CN106800306A - A kind of calciner and its production technology that natural anhydrous gypsum is brightened for purifying - Google Patents
A kind of calciner and its production technology that natural anhydrous gypsum is brightened for purifying Download PDFInfo
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- CN106800306A CN106800306A CN201710161907.XA CN201710161907A CN106800306A CN 106800306 A CN106800306 A CN 106800306A CN 201710161907 A CN201710161907 A CN 201710161907A CN 106800306 A CN106800306 A CN 106800306A
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- rotary kiln
- anhydrite
- anhydrous gypsum
- purifying
- inner cylinder
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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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- Organic Chemistry (AREA)
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- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of calciner and its production technology that natural anhydrous gypsum is brightened for purifying, it includes rotary kiln, and multiple heating inner cylinders are provided with the middle part of rotary kiln；Heating inner cylinder is fixed in rotary kiln by support frame；Independent work burner is provided with heating inner cylinder；Rotary kiln is provided with preheating burner in the outer end of heating inner cylinder.It is an object of the invention to provide a kind of calciner and its production technology that natural anhydrous gypsum is brightened for purifying, by disposable calcining, the whiteness of anhydrite can be made to reach more than 98%.
Description
Technical field
The present invention relates to the calciner and production technology of a kind of anhydrous gypsum, specially one kind is brightened naturally for purification
The calciner and its production technology of anhydrous gypsum.
Background technology
Natural anhydrous gypsum, also known as anhydrite, is a kind of important raw material of industry.High-quality, the anhydrite of Baidu high are being built
Building the aspects such as material, coating, rubber, food has extensive figure.China's natural anhydrite aboundresources, 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 domestic low-grade anhydrite product saturation of appearance superfluous, and the situation of medium-to-high grade anhydrite product relative shortage.
The content of the invention
The purpose of the present invention is directed to problem above, there is provided a kind of calciner that natural anhydrous gypsum is brightened for purifying
And its production technology, by disposable calcining, the whiteness of anhydrite can be made to reach more than 98%.
To realize object above, the technical solution adopted by the present invention is：
One kind brightens natural anhydrous gypsum calciner for purification, and 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 with heating inner cylinder 1002；The rotary kiln 10 is provided with the outer end of heating inner cylinder 1002
Preheating burner 1004.
In the case of preferably, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
A kind of production technology that natural anhydrous gypsum is brightened for purifying, it is comprised the following steps：
A, anhydrite enter into feeding warehouse 1, and being sent in one-level disintegrating machine 3 by batcher 2 carries out primary fragmentation；
Anhydrite after b, primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enters back into secondary breaker 6 and enters
Row second-time breakage；
C, the anhydrite of second-time breakage are promoted to storage bin 8 through the second elevator 7, and revolution is fed through through metering conveyor 9
Calcination processing is carried out in kiln 10, at 750~800 DEG C, calcination time is 90~120min for calcining heat control；
Enter cooling in cooler 11 after d, calcining anhydrite；
Anhydrite after e, cooling is ground in being sent to lapping device, and high-purity anhydrous gypsum is obtained final product after detection.
In the case of preferably, the operating procedure of rotary kiln 10 in step c is：Preheating burner igniting carries out rotary kiln 10 pre-
Heat, when temperature reaches 750~800 DEG C, closes preheating burner, and preheating stops；Work burner igniting, calcining heat control exists
750-800℃。
In the case of preferably, after the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7 in step c, matter is added
Amount number is 5% NH4Cl, after stirring, being fed through in rotary kiln 10 through metering conveyor 9 carries out calcination processing.
In the case of preferably, the calcining heat in step c is controlled at 800 DEG C, and calcination time is 90min.
Beneficial effects of the present invention：
1st, one kind that the present invention is provided brightens natural anhydrous gypsum calciner for purification, employs inside and outside hybrid forge
Burn to a crisp gypsum, solve anhydrite in interior burning, whitening effect is poor, when heat consumption is low and burns outward, though whitening effect is good, heat
Consumption problem high, can realize energy-saving and emission-reduction and improve the purpose of yield.
2nd, a kind of production technology that natural anhydrous gypsum is brightened for purifying that the present invention is provided, by disposable calcining,
The whiteness of anhydrite can be made to reach more than 98%.
3rd, a kind of production technology that natural anhydrous gypsum is brightened for purifying that the present invention is provided, solves calcining anhydrite
The difficult point of easy burning or underburnt in whitening, reaches the purpose for efficiently brightening.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of rotary kiln in the present invention.
Fig. 3 is the structural representation for heating inner tube distribution in the present invention in rotary kiln.
Fig. 4 is the generalized section at A-A in Fig. 3.
Label character is expressed as described in figure：1st, feeding warehouse；2nd, batcher；3rd, one-level disintegrating machine；4th, the first elevator；5、
Buffer bin；6th, secondary breaker；7th, the second elevator；8th, storage bin；9th, metering conveyor；10th, rotary kiln；11st, cooler；
12nd, the 3rd elevator；1001st, support frame；1002nd, inner cylinder is heated；1003rd, work burner；1004th, burner is preheated.
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, the present invention is entered below in conjunction with the accompanying drawings
Row is described in detail, and the description of this part is only exemplary and explanatory, should not there is any limitation to protection scope of the present invention
Effect.
Embodiment 1：
One kind brightens natural anhydrous gypsum calciner for purification, and 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 with heating inner cylinder 1002；The rotary kiln 10 is provided with the outer end of heating inner cylinder 1002
Preheating burner 1004.
Preferably, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
A kind of production technology that natural anhydrous gypsum is brightened for purifying, it is comprised the following steps：
A, anhydrite enter into feeding warehouse 1, and being sent in one-level disintegrating machine 3 by batcher 2 carries out primary fragmentation；
Anhydrite after b, primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enters back into secondary breaker 6 and enters
Row second-time breakage；
C, the anhydrite of second-time breakage are promoted to storage bin 8 through the second elevator 7, and revolution is fed through through metering conveyor 9
Calcination processing is carried out in kiln 10, calcining heat is controlled at 750 DEG C, and calcination time is 90min；
Enter cooling in cooler 11 after d, calcining anhydrite；
Anhydrite after e, cooling is ground in being sent to lapping device, and high-purity anhydrous gypsum is obtained final product after detection.
Preferably, the operating procedure of rotary kiln 10 in step c is：Preheating burner igniting is preheated rotary kiln 10, is treated
When temperature reaches 750 DEG C, preheating burner is closed, preheating stops；Work burner igniting, calcining heat is controlled at 750 DEG C.
Preferably, after the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7 in step c, mass parts are added
Number is 5% NH4Cl, after stirring, being fed through in rotary kiln 10 through metering conveyor 9 carries out calcination processing.
Embodiment 2：
One kind brightens natural anhydrous gypsum calciner for purification, and 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 with heating inner cylinder 1002；The rotary kiln 10 is provided with the outer end of heating inner cylinder 1002
Preheating burner 1004.
Preferably, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
A kind of production technology that natural anhydrous gypsum is brightened for purifying, it is comprised the following steps：
A, anhydrite enter into feeding warehouse 1, and being sent in one-level disintegrating machine 3 by batcher 2 carries out primary fragmentation；
Anhydrite after b, primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enters back into secondary breaker 6 and enters
Row second-time breakage；
C, the anhydrite of second-time breakage are promoted to storage bin 8 through the second elevator 7, and revolution is fed through through metering conveyor 9
Calcination processing is carried out in kiln 10, calcining heat is controlled at 780 DEG C, and calcination time is 100min；
Enter cooling in cooler 11 after d, calcining anhydrite；
Anhydrite after e, cooling is ground in being sent to lapping device, and high-purity anhydrous gypsum is obtained final product after detection.
Preferably, the operating procedure of rotary kiln 10 in step c is：Preheating burner igniting is preheated rotary kiln 10, is treated
When temperature reaches 780 DEG C, preheating burner is closed, preheating stops；Work burner igniting, calcining heat is controlled at 780 DEG C.
Preferably, after the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7 in step c, mass parts are added
Number is 5% NH4Cl, after stirring, being fed through in rotary kiln 10 through metering conveyor 9 carries out calcination processing.
Embodiment 3：
One kind brightens natural anhydrous gypsum calciner for purification, and 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 with heating inner cylinder 1002；The rotary kiln 10 is provided with the outer end of heating inner cylinder 1002
Preheating burner 1004.
Preferably, the quantity of the heating inner cylinder 1002 is 3, arrangement triangular in shape.
A kind of production technology that natural anhydrous gypsum is brightened for purifying, it is comprised the following steps：
A, anhydrite enter into feeding warehouse 1, and being sent in one-level disintegrating machine 3 by batcher 2 carries out primary fragmentation；
Anhydrite after b, primary fragmentation is promoted to buffer bin 5 through the first elevator 4, enters back into secondary breaker 6 and enters
Row second-time breakage；
C, the anhydrite of second-time breakage are promoted to storage bin 8 through the second elevator 7, and revolution is fed through through metering conveyor 9
Calcination processing is carried out in kiln 10, calcining heat is controlled at 800 DEG C, and calcination time is 120min；
Enter cooling in cooler 11 after d, calcining anhydrite；
Anhydrite after e, cooling is ground in being sent to lapping device, and high-purity anhydrous gypsum is obtained final product after detection.
Preferably, the operating procedure of rotary kiln 10 in step c is：Preheating burner igniting is preheated rotary kiln 10, is treated
When temperature reaches 800 DEG C, preheating burner is closed, preheating stops；Work burner igniting, calcining heat is controlled at 800 DEG C.
Preferably, after the anhydrite of second-time breakage is promoted to storage bin 8 through the second elevator 7 in step c, mass parts are added
Number is 5% NH4Cl, after stirring, being fed through in rotary kiln 10 through metering conveyor 9 carries out calcination processing.
It is the change of carbon content in anhydrite before and after checking calcining, will be through 800 DEG C of calcining 120min (dinectly bruning optimizations
Calcination condition) after anhydrite carry out the organic element analysises such as C, S, H, N, as a result with anhydrite raw ore powder organic element point
Analysis, draws following data
| Samples weighing (g) | C content (%) | The amount containing S (%) | The 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 data above can, anhydrite content of C and H after 800 DEG C of calcining 120min is significantly reduced, mainly by
After through high-temperature calcination, carbonaceous, moisture hydroxyl are removed therewith in anhydrite, and remaining C is primarily present and undecomposed carbonate
In, such as CaCO3Deng, and H then exist with combine water in.The content of S has been raised, and is removed mainly due to high-temperature calcination more
Impurity, the brilliant position of anhydrite is improved, so the cold raising of S.Just because of the reduction of C content, therefore anhydrite whiteness is raised.
It should be noted that herein, term " including ", "comprising" or its any other variant be intended to non-row
His property is included, so that process, method, article or equipment including a series of key elements not only include those key elements, and
And also include other key elements being not expressly set out, or also include for this process, method, article or equipment institute are intrinsic
Key element.
Specific case used herein is set forth to principle of the invention and implementation method, the explanation of above example
It is only intended to help and understands the method for the present invention and its core concept.The above is only the preferred embodiment of the present invention, should
When pointing out due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, it is also possible to will
Above-mentioned technical characteristic is combined by rights；These improve retouching, change or combine, or the not improved structure that will be invented
Think and technical scheme directly applies to other occasions, be regarded as protection scope of the present invention.
Claims (6)
1. a kind of to brighten the calciner of natural anhydrous gypsum for purifying, it includes rotary kiln (10), it is characterised in that described
Multiple heating inner cylinder (1002) are provided with the middle part of rotary kiln (10)；Heating inner cylinder (1002) is solid by support frame (1001)
It is scheduled in rotary kiln (10)；Independent work burner (1003) is provided with heating inner cylinder (1002)；The rotary kiln
(10) outer end of heating inner cylinder (1002) is provided with preheating burner (1004).
2. it is a kind of to brighten the calciner of natural anhydrous gypsum for purifying, it is characterised in that the heating inner cylinder (1002)
Quantity is 3, arrangement triangular in shape.
3. it is according to claim 1 a kind of to brighten the production technology of natural anhydrous gypsum for purifying, it is characterised in that it
Comprise the following steps：
A, anhydrite enter into feeding warehouse (1), and being sent in one-level disintegrating machine (3) by batcher (2) carries out primary fragmentation；
Anhydrite after b, 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 are promoted to storage bin (8) through the second elevator (7), are 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 calcining heat control；
Enter cooling in cooler (11) after d, calcining anhydrite；
Anhydrite after e, cooling is ground in being sent to lapping device, and high-purity anhydrous gypsum is obtained final product after detection.
4. it is according to claim 1 a kind of to brighten the production technology of natural anhydrous gypsum for purifying, it is characterised in that step
Suddenly rotary kiln (10) operating procedure in c is：Preheating burner igniting is preheated rotary kiln (10), treat temperature reach 750~
At 800 DEG C, preheating burner is closed, preheating stops；Work burner igniting, calcining heat is controlled at 750-800 DEG C.
5. it is according to claim 3 a kind of to brighten the production technology of natural anhydrous gypsum for purifying, it is characterised in that step
After the anhydrite of second-time breakage is promoted to storage bin (8) through the second elevator (7) in rapid c, it is 5% to add mass fraction
NH4Cl, after stirring, being fed through in rotary kiln (10) through metering conveyor (9) carries out calcination processing.
6. a kind of according to any one in claim 3-4 brightens the production technology of natural anhydrous gypsum for purifying,
Characterized in that, the calcining heat in step c is controlled at 800 DEG C, calcination time is 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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| 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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| Publication Number | Publication Date |
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| CN106800306A true CN106800306A (en) | 2017-06-06 |
| CN106800306B CN106800306B (en) | 2019-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023122765A3 (en) * | 2021-12-23 | 2023-08-10 | Industrial Accessories Company | Indirect calcination method |
Citations (6)
| 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 |
| 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 |
| 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 |
| 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 |
-
2017
- 2017-03-17 CN CN201710161907.XA patent/CN106800306B/en active Active
Patent Citations (6)
| 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 |
| 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 |
| 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 |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023122765A3 (en) * | 2021-12-23 | 2023-08-10 | Industrial Accessories Company | Indirect calcination method |
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| CN106800306B (en) | 2019-04-19 |
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