CN107459053A - A kind of production method of paste calcium carbonate - Google Patents
A kind of production method of paste calcium carbonate Download PDFInfo
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- CN107459053A CN107459053A CN201710682329.4A CN201710682329A CN107459053A CN 107459053 A CN107459053 A CN 107459053A CN 201710682329 A CN201710682329 A CN 201710682329A CN 107459053 A CN107459053 A CN 107459053A
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- calcium carbonate
- gained
- calcium
- paste
- production method
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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
- C01F11/18—Carbonates
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention provides a kind of production method of paste calcium carbonate, comprise the steps：(1) lime stone is obtained into calcium hydroxide through being calcined under conditions of 1,000 1500 DEG C；(2) calcium hydroxide of gained and water are with 1 after being calcined in step 1:5~8 ratio is continuously digested, and by rotary filter press operation and calcium hydroxide is gone into the removal of impurity with vibratory sieve；(3) step 2 gained calcium hydroxide is aged 5 10 hours, is then put into the carbonization operation that carbonators is carried out 2~5 hours, obtains calcium carbonate；(4) acid-base value of step 3 gained calcium carbonate is controlled in PH=7, the thick slurry of its gained is inserted into cyclone hydraulic separators and vibratory sieve, the removal of impurity is further gone, obtains calcium carbonate seminal fluid；(5) step 4 gained slurries are inserted into automatic centrifugal dewaterer, by controlling into slurry time, dewatering time and electrode rotating speed until obtaining satisfactory paste calcium carbonate.
Description
Technical field
The present invention relates to calcium carbonate manufacturing field, specifically a kind of production method of paste calcium carbonate.
Background technology
Paper-making sizing is changed to neutral sizing from acidity, and required calcium carbonate product is all to be added with water to 65-70% with dry powder to consolidate
It is coated with after content.In this way, the easy particle agglomeration of calcium carbonate in drying course, and carry out drying and need to expend the substantial amounts of energy
And environment is polluted.
The content of the invention
To solve the above problems, it is an object of the invention to provide a kind of production method of paste calcium carbonate, specific skill
Art scheme is：A kind of production method of paste calcium carbonate, comprises the steps：
(1) by lime stone through being calcined under conditions of 1000-1500 DEG C, calcination time is 16-24 hours, obtains hydrogen-oxygen
Change calcium；(2) calcium hydroxide of gained and water are with 1 after being calcined in step 1:5~8 ratio is continuously digested so that hydrogen-oxygen
The concentration for changing calcium is controlled in 10~17 ° of B é, and by rotary filter press operation and calcium hydroxide is gone into the removal of impurity with vibratory sieve；
(3) step 2 gained calcium hydroxide is aged 5-10 hours, is then put into the carbon that carbonators is carried out 2~5 hours
It is turned into industry, obtains calcium carbonate；
(4) by the control of the acid-base value of step 3 gained calcium carbonate in PH=7, will the thick slurry of its gained insert cyclone hydraulic separators with
Vibratory sieve, the removal of impurity is further gone, obtain calcium carbonate seminal fluid；
(5) step 4 gained slurries are inserted into automatic centrifugal dewaterer, by controlling into the slurry time, dewatering time and
Electrode rotating speed is until obtain satisfactory paste calcium carbonate.
Further, CaCO in the lime stone3Content >=99%.
Further, in the step 3, CO is controlled2Concentration >=20% (volume ratio), slurry temperature control in 20-40
℃；
Further, the time of entering to starch in step 5 is 4-6min, dewatering time 8-10min.
Beneficial effect：The invention provides a kind of production method of paste calcium carbonate, the production method of this calcium carbonate passes through
In concentration, temperature and the carbonization time of carbonisation adjustment slurry, paste calcium carbonate not easy to knot groups is easily scattered, in this way, through from
The heart is dehydrated, and product is directly used in papermaking operation, in this way, the step of needing drying in traditional papermaking operation to calcium carbonate is eliminated,
Pollution to environment is decreased so as to save the production energy.
Embodiment
The invention will now be further described with reference to specific embodiments, and following examples are only the optimal implementation of the present invention
Example, any restrictions are not formed to the scope of the present invention.It will be understood by those skilled in the art that without departing from the present invention's
The details and form of technical solution of the present invention can be modified or replaced under spirit and scope, but these modifications and replacement are equal
Fall within the scope of protection of the present invention.
Embodiment 1
A kind of production method of paste calcium carbonate, comprises the steps：
(1) by lime stone through being calcined under conditions of 1200 DEG C, calcination time is 20 hours, obtains calcium hydroxide；
(2) calcium hydroxide of gained and water are with 1 after being calcined in step 1:6 ratio is continuously digested so that hydrogen-oxygen
The concentration for changing calcium is controlled in 14 ° of B é, and by rotary filter press operation and calcium hydroxide is gone into the removal of impurity with vibratory sieve；
(3) step 2 gained calcium hydroxide is aged 8 hours, is then put into the carbonization that carbonators is carried out 5 hours and makees
Industry, obtain calcium carbonate；
(4) by the control of the acid-base value of step 3 gained calcium carbonate in PH=7, will the thick slurry of its gained insert cyclone hydraulic separators with
Vibratory sieve, the removal of impurity is further gone, obtain calcium carbonate seminal fluid；
(5) step 4 gained slurries are inserted into automatic centrifugal dewaterer, by controlling into the slurry time, dewatering time and
Electrode rotating speed is until obtain satisfactory paste calcium carbonate.
Further, CaCO in the lime stone3Content >=99%.
Further, in the step 3, CO is controlled2Concentration >=20% (volume ratio), slurry temperature control at 30 DEG C；
Further, the time of entering to starch in step 5 is 4-6min, dewatering time 8-10min.
Embodiment 2
A kind of production method of paste calcium carbonate, comprises the steps：
(1) by lime stone through being calcined under conditions of 1000 DEG C, calcination time is 16 hours, obtains calcium hydroxide；
(2) calcium hydroxide of gained and water are with 1 after being calcined in step 1:5 ratio is continuously digested so that hydrogen-oxygen
The concentration for changing calcium is controlled in 10 ° of B é, and by rotary filter press operation and calcium hydroxide is gone into the removal of impurity with vibratory sieve；
(3) step 2 gained calcium hydroxide is aged 5 hours, is then put into the carbonization that carbonators is carried out 2 hours and makees
Industry, obtain calcium carbonate；
(4) by the control of the acid-base value of step 3 gained calcium carbonate in PH=7, will the thick slurry of its gained insert cyclone hydraulic separators with
Vibratory sieve, the removal of impurity is further gone, obtain calcium carbonate seminal fluid；
(5) step 4 gained slurries are inserted into automatic centrifugal dewaterer, by controlling into the slurry time, dewatering time and
Electrode rotating speed is until obtain satisfactory paste calcium carbonate.
Further, CaCO in the lime stone3Content >=99%.
Further, in the step 3, CO is controlled2Concentration >=20% (volume ratio), slurry temperature control at 20 DEG C；
Further, the time of entering to starch in step 5 is 4-6min, dewatering time 8-10min.
Embodiment 3
A kind of production method of paste calcium carbonate, comprises the steps：
(1) by lime stone through being calcined under conditions of 1500 DEG C, calcination time is 24 hours, obtains calcium hydroxide；
(2) calcium hydroxide of gained and water are with 1 after being calcined in step 1:8 ratio is continuously digested so that hydrogen-oxygen
The concentration for changing calcium is controlled in 17 ° of B é, and by rotary filter press operation and calcium hydroxide is gone into the removal of impurity with vibratory sieve；
(3) step 2 gained calcium hydroxide is aged 10 hours, is then put into the carbonization that carbonators is carried out 5 hours and makees
Industry, obtain calcium carbonate；
(4) by the control of the acid-base value of step 3 gained calcium carbonate in PH=7, will the thick slurry of its gained insert cyclone hydraulic separators with
Vibratory sieve, the removal of impurity is further gone, obtain calcium carbonate seminal fluid；
(5) step 4 gained slurries are inserted into automatic centrifugal dewaterer, by controlling into the slurry time, dewatering time and
Electrode rotating speed is until obtain satisfactory paste calcium carbonate.
Further, CaCO in the lime stone3Content >=99%.
Further, in the step 3, CO is controlled2Concentration >=20% (volume ratio), slurry temperature control at 40 DEG C；
Further, the time of entering to starch in step 5 is 4-6min, dewatering time 8-10min.
Claims (4)
1. a kind of production method of paste calcium carbonate, it is characterised in that comprise the steps：
(1) by lime stone through being calcined under conditions of 1000-1500 DEG C, calcination time is 16-24 hours, obtains hydroxide
Calcium；
(2) calcium hydroxide of gained and water are with 1 after being calcined in step 1:5~8 ratio is continuously digested so that hydroxide
The concentration of calcium is controlled in 10~17 ° of B é, and by rotary filter press operation and calcium hydroxide is gone into the removal of impurity with vibratory sieve；
(3) step 2 gained calcium hydroxide is aged 5-10 hours, is then put into the carbonization that carbonators is carried out 2~5 hours and makees
Industry, obtain calcium carbonate；
(4) acid-base value of step 3 gained calcium carbonate is controlled in PH=7, the thick slurry of its gained is inserted into cyclone hydraulic separators with vibrating
Sieve, further goes the removal of impurity, obtains calcium carbonate seminal fluid；
(5) step 4 gained slurries are inserted into automatic centrifugal dewaterer, by controlling into slurry time, dewatering time and electrode
Rotating speed is until obtain satisfactory paste calcium carbonate.
A kind of 2. production method of paste calcium carbonate according to claim 1, it is characterised in that CaCO in the lime stone3Contain
Amount >=99%.
3. a kind of production method of paste calcium carbonate according to claim 1, it is characterised in that in the step 3, control CO2
Concentration >=20% (volume ratio), slurry temperature control at 20-40 DEG C.
4. the production method of paper grade (stock) paste calcium carbonate according to claim 1, it is characterised in that enter slurry in step 5
Time is 4-6min, dewatering time 8-10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682329.4A CN107459053A (en) | 2017-08-10 | 2017-08-10 | A kind of production method of paste calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682329.4A CN107459053A (en) | 2017-08-10 | 2017-08-10 | A kind of production method of paste calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107459053A true CN107459053A (en) | 2017-12-12 |
Family
ID=60547576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710682329.4A Pending CN107459053A (en) | 2017-08-10 | 2017-08-10 | A kind of production method of paste calcium carbonate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724379A (en) * | 2005-06-13 | 2006-01-25 | 建德市天石碳酸钙有限责任公司 | Process for producing toothpaste grade light-weight calcium carbonate |
| JP2011126740A (en) * | 2009-12-17 | 2011-06-30 | Taiheiyo Cement Corp | Method for producing vaterite type calcium carbonate |
| CN102432054A (en) * | 2011-09-28 | 2012-05-02 | 建德市云峰碳酸钙有限公司 | Method for producing light calcium carbonate slurry and light calcium carbonate paste |
| CN105016369A (en) * | 2014-12-30 | 2015-11-04 | 建德市云峰碳酸钙有限公司 | Production method for pasty calcium carbonate for papermaking |
-
2017
- 2017-08-10 CN CN201710682329.4A patent/CN107459053A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724379A (en) * | 2005-06-13 | 2006-01-25 | 建德市天石碳酸钙有限责任公司 | Process for producing toothpaste grade light-weight calcium carbonate |
| JP2011126740A (en) * | 2009-12-17 | 2011-06-30 | Taiheiyo Cement Corp | Method for producing vaterite type calcium carbonate |
| CN102432054A (en) * | 2011-09-28 | 2012-05-02 | 建德市云峰碳酸钙有限公司 | Method for producing light calcium carbonate slurry and light calcium carbonate paste |
| CN105016369A (en) * | 2014-12-30 | 2015-11-04 | 建德市云峰碳酸钙有限公司 | Production method for pasty calcium carbonate for papermaking |
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Application publication date: 20171212 |
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| RJ01 | Rejection of invention patent application after publication |