DE1098430B - Process to increase the raw breaking strength of kaolins - Google Patents
Process to increase the raw breaking strength of kaolinsInfo
- Publication number
- DE1098430B DE1098430B DEB49253A DEB0049253A DE1098430B DE 1098430 B DE1098430 B DE 1098430B DE B49253 A DEB49253 A DE B49253A DE B0049253 A DEB0049253 A DE B0049253A DE 1098430 B DE1098430 B DE 1098430B
- Authority
- DE
- Germany
- Prior art keywords
- breaking strength
- starch
- kaolins
- increase
- raw breaking
- 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
- 235000012211 aluminium silicate Nutrition 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 5
- 229920002472 Starch Polymers 0.000 claims description 16
- 239000008107 starch Substances 0.000 claims description 16
- 235000019698 starch Nutrition 0.000 claims description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 229940023144 sodium glycolate Drugs 0.000 claims description 6
- JEJAMASKDTUEBZ-UHFFFAOYSA-N tris(1,1,3-tribromo-2,2-dimethylpropyl) phosphate Chemical compound BrCC(C)(C)C(Br)(Br)OP(=O)(OC(Br)(Br)C(C)(C)CBr)OC(Br)(Br)C(C)(C)CBr JEJAMASKDTUEBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 150000002170 ethers Chemical class 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229920003086 cellulose ether Polymers 0.000 description 5
- 239000011505 plaster Substances 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/1305—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Verfahren zur Erhöhung der Rohbruchfestigkeit von Kaolinen Die Verarbeitung von angemachten Kaolinschlickern erfolgt im allgemeinen durch Eingießen in Gipsformen. Dazu wird der Schlicker durch Zugabe von Soda, Wasserglas oder anderen alkalischen Verbindungen verflüssigt. Nach dem Gießen läßt man die Rohlinge geraume Zeit in den Gipsformen stehen, da sie sonst beim Herausnehmen, beim Transport oder beim Abstellen deformiert oder zerbrochen werden können. Erst durch längeres Verweilen in den Gipsformen erhalten die Rohlinge die zum Hantieren notwendige Rohbruchfestigkeit.Process for increasing the raw breaking strength of kaolins Processing of prepared kaolin slip is generally done by pouring it into plaster molds. For this purpose, the slip is made by adding soda, water glass or other alkaline substances Liquefied compounds. After casting, the blanks are left in for a long time the plaster molds, otherwise they will be removed when they are removed, during transport or when Parking can be deformed or broken. Only by lingering for a longer period of time In the plaster molds, the blanks are given the strength they need to handle them.
Man hat bereits versucht, diese Rohbruchfestigkeit durch Zusätze organischer Stoffe zu erhöhen, z. B. durch Tannin, Stärke, Alginate, Polyvinylsulfonate und Carboxymethylcellulose (Zelluloseäther). Manche dieser Stoffe haben aber unerwünschte Nebenwirkungen, indem sie beim Anrühren zum Schäumen neigen und dadurch poröse Stellen in den Rohlingen verursachen oder indem sie, wie Carboxymethylcellulose oder Basenaustauscher, Schwindvorgänge einleiten und dadurch zu Rissen führen.Attempts have already been made to increase this raw breaking strength by adding organic To increase substances, e.g. B. by tannin, starch, alginates, polyvinyl sulfonates and Carboxymethyl cellulose (cellulose ether). However, some of these substances have undesirable effects Side effects in that they tend to foam when mixed and thus porous areas cause in the blanks or by, such as carboxymethyl cellulose or base exchanger, Initiate shrinkage processes and thereby lead to cracks.
Es wurde nun gefunden, daß Stärkeäther, insbesondere das Natriumglykolat der Stärke, geeignet ist, die Rohbruchfestigkeit von Kaolinen schon mit verhältnismäßig geringen Zusatzmengen ganz wesentlich zu erhöhen, ohne daß Nachteile der erwähnten Art auftreten. Die Erhöhung der Rohbruchfestigkeit durch den Zusatz von Stärkeäthern ist wesentlich größer als bei dem bekannten Zusatz von Zelluloseäthern.It has now been found that starch ethers, especially sodium glycolate the strength, is suitable, the raw breaking strength of kaolins with already relatively to increase small amounts added quite significantly, without the disadvantages of the above Kind of occur. The increase in the raw breaking strength through the addition of starch ethers is much larger than with the known addition of cellulose ethers.
Geeignete Produkte sind beispielsweise das Natriumglykolat der Stärke und der Stärkernethyläther. So stieg die Rohbruchfestigkeit eines deutschen Kaolins (untersucht nach den Prüfungsbestimmungen DIN 51030, Entwurf vom Juli 1953) bei Zusatz von 0,5 0/, des Natriumglykolats der Stärke auf das 4,3fache, 1,0 0/, des Natriumglykolats der Stärke auf das 8,8fache, 1,5 0/, des Natriumglykolats der Stärke auf das 10,7fache der Rohbruchfestigkeit eines Kaolins ohne Zusatz, wobei Wassergehalt und Verweilzeit bis zur Prüfung gleichgehalten wurden.Suitable products are, for example, sodium glycolate from starch and starch ethyl ether. For example, the raw breaking strength of a German kaolin (examined according to the test provisions DIN 51030, draft of July 1953) increased to 4.3 times, 1.0%, of the sodium glycolate of the starch with the addition of 0.5% of the sodium glycolate of the starch 8.8 times, 1.5 %, of the sodium glycolate of the starch to 10.7 times the raw breaking strength of a kaolin without additives, the water content and residence time being kept the same until the test.
Die auf diese Weise hergestellten Rohlinge trocknen gleichmäßig; sie verziehen sich nicht und ergeben daher weniger Ausschuß als mit den bekannten Zusätzen hergestellte Rohlinge.The blanks produced in this way dry evenly; she do not warp and therefore result in less waste than with the known additives manufactured blanks.
Beispiel Gegenüber anderen Zusatzstoffen ergibt sich eine erhebliche
Steigerung der Rohbruchfestigkeit, wie aus dem folgenden Versuch hervorgeht. Ein
bayrischer Kaolin mit und ohne Zusätze wurde nach den Prüfungsbestimmungen DIN
51030 untersucht und dabei folgende Ergebnisse erhalten:
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB49253A DE1098430B (en) | 1958-06-11 | 1958-06-11 | Process to increase the raw breaking strength of kaolins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB49253A DE1098430B (en) | 1958-06-11 | 1958-06-11 | Process to increase the raw breaking strength of kaolins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1098430B true DE1098430B (en) | 1961-01-26 |
Family
ID=6968818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB49253A Pending DE1098430B (en) | 1958-06-11 | 1958-06-11 | Process to increase the raw breaking strength of kaolins |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1098430B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1278923B (en) * | 1964-08-21 | 1968-09-26 | Rosenthal Ag | Process for improving the dry flexural strength of kaolins |
-
1958
- 1958-06-11 DE DEB49253A patent/DE1098430B/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1278923B (en) * | 1964-08-21 | 1968-09-26 | Rosenthal Ag | Process for improving the dry flexural strength of kaolins |
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