim 1, form by following steps:
(1) mixed pinching: the coal pitch prill and the coal tar that take by weighing hard coal, heating and melting by described weight part are standby; Earlier hard coal is broken into the powder of granularity≤1mm, places to mix and pinch in the pot, stirred 8～12 minutes under 110 ℃～130 ℃ conditions, respectively standby coal pitch prill and mixed the pinching of coal tar adding are stirred 8～12 minutes in the pot again, mixed pinching finishes;
(2) moulding: the raw material after mixed the pinching leaves standstill after 24 hours and is moulded coal through pair roller or impact briquetting;
(3) charging: 1～2 coking chamber is set on every kiln car, moulded coal is placed in the coking chamber, the coking chamber top is provided with 1～2 venting hole;
(4) charing: charring furnace adopts tunnel furnace, tunnel furnace comprises dryer section, charing section, coking section and cooling section, kiln car enters tunnel furnace from dryer section, and order is by charing section, coking section and cooling section, when naturally cooling to below 200 ℃ behind the kiln car kiln discharge, take out content and promptly obtain casting formed coke.
3, formed coke production method according to claim 2 is characterized in that: described dry segment length 3～13M, and the temperature in it is by the interval of 10 ℃～45 ℃/m, progressively rises to 150 ℃ by 20 ℃, and the current speed of kiln car is 0.3～4.3m/hr; Described charing segment length 40～80M, temperature is by the interval of 10 ℃～20 ℃/m, progressively rises to 950 ℃ by 150 ℃, and the current speed of kiln car is 0.7～3.2m/hr; Described coking section temperature is set at 950 ℃ ± 30 ℃, and the current time of kiln car is 7～15 hours.
4, according to claim 2 or 3 described formed coke production methods, it is characterized in that: described coking segment length 10～30M, the current speed of kiln car is 0.7～4.3m/hr.
5, according to claim 2 or 3 described formed coke production methods, it is characterized in that: described cooling segment length 20～40m.
6, according to claim 2 or 3 described formed coke production methods, it is characterized in that: kiln car is 3～12 hours at the transit time of dryer section.
7, according to claim 2 or 3 described formed coke production methods, it is characterized in that: kiln car is 25～55 hours at the transit time of charing section.
8, according to claim 2 or 3 described formed coke production methods, it is characterized in that: kiln car is set at 0.7～3.2m/hr at the passage rate of each section.
9, according to claim 2 or 3 described formed coke production methods, it is characterized in that: the length of each temperature section is respectively in the tunnel furnace: dryer section 7M, charing section 58M, coking section 15M, cooling section 30M.
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| CN 200610010975 CN1865412A (en) | 2006-06-20 | 2006-06-20 | Blind coal foundry coke briquetting and its production method |
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|---|---|---|---|
| CN 200610010975 CN1865412A (en) | 2006-06-20 | 2006-06-20 | Blind coal foundry coke briquetting and its production method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880535A (en) * | 2010-07-08 | 2010-11-10 | 沈阳北冶冶金科技有限公司 | Lignite dry distillation device and method |
| CN102492507A (en) * | 2011-11-16 | 2012-06-13 | 安徽天之源型煤有限公司 | Casting briquette and production method |
| CN102559225A (en) * | 2011-12-05 | 2012-07-11 | 邹建明 | Method for processing coke by electrolytic aluminium waste and special device |
| CN102643698A (en) * | 2012-05-08 | 2012-08-22 | 宜宾天原集团股份有限公司 | Preparation process of formed coke |
| CN104694192A (en) * | 2014-12-30 | 2015-06-10 | 株洲醴陵旗滨玻璃有限公司 | Diversified composite fuel for glass kiln |
-
2006
- 2006-06-20 CN CN 200610010975 patent/CN1865412A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880535A (en) * | 2010-07-08 | 2010-11-10 | 沈阳北冶冶金科技有限公司 | Lignite dry distillation device and method |
| CN101880535B (en) * | 2010-07-08 | 2014-01-01 | 沈阳北冶冶金科技有限公司 | Lignite dry distillation device and method |
| CN102492507A (en) * | 2011-11-16 | 2012-06-13 | 安徽天之源型煤有限公司 | Casting briquette and production method |
| CN102559225A (en) * | 2011-12-05 | 2012-07-11 | 邹建明 | Method for processing coke by electrolytic aluminium waste and special device |
| CN102643698A (en) * | 2012-05-08 | 2012-08-22 | 宜宾天原集团股份有限公司 | Preparation process of formed coke |
| CN104694192A (en) * | 2014-12-30 | 2015-06-10 | 株洲醴陵旗滨玻璃有限公司 | Diversified composite fuel for glass kiln |
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