CN106800306B - It is a kind of for purifying the calciner and its production technology that brighten natural anhydrous gypsum - Google Patents
It is a kind of for purifying the calciner and its production technology that brighten natural anhydrous gypsum Download PDFInfo
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- CN106800306B CN106800306B CN201710161907.XA CN201710161907A CN106800306B CN 106800306 B CN106800306 B CN 106800306B CN 201710161907 A CN201710161907 A CN 201710161907A CN 106800306 B CN106800306 B CN 106800306B
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- rotary kiln
- anhydrite
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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
- C01F11/46—Sulfates
- C01F11/468—Purification of calcium sulfates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of for purifying the calciner and its production technology that brighten natural anhydrous gypsum, it includes rotary kiln, and multiple heating inner cylinders are provided in the middle part of rotary kiln；Heating inner cylinder is fixed in rotary kiln by support frame；Independent work burner is provided on heating inner cylinder；Rotary kiln is provided with preheating burner in the outer end of heating inner cylinder.The object of the present invention is to provide a kind of for purifying the calciner and its production technology that brighten natural anhydrous gypsum, by disposably calcining, the whiteness of anhydrite can be made to reach 98% or more.
Description
Technical field
The present invention relates to a kind of calciner of anhydrous gypsum and production technologies, specially a kind of to brighten naturally for purifying
The calciner and its production technology of anhydrous gypsum.
Background technique
Natural anhydrous gypsum is also known as anhydrite, is a kind of important raw material of industry.High-quality, Gao Baidu anhydrite building
Building material, coating, rubber, food etc. has extensive figure.China's natural anhydrite is resourceful, but because of its own property
The restriction of matter and deep process technology, the anhydrite quality and whiteness of traditional handicraft processing can not meet modern industry application requirement,
Cause the low-grade anhydrite product saturation of domestic appearance superfluous, and the situation of medium-to-high grade anhydrite product relative shortage.
Summary of the invention
The purpose of the present invention is in view of the above problems, providing a kind of for purifying the calciner for brightening natural anhydrous gypsum
And its production technology can make the whiteness of anhydrite reach 98% or more by disposably calcining.
In order to achieve the above object, the technical solution adopted by the present invention is that:
One kind brightening natural anhydrous gypsum calciner for purifying, it includes rotary kiln 10, in the rotary kiln 10
Portion is provided with multiple heating inner cylinders 1002；The heating inner cylinder 1002 is fixed in rotary kiln 10 by support frame 1001；It is described
Independent work burner 1003 is provided on heating inner cylinder 1002；The rotary kiln 10 is provided in the outer end of heating inner cylinder 1002
Preheat burner 1004.
In preferable situation, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
It is a kind of for purifying the production technology for brightening natural anhydrous gypsum, it the following steps are included:
A, anhydrite enters feeding warehouse 1, is sent in level-one crusher 3 by batcher 2 and carries out primary fragmentation；
B, the anhydrite after primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enter back into secondary breaker 6 into
Row second-time breakage；
C, the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7, is fed through revolution through metering conveyor 9
Calcination processing is carried out in kiln 10, at 750~800 DEG C, calcination time is 90~120min for calcination temperature control；
D, enter after calcining anhydrite cooling in cooler 11；
E, anhydrite after cooling, which is sent in grinding device, grinds, up to high-purity anhydrous gypsum after detection.
In preferable situation, 10 operating procedure of rotary kiln in step c are as follows: preheating burner igniting carries out rotary kiln 10 pre-
Heat closes preheating burner when temperature reaches 750~800 DEG C, and preheating stops；Work burner igniting, and calcination temperature control exists
750-800℃。
In preferable situation, matter is added after the second elevator 7 is promoted to storage bin 8 in the anhydrite of second-time breakage in step c
Measure the NH that number is 5%4Cl is fed through in rotary kiln 10 through metering conveyor 9 after mixing evenly and carries out calcination processing.
In preferable situation, calcination temperature control in step c is at 800 DEG C, calcination time 90min.
Beneficial effects of the present invention:
1, it is provided by the invention it is a kind of brightens natural anhydrous gypsum calciner for purifying, hybrid forged using inside and outside
It burns to a crisp gypsum, when solving anhydrite and burning inside, whitening effect is poor, when heat consumption is low and outer burning, though whitening effect is good, heat
High problem is consumed, can be realized energy-saving and emission-reduction and improves the purpose of yield.
2, provided by the invention a kind of for purifying the production technology for brightening natural anhydrous gypsum, by disposably calcining,
The whiteness of anhydrite can be made to reach 98% or more.
3, provided by the invention a kind of for purifying the production technology for brightening natural anhydrous gypsum, solve calcining anhydrite
It is easy the difficult point of burning or underburnt in whitening, achievees the purpose that efficiently to brighten.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of rotary kiln in the present invention.
Fig. 3 is the structural schematic diagram of heating inner tube distribution in rotary kiln in the present invention.
Fig. 4 is the diagrammatic cross-section in Fig. 3 at A-A.
Label character described in figure indicates are as follows: 1, feeding warehouse；2, batcher；3, level-one crusher；4, the first elevator；5,
Buffer bin；6, secondary breaker；7, the second elevator；8, storage bin；9, metering conveyor；10, rotary kiln；11, cooler；
12, third elevator；1001, support frame；1002, inner cylinder is heated；1003, work burner；1004, burner is preheated.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing to the present invention into
Row detailed description, the description of this part be only it is exemplary and explanatory, should not have any limitation to protection scope of the present invention
Effect.
Embodiment 1:
One kind brightening natural anhydrous gypsum calciner for purifying, it includes rotary kiln 10, in the rotary kiln 10
Portion is provided with multiple heating inner cylinders 1002；The heating inner cylinder 1002 is fixed in rotary kiln 10 by support frame 1001；It is described
Independent work burner 1003 is provided on heating inner cylinder 1002；The rotary kiln 10 is provided in the outer end of heating inner cylinder 1002
Preheat burner 1004.
Preferably, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
It is a kind of for purifying the production technology for brightening natural anhydrous gypsum, it the following steps are included:
A, anhydrite enters feeding warehouse 1, is sent in level-one crusher 3 by batcher 2 and carries out primary fragmentation；
B, the anhydrite after primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enter back into secondary breaker 6 into
Row second-time breakage；
C, the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7, is fed through revolution through metering conveyor 9
Carry out calcination processing in kiln 10, calcination temperature control is at 750 DEG C, calcination time 90min；
D, enter after calcining anhydrite cooling in cooler 11；
E, anhydrite after cooling, which is sent in grinding device, grinds, up to high-purity anhydrous gypsum after detection.
Preferably, 10 operating procedure of rotary kiln in step c are as follows: preheating burner igniting preheats rotary kiln 10, to
When temperature reaches 750 DEG C, preheating burner is closed, preheating stops；Work burner igniting, and calcination temperature is controlled at 750 DEG C.
Preferably, mass parts are added after the second elevator 7 is promoted to storage bin 8 in the anhydrite of second-time breakage in step c
The NH that number is 5%4Cl is fed through in rotary kiln 10 through metering conveyor 9 after mixing evenly and carries out calcination processing.
Embodiment 2:
One kind brightening natural anhydrous gypsum calciner for purifying, it includes rotary kiln 10, in the rotary kiln 10
Portion is provided with multiple heating inner cylinders 1002；The heating inner cylinder 1002 is fixed in rotary kiln 10 by support frame 1001；It is described
Independent work burner 1003 is provided on heating inner cylinder 1002；The rotary kiln 10 is provided in the outer end of heating inner cylinder 1002
Preheat burner 1004.
Preferably, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
It is a kind of for purifying the production technology for brightening natural anhydrous gypsum, it the following steps are included:
A, anhydrite enters feeding warehouse 1, is sent in level-one crusher 3 by batcher 2 and carries out primary fragmentation；
B, the anhydrite after primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enter back into secondary breaker 6 into
Row second-time breakage；
C, the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7, is fed through revolution through metering conveyor 9
Carry out calcination processing in kiln 10, calcination temperature control is at 780 DEG C, calcination time 100min；
D, enter after calcining anhydrite cooling in cooler 11；
E, anhydrite after cooling, which is sent in grinding device, grinds, up to high-purity anhydrous gypsum after detection.
Preferably, 10 operating procedure of rotary kiln in step c are as follows: preheating burner igniting preheats rotary kiln 10, to
When temperature reaches 780 DEG C, preheating burner is closed, preheating stops；Work burner igniting, and calcination temperature is controlled at 780 DEG C.
Preferably, mass parts are added after the second elevator 7 is promoted to storage bin 8 in the anhydrite of second-time breakage in step c
The NH that number is 5%4Cl is fed through in rotary kiln 10 through metering conveyor 9 after mixing evenly and carries out calcination processing.
Embodiment 3:
One kind brightening natural anhydrous gypsum calciner for purifying, it includes rotary kiln 10, in the rotary kiln 10
Portion is provided with multiple heating inner cylinders 1002；The heating inner cylinder 1002 is fixed in rotary kiln 10 by support frame 1001；It is described
Independent work burner 1003 is provided on heating inner cylinder 1002；The rotary kiln 10 is provided in the outer end of heating inner cylinder 1002
Preheat burner 1004.
Preferably, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
It is a kind of for purifying the production technology for brightening natural anhydrous gypsum, it the following steps are included:
A, anhydrite enters feeding warehouse 1, is sent in level-one crusher 3 by batcher 2 and carries out primary fragmentation；
B, the anhydrite after primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enter back into secondary breaker 6 into
Row second-time breakage；
C, the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7, is fed through revolution through metering conveyor 9
Carry out calcination processing in kiln 10, calcination temperature control is at 800 DEG C, calcination time 120min；
D, enter after calcining anhydrite cooling in cooler 11；
E, anhydrite after cooling, which is sent in grinding device, grinds, up to high-purity anhydrous gypsum after detection.
Preferably, 10 operating procedure of rotary kiln in step c are as follows: preheating burner igniting preheats rotary kiln 10, to
When temperature reaches 800 DEG C, preheating burner is closed, preheating stops；Work burner igniting, and calcination temperature is controlled at 800 DEG C.
Preferably, mass parts are added after the second elevator 7 is promoted to storage bin 8 in the anhydrite of second-time breakage in step c
The NH that number is 5%4Cl is fed through in rotary kiln 10 through metering conveyor 9 after mixing evenly and carries out calcination processing.
The variation that carbon content in the anhydrite of front and back is calcined for verifying, will be through 800 DEG C of calcining 120min (dinectly bruning optimizations
Calcination condition) after anhydrite carry out the organic element analysis such as C, S, H, N, as a result with anhydrite raw ore powder organic element point
Analysis, obtains following data
| Samples weighing (g) | C content (%) | Amount containing S (%) | Amount containing H (%) | Leaded wastewater (%) |
| M1:0.980 | 1.696 | 15.951 | 0.262 | 0 |
| M2:0.954 | 0.970 | 17.176 | 0.089 | 0 |
From above data can, anhydrite content of C and H after 800 DEG C are calcined 120min significantly reduces, mainly by
In after high-temperature calcination, carbonaceous, moisture hydroxyl remove therewith in anhydrite, and remaining C is primarily present and undecomposed carbonate
In, such as CaCO3Deng, and H then exists and combines in water.The content of S is increased, mainly due to high-temperature calcination remove it is more
The brilliant position of impurity, anhydrite is improved, so the cold of S improves.Just because of the reduction of C content, therefore anhydrite whiteness increases.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
Used herein a specific example illustrates the principle and implementation of the invention, the explanation of above example
It is merely used to help understand method and its core concept of the invention.The above is only a preferred embodiment of the present invention, it answers
When pointing out due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement, retouching or variation can also be made, can also incited somebody to action
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or the not improved structure by invention
Think and technical solution directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (5)
1. a kind of for purifying the calciner for brightening natural anhydrous gypsum, it includes rotary kiln (10), which is characterized in that described
Multiple heating inner cylinders (1002) are provided in the middle part of rotary kiln (10)；The heating inner cylinder (1002) is solid by support frame (1001)
It is scheduled in rotary kiln (10)；Independent work burner (1003) is provided on the heating inner cylinder (1002)；The rotary kiln
(10) outer end of heating inner cylinder (1002) is provided with preheating burner (1004)；The quantity of heating inner cylinder (1002) is 3,
Arrangement triangular in shape.
2. using described in claim 1 a kind of for purifying the production technology for brightening the calciner of natural anhydrous gypsum,
Be characterized in that, it the following steps are included:
A, anhydrite enters feeding warehouse (1), is sent in level-one crusher (3) by batcher (2) and carries out primary fragmentation；
B, the anhydrite after primary fragmentation is promoted to buffer bin (5) through the first elevator (4), enters back into secondary breaker (6)
Carry out second-time breakage；
C, the anhydrite of second-time breakage is promoted to storage bin (8) through the second elevator (7), is fed through back through metering conveyor (9)
Calcination processing is carried out in rotary kiln (10), at 750~800 DEG C, calcination time is 90~120min for calcination temperature control；
D, enter after calcining anhydrite cooling in cooler (11)；
E, anhydrite after cooling, which is sent in grinding device, grinds, up to high-purity anhydrous gypsum after detection.
3. production technology according to claim 2, which is characterized in that rotary kiln (10) operating procedure in step c are as follows: pre-
Hot burner igniting preheats rotary kiln (10), when temperature reaches 750~800 DEG C, closes preheating burner, preheating stops；
Work burner igniting, and calcination temperature is controlled at 750~800 DEG C.
4. production technology according to claim 2, which is characterized in that the anhydrite of second-time breakage is mentioned through second in step c
After liter machine (7) is promoted to storage bin (8), the NH that mass fraction is 5% is added4Cl, after mixing evenly, through metering conveyor (9)
It is fed through in rotary kiln (10) and carries out calcination processing.
5. the production technology according to any one of claim 2~3, which is characterized in that the calcination temperature control in step c
System is at 800 DEG C, calcination time 90min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161907.XA CN106800306B (en) | 2017-03-17 | 2017-03-17 | It is a kind of for purifying the calciner and its production technology that brighten natural anhydrous gypsum |
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| CN201710161907.XA CN106800306B (en) | 2017-03-17 | 2017-03-17 | It is a kind of for purifying the calciner and its production technology that brighten natural anhydrous gypsum |
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| CN106800306A CN106800306A (en) | 2017-06-06 |
| CN106800306B true CN106800306B (en) | 2019-04-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103057A (en) * | 1987-11-21 | 1988-05-18 | 李培基 | Gypsum calcining method and equipment thereof |
| CN104016596A (en) * | 2014-05-27 | 2014-09-03 | 石家庄新华能源环保科技股份有限公司 | Rotary kiln with power generation device |
| CN105481275A (en) * | 2015-12-23 | 2016-04-13 | 盐城市富仕环保科技有限公司 | System and method for producing building gypsum by using industrial desulfation by-product gypsum |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229769A (en) * | 1998-03-24 | 1999-09-29 | 顾欣 | Tech. for baking gypsum and its heat resistant baking vessel |
| CN201237422Y (en) * | 2008-07-04 | 2009-05-13 | 康广民 | Horizontal formed coke drying machine |
| CN206735823U (en) * | 2017-03-17 | 2017-12-12 | 邵阳金拓科技开发有限公司 | It is a kind of to be used to purify the calciner for brightening natural anhydrous gypsum |
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- 2017-03-17 CN CN201710161907.XA patent/CN106800306B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103057A (en) * | 1987-11-21 | 1988-05-18 | 李培基 | Gypsum calcining method and equipment thereof |
| CN104016596A (en) * | 2014-05-27 | 2014-09-03 | 石家庄新华能源环保科技股份有限公司 | Rotary kiln with power generation device |
| CN105481275A (en) * | 2015-12-23 | 2016-04-13 | 盐城市富仕环保科技有限公司 | System and method for producing building gypsum by using industrial desulfation by-product gypsum |
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