CN102974750B - A kind of preparation method of hot investment casting natural sodium bentonite - Google Patents
A kind of preparation method of hot investment casting natural sodium bentonite Download PDFInfo
- Publication number
- CN102974750B CN102974750B CN201210142013.3A CN201210142013A CN102974750B CN 102974750 B CN102974750 B CN 102974750B CN 201210142013 A CN201210142013 A CN 201210142013A CN 102974750 B CN102974750 B CN 102974750B
- Authority
- CN
- China
- Prior art keywords
- sodium
- bentonite
- mentioned steps
- preparation
- investment casting
- 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.)
- Expired - Fee Related
Links
Landscapes
- Mold Materials And Core Materials (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a kind of preparation method of hot investment casting natural sodium bentonite, described method comprises the steps such as mining, drying, coarse crushing, adjustment sodium content, sodium, drying and pulverizing; The invention has the advantages that: when the bentonite obtained by the method is contacted with the high temperature higher than 300 DEG C, can not rebound, heat-resisting quantity and good weatherability, bonding molding sand, durability are good, and addition is few, good permeability.
Description
Technical field
The present invention relates to a kind of preparation method for bentonite, specifically a kind of preparation method of hot investment casting natural sodium bentonite, belongs to bentonitic preparation field.
Background technology
Bentonite is a kind of moisture aluminium silicate mineral, and crystal structure belongs to 2: 1 types.Its main component is montmorillonite.Bentonite is generally divided into calcium-base bentonite and sodium bentonite, and existing bentonite major part is commercially the calcium-base bentonite of artificial natridization, and natural sodium bentonite is little, therefore very rare.The bentonite of artificial natridization in some performances far away less than natural sodium bentonite.Bentonitic sodium is the feature utilizing montmorillonite laminated structure to have cation exchange, and the calcium magnesium plasma of high price is cemented out.Its replacement process is:
Present major part is the calcium-base bentonite after artificial natridization, and heat-resisting quantity and weatherability are not fine, and when the bentonite after artificial natridization contacts with the high temperature higher than 300 DEG C, will rebound, weatherability is short, and effect is bad.
Summary of the invention
In order to solve the problem, the present invention devises a kind of preparation method of hot investment casting natural sodium bentonite, when the bentonite obtained is contacted with the high temperature higher than 300 DEG C, can not rebound by the method, heat-resisting quantity and good weatherability.
Technical scheme of the present invention is:
A preparation method for hot investment casting natural sodium bentonite, comprises the following steps:
(1) bentonite ore is gathered;
(2) bentonite ore that above-mentioned steps (1) obtains being dried to water content mass fraction is 15-25%, is preferably 20%;
(3) use pulverizer to carry out coarse crushing to the bentonite ore that above-mentioned steps (2) obtains, obtain particle diameter at the muck of 0.5-1 centimetre;
(4) regulate sodium content, batching, is added the soda ash of bentonite ore weight 2% and the caustic soda of 0.5% in the muck that above-mentioned steps (3) is obtained;
(5) the rough of sodium content above-mentioned steps (4) is regulated to carry out sodium by extruding sodium machine;
(6) be less than 13% by the rough water content mass fraction that is dried to after above-mentioned steps (5) sodium, be preferably 5-10%;
(7) rough after above-mentioned steps (6) sodium is crushed to diameter less than 0.075 millimeter, is preferably 0.05 millimeter.
The invention has the advantages that: when the bentonite obtained by the method is contacted with the high temperature higher than 300 DEG C, can not rebound, heat-resisting quantity and good weatherability, bonding molding sand (silica sand, soil, coal dust, water form), durability are good, addition is few, general addition is 6-9%, and the addition of this product is 3-5%, good permeability.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1
A preparation method for hot investment casting natural sodium bentonite, comprises the following steps:
(1) bentonite ore is gathered;
(2) bentonite ore that above-mentioned steps (1) obtains is dried to water content 15-25%, is preferably 20%;
(3) use pulverizer to carry out coarse crushing to the bentonite ore that above-mentioned steps (2) obtains, obtain particle diameter at the muck of 0.5-1 centimetre;
(4) regulate sodium content, batching, is added the soda ash of bentonite ore weight 2% and the caustic soda of 0.5% in the muck that above-mentioned steps (3) is obtained;
(5) the rough of sodium content above-mentioned steps (4) is regulated to carry out sodium by extruding sodium machine;
(6) be 5-10% by the rough water content that is dried to after above-mentioned steps (5) sodium;
(7) rough after above-mentioned steps (6) sodium is crushed to diameter 0.05 millimeter.
Result: when the bentonite obtained by the method is contacted with the high temperature higher than 300 DEG C, can not rebound, heat-resisting quantity and good weatherability, and bonding molding sand (silica sand, soil, coal dust, water form), durability are good, and addition is few, is 3-5%, good permeability.
Except as otherwise noted, the percentage adopted in the present invention is overall weight percent.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a preparation method for hot investment casting natural sodium bentonite, is characterized in that, comprises the following steps:
(1) bentonite ore is gathered;
(2) bentonite ore that above-mentioned steps (1) obtains being dried to water content mass fraction is 20%;
(3) use pulverizer to carry out coarse crushing to the bentonite ore that above-mentioned steps (2) obtains, obtain particle diameter at the muck of 0.5-1 centimetre;
(4) regulate sodium content, batching, is added the soda ash of bentonite ore weight 2% and the caustic soda of 0.5% in the muck that above-mentioned steps (3) is obtained;
(5) the rough of sodium content above-mentioned steps (4) is regulated to carry out sodium by extruding sodium machine;
(6) be 5-10% by the rough water content mass fraction that is dried to after above-mentioned steps (5) sodium;
(7) rough after above-mentioned steps (6) sodium is crushed to diameter 0.05 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210142013.3A CN102974750B (en) | 2012-05-03 | 2012-05-03 | A kind of preparation method of hot investment casting natural sodium bentonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210142013.3A CN102974750B (en) | 2012-05-03 | 2012-05-03 | A kind of preparation method of hot investment casting natural sodium bentonite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102974750A CN102974750A (en) | 2013-03-20 |
| CN102974750B true CN102974750B (en) | 2015-08-19 |
Family
ID=47849260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210142013.3A Expired - Fee Related CN102974750B (en) | 2012-05-03 | 2012-05-03 | A kind of preparation method of hot investment casting natural sodium bentonite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102974750B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640088B (en) * | 2013-12-16 | 2016-04-27 | 上海市基础工程集团有限公司 | The pulping device of extra long distance super large caliber concrete ceiling coil anti-drag mud and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446845A (en) * | 2002-03-27 | 2003-10-08 | 首钢总公司 | Dry-process method for producing bentonite |
| CN101264893A (en) * | 2007-11-16 | 2008-09-17 | 兰州理工大学 | Preparation method for bentonite |
| JP2011051010A (en) * | 2009-11-20 | 2011-03-17 | Hokkaido Research Organization | High heat-resistance powder for forming inkjet powder lamination mold |
| CN102021322A (en) * | 2009-09-18 | 2011-04-20 | 鞍钢集团矿业公司 | Method for preparing novel binder for metallurgic pellets |
| CN102259881A (en) * | 2011-06-20 | 2011-11-30 | 浙江丰虹新材料股份有限公司 | Method for preparing high-viscosity organic bentonite by virtue of calcium-based bentonite |
-
2012
- 2012-05-03 CN CN201210142013.3A patent/CN102974750B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446845A (en) * | 2002-03-27 | 2003-10-08 | 首钢总公司 | Dry-process method for producing bentonite |
| CN101264893A (en) * | 2007-11-16 | 2008-09-17 | 兰州理工大学 | Preparation method for bentonite |
| CN102021322A (en) * | 2009-09-18 | 2011-04-20 | 鞍钢集团矿业公司 | Method for preparing novel binder for metallurgic pellets |
| JP2011051010A (en) * | 2009-11-20 | 2011-03-17 | Hokkaido Research Organization | High heat-resistance powder for forming inkjet powder lamination mold |
| CN102259881A (en) * | 2011-06-20 | 2011-11-30 | 浙江丰虹新材料股份有限公司 | Method for preparing high-viscosity organic bentonite by virtue of calcium-based bentonite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102974750A (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103586399A (en) | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof | |
| CN103521681A (en) | Molding sand and preparation method thereof | |
| CN104057013B (en) | A kind of environmental protection casting sand and preparation method thereof | |
| CN109465378B (en) | Process for preparing artificial spherical ceramic sand for casting by using investment casting waste shell | |
| CN103521678A (en) | Molding sand capable of increasing brightness of castings and preparation method thereof | |
| CN104496438B (en) | A kind of quartz sand ore mine tailing or silica sand ore deposit mine tailing base high-strength ceramic plate and preparation method thereof | |
| CN101544479B (en) | Compound active powder of ball milling steel slag tailing slurry and blast-furnace slag and application of compound active powder in preparing concrete | |
| CN104057018A (en) | Casting molding sand and preparation method thereof | |
| CN104529312B (en) | Large dosage high-strength nickel slag brick and preparation method thereof | |
| CN103495698A (en) | High-strength moulding sand and preparation method thereof | |
| CN103586395A (en) | Molding sand for automatic production line and preparation method thereof | |
| CN103521690A (en) | Easily-collapsible mud core molding sand and preparation method thereof | |
| CN102976680B (en) | A kind of pervious concrete | |
| CN103553656A (en) | Low-cost magnesium-silicon based castable for tundish prefabricated component and preparation method thereof | |
| CN103495694A (en) | Yellow-soil foundry sand and preparation method thereof | |
| CN102765896B (en) | Mineral admixture for autoclave-free and steaming-free prestressed pipe piles and manufacturing method of mineral admixture | |
| CN103498061A (en) | High-aluminium bauxite cast-moulding sand and preparation method thereof | |
| CN103521691A (en) | Modified bentonite molding sand and preparation method thereof | |
| CN101550018A (en) | Silica fire resistant castable and preparing method thereof | |
| CN103588456B (en) | A kind of autoclaved fly ash tailing-bricks | |
| CN103465186A (en) | Vitrified bonded grinding wheel manufacturing method | |
| CN103351107A (en) | Method for low temperature separation of waste concrete | |
| CN102974750B (en) | A kind of preparation method of hot investment casting natural sodium bentonite | |
| CN107759153B (en) | Alkali-activated high-titanium slag permeable product and preparation method thereof | |
| CN104099468B (en) | A kind of bauxite base iron ore pellet binder and preparation method thereof |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160503 |