CN103508687A - Sleeve lime kiln empty-kiln baking method - Google Patents
Sleeve lime kiln empty-kiln baking method Download PDFInfo
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- CN103508687A CN103508687A CN201210210070.0A CN201210210070A CN103508687A CN 103508687 A CN103508687 A CN 103508687A CN 201210210070 A CN201210210070 A CN 201210210070A CN 103508687 A CN103508687 A CN 103508687A
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Abstract
The invention relates to a sleeve lime kiln. A sleeve lime kiln empty-kiln baking method comprises the steps: introducing coal gas to temporary burners of the sleeve lime kiln; starting up an exhaust gas draught fan to allow a negative pressure in the kiln to be greater than or equal to -0.05 kPa; igniting the temporary burners in order, inserting ash discharging devices from ash discharging device observation holes, and making the burners upward and fixing; when the temperature in the kiln rises to 50 DEG C, controlling the temperature rising speed at 3 DEG C to 5 DEG C per hour for rising the temperature; when the temperature rises to 280 to 300 DEG C, carrying out heat preservation; 24 hours later after beginning to baking the kiln, opening burner drainage screws and exhaust gas flue drainage holes, after the burners drain, tightening the screws, and timing for every 4 hours to drain once; carrying out continuous heat preservation until drainage ports have no obvious water, that is to said moisture of a refractory material in the kiln is baked to a reasonable control range; cutting off temporary burner coal gas valves; closing the exhaust gas draught fan; and eight hours later, closing a cooling draught fan. The method can effectively remove the moisture in the refractory material and ensure the high-temperature using performance of the refractory material.
Description
Technical field
The present invention relates to sleeve lime kiln, relate in particular to sleeve lime kiln and dry kiln method.
Background technology
As the saying goes, within three minutes, put up a kiln, baking in seven minutes.The significance of industrial furnace baking is self-evident.After any industrial furnace builds up, in its resistance to material, after laying-in seasoning maintenance, all must must toast just and can put into production use.
The object that sleeve lime kiln dries kiln is exactly free-water, the crystal water of getting rid of in refractory materials construction backsight body, to obtain the applied at elevated temperature performance of refractory materials.Yet domestic sleeve kilning kiln mode is continued to use Italian Fu Kasi sleeve kilning kiln mode always, be to toast after kiln body is filled Wingdale, this even affects the applied at elevated temperature performance of refractory materials with regard to the serious eliminating effect that has had influence on the inside liner of resistance to material moisture again.Fact proved there is no good roast technic, after going into operation, local resistance to material tends to occur seminess.
Summary of the invention
The present invention is intended to address the aforementioned drawbacks, and the empty kilning kiln of a kind of sleeve lime kiln method is provided.The present invention can effectively remove the moisture in resistance to material and guarantee the applied at elevated temperature of resistance to material performance.
An empty kilning kiln method, it comprises the following steps:
Step 1, draws coal gas to the interim burner of sleeve lime kiln;
Step 2, starts exhaust gas fan, makes negative pressure >=-0.05kpa in kiln;
Step 3, lights a torch, opening point firelock valve, then open interim burner gas pipeline valve, and after interim burner is lighted one by one, from ash discharging gear vision slit, inserting ash discharging gear, burner is also fixing upward;
Step 4, after igniting, kiln temperature rises, and during to 50 ℃, utilizes interim burner gas valve control temperature rise rate to be 3 ℃ to 5 ℃ per hour and heats up;
Step 5, when kiln temperature is warmed up to 280 to 300 ℃, starts to be incubated 12h ~ 48h;
When kiln temperature is warmed up to more than 300 ℃, start cooling blower (separate unit);
Step 6, started to dry kiln after 24 hours, and a large amount of moisture content appears in exhaust gas fan and burner, opened burner draining screw and waste gas flue water vent, tighten the screws after burner draining, regularly a water of 4 hours rows;
Step 7, observes drainage point drainage situation, if water port is without obvious moisture, represents that in kiln, refractory materials moisture has been dried reasonable span of control; If after insulation 48h, while finding still to have obvious moisture, should continue insulation, until water vent is without obvious moisture;
Step 8, cuts off interim burner gas valve; Close exhaust gas fan.
Step 9, closes cooling blower (random operation) after eight hours.
The described empty kilning kiln of sleeve lime kiln method, in described step 7, when kiln temperature is warmed up to more than 300 ℃, starts cooling blower cooling.
For addressing the above problem, the present invention adopts empty kilning roasting, compared with continuing to use Italian Fu Kasi sleeve kilning kiln mode, can more effectively get rid of free-water, crystal water in the liner of resistance to material in kiln.After kilning is roasting, in kiln, resistance to material reaches best applied at elevated temperature performance after heating-up furnace.Kiln body fault reduces, and sleeve kiln extends work-ing life.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is heating curve figure of the present invention.
Embodiment
As shown in Figure 1, the empty baking of sleeve lime kiln is important measures of circulation passage obstruction after interior refractory materials work-ing life of prolongation kiln and minimizing kiln body are produced.The concrete technology flow process of empty baking kiln is as follows:
(1). draw coal gas to the interim burner of sleeve lime kiln;
(2). start exhaust gas fan, rotating speed (valve opening) is controlled at 5% ~ 10%, makes negative pressure >=-0.05kpa in kiln;
(3). light a torch, opening point firelock valve, then open interim burner gas pipeline valve, and after interim burner is lighted one by one, from ash discharging gear vision slit, inserting ash discharging gear, burner is also fixing upward;
(4). after igniting, when kiln temperature rises to 50 ℃, by 3 ℃ to 5 ℃ per hour, heat up.Ascending, descending temperature is controlled by interim burner gas valve.
(5). when kiln temperature is warmed up to 280 to 300 ℃, (generally dry approximately 5 to 7 days kiln time), start to be incubated 12h ~ 48h;
(6). when kiln temperature is warmed up to more than 300 ℃, start cooling blower (separate unit);
(7). starting to dry kiln after 24 hours, there is a large amount of moisture content in exhaust gas fan and burner, should open burner draining screw and waste gas flue water vent, tighten the screws after burner draining.Regularly within 4 hours, arrange a water.
(8). in kiln, insulation, in 12h-48h, is observed drainage point drainage situation, if water port is without obvious moisture, represents that in kiln, refractory materials moisture has been dried reasonable span of control.After insulation 48h, while finding still to have obvious moisture, should continue insulation, until water vent is without obvious moisture;
(9). cut off interim burner gas valve;
(10). close exhaust gas fan;
(11) after .8 hour, close cooling blower (random operation).
Claims (2)
1. the empty kilning kiln of a sleeve lime kiln method, is characterized in that, it comprises the following steps:
Step 1, draws coal gas to the interim burner of sleeve lime kiln;
Step 2, starts exhaust gas fan, makes negative pressure >=-0.05kpa in kiln;
Step 3, lights a torch, opening point firelock valve, then open interim burner gas pipeline valve, and after interim burner is lighted one by one, from ash discharging gear vision slit, inserting ash discharging gear, burner is also fixing upward;
Step 4, after igniting, kiln temperature rises, and during to 50 ℃, utilizes interim burner gas valve control temperature rise rate to be 3 ℃ to 5 ℃ per hour and heats up;
Step 5, when kiln temperature is warmed up to 280 to 300 ℃, starts to be incubated 12h ~ 48h;
When kiln temperature is warmed up to more than 300 ℃, start cooling blower (separate unit);
Step 6, started to dry kiln after 24 hours, and a large amount of moisture content appears in exhaust gas fan and burner, opened burner draining screw and waste gas flue water vent, tighten the screws after burner draining, regularly a water of 4 hours rows;
Step 7, observes drainage point drainage situation, if water port is without obvious moisture, represents that in kiln, refractory materials moisture has been dried reasonable span of control; If after insulation 48h, while finding still to have obvious moisture, should continue insulation, until water vent is without obvious moisture;
Step 8, cuts off interim burner gas valve; Close exhaust gas fan;
Step 9, closes cooling blower (random operation) after eight hours.
2. the empty kilning kiln of sleeve lime kiln according to claim 1 method, is characterized in that, in described step 7, when kiln temperature is warmed up to more than 300 ℃, starts cooling blower cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210070.0A CN103508687B (en) | 2012-06-25 | Sleeve lime kiln sky kilning kiln method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210070.0A CN103508687B (en) | 2012-06-25 | Sleeve lime kiln sky kilning kiln method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103508687A true CN103508687A (en) | 2014-01-15 |
| CN103508687B CN103508687B (en) | 2016-11-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282640A (en) * | 2018-09-29 | 2019-01-29 | 攀钢集团钒钛资源股份有限公司 | Turn round kilning kiln method |
| CN111414028A (en) * | 2020-04-16 | 2020-07-14 | 广东中鹏热能科技有限公司 | Temperature adjusting system for empty kiln and control method thereof |
| CN111943531A (en) * | 2020-08-24 | 2020-11-17 | 广东韶钢松山股份有限公司 | Kiln drying method of double-chamber lime shaft kiln |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009155161A (en) * | 2007-12-26 | 2009-07-16 | Nakayama Sekkai Kogyo Kk | Manufacturing method of salt fired quicklime by vertical burning furnace and salt fired quicklime manufactured by the method |
| CN102303956A (en) * | 2011-07-22 | 2012-01-04 | 石家庄市新华工业炉有限公司 | Sleeve-type lime kiln |
| CN202208690U (en) * | 2011-09-13 | 2012-05-02 | 石家庄市新华工业炉有限公司 | Air circulation system for calcining compartment of sleeve kiln |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009155161A (en) * | 2007-12-26 | 2009-07-16 | Nakayama Sekkai Kogyo Kk | Manufacturing method of salt fired quicklime by vertical burning furnace and salt fired quicklime manufactured by the method |
| CN102303956A (en) * | 2011-07-22 | 2012-01-04 | 石家庄市新华工业炉有限公司 | Sleeve-type lime kiln |
| CN202208690U (en) * | 2011-09-13 | 2012-05-02 | 石家庄市新华工业炉有限公司 | Air circulation system for calcining compartment of sleeve kiln |
Non-Patent Citations (1)
| Title |
|---|
| 熊谟远: "《电石生产工艺学》", 31 October 1988, article ""石灰窑的操作管理"", pages: 171~172 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282640A (en) * | 2018-09-29 | 2019-01-29 | 攀钢集团钒钛资源股份有限公司 | Turn round kilning kiln method |
| CN111414028A (en) * | 2020-04-16 | 2020-07-14 | 广东中鹏热能科技有限公司 | Temperature adjusting system for empty kiln and control method thereof |
| CN111943531A (en) * | 2020-08-24 | 2020-11-17 | 广东韶钢松山股份有限公司 | Kiln drying method of double-chamber lime shaft kiln |
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Address after: 200941, No. 8, building 168, four Yuan Road, Shanghai, Baoshan District Patentee after: SHANGHAI BAOYE METALLURGY ENGINEERING Co.,Ltd. Patentee after: SHANGHAI BAOYE GROUP Corp.,Ltd. Address before: 200941, No. four, 168 yuan Road, Shanghai, Baoshan District Patentee before: SHANGHAI BAOYE CONSTRUCTION INDUSTRIAL FURNACE ENGINEERING TECHNOLOGY Co.,Ltd. Patentee before: SHANGHAI BAOYE GROUP Corp.,Ltd. |
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Granted publication date: 20161130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |