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A preparation method for recycling waste resin sand to reprocess rubber and plastic filler

A resin molding sand reprocessing technology, applied in the field of molding sand recycling, can solve problems such as failure to achieve 100% recovery, failure to get rid of fine powder, and smoke generated by reclaimed sand recycling

Active Publication Date: 2021-07-06
MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these technologies need to further segment the mineral particles to control the fineness of recycled materials and maintain the largest particle size distribution, but none of the above methods can achieve the technical purpose of 100% recovery. The recovery of recycled sand produces smoke and poor performance.
Scrubs are dewatered and dried many times before being reclassified, but there are still problems in the treatment of the outflowing waste liquid and drying in large quantities
The mixed rotary grinding of various processing equipment cannot get rid of the fine powder and carry out sand classification. The waste molding sand has not been properly recycled. The obvious defects such as pneumatic grinding decontamination and waste water discharge are even more shocking and harmful. New sand must be added in order to be utilized, and only by continuous replenishment can the purpose of using waste sand be achieved

Method used

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  • A preparation method for recycling waste resin sand to reprocess rubber and plastic filler
  • A preparation method for recycling waste resin sand to reprocess rubber and plastic filler
  • A preparation method for recycling waste resin sand to reprocess rubber and plastic filler

Examples

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Effect test

Embodiment 1

[0020] A preparation method for recycling waste resin molding sand to reprocess rubber and plastic filler, comprising the following steps:

[0021] (1) After aging the resin sand waste at -15°C for xenon lamp and ozone for 30 hours, start the ball mill device and grind it, and then combine it with chloroform solvent, triethylamine, coconut oil fatty acid diethanolamide and alkaline detergent Add the materials together to the reaction kettle, under the action of stirring, sonicate and heat to 30°C in a sealed manner, and then cool down to room temperature after 1 hour of heat preservation, start the ball mill device and grind and pulverize, and pass through a 200-mesh sieve to obtain a powder chloroform dispersion; the microwave heating The power is 300W, the frequency is 60kHz, and the raw materials according to parts by weight are: 140 parts of resin molding sand waste, 83 parts of chloroform solvent, 4.5 parts of triethylamine, 1.2 parts of ethylene glycol, 50 parts of deioni...

Embodiment 2

[0030] A preparation method for recycling waste resin molding sand to reprocess rubber and plastic filler, comprising the following steps:

[0031] (1) After aging the resin sand waste at 10°C for xenon lamp and ozone for 42 hours, start the ball mill device and grind it, and then mix it with chloroform solvent, triethylamine, coconut oil fatty acid diethanolamide and alkaline detergent composition Put them into the reaction kettle together, under the action of stirring, ultrasonically treat and airtightly heat to 30 ° C, keep warm for 2 hours and then drop to room temperature, start the ball mill device and carry out grinding and crushing, and pass through a 200 mesh sieve to obtain a powder chloroform dispersion; the microwave-heated The power is 300W, the frequency is 60kHz, and the raw materials according to parts by weight are: 140 parts of resin molding sand waste, 65 parts of chloroform solvent, 3.5 parts of triethylamine, 0.8 part of ethylene glycol, 30 parts of deioniz...

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Abstract

The invention discloses a preparation method for recycling waste resin molding sand to reprocess rubber and plastic filler. The invention belongs to the technical field of molding sand recycling. The invention discloses a preparation method for recycling waste resin molding sand to reprocess rubber and plastic filler. The prepared reprocessed rubber and plastic filler Low cost, avoiding the pollution and low efficiency of previous recycling methods, recycling waste resin sand, making it properly utilized, the recovery rate is nearly 100%, high recycling efficiency, simple process, low cost, high added value, and solves the problem of waste The outstanding problem of resin sand recycling has indirectly prepared rubber and plastic fillers with good comprehensive performance and excellent comprehensive performance, which is suitable for large-scale promotion.

Description

technical field [0001] The invention belongs to the technical field of molding sand recycling, and in particular relates to a preparation method for recycling waste resin molding sand and reprocessing rubber and plastic fillers. Background technique [0002] The recycling of molding sand materials has become popular in the last decade. Due to the desire to reduce the cost of raw materials, the cost of cleaning, transporting and dumping waste, the increase in waste disposal in accordance with environmental regulations, and the fact that most waste sand contains toxic substances, etc., indirectly increase the technical requirements for recycling and reuse of molding sand. Many foundries are equipped with recovery loads that enable sand and clay to be recycled. However, the main recycling methods at present are: grinding, heat treatment, wet cleaning, pneumatic washing and drying. Most of these technologies need to further segment the mineral particles to control the fineness...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K9/04C08K9/00C08K3/36C08K3/34C08J11/00
CPCC08J11/00C08K3/346C08K3/36C08K9/00C08K9/04C08K9/06C08K9/08
Inventor 李孙德
Owner MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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