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

Waste foundry sand regenerating process method

A process method and technology of casting waste sand, which is applied in the field of metal casting, can solve the problems of high energy consumption, emission of toxic and harmful waste gas, etc., and achieve the effect of reducing roasting energy consumption

Inactive Publication Date: 2011-04-13
LIUZHOU AOKAI ENG MACHINERY
View PDF6 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a casting waste sand regeneration process, which can solve the problems of high energy consumption and toxic and harmful waste gas emissions in the existing foundry waste sand regeneration process

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Waste foundry sand regenerating process method
  • Waste foundry sand regenerating process method
  • Waste foundry sand regenerating process method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with accompanying drawing example:

[0020] figure 1 The shown foundry waste sand regeneration process includes the following procedures:

[0021] 1. Crushing and screening: first crush the waste sand in block form, and then use a sieve to separate and remove large impurities;

[0022] 2. Magnetic separation: The waste sand that has been sieved with large impurities is subjected to magnetic separation, and the ferromagnetic substances are separated and removed from the waste sand;

[0023] 3. Roasting: Send the waste sand after magnetic separation into the roaster for roasting, burn the remaining organic matter, and discharge it into the air after dust removal by induced wind;

[0024] 4. Classification and screening: Classify and screen the treated sand obtained after roasting and cooling to obtain regenerated sand of different thickness levels required by the casting process.

[0025] Th...

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 a waste foundry sand regenerating process method, which comprises the processes of crashing and screening, magnetic separation, roasting and graded screening. The roasting process particular comprises the following steps of: preheating waste sand which does not enter a furnace and air for combustion by using the heat of hot sand which is discharged from the furnace; controlling the roasting temperature of a roasting furnace to be between 780 and 850 DEG C by controlling a roasting furnace burner and the flow of the waste sand entering the furnace; separating roasted waste sand from waste gas by using a cyclone dust collector, a spraying dust collector and a bag type dust collector; and exhausting the separated waste gas to the atmosphere after passing through an alkali liquor washing tank and an adsorption tank, wherein the bag type dust collector has a high-pressure air flow blowback control bag dust-removing structure; and the dust-removing process and the normal operation of a system are maintained by controlling the bag dust-removing cycle of the bag type dust collector. Compared with the conventional method, the waste foundry sand regenerating process method has the advantages of greatly reducing energy consumption and guaranteeing the cleaness of the exhausted waste gas.

Description

technical field [0001] The invention belongs to the technical field of metal casting, in particular to a process method for regenerating waste resin sand produced in the metal casting process. Background technique [0002] my country is a big foundry country in the world. Every year, a large amount of unusable resin waste sand is produced due to foundry production. For the treatment of resin waste sand, one is discarded, and the other is recycled and continued to be used in the foundry process. One of the existing foundry waste sand regeneration process methods includes the following steps: [0003] 1. Crushing and screening: crush the waste sand in the form of blocks, and then screen to separate and remove impurities; [0004] 2. Magnetic separation: magnetically separate the screened waste sand to separate and remove ferromagnetic substances from the waste sand; [0005] 3. Roasting: Send the waste sand after magnetic separation into the roaster for roasting, burn the re...

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): B22C5/00
Inventor 秦勇
Owner LIUZHOU AOKAI ENG MACHINERY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com