CN103056283A - Molding sand containing halloysite and preparation method thereof - Google Patents

Molding sand containing halloysite and preparation method thereof Download PDF

Info

Publication number
CN103056283A
CN103056283A CN2012105695154A CN201210569515A CN103056283A CN 103056283 A CN103056283 A CN 103056283A CN 2012105695154 A CN2012105695154 A CN 2012105695154A CN 201210569515 A CN201210569515 A CN 201210569515A CN 103056283 A CN103056283 A CN 103056283A
Authority
CN
China
Prior art keywords
molding sand
sand
parts
water
galapectite
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.)
Granted
Application number
CN2012105695154A
Other languages
Chinese (zh)
Other versions
CN103056283B (en
Inventor
张立安
魏明军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WANXIN CASTING CO Ltd MAANSHAN CITY
Original Assignee
WANXIN CASTING CO Ltd MAANSHAN CITY
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WANXIN CASTING CO Ltd MAANSHAN CITY filed Critical WANXIN CASTING CO Ltd MAANSHAN CITY
Priority to CN201210569515.4A priority Critical patent/CN103056283B/en
Publication of CN103056283A publication Critical patent/CN103056283A/en
Application granted granted Critical
Publication of CN103056283B publication Critical patent/CN103056283B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses molding sand containing halloysite. The molding sand comprises, by weight, 81-85 parts of quartz sand, 10-12 parts of mixed materials, 6-8 parts of the halloysite, 4-5 parts of bentonite, 2-3 parts of sodium silicate, 2-3 parts of croscarmellose sodium, 1-2 parts of unslaked lime, 0.7-1 part of sodium dodecyl benzene sulfonate, 0.6-0.8 part of gypsum, and 3-10 parts of water. Castings manufactured by adopting of the molding sand are small in gas evolution, short in drying time, good in air permeability and high in dry pulling strength, demolding performance of the molding sand can be improved, sensibility to water can be reduced when pouring is carried out, defects of sand burning, sand inclusion, sand wash, air holes and the like of the castings can be observably improved at the same time, and the degree of finish of the castings can be further improved. In the productive process of the molding sand, through a premixed method, the fact that the mixed materials and the bentonite cannot be uniformly scattered on the surface of the molding sand due to the fact that the mixed materials and the bentonite form small sticky gobbets when contacted with the water can be avoided, and the fact that performance of the molding sand is affected caused by the fact that small block masses are condensed in the molding sand is avoided.

Description

A kind of molding sand that contains galapectite and preparation method thereof
Technical field
The present invention relates generally to a kind of molding sand, relates in particular to a kind of molding sand that contains galapectite and preparation method thereof.
Background technology
In casting, be used for the material of moulding.Molding sand is generally mixed according to a certain percentage by Modeling Materials such as Foundry sand, moulding sand binder and additional things.The effect of molding sand in Foundry Production is very important, and the casting wasted product that causes because of the poor quality of molding sand accounts for 30~50% of the total waste product of foundry goods.Usually to the requirement of molding sand be: 1, have higher intensity and heat endurance, to bear the effect of various external force and high temperature.2, good flowability, namely molding sand is in the ability that mutually moves between sand grains under external force or the Action of Gravity Field own.3, certain plasticity, namely molding sand is out of shape under external force, can keep the ability of the shape that gives after external force is removed.4, gas permeability preferably, namely the molding sand hole sees through the ability of gas.5, high collapsibility weighs up again grittiness, and namely whether molding sand destroys easily behind casting solidification, the performance of whether removing from foundry goods easily.
Summary of the invention
The object of the invention is exactly in order to remedy the defective of prior art, a kind of molding sand that contains galapectite and preparation method thereof to be provided.
The present invention is achieved by the following technical solutions:
A kind of molding sand that contains galapectite, it is comprised of the raw material of following weight parts:
Quartz sand 81-85, batch mixing 10-12, galapectite 6-8, bentonite 4-5, sodium metasilicate 2-3, Ac-Di-Sol 2-3, quick lime 1-2, neopelex 0.7-1, gypsum 0.6-0.8, water 3-10;
Described batch mixing is comprised of the raw material of following weight parts:
Kaolin 40-45, flyash 10-15, calcium carbonate 10-12, powder of straw 6-8, diatomite 3-5, sodium metasilicate 2-3, plant ash 0.6-0.8, sodium carbonate 1-2, coal dust 0.8-1;
Flyash, calcium carbonate and the kaolin of above-mentioned weight portion are mixed grinding, cross the 250-280 mesh sieve;
Then mix with the sodium carbonate of above-mentioned weight portion, 750-800 ℃ of lower calcining 30-40 minute;
Grind after taking out, cross the 200-250 mesh sieve;
Powder after sieving is joined in the powder weight 8-10 sulfuric acid solution doubly mix and blend 0.5-1 hour;
Be heating 1-2 hour in 90-100 ℃ the water-bath with the material after stirring in temperature;
After the product taking-up, add water or sulfuric acid, regulate PH to 2-3;
Put into again thermostatic drying chamber, at 100-120 ℃ of lower freeze-day with constant temperature 0.5-1 hour;
The plant ash silicon of above-mentioned weight portion is used 10-15% salt acid soak 3-4 hour, and the deionized water washing was soaked 3-4 hour with the 10-12% sodium hydroxide solution again, and is extremely neutral with the deionized water washing again, oven dry;
With the plant ash after the material behind the above-mentioned freeze-day with constant temperature, the oven dry and each raw material mixed grinding of residue, cross the 200-250 mesh sieve, namely get described batch mixing;
The concentration of described sulfuric acid is 60-70%.
A kind of preparation method who contains the molding sand of galapectite may further comprise the steps:
(1) galapectite, the quartz sand with above-mentioned weight portion mixes grinding, crosses the 150-250 mesh sieve;
(2) water of the above-mentioned weight portion 60-70% of adding in the galapectite after sieving and the quartz sand, premixed 40-50s;
(3) add again sodium metasilicate, Ac-Di-Sol, quick lime, neopelex, gypsum, the batch mixing mix and blend 20-30s of above-mentioned weight portion;
(4) add again at last remaining water, mix 60-80s, namely get described molding sand.Advantage of the present invention is:
The foundry goods gas forming amount that adopts this molding sand to produce is little, drying time weak point, good permeability, baked tensile strength height, and can improve the release property of sand mold, when reducing cast to the sensitiveness of moisture, simultaneously the defectives such as the scab of foundry goods, burning into sand, sand washing, pore are had significantly and improve, can make foundry goods further improve fineness, in the production process of this molding sand, by premixed method, can avoid batch mixing and bentonite to meet water and form little sticking group, can't be dispersed in the molding sand surface, condense into little agglomerate in the inside of molding sand, affect moulding-sand property.
The specific embodiment
Embodiment 1
A kind of molding sand that contains galapectite, it is comprised of the raw material of following weight parts (kilogram):
Quartz sand 85, batch mixing 12, galapectite 8, bentonite 5, sodium metasilicate 3, Ac-Di-Sol 3, quick lime 2, neopelex 0.7, gypsum 0.8, water 8;
Described batch mixing is comprised of the raw material of following weight parts:
Kaolin 45, fine coal 15, sodium carbonate 2, calcium carbonate 12, powder of straw 8, diatomite 5, sodium metasilicate 3, plant ash 0.8, coal dust 0.8;
Flyash, calcium carbonate and the kaolin of above-mentioned weight portion are mixed grinding, cross 280 mesh sieves;
Then mix with the sodium carbonate of above-mentioned weight portion, 800 ℃ of lower calcinings 40 minutes;
Grind after taking out, cross 250 mesh sieves;
Powder after sieving is joined in the sulfuric acid solution of 10 times of powder weight mix and blend 0.5 hour;
Be heating 2 hours in 100 ℃ the water-bath with the material after stirring in temperature;
After the product taking-up, add water or sulfuric acid, regulate PH to 3;
Put into again thermostatic drying chamber, 120 ℃ of lower freeze-day with constant temperature 0.5 hour;
With 15% salt acid soak 4 hours, the deionized water washing was soaked 4 hours with 12% sodium hydroxide solution again with the plant ash of above-mentioned weight portion, again with the deionized water washing to neutral, dry;
With the plant ash after the material behind the above-mentioned freeze-day with constant temperature, the oven dry and each raw material mixed grinding of residue, cross 250 mesh sieves, namely get described batch mixing;
The concentration of described sulfuric acid is 70%.
A kind of preparation method who contains the molding sand of galapectite may further comprise the steps:
(1) galapectite, the kaolinite with above-mentioned weight portion mixes grinding, crosses 250 mesh sieves;
(2) water of the above-mentioned weight portion 70% of adding in the galapectite after sieving and the kaolinite, premixed 50s;
(3) add again sodium metasilicate, Ac-Di-Sol, quick lime, neopelex, gypsum, the batch mixing mix and blend 30s of above-mentioned weight portion;
(4) add again at last remaining water, mix 80s, namely get described molding sand.
Performance test:
Utilize the technique detection performance of the casting sand of the inventive method production to be:
Green compression strength (MPa): 0.11
Gas permeability 92
Hot green tensile strength (KPa): 523
Shatter index (j): 87%
Compact rate of molding 40%.

Claims (2)

1. molding sand that contains galapectite is characterized in that what it was comprised of the raw material of following weight parts:
Quartz sand 81-85, batch mixing 10-12, galapectite 6-8, bentonite 4-5, sodium metasilicate 2-3, Ac-Di-Sol 2-3, quick lime 1-2, neopelex 0.7-1, gypsum 0.6-0.8, water 3-10;
Described batch mixing is comprised of the raw material of following weight parts:
Kaolin 40-45, flyash 10-15, calcium carbonate 10-12, powder of straw 6-8, diatomite 3-5, sodium metasilicate 2-3, plant ash 0.6-0.8, sodium carbonate 1-2, coal dust 0.8-1;
Flyash, calcium carbonate and the kaolin of above-mentioned weight portion are mixed grinding, cross the 250-280 mesh sieve;
Then mix with the sodium carbonate of above-mentioned weight portion, 750-800 ℃ of lower calcining 30-40 minute;
Grind after taking out, cross the 200-250 mesh sieve;
Powder after sieving is joined in the powder weight 8-10 sulfuric acid solution doubly mix and blend 0.5-1 hour;
Be heating 1-2 hour in 90-100 ℃ the water-bath with the material after stirring in temperature;
After the product taking-up, add water or sulfuric acid, regulate PH to 2-3;
Put into again thermostatic drying chamber, at 100-120 ℃ of lower freeze-day with constant temperature 0.5-1 hour;
The plant ash silicon of above-mentioned weight portion is used 10-15% salt acid soak 3-4 hour, and the deionized water washing was soaked 3-4 hour with the 10-12% sodium hydroxide solution again, and is extremely neutral with the deionized water washing again, oven dry;
With the plant ash after the material behind the above-mentioned freeze-day with constant temperature, the oven dry and each raw material mixed grinding of residue, cross the 200-250 mesh sieve, namely get described batch mixing;
The concentration of described sulfuric acid is 60-70%.
2. preparation method who contains the molding sand of galapectite as claimed in claim 1 is characterized in that may further comprise the steps:
(1) galapectite, the quartz sand with above-mentioned weight portion mixes grinding, crosses the 150-250 mesh sieve;
(2) water of the above-mentioned weight portion 60-70% of adding in the galapectite after sieving and the quartz sand, premixed 40-50s;
(3) add again sodium metasilicate, Ac-Di-Sol, quick lime, neopelex, gypsum, the batch mixing mix and blend 20-30s of above-mentioned weight portion;
(4) add again at last remaining water, mix 60-80s, namely get described molding sand.
CN201210569515.4A 2012-12-25 2012-12-25 A kind of molding sand containing galapectite and preparation method thereof Active CN103056283B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210569515.4A CN103056283B (en) 2012-12-25 2012-12-25 A kind of molding sand containing galapectite and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210569515.4A CN103056283B (en) 2012-12-25 2012-12-25 A kind of molding sand containing galapectite and preparation method thereof

Publications (2)

Publication Number Publication Date
CN103056283A true CN103056283A (en) 2013-04-24
CN103056283B CN103056283B (en) 2015-09-16

Family

ID=48099337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210569515.4A Active CN103056283B (en) 2012-12-25 2012-12-25 A kind of molding sand containing galapectite and preparation method thereof

Country Status (1)

Country Link
CN (1) CN103056283B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495695A (en) * 2013-10-16 2014-01-08 合肥市田源精铸有限公司 Chilled mud-core molding sand manufactured from chromite sand and method for manufacturing chilled mud-core molding sand
CN103495698A (en) * 2013-10-16 2014-01-08 合肥市田源精铸有限公司 High-strength moulding sand and preparation method thereof
CN103521686A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for casting brake hub and preparation method thereof
CN103521689A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for recycling old sand and preparation method thereof
CN103521688A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand casted by potassium feldspar and preparation method thereof
CN103521680A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Permeable anti-adhesive molding sands and preparation method thereof
CN103521687A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for large cast steel roll and preparation method of molding sand
CN103521678A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand capable of increasing brightness of castings and preparation method thereof
CN103521681A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand and preparation method thereof
CN103521694A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Sepiolite molding sand and preparation method thereof
CN103521690A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Easily-collapsible mud core molding sand and preparation method thereof
CN103567359A (en) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 Clay green sand for high-pressure molding and preparation method thereof
CN103567372A (en) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 Molding sand with high gas permeability for casting and preparation method thereof
CN103923497A (en) * 2014-04-03 2014-07-16 常州大学 Preparation method of halloysite modified bentonite material
CN106424533A (en) * 2016-10-24 2017-02-22 马鞍山顺发机械制造有限公司 High-quality molding sand for casting
CN107552719A (en) * 2017-08-11 2018-01-09 徐州东力锻压机械有限公司 A kind of moulding sand for casting and preparation method thereof
CN110355326A (en) * 2019-08-19 2019-10-22 山西星缘和环保有限公司 A kind of clay green-sand additive and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154894A (en) * 1978-05-05 1979-05-15 E. I. Du Pont De Nemours And Company Process for treating olivine foundry sand
CN1723094A (en) * 2002-12-09 2006-01-18 花王株式会社 Spherical casting sand and method for making same
CN101575112A (en) * 2008-05-08 2009-11-11 沈阳铝镁设计研究院 Method of preparing aluminum sulphate by utilizing fly ash
CN101961767A (en) * 2010-09-09 2011-02-02 周道虎 Formula of brake drum clay sand molding
CN102101689A (en) * 2010-12-23 2011-06-22 内蒙古昶泰资源循环再生利用科技开发有限责任公司 Technological method for producing high-purity low-iron aluminum sulfate by using coal ash and comprehensively utilizing coal ash
CN102366811A (en) * 2011-10-10 2012-03-07 辛培兴 Preparation method of molding sand for gray iron casting
CN102380575A (en) * 2011-11-03 2012-03-21 铜陵和武机械制造有限责任公司 Resin casting molding sand and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154894A (en) * 1978-05-05 1979-05-15 E. I. Du Pont De Nemours And Company Process for treating olivine foundry sand
CN1723094A (en) * 2002-12-09 2006-01-18 花王株式会社 Spherical casting sand and method for making same
CN101575112A (en) * 2008-05-08 2009-11-11 沈阳铝镁设计研究院 Method of preparing aluminum sulphate by utilizing fly ash
CN101961767A (en) * 2010-09-09 2011-02-02 周道虎 Formula of brake drum clay sand molding
CN102101689A (en) * 2010-12-23 2011-06-22 内蒙古昶泰资源循环再生利用科技开发有限责任公司 Technological method for producing high-purity low-iron aluminum sulfate by using coal ash and comprehensively utilizing coal ash
CN102366811A (en) * 2011-10-10 2012-03-07 辛培兴 Preparation method of molding sand for gray iron casting
CN102380575A (en) * 2011-11-03 2012-03-21 铜陵和武机械制造有限责任公司 Resin casting molding sand and preparation method thereof

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103567359A (en) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 Clay green sand for high-pressure molding and preparation method thereof
CN103567372A (en) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 Molding sand with high gas permeability for casting and preparation method thereof
CN103495695A (en) * 2013-10-16 2014-01-08 合肥市田源精铸有限公司 Chilled mud-core molding sand manufactured from chromite sand and method for manufacturing chilled mud-core molding sand
CN103521689A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for recycling old sand and preparation method thereof
CN103521688A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand casted by potassium feldspar and preparation method thereof
CN103521680A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Permeable anti-adhesive molding sands and preparation method thereof
CN103521687A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for large cast steel roll and preparation method of molding sand
CN103521678A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand capable of increasing brightness of castings and preparation method thereof
CN103521681A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand and preparation method thereof
CN103521694A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Sepiolite molding sand and preparation method thereof
CN103521690A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Easily-collapsible mud core molding sand and preparation method thereof
CN103521686A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for casting brake hub and preparation method thereof
CN103495698A (en) * 2013-10-16 2014-01-08 合肥市田源精铸有限公司 High-strength moulding sand and preparation method thereof
CN103923497A (en) * 2014-04-03 2014-07-16 常州大学 Preparation method of halloysite modified bentonite material
CN106424533A (en) * 2016-10-24 2017-02-22 马鞍山顺发机械制造有限公司 High-quality molding sand for casting
CN107552719A (en) * 2017-08-11 2018-01-09 徐州东力锻压机械有限公司 A kind of moulding sand for casting and preparation method thereof
CN110355326A (en) * 2019-08-19 2019-10-22 山西星缘和环保有限公司 A kind of clay green-sand additive and preparation method thereof

Also Published As

Publication number Publication date
CN103056283B (en) 2015-09-16

Similar Documents

Publication Publication Date Title
CN103056283A (en) Molding sand containing halloysite and preparation method thereof
CN103042155B (en) A kind of molding sand containing plant ash and preparation method thereof
CN103042158B (en) High crush-resistance moulding sand and preparation method thereof
CN103042157B (en) Yellow soil contained moulding sand and preparation method thereof
CN103042162B (en) A kind of molding sand containing potter's clay and preparation method thereof
CN103042161B (en) A kind of molding sand containing quartz sand and preparation method thereof
CN103042160B (en) Zircon sand contained moulding sand and preparation method thereof
CN104057014B (en) A kind of molding sand for casting gray iron and preparation method thereof
CN103495693A (en) High-temperature-resisting easy collapse molding sand and preparation method thereof
CN103521681A (en) Molding sand and preparation method thereof
CN103495692A (en) Mud core moulding sand for casting and preparation method thereof
CN103056282A (en) Molding sand containing dickite and preparation method thereof
CN103100639B (en) A kind of preparation method of highly-breathable casting sand
CN104057013A (en) Environment-friendly casting molding sand and preparation method thereof
CN103042159A (en) Illite-contained molding sand and preparation method thereof
CN103100641B (en) A kind of method of Doping Phosphorus slag casting sand
CN103521684A (en) Corundum-mullite modified molding sand and preparation method thereof
CN103100646B (en) Method for manufacturing foundry sand by utilizing straw powder
CN103100648B (en) A kind of method of the plant ash casting sand that adulterates
CN103100645A (en) Method for preparing casting molding sand by using slag
CN103521695A (en) Molding sand for casting iron balls and preparation method of molding sand
CN103042156B (en) Bauxite contained moulding sand and preparation method thereof
CN104057015A (en) Casting molding sand for non-ferrous metal and preparation method of casting molding sand
CN102731114A (en) Molding sand using mullite sand as main body and manufacture method thereof
CN103521696A (en) Molding sand for pressure plate casting and preparation method of molding sand

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