BRPI0903782C2 - recovery process, beneficiation and purification of calcium carbonate generated by the caustic process (cao + na2co3 + h2o -> caco3 + naoh + water) + naoh + water) of the pulp industry - Google Patents
recovery process, beneficiation and purification of calcium carbonate generated by the caustic process (cao + na2co3 + h2o -> caco3 + naoh + water) + naoh + water) of the pulp industryInfo
- Publication number
- BRPI0903782C2 BRPI0903782C2 BRPI0903782A BRPI0903782C2 BR PI0903782 C2 BRPI0903782 C2 BR PI0903782C2 BR PI0903782 A BRPI0903782 A BR PI0903782A BR PI0903782 C2 BRPI0903782 C2 BR PI0903782C2
- Authority
- BR
- Brazil
- Prior art keywords
- naoh
- water
- calcium carbonate
- beneficiation
- caco3
- Prior art date
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title abstract 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title abstract 7
- 229910000019 calcium carbonate Inorganic materials 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 4
- 238000000746 purification Methods 0.000 title abstract 3
- 238000011084 recovery Methods 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 3
- 239000003518 caustics Substances 0.000 title 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 3
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Removal Of Specific Substances (AREA)
- Paper (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
PROCESSO DE RECUPERAçãO, BENEFICIAMENTO E PURIFICAçãO DE CARBONATO DE CáLCIO GERADO PELO PROCESSO DE CAUSTIFICAçãO (CaO + Na2CO3+H20 -CaCO3 + NaOH + á água) DA INSDúSTRIA DE CELULOSE. O processo certiado de adição se refere a um aperfeiçoamento de um processo de recuperação, beneficiamento e purificação do resíduo (Ca- CO3) gerado do processo de prprodução da soda (NaOH) em carbonato de cálcio prepitado.CALCIUM CARBONATE RECOVERY, BENEFITING AND PURIFICATION PROCESS GENERATED BY THE CAUSATION (CaO + Na2CO3 + H20 -CaCO3 + NaOH + water) PROCESS OF THE CELLULOSIS INSDUSTRY. The certified addition process refers to an improvement of a waste recovery, beneficiation and purification process (Ca-CO3) generated from the soda (NaOH) preproduction process in prepared calcium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRC30903782A BRPI0903782E2 (en) | 2009-04-08 | 2009-04-08 | continuous and closed recovery, beneficiation and purification process of calcium carbonate sludge residue generated in the production of cellulose and resulting precipitated calcium carbonate product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRC30903782A BRPI0903782E2 (en) | 2009-04-08 | 2009-04-08 | continuous and closed recovery, beneficiation and purification process of calcium carbonate sludge residue generated in the production of cellulose and resulting precipitated calcium carbonate product |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| BRPI0903782A2 BRPI0903782A2 (en) | 2011-03-01 |
| BRPI0903782C1 BRPI0903782C1 (en) | 2011-12-20 |
| BRPI0903782C2 true BRPI0903782C2 (en) | 2011-12-20 |
| BRPI0903782E2 BRPI0903782E2 (en) | 2015-09-08 |
Family
ID=43622526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRC30903782A BRPI0903782E2 (en) | 2009-04-08 | 2009-04-08 | continuous and closed recovery, beneficiation and purification process of calcium carbonate sludge residue generated in the production of cellulose and resulting precipitated calcium carbonate product |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BRPI0903782E2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI1102992A2 (en) * | 2011-06-14 | 2013-11-19 | Ecofill Espec Em Tecnologia De Transf De Residuos Ltda | PRECIPITATED CALCIUM CARBONATE OBTAINING SYSTEM FROM CALCIUM CARBONATE SLUDGE WASTE; WASTE RECOVERY, BENEFIT AND PURIFICATION PROCESS Calcium Carbonate Sludge and Resulting Precipitated Calcium Carbonate Product |
| BR102014002485A2 (en) * | 2014-01-31 | 2015-04-14 | Ecofill Espec Em Tecnologia De Transf De Resíduos Ltda | A product to be used as an anti-pitch in the manufacture of pulp, which is the precipitated calcium carbonate known as "lime mud" generated in the process pulping system of the pulp industry |
-
2009
- 2009-04-08 BR BRC30903782A patent/BRPI0903782E2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0903782C1 (en) | 2011-12-20 |
| BRPI0903782E2 (en) | 2015-09-08 |
| BRPI0903782A2 (en) | 2011-03-01 |
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