CN100441508C - New technique for refining filler of calcium carbonate from lime mud - Google Patents
New technique for refining filler of calcium carbonate from lime mud Download PDFInfo
- Publication number
- CN100441508C CN100441508C CNB2007100343124A CN200710034312A CN100441508C CN 100441508 C CN100441508 C CN 100441508C CN B2007100343124 A CNB2007100343124 A CN B2007100343124A CN 200710034312 A CN200710034312 A CN 200710034312A CN 100441508 C CN100441508 C CN 100441508C
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- white clay
- expansion
- lime
- wadding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Paper (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
This invention relates to a new process for refining calcium carbonate filler from white mud. The process comprises: preparing the raw materials, washing, roughly screening, homogenizing, deflocculating, carbonizing, finely screening, and storing. In the process, homogenizing, deflocculating, carbonizing are accomplished in a single step. Calcium carbonate has a particle size D50 of 3.0-7.0 mums, and an average particle size of 5.5-8.5 mums. The recovered lightweight calcium carbonate has whiteness higher than 89% ISO, Ph value of 8.4-10.5, sedimentation volume greater than or equal to 2.6 mL/g, and slurry calcium carbonate concentration of 14-16%. The product is qualified for use in high-class writing paper, and the cost is only 1/3 that of commercialized lightweight calcium carbonate.
Description
One, technical field:
The present invention relates to the by product---new technique for refining filler of calcium carbonate from lime mud of generation in a kind of papermaking production.
Two, background technology:
" resource " is the two big factors that restrict the paper industry development now with " environmental protection ".Black liquid is the most serious pollution, and it is to administer the fundamental way that black liquid pollutes that alkali reclaims, and reclaims the key subjects that must solve but the secondary pollution that a large amount of alkaline scrap materials (white clay) that the alkali recovery produces cause is an alkali.Alkali technique pulp alkali reclaims the white clay that the causticization operation is discharged, and by incinerating unslaked lime again, causticization can recycle.The alkaline straw-pulp white clay, because the dioxide-containing silica height, incinerating is unslaked lime again, causticization can not recycle.China is a straw pulp big country, and the white clay that straw pulp alkali reclaims the causticization operation mostly outwards discharges, and not only wastes resource, causes severe environmental pollution simultaneously.Though China papermaker is doing a large amount of work aspect the comprehensive utilization of white clay, as white clay is become cement with mixed calcinings such as clay, Wingdales, the white clay replacing lime is made building mortar, and white clay and flyash are done concrete or the like.But all too high or technical problem never forms scale production because of processing cost, still is in the exploratory stage.Grass plasmoid alkali reclaims this difficult problem of generation white clay secondary pollution and is perplexing papermaking enterprise always.
Hunan Tag woods paper group company has just carried out deep research and Application and Development to the white clay utilization since last century, has obtained and has made us advising the purpose achievement.Yuanjiang paper industry company of Hunan Tag woods paper group took the lead in adopting carborization technology that white clay is handled in 1985, had set up domestic article one white clay carborization process for producing line, and the filler that the pulpous state lime carbonate of production replaces talcum powder to make offset paper is succeedd.Hunan Tag woods paper group Yueyang paper industry stock company in 1999 and how tame scientific research institutions unite tackling key problem.Reclaim at carborization on the basis of light calcium carbonate Technology, change thinking, change traditional white clay is handled afterwards the control of into process cleaning, the raw material of promptly exploring causticizing reaction carries out pre-treatment and secondary continuous causticizing Technology, make causticizing reaction when reclaiming caustic soda, also can reclaim out calcium carbonate product, this product is done the papermaking filler trial production and is succeedd basically on low speed paper machine.Yet above-mentioned two kinds of methods still are difficult to use and promote at present, and major cause is: first method facility investment height, and the lime carbonate whiteness of production is low, and material particular diameter is inhomogeneous, and the paper machine adds wet end chemistry instability in the process of filling out, and paper easily falls hair, dry linting; Second method is that the pretreatment quality of lime and green liquor is difficult to guarantee to reach processing requirement, secondary continuous causticizing Technology is in alkali recovery white slime refining filler of calcium carbonate possible in theory, but in producing, practice also have many technology to remain to be groped, lime carbonate whiteness, D50 particle diameter, median size and the commodity lime carbonate produced differ bigger, and using especially at the paper machine, also there are many technical problems in high-speed paper machine on using.Therefore, Yueyang paper industry stock company is on the basis of summing up above-mentioned two kinds of white claies recovery filler level lime carbonate technology, to probing boldly and innovate on operations such as traditional washing, the removal of impurities of sieving, carbonating processing, the grinding recovery filler level lime carbonate technology, invent a kind of new technique for refining filler of calcium carbonate from lime mud, and set up one 80～100 ton per day new technique for refining filler of calcium carbonate from lime mud production line.The calcium carbonate product success of producing with this novel process just is used for adding on the middle and high fast paper machine filling out produces middle and high shelves such as high-quality colour printing newsprint, light weight coated paper, pigment treated offset paper, light-duty printing paper paper products, and the refining filler of calcium carbonate from lime mud quality product reaches or indivedual quality index is better than the commodity fine particle calcium carbonate.And production cost has only about 1/3rd of commodity light calcium carbonate, has remarkable economical, society and environmental benefit.Company is moving the refining filler of calcium carbonate from lime mud production line that the refining filler of calcium carbonate from lime mud production line is domestic and international article one industrially scalable at present.
Three, summary of the invention:
At the white clay major ingredient is lime carbonate (accounting for about 85%), other material of a spot of Calucium Silicate powder (accounting for about 10%) and trace, physics such as proportion, the chemical property of Calucium Silicate powder and lime carbonate are all closely similar, will be with mechanical separation very because of difficulty, this is another reason that white clay can't be refined into commodity lime carbonate, and Calucium Silicate powder is not had the paper industry of excessive demand substantially, exploitation is fully feasible as filler.The causticization superfluous lime is less than 5% in the alkali recovery causticization operation as long as tightened control, and the calcium oxide of white clay remnants is less than 1.0%, and regulating PH for the white clay carbonating is not a subject matter just, only needs to assist carbonization can reach requirement.Key is will separate wadding to the white clay expansion to make calcium carbonate granule in a certain scope, can satisfy papermaking and add the demand of filling out and get final product.Therefore, reclaim on the lime carbonate basis in conventional processes such as washing, the removal of impurities of sieving, carbonating processing, grindings, invented a kind of new technique for refining filler of calcium carbonate from lime mud, its principal character is that expansion is separated wadding and added auxiliary carbonation step and finish, and can make white clay purified calcium carbonate granule particle diameter, shape and pH value satisfy paper making wet part and add the requirement of filling out technology.
Technical problem to be solved by this invention is realized by following technical scheme:
A kind of new technique for refining filler of calcium carbonate from lime mud comprises and gets the raw materials ready, clarifies that wadding is separated in washing, scalping, expansion and carbonization, fine screen and finished product store; It is characterized in that: expansion is separated wadding and carbonation step is finished, and feeds CO when promptly the white clay expansion is separated wadding
2Gas carries out carbonization, and after expansion was separated wadding and carbonization, lime carbonate meta particle diameter D50 was 3.0～7.0 μ m, and median size is 5.5～8.5 μ m.Selected back lime carbonate whiteness reaches more than the 89%IS0 pH:8.4～10.5.
The main technique technical qualification: expansion is separated wadding and the carbonization technique condition is: carbon dioxide gas pressure: 2.5～3.5kg, and white clay concentration is 14～18%, temperature is 40～60 degrees centigrade; Thick grit number is 80～150 orders, and smart grit number is 200～325 orders.
The present invention on the basis of reclaiming lime carbonate technology in conjunction with traditional white clay expansion is separated wadding and carbonation step is finished, and its Production Flow Chart is simple, and technology controlling and process is flexible, and especially the key index settling volume can be adjusted according to demand.
1. get the raw materials ready: get the raw materials ready 70～90 ℃ of temperature of white clay, concentration 20～25%, whiteness 80%～85%ISO;
2. clarification washing: adopt the washing of pre-hanging filter or lime mud folter, intersegmental diffusion after the clarification again, reclaim residual alkali, reduce white clay pH value;
3. scalping: screen cloth 80～150 orders, adopt and revolve equipment such as the sieve that shakes, remove the thick slag of macrobead, screenings (120 order) is less than 2.5%;
4. expansion is separated wadding and carbonization: carbon dioxide gas pressure: 2.5～3.5kg, and white clay concentration is 14～18%, temperature is 50～60 degrees centigrade;
Before expansion is separated wadding and carbonization:
D50: D50 is 2.0～7.5 μ m, and median size is 7.5～13.5 μ m, settling volume: 2.0～2.2ml/g, pH value: 9～13.
After expansion is separated wadding and carbonization:
D50: D50 is 3.0～7.0 μ m, median size 5.5～8.5 μ m, settling volume: 2.6～3.5ml/g, pH value: 9～1.05.
Expansion is separated the interpolation quantity that wadding only need determine to separate the wadding medium, just can determine calcium carbonate granule change of size size, can satisfy the needs of different paper machines, different paper products.
5. fine screen: screen cloth 200～325 orders, adopt the equipment such as the sieve that shakes that revolve, remove tiny colored particles such as removing little buckwheat coal contained in the white clay, ashes, carbon black, screenings (325 order) is less than 0.5%.
6. finished product stores: the lime carbonate whiteness is greater than 89%ISO, and the finished product storage tanks need dispose agitator, and finished product can pumping paper machine room auxiliary material center.
Four, description of drawings:
Fig. 1 is a technological process block-diagram of the present invention.
Five, embodiment:
As shown in Figure 1, the white clay of causticization operation is delivered to and is clarified washing in the settler, and the clarification back pumps into the white clay groove with membrane pump, stirs and adjusts to white mud concentration 20%.Clay wash is sent into the pre-hanging washing machine of white clay, the dried mud degree 55% of mud extraction, and white clay falls into thick white clay groove, adds hot water, is diluted to 18%.Clear liquid send alkali to reclaim, and reclaims residual alkali.Again thick white clay groove white clay is sent into one-level 100 orders and revolve the sieve that shakes, remove the thick slag of macrobead.Preliminary remove in the white clay not by the perfect combustion thing, tiny foreign material such as coal grain, ashes, carbon black, carbon granules, oil smoke.White clay enters the preceding white clay groove of mill, send white clay to advance cracking flossing machine again and also feeds CO simultaneously
2Gas carries out carbonization, adjusts the medium add-on according to the material particles size.Mill back white clay enters mill back white clay groove, white clay is pumped into 250 order fine screens again, and finished product enters and reclaims the fine particle calcium carbonate storage tank.The pH value of measuring white clay is 10, and white clay is transferred dense to 15%, enters pan tank, promptly is sent to the paper machine and does the light calcium carbonate filler, joins and copies high-grade double gummed paper, and gained filler light calcium carbonate finished product is measured by analysis, and the result is as follows:
Whiteness: 90.02%ISO pH value: 10
Settling volume: 2.8ml/g 325 screen residues: less than 0.1%
D50: D50 is 4.0 μ m, median size 6.5 μ m.
Claims (4)
1, a kind of new technique for refining filler of calcium carbonate from lime mud comprises and gets the raw materials ready, clarifies that wadding is separated in washing, scalping, expansion and carbonization, fine screen and finished product store; It is characterized in that: expansion is separated wadding and carbonation step is finished, and feeds CO when promptly the white clay expansion is separated wadding
2Gas carries out carbonization, and after expansion was separated wadding and carbonization, lime carbonate meta particle diameter D50 was 3.0～7.0 μ m, and median size is 5.5～8.5 μ m.
2, new technique for refining filler of calcium carbonate from lime mud according to claim 1 is characterized in that: expansion is separated wadding and the carbonization technique condition is: carbon dioxide gas pressure: 2.5～3.5kg, and white clay concentration is 14～18%, temperature is 40～60 degrees centigrade.
3, new technique for refining filler of calcium carbonate from lime mud according to claim 1 is characterized in that: thick grit number is 80～150 orders.
4, new technique for refining filler of calcium carbonate from lime mud according to claim 1 is characterized in that: smart grit number is 200～325 orders, and finished product lime carbonate whiteness reaches more than the 89%IS0, pH value: 8.4～10.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100343124A CN100441508C (en) | 2007-01-21 | 2007-01-21 | New technique for refining filler of calcium carbonate from lime mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100343124A CN100441508C (en) | 2007-01-21 | 2007-01-21 | New technique for refining filler of calcium carbonate from lime mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101003383A CN101003383A (en) | 2007-07-25 |
| CN100441508C true CN100441508C (en) | 2008-12-10 |
Family
ID=38702820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100343124A Active CN100441508C (en) | 2007-01-21 | 2007-01-21 | New technique for refining filler of calcium carbonate from lime mud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100441508C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391794B (en) * | 2008-10-24 | 2010-06-09 | 魏湘 | Novel method for preparing light calcium carbonate by recovering solid white slime through alkaline pulping |
| WO2014086048A1 (en) * | 2012-12-09 | 2014-06-12 | 李广 | High-concentration carbonation method for adjusting shape of lime mud (calcium carbonate) particles |
| CN103882765B (en) * | 2012-12-24 | 2016-08-24 | 中国制浆造纸研究院 | A kind of method improving white mud calcium carbonate filled paper sizability |
| CN103193239A (en) * | 2013-02-27 | 2013-07-10 | 陕西科技大学 | Improved preparation method for combined production of calcium silicate filling material for papermaking by using fly ash |
| CN103387253A (en) * | 2013-05-10 | 2013-11-13 | 岳阳林纸股份有限公司 | Carbonization process for white mud by using flue gas of alkali recovery boiler |
| CN103509377B (en) * | 2013-08-23 | 2015-11-25 | 中国制浆造纸研究院 | Calcium carbonate pigment that a kind of alkali recovery white slime is refining and preparation method thereof |
| CN108330729B (en) * | 2018-02-11 | 2021-04-20 | 山东太阳纸业股份有限公司 | White clay filler and application thereof in cultural paper machine |
| CN108793215A (en) * | 2018-05-30 | 2018-11-13 | 福建鼎盛元环保科技有限公司 | A kind of production technology producing whiting using pulping and paper-making white clay |
| CN108677598A (en) * | 2018-06-26 | 2018-10-19 | 陕西科技大学 | A kind of preparation method of alkali recovery white slime fine paper pearl filler |
| CN109279637B (en) * | 2018-09-21 | 2021-06-25 | 岳阳林纸股份有限公司 | Method for refining filler calcium carbonate by recovering white mud from chemical sulfate wood pulp alkali |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4251351A (en) * | 1977-07-27 | 1981-02-17 | English Clays Lovering Pochin & Co., Ltd. | Processing of calcium carbonate minerals |
| CN1349861A (en) * | 2001-12-19 | 2002-05-22 | 崔木春 | White clay recovering process |
| CN1441117A (en) * | 2002-02-26 | 2003-09-10 | 李清明 | Technological process of recovering white clay to produce stuffing calcium carbonate |
| CN1598130A (en) * | 2004-07-27 | 2005-03-23 | 岳阳纸业股份有限公司 | Technology for mfg, high whiteness paper making filling light calcium carbonate recovered from lime mud |
-
2007
- 2007-01-21 CN CNB2007100343124A patent/CN100441508C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4251351A (en) * | 1977-07-27 | 1981-02-17 | English Clays Lovering Pochin & Co., Ltd. | Processing of calcium carbonate minerals |
| CN1349861A (en) * | 2001-12-19 | 2002-05-22 | 崔木春 | White clay recovering process |
| CN1441117A (en) * | 2002-02-26 | 2003-09-10 | 李清明 | Technological process of recovering white clay to produce stuffing calcium carbonate |
| CN1598130A (en) * | 2004-07-27 | 2005-03-23 | 岳阳纸业股份有限公司 | Technology for mfg, high whiteness paper making filling light calcium carbonate recovered from lime mud |
Non-Patent Citations (4)
| Title |
|---|
| 汉阳造纸厂碱回收白泥治理技术研究与进展. 张汉平，周少华，李国洪.中华纸业，第02期. 1997 |
| 汉阳造纸厂碱回收白泥治理技术研究与进展. 张汉平，周少华，李国洪.中华纸业，第02期. 1997 * |
| 碱法草浆白泥精制碳酸钙作造纸填料. 李望南.中华纸业，第12期. 2002 |
| 碱法草浆白泥精制碳酸钙作造纸填料. 李望南.中华纸业，第12期. 2002 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101003383A (en) | 2007-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100441508C (en) | New technique for refining filler of calcium carbonate from lime mud | |
| CN101391794B (en) | Novel method for preparing light calcium carbonate by recovering solid white slime through alkaline pulping | |
| CN101020182B (en) | Process of comprehensively utilizing caustic sludge from papermaking industry | |
| EP2580161B1 (en) | Method and apparatus for in-line production of milk of lime into an in-line production process of pcc arranged in connection with a fibrous web machine | |
| CN102976387B (en) | Improved preparation technology of white mud calcium carbonate for papermaking filler | |
| CN102653411B (en) | Process for preparing light-weight calcium carbonate by recycling white mud by alkali | |
| CN103509377B (en) | Calcium carbonate pigment that a kind of alkali recovery white slime is refining and preparation method thereof | |
| CN101700901A (en) | Novel method for producing light calcium carbonate (CaCO3) from white clay generated from alkali recovering in paper-making industry | |
| CN106219586A (en) | A kind of be raw material production nanometer grade calcium carbonate with carbide slag device and method | |
| CN108840361B (en) | A method of high-purity calcium carbonate is refined using green liquor causticizing | |
| CN101445249B (en) | Method for bleaching high-concentration kaolin pulp | |
| CN1844569A (en) | Wine lees fiber paper pulp and paper made thereof | |
| CN101186326A (en) | Method for preparing calcium carbonate from reclaimed white mud of straw pulp production alkali | |
| CN1323211C (en) | Paper making mineral composite retention aid and preparing process and application thereof | |
| CN1169634C (en) | White clay recovering process | |
| CN107237193B (en) | A method of waste paper pulp-making is squeezed out using screw machine | |
| CN1386927A (en) | Technological system for producing environment protection type paper pulp | |
| CN103215849A (en) | Method for recycling white-clay refined paper calcium carbonate filler by improved soda-process pulping alkali | |
| CN111689509B (en) | Device and method for preparing micro-powder calcium carbonate by using carbide slag | |
| CN109279637B (en) | Method for refining filler calcium carbonate by recovering white mud from chemical sulfate wood pulp alkali | |
| CN1441117A (en) | Technological process of recovering white clay to produce stuffing calcium carbonate | |
| CN101108390A (en) | White clay recycling process | |
| CN101837993A (en) | Method for producing sodium hydroxide and co-producing calcium carbonate by using carbide slag | |
| CN102154889A (en) | Recycled industrial symbiotic treatment method of wastewater in alkaline paper-making process | |
| CN1587508A (en) | Method for producing light calcium carbonate product with white mud |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yueyang Huatai Resources Development and Utilization Co., Ltd. Assignor: Yueyang Paper-making Industry Co., Ltd. Contract record no.: 2010430000100 Denomination of invention: New technique for refining filler of calcium carbonate from lime mud Granted publication date: 20081210 License type: Exclusive License Open date: 20070725 Record date: 20100820 |
|
| C56 | Change in the name or address of the patentee |
Owner name: YUEYANG LINZHI CO., LTD. Free format text: FORMER NAME: YUEYANG PAPER-MAKING INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 414002 No. 1 Guangming Road, Yueyang, Hunan, Chenglingji Patentee after: Yueyang Forest & Paper Co., Ltd. Address before: 414002 No. 1 Guangming Road, Yueyang, Hunan, Chenglingji Patentee before: Yueyang Paper-making Industry Co., Ltd. |