CN101244900A - Method for producing calcium oxide with marble as raw material - Google Patents
Method for producing calcium oxide with marble as raw material Download PDFInfo
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- CN101244900A CN101244900A CNA2008100641414A CN200810064141A CN101244900A CN 101244900 A CN101244900 A CN 101244900A CN A2008100641414 A CNA2008100641414 A CN A2008100641414A CN 200810064141 A CN200810064141 A CN 200810064141A CN 101244900 A CN101244900 A CN 101244900A
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- calcium oxide
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- raw material
- marble
- marbles
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Abstract
The invention discloses a method which takes marbles as raw materials for producing calcium oxide and relates to a production method of the calcium oxide. The marbles having the content of the CaCO3 that is more than 95 percent and the whiteness that is higher than 92 percent are chosen as the raw material, and the marbles are broken into 20 to 300mm<3>; the ores are put into a tunnel kiln, a puffing kiln, a rolling plate kiln or a drawer kiln and are preheated for 6 to 10 hours in a preheating section, and the temperature in controlled under 0 to 600 DEG C, and then the ores are put into a calcination section and are heated and calcined for 8 to 12 hours by gas fuels or solid fuels, and the temperature is controlled under 600 to 1100 DEG C, finally the ores are put into a cooling section to be cooled. The method for producing calcium oxide of the invention solves the problem that fuels and raw materials are mixed together so that the calcium oxide cannot be produced by marbles in the traditional calcining craft. Under the non-selection circumstance, the effective purity can be increased by 5 percent and the whiteness can be increased by 9 percent by using marbles for producing the calcium oxide.
Description
Technical field
The present invention relates to a kind of production method of calcium oxide, being specifically related to a kind of is the method for raw material production calcium oxide with the marble.
Background technology
The produced in conventional processes calcium oxide is that to adopt Wingdale be raw material, and calcining process adopts shaft furnace, will calcine in Wingdale and solid fuel mixes or layering is packed into the kiln.Adopting marble in this way is raw material, then mixes and can't separate in fuel, lime-ash behind 500～800 ℃ of raw material crushings in calcination process.With Wingdale produce calcium oxide selected after, the efficient oxidation calcium can only reach about 90%, whiteness can only reach about 86%, rate of moisture absorption reduces.
Summary of the invention
The purpose of this invention is to provide a kind of is the method for raw material production calcium oxide with the marble, to overcome the problem that original method for calcinating exists.
The present invention selects CaCO for use
3Content is greater than 95%, and it is raw material that whiteness is higher than 92% marble, is broken into 20～300mm
3Ore is packed in tunnel furnace, the kiln of falling the cigarette, rolling plate kiln or the drawer kiln, preheating section preheating 6～10 hours, temperature is controlled at 0～600 ℃, enter the calcining section then, with geseous fuel or solid fuel heating and calcining 8～12 hours, temperature is controlled at 600～1100 ℃, enters cooling section at last and cools off.
The invention solves traditional calcining process fuel and raw material mixes and can not produce the difficult problem of calcium oxide with marble.Produce the effective purity of calcium oxide with marble and under the situation of not choosing, improve 5 percentage points, purity 〉=95%; Whiteness improves 9 percentage points, can reach more than 90%.
Embodiment
Embodiment one: steps such as selecting materials in the method that present embodiment is produced calcium oxide and the traditional processing technology, calcining are identical, that is: to contain CaCO
3Ore be raw material, heating and calcining generates CO
2And CaO, but in the specific practice of selecting materials with calcining process be: CaCO
3Content is greater than 95%, and it is raw material that whiteness is higher than 92% marble, is broken into 20～300mm
3Ore is packed in tunnel furnace, the kiln of falling the cigarette, rolling plate kiln or the drawer kiln, without shaft furnace; With geseous fuel or solid fuel heating and calcining, enter cooling section at last and cool off.Any of described geseous fuel liquefied gas, Sweet natural gas, coal gas or coal gas generation gas can.
One, adopt tunnel furnace: with the ore kiln car of packing into, preheating section preheating 8 hours, temperature was controlled at 100～600 ℃.Enter the calcining section then, calcined 10 hours, temperature is controlled at 600～1100 ℃.Enter cooling section at last, cooled off 4 hours.The temperature of each section is controlled automatically, guarantees that the CaO of kiln discharge does not have the burning of giving birth to, no burning.Do not need pick, utilization ratio 100%, the efficient oxidation calcium is greater than 95%, and whiteness is greater than 92%, and rate of moisture absorption is higher than 15% of calcium oxide that Wingdale becomes to produce.
Two, adopt the kiln of falling the cigarette: do interlayer with refractory materials in the kiln, put shelf on the interlayer, marble is placed on the shelf, geseous fuel is the uniform distribution burning on raw material.The temperature of each section, time requirement are identical with tunnel furnace.
Three, adopt the rolling plate kiln: raw material is packed on each flat board, and all the other requirements are same as tunnel furnace.
If four with coal or the calcining of coke solids fuel, must can get rid of CO with refractory materials is special
2The saggar splendid attire raw material of gas guarantees that the CaO that calcines out separates with the fuel lime-ash, does not pollute, and other requirement is same as tunnel furnace.
Claims (2)
1, is the method for raw material production calcium oxide with the marble, it is characterized in that described method is: select CaCO for use
3Content is greater than 95%, and it is raw material that whiteness is higher than 92% marble, is broken into 20～300mm
3Ore is packed in tunnel furnace, the kiln of falling the cigarette, rolling plate kiln or the drawer kiln, preheating section preheating 6～10 hours, temperature is controlled at 0～600 ℃, enter the calcining section then, with geseous fuel or solid fuel heating and calcining 8～12 hours, temperature is controlled at 600～1100 ℃, enters cooling section at last and cools off.
2, according to claim 1 is the method for raw material production calcium oxide with the marble, it is characterized in that described geseous fuel is liquefied gas, Sweet natural gas, coal gas or coal gas generation gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100641414A CN101244900A (en) | 2008-03-18 | 2008-03-18 | Method for producing calcium oxide with marble as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100641414A CN101244900A (en) | 2008-03-18 | 2008-03-18 | Method for producing calcium oxide with marble as raw material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101244900A true CN101244900A (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100641414A Pending CN101244900A (en) | 2008-03-18 | 2008-03-18 | Method for producing calcium oxide with marble as raw material |
Country Status (1)
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| CN (1) | CN101244900A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659157A (en) * | 2012-04-13 | 2012-09-12 | 曲玉珠 | Method for producing calcium oxide by use of calcite |
| CN102838152A (en) * | 2012-10-16 | 2012-12-26 | 刘立文 | Method for producing calcium oxide at high temperature |
| CN103351103A (en) * | 2013-07-10 | 2013-10-16 | 刘绍海 | Method for producing lime with marble thick liquid and powder |
| CN103553372A (en) * | 2013-10-29 | 2014-02-05 | 福建省建材进出口有限责任公司 | Method for producing lime by using waste Nan'an marble powder |
| CN105254192A (en) * | 2015-09-30 | 2016-01-20 | 长兴富强钙业有限公司 | Calcium oxide production technology |
| CN106380091A (en) * | 2016-08-31 | 2017-02-08 | 博广热能股份有限公司 | Method for calcining active lime |
| CN107285359A (en) * | 2017-08-10 | 2017-10-24 | 青阳县永诚钙业有限责任公司 | A kind of method that precipitated calcium carbonate is produced based on calcite |
| CN107416883A (en) * | 2017-09-13 | 2017-12-01 | 洛阳冀能新材料有限公司 | A kind of ore resource method of comprehensive utilization in calcium carbonate mine |
| CN110963719A (en) * | 2020-01-06 | 2020-04-07 | 张镇 | Method and device for preparing quicklime |
| CN112456822A (en) * | 2020-11-05 | 2021-03-09 | 杨恒武 | Production process of finished lime |
-
2008
- 2008-03-18 CN CNA2008100641414A patent/CN101244900A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659157A (en) * | 2012-04-13 | 2012-09-12 | 曲玉珠 | Method for producing calcium oxide by use of calcite |
| CN102838152A (en) * | 2012-10-16 | 2012-12-26 | 刘立文 | Method for producing calcium oxide at high temperature |
| CN102838152B (en) * | 2012-10-16 | 2014-12-24 | 刘立文 | Method for producing calcium oxide at high temperature |
| CN103351103A (en) * | 2013-07-10 | 2013-10-16 | 刘绍海 | Method for producing lime with marble thick liquid and powder |
| CN103553372A (en) * | 2013-10-29 | 2014-02-05 | 福建省建材进出口有限责任公司 | Method for producing lime by using waste Nan'an marble powder |
| CN105254192A (en) * | 2015-09-30 | 2016-01-20 | 长兴富强钙业有限公司 | Calcium oxide production technology |
| CN106380091A (en) * | 2016-08-31 | 2017-02-08 | 博广热能股份有限公司 | Method for calcining active lime |
| CN107285359A (en) * | 2017-08-10 | 2017-10-24 | 青阳县永诚钙业有限责任公司 | A kind of method that precipitated calcium carbonate is produced based on calcite |
| CN107416883A (en) * | 2017-09-13 | 2017-12-01 | 洛阳冀能新材料有限公司 | A kind of ore resource method of comprehensive utilization in calcium carbonate mine |
| CN110963719A (en) * | 2020-01-06 | 2020-04-07 | 张镇 | Method and device for preparing quicklime |
| CN112456822A (en) * | 2020-11-05 | 2021-03-09 | 杨恒武 | Production process of finished lime |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080820 |