Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Casting molding sand with regenerated dedusting ash and preparation technology of casting molding sand

A preparation process and molding sand technology, which is applied in the direction of casting molding equipment, casting molds, manufacturing tools, etc., can solve the problems of dust removal and recycling, achieve the effects of reducing pollution, reducing the amount of new additions, and improving refractoriness and yield

Active Publication Date: 2014-12-24
西峡飞龙特种铸造有限公司
View PDF9 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is only for the recycling of old sand, and does not recycle the dust, so there is a need for a preparation process for the reclaimed sand from the foundry dust

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A kind of foundry dedusting ash regenerated molding sand, including old sand, dedusting ash, new sand and slaked lime, including 20-25% bentonite and 5-8% coal powder in the dedusting ash, and the described old sand is reclaimed silica sand , the new sand also includes clay and coal powder, the number of added parts of the old sand, dedusting ash, new sand and slaked lime: 80-88 parts of old sand, 3-6 parts of dedusting ash, 10-13 parts of new sand, 1-3 parts of hydrated lime 3 parts, clay 2-3, coal powder 2-3, the rest is water.

[0019] The ratio of parts to parts of the reclaimed foundry sand is as follows: 88 parts of old sand, 5 parts of dust ash, 12 parts of new sand, 1 part of slaked lime, 2 parts of clay, 3 parts of pulverized coal, and the rest is water.

[0020] A preparation process for foundry dedusting reclaimed molding sand:

[0021] a. Detect and analyze the dedusting ash to obtain the content of coal powder and bentonite, and then classify...

Embodiment 2

[0026] Embodiment two: a kind of foundry dedusting ash regenerated molding sand, including old sand, dedusting ash, new sand and slaked lime, comprising 20% ​​bentonite and 5% coal powder in the described dedusting ash, described old sand is reclaimed silica sand, described new sand Also includes clay and coal powder, the number of added parts of old sand, dedusting ash, new sand and hydrated lime: 82 parts of old sand, 6 parts of dedusting ash, 13 parts of new sand, 3 parts of hydrated lime, 2 parts of clay, 2 parts of coal powder, and the rest are water.

[0027] A preparation process for foundry dedusting reclaimed molding sand:

[0028] a. Detect and analyze the dedusting ash to obtain the content of coal powder and bentonite, and then classify and store the dedusting ash;

[0029] b. Analyze the old sand, then add the amount of dust removal ash according to the process needs, and then add it to the sand mixer and mix it evenly;

[0030] c. Dry mix the new foundry sand w...

Embodiment 3

[0040] Embodiment three: a kind of foundry dedusting regenerated molding sand, including old sand, dedusting ash, new sand and slaked lime, including 23% bentonite and 6% coal powder in the described dedusting ash, described old sand is reclaimed silica sand, described new sand Also includes clay and coal powder, the number of added parts of old sand, dedusting ash, new sand and slaked lime: 85 parts of old sand, 4 parts of dedusting ash, 11 parts of new sand, 2.5 parts of hydrated lime, 2 parts of clay, 2 parts of pulverized coal, and the rest are water.

[0041] A preparation process for foundry dedusting reclaimed molding sand:

[0042] e. Detect and analyze the dedusting ash to obtain the content of coal powder and bentonite, and then classify and store the dedusting ash;

[0043] f. Analyze the old sand, then add the amount of dust removal ash according to the process needs, and then add it to the sand mixer and mix it evenly;

[0044] g. Dry mix new foundry sand with o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses casting molding sand with regenerated dedusting ash and a preparation technology of the casting molding sand. The molding sand comprises 80-88 parts of used sand, 3-6 parts of the dedusting ash, 10-13 parts of new sand, 1-3 parts of slaked lime and the balance of water, wherein the dedusting ash comprises 20-25% of bentonites and 5-8% of coal powder; the used sand is recycled silica sand; the new sand further comprises 2-3 parts of clay and 2-3 parts of the coal powder. The casting molding sand comprises the components in parts by weight and the balance of water. Through the adoption of the molding sand disclosed by the invention, the dedusting ash is recycled, so that the environmental pollution is reduced; at the same time, the bentonites and the coal powder are added to be used for recycling the used sand, and the new additions are reduced, so that the cost is reduced; adding the slaked lime to the newly combined molding sand, so that not only the air permeability, the compaction and the plasticity are improved, but also the fire resistance and the deformability are improved; the molding sand and the preparation technology, disclosed by the invention, are worth of popularization and application.

Description

technical field [0001] The invention belongs to the technical field of foundry sand recycling, and in particular relates to reclaimed foundry sand and a preparation process thereof. Background technique [0002] Foundry sand is a granular refractory material used to prepare molding sand and core sand in the foundry production process, and because a large amount of foundry sand is required in the foundry process, the particle size and coefficient become smaller after recycling, so that it can be pumped The dust machine is taken away, and then treated as garbage. However, in order to produce qualified castings, it is necessary to add compounds such as bentonite and coal powder to the foundry sand, which will raise dust during the recycling process and make it be taken away by the dust machine. However, in the inspection Later, it was found that it contained 25%-30% bentonite and effective coal powder. The bentonite mainly plays a bonding role, making the casting sand shape we...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22C1/00
Inventor 王克彬刘松奇彭德楼闫国富
Owner 西峡飞龙特种铸造有限公司
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com