CN101798193A - Electrical heating method for chemical gypsum - Google Patents
Electrical heating method for chemical gypsum Download PDFInfo
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- CN101798193A CN101798193A CN 201010127579 CN201010127579A CN101798193A CN 101798193 A CN101798193 A CN 101798193A CN 201010127579 CN201010127579 CN 201010127579 CN 201010127579 A CN201010127579 A CN 201010127579A CN 101798193 A CN101798193 A CN 101798193A
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- kiln
- tetanic
- electrically heated
- heating
- electricity
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Abstract
The invention discloses an electrical heating method for chemical gypsum, comprising the following steps of: inputting ardealite to an electric titanic convection heating kiln by a material input device to carry out far infrared titanic convection electric heating. The electric heating process is controlled by a microcomputer integrated control system. The product processed by the electric heating is input to a material storage bin by the output device. The method, using electric electricity as an energy source, carries out heating treatment on the ardealite by adopting internal heating mode, a continuous mode and an assembly line work mode, thereby lowering the production cost of ardealite effectively.
Description
Technical field
The present invention relates to a kind of electrical heating method for chemical gypsum.
Background technology
Phosphogypsum is the waste residue that is produced in Rock Phosphate (72Min BPL) and the sulfuric acid reaction system process phosphoric acid, its major ingredient CaSO
4.2H
2The content of O generally reaches about 70%, and less important composition is different and different with the ore source, and common every generation 1T phosphoric acid can produce the phosphogypsum of 3～5T.At present annual emissions every year of China's phosphogypsum is approximately with 3,000 ten thousand tons speed increase.
The comprehensive utilization of phosphogypsum relative difficult, the discharging of a large amount of phosphogypsums becomes the heavy burden of production of phosphate fertilizer producer and department of local government.Along with national departments concerned bans use of clay brick gradually, carry forward vigorously the materials for wall material revolution in recent years, for comprehensive utilization of phosphogypsum provides good policy support.
At present, in the processing and utilization of phosphogypsum, generally use the way of calcined dehydration, with CaSO
4.2H
2O generates CaSO through thermal dehydration
4.1/2H
2O.About calciner abroad before nineteen sixties, based on the tradition frying pan and outer burning formula rotary kiln at intermittence of burning type slowly.Later stage in the sixties, aforesaid device has been carried out technological transformation, the seventies, intermittently frying pan develops into continuous frying pan, has developed into the taper frying pan after the eighties again; Rotary kiln also develops into the inside burning type calcining from outer burning formula.For promoting the technical progress of gypsum industry, improve the travelling speed of gypsum building material product production line, developed the air-flowing type quick calcining process again.Generally, calcining process exist discharging to continuous discharging, indirect heating to direct heating, be dewatered to the trend development that fast dewatering develops simultaneously at a slow speed.
Present stage.Domestic phosphogypsum calcining heating unit mainly contains rotary kiln and fluidizing furnace etc., and they all are to make fuel with coal, is aided with the moving mode of fax and moves.From comprehensive benefit, the required coal electricity cost of the every processing of rotary oven 1T phosphogypsum is not less than 60 yuan, and the required various costs of the every processing of fluidizing furnace 1T phosphogypsum are not low yet.
So the development research new technology, industry byproduct---the processing cost of phosphogypsum is necessary to continue reduction.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the higher defective of phosphogypsum treatment process cost in the prior art, a kind of electrical heating method for chemical gypsum is provided, the energy is done in its electricity consumption, adopt the mode of internal heating, continous way, pipelining that phosphogypsum is carried out heat treated, can effectively reduce the production cost of phosphogypsum.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of electrical heating method for chemical gypsum of the present invention, described method comprises the following steps:
Phosphogypsum is imported electric tetanic convective heating kiln by raw material input device and is carried out the tetanic convection current electrically heated of far infrared, and the electrically heated process is by the control of micro computer integrated control system, and the finished product after electrically heated is handled is stored by take-off equipment input feed bin.
Electrically heated process of the present invention is:
1), by the micro computer integrated control system the tetanic convective heating kiln of electricity is carried out preheating, preheating temperature is 500 ℃-1000 ℃, and be 1-5 hour warm up time;
2), in charging, the micro computer integrated control system compensates automatically to the tetanic convective heating of the tetanic convective heating kiln temperature of electricity electricity automatically, keeps constant temperature in the kiln, thermostat temperature is 500 ℃-1000 ℃;
3), be provided with the moving shredding unit of fax in the electric tetanic convective heating kiln, the electrically heated while in kiln, the shredding unit entry into service is moved in fax, and pain phosphorus gypsum in the kiln is dispersed as powdery, makes its thermally equivalent.
The tetanic convective heating kiln of described electricity is connected with the backflow collector, described backflow collector connects sack cleaner, in the electrically heated process, the part solid particulate is taken kiln out of with hot gas flow and is entered the backflow collector in the kiln, overwhelming majority solid particulate is transmitted back in the kiln by the backflow collector after the backflow collector is collected, the flue gas of being discharged by the backflow collector enters sack cleaner, and the flue gas after the dedusting is sent into smoke stack emission through induced draft fan.
The present invention adopts Electric heating, does the energy with electricity, adopts the mode of internal heating, continous way, pipelining that phosphogypsum is carried out heat treated, can effectively reduce the cost that phosphogypsum is handled.
Type of heating of the present invention is to adopt the direct-fired principle of far infrared, its heat energy need not pass through any medium, directly phosphogypsum is heated, there is not heat leakage, this kind type of heating can be adjusted flexibly owing to its temperature, thereby quality product is relatively stable, and product does not contain coal ash simultaneously, and in vain, therefore quality height, color have higher economic benefit.Adopt the mode of electric energy internal heating, not only can reduce cost greatly, and the processing power height.
Embodiment
Phosphogypsum is imported electric tetanic convective heating kiln by raw material input device and is carried out the tetanic convection current electrically heated of far infrared, and the electrically heated process is by the control of micro computer integrated control system, and the finished product after electrically heated is handled is stored by take-off equipment input feed bin.
Electrically heated process of the present invention is:
1), by the micro computer integrated control system the tetanic convective heating kiln of electricity is carried out preheating, preheating temperature is 700 ℃, 2 hours warm up time;
2), in charging, the micro computer integrated control system compensates automatically to the tetanic convective heating of the tetanic convective heating kiln temperature of electricity electricity automatically, keeps constant temperature in the kiln, thermostat temperature is 700 ℃.
3), be provided with the moving shredding unit of fax in the electric tetanic convective heating kiln, the electrically heated while in kiln, the shredding unit entry into service is moved in fax, and pain phosphorus gypsum in the kiln is dispersed as powdery, makes its thermally equivalent.
The tetanic convective heating kiln of described electricity is connected with the backflow collector, described backflow collector connects sack cleaner, in the electrically heated process, the part solid particulate is taken kiln out of with hot gas flow and is entered the backflow collector in the kiln, overwhelming majority solid particulate is transmitted back in the kiln by the backflow collector after the backflow collector is collected, the flue gas of being discharged by the backflow collector enters sack cleaner, and the flue gas after the dedusting is sent into smoke stack emission through induced draft fan.
The present invention adopts Electric heating, does the energy with electricity, adopts the mode of internal heating, continous way, pipelining that phosphogypsum is carried out heat treated, can effectively reduce the cost that phosphogypsum is handled.
Type of heating of the present invention is to adopt the direct-fired principle of far infrared, its heat energy need not pass through any medium, directly phosphogypsum is heated, there is not heat leakage, this kind type of heating can be adjusted flexibly owing to its temperature, thereby quality product is relatively stable, and product does not contain coal ash simultaneously, and in vain, therefore quality height, color have higher economic benefit.Adopt the mode of electric energy internal heating, not only can reduce cost greatly, and the processing power height.
It should be noted that at last: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification sheets has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, all should be encompassed in the claim scope of the present invention.
Claims (3)
1. electrical heating method for chemical gypsum, it is characterized in that: described electrical heating method for chemical gypsum comprises the following steps:
Phosphogypsum is imported electric tetanic convective heating kiln by raw material input device and is carried out the tetanic convection current electrically heated of far infrared, and the electrically heated process is by the control of micro computer integrated control system, and the finished product after electrically heated is handled is stored by take-off equipment input feed bin.
2. electrical heating method for chemical gypsum as claimed in claim 1 is characterized in that: described electrically heated process is:
1), by the micro computer integrated control system the tetanic convective heating kiln of electricity is carried out preheating, preheating temperature is 500 ℃-1000 ℃, and be 1-5 hour warm up time;
2), in charging, the micro computer integrated control system compensates automatically to the tetanic convective heating of the tetanic convective heating kiln temperature of electricity electricity automatically, keeps constant temperature in the kiln, thermostat temperature is 500 ℃-1000 ℃;
3), be provided with the moving shredding unit of fax in the electric tetanic convective heating kiln, the electrically heated while in kiln, the shredding unit entry into service is moved in fax, and pain phosphorus gypsum in the kiln is dispersed as powdery, makes its thermally equivalent.
3. electrical heating method for chemical gypsum as claimed in claim 2, it is characterized in that: the tetanic convective heating kiln of described electricity is connected with the backflow collector, described backflow collector connects sack cleaner, in the electrically heated process, the part solid particulate is taken kiln out of with hot gas flow and is entered the backflow collector in the kiln, overwhelming majority solid particulate is transmitted back in the kiln by the backflow collector after the backflow collector is collected, the flue gas of being discharged by the backflow collector enters sack cleaner, and the flue gas after the dedusting is sent into smoke stack emission through induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010127579 CN101798193A (en) | 2010-03-19 | 2010-03-19 | Electrical heating method for chemical gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010127579 CN101798193A (en) | 2010-03-19 | 2010-03-19 | Electrical heating method for chemical gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101798193A true CN101798193A (en) | 2010-08-11 |
Family
ID=42594058
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010127579 Pending CN101798193A (en) | 2010-03-19 | 2010-03-19 | Electrical heating method for chemical gypsum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851262A (en) * | 2019-03-29 | 2019-06-07 | 郑州三迪建筑科技有限公司 | A kind of application method of ardealite calciner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915883A (en) * | 2006-09-06 | 2007-02-21 | 山东天力干燥设备有限公司 | Technique for airflow drying, and calcining desulfurized gypsum |
| CN101157526A (en) * | 2007-09-26 | 2008-04-09 | 严登畅 | Device for calcining gypsum in highland and method for calcining gypsum |
| CN101597147A (en) * | 2009-07-06 | 2009-12-09 | 贵州安捷能建筑材料发展有限公司 | The processing method of a kind of phosphogypsum, desulphurization gypsum for preparing high strength plaster of Paris |
-
2010
- 2010-03-19 CN CN 201010127579 patent/CN101798193A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915883A (en) * | 2006-09-06 | 2007-02-21 | 山东天力干燥设备有限公司 | Technique for airflow drying, and calcining desulfurized gypsum |
| CN101157526A (en) * | 2007-09-26 | 2008-04-09 | 严登畅 | Device for calcining gypsum in highland and method for calcining gypsum |
| CN101597147A (en) * | 2009-07-06 | 2009-12-09 | 贵州安捷能建筑材料发展有限公司 | The processing method of a kind of phosphogypsum, desulphurization gypsum for preparing high strength plaster of Paris |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851262A (en) * | 2019-03-29 | 2019-06-07 | 郑州三迪建筑科技有限公司 | A kind of application method of ardealite calciner |
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Application publication date: 20100811 |