CN203683393U - Low-grade magnesite calcination system - Google Patents
Low-grade magnesite calcination system Download PDFInfo
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- CN203683393U CN203683393U CN201420042383.4U CN201420042383U CN203683393U CN 203683393 U CN203683393 U CN 203683393U CN 201420042383 U CN201420042383 U CN 201420042383U CN 203683393 U CN203683393 U CN 203683393U
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- rotary kiln
- grade magnesite
- gas pipe
- calcination system
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Abstract
The utility model proposes a low-grade magnesite calcination system, and aims at solving the problems of low quality of low-grade magnesite burnt in the prior art and large resource consumption in calcination. The low-grade magnesite calcination system comprises a rotary kiln, a burner, a gas pipe, a draught fan, a feeding device, a smoke chamber, a dust remover, a dust storage tank and a chimney, wherein the burner is arranged inside the rotary kiln; one end of the gas pipe passes through the wall of the rotary kiln and is connected with the burner; the other end of the gas pipe is connected with a gas interface; the draught fan is connected with the gas pipe; the feeding device is matched with the rotary kiln; the smoke chamber is connected with the rotary kiln; the dust remover is connected with the smoke chamber; the dust storage tank is connected with the dust remover; and the chimney is connected with the dust remover. By adopting the low-grade magnesite calcination system disclosed by the utility model, the low-grade magnesite is successfully burnt by adjusting the flame length, the flame temperature and the rotation speed of the rotary kiln, the sintered product is even in temperature, free of overburnt and underburnt phenomena, good in safety and high in production efficiency, and the activity, the magnesium oxide content and the loss on ignition of the sintered product are superior to those of the national standard.
Description
Technical field
The utility model relates to calcining field, refers to especially a kind of low-grade magnesite calcination system.
Background technology
Industrial Stoves are to utilize in industrial production the heat producing with fuel combustion or electric energy conversion, by material or workpiece smelt, the Thermal Equipment of the operation such as roasting, sintering, fusing, heating.
China taking coal under main energy structure, Industrial Stoves are one of main disposal of pollutants sources, are also big power consumers.According to the data statistics of prediction industrial research institute, approximately 110,000 of the total all types of industries kilns of China, wherein coal-fired industrial furnace approximately has more than 60,000, is mainly distributed in the areas such as North China, northwest and southwest.
Industrial Stoves are applied to all trades and professions of national economy, have a large capacity and a wide range.The most of Industrial Stoves of China are all relatively backward at aspects such as furnace type structure, firing system, UTILIZATION OF VESIDUAL HEAT IN, thermal insulation material, thermal technology's detection, automatic control, Application of Microcomputer and environmental protection, and China's Industrial Stoves capacity is mostly less than normal, cause energy dissipation, environmental pollution is simultaneously serious.At present the Industrial Stoves utilization rate of waste heat of China's calcium carbide, iron alloy, iron and steel, chemical industry, building materials, the main power consumption industry such as coloured is only in 5% left and right, and produce steam for mainly utilizing mode with fume afterheat or direct burning, effective rate of utilization less than 40%, do not reach real comprehensive utilization of energy, and give off a large amount of CO
2, Greenhouse effect are serious.
But calcining low-grade magnesite adopts shaft furnace and reflecting kiln more.But shaft furnace and reflecting kiln can not successfully be calcined low-grade magnesite, burn till product and do not reach national quality requirement.Utilize rotary kiln can successfully calcine low-grade magnesite, burn till quality product and be better than national standard.
But low-grade magnesite ore quality is not good, various impurity is more, no matter be that high temperature or low temperature all can not make the impurity in low-grade magnesite stone successfully separate, burn till the not familiar inequality of product, and coal-fired demand is large, and resource consumption is larger.Low-grade magnesite all can not be utilized effectively, and causes resource serious waste.
So China's magnesite industry is badly in need of effective equipment and process technology, and low-grade magnesite is fully utilized.
Utility model content
The utility model proposes a kind of low-grade magnesite calcination system, the large problem of resource consumption while having solved the low and calcining of the low-grade magnesite quality of prior art calcining.
The technical solution of the utility model is achieved in that
A kind of low-grade magnesite calcination system, comprising:
Rotary kiln;
Burner, is arranged in described rotary kiln;
Gas pipe, described gas pipe one end is connected with described burner through described rotary kiln wall, and the described gas pipe the other end is connected with coal gas interface;
Blower fan, is connected with described gas pipe;
Feeding device, mates with described rotary kiln;
Smoke-box, is connected with described rotary kiln;
Fly-ash separator, is connected with described smoke-box;
Dust hold-up vessel, is connected with described fly-ash separator;
Chimney, is connected with described fly-ash separator.
Further, low-grade magnesite calcination system described in the utility model, also comprises:
Explosion trap, is arranged on described gas pipe.
Further, low-grade magnesite calcination system described in the utility model, also comprises:
Water discharge valve, is arranged on described gas pipe.
Further, low-grade magnesite calcination system described in the utility model, also comprises:
Shunt valve, is arranged on described gas pipe.
Further, low-grade magnesite calcination system described in the utility model, also comprises:
Induced draft fan, is arranged between described fly-ash separator and described chimney, is connected respectively with described fly-ash separator and described chimney.
Further, low-grade magnesite calcination system described in the utility model, also comprises:
Bleeder, is connected with described gas pipe.
Further, described feeding device comprises:
Lift;
Elevating hopper, is connected with described lift.
Further, low-grade magnesite calcination system described in the utility model, also comprises:
Feeding preheating pipe, is arranged in described smoke-box, and described feeding preheating pipe one end is communicated with rotary kiln, and the described feeding preheating pipe the other end mates with described feeding device.
The beneficial effects of the utility model are:
1, low-grade magnesite calcination system described in the utility model, by flame system in transformation kiln, employing coke oven exhaust gas is fuel, the length of flame can be regulated as required, by the adjusting to the length of flame, flame temperature and rotary kiln rotating speed, the object of the calcining low-grade magnesite that hits pay dirk, burns till product temperature even, there is no burning and underburnt phenomenon, activity, content of magnesia and the loss on ignition of burning till product are all better than national standard.
2, low-grade magnesite calcination system described in the utility model, also comprises explosion trap, water discharge valve, shunt valve and bleeder, has further improved security.
3, low-grade magnesite calcination system described in the utility model, raw material first absorbed heat by feeding preheating pipe from high-temp waste gas before entering rotary kiln, and dry intensification can make ton finished product fuel consumption reduce by 30%, further enhance productivity, not only economize on resources but also reduce costs.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of low-grade magnesite calcination system of the utility model.
In figure:
1, rotary kiln; 2, burner; 3, gas pipe; 4, coal gas interface; 5, blower fan; 6, smoke-box; 7, fly-ash separator; 8, dust hold-up vessel; 9, chimney; 10, explosion trap; 11, water discharge valve; 12, shunt valve; 13, induced draft fan; 14, bleeder; 15, lift; 16, elevating hopper.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of low-grade magnesite calcination system described in the utility model, comprising:
Rotary kiln 1;
Gas pipe 3, gas pipe 3 one end are connected with burner 2 through rotary kiln 1 kiln wall, and gas pipe 3 the other ends are connected with coal gas interface 4;
Blower fan 5, is connected with gas pipe 3;
Feeding device, mates with rotary kiln 1;
Smoke-box 6, is connected with rotary kiln 1;
Fly-ash separator 7, is connected with smoke-box 6;
Dust hold-up vessel 8, is connected with fly-ash separator 7;
Chimney 9, is connected with fly-ash separator 7.
Wherein, what enter gas pipe 3 from coal gas interface 4 is coke oven exhaust gas, certainly, can also be other inflammable gas, such as Sweet natural gas, manufactured gas, manufactured fuel gas, liquefied petroleum gas (LPG), coal-seam gas, biogas etc., and the utility model does not limit this.
Low-grade magnesite calcination system described in the utility model, by flame system in transformation kiln, employing coke oven exhaust gas is fuel, the length of flame can be regulated as required, by the adjusting to the length of flame, flame temperature and rotary kiln 1 rotating speed, the object of the calcining low-grade magnesite that hits pay dirk, burns till product temperature even, there is no burning and underburnt phenomenon, activity, content of magnesia and the loss on ignition of burning till product are all better than national standard.
Low-grade magnesite calcination system described in the utility model, can also comprise:
Explosion trap 10, is arranged on gas pipe 3.
Low-grade magnesite calcination system described in the utility model, can also comprise:
Water discharge valve 11, is arranged on gas pipe 3.
Low-grade magnesite calcination system described in the utility model, can also comprise:
Shunt valve 12, is arranged on gas pipe 3.
Low-grade magnesite calcination system described in the utility model, can also comprise:
Induced draft fan 13, is arranged between fly-ash separator 7 and chimney 9, is connected respectively with fly-ash separator 7 and chimney 9.
Low-grade magnesite calcination system described in the utility model, can also comprise:
Bleeder 14, is connected with gas pipe 3.
Low-grade magnesite calcination system described in the utility model, also comprises explosion trap 10, water discharge valve 11, shunt valve 12 and bleeder 14, has further improved security.
Described feeding device comprises:
Elevating hopper 16, is connected with lift 15.
Low-grade magnesite calcination system described in the utility model, can also comprise:
Feeding preheating pipe, is arranged in smoke-box 6, and feeding preheating pipe one end is communicated with rotary kiln 1, and the feeding preheating pipe the other end mates with feeding device.
Low-grade magnesite calcination system described in the utility model, raw material first absorbed heat by feeding preheating pipe from high-temp waste gas before entering rotary kiln 1, and dry intensification can make ton finished product fuel consumption reduce by 30%, further enhance productivity, not only economize on resources but also reduce costs.
In addition, low-grade magnesite calcination system described in the utility model can also comprise desulfurizer, or adopts dust-removing and desulfurizing integrated device to replace original fly-ash separator 7, smoke-box 6 is interior can also arrange aggregate bin, and this aggregate bin bottom communicates with feeding preheating pipe entrance end by pipeline, thereby can recycle in time the deposition powder in smoke-box 6, low-grade magnesite calcination system can also comprise combustion-supporting tracheae, this combustion-supporting tracheae is through rotary kiln 1 kiln wall and be connected to burner 2, the central axis that combustion-supporting tracheae can paste rotary kiln 1 inwall wraparound rotary kiln 1 coils in the shape of a spiral, when combustion-supporting gas from the external world in the time that combustion-supporting tracheae is transported to burner 2, because the combustion-supporting tracheae in rotary kiln 1 forms coil pipe, thereby compared with the combustion-supporting tracheae of existing straight tube, combustion-supporting gas has longer transmission range in combustion-supporting tracheae, thereby can be heated by the high-temperature gas in rotary kiln 1 more fully, thereby reduce the consumption of coal gas.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a low-grade magnesite calcination system, is characterized in that, comprising:
Rotary kiln (1);
Burner (2), is arranged in described rotary kiln (1);
Gas pipe (3), described gas pipe (3) one end is connected with described burner (2) through described rotary kiln (1) kiln wall, and described gas pipe (3) the other end is connected with coal gas interface (4);
Blower fan (5), is connected with described gas pipe (3);
Feeding device, mates with described rotary kiln (1);
Smoke-box (6), is connected with described rotary kiln (1);
Fly-ash separator (7), is connected with described smoke-box (6);
Dust hold-up vessel (8), is connected with described fly-ash separator (7);
Chimney (9), is connected with described fly-ash separator (7).
2. low-grade magnesite calcination system according to claim 1, is characterized in that, also comprises:
Explosion trap (10), is arranged on described gas pipe (3).
3. low-grade magnesite calcination system according to claim 1, is characterized in that, also comprises:
Water discharge valve (11), is arranged on described gas pipe (3).
4. low-grade magnesite calcination system according to claim 1, is characterized in that, also comprises:
Shunt valve (12), is arranged on described gas pipe (3).
5. low-grade magnesite calcination system according to claim 1, is characterized in that, also comprises:
Induced draft fan (13), is arranged between described fly-ash separator (7) and described chimney (9), is connected respectively with described fly-ash separator (7) and described chimney (9).
6. low-grade magnesite calcination system according to claim 1, is characterized in that, also comprises:
Bleeder (14), is connected with described gas pipe (3).
7. low-grade magnesite calcination system according to claim 1, is characterized in that, described feeding device comprises:
Lift (15);
Elevating hopper (16), is connected with described lift (15).
8. low-grade magnesite calcination system according to claim 1, is characterized in that, also comprises:
Feeding preheating pipe, is arranged in described smoke-box (6), and described feeding preheating pipe one end is communicated with rotary kiln (1), and the described feeding preheating pipe the other end mates with described feeding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420042383.4U CN203683393U (en) | 2014-01-22 | 2014-01-22 | Low-grade magnesite calcination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420042383.4U CN203683393U (en) | 2014-01-22 | 2014-01-22 | Low-grade magnesite calcination system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203683393U true CN203683393U (en) | 2014-07-02 |
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ID=51005321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420042383.4U Expired - Fee Related CN203683393U (en) | 2014-01-22 | 2014-01-22 | Low-grade magnesite calcination system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203683393U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731838A (en) * | 2016-04-26 | 2016-07-06 | 沈阳鑫博工业技术股份有限公司 | Calcination device and method for preparing light calcined magnesia through magnesite ore |
| CN107101201A (en) * | 2016-02-22 | 2017-08-29 | 梁燕龙 | Shaft furnace is with the method that biogas is fuel |
-
2014
- 2014-01-22 CN CN201420042383.4U patent/CN203683393U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101201A (en) * | 2016-02-22 | 2017-08-29 | 梁燕龙 | Shaft furnace is with the method that biogas is fuel |
| CN105731838A (en) * | 2016-04-26 | 2016-07-06 | 沈阳鑫博工业技术股份有限公司 | Calcination device and method for preparing light calcined magnesia through magnesite ore |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20220122 |