CN106115756B - A kind of forming method of Powder Oxidation calcium - Google Patents
A kind of forming method of Powder Oxidation calcium Download PDFInfo
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- CN106115756B CN106115756B CN201610476465.3A CN201610476465A CN106115756B CN 106115756 B CN106115756 B CN 106115756B CN 201610476465 A CN201610476465 A CN 201610476465A CN 106115756 B CN106115756 B CN 106115756B
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- calcium
- powder oxidation
- oxidation calcium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
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- Life Sciences & Earth Sciences (AREA)
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- Treating Waste Gases (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Disclosed by the invention is a kind of forming method of Powder Oxidation calcium.This method is that by tablet press machine or other forcing presses Powder Oxidation calcium is pressed into definite shape, then pass to the gas containing carbon dioxide or vapor, after certain time, the flue gas of certain temperature is passed through, Powder Oxidation calcium is to be prepared as the calcium oxide with certain particle size and intensity；The Powder Oxidation calcium that using the present invention industry by-product gypsum can be used to produce sulfuric acid by-product replaces quick lime made from decomposition of limestone to produce calcium carbide, will expand the raw material sources of calcium carbide industry.
Description
Technical field
The present invention relates to the forming method of Powder Oxidation calcium, generated after being related specifically to gypsum and industry by-product gypsum decomposition
Lime powder forming method.
Background technology
Calcium oxide is the primary raw material for producing calcium carbide, and the production that Powder Oxidation calcium is directly used in electrothermal way calcium carbide can form close
The bed of material closed, poor air permeability makes to build the pressure in molten bath, and molten bath blanking is slow, and explosion accident may occur when serious, therefore calcium carbide is given birth to
Production requires that calcium oxide has certain particle diameter, and Powder Oxidation calcium cannot be directly used to the production of electrothermal way calcium carbide without processing.And
Industrial many processes can produce Powder Oxidation calcium, if making it have certain particle size after Powder Oxidation calcium being molded and strong
Degree, it is possible to for the production of calcium carbide, a new application approach will be opened for industrial by-product Powder Oxidation calcium.
Current electrothermal way production calcium carbide mainly utilizes the granular quick lime after the higher decomposition of limestone of quality（Calcium oxide）
Produced after being matched by a certain percentage with coke in electric arc furnaces, this method needs to exploit natural limestone ore deposit, often right
Ecological and environment causes certain destruction.If being avoided that exploitation natural limestone ore deposit, it is possible to avoid corresponding ecological and ring
Border is destroyed.And contain calcium in gypsum and industry by-product gypsum, a source of calcium oxide can be turned into.Gypsum and industry by-product gypsum
During production producing sulfuric acid and jointly cement, Powder Oxidation calcium will be produced, Powder Oxidation calcium is used to produce cement, but due to many former
Because its Technique Popularizing is difficult.If solving the formation problems of Powder Oxidation calcium, gypsum and industry by-product gypsum production sulfuric acid pair
The Powder Oxidation calcium of production can replace quick lime made from decomposition of limestone, will expand the raw material sources of calcium carbide industry, be calcium carbide
The raw material sources for being beneficial to ecological protection and environmental protection are found in production.
The content of the invention
The purpose of the present invention aims to provide a kind of forming method of Powder Oxidation calcium, increases the purposes of Powder Oxidation calcium, especially
It is to increase the purposes that gypsum and industry by-product gypsum decompose obtained Powder Oxidation calcium, reduces industry by-product gypsum heap and is rivals in a contest ring
The pollution in border, realizes its recycling.
Realize the technical scheme is that：
A kind of forming method of Powder Oxidation calcium,（1）Powder Oxidation calcium is suppressed by tablet press machine or other forcing presses
Shaping, then passes to vapor or containing the air of vapor or other gases, is finally passed through flue gas, that is, is had
There are certain particle size and the calcium oxide of intensity；
Or（2）Powder Oxidation calcium is compressing by tablet press machine or other forcing presses, then pass to carbon dioxide or
Person contains the air or other gases of carbon dioxide, is finally passed through flue gas, that is, obtains the oxygen with certain particle size and intensity
Change calcium；
Or（3）Powder Oxidation calcium is compressing by tablet press machine or other forcing presses, then pass to containing titanium dioxide
The mixed gas of carbon and vapor, or containing carbon dioxide and the mixing air of vapor or other gases, it is passed through flue
Gas, that is, obtain the calcium oxide with certain particle size and intensity；
Or（4）Powder Oxidation calcium is compressing by tablet press machine or other forcing presses, and then spray water mist, is passed through cigarette
Road gas, that is, obtain the calcium oxide with certain particle size and intensity；
Or（5）Powder Oxidation calcium is sprayed water in advance, it is compressing by tablet press machine or other forcing presses, then pass to two
Carbonoxide or containing the air of carbon dioxide or other gases, is passed through flue gas, that is, obtains with certain particle size and intensity
Calcium oxide.
The Powder Oxidation calcium particle diameter is the calcium oxide by the different-grain diameters of 30 mesh standard sieves, preferably 80-250 mesh it
Between calcium oxide powder.
The content of calcium oxide is CaO >=70%.
It is shaped as spherical, ellipsoid, cylindric, square block, other shapes or irregular block after calcium oxide shaping.
Described Powder Oxidation calcium can be calcium carbonate, dihydrate gypsum, semi-hydrated gypsum, anhydrous gypsum decompose be made, and
The powdery calcium oxide that any production technology is produced.
The forming method of above-mentioned Powder Oxidation calcium, the Powder Oxidation calcium, it is characterised in that：Particle diameter is to pass through 30 targets
The calcium oxide of the different-grain diameter of quasi- sieve, preferably the calcium oxide powder between the mesh of 80 mesh -250.
The forming method of above-mentioned Powder Oxidation calcium, the Powder Oxidation calcium, it is characterised in that：The content of calcium oxide is
CaO≥70%。
The forming method of above-mentioned Powder Oxidation calcium, its shape can be spherical, ellipsoid, cylinder after calcium oxide shaping
Shape, square block, other shapes or irregular block.
The beneficial effects of the invention are as follows：Powder Oxidation calcium is prepared into certain particle diameter and the calcium oxide of intensity by the present invention
Grain；The Powder Oxidation calcium that gypsum and industry by-product gypsum can be used to produce sulfuric acid by-product replaces raw stone made from decomposition of limestone
Grey next life produces electricity stone, realizes the recycling of industry by-product gypsum, has not only opened up the source of carbide raw material, and be many
The industry of by-product gypsum solves trouble and worry, can accomplish effective utilization of resource, while also helping environment and ecological protection.
Specific embodiment
Embodiment 1
By the mesh Powder Oxidation calcium of 80 mesh -200, spheroiding is suppressed in pressure forming machine, makes its a diameter of 10mm, is passed through
110 DEG C of air containing 20% vapor, take out after 20 minutes, are put into drying tower, are passed through 950 DEG C of flue gas, are taken after 20 minutes
Go out, Powder Oxidation calcium is the granular calcium oxide for being prepared as 10mm or so.
Embodiment 2
By the mesh Powder Oxidation calcium of 100 mesh -200, spheroiding is suppressed in pressure forming machine, makes its a diameter of 20mm, is passed through
110 DEG C of air containing 10% vapor and 10% carbon dioxide, take out after 20 minutes, are put into drying tower, are passed through 950 DEG C of flue
Gas, takes out, Powder Oxidation calcium is the granular calcium oxide for being prepared as 20mm or so after 20 minutes；
Embodiment 3
By the mesh Powder Oxidation calcium of 100 mesh -200, spheroiding is suppressed in pressure forming machine, makes its a diameter of 20mm, is passed through
105 DEG C of vapor, takes out after 5 minutes, is put into drying tower, is passed through 950 DEG C of flue gas, is taken out after 20 minutes, Powder Oxidation
Calcium is the granular calcium oxide for being prepared as 20mm or so；
Embodiment 4
By the mesh Powder Oxidation calcium of 100 mesh -200, spheroiding is suppressed in pressure forming machine, makes its a diameter of 20mm, by matter
Amount is taken out than the water smoke in its surface spray 3% after 2 minutes, storage a period of time, is put into drying tower, is passed through 950 DEG C of flue gas,
Taken out after 20 minutes, Powder Oxidation calcium is the granular calcium oxide for being prepared as 20mm or so；
Embodiment 5
By the mesh Powder Oxidation calcium of 100 mesh -200, first spray into mass ratio and be 1% water smoke, then be pressed into pressure forming machine
Ball-type, makes its a diameter of 20mm, is passed through 100 DEG C of air containing 10% carbon dioxide, is taken out after 20 minutes, is put into drying tower, leads to
Enter 950 DEG C of flue gas, taken out after 20 minutes, Powder Oxidation calcium is the granular calcium oxide for being prepared as 20mm or so.
Claims (5)
1. a kind of forming method of Powder Oxidation calcium, it is characterised in that：（1）Powder Oxidation calcium is passed through into tablet press machine or other pressures
Power machine is compressing, then passes to vapor or containing the air of vapor or other gases, is finally passed through flue gas,
Obtain the calcium oxide with certain particle size and intensity；
Or（2）Powder Oxidation calcium is compressing by tablet press machine or other forcing presses, then pass to carbon dioxide or contain
There are the air or other gases of carbon dioxide, be finally passed through flue gas, that is, obtain the oxidation with certain particle size and intensity
Calcium；
Or（3）Powder Oxidation calcium is compressing by tablet press machine or other forcing presses, then pass to containing carbon dioxide and
The mixed gas of vapor, or containing carbon dioxide and the mixing air of vapor or other gases, flue gas is passed through,
Obtain the calcium oxide with certain particle size and intensity；
Or（4）Powder Oxidation calcium is compressing by tablet press machine or other forcing presses, and then spray water mist, is passed through flue
Gas, that is, obtain the calcium oxide with certain particle size and intensity；
Or（5）Powder Oxidation calcium is sprayed water in advance, it is compressing by tablet press machine or other forcing presses, then pass to titanium dioxide
Carbon or containing the air of carbon dioxide or other gases, is passed through flue gas, that is, obtains the oxygen with certain particle size and intensity
Change calcium.
2. a kind of forming method of Powder Oxidation calcium according to claim 1, it is characterised in that：The Powder Oxidation calcium grain
Footpath is the calcium oxide of the different-grain diameter by 30 mesh standard sieves, preferably the calcium oxide powder between 80-250 mesh.
3. a kind of forming method of Powder Oxidation calcium according to claim 1, it is characterised in that：The content of calcium oxide is
CaO≥70%。
4. a kind of forming method of Powder Oxidation calcium according to claim 1, it is characterised in that：Its shape after calcium oxide shaping
Shape is spherical, ellipsoid, cylindric, square block, other shapes or irregular block.
5. a kind of forming method of Powder Oxidation calcium according to claim 1, it is characterised in that：Described Powder Oxidation calcium
Can be calcium carbonate, dihydrate gypsum, semi-hydrated gypsum, anhydrous gypsum decompose be made, and other production technologies produce powdery oxygen
Change calcium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610476465.3A CN106115756B (en) | 2016-06-27 | 2016-06-27 | A kind of forming method of Powder Oxidation calcium |
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| CN201610476465.3A CN106115756B (en) | 2016-06-27 | 2016-06-27 | A kind of forming method of Powder Oxidation calcium |
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| CN106115756B true CN106115756B (en) | 2017-10-17 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237538A (en) * | 1998-05-29 | 1999-12-08 | 鞍山钢铁集团公司 | Agglomeration forming technique of active time fine material |
| CN101721949A (en) * | 2008-10-20 | 2010-06-09 | 湖北省通山县通力镁业有限责任公司 | Method for granulating powdery active lime, special equipment and midbody |
-
2016
- 2016-06-27 CN CN201610476465.3A patent/CN106115756B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237538A (en) * | 1998-05-29 | 1999-12-08 | 鞍山钢铁集团公司 | Agglomeration forming technique of active time fine material |
| CN101721949A (en) * | 2008-10-20 | 2010-06-09 | 湖北省通山县通力镁业有限责任公司 | Method for granulating powdery active lime, special equipment and midbody |
Non-Patent Citations (1)
| Title |
|---|
| 混合工艺制造颗粒颜料;王浩等;《彩瓦与路砖》;20050228(第2期);32-33 * |
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