CN101648718A - Method for producing massive sodium hydroxide and co-producing high-grade calcium carbonate by using carbide slags - Google Patents
Method for producing massive sodium hydroxide and co-producing high-grade calcium carbonate by using carbide slags Download PDFInfo
- Publication number
- CN101648718A CN101648718A CN200910041209A CN200910041209A CN101648718A CN 101648718 A CN101648718 A CN 101648718A CN 200910041209 A CN200910041209 A CN 200910041209A CN 200910041209 A CN200910041209 A CN 200910041209A CN 101648718 A CN101648718 A CN 101648718A
- Authority
- CN
- China
- Prior art keywords
- sodium hydroxide
- calcium carbonate
- producing high
- carbide slag
- producing
- 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.)
- Pending
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for producing massive sodium hydroxide and co-producing high-grade calcium carbonate by using carbide slags. The main technical scheme is as follows: the carbide slagsand soda ash undergo chemical reaction according to a certain proportion to generate mixed liquor of sodium hydroxide and calcium carbonate; dilute sodium hydroxide solution is obtained by centrifuging and is directly distilled to obtain solid sodium hydroxide; the high-grade calcium carbonate is obtained by washing, drying, grinding and packaging filter cakes. The method effectively lowers the production cost of solid massive sodium hydroxide, increases the productivity of the sodium hydroxide through washing and recycling, simultaneously controls the discharge of three wastes and produces the products.
Description
Technical field:
The present invention relates to the technical field of three chemical wastes and utilization, especially a kind of method of making massive sodium hydroxide and co-producing high-grade calcium carbonate with carbide slag.
Technical background:
At present, the method for producing sodium hydroxide is except the ionic membrane method, and that has been exactly a causticizing process, mainly is to utilize slaked lime and soda ash to carry out causticizing reaction under certain condition and make.The shortcoming of this method is the production cost height, and productive rate is low, and the three waste discharge phenomenon is arranged.And the present invention is on the basis of causticizing process, utilize the chemical spent material calcium carbide slag to substitute slaked lime cost is reduced greatly, and, both reclaimed alkali lye by washing and improved productive rate the waste residue utilization that discharges after the causticization, produce the ordinary calcium carbonate product again, the three wastes have also obtained improvement simultaneously.
Summary of the invention:
The invention provides and a kind ofly make the method for massive sodium hydroxide and co-producing high-grade calcium carbonate, effectively reduced the production cost of liquid sodium hydroxide, improved the productive rate of sodium hydroxide again, also administered three waste discharge simultaneously by washing and recycling with carbide slag.
To achieve the above object, technical scheme of the present invention is:
Carbide slag acidified purifies and obtains purified calcium hydroxide, and its process is:
The carbide slag water is modulated into emulsion and the mass ratio of dilution hydrochloric acid well in pure substance: 1: the ratio of 0.76-1.16 is put into cleaner (1) lining, under stirring slowly, carry out chemical reaction, obtain the calcium chloride mixing solutions, suction filtration gets calcium chloride clear liquor and carbon dust slag.Then calcium chloride and sodium hydroxide according to the mass ratio 1 of pure substance: 0.52-0.92 carry out reactor (2) chemical reaction obtain fine calcium hydroxide mixing solutions suction filtration (3) calcium hydroxide filter cake and sodium-chlor clear liquor.
The soda ash good calcium hydroxide that obtains after purifying and dissolving carries out chemical reaction according to pure substance mass ratio 1: 1.23-1.63 under the stirring that synthesizer (4) blows slowly, temperature of reaction was controlled at the 40-50 degree, obtained the mixing liquid of sodium hydroxide and lime carbonate through 2-5 hour causticizing reaction.Wash through centrifugal (5) afterwards and obtain dilute solution of sodium hydroxide and calcium carbonate wet product after pouring separates, dilute solution of sodium hydroxide obtains solid sodium hydroxide through underpressure distillation (6), obtains blocky sodium hydroxide through pulverizing and enters storage tank (7); Lime carbonate drying (8) is pulverized (9), and packing becomes finished product lime carbonate at finishing room.
Its chemical principle is: Ca (OH)
2+ 2HCl===CaCl
2+ H
2O
CaCl
2+NaOH＝＝＝Ca(OH)
2+2NaCl
Ca(OH)
2+Na
2CO
3＝＝2NaOH+CaCO
3
Description of drawings:
This figure is a process flow sheet of the present invention, wherein
The 1-----cleaner, 2------reactor machine, 3------suction filtration machine, the 4------causticizer, the 5------whizzer, the 6------vacuum distilling apparatus, 7-------sodium hydroxide storage tank, the 8------drying room is between the 9------fragmentation.
Concrete embodiment:
Embodiment one: the carbide slag water of 800kg is modulated into emulsion and the mass ratio of dissolving soda ash well in pure substance: 1: 0.76 ratio is put into temperature control low temperature purification device (1) lining, carries out chemical reaction and obtain the calcium chloride mixing solutions under stirring slowly.Suction filtration gets calcium chloride clear liquor and carbon dust slag.Then calcium chloride and sodium hydroxide according to the mass ratio of pure substance carry out at 1: 0.52 reactor (2) chemical reaction obtain fine calcium hydroxide mixing solutions suction filtration (3) calcium hydroxide filter cake and sodium-chlor clear liquor.Calcium hydroxide and yellow soda ash entered causticizer (4) according to 1: 1.23, and temperature of reaction was controlled at the 40-50 degree, obtained the mixing liquid of sodium hydroxide and lime carbonate through 3 hours causticizing reactions.Wash through centrifugal (5) afterwards and obtain dilute solution of sodium hydroxide and calcium carbonate wet product after pouring separates, dilute solution of sodium hydroxide obtains solid sodium hydroxide through underpressure distillation (6), obtains blocky sodium hydroxide through pulverizing; (863.4kg) enter storage tank (7); Lime carbonate drying (8) is pulverized (9), and packing becomes finished product high-grade calcium carbonate (928.3kg) at finishing room.
Embodiment two: with the carbide slag of 800kg be modulated into emulsion through purification be reduced into again calcium hydroxide again with the mass ratio of soda ash in pure substance: 1: 1: 143 ratio is put in the reactor, temperature of reaction was controlled at 45 degree, obtained the mixing liquid of sodium hydroxide and lime carbonate through 2 hours causticizing reactions.Obtain dilute solution of sodium hydroxide and calcium carbonate wet product through centrifugal washing after pouring separates afterwards, dilute solution of sodium hydroxide obtains solid block sodium hydroxide (742.64kg) through underpressure distillation; The lime carbonate drying is pulverized, and packing becomes finished product high-grade calcium carbonate (928.3kg).
Embodiment three: with the carbide slag of 800kg be modulated into emulsion through purification be reduced into again calcium hydroxide again with the mass ratio of soda ash in pure substance: 1: 1.63 ratio is put in the reactor, temperature of reaction was controlled at 50 degree, obtained the mixing liquid of sodium hydroxide and lime carbonate through 5 hours causticizing reactions.Obtain dilute solution of sodium hydroxide and calcium carbonate wet product through centrifugal washing after pouring separates afterwards, dilute solution of sodium hydroxide obtains solid block sodium hydroxide (864.86kg) through underpressure distillation; The lime carbonate drying is pulverized, and packing becomes finished product high-grade calcium carbonate (1081.08kg).
Claims (5)
1 one kinds of carbide slags are made the method for massive sodium hydroxide and co-producing high-grade calcium carbonate, carrying out chemical reaction by carbide slag and soda ash through abundant stirring obtains, its technical characterictic is that carbide slag and soda ash are according to certain ratio reaction, when producing blocky sodium hydroxide, go back the co-producing high-grade calcium carbonate product.
The described a kind of carbide slag of 2 claims 1 is made the method for massive sodium hydroxide and co-producing high-grade calcium carbonate, and its technical characterictic is that carbide slag and soda ash react according to certain ratio, when producing blocky sodium hydroxide, go back the co-producing high-grade calcium carbonate product.Concrete process flow steps is:
Carbide slag acidified purifies and obtains purified calcium hydroxide, and its process is:
The carbide slag water is modulated into emulsion and the mass ratio of dilution hydrochloric acid well in pure substance: 1: the ratio of 0.76-1.16 is put into cleaner (1) lining, under stirring slowly, carry out chemical reaction, obtain the calcium chloride mixing solutions, suction filtration gets calcium chloride clear liquor and carbon dust slag.Then calcium chloride and sodium hydroxide according to the mass ratio 1 of pure substance: 0.52-0.92 carry out reactor (2) chemical reaction obtain fine calcium hydroxide mixing solutions suction filtration (3) calcium hydroxide filter cake and sodium-chlor clear liquor.
3 claims 1 and 2 described a kind of carbide slags are made the method for massive sodium hydroxide and co-producing high-grade calcium carbonate, and its technical characterictic is that carbide slag and soda ash react according to certain ratio, when producing blocky sodium hydroxide, go back the co-producing high-grade calcium carbonate product.Concrete process flow steps is:
The soda ash good calcium hydroxide that obtains after purifying and dissolving carries out chemical reaction according to pure substance mass ratio 1: 1.23-1.63 under the stirring that synthesizer (4) blows slowly, temperature of reaction was controlled at the 40-50 degree, obtained the mixing liquid of sodium hydroxide and lime carbonate through 2-5 hour causticizing reaction.Wash through centrifugal (5) afterwards and obtain dilute solution of sodium hydroxide and calcium carbonate wet product after pouring separates, dilute solution of sodium hydroxide obtains solid sodium hydroxide through underpressure distillation (6), obtains blocky sodium hydroxide through pulverizing and enters storage tank (7); Lime carbonate drying (8) is pulverized (9), and packing becomes finished product lime carbonate at finishing room.
The described a kind of carbide slag of 4 claims 3 is made the method for massive sodium hydroxide and co-producing high-grade calcium carbonate, and described causticizing reaction obtains the mixing liquid of sodium hydroxide and lime carbonate.Wash through centrifugal (5) afterwards and obtain dilute solution of sodium hydroxide and calcium carbonate wet product after pouring separates, dilute solution of sodium hydroxide obtains solid sodium hydroxide through underpressure distillation (6), obtains blocky sodium hydroxide through pulverizing and enters storage tank (7).
The described a kind of carbide slag of 5 claims 3 is made the method for massive sodium hydroxide and co-producing high-grade calcium carbonate, and described lime carbonate drying (8) is pulverized (9), and packing becomes finished product lime carbonate at finishing room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910041209A CN101648718A (en) | 2009-07-17 | 2009-07-17 | Method for producing massive sodium hydroxide and co-producing high-grade calcium carbonate by using carbide slags |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910041209A CN101648718A (en) | 2009-07-17 | 2009-07-17 | Method for producing massive sodium hydroxide and co-producing high-grade calcium carbonate by using carbide slags |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101648718A true CN101648718A (en) | 2010-02-17 |
Family
ID=41671074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910041209A Pending CN101648718A (en) | 2009-07-17 | 2009-07-17 | Method for producing massive sodium hydroxide and co-producing high-grade calcium carbonate by using carbide slags |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101648718A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792166A (en) * | 2009-07-17 | 2010-08-04 | 王嘉兴 | Method for producing blocky sodium hydroxide and calcium carbonate by using carbide slag |
| CN105040503A (en) * | 2015-06-18 | 2015-11-11 | 重庆鹏越科技发展有限公司 | Novel application of acetylene sludge to light-industry papermaking production |
-
2009
- 2009-07-17 CN CN200910041209A patent/CN101648718A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792166A (en) * | 2009-07-17 | 2010-08-04 | 王嘉兴 | Method for producing blocky sodium hydroxide and calcium carbonate by using carbide slag |
| CN105040503A (en) * | 2015-06-18 | 2015-11-11 | 重庆鹏越科技发展有限公司 | Novel application of acetylene sludge to light-industry papermaking production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101391794B (en) | Novel method for preparing light calcium carbonate by recovering solid white slime through alkaline pulping | |
| 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 | |
| CN104649286A (en) | Method for producing sodium metaborate and sodium perborate from boronic concentrate | |
| CN1321243C (en) | Method for recovering superfine calcium carbonate by clean causticization of green liquor | |
| CN101648714A (en) | Method for producing low-concentration liquid sodium hydroxide and co-producing calcium carbonate by using carbide slags | |
| CN101648718A (en) | Method for producing massive sodium hydroxide and co-producing high-grade calcium carbonate by using carbide slags | |
| CN101538058B (en) | Low-temperature low-pressure hydro chemical method for recovering aluminum oxide and sodium oxide from red mud | |
| CN101172633A (en) | Technique for producing hydroted alumina and silicic acid with high-silicon low-aluminium mineral raw material | |
| CN107337216A (en) | A kind of method that potassium feldspar hydro-thermal alkaline process prepares potassium hydroxide | |
| CN112174093B (en) | Method for producing bleaching powder by using carbide slag | |
| CN101648720A (en) | Method for producing granular sodium hydroxide and high-grade calcium carbonate by using carbide slags | |
| CN101624204B (en) | Four-great circulation method formed by waste gypsum mud and chlor-alkali industry | |
| CN101648715A (en) | Method for producing high-quality liquid caustic soda and high-grade calcium carbonate | |
| CN101837993A (en) | Method for producing sodium hydroxide and co-producing calcium carbonate by using carbide slag | |
| CN101654261A (en) | Method for manufacturing low-grade and high-quality liquid caustic soda and top grade calcium carbonate | |
| CN103215849A (en) | Method for recycling white-clay refined paper calcium carbonate filler by improved soda-process pulping alkali | |
| CN101648716A (en) | Method for producing high-concentration liquid sodium hydroxide and co-producing calcium carbonate by using carbide slags | |
| CN101837997B (en) | Method for preparing magnesium carbonate and co-producing sodium carbonate and calcium sulfate from soda ash salt mud | |
| CN102092748A (en) | Method for producing magnesium carbonate, calcium carbonate and ammonium sulfate by using soda ash waste residues | |
| CN101805004A (en) | Method for producing calcium hydroxide and co-producing industrial salt and carbon powder by using carbide slag | |
| CN101792166A (en) | Method for producing blocky sodium hydroxide and calcium carbonate by using carbide slag | |
| CN101648719A (en) | Method for producing granular sodium hydroxide and co-producing calcium carbonate | |
| CN101648717A (en) | Method for producing caustic soda and co-producing calcium carbonate | |
| CN101643229A (en) | Co-production method for making high-quality calcium hydroxide, industrial salt and carbon powder by acetylene sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100217 |