High temperature resistant inorganic molding agent and preparation method thereof

A technology of high temperature resistance and plasticizing agent, applied in the field of high temperature resistant inorganic plasticizing agent and its preparation, can solve the problems of poor high temperature resistance, easy to cause pollution, large consumption, etc., to improve viscosity, reduce usage, Less burnout effect

Inactive Publication Date: 2020-04-28
陈仁清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can also improve the anti-sticking effect of the molding sand and the material cost is low, but its consumption is large and the emission is serious. In the casting process, coal powder and bonding materials will burn and decompose toxic gas pollution, which is easy to cause pollution during use. , resources are in short supply, and have great harm to the human body. Therefore, coal powder clay green sand is not suitable for the needs of the scientific development of the foundry industry and the current environmental protection policy of reducing consumption and emission. Therefore, there is an urgent need in the industry for a direct substitute for coal Powder and the plasticizer of the above-mentioned bonding materials to solve the above-mentioned problems
In addition, the above-mentioned bonding materials for molding sand have poor high temperature resistance, are easy to soften and crack under high temperature conditions, and have low strength under high temperature conditions.

Method used

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  • High temperature resistant inorganic molding agent and preparation method thereof
  • High temperature resistant inorganic molding agent and preparation method thereof
  • High temperature resistant inorganic molding agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] A high temperature resistant inorganic plasticizer, which is composed of the following components by weight: soda ash: 1%; talc: 4%; attapulgite: 5%; high temperature resistant mixture: 10%; alumina: 3%; dihydrogen phosphate Aluminum: 2%; Sepiolite Powder: 10%; Bentonite: 60%, Tricalcium Phosphate 2%, Calcium Pyrophosphate 3%. The respective proportions of the high temperature resistant mixture in the mixture (kaolin 5%; bauxite 5%; corundum powder 10%; quartz powder 5%; iron oxide powder 10%; magnesia powder 5%; zircon powder 5% %; diatomite 10%; chromite powder 5%; mullite powder 5%; silicon carbide powder 5%; silica powder 5%; spinel powder 7%; kyanite powder 8%; forsterite powder 10%) .

[0073] The preparation method of high temperature resistant inorganic plasticizer in the above embodiment: comprising:

[0074] (1) First, crush bentonite powder, talc powder, sepiolite powder, attapulgite powder, tricalcium phosphate and calcium pyrophosphate and mix them togeth...

Embodiment 2

[0078] A high temperature resistant inorganic plasticizer, which is composed of the following components by weight: soda ash: 1%; talc: 4%; attapulgite: 5%; high temperature resistant mixture: 10%; alumina: 3%; dihydrogen phosphate Aluminum: 2%; Sepiolite Powder: 10%; Bentonite: 60%, Tricalcium Phosphate 2%, Calcium Pyrophosphate 3%. The respective proportions of the high temperature resistant mixture in the mixture (kaolin 5%; bauxite 5%; corundum powder 10%; quartz powder 5%; iron oxide powder 10%; magnesia powder 5%; zircon powder 5% %; diatomite 10%; chromite powder 5%; mullite powder 5%; silicon carbide powder 5%; silica powder 5%; spinel powder 7%; kyanite powder 8%; forsterite powder 10%) .

[0079] The preparation method of high temperature resistant inorganic plasticizer in the above embodiment: comprising:

[0080] (1) First, crush bentonite powder, talc powder, sepiolite powder, attapulgite powder, tricalcium phosphate and calcium pyrophosphate and mix them togeth...

Embodiment 3

[0083] Embodiment three (contain only tricalcium phosphate):

[0084] A high temperature resistant inorganic plasticizer, which is composed of the following components by weight: soda ash: 1%; talc: 4%; attapulgite: 5%; high temperature resistant mixture: 10%; alumina: 3%; dihydrogen phosphate Aluminum: 2%; Sepiolite Powder: 10%; Bentonite: 63%, Tricalcium Phosphate 2%. The respective proportions of the high temperature resistant mixture in the mixture (kaolin 5%; bauxite 5%; corundum powder 10%; quartz powder 5%; iron oxide powder 10%; magnesia powder 5%; zircon powder 5% %; diatomite 10%; chromite powder 5%; mullite powder 5%; silicon carbide powder 5%; silica powder 5%; spinel powder 7%; kyanite powder 8%; forsterite powder 10%) .

[0085] The preparation method of high temperature resistant inorganic plasticizer in the above embodiment: comprising:

[0086] (1) First, crush bentonite powder, talc powder, sepiolite powder, attapulgite powder and tricalcium phosphate and ...

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Abstract

The invention provides a high temperature resistant inorganic molding agent with high adhesive strength and capable of directly replacing coal powder and a bonding material and a preparation method ofthe high temperature resistant inorganic molding agent. The high temperature resistant inorganic molding agent is prepared from the following components in percentage by weight: 0-10% of soda ash, 0-10% of talcum powder, 0-10% of attapulgite, 0.5-40% of a high temperature resistant mixture, 0.5-30% of alumina, 0-5% of aluminium dihydrogen phosphate, 0-30% of sepiolite powder, 20-95% of bentoniteand the like.

Description

technical field [0001] The invention relates to the field of chemical agents, more particularly to a high temperature resistant inorganic plasticizer and a preparation method thereof. Background technique [0002] Sand box molding sand is the material used for molding in sand casting. The role of molding sand in foundry production is extremely important. The bonding ability of the molding sand is an important indicator to measure the quality of the molding sand formulation. The molding sand is generally made of raw sand, molding sand binders and auxiliary materials mixed in a certain proportion. [0003] Molding sand should have the following characteristics: 1. Good air permeability. After the high-temperature metal cast iron liquid is poured into the mold, the gas must be smoothly discharged from the mold; 2. Good strength to ensure that the molding sand must have high enough strength and Concession; 3. It has good fire resistance and can resist the integrity of the sand ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/18
CPCB22C1/181
Inventor 陈仁清
Owner 陈仁清
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